A gas sampling pipe joint with drainage and gas washing functions

Abstract

A gas sampling pipe connector with drainage and gas washing functions belongs to the technical field of gas sampling and testing equipment and is used for high-quality gas sampling. The technical solution is as follows: the upper end of the drainage valve body is connected to the sampling pipe ball valve; one end of the valve core is connected to the valve core mounting hole on the side wall of the drainage valve body; the other end of the valve core is connected to the sampling connector through the valve core ball valve; the front end of the sampling connector is connected to the opening of the gas collection bag; a float ball is located above the drainage port at the lower end of the drainage valve body; the valve core contains two parallel gas collection bag inlet channels and a gas collection bag exhaust channel arranged vertically along its length; sealing balls and compression springs are arranged sequentially in opposite directions within the two gas channels. This utility model has a simple structure and is easy to use, realizing integrated operation of drainage, gas washing, and collection. The operation process is simple and convenient, shortening operation time, improving work efficiency, reducing the workload of operators, and eliminating the safety hazards of gas leakage.

Description

Technical Field

[0001] This utility model relates to a gas sampling pipe connector for collecting coal gas with drainage and gas washing functions, belonging to the technical field of coal gas sampling and testing equipment. Background Technology

[0002] When taking gas samples, the valve on the gas sampling pipe must be opened. At this time, the condensate in the sampling pipe must be drained before connecting the sampling collection belt to the sampling port. Since residual gas usually remains in the sampling collection belt, failure to drain it will affect the gas test results. Currently, gas sampling requires filling the gas sampling bag with gas, then closing the sampling valve, disconnecting it from the sampling pipe interface, venting the gas, and reconnecting it before sampling. This process increases the workload of employees, and frequent operations pose safety hazards, making improvement essential. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a gas sampling pipe connector with drainage and gas washing functions. This sampling pipe connector can connect the sampling gas collection bag to the sampling connector. By opening the sampling pipe valve, drainage, gas washing and collection can be integrated into one operation.

[0004] The technical solution to the above technical problem is:

[0005] A gas sampling pipe connector with drainage and gas washing functions includes a drainage valve body, a valve core, a valve core ball valve, and a sampling connector. The upper end of the drainage valve body is connected to the exhaust port of the sampling pipe ball valve at the lower end of the gas sampling pipe. The side wall of the drainage valve body has a valve core mounting hole. One end of the valve core is connected to the valve core mounting hole on the side wall of the drainage valve body, and the other end of the valve core is connected to the rear end of the sampling connector through the valve core ball valve. The front end of the sampling connector is connected to the opening of the gas collecting bag. The lower end of the drainage valve body has a drainage port, and there is a float ball inside the drainage port. The float ball is pressed against the drainage port and is detachably connected to the drainage port. The valve core has two gas collecting bag inlet channels and a gas collecting bag exhaust channel arranged vertically and horizontally along the length direction. Sealing balls and compression springs are arranged sequentially in the two gas channels, and the arrangement directions of the sealing balls and compression springs in the two gas channels are opposite.

[0006] The gas sampling pipe joint with drainage and gas washing functions mentioned above has a filter screen and a sealing gasket installed at the upper end of the drain valve body, and the sealing gasket is interference fit with the drain valve body.

[0007] The aforementioned gas sampling pipe connector with drainage and gas washing functions has a cylindrical body at the rear and a sampling pipe at the front. The cylindrical body and the sampling pipe are connected by a tapered shape. The cylindrical body at the rear of the sampling connector is connected to the gas outlet end of the valve core ball valve, and the sampling pipe at the front of the sampling connector is inserted into the opening of the gas collection bag.

