A multi-angle probe mechanism for a gas analysis cabin

Abstract

The present invention relates to the field of sampling probes, and in particular to a multi-angle probe mechanism for a gas analysis cabin, comprising a probe seat, an air inlet joint being arranged on the probe seat, an air supply pipe being arranged on the probe seat, and an air supply joint being arranged at one end of the air supply pipe located in the probe seat, and an air exhaust joint being arranged on the probe seat; a rotatable bracket being arranged in the probe seat, and a first connecting pipe and a second connecting pipe being symmetrically arranged on the bracket, and connecting joints being arranged at the ends of the two connecting pipes, a switch plug structure being arranged in the air inlet joint, the air supply joint, the exhaust joint and the connecting joint, pistons being arranged in the first connecting pipe and the second connecting pipe, and an external control structure being arranged on the first connecting pipe and the second connecting pipe, a through hole being arranged in the middle of the piston, and a spring plug structure being arranged on the piston for the through hole, and a vacuum joint connected to a vacuum pump being arranged on the probe seat; the present invention can achieve the purpose of automatically discharging residual gas from the probe and improving the accuracy of gas analysis.

Description

Technical Field

[0001] The invention relates to the technical field of sampling probes, in particular to a multi-angle probe mechanism for a gas analysis cabin. Background Art

[0002] Gas analysis is very important in natural gas stations because it helps monitor and control the composition and quality of natural gas to ensure safe operation and efficient production. A gas analysis hut is a device used for gas analysis that can be installed in a natural gas station to monitor parameters such as gas composition, concentration and quality.

[0003] In the gas analysis room, a variety of sensors and probes can be installed to detect gases of different components, such as methane, oxygen, hydrogen sulfide, etc. These sensors can detect abnormal gas composition in time by collecting, transmitting and processing data, and take corresponding treatment measures to ensure the safety and stability of natural gas production and transportation. The location of the gas analysis room is fixed. To achieve the effect of all-round monitoring of gas anomalies, the probe is usually rotated to extract gas in different directions for monitoring. The probe generally has two modes: continuous sampling and intermittent sampling. Continuous sampling can continuously monitor the surrounding gas environment, while intermittent sampling is mainly used for monitoring different areas. However, it is easy for gas to remain in the current probe sampling pipeline. During intermittent sampling, the monitoring results of the current area are affected by the gas in the previous area, resulting in errors. Summary of the invention

[0004] The purpose of the present invention is to provide a multi-angle probe mechanism for a gas analysis room to achieve the purpose of automatically exhausting residual gas from the probe and improving the accuracy of gas analysis, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-angle probe mechanism for a gas analysis cabin, comprising a probe seat, the probe seat is provided with an air inlet joint, and the probe seat is provided with a gas supply pipe that can extend into the gas analysis cabin and is rotatably connected thereto, the probe seat is rotatably mounted on the gas analysis cabin, and the gas supply pipe adopts an L-shaped pipe, and a gas supply joint is provided at one end of the gas supply pipe located in the probe seat, and the probe seat is provided with an exhaust joint; a rotatable bracket is provided in the probe seat, and a first connecting pipe and a second connecting pipe are symmetrically installed on the bracket, the two connecting pipes have the same structure, and connecting joints are provided at the ends of the two connecting pipes, and a switch plug structure that is opened after docking is provided in the air inlet joint, and a switch plug structure that is opened after docking is provided through the support The rotation of the frame enables the first connecting tube and the second connecting tube to have three connection modes: connected between the air supply connector and the air intake connector, connected to the exhaust connector, and not connected at both ends. Pistons are installed in the first connecting tube and the second connecting tube, and external control structures are provided for the pistons on the first connecting tube and the second connecting tube. A through hole is provided in the middle of the piston, and a spring plug structure is provided for the through hole on the piston. When one of the two connecting tubes is connected between the air supply connector and the air intake connector, the piston is pushed to move to the end close to the air supply connector by the external control structure, so that the spring plug structure opens. When one of the two connecting tubes is connected to the exhaust structure, the piston is pushed to move to the other end by the external control structure to discharge the gas in the tube. A vacuum connector connected to a vacuum pump is provided on the probe seat.

[0006] Preferably, the air inlet connector and the air exhaust connector are both arranged on the front end surface of the probe base, and the air inlet connector and the air exhaust connector are both arranged on the circular rotation trajectory of the two connecting pipes.

