CN112648421A - Natural gas line sampling valve - Google Patents
Natural gas line sampling valve Download PDFInfo
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- CN112648421A CN112648421A CN202011520466.6A CN202011520466A CN112648421A CN 112648421 A CN112648421 A CN 112648421A CN 202011520466 A CN202011520466 A CN 202011520466A CN 112648421 A CN112648421 A CN 112648421A
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- 238000005070 sampling Methods 0.000 title claims abstract description 168
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 166
- 239000003345 natural gas Substances 0.000 title claims abstract description 82
- 238000007789 sealing Methods 0.000 claims description 38
- 239000003795 chemical substances by application Substances 0.000 claims 2
- 229920001875 Ebonite Polymers 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 16
- 238000000746 purification Methods 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 9
- 239000012629 purifying agent Substances 0.000 description 9
- 239000000428 dust Substances 0.000 description 5
- 241000282472 Canis lupus familiaris Species 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K51/00—Other details not peculiar to particular types of valves or cut-off apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/024—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2226—Sampling from a closed space, e.g. food package, head space
- G01N2001/2238—Sampling from a closed space, e.g. food package, head space the gas being compressed or pressurized
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a natural gas pipeline sampling valve which comprises a baffle, a connecting frame, a sampler and a purification box, wherein the purification box is positioned at the lower end of the baffle and is fixedly connected with the baffle, the connecting frame is positioned on the inner surface of the baffle and is fixedly connected with the baffle, the sampler is positioned inside the baffle, the sampler comprises a first sampling pipe, a second sampling pipe, a first piston and a second piston, the first piston is positioned inside the first sampling pipe, the second piston is positioned inside the second sampling pipe, the lower ends of the first piston and the second piston are fixedly connected with a rubber plate, and the outer circular surface of the rubber plate is tightly attached to the inner wall of the first sampling pipe. According to the invention, the accuracy of the natural gas sampled by the sampler is ensured, the sampling efficiency of the natural gas is further ensured, the risk of being influenced by the outside during sampling is reduced, the sampling stability of detection personnel is ensured, and the accuracy of a detection result is ensured.
Description
Technical Field
The invention relates to the technical field of natural gas detection, in particular to a natural gas pipeline sampling valve.
Background
Natural gas is a gaseous fossil fuel consisting primarily of methane. It is mainly found in oil fields and natural gas fields, and also in coal seams in small quantities. Natural gas is also buried in underground closed geological structures like crude oil, and some are stored at the same level as crude oil and some exist independently.
A natural gas leakage alarm device in the prior patent (publication number: cn201920840429.x) includes: the ring-shaped sleeve consists of an upper ring sleeve and a lower ring sleeve, the upper ring sleeve is hinged with one side of the lower ring sleeve, a boss is arranged at the joint of the other side of the upper ring sleeve and the lower ring sleeve, a bolt hole is arranged on the boss, a locking bolt penetrates through the bolt hole to fixedly sleeve and seal the upper ring sleeve and the lower ring sleeve outside the natural gas pipeline, and the inner wall of the ring-shaped sleeve and the outer side of the natural gas pipeline are sealed to form a sealed buffer cavity; and a plurality of pressure sensors are distributed in the buffer cavity.
In the process of implementing the invention, the inventor finds that at least the following problems in the prior art are not solved:
1. a natural gas pipeline sampling valve is a detection device arranged at a natural gas pipeline connecting point to conveniently sample and detect natural gas in a pipeline at any time, but the existence of the sampling valve can cause a plurality of connecting points to be arranged midway in the pipeline, the sealing performance at the connecting points can be reduced after long-time use, and the phenomenon of gas leakage can be caused, particularly when the sampling valve is used in a natural gas pipeline in a community, special attention is needed, the existing community natural gas pipeline is usually arranged in a basement, and detection personnel can not pay attention frequently, so that the surface dust of the sampling valve on the pipeline can be easily caused, and the dust can enter an inlet of a sampling device pipeline on the sampling valve, so that when sampling is carried out, gas is required to be discharged for a period of time firstly, impurities in the pipeline are removed, and then sampling is carried out, thereby the efficiency of sampling detection is reduced, in addition, the impurities in the pipeline cannot be guaranteed to be clear and clean by exhausting in time, and the detection accuracy is reduced if the impurities enter the sample during sampling;
2. when sampling the natural gas and examining, the phenomenon that the gas leakage appears at the connector often has, especially in such airtight space of basement in district, if discovery that can not be timely, can lead to having the gathering of natural gas in the space that the sample valve was located, cause safe hidden danger, and to the personnel that overhaul, enter into such environment, can make the staff appear inhaling a large amount of natural gas risks, thereby endanger maintainer's life safety, the security that the sample valve used has been reduced.
Therefore, a natural gas pipeline sampling valve is provided.
Disclosure of Invention
The invention aims to provide a natural gas pipeline sampling valve, a sampler of the pipeline sampling valve can be opened by opening a first sealing plate and a second sealing plate on the pipeline sampling valve, and then sampling can be carried out, when operation is carried out, a second piston is firstly rotated to separate a bearing of the second piston from a second sampling pipe, then the second piston is pulled to separate the second piston from the second sampling pipe, then a connecting pipe is taken out to be inserted into the second sampling pipe, and then the first piston is pulled to drive the first piston to be above an inlet of the second sampling pipe, at the moment, natural gas in a pipeline can enter the inside of the second sampling pipe, sampling can be carried out, when sampling is finished, the first piston is firstly pressed to block the second sampling pipe, the connecting pipe on the second sampling pipe is drawn out, the second piston is inserted into the second sampling pipe, and then the first piston is moved to the upper part of the inlet of the second sampling pipe, then the second piston is pressed first, the second sampling tube is thoroughly plugged, the first piston is pressed to the bottom, sampling is completed, the pipeline sampler can be prevented from being directly exposed to the outside, so that a large amount of dust is accumulated on the surface of the sampling valve to influence the pipeline sampler to sample, the accuracy of the sampler in sampling the natural gas is guaranteed, the sampling efficiency of the natural gas is further guaranteed, the risk of being influenced by the outside during sampling is reduced, the sampling stability of detection personnel is guaranteed, the accuracy of detection results is guaranteed, and the connecting points on the baffle are located in the shell baffle through the sealing of the baffle, and the two sides are sealed, so that the connecting points of the pipeline and the natural gas pipeline are located in a sealed space, and the situation that the connecting points of the pipeline and the natural gas pipeline cannot be found in time when air leakage occurs is avoided, the natural gas is gathered in the sealed space of the basement, and the personal safety of workers is endangered, so that the problems in the background technology are solved.
In order to achieve the purpose, the invention provides the following technical scheme: a natural gas pipeline sampling valve comprises a baffle, a connecting frame, a sampler and a purifying box, wherein the purifying box is positioned at the lower end of the baffle and is fixedly connected with the baffle;
the sampler comprises a first sampling tube, a second sampling tube, a first piston and a second piston, wherein the first piston is positioned inside the first sampling tube, the second piston is positioned inside the second sampling tube, the lower ends of the first piston and the second piston are both fixedly connected with a rubber plate, the outer circular surface of the rubber plate is tightly attached to the inner wall of the first sampling tube, the position, close to the upper end, of the outer circular surface of the second piston is fixedly connected with a bearing, and the outer surface of the bearing is provided with a threaded section;
the inner surface of one side of the baffle is close to the position of the edge and is provided with an annular groove, the inner surface of the annular groove is close to the position of the rear end and is connected with a second sealing plate in a sliding mode, the inner surface of the annular groove is close to the position of the front end and is connected with a first sealing plate in a sliding mode, the inner surface of one side of the baffle is close to the position of the lower end and is fixedly connected with a bottom plate, the outer surfaces of the first sealing plate and the second sealing plate are tightly attached to the inner surface of the bottom plate, a sealing ring is arranged at the joint of the first sealing plate and the second.
When the sampling valve works, the first sealing plate and the second sealing plate on the pipeline sampling valve are opened, so that the sampler of the pipeline sampling valve can be opened, and then sampling can be carried out, when the sampling valve is operated, the second piston is firstly rotated to enable the bearing of the second piston to be separated from the second sampling tube, then the second piston and the second piston are pulled to enable the second piston to be separated from the second sampling tube, then the connecting pipe is taken out to be inserted into the second sampling tube, and then the first piston is pulled to drive the first piston to be above the inlet of the second sampling tube, at the moment, natural gas in the pipeline can enter the inner part of the second sampling tube, sampling can be carried out, when sampling is finished, the first piston is firstly pressed to enable the second sampling tube to be blocked, the connecting pipe on the second sampling tube is drawn out, the second piston is inserted into the second sampling tube, then the first piston is moved to be above the inlet of the second sampling tube, and then the second piston is, the second sampling pipe is thoroughly plugged, the first piston is pressed to the bottom to complete sampling, the pipeline sampler can be prevented from being directly exposed to the outside, so that a large amount of dust is accumulated on the surface of the sampling valve to influence the pipeline sampler to sample, the accuracy of the sampler in sampling natural gas is guaranteed, the sampling efficiency of the natural gas is guaranteed, the risk of being influenced by the outside during sampling is reduced, the sampling stability of detection personnel is guaranteed, the accuracy of a detection result is guaranteed, the connection points on the baffle are located inside the shell baffle through the sealing of the baffle, the two sides are sealed, so that the connection points of the pipeline and the natural gas pipeline are located in a sealed space, the situation that the connection points of the pipeline and the natural gas pipeline cannot be timely found when air leakage occurs is avoided, and the natural gas is gathered in the sealed space of the basement, endangering the personal safety of the workers.
Preferably, the link includes branch, connecting plate, the one end and the connecting plate fixed connection of branch, and the other end and the baffle fixed connection of branch, the fixed slot has been seted up to the surface of baffle corresponding the position of connecting plate, the threaded groove has been seted up to the one side surface that branch was kept away from to the connecting plate, the surface of connecting plate is close to middle position fixedly connected with pipeline.
When the sampling valve works, the whole sampling valve is wrapped by the first sealing plate and the second sealing plate on the baffle, the pipeline sampling valve can be prevented from being directly exposed to the outside, but the sampler is protected, meanwhile, the phenomenon of air leakage can also occur after a connecting point between a natural gas pipeline and the pipeline is used for a long time, in order to enable the connecting point to be placed in the baffle, fixing grooves are respectively arranged on two sides of the baffle, when the natural gas pipeline is connected, one end of the pipeline is inserted into the fixing grooves, the flanges are all placed on the supporting rod, the flanges are mutually attached to the outer surface of the supporting rod, the two flanges are fixed, the two pipelines are mutually connected, the fixing can be completed, the connecting part of the flanges is exposed in the baffle, if the connecting part of the flanges has the phenomenon of air leakage, the leaked gas can enter the inside of the baffle, can not be directly discharged into the external space, thereby ensuring the environment of the external space.
Preferably, the inner surface of the fixing groove is connected with a clamp in a sliding manner, a sliding groove is formed in the position, located above the fixing groove, of the outer surface of the baffle, a sliding way is formed in the lower end of the inner surface of the sliding groove and communicated with the fixing groove, a slot is formed in the front end of the inner surface of the sliding groove, a sealing gasket is fixedly connected to the outer circular surface of the clamp, a fixing stop block is connected to the inner surface of the sliding way in a sliding manner, the lower end of the fixing stop block is fixedly connected with the clamp, a fixing hole is formed in the outer surface of the front end of the fixing stop block and is the same as the diameter of the slot, an inserting rod is connected to the inner surfaces of the fixing hole.
When the natural gas pipeline clamping device works, a flange connecting point between a natural gas pipeline and a pipeline is placed inside a fixed groove to avoid the leakage of natural gas at the flange connecting point, but the height of the flange connecting point is higher than that of the pipeline connected with the flange, so that a leakage space exists inside the fixed groove to cause gas inside a baffle to leak out, when the natural gas pipeline clamping device is used, an inserted rod on the fixed baffle is firstly disassembled, two fixed baffles are moved to be close to each other inside a chute, the fixed baffle can move downwards inside the chute in the moving process of the fixed baffle, when the two fixed baffles are attached, a fixed hole on the fixed baffle corresponds to an inserted slot in the middle position inside the chute, the inserted rod is inserted on the fixed hole to enable the two fixed baffles to be fixed inside the chute, and when the two fixed baffles are close to each other, the fixed baffle can drive a clamp to move, thereby drive breach department on the anchor clamps and be close to each other, when breach department on the anchor clamps is close to each other, can make the diameter of anchor clamps reduce, anchor clamps can drive sealed the pad on the anchor clamps when removing and move down, thereby the edge of fixed slot is also sealed when the diameter that can ensure anchor clamps reduces, when two fixed dog are laminated each other, anchor clamps breach department also can laminate, and the internal surface of anchor clamps laminates each other with natural gas line's outer disc, thereby can make whole baffle all be in encapsulated situation, make whole sample valve all have by the baffle parcel live, can avoid the natural gas dispersion to whole underground space when appearing leaking, threaten detection personnel's personal safety.