[0008] The aforementioned gas sampling pipe connector with drainage and gas washing functions has a sliding hole at the upper part of the drain outlet at the lower end of the drain valve body. The upper end of the sliding hole is a conical opening, and the arc of the conical opening matches the lower part of the float. The lower part of the float is placed in the conical opening. There is a disc-shaped groove below the sliding hole. A float rod is connected to the lower end of the float. The diameter of the float rod matches the diameter of the sliding hole. The length of the float rod is greater than the length of the sliding hole. The float rod is inserted into the sliding hole, and the float rod and the sliding hole are in a sliding fit. A disc is fixedly connected to the lower end of the float rod. The disc is embedded in the disc-shaped groove at the lower end of the drain outlet. Two bosses are fixed on both sides of the disc. The two bosses are located in the disc-shaped groove at the lower part of the drain outlet.

[0009] The aforementioned gas sampling pipe connector with drainage and gas washing functions has a cylindrical valve core. One end of the two gas channels inside the valve core is a large-diameter end, and the other end has a small-diameter vent pipe. The large-diameter end of the gas collection bag inlet channel of the valve core and the vent pipe are respectively connected to the valve core ball valve and the drainage valve body. The large-diameter end of the gas collection bag exhaust channel of the valve core and the vent pipe are respectively connected to the drainage valve body and the valve core ball valve.

[0010] In the aforementioned gas sampling pipe connector with drainage and gas washing functions, the sealing ball in the gas collection bag inlet channel of the valve core is located inside the small-diameter vent pipe. The sealing ball is opposite to the drain valve body through the vent pipe. The compression spring is located at the rear of the sealing ball. There is an inlet spring seat at the rear of the compression spring in the gas collection bag inlet channel. There is an inlet hole at the center of the inlet spring seat. The inlet hole at the rear end of the inlet spring seat is opposite to the inlet of the valve core ball valve.

[0011] The aforementioned gas sampling pipe connector with drainage and gas washing functions has a sealing ball in the exhaust channel of the gas collection bag of the valve core located inside the small-diameter vent pipe. The sealing ball is opposite to the air inlet of the valve core ball valve through the vent pipe. The compression spring is located at the rear of the sealing ball. There is an exhaust spring seat at the rear of the compression spring in the exhaust channel of the gas collection bag. The exhaust spring seat is cylindrical. The rear end of the exhaust spring seat is opposite to the drain valve body. There is an exhaust hole on the side wall of the exhaust channel of the gas collection bag.

[0012] The aforementioned gas sampling pipe connector with drainage and gas washing functions has a ball handle at the rear of the sealing ball. The ball handle is a round rod and is inserted into the front opening of the compression spring.

[0013] The beneficial effects of this utility model are:

[0014] The lower end of the drain valve body of this utility model has a drain outlet. After the condensate in the main gas pipe enters the gas sampling connector, it can be discharged from the drain outlet. The float ball is pressed against the drain outlet, and the condensate can float the float ball to make the water flow out. At the same time, the float ball can block the drain outlet after drainage to prevent gas leakage into the gas sampling pipe. The valve core is connected to one side of the drain valve body. Gas can be pushed open by the vent pipe of the gas collection bag inlet channel, and then enter the gas collection bag through the inlet hole of the inlet spring seat. Gas in the gas collection bag can be pushed open by the vent pipe of the gas collection bag exhaust channel, and then discharged through the exhaust hole on the side wall of the gas collection bag exhaust channel.

[0015] This utility model has a simple structure and is easy to use. The drain port at the lower end of the drain valve body can discharge the condensate entering the gas sampling connector. The valve core can introduce the gas into the gas collection bag, and at the same time, it can discharge the gas in the gas collection bag from the side wall of the valve core, realizing the gas washing function. The operation process is simple and convenient, shortens the operation time, improves work efficiency, reduces the workload of operators, and eliminates the safety hazards of gas leakage. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the drain valve body;

[0018] Figure 3 These are the front and top views of the float and float rod;

[0019] Figure 4 These are sectional and side views of the valve core;

[0020] Figure 5 This is a cross-sectional view of the sampling connector;

[0021] Figure 6 This is a schematic diagram of the structure of the sealed sphere;

[0022] Figure 7 This is a schematic diagram of the compression spring.

[0023] Figure 8 These are sectional and side views of the intake spring housing;

[0024] Figure 9 These are sectional and side views of the exhaust spring seat.

