High-pressure-resistant gas sampling mechanism

Abstract

The invention relates to the technical field of scientific research instruments and equipment, and discloses a high-pressure-resistant gas sampling mechanism which comprises a three-way connector, a pressure gauge fixedly installed at the side end of the three-way connector, an upper ball valve fixedly installed at the top end of the three-way connector, a gas outlet connector fixedly connected to the output end of the upper ball valve, and a sampling bottle assembly installed at the bottom end of the three-way connector. A pipe joint is fixedly mounted at the input end of the sampling bottle component; a lower ball valve is fixedly mounted at one end, far away from the sampling bottle component, of the pipe joint. By using the high-pressure-resistant gas sampling mechanism, the equipment cost can be remarkably reduced, the space of a laboratory is not occupied, the high-pressure-resistant gas sampling mechanism can be directly hung on equipment, and in the gas sampling process, quick sampling and releasing can be realized by opening and closing the ball valves at the two ends of the sampling bottle; and for gas products generated by combustion and explosion experiments, the gas products can be collected in real time and stored in the sampling bottle, so that subsequent analysis is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of scientific research instruments and equipment, and in particular to a high-pressure resistant gas sampling mechanism. Background Art

[0002] When conducting gas science experiments such as combustion and explosion in the laboratory, accurate component analysis is very important because it can help researchers understand the exact mechanism and products of chemical reactions. Common gas science experiments such as combustion and explosion are usually carried out in closed pressure vessels. The gas products after the reaction are diverse and the component ratios are also different. Gas analyzers are usually used for online gas analysis, but the instrument is expensive. At the same time, the laboratory needs to have enough space to place the gas analyzer, which increases the cost and operational complexity.

[0003] Therefore, those skilled in the art provide a high-pressure resistant gas sampling mechanism to solve the problems raised in the above background technology. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a high-pressure gas sampling mechanism, which can significantly reduce equipment costs while not occupying laboratory space and can be directly hung on the equipment. For the gas sampling process, rapid sampling can be achieved by switching the ball valves at both ends of the sampling bottle. For the gas products generated by combustion and explosion experiments, the gas products can be collected in real time and stored in the sampling bottle, which is convenient for subsequent analysis, etc., which solves the problem that a gas analyzer can usually be used for online gas analysis, but the instrument is expensive and the laboratory needs to have enough space to place the gas analyzer, which increases the cost and operation complexity.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned significant reduction in equipment cost while not occupying laboratory space, it can be directly hung on the equipment. For the gas sampling process, rapid sampling can be achieved by switching the ball valves at both ends of the sampling bottle. For the gas products generated by combustion and explosion experiments, the gas products can be collected in real time and stored in the sampling bottle to facilitate subsequent analysis. The present invention provides the following technical solutions: a high-pressure gas sampling mechanism, comprising a three-way joint, a pressure gauge is fixedly installed on the side end of the three-way joint, an upper ball valve is fixedly installed on the top end of the three-way joint, the output end of the upper ball valve is fixedly connected to the air outlet joint, a sampling bottle assembly is installed on the bottom end of the three-way joint, a pipe joint is fixedly installed on the input end of the sampling bottle assembly, a lower ball valve is fixedly installed on the end of the pipe joint away from the sampling bottle assembly, the input end of the lower ball valve is fixedly connected to the air inlet joint, and the outer surfaces of the upper ball valve and the lower ball valve are both installed with fixed components.

[0008] Preferably, the sampling bottle assembly includes an outer bottle fixedly connected between the three-way joint and the pipe joint, a gas storage bottle is fixedly connected to the interior of the outer bottle, a sealing cavity and an air outlet are provided inside the outer bottle, a sealing ring is sealingly and slidably connected to the interior of the sealing cavity, a spring is movably installed on the upper surface of the sealing ring inside the sealing cavity, air vents are equidistantly provided on the surface of the outer bottle, and a positioning assembly is installed inside the sealing cavity.

[0009] Preferably, the positioning assembly includes annular grooves equidistantly arranged inside the sealing ring, the inner wall of the sealing cavity is fixedly connected to a fixing rod, a clamping assembly is installed at the bottom of the fixing rod, a limiting rod is fixedly connected to the top of the fixing rod, a sliding ring is slidably connected to the outer surface of the limiting rod, and a toggle rod is fixedly connected to the side of the sliding ring.

