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Infrared gas analyzer, gas examination is the make use of of infrared sun rays. It is based on a different concentration of components to be analyzed, several radiation assimilation. The excessg radiation creates the temperature rise inside the detector, the going bedding of film several from the tension side, to produce a capacitor pipe inspection signal of the detector. This can indirectly measure the concentration of components to be analyzed.



. Evaluation of pipe inspection principles
Infrared gasoline analyzer is composed of a couple of indie light source can make two beams of infrared, correspondingly, after the ray modulator, a beam of 5Hz. In accordance to the actual needs of rays via a filter to reduce the background of other gases absorb infrared gas point interference.
Infrared via two air slot provided is filled with a steady flow via the test pipe inspection gas dimension slot provided, the other is brimming with a non-absorbing components of the guide chamber record gas. Operation, when calculating pipe inspection slot provided measured gas concentrations, , the assimilation of infrared light amount change as required, and the guide beam (reference chamber beam) does not change the sum of light. From the area out of the light sum distinction by the detector, the pressure difference detector and the detector signal into a capacitor. This signal is amplified by the signal conditioning circuitry processed and sent to the keep tabs on as well as the total control of the CRT display. The size of the output signal is proportional to the concentration and the measured components.

Infrared gas analyzer can be used to analyze a variety of polyatomic gases, such as: C2H2, C2H4, C2H5OH, C3H6, C2H6, C3H8, NH3, CO2, CO, CH4, SO2, etc. Can be used to analyze the same kind of atoms polyatomic gas and the inert gas, such as: N2, Cl2, H2, O2, and He, Ne, Ar, etc.



Depending on the component gases of different wavelengths of infrared absorption characteristics of the selective analysis of the work instruments. This absorption spectrum measurement to determine the type of gas; absorption intensity measurements to determine the concentration of the measured gas. Use of infrared analyzer wide range, not only to analyze the gas composition, solution composition can be analyzed, and the high sensitivity, rapid response, to online continuous indication, control system can also be composed. Commonly used in industry for detecting infrared gas analyzer section consists of two parallel optical system composed of the same structure.

A measuring chamber is pipe inspection, one is the reference chamber. Light board chambers by cutting a certain period simultaneously or alternately open and close the optical path. Measured in the measurement chamber of the gas, the gas to be measured with specific wavelengths of light is absorbed, so that the optical path through the measuring chamber into the receiving chamber of the infrared flux reduction. The higher the gas concentration, the gas chamber into the infrared light flux received less; while the flux through the reference chamber is certain, the infrared device chamber into the flux is constant. Therefore, the higher the concentration of the measured gas through the measuring chamber and the reference slot provided flux difference is bigger. This flux difference is the amplitude of vibration is a predetermined period projected to the infrared device in the gas chamber. Receiving chamber a few microns thick metal film is separated into two halves, in house sealed with a larger concentration of the test component gas in the absorption wavelength range can absorb all incident infrared rays, so that the pulsating flux becomes periodic variation of the temperature, and then according to the temperature switch of gas equation is converted to pressure changes, and then use the capacitive sensor to detect the increased processing indicates the measured gas concentration. Except for using capacitive sensors, but also can straight detect infrared quantum infrared sensor and infrared interference filter for wavelength selection and with tunable laser as the easy source, the formation of a new all-solid-type infrared gas analyzer. This analyzer with only one light source, a measuring chamber, an infrared sensor for measurement of gas concentration can be done. In addition, the use of a filtering with a plurality of different wavelengths CD, were measured simultaneously in multi-component gas concentration of various gases.

And infrared analyzer principle also similar UV analyzer, analyzer, photoelectric colorimeter, the industrially used more. ]]> https://ameblo.jp/wrh4617/entry-11579792222.html Thu, 25 Jul 2013 15:45:10 +0900


To effectively manage the risk of pipe pipe inspection leakage risk, improve leaking pipe inspection work efficiency, probing the company to take the initiative, from the end of June, after about two months' time, on the east, west pipeline network are all at risk of pipe were a noise Logger monitors.
Up to now, a total of placing sound Logger1314 months (since the Second Ring Road road construction transformation, in order to prevent the device is lost, yet for Logger place), the data path, analysis, summary after the show, which zynga poker chips for about suspected leaks put the number of reactions 20%. Next, the company will further the guidelines of high-risk pipe closely supervised, and there are unusual circumstances leaking pipe section point setting pipe inspection.
The focus on high-risk pipe section noise monitor received good results, effectively reducing pipeline leakage, but also for probing the company to create a good fiscal benefits. ]]> https://ameblo.jp/wrh4617/entry-11579786089.html Thu, 25 Jul 2013 15:30:07 +0900