[0025] The following are the markings in the diagram: 1. Gas sampling pipe; 2. Sampling pipe ball valve; 3. Gas collection bag; 4. Drain valve body; 5. Valve core; 6. Valve core ball valve; 7. Sampling connector; 8. Valve core mounting hole; 9. Drain outlet; 10. Float ball; 11. Gas collection bag inlet channel; 12. Gas collection bag exhaust channel; 13. Sealing ball; 14. Compression spring; 15. Filter screen; 16. Sealing gasket; 17. Sliding hole; 18. Conical opening; 19. Disc-shaped groove; 20. Float rod; 21. Boss; 22. Large diameter end; 23. Vent pipe; 24. Inlet spring seat; 25. Inlet hole; 26. Exhaust spring seat; 27. Exhaust hole; 28. Ball handle. Detailed Implementation

[0026] This utility model consists of a drain valve body 4, a valve core 5, a valve core ball valve 6, and a sampling connector 7.

[0027] Figure 1 The upper end of the drain valve body 4 is connected to the exhaust port of the sampling tube ball valve 2 at the lower end of the gas sampling tube 1. There is a valve core mounting hole 8 on the side wall of the drain valve body 4. One end of the valve core 5 is connected to the valve core mounting hole 8 on the side wall of the drain valve body 4. The other end of the valve core 5 is connected to the rear end of the sampling connector 7 through the valve core ball valve 6. The front end of the sampling connector 7 is connected to the opening of the gas collection bag 3.

[0028] Figure 1 , 2 The drain valve body 4 is equipped with a filter screen 15 and a sealing gasket 16 at the upper part of the interior. The sealing gasket 16 is interference-fitted with the drain valve body 4. The gas enters the drain valve body 4 through the filter screen 15 to ensure the purity of the sampled gas.

[0029] Figure 1 , 2As shown in Figure 3, the lower end of the drain valve body 4 has a drain port 9, and inside the drain port 9 is a float ball 10, which is pressed against the drain port 9. The upper part of the drain port 9 is a sliding hole 17, and the upper end of the sliding hole 17 is a conical opening 18. The arc of the conical opening 18 matches the lower part of the float ball 10, and the lower part of the float ball 10 is placed in the conical opening 18. Below the sliding hole 17 is a disc-shaped groove 19, and the lower end of the float ball 10 is connected to a float rod 20. The diameter of the float rod 20 matches the diameter of the sliding hole 17, and the length of the float rod 20 is greater than the length of the sliding hole 17. The float rod 20 is inserted into the sliding hole 17, and the float rod 20 and the sliding hole 17 are in a sliding fit. A disc is fixedly connected to the lower end of the float rod 20. The disc is embedded in the disc-shaped groove 19 at the lower end of the drain outlet 9. The disc and the disc-shaped groove are in a sliding fit. Two bosses 21 are fixed on both sides of the disc. The two bosses 21 are located in the disc-shaped groove 19 below the sliding hole 17. When the float 10 floats up due to the buoyancy of the condensate in the drain valve body 4, the float rod 20 plays a role in positioning the float 10 to prevent it from deviating. The disc at the lower end of the float rod 20 has two bosses 21. When the float 10 floats to the highest position, the bosses 21 can ensure the drainage gap in the disc-shaped groove 19, allowing for normal drainage.

[0030] Figure 1 , 5 The display shows that the rear of the sampling connector 7 is a cylindrical body, and the front is a sampling tube. The cylindrical body and the sampling tube are connected by a tapered joint. The rear cylindrical body of the sampling connector 7 is connected to the outlet end of the valve core ball valve 6, and the sampling tube at the front of the sampling connector 7 is inserted into the opening of the gas collecting bag 3. During gas intake, the gas passes through the valve core ball valve 6 and then through the sampling connector 7 into the gas collecting bag 3. During gas exhaust, the gas is also discharged through the sampling connector 7 and the valve core ball valve 6.