[0010] Preferably, the clamping assembly includes an insertion rod fixedly connected to the bottom of the fixed rod, a silicone plate is slidably connected to the inside of the insertion rod, a sliding plate is abutted against the side of the silicone plate, a protrusion is fixedly connected to the surface of the sliding plate away from the silicone plate, a connecting rope is fixedly connected to the center of the surface of the sliding plate away from the protrusion, a traction rope is fixedly connected to one end of the connecting rope away from the protrusion, and one end of the traction rope away from the insertion rod is fixedly connected to the bottom of the sliding ring.

[0011] Preferably, the side surface of the protrusion is arc-shaped, and the surface of the protrusion is clamped in the inside of the annular clamping groove.

[0012] Preferably, one end of the toggle rod away from the sliding ring extends to the outer surface of the outer bottle, and the outer surface of the toggle rod is slidably connected to the inside of the outer bottle.

[0013] Preferably, sealing rings are fixedly mounted on the outer surface and inner wall of the sealing ring, and the interior of the sealing cavity is connected to the interior of the gas storage bottle through the sealing ring.

[0014] Preferably, under normal conditions, the elasticity of the silicone plate causes the protrusion to slide in a direction away from the silicone plate.

[0015] Preferably, the inner top of the sealed cavity is connected to the outside of the outer bottle through a vent hole, the outer surfaces of the connecting rope and the traction rope are slidably connected to the inside of the plug, and fixed pulleys are equidistantly fixedly installed inside the plug, and the surfaces of the fixed pulleys rest against the surfaces of the connecting rope and the traction rope.

[0016] Preferably, the fixing assembly includes a clamping plate fixedly connected to the surfaces of the upper ball valve and the lower ball valve, the two side surfaces of the clamping plate are fitted with side plates, the surfaces of the side plates are fixedly connected with positioning plates, and the surfaces of the two side plates are fixedly installed with fixing plates.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the present invention provides a high-pressure resistant gas sampling mechanism, which has the following beneficial effects:

[0019] 1. The high-pressure gas sampling mechanism can be quickly suspended and fixed as a whole during sampling operations by setting an upper ball valve, a lower ball valve and a fixing component, etc., without occupying laboratory space. The sampling operation is simple. The upper ball valve and the lower ball valve at both ends of the sampling bottle assembly are switched to achieve rapid sampling. After sampling, the sampling bottle assembly is directly removed from the fixing component and connected to the gas analysis equipment for analysis. The setting of the pressure gauge can observe the pressure of the sampled gas in real time, so as to facilitate the quantitative sampling of the gas and enhance the accuracy.

[0020] 2. The high-pressure gas sampling mechanism is provided with a sampling bottle assembly. When sampling the gas, the high-pressure gas inside the gas bottle can drive the sealing ring to slide upward and position it. After sampling, the sealing ring can slide in the opposite direction to flush out the residual gas at the bottom of the gas bottle and inside the pipeline and valve body, thereby avoiding the trouble of the residual gas mixing with the next sampling gas to affect the final test result, and also avoiding the disadvantage of the residual gas causing corrosion to the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural schematic diagram of a high-pressure resistant gas sampling mechanism proposed by the present invention;

[0022] Figure 2 This is a schematic diagram of the connection between the upper ball valve and the fixing assembly in a high-pressure gas sampling mechanism proposed by the present invention;

[0023] Figure 3This is a schematic diagram of the structure of a fixed component in a high-pressure resistant gas sampling mechanism proposed by the present invention;

[0024] Figure 4 This is a structural schematic diagram of a sampling bottle assembly in a high-pressure resistant gas sampling mechanism proposed by the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the outer bottle in a high-pressure gas sampling mechanism proposed by the present invention;

[0026] Figure 6 for Figure 4 The enlarged view of point A in the middle;

[0027] Figure 7 This is a structural schematic diagram of a positioning component in a high-pressure resistant gas sampling mechanism proposed by the present invention;

[0028] Figure 8 This is a structural schematic diagram of a clamping assembly in a high-pressure resistant gas sampling mechanism proposed by the present invention.

