CN203519542U - Detecting device for leakage points of coating in petroleum pipe - Google Patents
Detecting device for leakage points of coating in petroleum pipe Download PDFInfo
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- CN203519542U CN203519542U CN201320465480.XU CN201320465480U CN203519542U CN 203519542 U CN203519542 U CN 203519542U CN 201320465480 U CN201320465480 U CN 201320465480U CN 203519542 U CN203519542 U CN 203519542U
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Abstract
The utility model discloses a detecting device for leakage points of a coating in a petroleum pipeline. The detecting device comprises a pipe rack, a detecting rack, four detecting gun tubes and a leakage point counter. A motor transmission mechanism and a pneumatic telescopic slide table are arranged on the detecting rack; the four detecting gun tubes are connected at the front end of the pneumatic telescopic slide table in parallel; the front ends of the four detecting gun tubes are respectively connected with conductive sponges; the leakage point counter is in series connected among the conductive sponges and the pipe rack by a detecting wire to form a conducted detecting loop. The detecting device disclosed by the utility model is similar to a resistance detector which is very sensitive to resistance of an insulated coating and a water injecting needle hole. If needle holes are met, water in the conductive sponges is penetrated into the needle holes, the current is broken over and a sound signal is activated, and therefore, only can the needle holes penetrating through the coating be detected. The detecting device disclosed by the utility model has the advantages that coating quality is not influenced, four pipes can be detected by one step, so that average time for detecting each pipe only needs 45 seconds, and therefore, efficiency is high.
Description
Technical field
The utility model relates to coating quality and detects, and relates in particular to a kind of oil country tubular goods internal coating device for detecting leak point.
Background technology
At present a lot of Oilfield using is the method that electric spark detects oil country tubular goods internal coating leak source.Electric spark detecting instrument is that the generation of electric spark, can affect coating quality, especially, in the situation that coating is thinner, punch-through can occur by various conducting base anticorrosive coats surface is added to a certain amount of high voltage pulse.
Utility model content
The purpose of this utility model, exactly in order to address the above problem, provides a kind of oil country tubular goods internal coating device for detecting leak point.
In order to achieve the above object, the utility model has adopted following technical scheme: a kind of oil country tubular goods internal coating device for detecting leak point, and it comprises:
For setting up the tubing stand of oil country tubular goods to be measured, this tubing stand is connected with detection line;
Detect stand, on detection stand, be provided with motor transmission mechanism and Pneumatic extension slide unit, Pneumatic extension slide unit is erected on motor transmission mechanism and can under the drive of motor transmission mechanism, advances or retreat;
Four are detected gun barrel, and it is connected to the front end of Pneumatic extension slide unit side by side, and four are detected gun barrel and can under the drive of Pneumatic extension slide unit, pass in and out and be erected at four oil country tubular goodss to be measured on tubing stand respectively; Four front ends that detect gun barrel are connected with respectively conductive sponge, and each conductive sponge is connected with respectively detection line:
Leak source counter, it is serially connected between conductive sponge and tubing stand and is formed conduction detection loop by described detection line;
Described tubing stand comprises spaced two stands, is installed with respectively four side by side for setting up the V-type frame of oil country tubular goods to be measured in two stands, and each V-type frame bottom in one of them stand is collets, and top is conducting block; The described detection line being connected with tubing stand is four, and one end of four detection lines is connected between the collets and conducting block of corresponding V-type frame, and the other end connects respectively leak source counter.
Described conductive sponge is done conductor with salt solution.
In described salt solution, be mixed with the liquid detergent of lubricate.
Described detection gun barrel is pvc pipe, and pvc pipe front end is connected with stainless steel pad; Described conductive sponge is clamped by stainless steel pad; One end of the described detection line being connected with each conductive sponge is connected with corresponding stainless steel pad respectively, and connection leak source counter is passed respectively in rear end in four pvc pipes.
The motor of described motor transmission mechanism is the adjustable variable-frequency motor of speed.