[0031] Figure 1 , 4 The valve core 5 is cylindrical. Inside the valve core 5 are two air inlet channels 11 and air outlet channels 12 arranged parallel to each other along the length direction. One end of each of the two gas channels in the valve core 5 is a large diameter end 22, and the other end is a small diameter vent pipe 23. A sealing ball 13 and a compression spring 14 are arranged sequentially in the two gas channels.

[0032] Figure 1 , 4As shown in Figures 6, 7, and 8, the small-diameter vent pipe 23 in the air inlet channel 11 of the air collection bag of valve core 5 is opposite to the drain valve body 4, the large-diameter end 22 of the air inlet channel 11 of the air collection bag is opposite to the valve core ball valve 6, the sealing ball 13 is located at the rear of the small-diameter vent pipe 23, the compression spring 14 is located at the rear of the sealing ball 13, the compression spring 14 of the air collection bag air inlet channel 11 has an air inlet spring seat 24 at the rear, the air inlet spring seat 24 has an air inlet 25 at the center, and the rear air inlet hole 25 of the air inlet spring seat 24 is opposite to the air inlet of the valve core ball valve 4.

[0033] With this structure, the sealing ball 13 and the compression spring 14 in the gas collection bag inlet channel 11 can allow gas with a certain pressure to enter the gas collection bag inlet channel 11 from the drain valve body 4, and then enter the gas collection bag 3; at the same time, the sealing ball 13 and the compression spring 14 can prevent the gas in the gas collection bag 3 from entering the drain valve body 4.

[0034] Figure 1 , 4 As shown in sections 6, 7, and 9, the small-diameter vent pipe 23 in the exhaust channel 12 of the gas collection bag of valve core 5 is opposite to the air inlet of the ball valve 6. The large-diameter end 22 of the exhaust channel 12 is opposite to the drain valve body 4. The sealing ball 13 is located behind the small-diameter vent pipe 23, and the compression spring 14 is located behind the sealing ball 13. An exhaust spring seat 26 is located behind the compression spring 14 of the exhaust channel 12. The rear end of the exhaust spring seat 26 is opposite to the drain valve body 4. The exhaust spring seat 26 is cylindrical and can block the exhaust channel 12 of the gas collection bag during the exhaust process, preventing gas from entering the drain valve body 4 from the gas collection bag 3. There is an exhaust hole 27 on the side wall of the exhaust channel 12 of the gas collection bag, allowing gas to be discharged.

[0035] The function of the gas collection bag exhaust channel 12 is opposite to that of the gas collection bag inlet channel 11. The sealing ball 13 and the compression spring 14 in the gas collection bag exhaust channel 12 allow the gas for gas washing operation to enter the gas collection bag exhaust channel 12 from the gas collection bag 3 and then be discharged from the exhaust hole 27. At the same time, the sealing ball 13 and the compression spring 14 prevent the gas in the drain valve body 4 from entering the gas collection bag 3.

[0036] Figure 6 As shown, the sealing ball 13 has a ball handle 28 at the rear. The ball handle 28 is a round rod. The ball handle 28 is inserted into the front opening of the compression spring 14, which can ensure that the sealing ball 13 and the compression spring 14 move synchronously and will not detach.

[0037] The usage process of this utility model is as follows:

[0038] First, connect the upper end of the drain valve body 4 to the sampling tube ball valve 2 at the lower end of the gas sampling tube 1. At the same time, connect the valve core 5 connected to the side of the drain valve body 4 to the valve core ball valve 6. Then connect the valve core ball valve 6 to the rear end of the sampling connector 7. Connect the front end of the sampling connector 7 to the opening of the gas collection bag 3.

[0039] Then, the sampling tube ball valve 2 is opened, and the gas enters the drain valve body 4. The gas contains a small amount of solid impurities, which are filtered through the filter screen 4. The gas condensate also enters the drain valve body 4 through the filter screen.

[0040] When the condensate water level in the drain valve body 4 reaches a certain height, the float ball 10 floats up due to the buoyancy of the condensate water. A gap appears between the lower end of the float ball 10 and the drain outlet 9, and the condensate water is discharged from the drain outlet 9, thus realizing the drainage operation.