[0029] In the figure: 1. three-way joint; 2. pressure gauge; 3. upper ball valve; 4. air outlet joint; 5. sampling bottle assembly; 51. outer bottle; 52. gas storage bottle; 53. sealing chamber; 54. air outlet; 55. sealing ring; 56. spring; 57. air vent; 58. positioning assembly; 581. annular groove; 582. clamping assembly; 5821. plug rod; 5822. silicone plate; 5823. sliding plate; 5824. bump; 5825. connecting rope: 5826. traction rope; 583. fixing rod; 584. limiting rod; 585. sliding ring; 586. toggle rod; 6. pipe joint; 7. lower ball valve; 8. air inlet joint; 9. fixing assembly; 91. clamping plate; 92. side plate; 93. positioning plate; 94. fixing plate. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-8A high-pressure gas sampling mechanism comprises a three-way joint 1, a pressure gauge 2 is fixedly installed on the side end of the three-way joint 1, an upper ball valve 3 is fixedly installed on the top of the three-way joint 1, an outlet joint 4 is fixedly connected to the output end of the upper ball valve 3, a sampling bottle assembly 5 is installed on the bottom end of the three-way joint 1, a pipe joint 6 is fixedly installed on the input end of the sampling bottle assembly 5, a lower ball valve 7 is fixedly installed on the end of the pipe joint 6 away from the sampling bottle assembly 5, an inlet joint 8 is fixedly connected to the input end of the lower ball valve 7, and a fixing assembly 9 is installed on the outer surfaces of the upper ball valve 3 and the lower ball valve 7. The fixing assembly 9 comprises a card plate 91 fixedly connected to the surface of the upper ball valve 3 and the lower ball valve 7, and both sides of the card plate 91 The surface is fitted with a side plate 92, and a positioning plate 93 is fixedly connected to the surface of the side plate 92. A fixing plate 94 is fixedly installed on the surfaces of the two side plates 92. By setting the upper ball valve 3, the lower ball valve 7 and the fixing component 9, the whole can be quickly suspended and fixed during sampling operations, without occupying laboratory space. The sampling operation is simple, and the upper ball valve 3 and the lower ball valve 7 at both ends of the sampling bottle component 5 are switched to achieve rapid sampling. After sampling, the sampling bottle component 5 can be directly removed from the fixing component 9 and connected to the gas analysis equipment for analysis. The setting of the pressure gauge 2 can observe the pressure of the sampled gas in real time, so as to facilitate the quantitative sampling of the gas and enhance the accuracy.

[0032] The sampling bottle assembly 5 includes an outer bottle 51 fixedly connected between the three-way joint 1 and the pipe joint 6, a gas storage bottle 52 is fixedly connected to the interior of the outer bottle 51, a sealing cavity 53 and an air outlet 54 are opened inside the outer bottle 51, a sealing ring 55 is sealingly and slidably connected to the interior of the sealing cavity 53, the outer surface and inner wall of the sealing ring 55 are fixedly installed with sealing rings, the interior of the sealing cavity 53 is connected with the interior of the gas storage bottle 52 through the air outlet 54, a spring 56 is movably installed on the upper surface of the sealing ring 55 inside the sealing cavity 53, and ventilation holes 57 are equidistantly opened on the surface of the outer bottle 51, and the inner top of the sealing cavity 53 is connected with the outside of the outer bottle 51 through the ventilation holes 57. Due to the provision of the air outlet 54, when high-pressure gas is injected into the gas storage bottle 52, the sealing ring 55 can be driven to slide upwards, and since the spring 56 is gradually compressed, the longitudinal sliding of the sealing ring 55 can be stored with energy.

