CN214749206U - Quick sampling device of gas pipeline - Google Patents

Abstract

The utility model relates to the field of gas sampling and detecting, in particular to a gas pipeline rapid sampling device, which comprises a gas storage bottle and a sampling tee joint, wherein the gas storage bottle is provided with an inlet and an outlet, the inlet and the outlet are respectively connected with a valve control pipeline, the valve control pipeline is far away from the tail end of the gas storage bottle and is provided with a rapid plug joint I, the sampling tee joint is arranged between a pipeline pressure gauge and a pressure gauge cock, the sampling tee joint is provided with a rapid plug joint II, the rapid plug joint I and the rapid plug joint II can be connected in a matching way, the sampling device has small change to the existing gas pipeline, avoids the safety risk generated in the improvement process, simultaneously has simple, convenient and rapid sampling operation, reduces the current situation that the gas quantity of the empty bottle is too small in the sampling process to the maximum extent, and reduces the factor causing secondary interference to the gas sample because the pressure gauge does not need to be disassembled or assembled in the sampling process, the current situations of excessive impurities and abnormal components in the sampling process are overcome.

Description

Quick sampling device of gas pipeline

Technical Field

The utility model relates to a gas sampling test field, in particular to quick sampling device of gas pipeline.

Background

The quality of natural gas is a topic commonly concerned by both natural gas supply and demand parties, and in order to ensure the quality of the natural gas output externally, a gas transmission station worker needs to regularly sample and analyze natural gas in a station yard and a valve chamber so as to obtain relevant parameters of a pipeline transmission medium, and the parameters are used for guiding the modification of corresponding process parameters of a gas production process.

At present, no special natural gas sampling interface is arranged on each station and valve chamber process pipeline, when natural gas sampling operation is carried out, an upper opening of a pipeline is generally obtained by adopting a mode of disassembling existing equipment on a pipeline, then a sampling container with a connector and a valve is connected with the upper opening of the pipeline, the upper opening of the pipeline is generally obtained by adopting a mode of disassembling a pressure gauge for monitoring the pipeline, in order to ensure safety, the flow needs to be shut off before sampling, equipment is reset after secondary shutdown after sampling is finished, the time consumption of a single sampling process is more, meanwhile, because the sampling times are more and the disassembly times of the pressure gauge are more, the normal conveying of natural gas is influenced, the safety hidden danger is easily caused in each disassembly and assembly process, and a gas sample is easily subjected to secondary interference, the detection result is unqualified, the detection accuracy is influenced, and personnel are required to go to and go back to the station and between the station and the detection mechanism, and more manpower and material resources are consumed, and according to incomplete statistics, the unqualified samples with at least 2 times of empty bottles, 5 times of excessive gas sample impurities, 6 times of abnormal components and 1 time of too little gas appear in the 102 sampling processes in a year.

Therefore, a technical scheme is urgently needed at present to solve the technical problems that the time consumption is high, the potential safety hazard exists, the obtained gas sample is unqualified, and the detection accuracy is influenced in the natural gas sampling process on the existing sampling and transmission pipeline.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: to the natural gas sampling process is consuming time more on the current gathering and transportation pipeline, has the potential safety hazard, and gets the gas sample unqualified, influences the technical problem that detects the accuracy, provides a quick sampling device of gas pipeline.

In order to realize the purpose, the utility model discloses a technical scheme be:

the utility model provides a quick sampling device of gas pipeline, includes gas bomb and sample tee bend, be provided with entry and export on the gas bomb, the entry with the export is connected with the valve accuse pipeline respectively, the valve accuse pipeline is kept away from the end of gas bomb is provided with quick connector one, the sample tee bend sets up between pipeline pressure table and manometer cock, be provided with quick connector two on the sample tee bend, quick connector one with quick connector two can cooperate the connection.

The utility model discloses a quick sampling device of gas pipeline, set up the sample tee bend between pipeline pressure table and manometer cock through adopting, dedicated sample opening has been increased for the pipeline, change to current gas pipeline is less, avoid improving the process and produce the safety risk, and simultaneously, adopt quick connector one and quick connector two to carry out the high-speed joint, realize the quick intercommunication of gas bomb and gas pipeline, moreover, the steam generator is simple in structure, the operation is convenient fast, only need to locate the valve through control cock, valve on the valve control pipeline, can realize accomplishing the sample under the condition that does not cut off the flow, the simple convenient and fast of sampling operation, the biggest reduction the sampling process appears empty bottle and the current situation that the gas volume is too little, and because the sampling process does not need the dismouting manometer, the factor that causes the secondary interference to the gas appearance has been reduced, the sampling process has been overcome and has appeared impurity too much, Status quo of abnormal composition.

As the utility model discloses a preferred scheme, fast bayonet joint one with be provided with one-way valve core in the fast bayonet joint two respectively, be provided with in the fast bayonet joint one and be used for promoting two the slider that one-way valve core removed, the slider can with the sealed cooperation of fast bayonet joint two. The two one-way valve cores are arranged oppositely, and the sliding piece arranged in the quick plug connector I in a sliding mode pushes the two one-way valve cores to move, so that the communication and cut-off control of the gas storage cylinder and the gas pipeline are achieved.

As the utility model discloses a preferred scheme, the valve accuse pipeline includes the coupling component and sets up the last block valve of coupling component, coupling component one end with gas bomb threaded connection, the other end with a quick-witted threaded connection of pegging graft. The mode of threaded connection can be under the circumstances of guaranteeing to connect the gas tightness, makes things convenient for the preparation and the on-the-spot connection equipment of each part, makes things convenient for this sampling device's use.

As the utility model discloses a preferred scheme, the gas bomb includes threaded connection's last jar of body and lower jar of body, the entry sets up go up the top of jar of body, the export sets up the bottom of jar of body down. The combined gas storage bottle is convenient for on-site flexible assembly of all parts, so that the capacity of the gas storage bottle can be adjusted according to different extraction gas amounts.

As the utility model discloses a preferred scheme, go up jar body be equipped with the guide cylinder in the entry, guide cylinder threaded connection has the inner tank, be provided with the intercommunicating pore on the inner tank wall. Bilayer structure's gas bomb makes the air current get into the clearance between inner tank and the gas bomb behind the inner tank, increases the hindrance effect to the gas air current, not only slows down the air velocity of sample process, the solid impurity in the reduction gas sample that moreover can the at utmost.

As the utility model discloses a preferred scheme, entry female connection has the shrouding, be connected with the coil pipe on the shrouding, be provided with a plurality of exhaust holes on the coil pipe, the coil pipe extends to in the inner tank. Through setting up the coil pipe, the flow path of extension gas in the gas bomb, solid impurity in the gas is in the gas flow in-process is blocked the coil pipe, reduces gradually, is favorable to improving the quality of sample gas, makes the gas sample analysis result of acquireing more accurate.

As the preferred proposal of the utility model, a solvent bag used for containing saturated salt water is arranged in the inner tank. According to the practical situation, the gas sample is output after passing through the saturated salt water, and the impurity solvent influencing the analysis of the gas sample is in the saturated salt water, so that the influence on the analysis result of the gas sample is avoided.

As the utility model discloses an optimal scheme, the outside bottom of inner tank is provided with the ring body, be provided with the air guide hole on the ring body, the inboard bottom of the lower jar of body is provided with the sealing washer, the ring body with the cooperation of sealing washer butt. Make the air current just can follow export output after entering mouth, exhaust hole, intercommunicating pore, air guide hole in proper order, extension air current flow path avoids the gas appearance to appear empty bottle, current defects such as impurity are more.

To sum up, owing to adopted above-mentioned technical scheme, the utility model discloses a quick sampling device of gas pipeline's beneficial effect is:

1. by arranging the sampling tee joint between the pipeline pressure gauge and the pressure gauge cock, a special sampling opening is added for the pipeline, the existing gas pipeline is slightly changed, and the safety risk generated in the improvement process is avoided;

2. the quick connection connector I and the quick connection connector II are adopted for quick connection, so that the gas storage bottle is quickly communicated with a gas pipeline, the structure is simple, the operation is quick and convenient, the sampling can be completed under the condition of not cutting off the flow only by controlling a valve at the cock and a valve on a valve control pipeline, the sampling operation is simple, convenient and quick, and the current situation of empty bottles and too small gas amount in the sampling process is reduced to the maximum extent;

3. because the manometer does not need to be disassembled and assembled in the sampling process, the factor of secondary interference to the gas sample is reduced, and the current situations of excessive impurities and abnormal components in the sampling process are overcome.

Drawings

Fig. 1 is a schematic structural diagram of the rapid sampling device for a gas pipeline of the present invention.

Fig. 2 is a schematic structural diagram of the first quick connector and the second quick connector of the present invention.

Fig. 3 is a schematic view of the internal structure of the gas bomb described in embodiment 2.

Fig. 4 is a schematic structural diagram of a gas pipeline rapid sampling device of embodiment 4.

Fig. 5 is an implementation schematic diagram of the rapid sampling device for a gas pipeline of the present invention.

Reference numbers in the figures: 1-gas storage bottle, 11-inlet, 12-outlet, 13-upper tank, 14-lower tank, 15-sealing ring, 16-guide cylinder, 2-sampling three-way, 3-valve control pipeline, 31-joint component, 32-block valve, 33-adapter, 4-quick-plug first, 41-one-way valve core, 42-sliding piece, 421-cylinder, 422-channel, 423-through hole, 424-rib, 43-spring, 5-pressure gauge cock, 6-quick-plug second, 7-sealing plate, 71-coil pipe, 72-vent hole, 8-inner tank, 81-communication hole, 82-annular body, 83-vent hole, 9-solvent bag, 10-pipeline and 20-pressure gauge.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Example 1

As shown in fig. 1-5, a quick sampling device of gas pipeline, includes gas bomb 1, and 1 top of gas bomb sets up to the entry 11, and the bottom sets up to export 12, entry 11 with export 12 is connected with valve accuse pipeline 3 respectively, valve accuse pipeline 3 keeps away from the end of gas bomb 1 is provided with quick connector 4, still includes sample tee bend 2, sample tee bend 2 sets up between pipeline 10 manometer 20 and manometer cock 5, set up quick connector two 6 on the sample tee bend 2, quick connector one 4 with quick connector two 6 can cooperate the connection, and when treating the user state, quick connector one 4 and quick connector two 6 are equipped with the safety cap respectively and seal up.

The gas pipeline rapid sampling device of the embodiment, each valve control pipeline 3 comprises a joint component 31 and a block valve 32 arranged on the joint component 31, on-off control of the valve control pipeline 3 can be realized by controlling the on-off state of the block valve 32, a first quick connector 4 and a second quick connector 6 are quick connectors capable of being in plug connection, rapid connection and separation between the sampling device and the pipeline 10 can be realized, safety caps in conventional threaded connection are arranged on the first quick connector 4 and the second quick connector 6, the structure is simple, the sampling operation is simple, convenient and rapid, sampling can be completed without cutting off the flow only by controlling a valve at a cock and a valve on the valve control pipeline 3, the time required by the sampling process is greatly reduced, in the sampling process, an inlet 11 and an outlet 12 are both in a conducting state, and the airflow sampled by the sampling device is airflow flowing through the gas storage bottle 1, the current situation that the empty bottle and the gas amount are too small in the sampling process is reduced to the maximum degree, secondary pollution to the gas sample is avoided, according to statistics, the sampling time after improvement is shortened to 4min, the sampling success rate is 100%, and the sampling qualified rate is 100%.

Specifically, in this embodiment, before sampling, the pipeline 10 is modified, the sampling tee joint 2 is additionally arranged between the pressure gauge 20 and the pressure gauge cock 5 of the pipeline 10, the quick connector II 6 is arranged on the sampling tee joint 2, the top end of the sampling tee joint 2 is in threaded connection with the pressure gauge 20, the bottom end of the sampling tee joint is in threaded connection with the pressure gauge cock 5, and the side wall is provided with the interface and is in threaded connection with the quick connector II 6, so that the modification of the existing gas pipeline 10 is small, thereby avoiding the safety risk in the modification process, and because the pressure gauge 20 does not need to be disassembled and assembled in the sampling process, the factor of secondary interference on a gas sample is reduced, the current situations of excessive impurities and abnormal components in the sampling process are overcome, during sampling, the cutoff valves 32 on the inlet 11 and the outlet 12 are opened, so that the inlet 11 and the outlet 12 are both in a conduction state, flowing gas flow is formed in the gas storage bottle 1, and when sampling needs to be finished, the cutoff valve 32 at the outlet 12 is closed, close 11 department of entry stop valve again for can be very fast fill the tolerance that satisfies the measuring requirement in the gas bomb 1, when needing again to derive gas appearance in the gas bomb 1, only need to be connected 12 quick connector 4 of department of export with the quick connector two 6 of setting on detection device, make the air current get into detection device and detect, it is more convenient to operate, and is difficult to appear the secondary pollution to gas appearance.