[0041] When coal gas is continuously fed into the drain valve body 4 for sampling, when the coal gas pressure exceeds the pressure of the compression spring 14 in the gas collection bag inlet channel 11, the coal gas can push open the vent pipe 23 through the sealing ball 13. The coal gas enters the gas collection bag inlet channel 11 through the vent pipe 23, and then enters the valve core ball valve 6 from the large diameter end 22 at the rear of the gas collection bag inlet channel 11. It then enters the gas collection bag 3 through the valve core ball valve 6 and the sampling connector 7.

[0042] When performing the venting operation, the operator squeezes the gas collection bag 3, and the gas can push the sealed ball 13 in the gas collection bag venting channel 12 out of the vent pipe 23 and then enter the gas collection bag venting channel 12. The gas is discharged through the vent hole 27 on the side wall of the gas collection bag venting channel 12.

[0043] By repeatedly performing air intake and exhaust operations, the gas collection bag 3 can be washed. After multiple washes, the original residual gas in the gas collection bag 3 is basically discharged, and the quality of the collected gas is higher, which is beneficial to the accuracy of the test results.

[0044] An embodiment of this utility model is as follows:

[0045] The length of the drain valve body 4 is 250mm, the maximum diameter is 50mm, the inner diameter is 40mm, the diameter of the sliding hole 17 of the drain outlet 9 is 16mm, the length is ~11mm, the diameter of the conical opening 18 is 24 / 16mm, and the diameter of the disc-shaped groove 19 is 40mm and the height is 15mm.

[0046] The valve core 5 has a diameter of 40mm and a length of 70mm;

[0047] The model of the ball valve 6 is medium size 216DN40;

[0048] The cylindrical body of sampling connector 7 has a diameter of 48mm and a length of 30mm, while the sampling tube has a diameter of 10mm and a length of 40mm.

[0049] The diameter of the float 10 is 18mm;

[0050] The air inlet channel 11 and the air outlet channel 12 of the air collection bag have a diameter of 14 mm and a length of 50 mm. The inner diameter of the large diameter end 22 is 14 mm (M16). The diameter of the vent pipe 23 is 8 mm and the length is ~6 mm. The diameter of the exhaust hole 27 is 6 mm.

[0051] The diameter of the sealing sphere 13 is 10 mm;

[0052] The compression spring 14 has a diameter (outer diameter) of 11mm, a wire diameter of 0.5mm, and a length of 50mm.

[0053] The intake spring seat 24 has a diameter of 16mm (M16) and a length of 11mm, and the intake hole 25 has a diameter of 6mm.

[0054] The exhaust spring seat 26 has a diameter of 16mm (M16) and a length of 11mm.

Claims

1. A gas sampling pipe joint with drainage and gas washing functions, characterized in that: It includes a drain valve body (4), a valve core (5), a valve core ball valve (6), and a sampling connector (7). The upper end of the drain valve body (4) is connected to the exhaust port of the sampling pipe ball valve (2) at the lower end of the gas sampling pipe (1). There is a valve core mounting hole (8) on the side wall of the drain valve body (4). One end of the valve core (5) is connected to the valve core mounting hole (8) on the side wall of the drain valve body (4). The other end of the valve core (5) is connected to the rear end of the sampling connector (7) through the valve core ball valve (6). The front end of the sampling connector (7) is connected to the opening of the gas collection bag (3). The lower end of the drain valve body (4) has a drain port (9), and there is a float (10) inside the drain port (9). The float (10) is pressed on the drain port (9). The float (10) and the drain port (9) are detachably connected. There are two air collection bag inlet channels (11) and air collection bag exhaust channels (12) arranged parallel to each other along the length direction in the valve core (5). There are sealing balls (13) and compression springs (14) arranged in sequence in the two gas channels respectively. The sealing balls (13) and compression springs (14) in the two gas channels are arranged in opposite directions.