[0033] The sealing cavity 53 is provided with a positioning assembly 58, which includes an annular groove 581 which is equidistantly arranged inside the sealing ring 55. A fixing rod 583 is fixedly connected to the inner wall of the sealing cavity 53. A clamping assembly 582 is installed at the bottom of the fixing rod 583. The clamping assembly 582 includes a plug rod 5821 which is fixedly connected to the bottom of the fixing rod 583. A silicone plate 5822 is slidably connected to the inside of the plug rod 5821. A sliding plate 5823 is pressed against the side of the silicone plate 5822. The sliding plate 5823 is away from the silicone plate 58 The surface of the sliding plate 5823 is fixedly connected with a protrusion 5824. Under normal conditions, the elasticity of the silicone plate 5822 causes the protrusion 5824 to slide in a direction away from the silicone plate 5822. The side of the protrusion 5824 is arc-shaped. The surface of the protrusion 5824 is clamped in the inner part of the annular clamping groove 581. A connecting rope 5825 is fixedly connected to the center of the surface of the sliding plate 5823 away from the protrusion 5824. A traction rope 5826 is fixedly connected to one end of the connecting rope 5825 away from the protrusion 5824. The outer ends of the connecting rope 5825 and the traction rope 5826 are fixedly connected. The surfaces are all slidably connected to the inside of the plug rod 5821, and the inside of the plug rod 5821 is fixedly installed with fixed pulleys at equal intervals. The surfaces of the fixed pulleys are against the surfaces of the connecting rope 5825 and the traction rope 5826. The end of the traction rope 5826 away from the plug rod 5821 is fixedly connected to the bottom of the sliding ring 585. The top of the fixed rod 583 is fixedly connected to the limiting rod 584. The outer surface of the limiting rod 584 is slidably connected to the sliding ring 585. The side of the sliding ring 585 is fixedly connected to the toggle rod 586. The toggle rod 586 is away from the sliding ring One end of 585 extends to the outer surface of the outer bottle 51, and the outer surface of the toggle rod 586 is slidably connected to the inside of the outer bottle 51. The high-pressure gas sampling mechanism is equipped with a sampling bottle assembly 5. When sampling gas, the high-pressure gas inside the gas storage bottle 52 can drive the sealing ring 55 to slide upward and position. After sampling, the sealing ring 55 can slide in the opposite direction to flush out the residual gas at the bottom of the gas storage bottle 52 and inside the pipeline and valve body, thereby avoiding the trouble of the residual gas mixing with the next sampling gas and affecting the final detection result.

[0034] To summarize, before use, the side plate 92 and the fixing plate 94 are assembled together by bolts, and the fixing plate 94 is fixed to the equipment. When sampling, the card plate 91 is clamped between the side plate 92 and the positioning plate 93. At this time, the equipment as a whole is fixed, and then the high-pressure air pipe to be sampled is connected to the air inlet joint 8. At this time, the lower ball valve 7 and the upper ball valve 3 are opened to allow the high-pressure gas to enter the sampling bottle assembly 5, and at the same time, the air inside the sampling bottle assembly 5 is pressed out, and then the upper ball valve 3 is closed. At this time, the high-pressure gas is stored in the interior of the plunger sampling bottle assembly 5. At the same time, the internal air pressure is detected by observing the pressure gauge 2. When the internal pressure of the sampling bottle assembly 5 reaches a certain level, the lower ball valve 7 is closed, and after the card plate 91 is separated from the positioning plate 93, the sampling equipment is moved to a fixed position as a whole, and the air outlet joint 4 is connected to the input end of the detection equipment, and then the upper ball valve 3 is opened to allow the gas collected in the sampling bottle assembly 5 to enter the detection equipment for detection. After the detection, the sampling equipment is Separate from the detection equipment, open the upper ball valve 3 and the lower ball valve 7, and let the gas inside the sampling bottle assembly 5 slowly leak out. When sampling the gas, the high-pressure gas inside the gas storage bottle 52 can drive the sealing ring 55 to slide upwards. When sliding to a certain position, the surface of the protrusion 5824 will be stuck on the inner wall of the annular groove 581. At this time, the position of the sealing ring 55 is positioned. After the sampling is completed, by sliding the toggle rod 586 upward, the toggle rod 586 drives the limit rod 584 to slide upward, and by pulling the traction rope 5826 and the connecting rope 5825, the protrusion 5824 is driven to slide inside the plug rod 5821. When the protrusion 5824 is not stuck with the inner wall of the annular groove 581, due to the elasticity of the spring 56, the sealing ring 55 slides downward quickly, which can flush out the residual gas at the bottom of the gas storage bottle 52 and the inside of the pipeline and the valve body, avoiding the trouble of the residual gas mixing with the next sampling gas to affect the final detection result, and also avoiding the disadvantage of the residual gas causing corrosion to the equipment.

[0035] 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 high pressure resistant gas sampling mechanism, comprising a three-way joint (1), characterized in that: A pressure gauge (2) is fixedly mounted on the side end of the three-way joint (1); an upper ball valve (3) is fixedly mounted on the top end of the three-way joint (1); an outlet joint (4) is fixedly connected to the output end of the upper ball valve (3); a sampling bottle assembly (5) is mounted on the bottom end of the three-way joint (1); a pipe joint (6) is fixedly mounted on the input end of the sampling bottle assembly (5); a lower ball valve (7) is fixedly mounted on the end of the pipe joint (6) away from the sampling bottle assembly (5); an inlet joint (8) is fixedly connected to the input end of the lower ball valve (7); and fixing assemblies (9) are mounted on the outer surfaces of the upper ball valve (3) and the lower ball valve (7).

