CN115479810A - Quick sampling device and sampling method for gas pipeline - Google Patents

Abstract

The invention relates to the field of gas sampling detection, in particular to a rapid sampling device and a sampling method for a gas pipeline, wherein the sampling device comprises a gas storage bottle and a sampling tee joint, 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 tail end of the valve control pipeline, which is far away from the gas storage bottle, is provided with a first quick plug, the sampling tee joint is arranged between a pipeline pressure gauge and a pressure gauge, the sampling tee joint is provided with a second quick plug, and the first quick plug and the second quick plug can be connected in a matched manner.

Description

Quick sampling device and sampling method for gas pipeline

Technical Field

The invention relates to the field of gas sampling detection, in particular to a rapid sampling device and a rapid sampling method for a 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 flow pipeline, when natural gas sampling operation is carried out, an upper opening of a pipeline is obtained by generally 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 obtained by generally 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, due to the fact that the sampling times are more, the normal conveying of natural gas can be influenced, the potential safety hazard can be easily caused in the process of disassembling and assembling each time, the gas sample is easily subjected to secondary interference, the detection result is unqualified, the detection accuracy is influenced, personnel are required to go to and go back to the station and forth between the station and the detection mechanism, more manpower and material resources are consumed, and incomplete statistics is carried out, and in the 102 sampling processes of a certain year, at least 2 times of empty bottles, 5 times of gas sample impurities are excessive, 6 times of abnormal components and 1 time of unqualified gas quantity is caused.

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.

Disclosure of Invention

The invention aims to: the quick sampling device and the sampling method for the gas pipeline are provided for solving 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 gas sampling and transportation pipeline.

In order to achieve the purpose, the invention adopts the technical scheme that:

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.

According to the quick sampling device for the gas pipeline, the sampling tee joint is arranged 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, the safety risk caused in the improvement process is avoided, meanwhile, the quick plug-in connector I and the quick plug-in connector II are adopted for quick connection, the quick communication between the gas storage bottle and the gas pipeline is realized, the structure is simple, the operation is quick and convenient, the sampling can be completed under the condition that the flow is not cut off only by controlling the valve at the cock and the valve on the valve control pipeline, the sampling operation is simple, convenient and quick, the current situation that the empty bottle and the gas amount are too small in the sampling process is reduced to the greatest extent, the pressure gauge does not need to be disassembled and assembled in the sampling process, the factor causing secondary interference to the gas sample is reduced, and the current situations that the sampling process is excessive in impurity and abnormal components are overcome.

As a preferable scheme of the invention, the first quick plug connector and the second quick plug connector are respectively provided with a one-way valve core, a sliding piece for pushing the two one-way valve cores to move is arranged in the first quick plug connector, and the sliding piece can be in sealing fit with the second quick plug connector. 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 a preferable scheme of the invention, the valve control pipeline comprises a joint component and a cut-off valve arranged on the joint component, wherein one end of the joint component is in threaded connection with the gas storage cylinder, and the other end of the joint component is in threaded connection with the quick plug-in connector. 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 a preferable scheme of the invention, the gas storage cylinder comprises an upper tank body and a lower tank body which are connected in a threaded manner, the inlet is arranged at the top of the upper tank body, and the outlet is arranged at the bottom of the lower tank body. 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 a preferable scheme of the invention, a guide cylinder is arranged in the inlet of the upper tank body, the guide cylinder is in threaded connection with an inner tank, and a communicating hole is formed in the wall of the inner tank. 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 a preferable scheme of the present invention, the inlet is connected with a sealing plate through an internal thread, the sealing plate is connected with a coil pipe, the coil pipe is provided with a plurality of exhaust holes, and the coil pipe extends into 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 a preferable scheme of the invention, a solvent bag for containing saturated saline solution 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 a preferable scheme of the invention, the bottom of the outer side of the inner tank is provided with an annular body, the annular body is provided with an air guide hole, the bottom of the inner side of the lower tank body is provided with a sealing ring, and the annular body is in butt fit with the sealing ring. 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.

The utility model provides a gas pipeline rapid sampling method, adopts sampling device as above to before first sample, install the sample tee bend between pipeline pressure table and cock, install quick connector II on the sample tee bend quick connector II is last to be provided with the safety helmet, specifically includes following step when the sample: the method comprises the following steps: after checking and confirming that the block valves of the two valve control pipelines on the gas storage cylinder are in a closed state, taking down the safety cap on the quick plug connector I on the gas storage cylinder, taking down the safety cap on the quick plug connector II on the sampling tee joint, and carrying out plug connection on the quick plug connector I and the quick plug connector II; step two: opening a cut-off valve on the valve control pipeline at the outlet, then opening the cut-off valve on the valve control pipeline at the inlet, then opening a cut-off valve at the cock of a pressure gauge, so that the natural gas enters the gas storage cylinder, and synchronously timing; step three: after timing is finished, closing the block valve on the valve-controlled pipeline at the outlet, closing the block valve at the cock position of the pressure gauge, and closing the block valve on the valve-controlled pipeline at the inlet; step four: and separating the first quick plug connector and the second quick plug connector, and recovering the arrangement of the safety helmet to finish sampling.

According to the rapid sampling method for the gas pipeline, the sampling opening is added on the gas pipeline through very simple operation, a convenient-to-use transfer interface is provided for gas pipeline sampling, the sampling process is convenient to carry out rapidly, meanwhile, the gas pipeline only needs to be connected and detached through the quick plug connector I and the quick plug connector II during sampling, the operation process is simple and rapid, secondary pollution to the gas sample during sampling is avoided, the stability and accuracy of the obtained gas sample are guaranteed, the sampling method is simple, the time consumption is small, and the sampling accuracy is high.

As a preferable scheme of the invention, the first step is also provided with a preposing step before: separating the upper tank body from the lower tank body, installing the inner tank containing the solvent bag into the upper tank body, crushing the solvent bag by the coil pipe, and then restoring the connection of the upper tank body and the lower tank body. So that the solvent bag can be selectively arranged according to the actual situation to realize the comparison of the sampling results.

In summary, due to the adoption of the technical scheme, the quick sampling device for the gas pipeline has the beneficial effects that:

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 change of the existing gas pipeline is small, and the safety risk generated in the improvement process is avoided;

2. the quick connection of the first quick connection plug and the second quick connection plug is adopted, 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 without cutting off the flow only by controlling the valve at the cock and the valve on the valve control pipeline, the sampling operation is simple, convenient and quick, and the current situations of empty bottles and too small gas amount in the sampling process are 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.

The quick sampling method for the gas pipeline has the beneficial effects that:

1. the sampling opening is added on the gas pipeline through extremely simple operation, so that a convenient-to-use transfer interface is provided for gas pipeline sampling, and the sampling process is convenient to carry out quickly;

2. only need through the connection and the split of quick connector one and quick connector two during the sample, operation process is simple swift, and has avoided the sampling process to the secondary pollution of gas appearance, has guaranteed the stability and the accuracy of acquireing the gas appearance.

Drawings

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

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

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

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

Fig. 5 is a schematic diagram of an embodiment of a gas pipeline rapid sampling device according to 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 below with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not 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 all includes adapter component 31 and sets up block valve 32 on the adapter component 31, can realize the on-off control of valve control pipeline 3 through the on-off state of control block valve 32, quick connector one 4 and quick connector two 6 are the quick connector that can carry out the plug-in connection, can realize quick connection and separation between sampling device and pipeline 10, be equipped with conventional threaded connection's safety cap on quick connector one 4 and the quick connector two 6, moreover, the steam generator is simple in structure, the sampling operation is simple, convenient and fast, only need to control the cock department valve, valve on the valve control pipeline 3, can realize accomplishing the sample under the condition of not cutting off the flow, the very big sampling process required time that has reduced, and in the sampling process, entry 11 and export 12 all are in the on-state, make the air current situation that this sampling device samples for the air current situation of gas bomb 1 of flowing through, the sampling process that empty bottle and gas volume are too little has appeared to the greatest extent reduced, and avoided causing secondary pollution to the gas appearance, according to statistics, sampling time after the improvement shortens sampling time to 4min, the current situation 100% of success rate, the qualification rate 100%.

Specifically, this embodiment is before the sample, reform transform pipeline 10, increase between the manometer 20 of pipeline 10 and manometer cock 5 and set up sample tee bend 2, set up two 6 quick connector on sample tee bend 2, sample tee bend 2's top and manometer 20 threaded connection, bottom and manometer cock 5 threaded connection, the lateral wall sets up interface and two 6 threaded connection of quick connector, change to current gas pipeline 10 is less, avoid improving the process and produce the safety risk, and because the sampling process does not need dismouting manometer 20, the factor that causes secondary interference to the gas appearance has been reduced, overcome the sampling process and appeared impurity too much, the unusual current situation of component, during the sample, open shut-off valve 32 on entry 11 and the export 12, make entry 11 and export 12 all be in the on-state, form mobile air current in gas cylinder 1, when needing to end the sample, close export 12 department shut-off valve 32, close entry 11 department shut-off valve again, make the gas cylinder 1 can be fast fill the meeting the measuring requirement, when needing to derive the gas appearance again, it is difficult to set up one 4 gas outlet department and carry out the detection device to detect the pollution to the gas cylinder more to the plug-up the plug-in the gas detection device that the detection appearance that the gas appearance appears fast, and detect the gas cylinder pollution more, make the gas cylinder.

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 the present embodiment each include a housing capable of achieving quick connection in an external structure, a flow passage through which air flows is disposed in the housing, a check valve element 41 is disposed in the housing, the flow passage adjusts an inner diameter according to a setting position of the check valve element 41, a spring 43 is disposed in the check valve element 41, the first quick connector 4 and the second quick connector 6 are opposite in installation direction and are arranged oppositely, a sliding member 42 is slidably disposed in the first quick connector 4, 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 element 41 to be attached to and sealed with the housing, and one end of the sliding member 42 is pushed to move out of the housing, the spring 43 in the second quick connector 6 pushes the valve element 41 to be attached to and sealed with the housing, when the first quick connector 4 is connected to the second quick connector 6, the sliding member 42 pushes the two check valve elements 41 to move, so that the first quick connector 4 is communicated with the flow passage in the second quick connector 6, thereby achieving communication between the gas storage bottle 1 and the gas pipeline 10.

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.

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.

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, the mobile route of extension gas in gas bomb 1, 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 and reachs 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 to be connected with the guide cylinder 16 that sets up top in last jar body 13, 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 installation inner tank 8 of actual conditions selectivity, and sealing washer 15 is the annular rubber circle of embedding setting jar body 14 inboard bottom down, can be with the annular body 82 butt in-process production deformation, realize 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 in-process, 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 behind the saturated salt solution, and the opening output that cuts from the cutter gets into inner tank 8, again from the clearance output between the inner tank and the outer jar.

Example 5

The utility model provides a gas pipeline rapid sampling method, adopts the sampling device as shown in fig. 1-5 to before taking a sample for the first time, install sample tee bend 2 between pressure gauge 20 and pressure gauge cock 5 of pipeline 10, install quick connector two 6 on sample tee bend 2 be provided with the safety helmet on quick connector two 6, specifically include the 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 control pipelines 3 on the gas storage bottle 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.

The quick sampling method for the gas pipeline of the embodiment increases the sampling opening through very simple operation on the gas pipeline 10, provides a special interface convenient to use for the gas pipeline 10 sampling, makes things convenient for the quick going on of sampling process, and simultaneously, only needs the connection and the split through the quick connector one 4 and the quick connector two 6 during sampling, and the operation process is simple and quick, and has avoided the secondary pollution of sampling process to the gas appearance, has guaranteed the stability and the accuracy of getting the gas appearance.

Preferably, the first step is preceded by a preceding step: 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.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

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 gas pipeline rapid sampling device according to claim 7, characterized in that an annular body (82) is arranged at the bottom of the outer side of the inner tank (8), an air guide hole (83) is arranged on the annular body (82), a sealing ring (15) is arranged at the bottom of the inner side of the lower tank body (14), and the annular body (82) is in butt fit with the sealing ring (15).

9. A quick sampling method for a gas pipeline is characterized in that the sampling device according to claims 1-8 is adopted, and the sampling method specifically comprises the following steps:

the method comprises the following steps: after checking and confirming that the block valves (32) of the two valve control pipelines (3) on the gas storage bottle (1) are both in a closed state, taking down the safety cap on the quick plug connector I (6) on the gas storage bottle (1), taking down the safety cap on the quick plug connector II (6) on the sampling tee joint (2), and carrying out plug connection on the quick plug connector I (4) and the quick plug connector II (6);

step two: opening a cut-off valve (32) on the valve-controlled pipeline (3) at the outlet (12), then opening the cut-off valve (32) on the valve-controlled pipeline (3) at the inlet (11), and then opening the cut-off valve (32) at the cock (5) of the pressure gauge, so that the natural gas enters the gas storage cylinder (1) and is synchronously timed;

step three: after timing is finished, closing the block valve (32) on the valve-controlled pipeline (3) at the outlet (12), closing the block valve (32) at the cock (5) of the pressure gauge, and closing the block valve (32) on the valve-controlled pipeline (3) at the inlet (11);

step four: and separating the first quick plug connector (4) from the second quick plug connector (6), and recovering the arrangement of the safety helmet to finish sampling.

10. The gas pipeline rapid sampling method as claimed in claim 9, wherein a pre-step is further provided before the first step: separating the upper tank body (13) and the lower tank body (14), installing the inner tank (8) containing the solvent bag (9) into the upper tank body (13), and then restoring the connection of the upper tank body (13) and the lower tank body (14).

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