In the oil, gas vehicles, the pipeline transport plays an irreplaceable role in the oil and petrochemical companies an important part of the infrastructure, pipeline operation and management of infrastructure construction management work is the most important part. Pipeline coating a long time since the emergence of underground aging, brittle hair, stripping, off cause pipeline corrosion, pipeline leakage or even fatal incidents often occur; in urban construction, road construction and other third parties is not clear due to pipeline construction exact location of the leak caused by the transmission medium, explosions and other accidents are not unusual. Meanwhile stray current will also have a very strong pipeline buried metal corrosion, cathodic protection techniques for pipelines also has a amazing role in the destruction. To avoid security incidents, to ensure pipeline in the physical and efficient integrity of the pipe inspection always less than control, pipe inspection to identify defects in the outer protective coating, is important to grasp the pipeline route.

According to data, the bulk of our oil and gas pipelines have entered the pipe inspection and defect fixes necessary cycle planned for the pipeline coating modified desperately needed. My company based on years of experience in construction for pipeline coating repair and protect defect removal, master pipeline route and provide an important scientific basis for depth.


Pipeline rust main reasons are: soil chafing, air corrosion, stray existing pipeline corrosion hazards of oil, natural gas, city gas and normal water offer pipes buried outer coating time since the emergence of prolonged aging, brittle hair, burning, off, In case of leakage will cause incalculable economic loss and security threats. Complex Services 1, outer coating testing ground trenchless underground pipeline detection and mapping the outer pipe coating damage detection, location, seriousness of the damaged point to classify the restoration of top priority outer coating warmth performance evaluation, grading pipeline coatings Comprehensive assessment report and corrective recommendations 2, cathodic protection cathodic protection system parameters state detection test tube ground potential (powered off) test DC voltage gradient and close interval potential test (DCVG, CIPS) evaluate the effectiveness of the cathodic protection system 3, the spurious Current test pipe breakage stray current inflow and discharge direction and size of AC interference voltage, current density test tube ground potential (powered off) 4 24 hours of nonstop testing, soil testing soil medium corrosive corrosive situ perseverance of soil properties Analysis of soil corrosivity evaluation of soil resistivity trials ]]> https://ameblo.jp/wrh4617/entry-11579182329.html Wed, 24 Jul 2013 16:01:19 +0900 pipe inspection specifications
1, on the type of coating indefinite
2, for gas smothered pipeline destruction point with a strong ranking capability and accuracy, positioning pipe outer cover destruction point accuracy ± (1.0m) or less. Able to the efficiency of pipeline coatings evaluated preferred.
3, the instrument involves light, the system showed a direct, simple and efficient operational requirements.



Second, the pipe inspection deterioration detector requirements
1, using a variety of ways (including excavation and no excavation) detection of buried pipes, pipe outer wall can detect corrosion wall loss, circumferential cracks and depth of more than 70% of the longitudinal cracks and external impact damage;
2, suitable for all blends of gas pipeline diameter size measurements;
3, have sufficient wall thickness detection accuracy, the reliability of at least 2%, one-time detection of length greater than 200 meters;
4, the instrument system specifications for visual display of the test results can be obtained directly corrosion depth, size and general shape;
5, the detection equipment are little, mild weight, easy on-site flexible application. ]]> https://ameblo.jp/wrh4617/entry-11579175358.html Wed, 24 Jul 2013 15:41:13 +0900 pipe inspection Introduction



Pipe laying network involving land, sea, and some across the river, rail and highway. Pipe wrap

Let the environment and designed an important factor affecting diagnosis.



General of the pipeline external and internal testing,

When detected by the external difficulties,

Inner testing procedure should be used

Testing.

Pipe line supervision is not easy,

Reality had within observation data speculation about the scope tube

Road conditions across the board.

Since the pipe inspection products,

Especially the detector pigging practical and reliable test results

Of increase, the pipe inspection complete field possible.




The main detection technologies




Buried pipeline position recognition technology



From the ground area using the detection of buried pipeline location technology,

To grasp the position of underground oil and gas pipelines,

Prevent construction

Facilities work accident.



① electromagnetic induction of the Act is divided into direct and indirect methods. Direct method is passed directly to the change of buried pipeline









Electricity,

With an alternating magnetic field detection coils,

The size and direction of a magnetic field to detect the embedded position.

Indirect ophthalmoscope

Measurement method is to use electromagnetic induction to produce eddy buried pipe, with the exact same method as the direct detection of buried position.

Direct method and high reliability.



② eddy current method along with a high-frequency current through the excitation coil close to the buried steel pipe,

Coil impedance changes required

Laying position.



③ static magnetic field via the instant current method for underground pipes, which produces a static magnetic field according to the size requirements laying position.



④ acoustic procedure of left pipeline or substance for the media,

Transmission frequency sound waves,

To detect the traditional acoustic influx on the ground

Approach.



⑤ ultrasonic transmitter from the ground to the underground transmission pulse,

And use the recipient to take in from the underground burial

Was reflected acoustic signal, using the received signal pattern to measure the pipeline location.



Method ⑥ radar antenna from the ground on the pulse current,

With receiving antenna from the underground laying of anti-matter

Emitted signals, after that the obtained signal pattern to detect the pipeline location.



⑦ pigging tracking method with a coil antenna is fed into the pipeline pigging,

A receiver joined to the surface land

Pigging received low-frequency alternating magnetic field generated from pigging pipeline buried by confirming the position.



⑧ pigging the pattern detection method will be equipped with a rotary tool,

Rangefinder and recorder into the pipeline pigging,

Profit

With the wiring diagram attracted by the recorder detect pipeline locations. ]]> https://ameblo.jp/wrh4617/entry-11578529235.html Tue, 23 Jul 2013 15:19:10 +0900
This pipeline inspection system developed at Tel Aviv School School of Physics, Astronomy Professor Kai Ji said that many people believe they must be daily contact with household tap water is safe, it is not.

Kay monetary use of "infrared fiber" as a waters good quality testing real estate agent, and linking the industrial infrared spectrometer infrared fiber, in whose colors in real-time identification and inform the relevant units, structures, or residential water pipeline products and storage facilities are contaminated.
After preliminary tests, this infrared spectrometer fiber link pipe inspection system did find a large number of drinking water wells in Israel comprise excessive pesticide components, does not meet the World Health Organization (WHO) published standards.

Reported that some parts of Europe have also taken by the the system, complete water quality testing, the results will be published in the latest issue of the "Journal of Applied Spectroscopy."

In addition to discovering whether the polluted water, the file said Kai Ji said that this pipeline inspection system can also be found in real time, whether drinking water was utilized to terrorist organizations or terrorist chemical agents, like the United States is in fear of being for the poisoned water risk in certain, need to defend towards any form of chemical terrorist attacks. ]]> https://ameblo.jp/wrh4617/entry-11578520038.html Tue, 23 Jul 2013 14:33:06 +0900
Brief introduction

Pipe inspection robot system which can always be used sewer camera inspection and investigation work inside the pipe automaton, with a strong vibrant functionality, and a lot more impaired driving capability, even in extreme conditions pipeline can also give good results.
CCTV pipeline inspection system can obtain drains endoscopic inspection work: can detect pipeline shatter, deterioration and weld quality condition: the use of design reputation and neural community and a series of picture handling technology, the collected images for further handling better able to identify pipeline disease situation, the auxiliary pipeline manually figure out damage and reduce the chance of error, improve the recognition efficiency; collected using digital compass robot pose data in real time, using nerve organs network approach for auto correction control, making the robot more smart, humane, the operation more simple and convenient.

Pipe inspection robot main features:
An all-round video detection
Before and after the installation of two pipe robot-resolution color camera, front camera can be 360 ° observation, auto-focus, 100-fold magnification system, rear camera when reversing open with auxiliary lighting system;
2, the image sensor automatic tilt angle detection system (camera system)
Camera support system, auto detection camera body tilt angle correction accuracy 0.5 °; can make the captured image is always upright position so that the operating personnel to observe;
3 NC auxiliary lighting system
]]> https://ameblo.jp/wrh4617/entry-11577911846.html Mon, 22 Jul 2013 15:24:09 +0900
According in order to "Legislation on Safety Guidance of Exceptional Machines", "stress pipe protection supervision and monitoring requirements," and "periodic inspection of industrial piping procedures" (Trial) and other nationwide rules and criteria and the requirements of the pertinent industry requirements, requirements are as follows:
Units should be all set to use style and design data (piping layout plan, process flow diagrams, etc.), installation (installation conclusion data, single-line diagram, etc.), pipe accessories and other quality documents, operating parameters and other technical information, running records, open parking records, pipeline hazards monitoring the implementation of measures to record, pipe renovation construction records, maintenance reports, pipeline failure treatment records,
Pipe Inspection and testing on the previous period last comprehensive online inspection reports and inspection reports, pressure piping and other equipment using the registration list inspector for review.


Utilizing sections should conduct a well-rounded inspection of the site preparation work, ensure that the provision of Pipe Check up test pipe to be tested in a suitable state; provide a safe testing environment, responsible for inspecting the required auxiliary work (such as the elimination of insulation, scaffolding, polished rust with lifting set, provide evaluation electricity, water, gas, etc.), and to assist in the evaluation unit to conduct a well-rounded inspection.
Inspection of safety steps should meet the pursuing requirements:
First, the effect of a comprehensive test pipes or other objects attached to components, inspection requirements should be cleaned or removed;
_ Second, for the pipeline diagnostic and inspection and erection of scaffolding, portable ladders and other facilities must be safe and secure, easy to carry out evaluation and testing work;
Third, high or low stress pipeline running under the conditions shall be in accordance with the requirements of Practice slowly cool down or heat, to prevent damage;
Four, Pipe Inspection and testing, you should cut off the pipe or adjacent equipment-related power and remove the fuse and set clear safety signs;
Five, for live-ray exam, should be separated from the radiographic area, setting up safety signs;
Six, a well-rounded exam, shall conform with the following conditions
(A) exclude medium inside the pipe clean with blind plate cut off all liquids, gases or steam sources, setting up clear signs of isolation;
(Two) on the transport of flammable, combustion, toxic or asphyxiant media channels, should be replaced, and, disinfection and cleaning. For the transportation of flammable media channels, is strictly prohibited to use air displacement;;
(Three) into the pipeline internal inspection fixtures and tools used in the power supply attention should be consistent with current national standard "safe voltage" GB3805 provisions; inspection equipment and utensils used should be in a valid test period, after examination and verification of qualified rear may be used.
Thickness measurement, surface inspection:
Pipe Inspection procedure requires elbows, tees and size thickness measurements carried out at random mutation, sampling ratio shown in Table 1. Site requirements for the tube the required ratio for mincing, polishing requirements: grinding out on each side of the weld and 50mm, sanding off paint and rust, exposed metallic luster; elbow bend center grinding approximately 10cm2 area. ]]> https://ameblo.jp/wrh4617/entry-11577901196.html Mon, 22 Jul 2013 15:00:34 +0900
A, pipe inspection technology development
Long-distance oil along with gas pipelines managing process usually suffer from inside and outdoor the two environmental corrosion, internal corrosion mainly by the transmission medium sized, fluid pipe, dirt and pipe anxiety and various other joint role in the formation; usually due to external corrosion coating injury, failure production. Love pipes commonly used internal corrosion, corrosion inhibitor and other means to deal with in latest years with the puppy owners of the pipeline pipeline operation and management as well as the strengthening of the stringent requirements of the transmission medium sized, inner rust is largely beneath control. Existing domestic and international long-distance oil and gas pipeline corrosion control main direction of development in the outer anti-corrosion, pipeline inspection and thus also focusing due to external corrosion and pipe coating defects caused by defects.
In recent years, with the widespread reputation of computer technology and applications, both at home and abroad detection technology has been rapid improvement, pipeline inspection technology gradually formed pipe inside and outside the detection technology (coating detection, intelligent detection) two branches. Typically, the coating is damaged, at the bottom level of pipe failure also subject to corrosion detection technology outside of the pipe is designed to detect the effectiveness of the coating and the cathodic defense, based on the detection by means of digging, to detect defects in the tube corrosion purpose, for Most test conditions within the North layout pipes are very effective. Pipeline detection technology is mainly used to detect internal and external corrosion of pipelines, local deformation and weld cracks and other defects, but also indirectly determine the integrity of the coating.
Second, the pipeline outer detection technology
Usually buried pipeline coating and electrical protection (CP) together form a protective system for the combined effects of external corrosion control, these two methods play a complementary role: namely coatings are economical and effective cathodic protection, and cathodic protection Also pinholes or damage the coating place under control. The method is already being recognized as the best protection measures and has been widely used for buried pipeline corrosion control.
Coating is to protect against external corrosion of buried pipeline first line of defense, the protective effect of a direct impact on the work of electrical protection current efficiency, NACE1993 Annual Meeting Paper No. 17 states: "the right of the coating should be utilized Buried member offers 99% protection needs, and the remaining 1% was presented by the cathodic defense. " Thus needing coating has good electrical padding, adhesion, rust amount of resistance continuity and overall performance, maintaining its ethics is crucial. Coating overall efficiency is affected by quite a few aspects, such as coating materials, mending technology, construction quality, corrosive environments and supervision stage, and the pipeline for a number of time, the coating overall performance will be varying degrees of decline, the performance of aging , cracking, peeling, injury and other conditions, the tube floor due to propel or indirect make contact with together with the air, soil and corrosion, if the coating is not effective detection, maintenance, eventually lead to perforated pipe rupture accident damage. ]]> https://ameblo.jp/wrh4617/entry-11577220954.html Sun, 21 Jul 2013 15:15:34 +0900