2. The gas sampling pipe joint with the functions of water drainage and gas washing according to claim 1, characterized in that: The drain valve body (4) is provided with a filter screen (15) and a sealing gasket (16) at the upper end of the interior. The sealing gasket (16) and the drain valve body (4) are interference fit.

3. The gas sampling pipe joint with the functions of water drainage and gas washing according to claim 1, characterized in that: The rear part of the sampling connector (7) is a cylindrical body, and the front part is a sampling tube. The cylindrical body and the sampling tube are connected in a conical shape. The cylindrical body at the rear of the sampling connector (7) is connected to the air outlet of the valve core ball valve (6). The sampling tube at the front of the sampling connector (7) is inserted into the opening of the gas collection bag (3).

4. The gas sampling pipe joint with the functions of water drainage and gas washing according to claim 1, characterized in that: The upper part of the drain outlet (9) at the lower end of the drain valve body (4) is a sliding hole (17), and the upper end of the sliding hole (17) is a conical opening (18). The arc of the conical opening (18) matches the lower part of the float (10). The lower part of the float (10) is placed in the conical opening (18). There is a disc-shaped groove (19) below the sliding hole (17). The lower end of the float (10) is connected to a float rod (20). The diameter of the float rod (20) is the same as the diameter of the sliding hole (17). Matching, the length of the float rod (20) is greater than the length of the sliding hole (17). The float rod (20) is inserted into the sliding hole (17). The float rod (20) and the sliding hole (17) are in sliding fit. A disc is fixedly connected to the lower end of the float rod (20). The disc is embedded in the disc-shaped groove (19) at the lower end of the drain outlet (9). Two bosses (21) are fixed on both sides of the disc. The two bosses (21) are located in the disc-shaped groove (19) at the lower part of the drain outlet (9).

5. The gas sampling pipe joint with the functions of water drainage and gas washing according to claim 1, characterized in that: The valve core (5) is a cylinder. One end of the two gas channels inside the valve core (5) is a large diameter end (22), and the other end is a small diameter vent pipe (23). The large diameter end (22) and vent pipe (23) of the gas collection bag inlet channel (11) of the valve core (5) are connected to the valve core ball valve (6) and the drain valve body (4) respectively. The large diameter end (22) and vent pipe (23) of the gas collection bag exhaust channel (12) of the valve core (5) are connected to the drain valve body (4) and the valve core ball valve (6) respectively.

6. The gas sampling pipe connector with drainage and gas washing functions according to claim 1, characterized in that: The sealing ball (13) in the air inlet channel (11) of the gas collection bag of the valve core (5) is located inside the small diameter vent pipe (23). The sealing ball (13) is opposite to the drain valve body (4) through the vent pipe (23). The compression spring (14) is located at the rear of the sealing ball (13). There is an air inlet spring seat (24) at the rear of the compression spring (14) of the air collection bag air inlet channel (11). There is an air inlet hole (25) at the center of the air inlet spring seat (24). The air inlet hole (25) at the rear end of the air inlet spring seat (24) is opposite to the air inlet of the valve core ball valve (6).

7. The gas sampling pipe joint with the functions of water drainage and gas washing according to claim 1, characterized in that: The sealing ball (13) in the gas collection bag exhaust channel (12) of the valve core (5) is located inside the small diameter vent pipe (23). The sealing ball (13) is opposite to the air inlet of the valve core ball valve (6) through the vent pipe (23). The compression spring (14) is located at the rear of the sealing ball (13). There is an exhaust spring seat (26) at the rear of the compression spring (14) of the gas collection bag exhaust channel (12). The exhaust spring seat (26) is a cylinder. The rear end of the exhaust spring seat (26) is opposite to the drain valve body (4). There is an exhaust hole (27) on the side wall of the gas collection bag exhaust channel (12).

8. The gas sampling pipe joint with the functions of water drainage and gas washing according to claim 1, characterized in that: The rear part of the sealing ball (13) is connected to a ball handle (28), which is a round rod and is inserted into the front opening of the compression spring (14).

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