[0007] Preferably, the vertical section of the gas supply pipe passes through the bottom of the probe seat and extends into the gas analysis room, and the horizontal section of the gas supply pipe is on the same straight line as the gas inlet connector, and the gas supply connector and the gas inlet connector are arranged in a mirror image.

[0008] Preferably, a rotating seat and a supporting seat are provided at the bottom of the probe seat, and the gas supply pipe is provided through the rotating seat, an adjusting gear is installed on the rotating seat, and the adjusting gear is connected to a driving device provided on the gas analysis room, and a ball is installed on the supporting seat.

[0009] Preferably, a switching shaft driven by a servo motor is provided in the probe seat, and the bracket is installed on the switching shaft, and the first connecting tube and the second connecting tube are respectively installed on both sides of the bracket.

[0010] Preferably, the switch plug structure includes a wide body and an inner ring arranged in each joint, and a first spring is fixedly connected to the inner ring, a ball seat is connected to the first spring, and the ball seat can seal each joint, and the joint is opened when the ball seat enters the wide body.

[0011] Preferably, the external control structure includes a first guide seat and a second guide seat arranged at both ends of the connecting tube, and a guide rod is connected between the first guide seat and the second guide seat, an outer sliding seat is slidably mounted on the guide rod, and the outer sliding seat and the piston are annularly connected by a traction rope, and the traction rope is sealed and guided by the two guide seats.

[0012] Preferably, a magnetic block is embedded in the outer sliding seat, an air intake electromagnetic seat is arranged near the air intake joint, and an exhaust electromagnetic seat which is in the same straight line as the exhaust joint is arranged in the probe seat.

[0013] Preferably, a clamp is installed on the outer sliding seat, and a limit stopper is installed on the inner wall of the probe seat.

[0014] Preferably, the spring plug structure comprises a connecting rod which is arranged to pass through the through hole, and end blocks and sealing plugs are respectively arranged at both ends of the connecting rod, and a second spring is connected between the end block and the piston.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The probe mechanism of the present invention is based on a multi-angle rotating probe seat. The probe seat is provided with not only an air inlet connector but also an air exhaust connector. The probe seat adopts a rotating structure. When the probe seat rotates at multiple angles for intermittent sampling and monitoring, the gas can be sucked in from the air inlet connector to complete the sampling, and the residual gas can be discharged from the exhaust connector to avoid errors in subsequent monitoring.

[0017] 2. The probe mechanism can perform both continuous sampling and intermittent sampling. A first connecting tube and a second connecting tube are provided in the probe seat, and the two can be connected between the air inlet connector and the air supply connector. When continuous sampling is performed, one of the two connecting tubes can maintain the air inlet connector and the air supply connector. The first connecting tube and the second connecting tube can also be used alternately. The switching shaft drives the bracket to rotate and changes the positions of the first connecting tube and the second connecting tube, so that both have three connection modes. After completing the sampling, one connecting tube can be exhausted in time to avoid the adverse effect of residual gas on the subsequent gas transmission monitoring.

[0018] 3. The air inlet joint, air supply joint, exhaust joint and connecting joint of the present invention are all provided with a switch plug structure. Only when two connecting pipes are connected to other joints through the connecting joint, the connected pipeline will be in a conductive state, effectively preventing other gases from entering. In addition, the probe seat adopts a closed structure and can be vacuumed through a vacuum joint to further avoid the influence of other gases.

[0019] 4. A piston with a spring plug structure is provided in the two connecting tubes of the present invention. The position of the piston can be controlled by an external control structure. When the connecting tube is connected to the air inlet connector and the air supply connector, the switch plug structures at both ends are opened first, and then the piston can be driven to move toward the air supply connector by the external control structure. A through hole is provided in the middle of the piston, and a spring plug structure is provided for the through hole. When the piston is pulled to a position close to the air supply connector, the through hole is opened. At this time, the connecting tube will be in a conducting state, and the air pump structure in the gas analysis room can inhale air, so that the external gas sample enters the room through the connecting tube and the air supply tube. After the sampling is completed, the connecting tube can be rotated to a state connected to the exhaust connector, the piston moves in the opposite direction, and the through hole is closed, and the piston can discharge the residual gas in the connecting tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the external structure of the probe of the present invention.

[0021] Figure 2 It is a bottom schematic diagram of the probe mechanism of the present invention.