Preferably, the connector assembly 31 is a two-way pipe connector assembly, one end of the connector assembly is connected with the gas storage bottle in a threaded manner, the other end of the connector assembly is connected with the first quick connector 4 in a threaded manner, the middle of the connector assembly is provided with a cut-off valve 32 which is used for connecting the first quick connector 4 with the gas storage bottle 1 and increasing the distance between the first quick connector 4 and the gas storage bottle 1, when the first quick connector 4 is connected with the second quick connector 6 on the sampling tee joint 2, the distance between the gas storage bottle 1 and the pipeline 10 is increased, and the inconvenience in sampling operation caused by the fact that the gas storage bottle 1 is too close to the pipeline 10 is avoided.

Specifically, joint Assembly 31 is including setting up two adapter 33 in 11 departments of gas cylinder entry, two adapter 33 bottoms and 1 entry 11 threaded connection of gas bomb, and the top sets up block valve 32, and the lateral wall sets up the external screw thread linkage section, and this external screw thread linkage section passes through the adapter 33 that loose joint nut connects a connector and constitutes, be provided with on the connector 33 be used for with the internal thread hole of quick connector 4 adaptations, also corresponding setting adapter 33 between sample tee bend 2 and quick connector two 6, make the mutual threaded connection through a plurality of parts, make things convenient for the connection equipment of each part, simple structure can provide safety, swift, the longer connection package assembly structure of life for special operating mode environment such as station under the circumstances of guaranteeing to connect the gas tightness, make things convenient for this sampling device's use.

Preferably, the quick connector 4 and the quick connector 6 are respectively provided with a one-way valve core 41, the quick connector 4 is internally provided with a sliding part 42 for pushing the two one-way valve cores 41 to move, and the sliding part 42 can be in sealing fit with the quick connector 6. As shown in fig. 2, the first quick connector 4 and the second quick connector 6 of this embodiment each include, in an external structure, a housing capable of achieving quick connection, a flow passage through which air flows is provided in the housing, a check valve core 41 is provided in the housing, the flow passage is adjusted in inner diameter according to a setting position of the check valve core 41, a spring 43 is provided in the check valve core 41, the mounting directions of the check valve cores 41 in the first quick connector 4 and the second quick connector 6 are opposite and opposite, a sliding member 42 is slidably provided in the first quick connector 4, so that when the first quick connector 4 is not connected to the second quick connector 6, the spring 43 in the first quick connector 4 pushes the check valve core 41 to be attached to and sealed with the housing, and one end of the sliding member 42 is pushed out of the housing, the spring 43 in the second quick connector 6 pushes the valve core 41 to be attached to and sealed with the housing, and when the first quick connector 4 is connected to the second quick connector 6, the sliding part 42 pushes the two one-way valve cores 41 to move, so that the inner flow channels of the first quick connector 4 and the second quick connector 6 are communicated, and the communication and the cut-off control of the gas storage cylinder 1 and the gas pipeline 10 are realized.

Specifically, the sliding member 42 includes a cylinder 421, a channel 422 is disposed in the cylinder 421 along the length direction, a through hole 423 communicating with the channel 422 is disposed on a side wall close to the end face, a protruding rib 424 adapted to the inner cavity of the housing of the first quick connector 4 is disposed on the cylinder 421, and the sliding member 42 is limited in the first quick connector 4 by the protruding rib 424.

Preferably, this embodiment still is provided with the opening that the safety helmet seals fast bayonet joint one 4 and fast bayonet joint two 6, the gas leakage condition appears when avoiding fast bayonet joint trouble, and the safety helmet can select prior art's block structure, also can adopt the fast bayonet joint one 4 and the fast bayonet joint two 6 of cancellation slider to connect, realizes fast plug sealing connection of fast bayonet joint one 4 and fast bayonet joint two 6, realizes the shutoff respectively of fast bayonet joint one 4 or fast bayonet joint two 6 when treating the user state.

The sampling device of this embodiment installs sample tee bend 2 between the manometer 20 of pipeline 10 and manometer cock 5 before taking a sample for the first time, installs quick connector two 6 on sample tee bend 2 be provided with the safety helmet on the quick connector two 6, specifically adopt following step when taking a sample: the method comprises the following steps: after checking and confirming that the block valves 32 of the two valve-controlled pipelines 3 on the gas storage cylinder 1 are both in a closed state, taking down the safety cap, and carrying out plug connection on the first quick plug connector 4 and the second quick plug connector 6; step two: opening a stop valve 32 on the valve-controlled pipeline 3 at the outlet 12, then opening the stop valve 32 on the valve-controlled pipeline 3 at the inlet 11, and then opening a stop valve 32 at a cock 5 of a pressure gauge, so that natural gas enters the gas storage bottle 1, and synchronously timing; step three: after the timing is finished, closing the stop valve 32 on the valve-controlled pipeline 3 at the outlet 12, then closing the stop valve 32 at the cock 5 of the pressure gauge, and then closing the stop valve 32 on the valve-controlled pipeline 3 at the inlet 11; step four: and separating the first quick plug connector 4 and the second quick plug connector 6, recovering the arrangement of the safety helmet, and finishing sampling.