2. A high pressure resistant gas sampling mechanism according to claim 1, characterized in that: The sampling bottle assembly (5) comprises an outer bottle (51) fixedly connected between a three-way joint (1) and the pipe joint (6); a gas storage bottle (52) is fixedly connected to the interior of the outer bottle (51); a sealing cavity (53) and an air outlet (54) are provided inside the outer bottle (51); a sealing ring (55) is sealingly and slidably connected to the interior of the sealing cavity (53); a spring (56) is movably installed on the upper surface of the sealing ring (55) inside the sealing cavity (53); ventilation holes (57) are equidistantly provided on the surface of the outer bottle (51); and a positioning assembly (58) is installed inside the sealing cavity (53).

3. A high pressure resistant gas sampling mechanism according to claim 2, characterized in that: The positioning assembly (58) comprises an annular groove (581) equidistantly arranged inside the sealing ring (55); a fixing rod (583) is fixedly connected to the inner wall of the sealing cavity (53); a clamping assembly (582) is installed at the bottom of the fixing rod (583); a limiting rod (584) is fixedly connected to the top of the fixing rod (583); a sliding ring (585) is slidably connected to the outer surface of the limiting rod (584); and a toggle rod (586) is fixedly connected to the side of the sliding ring (585).

4. A high pressure resistant gas sampling mechanism according to claim 3, characterized in that: The clamping assembly (582) includes an insertion rod (5821) fixedly connected to the bottom of the fixing rod (583), a silicone plate (5822) is slidably connected inside the insertion rod (5821), a sliding plate (5823) is abutted against the side of the silicone plate (5822), a protrusion (5824) is fixedly connected to the surface of the sliding plate (5823) away from the silicone plate (5822), a connecting rope (5825) is fixedly connected to the center of the surface of the sliding plate (5823) away from the protrusion (5824), a traction rope (5826) is fixedly connected to one end of the connecting rope (5825) away from the protrusion (5824), and one end of the traction rope (5826) away from the insertion rod (5821) is fixedly connected to the bottom of the sliding ring (585).

5. A high pressure resistant gas sampling mechanism according to claim 4, characterized in that: The side surface of the protrusion (5824) is arc-shaped, and the surface of the protrusion (5824) is snap-fitted into the interior of the annular slot (581).

6. A high pressure resistant gas sampling mechanism according to claim 3, characterized in that: One end of the toggle rod (586) away from the sliding ring (585) extends to the outer surface of the outer bottle (51), and the outer surface of the toggle rod (586) is slidably connected to the inside of the outer bottle (51).

7. The high pressure resistant gas sampling mechanism according to claim 3, characterized in that: The outer surface and inner wall of the sealing ring (55) are both fixedly mounted with sealing rings, and the interior of the sealing cavity (53) is connected to the interior of the gas storage bottle (52) through the sealing ring (55).

8. The high pressure resistant gas sampling mechanism according to claim 4, characterized in that: Under normal conditions, the elasticity of the silicone plate (5822) causes the protrusion (5824) to slide in a direction away from the silicone plate (5822).

9. The high pressure resistant gas sampling mechanism according to claim 4, characterized in that: The inner top of the sealed cavity (53) is connected to the outside of the outer bottle (51) through a vent hole (57), and the outer surfaces of the connecting rope (5825) and the traction rope (5826) are slidably connected to the inside of the plug rod (5821). Fixed pulleys are equidistantly fixedly installed inside the plug rod (5821), and the surfaces of the fixed pulleys are against the surfaces of the connecting rope (5825) and the traction rope (5826).

10. The high pressure resistant gas sampling mechanism according to claim 1, characterized in that: The fixing assembly (9) comprises a clamping plate (91) fixedly connected to the surface of the upper ball valve (3) and the lower ball valve (7), the two side surfaces of the clamping plate (91) are fitted with side plates (92), the surfaces of the side plates (92) are fixedly connected with positioning plates (93), and the surfaces of the two side plates (92) are fixedly mounted with fixing plates (94).

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