Natural gas detection sampling device

Abstract

The utility model discloses a natural gas detection sampling device which comprises a gas inlet pipe, a sampling tank and a gas outlet pipe, the gas inlet pipe is fixed on the left side of the sampling tank, the gas outlet pipe is fixed on the right side of the sampling tank, control valves are arranged on the gas inlet pipe and the gas outlet pipe, and a fixing seat is fixed on the left side of the gas inlet pipe. A limiting ring is fixed to the inner side of the fixing base, an inner gear is slidably connected to the inner side of the fixing base, a gear is rotationally connected to the portion, on the inner side of the inner gear, of the fixing base, the gear is meshed with the inner gear through gear teeth, the gear is located on the outer side of the fixing base, and a rack is slidably connected to the end face of the fixing base. The gear is meshed with a rack through gear teeth, the rack is located on the upper side of the inner gear, a fixing plate is fixed to the side face of the rack, and a pressure gauge is installed on the side face of the gas outlet pipe, so that sampling convenience is guaranteed, meanwhile, personnel operation is facilitated, and the situation of natural gas leakage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas detection equipment, in particular to a natural gas detection sampling device. Background Art

[0002] Natural gas refers to all gases that exist naturally in nature, including gases formed by various natural processes in the atmosphere, hydrosphere, and lithosphere, including oilfield gas, gas field gas, mud volcano gas, coalbed methane and biogenic gas, etc. The definition of "natural gas" that people have long used is a narrow definition from an energy perspective, which refers to a mixture of hydrocarbons and non-hydrocarbon gases naturally stored in strata. In petroleum geology, it usually refers to oilfield gas and gas field gas. Natural gas needs to be tested before it is used.

[0003] The patent with application number CN216207894U discloses a sampling device for natural gas detection, including a control valve, a bottom plate and an air bag, a box body is fixedly installed on the top of the bottom plate, buffer plates are fixedly installed at both ends of the box body through spring seats, a pipeline is fixedly installed on the surface of one side of the box body, a control valve is fixedly installed on the periphery of the pipeline, a fixing ring is fixedly installed on the periphery of the pipeline on one side of the control valve, a support frame is fixedly installed at both ends of the fixing ring, a clamping ring is movably installed at both ends of the support frame through a limit bolt, and an air bag is fixedly installed inside the box body on the other side of the pipeline. The utility model is provided with a series of structures so that the device can clamp the external structure through the clamping ring during use, so as to avoid the pipeline falling off during the sampling process, thereby facilitating the user to sample natural gas, and the spring seat and the buffer plate can alleviate the external impact force on the box body, thereby improving the stability of the device.

[0004] Although the above technology realizes the sampling of natural gas through structures such as the box door, box body, pipeline, fixed plate, bottom plate, sleeve rod, wheel, air bag, etc., its structure is numerous, which not only increases the complexity of the equipment, but also although the equipment has wheels for movement, it is easily affected by the environment and cannot facilitate the movement of the wheels, resulting in the need for personnel to carry it, which is inconvenient to carry and not convenient. At the same time, the pipeline is fixed by a retaining ring and a limit bolt, but due to the limit bolts on both sides, the personnel need to ensure synchronization when turning, otherwise it is difficult to align the pipeline, which leads to easy leakage during sampling. Therefore, a natural gas detection sampling device is proposed based on this technology. Utility Model Content

[0005] The purpose of the utility model is to provide a natural gas detection sampling device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a natural gas detection sampling device, comprising an air inlet pipe, a sampling tank and an air outlet pipe, the air inlet pipe is fixed to the left side of the sampling tank, the air outlet pipe is fixed to the right side of the sampling tank, control valves are arranged on the air inlet pipe and the air outlet pipe, a fixed seat is fixed to the left side of the air inlet pipe, a limiting ring is fixed on the inner side of the fixed seat, an internal gear is slidably connected to the inner side of the fixed seat, a gear is rotatably connected to the fixed seat on the inner side of the internal gear, the gear is meshed with the gear through gear teeth, the gear is located on the outer side of the fixed seat, a rack is slidably connected to the end face of the fixed seat, the gear is meshed with the rack through gear teeth, the rack is located on the upper side of the internal gear, a fixing plate is fixed to the side of the rack, and a pressure gauge is installed on the side of the air outlet pipe.

[0007] As a further preferred embodiment of the present technical solution, a through hole is provided on the fixing seat on the inner side of the limiting ring, the fixing seat is connected with the air intake pipe through the through hole, and the aperture of the through hole is the same as the inner diameter of the air intake pipe.

[0008] As a further preferred embodiment of the present technical solution, the end face of the fixed seat is annular and has seven groups of notched grooves equidistantly provided thereon, and seven groups of gears, racks and fixed plates are correspondingly provided thereon, and the seven groups of racks are correspondingly slidably connected to the inner sides of the seven groups of notched grooves.

[0009] As a further preferred embodiment of the present technical solution, the inner side of the fixing plate is arranged in an arc shape, and the inner adjacent ends of the seven groups of fixing plates form a circular shape.

[0010] As a further preferred embodiment of the technical solution, a T-shaped slide groove is provided on the fixing seat on the inner side of the notch groove, a T-shaped slider is fixed on the inner side of the rack, and the T-shaped slider is slidably connected in the T-shaped slide groove.

[0011] As a further preferred embodiment of the present technical solution, a handle is fixed on the upper side of the sampling tank, and the sampling tank is made of stainless steel.

[0012] As a further preferred embodiment of the present technical solution, an annular groove is provided on the inner side of the fixed seat, a retaining ring is fixed on the side of the internal gear, the retaining ring is slidably connected in the annular groove, a strip groove is provided on one side of the fixed seat, a push rod is movably connected in the strip groove, one end of the push rod extends to the outside of the fixed seat, and the other end of the push rod is fixedly connected to the side of the internal gear.

[0013] The utility model provides a natural gas detection sampling device, which has the following beneficial effects:

[0014] (1) The utility model uses a sampling tank made of stainless steel to ensure safety when carrying. Through the control valves on both sides of the air inlet pipe and the air outlet pipe, the natural gas pipeline can be connected when sampling, and then the control valve is opened to allow natural gas to enter. After the natural gas discharges the air in the sampling tank, the control valve on the air outlet pipe is closed, and then the natural gas is sampled and stored in the sampling tank. At the same time, according to the pressure gauge, safe sampling can be achieved according to the pressure in the sampling tank, and then the control valve on the air inlet pipe can be closed. The sampling tank can be conveniently carried through the handle.

[0015] (2) The utility model uses the internal gear, gear, rack, fixed plate and push rod on the inner side of the fixed seat. When the push rod is used to push the internal gear to rotate in the fixed seat, the gear can be driven to rotate. When the gear rotates, the rack can be pushed to move along the fixed seat, thereby driving the fixed plate to move, so that the fixed plate moves synchronously until it contacts and is fixed with the natural gas pipeline, thereby achieving connection. The push rod can be used to drive the fixed plate to move synchronously, so that the natural gas pipeline can be centered and connected, thereby avoiding natural gas leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the fixing seat of the utility model;

[0018] Figure 3 It is a schematic diagram of the structure of the rack and T-shaped slider of the utility model;

[0019] Figure 4 It is a schematic cross-sectional structure diagram of the fixing seat, the annular groove and the internal gear of the utility model;

[0020] In the figure: 1. fixing plate; 2. fixing seat; 3. control valve; 4. air inlet pipe; 5. handle; 6. sampling tank; 7. pressure gauge; 8. air outlet pipe; 9. push rod; 10. strip groove; 11. rack; 12. limit ring; 13. internal gear; 14. gear; 15. through hole; 16. notch groove; 17. T-type slider; 18. annular groove; 19. retaining ring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] The utility model provides a technical solution: Figure 1-Figure 4As shown, in this embodiment, a natural gas detection sampling device includes an inlet pipe 4, a sampling tank 6 and an outlet pipe 8. The inlet pipe 4 is fixed to the left side of the sampling tank 6, and the outlet pipe 8 is fixed to the right side of the sampling tank 6. A control valve 3 is arranged on the inlet pipe 4 and the outlet pipe 8. A fixed seat 2 is fixed to the left side of the inlet pipe 4. A limit ring 12 is fixed inside the fixed seat 2. An internal gear 13 is slidably connected to the inside of the fixed seat 2. A gear 14 is rotatably connected to the fixed seat 2 inside the internal gear 13. The gear 14 is rotatably connected to the fixed seat 2 inside the internal gear 13. 4 meshes with the inner gear 13 through the gear teeth, the gear 14 is located outside the fixed seat 2, the end surface of the fixed seat 2 is slidably connected with the rack 11, the gear 14 meshes with the rack 11 through the gear teeth, the rack 11 is located on the upper side of the inner gear 13, the side of the rack 11 is fixed with the fixing plate 1, the side of the air outlet pipe 8 is installed with the pressure gauge 7, the fixing seat 2 on the inner side of the limiting ring 12 is provided with a through hole 15, the fixing seat 2 is connected with the air inlet pipe 4 through the through hole 15, and the aperture of the through hole 15 is the same as the inner diameter of the air inlet pipe 4.

[0023] like Figure 2 , Figure 3 and Figure 4 As shown, the end face of the fixed seat 2 is annular and has seven groups of notched grooves 16 equidistantly provided thereon. The gear 14, the rack 11 and the fixed plate 1 are each provided with seven groups of corresponding gears. The seven groups of racks 11 are correspondingly slidably connected to the inner sides of the seven groups of notched grooves 16. The inner side of the fixed plate 1 is arranged in an arc shape, and the adjacent ends of the inner sides of the seven groups of fixed plates 1 form a circular shape, which can fit with the natural gas pipeline to fix it. A T-shaped groove is provided on the fixed seat 2 on the inner side of the notched groove 16, and a T-shaped slider 17 is fixed on the inner side of the rack 11. The T-shaped slider 17 is slidably connected in the T-shaped groove. The rack 11 can be limited by the T-shaped groove and the T-shaped slider 17 to prevent it from slipping out of the notched groove 16.

[0024] like Figure 1 and Figure 4 As shown, a handle 5 is fixed on the upper side of the sampling tank 6, which is convenient for taking the sampling tank 6. The sampling tank 6 is made of stainless steel to improve the overall safety of the equipment. An annular groove 18 is provided on the inner side of the fixing seat 2, and a snap ring 19 is fixed on the side of the internal gear 13. The snap ring 19 is slidably connected in the annular groove 18, which is convenient for limiting the internal gear 13 and ensuring its normal rotation. A strip groove 10 is provided on one side of the fixing seat 2, and a push rod 9 is movably connected in the strip groove 10. One end of the push rod 9 extends to the outside of the fixing seat 2, and the other end of the push rod 9 is fixedly connected to the side of the internal gear 13. Through the push rod 9, the internal gear 13 can be pushed conveniently.

[0025] The utility model provides a natural gas detection sampling device, and the specific working principle is as follows: during normal use, the inner side of the fixing seat 2 is fitted with the natural gas pipeline, and then the push rod 9 is pushed to move in the strip groove 10, and when the internal gear 13 is pushed to rotate in the fixing seat 2, the gear 14 can be driven to rotate, and then when the gear 14 rotates, the rack 11 can be pushed to move along the fixing seat 2, and then the fixing plate 1 is driven to move, so that the fixing plate 1 moves synchronously until it contacts and is fixed with the natural gas pipeline, thereby achieving connection, and the fixing plate 1 can be driven to move synchronously by pushing the push rod 9, so that the natural gas pipeline can be centered and connected, thereby avoiding natural gas leakage. During sampling, the control valve 3 is opened to allow natural gas to enter. After the natural gas discharges the air in the sampling tank 6, the control valve 3 on the side of the outlet pipe 8 is closed, and then the natural gas is sampled and stored in the sampling tank 6. At the same time, according to the pressure gauge 7, safe sampling can be achieved according to the pressure in the sampling tank 6, and then the control valve 3 on the inlet pipe 4 can be closed.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A natural gas detection sampling device, comprising an air inlet pipe (4), a sampling tank (6) and an air outlet pipe (8), characterized in that: The air inlet pipe (4) is fixed to the left side of the sampling tank (6), and the air outlet pipe (8) is fixed to the right side of the sampling tank (6). The air inlet pipe (4) and the air outlet pipe (8) are both provided with a control valve (3). A fixed seat (2) is fixed to the left side of the air inlet pipe (4), a limit ring (12) is fixed inside the fixed seat (2), an internal gear (13) is slidably connected inside the fixed seat (2), and a rotationally connected gear (13) is provided on the fixed seat (2) inside the internal gear (13). A gear (14) is provided, the gear (14) meshing with the internal gear (13) through gear teeth, the gear (14) is located outside the fixed seat (2), the end surface of the fixed seat (2) is slidably connected with a rack (11), the gear (14) meshing with the rack (11) through gear teeth, the rack (11) is located on the upper side of the internal gear (13), a fixing plate (1) is fixed to the side of the rack (11), and a pressure gauge (7) is installed on the side of the outlet pipe (8).

2. A natural gas detection sampling device according to claim 1, characterized in that: A through hole (15) is provided on the fixing seat (2) on the inner side of the limiting ring (12); the fixing seat (2) is connected to the air intake pipe (4) through the through hole (15); and the diameter of the through hole (15) is the same as the inner diameter of the air intake pipe (4).

3. A natural gas detection sampling device according to claim 1, characterized in that: The end surface of the fixing seat (2) is annular and is provided with seven groups of notched grooves (16) at equal intervals. The gear (14), rack (11) and fixing plate (1) are each provided with seven groups correspondingly. The seven groups of racks (11) are correspondingly slidably connected to the inner sides of the seven groups of notched grooves (16).

4. A natural gas detection sampling device according to claim 3, characterized in that: The inner side of the fixing plate (1) is arranged in an arc shape, and the inner adjacent ends of the seven groups of fixing plates (1) form a circular shape.

5. A natural gas detection sampling device according to claim 3, characterized in that: A T-shaped slide groove is provided on the fixing seat (2) inside the notch groove (16), a T-shaped slide block (17) is fixed inside the rack (11), and the T-shaped slide block (17) is slidably connected in the T-shaped slide groove.

6. A natural gas detection sampling device according to claim 1, characterized in that: A handle (5) is fixed on the upper side of the sampling tank (6), and the sampling tank (6) is made of stainless steel.

7. A natural gas detection sampling device according to claim 1, characterized in that: An annular groove (18) is provided on the inner side of the fixed seat (2), a snap ring (19) is fixed on the side of the internal gear (13), and the snap ring (19) is slidably connected in the annular groove (18). A strip groove (10) is provided on one side of the fixed seat (2), and a push rod (9) is movably connected in the strip groove (10), one end of the push rod (9) extends to the outside of the fixed seat (2), and the other end of the push rod (9) is fixedly connected to the side of the internal gear (13).

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