Preferably, the purifying box includes shell, storage case, air exhauster, air-supply line, the upper end surface and the air-supply line fixed connection of shell, the one end of air-supply line runs through shell and air exhauster fixed connection, the equal fixedly connected with of both sides surface of air exhauster goes out the tuber pipe, the lower extreme internal surface and the storage case sliding connection of shell, the purifying agent has been filled into to the inside of storage case, go out the tuber pipe and keep away from the one end of air exhauster and go deep into the inside of purifying agent the upper end surface fixedly connected with blast pipe of shell, the inside intercommunication of blast pipe and shell.
When the sampling valve works, each connecting point of the whole sampling valve is in a sealed state through the baffle, the safety of the connecting point can be guaranteed, and the danger caused by natural gas leakage is avoided, but in the actual operation process, even if the whole device is wrapped, the leaked natural gas still exists in the baffle and obstructs the sampling process, so that when sampling is carried out, firstly, an exhaust fan positioned in the purifying box needs to be opened, the air in the baffle enters the exhaust fan through the air inlet pipe, the gas in the baffle enters the air outlet pipe and is discharged, the gas enters the purifying agent in the storage box, after the purifying agent is purified, the gas rises from the exhaust pipe and returns to the inside of the baffle again, the situation that a large amount of natural gas cannot escape after the baffle is opened is guaranteed, and the sampling is facilitated, the efficiency of sample is improved.
Preferably, one end of the supporting rod is fixedly connected with the inner surface of the inner surface fixing groove of the baffle, and the edge of the inner surface of the fixing groove is horizontally consistent with the supporting rod.
During operation, when the pipeline installation advances the inside of baffle, at first make on the flange on the baffle places branch, the outer disc of branch and the outer disc of baffle laminate each other this moment to the width of flange equals with the baffle, can make branch provide a stable supporting role for the flange on the natural gas line, avoids the bearing of the tie point on the flange when the pipeline rocks all to be located flange joint's bolt, with this stability that improves the flange.
Compared with the prior art, the invention has the beneficial effects that:
1. when the sampling device is operated, the second piston is firstly rotated to separate the bearing of the second piston from the second sampling tube, then the second piston is pulled to separate the second piston from the second sampling tube, then the connecting pipe is taken out and inserted into the second sampling tube, and then the first piston is pulled to drive the first piston to be above the inlet of the second sampling tube, at the moment, natural gas in the pipeline can enter the inside of the second sampling tube, and then sampling can be carried out, when sampling is finished, the first piston is firstly pressed to block the second sampling tube, the connecting pipe on the second sampling tube is drawn out, the second piston is inserted into the second sampling tube, then the first piston is moved to the upper part of the inlet of the second sampling tube, and then the second piston is firstly pressed, the second sampling tube is thoroughly plugged, and then the first piston is pressed to the bottom to finish sampling, so that the pipeline sampler can be prevented from being directly exposed outside to influence the sampler to sample, the accuracy of the sampler in sampling the natural gas is guaranteed, the sampling efficiency of the natural gas is further guaranteed, the risk of being influenced by the outside during sampling is reduced, the sampling stability of detection personnel is guaranteed, and the accuracy of a detection result is guaranteed;
2. and through the sealing of baffle for the tie point on the baffle all is located the inside of shell baffle, and seals both sides, thereby makes the tie point of pipeline and natural gas pipeline be in sealed space, avoids the tie point of pipeline and natural gas pipeline when appearing leaking gas, discovery that can not be timely, makes the natural gas gathering in this kind of inclosed space of basement, harm staff's personal safety.
Drawings
FIG. 1 is an overall structural view of the present invention;
FIG. 2 is an overall exterior view of the present invention;
FIG. 3 is a combined view of a first seal plate and a second seal plate of the present invention;
FIG. 4 is a structural view of a clear sampler of the present invention;
FIG. 5 is a structural view of the connecting frame of the present invention;
FIG. 6 is a view showing the combination of the fixing groove and the clamp according to the present invention;
fig. 7 is a view showing the internal structure of the chute of the present invention.