[0022] Figure 3 It is a first half cross-sectional schematic diagram of the probe mechanism of the present invention.

[0023] Figure 4 It is a second half cross-sectional schematic diagram of the probe mechanism of the present invention.

[0024] Figure 5 It is a third half-section schematic diagram of the probe mechanism of the present invention.

[0025] Figure 6 It is a half-section schematic diagram of the air intake joint structure of the present invention.

[0026] Figure 7 It is a schematic diagram of the first connecting pipe and the second connecting pipe structure of the present invention.

[0027] Figure 8 It is a first half-section schematic diagram of the first connecting pipe structure of the present invention.

[0028] Fig. 9 It is a second half-section schematic diagram of the first connecting pipe structure of the present invention.

[0029] Fig.10It is a schematic diagram of the movable piston structure of the present invention.

[0030] Fig.11 It is a half-section schematic diagram of the piston structure of the present invention.

[0031] Fig.12 It is a schematic diagram of the position of the double electromagnetic seat structure of the present invention.

[0032] In the figure: 1. probe seat; 2. air inlet joint; 3. air supply pipe; 4. rotating seat; 5. adjusting gear; 6. supporting seat; 7. ball; 8. air supply joint; 9. exhaust joint; 10. switching shaft; 11. bracket; 12. first connecting pipe; 13. second connecting pipe; 14. connecting joint; 15. wide body groove; 16. inner ring; 17. first spring; 18. ball seat; 19. piston; 20. first guide seat; 21. second guide seat; 22. guide rod; 23. outer sliding seat; 24. magnetic block; 25. traction rope; 26. through hole; 27. connecting rod; 28. end block; 29. ​​second spring; 30. sealing plug; 31. air inlet electromagnetic seat; 32. exhaust electromagnetic seat; 33. clamp; 34. limit stopper; 35. vacuum joint. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment. It should be noted that the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] See also Figures 1 to 12The present invention provides a technical solution: a multi-angle probe mechanism for a gas analysis room, comprising a probe seat 1, an air inlet joint 2 is arranged on the probe seat 1, and an air supply pipe 3 which can be extended into the gas analysis room and is rotatably connected thereto is arranged on the probe seat 1, the probe seat 1 is rotatably mounted on the gas analysis room, and the air supply pipe 3 adopts an L-shaped pipe, and an air supply joint 8 is arranged at one end of the air supply pipe 3 located in the probe seat 1, and an exhaust joint 9 is arranged on the probe seat 1; a rotatable bracket 11 is arranged in the probe seat 1, and a first connecting pipe 12 and a second connecting pipe 13 are symmetrically arranged on the bracket 11, the two connecting pipes have the same structure, and a connecting joint 14 is arranged at the ends of the two connecting pipes, and a switch plug structure which is opened after docking is arranged in the air inlet joint 2, the air supply joint 8, the exhaust joint 9 and the connecting joint 14, and the first connecting pipe 12 and the second connecting pipe 13 are symmetrically arranged on the bracket 11, and the two connecting pipes have the same structure ... the two connecting pipes have the same structure, and the two connecting pipes have the same structure, and the two connecting pipes have the same structure, and the two connecting pipes have the same structure, and the two connecting pipes have the same structure, and the two connecting pipes have the same structure, and the two connecting pipes have the same structure, and the two connecting pipes have the same structure, and the two connecting pipes have the same structure, and the two connecting pipes have the same structure, and the two connecting pipes have the same structure, and the The connecting pipe 12 and the second connecting pipe 13 have three connection modes: connected between the air supply connector 8 and the air inlet connector 2, connected to the exhaust connector 9, and not connected at both ends. Pistons 19 are installed in the first connecting pipe 12 and the second connecting pipe 13, and external control structures are provided for the pistons 19. A through hole 26 is provided in the middle of the piston 19, and a spring plug structure is provided for the through hole 26 on the piston 19. When one of the two connecting pipes is connected between the air supply connector 8 and the air inlet connector 2, the piston 19 is pushed to move to the end close to the air supply connector 8 by the external control structure, so that the spring plug structure is opened. When one of the two connecting pipes is connected to the exhaust structure, the piston 19 is pushed to move to the other end by the external control structure to discharge the gas in the pipe. A vacuum connector 35 connected to a vacuum pump is provided on the probe seat 1.