Change from unaggressive to active pipe inspection pipe inspection, pipe inspection team set up as soon as possible, the dropout control to a minimum.
1.pipe inspection team set up
(1) pipe inspection staff quality
With the improvement of science and technology, more and more advanced leak detection technology and equipment. Therefore, the leak should have the following conditions:
① knowledge level as high as attainable, should have a high school scholastic ability;
② should have aggressive professionalism, ambition;
③ To be good at learning, continuous exploration and practice, and actively summed leak experience;
④ In the age composition of the proposal on the old, young combination (ratio of about 1:3:5), and gradually transition to the inexperienced.
(2) Leak crew
Generally every 80 to 100 km normal water pipeline leak detection with a ~ 2.
(3) Leak staff functions
① well known with the situation in the region pipeline operation;
② control leak detector device as well as pipe locating equipment;
③ mastered conventional leak recognition methods;
④ reliable for the District Circuit leak;
⑤ responsible for devices maintenance and repair;
⑥ do leak records, fill out reports, and prepare reports leak
(4) Leak test indicators
① dark neglected out rate (dark leak detection and repair leakage ratio of the total number) should be greater than 85%;
② correct leak rate (leak detection staff claimed leakage point location and the actual distance of 1 meter in the ratio) should be greater than 95%.
(2) Optional pipe inspection devices effectively
The Water Division of the geographic, economic and technical conditions are different, the choice of instruments is different, according to their own specific circumstances matching. Via the physical situation analysis, Southern shallow buried pipeline, with a missed instrument can solve 70% of the leakage; while the northern pipeline buried deeper, harder sound leakage to the ground, the best choice of the relevant instrument. However, analysis of economic and design circumstances, municipalities, provincial capitals, cities and cheaply developed city water department optional advanced leak detector device, such as a rapid reduction of leakage consumption provided preconditions.
(3) Strengthen pipe inspection staff training
Leak is a thorough succeed, with a leak detector device, and did not choose the right people it is difficult to play a benefit, which requires strengthening the leak staff training, in order to improve trickle recognition skills, but also to teach inspection Leakage staff hard-working professionalism.
4 Select the effective pipe inspection method
Although many methods leak water industry, but from the practical effect of leak detection, leak detection method should be used to tone audiometry, connected leak recognition method, sound leakage automatic monitoring method or rupture leak detection method. Many Water Division are made of these methods, to manage the leak includes played a certain role.
5 pipe inspection to fully mobilize the eagerness of staff
Leak recognition is a difficult work outdoors, sometimes need to work at night, how to mobilize the enthusiasm of staff is a leak the water department should be concerned about. Economic levers should be employed to make benefits and penalty of the administration system to tremendously mobilized the enthusiasm of staff leak. ]]> https://ameblo.jp/wrh4617/entry-11577209668.html Sun, 21 Jul 2013 14:45:35 +0900