The similar a kind of resistance detector of oil country tubular goods internal coating device for detecting leak point of the present utility model, as a resistance detector, installs very sensitive to the resistance of coating and water filling pin hole.If run into pin hole, the conduction salt solution in conductive sponge can infiltrate pin hole (or when coating resistance is less than comparison resistance 80k Ω), and current lead-through activates voice signal.Only have those pin holes that run through coating just can be detected.Adopt pick-up unit of the present utility model, do not affect coating quality, and once can detect 4 tubing, average every pipe detects and only needed for 45 seconds, and efficiency is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of facing of the utility model oil country tubular goods internal coating device for detecting leak point;
Fig. 2 is the plan structure schematic diagram of the utility model oil country tubular goods internal coating device for detecting leak point;
Fig. 3 is the side-looking structural representation of the detection stand in the utility model;
Fig. 4 is the side-looking structural representation of the tubing stand in the utility model.
Embodiment
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, the utility model oil country tubular goods internal coating device for detecting leak point, comprises that this tubing stand is connected with detection line (out not shown) for setting up the tubing stand 1 of oil country tubular goods to be measured.
Detect stand 2, on detection stand, be provided with motor transmission mechanism 3 and Pneumatic extension slide unit 4, Pneumatic extension slide unit is erected on motor transmission mechanism and can under the drive of motor transmission mechanism, advances or retreat.
Four are detected gun barrel 5, and it is connected to the front end of Pneumatic extension slide unit 4 side by side, and four are detected gun barrel and can under the drive of Pneumatic extension slide unit, pass in and out and be erected at four oil country tubular goodss to be measured on tubing stand respectively; Four front ends that detect gun barrel are connected with respectively conductive sponge 6, and each conductive sponge is connected with respectively detection line (out not shown).
Leak source counter (out not shown), it is serially connected between conductive sponge and tubing stand and is formed conduction detection loop by described detection line.
Conductive sponge in the utility model is done conductor with salt solution, and the concentration of salt solution is 1-3%.Humidity measurement instrument is housed on spongy top, and humidity does not reach while requiring, can automatic water filling.Spongy top is detachable type, customized according to each size pipe, guarantees the spongy top internal coating in tube wall of fitting.
In salt solution in the utility model, be mixed with the liquid detergent of lubricate.
Detection gun barrel in the utility model is pvc pipe, and pvc pipe front end is connected with stainless steel pad; Conductive sponge is clamped by stainless steel pad; One end of the detection line being connected with each conductive sponge is connected with corresponding stainless steel pad respectively, and connection leak source counter is passed respectively in rear end in four pvc pipes.
The motor of the motor transmission mechanism in the utility model is the adjustable variable-frequency motor of speed.
Detection method based on above-mentioned detection device is, by four oil country tubular goodss that complete after internal coating, be placed in respectively on tubing stand, according to the size of oil country tubular goods, select suitable conductive sponge, be loaded in the stainless steel pad that respectively detects gun barrel front end, starter motor gear train, allow detection gun barrel go deep in the body of oil country tubular goods, when Pneumatic extension slide unit compresses the pipe end of oil country tubular goods, halt, allow motor transmission mechanism drive detection gun barrel average rate to retreat, while start detection, when internal coating has leak source, conductive sponge and tubing stand form conducting loop, leak source rolling counters forward, the detection data of four oil country tubular goodss deposit database automatically in.
Described detection method adopts DC+67.5v voltage.
Comparison resistance in described leak source counter is set to 80k Ω, when the resistance of coating being detected and be less than comparison resistance, is reported to the police and counts.
Specific embodiment: tubing is 51/2 " drilling rod, after internal coating, to detect, pipeline section screw thread place is coating layer portion not, and warning horn gives the alarm and counts, coating layer portion, thickness reaches standard while being greater than 80k Ω (be resistance value), the detecting device meter leak source of will not reporting to the police.
Claims (5)
1. an oil country tubular goods internal coating device for detecting leak point, is characterized in that, comprising:
For setting up the tubing stand of oil country tubular goods to be measured, this tubing stand is connected with detection line;
Detect stand, on detection stand, be provided with motor transmission mechanism and Pneumatic extension slide unit, Pneumatic extension slide unit is erected on motor transmission mechanism and can under the drive of motor transmission mechanism, advances or retreat;
Four are detected gun barrel, and it is connected to the front end of Pneumatic extension slide unit side by side, and four are detected gun barrel and can under the drive of Pneumatic extension slide unit, pass in and out and be erected at four oil country tubular goodss to be measured on tubing stand respectively; Four front ends that detect gun barrel are connected with respectively conductive sponge, and each conductive sponge is connected with respectively detection line;
Leak source counter, it is serially connected between conductive sponge and tubing stand and is formed conduction detection loop by described detection line.