Example 2

As shown in fig. 3, the structure of the rapid sampling device for a gas pipeline of this embodiment is the same as that of embodiment 1, except that: the gas storage bottle 1 comprises an upper tank body 13 and a lower tank body 14 which are connected in a threaded mode, the inlet 11 is arranged at the top of the upper tank body 13, and the outlet 12 is arranged at the bottom of the lower tank body 14.

The quick sampling device of a gas pipeline of this embodiment adopts the gas bomb of combination formula, because the threaded connection structure of last jar of body 13 and lower jar of body 14 makes things convenient for the on-the-spot nimble equipment of each part for can be according to the difference of drawing the tolerance, through selecting the lower jar of body 14 that has the same connecting thread, different internal capacity, the whole capacity of easier adjustment gas bomb.

The sampling device of the present embodiment adopts the steps as in embodiment 1, and sets the following steps before step one: the upper tank 13 and the lower tank 14 are separated, the inner tank 8 containing the solvent bag 9 is installed in the upper tank 13, the solvent bag 9 is crushed by the coil 71, and then the connection between the upper tank 13 and the lower tank 14 is restored. Make can be according to the selective solvent bag 9 that sets up of actual conditions, realize the contrast of sample result, can be according to actual conditions, adopt and set up the structure of protruding cutter in coil pipe 71 bottom, make 8 installation in the inner tank, coil pipe 71 cuts and gets into solvent bag 9 behind the solvent bag 9, make gas appearance need pass through the saturated salt solution among the solvent bag 9 after the output from coil pipe 71 and just can get into in the clearance between inner tank 8 and the outer jar from the intercommunicating pore 81 of inner tank 8 upside, export from gas guide hole 83, make the gas appearance of output pass through the preliminary treatment, the impurity that disturbs the testing result has been got rid of in the sampling process, reduce detection time, improve and detect the accuracy.

Example 3

As shown in fig. 3, the structure of the rapid sampling device for a gas pipeline of this embodiment is the same as that of embodiment 2, except that: the inlet 11 is internally threaded with a sealing plate 7, the sealing plate 7 is connected with a coil pipe 71, the coil pipe 71 is provided with a plurality of exhaust holes 72, and the exhaust holes 72 are formed in the side wall of the coil pipe 71.

The quick sampling device of a gas pipeline of this embodiment through setting up coil pipe 71, prolongs the flow path of gas in gas bomb 1, and solid impurity in the gas is in gas flow in-process is blocked coil pipe 71, reduces gradually, is favorable to improving the quality of sample gas, makes to obtain that gas appearance analysis result is more accurate.

Specifically, coil pipe 71 open-top and the inside runner intercommunication of joint Assembly 31, coil pipe 71 has multilayer heliciform pipeline section, arrange on coil pipe 71 towards the lateral wall of gas bomb 1 inner wall and set up exhaust hole 72, make the air current striking gas bomb 1 inner wall from coil pipe 71 output, slow down the flow velocity of air current, impurity in the dispersion air current, make the detention that the air current can be more in gas bomb 1, realize filling the tolerance that satisfies the measuring requirement in making gas bomb 1 in shorter time, avoid the sampling process to cause too much gas waste, also reduce the sample time.

Example 4

As shown in fig. 1 to 5, the structure of the rapid sampling device for a gas pipeline of the present embodiment is the same as that of embodiment 3, except that: go up jar body 13 be equipped with guide cylinder 16 in the entry 11, guide cylinder 16 threaded connection has inner tank 8, be provided with intercommunicating pore 81 on the inner tank 8 wall, coil pipe 71 extends to in the inner tank 8, the outside bottom of inner tank 8 is provided with the ring body 82, be provided with air guide hole 83 on the ring body 82, the inboard bottom of the lower jar body 14 is provided with sealing washer 15, the ring body 82 with sealing washer 15 butt cooperation.

The quick sampling device of a gas pipeline of this embodiment, set up 8 shaping bilayer structure's of inner tank gas bomb 1 in the gas bomb, from the gas air current that enters into 11 entries, need pass through entry 11 in proper order, exhaust hole 72, the intercommunicating pore 81, just can export 12 outputs after the gas guide hole 83, extension air current flow route, and the increase that inner tank 8 also can be further is to the hindrance effect of gas air current, slow down the air velocity of sample process, reduce the gas bomb and fill the time of the tolerance that accords with the detection, solid impurity in the reduction analysis gas sample that also can the at utmost, avoid the gas sample empty bottle to appear, the current defect such as impurity is more, the qualification rate of gas sample has also been improved.

Specifically, inner tank 8 adopts threaded connection's mode and sets up the guide cylinder 16 at the internal top of last jar and be connected, and connection structure is simple, and the connection process is convenient, can make the sample process suit with the actual sample demand according to the selective installation inner tank 8 of actual conditions, and sealing washer 15 sets up the annular rubber circle of the inboard bottom of jar body 14 under for the embedding, can produce deformation with the annular body 82 butt in-process, realizes sealedly.

Preferably, a solvent bag 9 for containing saturated saline solution is arranged in the inner tank 8. Can open solvent bag 9 according to actual conditions, make the gas sample get into inner tank 8 after, export again through the washing of saturated salt solution, impurity solvent that influence gas sample analysis wherein in saturated salt solution, the gas sample composition of obtaining that can be more accurate avoids impurity to influence gas sample analysis result.

Specifically, this embodiment adopts and places solvent bag 9 back in the inner tank, sets up sharp-pointed cutter in coil pipe 71 bottom, makes the inner tank installation, realizes that solvent bag 9's automation is opened, makes the coil pipe get into in the solvent bag 9, fills the dress in-process at the air current, and the air current is through saturated salt solution after, from the opening output that the cutter cut, gets into inner tank 8, again from the clearance output between the inner tank and the outer tank.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (8)

1. The utility model provides a quick sampling device of gas pipeline, its characterized in that, includes gas bomb (1) and sample tee bend (2), be provided with entry (11) and export (12) on gas bomb (1), entry (11) with export (12) are connected with valve accuse pipeline (3) respectively, valve accuse pipeline (3) are kept away from the end of gas bomb (1) is provided with quick connector (4), sample tee bend (2) set up between pipeline manometer (20) and manometer cock (5), be provided with quick connector two (6) on sample tee bend (2), quick connector (4) with quick connector two (6) can cooperate the connection.

2. The quick sampling device for the gas pipeline as recited in claim 1, characterized in that a one-way valve core (41) is respectively arranged in the first quick connector (4) and the second quick connector (6), a sliding member (42) for pushing the two one-way valve cores (41) to move is arranged in the first quick connector (4), and the sliding member (42) can be in sealing fit with the second quick connector (6).

3. The gas pipeline rapid sampling device according to claim 1, wherein the valve-controlled pipeline (3) comprises a connector assembly (31) and a block valve (32) arranged on the connector assembly (31), one end of the connector assembly (31) is in threaded connection with the gas storage cylinder (1), and the other end of the connector assembly (31) is in threaded connection with the first quick connector (4).

4. A gas pipeline rapid sampling device as claimed in any one of claims 1 to 3, characterized in that the gas bomb (1) comprises an upper tank (13) and a lower tank (14) which are connected by screw threads, the inlet (11) is arranged at the top of the upper tank (13), and the outlet (12) is arranged at the bottom of the lower tank (14).

5. The quick sampling device of a gas pipeline as claimed in claim 4, characterized in that a guide cylinder (16) is arranged in the inlet (11) of the upper tank body (13), the guide cylinder (16) is connected with the inner tank (8) in a threaded manner, and a communication hole (81) is arranged on the wall of the inner tank (8).

6. The quick sampling device for the gas pipeline as recited in claim 5, characterized in that the inlet (11) is internally threaded with a sealing plate (7), the sealing plate (7) is connected with a coil pipe (71), a plurality of exhaust holes (72) are arranged on the coil pipe (71), and the coil pipe (71) extends into the inner tank (8).

7. A gas pipeline rapid sampling device as claimed in claim 6, characterized in that a solvent bag (9) for containing saturated salt water is arranged in the inner tank (8).

8. The rapid sampling device for the gas pipeline as recited in claim 7, characterized in that an annular body (82) is disposed at the bottom of the outer side of the inner tank (8), an air vent (83) is disposed on the annular body (82), a sealing ring (15) is disposed at the bottom of the inner side of the lower tank (14), and the annular body (82) is in abutting fit with the sealing ring (15).

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