In the figure: 1. a baffle plate; 2. a connecting frame; 3. a sampler; 4. a pipeline; 5. a purification box; 11. an annular groove; 12. a first sealing plate; 13. a second sealing plate; 14. a fixing plate; 15. a base plate; 21. a thread groove; 22. a strut; 23. fixing grooves; 24. a connecting plate; 231. a clamp; 232. a gasket; 233. fixing a stop block; 234. a fixing hole; 235. a slot; 236. a slideway; 237. a chute; 238. inserting a rod; 31. a first sampling tube; 32. a first piston; 33. a second sampling tube; 34. a second piston; 35. a bearing; 36. a rubber plate; 51. a purifying agent; 52. a material storage box; 53. an exhaust fan; 54. an air outlet pipe; 55. an air inlet pipe; 56. an exhaust pipe; 57. a housing.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 7, the present invention provides a technical solution:
a natural gas pipeline sampling valve comprises a baffle plate 1, a connecting frame 2, a sampler 3 and a purifying box 5, wherein the purifying box 5 is positioned at the lower end of the baffle plate 1 and is fixedly connected with the baffle plate 1, the connecting frame 2 is positioned on the inner surface of the baffle plate 1 and is fixedly connected with the baffle plate 1, and the sampler 3 is positioned inside the baffle plate 1;
the sampler 3 comprises a first sampling tube 31, a second sampling tube 33, a first piston 32 and a second piston 34, the first piston 32 is positioned inside the first sampling tube 31, the second piston 34 is positioned inside the second sampling tube 33, the lower ends of the first piston 32 and the second piston 34 are both fixedly connected with a rubber plate 36, the outer circular surface of the rubber plate 36 is tightly attached to the inner wall of the first sampling tube 31, the position, close to the upper end, of the outer circular surface of the second piston 34 is fixedly connected with a bearing 35, and the outer surface of the bearing 35 is provided with a threaded section;
the inner surface of one side of the baffle plate 1 is provided with an annular groove 11 close to the edge, the inner surface of the annular groove 11 close to the rear end is connected with a second sealing plate 13 in a sliding way, the inner surface of the annular groove 11 close to the front end is connected with a first sealing plate 12 in a sliding way, the inner surface of one side of the baffle plate 1 close to the lower end is fixedly connected with a bottom plate 15, the outer surfaces of the first sealing plate 12 and the second sealing plate 13 are tightly attached to the inner surface of the bottom plate 15, the joint of the first sealing plate 12 and the second sealing plate 13 is provided with a sealing ring, the outer surfaces of the first sealing plate 12 and the second sealing plate 13 close to the upper end are fixedly connected with a fixing plate 14, when in operation, the sampler 3 of the pipeline sampling valve can be opened by opening the first sealing plate 12 and the second sealing plate 13 on the pipeline sampling, the bearing 35 of the second piston 34 is separated from the second sampling tube 33, then the second piston 34 is pulled to separate from the second sampling tube 33, then the connecting tube is taken out and inserted into the second sampling tube 33, and then the first piston 32 is pulled to drive the first piston 32 to be above the inlet of the second sampling tube 33, at this time, the natural gas in the pipeline 4 can enter the inside of the second sampling tube 33, and then sampling can be carried out, after sampling is completed, the first piston 32 is firstly pressed to block the second sampling tube 33, the connecting tube on the second sampling tube 33 is drawn out, the second piston 34 is inserted into the second sampling tube 33, then the first piston 32 is moved to be above the inlet of the second sampling tube 33, then the second piston 34 is firstly pressed to completely block the second sampling tube 33, then the first piston 32 is pressed to the bottom, and then sampling is completed, so that the pipeline sampler 3 can be prevented from being directly exposed to the outside, thereby it has a large amount of dusts to influence pipeline sampler 3 and takes a sample to lead to piling up on the surface of sample valve, the accuracy when sampler 3 takes a sample to the natural gas has been ensured, and then the sampling efficiency of guarantee natural gas, the risk that receives external influence when reducing the sample, the stability of guarantee measurement personnel sample, guarantee the degree of accuracy of testing result, and through the sealing of baffle 1, make tie point on the baffle 1 all be located baffle 1's inside, and seal both sides, thereby make pipeline 4 and natural gas pipeline's tie point be in sealed space, avoid pipeline 4 and natural gas pipeline's tie point when leaking gas appearing, discovery that can not be timely, make the natural gas gather in this kind of inclosed space of basement, harm staff's personal safety.
As an embodiment of the present invention, the connection frame 2 includes a support rod 22 and a connection plate 24, one end of the support rod 22 is fixedly connected to the connection plate 24, the other end of the support rod 22 is fixedly connected to the baffle 1, a fixing groove 23 is formed on the outer surface of the baffle 1 corresponding to the connection plate 24, a threaded groove 21 is formed on the outer surface of the connection plate 24 on the side away from the support rod 22, and the pipeline 4 is fixedly connected to the outer surface of the connection plate 24 near the middle position, and when the sampling valve is operated, the whole sampling valve is wrapped by the first sealing plate 12 and the second sealing plate 13 on the baffle 1, so that the pipeline sampling valve is prevented from being directly exposed to the outside, but while the sampler 3 is protected, the connection point between the natural gas pipeline and the pipeline 4 can also generate a gas leakage phenomenon after long-time use, and in order to place the connection point inside, fixed slot 23 is all seted up in the both sides of baffle 1, make the natural gas pipeline when connecting, pass through fixed slot 23 to the one end of pipeline 4 and insert, make the flange all place on branch 22, and the flange laminates with branch 22's surface each other, fix two flanges, can accomplish fixedly through two pipeline 4 interconnect, and the junction of flange exposes in the inside of baffle 1, if the phenomenon of gas leakage appears in the junction of flange, the gas of so leaking will enter into baffle 1's inside, can directly not arrange in the space in the external world, the environment in external space has been ensured.