2. oil country tubular goods internal coating device for detecting leak point as claimed in claim 1, it is characterized in that: described tubing stand comprises spaced two stands, in two stands, be installed with respectively four side by side for setting up the V-type frame of oil country tubular goods to be measured, each V-type frame bottom in one of them stand is collets, and top is conducting block; The described detection line being connected with tubing stand is four, and one end of four detection lines is connected between the collets and conducting block of corresponding V-type frame, and the other end connects respectively leak source counter.
3. oil country tubular goods internal coating device for detecting leak point as claimed in claim 1, is characterized in that: described conductive sponge is done conductor with salt solution.
4. oil country tubular goods internal coating device for detecting leak point as claimed in claim 1, is characterized in that: described detection gun barrel is pvc pipe, and pvc pipe front end is connected with stainless steel pad; Described conductive sponge is clamped by stainless steel pad; One end of the described detection line being connected with each conductive sponge is connected with corresponding stainless steel pad respectively, and connection leak source counter is passed respectively in rear end in four pvc pipes.
5. oil country tubular goods internal coating device for detecting leak point as claimed in claim 1, is characterized in that: the motor of described motor transmission mechanism is the adjustable variable-frequency motor of speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320465480.XU CN203519542U (en) | 2013-07-31 | 2013-07-31 | Detecting device for leakage points of coating in petroleum pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320465480.XU CN203519542U (en) | 2013-07-31 | 2013-07-31 | Detecting device for leakage points of coating in petroleum pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203519542U true CN203519542U (en) | 2014-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320465480.XU Expired - Fee Related CN203519542U (en) | 2013-07-31 | 2013-07-31 | Detecting device for leakage points of coating in petroleum pipe |
Country Status (1)
| Country | Link |
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| CN (1) | CN203519542U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103983666A (en) * | 2014-05-29 | 2014-08-13 | 西安瑞璘表面工程有限公司 | Ground wire-free non-conductive coating electric spark detection device and detection method thereof |
| CN104345077A (en) * | 2013-07-31 | 2015-02-11 | 上海图博可特石油管道涂层有限公司 | Detecting device for coating leakage points in petroleum pipe and detecting method |
| CN116519574A (en) * | 2023-04-12 | 2023-08-01 | 宁夏长鑫防腐工程有限公司 | Oil pipe numerical control wet sponge detection device and detection method |
-
2013
- 2013-07-31 CN CN201320465480.XU patent/CN203519542U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104345077A (en) * | 2013-07-31 | 2015-02-11 | 上海图博可特石油管道涂层有限公司 | Detecting device for coating leakage points in petroleum pipe and detecting method |
| CN103983666A (en) * | 2014-05-29 | 2014-08-13 | 西安瑞璘表面工程有限公司 | Ground wire-free non-conductive coating electric spark detection device and detection method thereof |
| CN103983666B (en) * | 2014-05-29 | 2016-10-05 | 西安瑞璘表面工程有限公司 | A kind of without ground wire non-conductive coating layer electric spark detection apparatus and detection method thereof |
| CN116519574A (en) * | 2023-04-12 | 2023-08-01 | 宁夏长鑫防腐工程有限公司 | Oil pipe numerical control wet sponge detection device and detection method |
| CN116519574B (en) * | 2023-04-12 | 2024-07-30 | 宁夏长鑫防腐工程有限公司 | Oil pipe numerical control wet sponge detection device and detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: PANJIN TUBE-COTE PIPE COATING CO., LTD. Free format text: FORMER OWNER: TUBOKETE PETROLEUM PIPELINE COATING CO., LTD., SHANGHAI Effective date: 20150623 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150623 Address after: 124013 Liaoning petroleum hi tech Industrial Park, Panjin Economic Development Zone Patentee after: Panjin Bo Pu special coating Co. Ltd. Address before: 200941 Baoshan District, Shanghai Pu Pu Industrial Park Jin Yue Road, No. 669 Patentee before: Shanghai Tube-cote Petroleum Pipe Coating Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20200731 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |