CN215985034U - Leak detection tool for gas pipeline - Google Patents
Leak detection tool for gas pipeline Download PDFInfo
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- CN215985034U CN215985034U CN202121533483.3U CN202121533483U CN215985034U CN 215985034 U CN215985034 U CN 215985034U CN 202121533483 U CN202121533483 U CN 202121533483U CN 215985034 U CN215985034 U CN 215985034U
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Abstract
The utility model relates to a leakage detection tool for a gas pipeline, wherein a heat insulation layer for insulating gas in the gas pipeline is wrapped outside the gas pipeline; the leakage detecting tool comprises leakage detecting pipes which are sequentially laid along the length direction of a gas pipeline; the leakage detecting pipe comprises a gas collecting pipe body section; the gas collecting pipe body section is embedded in the sealed cavity, the length direction of the gas collecting pipe body section is consistent with the pipe length direction of the gas pipeline, the side surface of the gas collecting pipe body section is provided with a gas inlet hole for gas leaked by the gas pipeline to pass through, and the gas inlet hole is communicated to the pipe cavity of the gas collecting pipe body section through the sealed cavity; and the gas collecting pipe body section is provided with a detection end for sampling and detecting gas in the gas collecting pipe body section. By adopting the scheme, the detection precision and the detection efficiency can be improved.
Description
Technical Field
The utility model relates to the field of gas pipeline detection instruments, in particular to a leak detection tool for a gas pipeline.
Background
In the process of producing synthetic ammonia, the toxic, harmful, inflammable and explosive gas is H2、CO、NH3、H2S, natural gas, etc., and a cold/heat insulation layer is generally provided outside a transfer pipe for transferring the gas. When the gas is transported for a long distance, the conveying pipelines are all erected on the pipe gallery. The pipeline on the pipe gallery is higher from the ground, generally can reach 6 meters-9 meters, and personnel are inconvenient to be close to patrol.
The detection mode adopted at the present production site is as follows: the inspection personnel carry the gas detection instrument and move along the pipeline below the detected pipeline to carry out the detection of separating from the air, or whether there is the phenomenon of dripping through the visual observation heat preservation. The former method can detect the gas leakage mainly when the gas leakage is large, so that the detection accuracy is low, and the working strength of inspection personnel is increased; for the latter method, the water dripping phenomenon occurs only when the temperature of the gas in the pipe is lower than the normal temperature or the gas contains moisture, and the detection basis is limited. Therefore, the detection mode of gas leakage in the pipeline is relatively extensive at present, and the accuracy is relatively low. If the pipeline slightly leaks, the pipeline is not easy to be found by inspection personnel in time, the early detection and troubleshooting of the leakage cannot be carried out, and once the leakage is detected, the leakage amount is large, so that the serious production safety is realized, the troubleshooting is inconvenient, the troubleshooting range can be expanded, the troubleshooting efficiency is reduced, and the maintenance cost is increased.
Therefore, in the aspect of routing inspection of toxic, harmful, flammable and explosive gas pipelines, a leak detection tool capable of collecting leaked gas in time and conveniently and accurately detecting the gas leakage condition is urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a leak detection tool for a gas pipeline, which can improve detection precision and detection efficiency.
The technical scheme adopted by the utility model is as follows.
A leakage detection tool for a gas pipeline is characterized in that a heat insulation layer for insulating gas in the gas pipeline is wrapped outside the gas pipeline, and a sealing cavity for temporarily containing leaked gas is formed between the gas pipeline and the heat insulation layer; the leakage detecting tool comprises leakage detecting pipes which are sequentially laid along the length direction of a gas pipeline; the leakage detecting pipe comprises a gas collecting pipe body section; the gas collecting pipe body section is embedded in the sealed cavity, the length direction of the gas collecting pipe body section is consistent with the pipe length direction of the gas pipeline, the side surface of the gas collecting pipe body section is provided with a gas inlet hole for gas leaked by the gas pipeline to pass through, and the gas inlet hole is communicated to the pipe cavity of the gas collecting pipe body section through the sealed cavity; and the gas collecting pipe body section is provided with a detection end for sampling and detecting gas in the gas collecting pipe body section.
Preferably, the two end parts of the gas collecting pipe body section extend along the radial direction of the gas collecting pipe body section to form a detection pipe body section, and the tail end of the detection pipe body section penetrates through the insulating layer and extends to the outside of the insulating layer during assembly; the end port of the detection pipe body section forms a detection end; the end port of the detection pipe body section is detachably provided with a plug for plugging the detection pipe body section, and the end port of the detection pipe body section is connected with gas detection equipment by opening the plug to detect gas leakage.
Preferably, the diameter of the leak detection tube is less than or equal to one sixth of the diameter of the gas conduit.
Preferably, the inlet ports are spaced apart along the length of the gas header section.
Preferably, the part of the leakage detecting pipe, which is contacted with the gas pipeline when the leakage detecting pipe is installed, is a part a, and the air inlet holes are distributed on two sides of the part a.
Preferably, the air inlet holes on both sides of the gas collecting pipe body section are alternately arranged at intervals in sequence along the pipe length direction of the gas collecting pipe body section.
Preferably, the distance between every two adjacent air inlets on two sides of the gas collecting pipe body section along the pipe length direction of the gas collecting pipe body section is the same, the distance is more than or equal to one hundred and fifty times of the length of the gas collecting pipe body section, and the distance is less than or equal to one sixty-fifth of the length of the gas collecting pipe body section.
Preferably, the diameter of the air inlet hole is more than or equal to one fifth of the diameter of the leakage detection pipe, and the diameter of the air inlet hole is less than or equal to one third of the diameter of the leakage detection pipe.
Preferably, the leak detector tube is arranged on the upper side of the gas duct.
Preferably, a filtering component for filtering solid impurities is arranged in the detection interface.
The utility model has the technical effects that:
(1) the leakage detection tool for the gas pipeline collects leakage gas for sampling detection through a leakage detection pipe laid along the gas pipeline, and particularly, the leakage detection pipe is provided with a gas collecting pipe body section, the gas collecting pipe body section is clamped between an insulating layer and the gas pipeline, an air inlet hole is formed in the gas collecting pipe body section, and the air inlet hole is arranged corresponding to a sealing cavity and can be used for allowing the leakage gas temporarily contained in the sealing cavity to enter a pipe cavity of the gas collecting pipe body section. When the leakage condition needs to be detected, sampling detection is carried out on leaked gas in a pipe cavity of the gas collecting pipe body section through the detection end. By adopting the scheme, gas leaked from the pipeline can be collected in time, so that the sampling detection of inspection personnel is facilitated, and the detection precision and the detection efficiency are improved.
(2) The end of the gas collecting pipe body section extends along the radial direction to form a detection pipe body section, the detection end is arranged at the end port of the detection pipe body section, a plug is detachably assembled at the end port, and the end port of the detection pipe body section is plugged through the plug when detection is not needed, so that leaked gas is temporarily stored in a pipe cavity of the gas collecting pipe body section; when the leakage condition needs to be detected, the leaked gas is sampled and detected from the inside of the tube cavity of the gas collecting tube body section through the end port of the detection tube body section. The detection interface is positioned outside the heat preservation layer when the leakage detection pipe is assembled, so that inspection personnel can conveniently inspect the leakage detection pipe in place, and the inspection efficiency is improved; because the inspection personnel can inspect in place, the sampling detection can be performed from the detection interface in a short distance, the detection accuracy is greatly improved, the early failure troubleshooting in the leakage process is facilitated, and the troubleshooting efficiency and the maintenance cost are further improved.
(3) The diameter of the leakage detection pipe is set to be less than one sixth of the diameter of the detected pipeline, so that the influence on the laying of the heat insulation material on the pipeline can be reduced, the contact area between the heat insulation material and the gas pipeline is ensured to be as large as possible, the purpose of reliably preserving the heat of the gas in the gas pipeline is further met, the leakage detection pipe can be laid between the heat insulation layer and the gas pipeline, and the requirements on collection and sampling detection of leaked gas are met.
(4) Through arranging the inlet port along the pipe length direction interval of gas collecting pipe body section, can collect the gas of revealing with each position that gas collecting pipe body section corresponds along the pipe length direction on the gas pipeline, improve the efficiency and the reliability of collecting gas.
(5) The gas collection efficiency of the gas collection pipe body section on the gas leaked by the gas pipeline is further improved by arranging the gas inlet holes on two sides of the leakage detection pipe.
(6) The air inlets on the two sides of the gas collecting pipe body section are sequentially arranged at intervals in an alternating mode along the pipe length direction of the gas collecting pipe body section, so that leaked gas can be collected, and meanwhile, the probability that the gas is moved out from the gas collecting pipe body section through the air inlets is reduced.
(7) The interval of every two adjacent air inlets on both sides of the gas collecting pipe body section is set to be the same, so that the probability of collecting leaked gas on each position of the gas collecting pipe body section on a gas pipeline is kept consistent, the leaked gas of the gas pipeline is collected as fully as possible by the leakage detection pipe, the accuracy of sampling detection results is improved, and the misjudgment probability is reduced.
(8) Through further injecing the diameter of inlet port for the inlet port not only satisfies the demand of collecting revealing gas, can also be favorable to the gas in the leak hunting pipe can be by abundant sample and carry out the analysis, makes the sample analysis result can the true reaction detect the pipeline and whether have the leakage.
(9) The leak detection pipe is arranged on the upper side of the gas pipeline, so that rising gas leaked from the gas pipeline can be collected, and the collection efficiency of the leaked gas is improved.
(10) Through set up filtering component in detecting the interface, can be at gaseous check out test set from detecting the interface and when extracting the sampling to the gas of revealing in the gas collecting tube body section, prevent solid impurity to get into in the gaseous check out test set, and then make the sampling gas purer, be favorable to improving the life who detects the degree of accuracy and prolong gaseous check out test set moreover.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a schematic view of a leak detection tool for a gas line mounted on the gas line according to one embodiment of the utility model;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic diagram of a leak detection tool for gas lines provided in accordance with one embodiment of the utility model;
fig. 4 is a schematic cross-sectional view of the header body;
fig. 5 is a schematic view of a partial structure of a leak detection tool for a gas pipe in a top view according to an embodiment of the present invention.
The corresponding relation of all the reference numbers is as follows:
10-a gas pipeline, 20-an insulating layer, 30-a leakage detecting pipe, 31-a gas collecting pipe body section, 311-an air inlet, 32-a detecting pipe body section, 40-a plug, 50-a sealing cavity and 60-a filtering component.
Detailed Description
In order that the objects and advantages of the present application will become more apparent, the present application will be described in detail with reference to the following examples. It is understood that the following text is intended only to describe one or several particular embodiments of the application and does not strictly limit the scope of the claims which are specifically claimed herein, and that the examples and features of the examples in this application may be combined with one another without conflict.
Referring to fig. 1 to 5, the present embodiment provides a leak detection tool for a gas pipeline, which aims to solve the technical problem that: the existing mode that adopts more extensively is mostly patrolled and examined the pipeline of conveying gas to whether the inspection has the condition that has gas leakage, however the mode that detects gas leakage at present detects the precision lower, can not take place to reveal in gaseous early stage, in time discover to reveal the trouble and carry out the troubleshooting, especially in the process of patrolling and examining to poisonous and harmful gas, if can not in time discover to reveal the trouble, will have the potential safety hazard, and also can lead to blindly enlarging the troubleshooting scope, increase cost of maintenance's result. In this regard, the embodiment adopted in this example is as follows:
the gas pipeline 10 is usually wrapped by a heat insulation layer 20, the heat insulation layer is used for heat insulation of gas in the gas pipeline 10, the heat insulation can be used for cold insulation of gas below the normal temperature, or heat insulation of gas above the normal temperature, and the constant temperature of the gas conveyed in the gas pipeline 10 is mainly kept. A sealing chamber 50 is formed between the gas pipeline 10 and the insulating layer 20 in a sealing fit manner, once gas leakage occurs in the gas pipeline 10, the leaked gas is temporarily stored in the sealing chamber 50, and the sealing chamber 50 can be used for temporarily accommodating the leaked gas; the leak detection tool includes leak detection pipes 30 laid in sequence along the pipe length direction of the gas pipe 10; the leakage detecting pipe 30 comprises a gas collecting pipe body section 31 and detection interfaces arranged at two ends of the gas collecting pipe body section 31; the gas collecting pipe body section 31 is embedded in the sealing chamber 50, the length direction of the gas collecting pipe body section 31 is consistent with the pipe length direction of the gas pipeline 10, the side surface of the gas collecting pipe body section 31 is provided with a gas inlet hole 311, the gas inlet hole 311 is communicated to the pipe cavity of the gas collecting pipe body section 31 from the sealing chamber 50, and the gas inlet hole 311 can allow the leakage gas temporarily stored in the sealing chamber 50 to enter the pipe cavity of the gas collecting pipe body section 31; the detachable end cap 40 that is equipped with of detection interface, end cap 40 are used for implementing the shutoff to it, open end cap 40 after, can link to each other detection interface and gaseous check out test set to carry out the detection of gas leakage.
The leakage detection tool for the gas pipeline provided by the embodiment collects the leaked gas for sampling detection through the leakage detection pipe 30 laid along the gas pipeline 10, specifically, the leakage detection pipe 30 has a gas collecting pipe body section 31 and detection interfaces located at two ends of the gas collecting pipe body section, the gas collecting pipe body section is clamped between the heat preservation layer 20 and the gas pipeline 10, an air inlet 311 is arranged on the gas collecting pipe body section 31, and the air inlet 311 is arranged corresponding to the sealing chamber 50, so that the leaked gas temporarily contained in the sealing chamber 50 can enter the pipe cavity of the gas collecting pipe body section 31. When detection is not needed, the detection interface is blocked by the plug 40, so that leaked gas is temporarily stored in a tube cavity of the gas collecting tube section; when the leakage condition needs to be detected, the leaked gas is sampled and detected from the inside of the pipe cavity of the gas collecting pipe body section 31 through the detection interface. By adopting the scheme, gas leaked from the pipeline can be collected in time, so that the sampling detection of inspection personnel is facilitated, and the detection precision and the detection efficiency are improved.
The gas detecting device is usually used for detecting oxygen content, CO and H2S, combustible gas (CH4, etc.), ammonia gas, hydrogen gas, etc. The gas detection device may be a device integrating a plurality of parameter detection functions, or may include a plurality of devices for respectively detecting different parameters.
The end of the gas collecting pipe body section 31 is formed with a detection pipe body section 32 extending in the radial direction thereof, and the end of the detection pipe body section 32 penetrates the insulating layer 20 and extends to the outside of the insulating layer 20 when assembled; the detection interface is constituted by the end ports of the detection tube segment 32. The detection tube body sections 32 at the two ends of the gas collecting tube body section 31 are arranged in parallel and are positioned at the same side of the gas collecting tube body section 31, and the gas collecting tube body section 31 and the detection tube body sections 32 form a U-shaped tubular structure. When the gas pipeline detection device is installed and used, the outer end of the detection pipe body section 32 penetrates through the heat insulation layer 20 of the gas pipeline to be detected and reaches the outside of the heat insulation layer 20, and one side, away from the detection pipe body section 32, of the gas collecting pipe body section 31 is attached to and arranged on the gas pipeline 10 to be detected. The end part of the gas collecting pipe body section 31 extends along the radial direction to form a detection pipe body section 32, and then a detection interface is arranged at the end part of the detection pipe body section 32, and the detection interface is positioned outside the heat insulation layer when the leakage detection pipe is assembled, so that inspection personnel can conveniently inspect the leakage detection pipe in place, and the inspection efficiency is improved; because the inspection personnel can inspect in place, the sampling detection can be performed from the detection interface in a short distance, the detection accuracy is greatly improved, the early failure troubleshooting in the leakage process is facilitated, and the troubleshooting efficiency and the maintenance cost are further improved.
The gas header section 31 is bound with the gas pipe 10 by iron wires and is disposed on the upper side of the gas pipe 10 because poisonous, harmful, inflammable, and explosive gases, which are less dense than air, if leaked, drift upward and gather in the sealed chamber 50. The gas header section 31 is arranged on the upper side of the duct to make it easier to collect the leaking gas.
The leakage detecting pipe 30 is a stainless steel pipe with the diameter of 8-12 mm. The reason why the diameter of the leakage detecting pipe is set to be 8-12 mm is as follows: firstly, the diameters of the gas pipelines 10 for long-distance transportation of toxic, harmful, flammable and explosive gases are all 100mm, in order to collect the gas leaked in the heat insulation layer as much as possible and not to influence the laying of the heat insulation layer on the pipelines, the diameter of the leakage detection pipe 30 is set to be less than one sixth of the diameter of the pipeline to be detected, and therefore the laying of the heat insulation layer on the pipelines is not influenced; secondly, in order to facilitate operation and improve detection efficiency, the four-in-one gas detector is required to be capable of extracting at least half of the gas quantity of the length of the leak detection pipe within 1 minute, so that the diameter of the leak detection pipe is set to be 8-12 mm. Wherein, the four-in-one gas detector is a gas detector commonly used in the production field and can detect oxygen content, CO and H2S, combustible gas (CH4 and the like) is detected, the gas leakage detection device is provided with a negative pressure sampling interface, a rubber pipe sleeve is arranged at the front end of the negative pressure sampling interface, when the gas pipeline 10 needs to be sampled and detected, the rubber pipe sleeve is sleeved on a detection pipe body section, then a detection instrument is started, and a negative pressure suction pump arranged in the detection instrument works to suck, sample and detect gas in the leakage detection pipe 30, so that a detection result is obtained. The diameter of the leakage detecting pipe 30 is set to be one sixth smaller than the diameter of the detected pipeline, so that the influence on the laying of the heat insulation material on the pipeline can be reduced, the contact area between the heat insulation material and the gas pipeline 10 is ensured to be as large as possible, the purpose of reliably preserving the heat of the gas in the gas pipeline 10 is further met, the leakage detecting pipe can be laid between the heat insulation layer 20 and the gas pipeline 10, and the requirements on collection and sampling detection of leaked gas are metAnd (4) demand.
The inlet holes 311 are arranged at intervals in the tube length direction of the gas header section 31. Through arranging the inlet holes 311 along the tube length direction of the gas collecting tube body section 31 at intervals, the gas leaked from each part corresponding to the gas collecting tube body section 31 along the tube length direction on the gas pipeline 10 can be collected, and the efficiency and reliability of collecting the gas are improved.
Since the leak detecting pipe 30 is disposed in contact with the gas pipe 10, the portion of the leak detecting pipe 30 in contact with the gas pipe 10 during installation is referred to as a portion a, and the air inlet holes 311 are distributed on both sides of the portion a. And the air inlets 311 on both sides of the gas collecting pipe body section 31 are alternately arranged at intervals in sequence along the pipe length direction of the gas collecting pipe body section 31. By arranging the gas inlet holes 311 on both sides of the leak detection pipe 30, the collection efficiency of the gas collection pipe body section 31 on the gas leaked from the gas pipeline 10 is further improved; by arranging the air inlets 311 on both sides of the gas collecting pipe body section 10 alternately along the pipe length direction of the gas collecting pipe body section 31 in sequence at intervals, the probability that the gas moves out from the gas collecting pipe body section 31 through the air inlets can be reduced while collecting the leaked gas, thereby prolonging the residence time of the leaked gas in the gas collecting pipe body section 31.
The air inlet holes 311 have a downward included angle α with the horizontal direction, as shown in fig. 4, so that the air inlet holes are not easily blocked or blocked by the cold/heat insulation material. α is preferably 45 °.
Referring to fig. 5, the distance between every two adjacent inlet holes 311 on both sides of the gas collector line segment 31 along the tube length direction of the gas collector line segment 31 is equal to L1, and the distance between two adjacent inlet holes 311 on the same side is L2, so that L2 is 2 × L1. In this embodiment, the distance L1 between every two adjacent inlet holes 311 on both sides of the gas collecting tube body segment 31 is 20-30 cm. This allows the leak detector to collect as much gas as possible and also allows the gas detector to collect a sample of the gas within the entire leak detector 30.
Regarding the selection of the diameter of the air inlet opening, a preferred embodiment of this embodiment is that the diameter of the air inlet opening is greater than or equal to one fifth of the diameter of the leak detection pipe, and the diameter of the air inlet opening is less than or equal to one third of the diameter of the leak detection pipe. Taking the leakage detecting tube 30 with a diameter of 8-12 mm as an example, the diameter of the air inlet 311 is 2-3 mm. Through further injecing the diameter of inlet port for the inlet port not only satisfies the demand of collecting revealing gas, can also be favorable to the gas in the leak hunting pipe can be by abundant sample and carry out the analysis, makes the sample analysis result can the true reaction detect the pipeline and whether have the leakage.
The insulation material or the cold insulation material of heat preservation 20, after using for a long time, may have some solid piece to produce, perhaps when the installation, originally just there are some tiny solid impurity in the heat preservation 20, for the example reduces the influence to gaseous check out test set, prevents to block up gaseous check out test set, and the preferred embodiment of this embodiment is: a filter assembly 60 for filtering solid impurities is arranged in the detection interface. Through set up filtering component in detecting the interface, can be at gaseous check out test set from detecting the interface and when extracting the sampling to the gas of revealing in the gas collecting tube body section, prevent solid impurity to get into in the gaseous check out test set, and then make the sampling gas purer, be favorable to improving the life who detects the degree of accuracy and prolong gaseous check out test set moreover.
The filter assembly 60 is further preferably a filter screen that is preferably mounted in a readily removable mounting for periodic cleaning or replacement. The plug 40 may be a bolt, and the bolt is in threaded sealing fit with and assembled with the end interface of the detection pipe section.
The leakage detecting pipes 30 are laid along the gas pipeline 10, the length of each leakage detecting pipe 30 is 20-30 meters, two leakage detecting pipes 30 are laid next to each other, the laying rate of the leakage detecting pipes 30 in the length direction of the gas pipeline 10 is improved, moreover, as the leakage detecting pipes 30 are laid in sequence, after the gas leakage of a certain leakage detecting pipe 30 exceeds the standard, the maintenance can be performed pertinently, the dismantling range of the heat preservation layer is locked in the range corresponding to the leakage detecting pipe 30, the expansion of the maintenance range is avoided, the maintenance cost is reduced, and the maintenance efficiency is improved. The detection interface of the leakage detection pipe 30 is preferably laid at a place (a pipe gallery inspection platform or a first floor ground) which is easy to reach by personnel, the leakage detection pipe 30 needs to be correspondingly heat-insulated or cold-insulated, and the heat-insulated or cold-insulated material laying of the leakage detection pipe 30 needs to be consistent with the pipeline to be detected. In normal operation, the detection port of the leak detection pipe 30 needs to be sealed by a plug 40. When the detection is needed, one end of the leakage detecting pipe orifice is opened, the sampling pipe on the gas detector is sleeved at the detection interface on the leakage detecting pipe 30, and then sampling detection is carried out. If gas leakage is detected in the gas pipeline 10 for a continuous circle and the leakage amount tends to increase, a maintenance worker can put forward a maintenance scheme for the pipeline in time; and further, the phenomenon that a large amount of toxic, harmful, flammable and explosive gas leaks from the pipeline to threaten the safe and stable operation of the production device is avoided.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention. Structures, devices, and methods of operation not specifically described or illustrated herein are generally practiced in the art without specific recitation or limitation.
Claims (10)
1. A leak detection tool for a gas pipe, the gas pipe (10) being wrapped with an insulating layer (20) for insulating gas inside the gas pipe (10), characterized in that a sealed chamber (50) for temporarily accommodating leaked gas is formed between the gas pipe (10) and the insulating layer (20); the leakage detection tool comprises leakage detection pipes (30) which are sequentially laid along the length direction of a gas pipeline (10); the leakage detection tube (30) comprises a gas collector tube section (31); the gas collecting pipe body section (31) is embedded in the sealing chamber (50), the length direction of the gas collecting pipe body section (31) is consistent with the pipe length direction of the gas pipeline (10), the side surface of the gas collecting pipe body section (31) is provided with a gas inlet hole (311) for gas leaked by the gas pipeline (10) to pass through, and the gas inlet hole (311) is communicated to the pipe cavity of the gas collecting pipe body section (31) through the sealing chamber (50); the gas collecting pipe body section (31) is provided with a detection end for sampling and detecting gas in the gas collecting pipe body section.
2. Leak detection tool for gas piping according to claim 1, wherein both end portions of the header section (31) are formed with detection tube sections (32) extending in the radial direction thereof, respectively, and the ends of the detection tube sections (32) penetrate the insulating layer (20) and extend to the outside of the insulating layer (20) when assembled; the end port of the detection pipe section (32) forms a detection end; the end port of the detection pipe body section (32) is detachably provided with a plug (40) for plugging the detection pipe body section, and the plug (40) is opened to connect the end port of the detection pipe body section (32) with gas detection equipment for detecting gas leakage.
3. Leak detection tool for a gas line according to claim 1 or 2, characterized in that the diameter of the leak detection tube (30) is less than or equal to one sixth of the diameter of the gas line.
4. Leak detection tool for gas lines according to claim 1, characterised in that the inlet holes (311) are spaced apart along the length of the collector section (31).
5. Leak detection tool for a gas pipe according to claim 4, wherein the portion of the leak detection pipe (30) which comes into contact with the gas pipe (10) when installed is a portion a, and the gas inlet holes (311) are distributed on both sides of the portion a.
6. Leak detection tool for gas lines according to claim 5, characterised in that the inlet holes (311) on both sides of the header section (31) are alternately arranged at intervals in succession along the length of the header section (31).
7. Leak detection tool for a gas line according to claim 6, characterized in that every two adjacent inlet holes (311) on both sides of the header section (31) have the same spacing in the direction of the tube length of the header section (31), which spacing is greater than or equal to one hundred and fifty times the length of the header section (31) and which spacing is less than or equal to one sixty-fifth the length of the header section (31).
8. Leak detection tool for gas lines according to any of claims 4 to 7, characterized in that the diameter of the gas inlet opening (311) is more than or equal to one fifth of the diameter of the leak detection tube (30) and the diameter of the gas inlet opening (311) is less than or equal to one third of the diameter of the leak detection tube (30).
9. Leak detection tool for gas lines according to claim 1, characterised in that the leak detection tube (30) is arranged on the upper side of the gas line (10).
10. Leak detection tool for gas lines according to claim 1, characterized in that a filter assembly (60) for filtering solid impurities is arranged in the detection port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121533483.3U CN215985034U (en) | 2021-07-06 | 2021-07-06 | Leak detection tool for gas pipeline |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121533483.3U CN215985034U (en) | 2021-07-06 | 2021-07-06 | Leak detection tool for gas pipeline |
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| CN215985034U true CN215985034U (en) | 2022-03-08 |
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| CN202121533483.3U Active CN215985034U (en) | 2021-07-06 | 2021-07-06 | Leak detection tool for gas pipeline |
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