As an embodiment of the present invention, a clamp 231 is slidably connected to an inner surface of the fixing groove 23, a sliding groove 237 is formed in a position, above the fixing groove 23, of an outer surface of the baffle 1, a sliding rail 236 is formed at a lower end of the inner surface of the sliding groove 237, the sliding rail 236 is communicated with the fixing groove 23, a slot 235 is formed at a front end of the inner surface of the sliding groove 237, a gasket 232 is fixedly connected to an outer circumferential surface of the clamp 231, a fixed stopper 233 is slidably connected to an inner surface of the sliding groove 236, a lower end of the fixed stopper 233 is fixedly connected to the clamp 231, a fixed hole 234 is formed at an outer surface of a front end of the fixed stopper 233, diameters of the fixed hole 234 and the slot 235 are the same, an inserting rod 238 is slidably connected to inner surfaces of the fixed hole 234 and the slot 235, a threaded section is formed at, the flange connection point between the natural gas pipeline and the pipeline 4 is placed inside the fixing groove 23 to avoid the leakage of the natural gas at the flange connection point, but the height of the flange connection point is higher than that of the pipeline 4 connected with the flange, so there is a leakage space inside the fixing groove 23, which causes the gas inside the baffle 1 to leak out, therefore, when in use, the insertion rod 238 on the fixed block 233 is firstly detached, the two fixed blocks 233 are moved towards each other inside the sliding groove 237, the fixed block 233 moves inside the sliding groove 236 during the moving of the fixed blocks 233, when the two fixed blocks 233 are attached, the fixed hole 234 on the fixed block 233 corresponds to the insertion groove 235 at the middle position inside the sliding groove 237, at this time, the insertion rod 238 is inserted on the fixed hole 234, so that the two fixed blocks 233 are fixed inside the sliding groove 237, when the two fixed blocks 233 are close to each other, fixed dog 233 can drive anchor clamps 231 and remove, thereby it is close to each other to drive breach department on anchor clamps 231, when breach department on anchor clamps 231 is close to each other, can make anchor clamps 231's diameter reduce, anchor clamps 231 can drive sealed pad 232 on anchor clamps 231 when removing and move down, thereby can ensure that the edge of fixed slot 23 also is sealed when anchor clamps 231's diameter reduces, when two fixed dogs 233 are laminated each other, anchor clamps 231 breach department also can laminate, and the internal surface of anchor clamps 231 laminates each other with the outer disc of natural gas pipeline, thereby can make whole baffle 1 all be in encapsulated situation, make whole sample valve all wrap up by baffle 1, can avoid the natural gas dispersion to whole underground space when appearing leaking, threaten detection personnel's personal safety.
As an embodiment of the present invention, the purification box 5 includes a housing 57, a storage box 52, an exhaust fan 53, and an air inlet pipe 55, wherein an upper outer surface of the housing 57 is fixedly connected to the air inlet pipe 55, one end of the air inlet pipe 55 penetrates through the housing 57 and is fixedly connected to the exhaust fan 53, outer surfaces of both sides of the exhaust fan 53 are fixedly connected to an air outlet pipe 54, an inner surface of a lower end of the housing 57 is slidably connected to the storage box 52, a purifying agent 51 is filled in the storage box 52, one end of the air outlet pipe 54, which is far away from the exhaust fan 53, extends into the purifying agent 51, an exhaust pipe 56 is fixedly connected to an outer surface of an upper end of the housing 57, the exhaust pipe 56 is communicated with the interior of the housing 57, and during operation, each connection point of the whole sampling valve is in a sealed state through the baffle 1, so that safety of the connection point can be ensured, and, however, in the actual operation process, even if the whole device is wrapped, the leaked natural gas is still in the baffle 1, and the process of sampling is hindered, so that when sampling is performed, the exhaust fan 53 in the purification box 5 needs to be opened at first, air in the baffle 1 enters the exhaust fan 53 through the air inlet pipe 55, air in the baffle 1 enters the air outlet pipe 54 and is discharged, the air enters the purifying agent 51 in the storage box 52, and after being purified by the purifying agent 51, the air rises and rises from the exhaust pipe 56 and returns to the inside of the baffle 1 again, and after the baffle 1 is opened, a large amount of natural gas cannot escape, so that sampling is facilitated, and the sampling efficiency is improved.
As an embodiment of the present invention, one end of the supporting rod 22 is fixedly connected to an inner surface of an inner surface fixing groove 23 of the baffle 1, an edge of an inner surface of the fixing groove 23 is horizontally consistent with the supporting rod 22, when the pipeline 4 is installed inside the baffle 1, in operation, a flange on the baffle 1 is firstly placed on the supporting rod 22, an outer circumferential surface of the supporting rod 22 and an outer circumferential surface of the baffle 1 are attached to each other, and the width of the flange is equal to that of the baffle 1, so that the supporting rod 22 can provide a stable supporting function for the flange on the natural gas pipeline, and the bearing of a connection point on the flange is prevented from being positioned on a bolt connected with the flange when the pipeline shakes, thereby improving the stability of the flange.
The working principle is as follows: when the sampling device 3 of the pipeline sampling valve can be opened by opening the first sealing plate 12 and the second sealing plate 13 on the pipeline sampling valve, and then sampling can be carried out, when the sampling device is operated, the second piston 34 is firstly rotated to enable the bearing 35 of the second piston 34 to be separated from the second sampling pipe 33, then the sampling device is pulled to enable the sampling device to be separated from the second sampling pipe 33 by the second piston 34, then the connecting pipe is taken out to be inserted into the second sampling pipe 33, and then the first piston 32 is pulled to drive the first piston 32 to be above the inlet of the second sampling pipe 33, at the moment, natural gas in the pipeline 4 can enter the inner part of the second sampling pipe 33, sampling can be carried out, when sampling is finished, the first piston 32 is firstly pressed to enable the second sampling pipe 33 to be blocked, the connecting pipe on the second sampling pipe 33 is drawn out, the second piston 34 is inserted into the second sampling pipe 33, and then the first piston 32 is moved to be above the inlet of the second sampling pipe 33, then the second piston 34 is pressed first, the second sampling pipe 33 is completely plugged, the first piston 32 is pressed to the bottom, sampling is completed, the pipeline sampler 3 can be prevented from being directly exposed to the outside, so that a large amount of dust is accumulated on the surface of the sampling valve to influence the pipeline sampler 3 to sample, the accuracy of the sampler 3 in sampling the natural gas is guaranteed, the sampling efficiency of the natural gas is further guaranteed, the risk of being influenced by the outside during sampling is reduced, the sampling stability of a tester is guaranteed, the accuracy of a detection result is guaranteed, and through the sealing of the baffle plate 1, the connection points on the baffle plate 1 are both positioned in the baffle plate 1 and are sealed on two sides, so that the connection points of the pipeline 4 and the natural gas pipeline are positioned in a sealed space, and the connection points of the pipeline 4 and the natural gas pipeline are prevented from leaking gas, the natural gas cannot be found in time, so that the natural gas is gathered in the closed space of the basement, and the personal safety of workers is harmed.
The exhaust fan 53 and the use process of the above components are provided by the background information provided by the present invention, and the description of the present invention is combined, so that the skilled person can obtain the use process and obtain the corresponding use effect, and therefore, the use process is not disclosed one by one.
The electric elements in the document are electrically connected with an external main controller and 220V mains supply through a transformer, the main controller can be a conventional known device controlled by a computer and the like, the product model provided by the invention is only used according to the structural characteristics of the product, the product can be adjusted and modified after being purchased, so that the product is more matched with and accords with the technical scheme of the invention, the product model is a technical scheme of the optimal application of the technical scheme, the product model can be replaced and modified according to the required technical parameters, and the product model is familiar to the technical personnel in the field, so that the technical scheme provided by the invention can clearly obtain the corresponding use effect.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a natural gas line sampling valve which characterized in that: the device comprises a baffle (1), a connecting frame (2), a sampler (3) and a purifying box (5), wherein the purifying box (5) is positioned at the lower end of the baffle (1) and is fixedly connected with the baffle (1), the connecting frame (2) is positioned on the inner surface of the baffle (1) and is fixedly connected with the baffle (1), and the sampler (3) is positioned inside the baffle (1);
the sampler (3) comprises a first sampling tube (31), a second sampling tube (33), a first piston (32) and a second piston (34), the first piston (32) is positioned inside the first sampling tube (31), the second piston (34) is positioned inside the second sampling tube (33), the lower ends of the first piston (32) and the second piston (34) are fixedly connected with a rubber plate (36), the outer circular surface of the rubber plate (36) is tightly attached to the inner wall of the first sampling tube (31), the outer circular surface of the second piston (34) is fixedly connected with a bearing (35) close to the upper end, and the outer surface of the bearing (35) is provided with a threaded section;
the inner surface of one side of baffle (1) is close to the position at edge and has been seted up annular groove (11), the position sliding connection that the inner surface of annular groove (11) is close to the rear end has second closing plate (13), and the position sliding connection that the inner surface of annular groove (11) is close to the front end has first closing plate (12), the position fixedly connected with bottom plate (15) of one side inner surface of baffle (1) is close to the lower extreme, the surface of first closing plate (12) and second closing plate (13) all hugs closely with the inner surface of bottom plate (15), and its junction is provided with the sealing washer, the equal fixedly connected with fixed plate (14) of the position that the surface of first closing plate (12) and second closing plate (13) is close to the upper end.
2. The natural gas pipeline sampling valve of claim 1, wherein: link (2) include branch (22), connecting plate (24), the one end and the connecting plate (24) fixed connection of branch (22), and the other end and baffle (1) fixed connection of branch (22), fixed slot (23) have been seted up to the position that the surface of baffle (1) corresponds connecting plate (24), threaded groove (21) have been seted up to one side surface that branch (22) were kept away from in connecting plate (24), the surface of connecting plate (24) is close to middle position fixedly connected with pipeline (4).
3. The natural gas pipeline sampling valve of claim 1, wherein: the inner surface of the fixing groove (23) is connected with a clamp (231) in a sliding manner, a sliding groove (237) is formed in the position, above the fixing groove (23), of the outer surface of the baffle plate (1), a sliding way (236) is formed in the lower end of the inner surface of the sliding groove (237), the sliding way (236) is communicated with the fixing groove (23), a slot (235) is formed in the front end of the inner surface of the sliding groove (237), a sealing gasket (232) is fixedly connected to the outer circular surface of the clamp (231), a fixing block (233) is connected to the inner surface of the sliding way (236) in a sliding manner, the lower end of the fixing block (233) is fixedly connected with the clamp (231), a fixing hole (234) is formed in the outer surface of the front end of the fixing block (233), the diameter of the fixing hole (234) is the same as that of the slot (235), and, one end of the clamp (231) is provided with a threaded section, and the clamp (231) is made of hard rubber.
4. The natural gas pipeline sampling valve of claim 1, wherein: purifying box (5) include shell (57), storage case (52), air exhauster (53), air-supply line (55), the upper end surface and air-supply line (55) fixed connection of shell (57), the one end of air-supply line (55) runs through shell (57) and air exhauster (53) fixed connection, the equal fixedly connected with of both sides surface of air exhauster (53) goes out tuber pipe (54), the lower extreme internal surface and storage case (52) sliding connection of shell (57), the inside of storage case (52) is poured into decontaminating agent (51), the one end that air exhauster (53) was kept away from in air-out pipe (54) is deep into the inside of decontaminating agent (51), the equal fixedly connected with blast pipe (56) of upper end surface of shell (57), the inside intercommunication of blast pipe (56) and shell (57).
5. The natural gas pipeline sampling valve of claim 1, wherein: one end of the supporting rod (22) and the edge, close to the fixing groove (23), of the inner surface of the baffle plate (1) are fixedly connected with the inner surface of the fixing groove (23), and the edge of the inner surface of the fixing groove (23) is horizontally consistent with the supporting rod (22).
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| CN202011520466.6A CN112648421B (en) | 2020-12-21 | 2020-12-21 | Natural gas line sampling valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116519433A (en) * | 2023-06-29 | 2023-08-01 | 辽宁高盛新能源有限公司 | Liquefied natural gas sampling device convenient to operation |
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| CN112648421B (en) | 2022-07-01 |
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Effective date of registration: 20220615 Address after: 450000 No. 702, floor 7, building 1, No. 85, Jinshui East Road, Zhengzhou area (Zhengdong), pilot Free Trade Zone, Zhengzhou City, Henan Province Applicant after: Henan Tiantai Natural Gas Co.,Ltd. Address before: 266000 building 7, Baoli Baihe garden, 12 Jinhua Branch Road, Shibei District, Qingdao City, Shandong Province Applicant before: Li Zuyu |
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