[0035] like Figure 1 As shown, the air inlet connector 2 and the air outlet connector 9 are both arranged on the front end surface of the probe base 1, and the air inlet connector 2 and the air outlet connector 9 are both arranged on the circular rotation track of the two connecting pipes.

[0036] The probe mechanism of the present invention is based on the probe base 1. The probe base 1 is provided with not only an air inlet connector 2 but also an air exhaust connector 9. Gas can be sucked in from the air inlet connector 2 to complete sampling, and residual gas can be discharged from the air exhaust connector 9 to avoid errors in subsequent monitoring.

[0037] like Figure 2-Figure 5 As shown, the vertical section of the gas supply pipe 3 penetrates the bottom of the probe seat 1 and extends into the gas analysis room, and the horizontal section of the gas supply pipe 3 is in the same straight line as the gas inlet connector 2, and the gas supply connector 8 is mirrored with the gas inlet connector 2. A rotating seat 4 and a supporting seat 6 are provided at the bottom of the probe seat 1, and the gas supply pipe 3 penetrates the rotating seat 4 for installation, an adjusting gear 5 is installed on the rotating seat 4, and the adjusting gear 5 is connected to the driving device provided on the gas analysis room, and a ball 7 is installed on the supporting seat 6.

[0038] The probe seat 1 is provided with a gas supply pipe 3 connected to the inside of the gas analysis room. The gas supply pipe 3 can be connected to the gas inlet connector 2, so that the sampled gas is transported to the analysis device through the gas supply pipe 3. The gas supply pipe 3 adopts an L-shaped structure and is vertically inserted into the rotating seat 4 without affecting the rotation of the probe seat 1. It is connected to the adjusting gear 5 through a driving device to drive the rotating seat 4 and the probe seat 1 to rotate. The other end of the probe seat 1 is supported by a supporting seat 6 with a ball 7. The end face of the probe seat 1 provided with the gas inlet connector 2 can face different directions, thereby achieving the effect of multi-angle sampling.

[0039] like Figure 3-Figure 5 As shown, a switching shaft 10 driven by a servo motor is provided in the probe base 1 , and a bracket 11 is installed on the switching shaft 10 , and a first connecting pipe 12 and a second connecting pipe 13 are respectively installed on both sides of the bracket 11 .

[0040] The probe mechanism of the present invention can perform both continuous sampling and intermittent sampling. A first connecting tube 12 and a second connecting tube 13 are provided in the probe base 1, and the two can be connected between the air inlet connector 2 and the air supply connector 8. When sampling continuously, one of the two connecting tubes can maintain the air inlet connector 2 and the air supply connector 8. The first connecting tube 12 and the second connecting tube 13 can also be used alternately. The bracket 11 is driven to rotate by the switching shaft 10 to change the positions of the first connecting tube 12 and the second connecting tube 13, so that both have three connection modes. For example, when the first connecting tube 12 is connected to the air inlet connector 2 for gas input, the second connecting tube 13 is in an idle state. When the first connecting tube 12 is rotated to be connected to the exhaust connector 9 for exhaust, the second connecting tube 13 is still in an idle state. When the first connecting tube 12 is rotated to the idle state after shooting the residual gas, the second connecting tube 13 can be connected to the air inlet connector 2 for gas input.

[0041] like Figure 6 As shown, the switch plug structure includes a wide body and an inner ring 16 arranged in each joint, and a first spring 17 is fixedly connected to the inner ring 16, a ball seat 18 is connected to the first spring 17, and the ball seat 18 can seal each joint, and the joint is opened when the ball seat 18 enters the wide body.

[0042] The air intake connector 2, air supply connector 8, exhaust connector 9 and connecting connector 14 of the present invention are all provided with a switch plug structure. Only when two connecting pipes are connected to other connectors through the connecting connector 14, the connected pipelines will be in a conducting state. When two of the connectors are docked, the two ball seats 18 are squeezed against each other, so that the two overcome the elastic force of the first spring 17 and are pushed into the wide body, and a gap is generated around the ball seat 18, so that the connector is in an open state. Otherwise, when the connecting pipe is vacant, its two ends are closed, and when the air intake connector 2, air supply connector 8 and exhaust connector 9 are not connected, they are also closed to prevent other gases from entering.

[0043] like Figure 8-Figure 10 as well as Fig.12 As shown, the external control structure includes a first guide seat 20 and a second guide seat 21 arranged at both ends of the connecting pipe, and a guide rod 22 is connected between the first guide seat 20 and the second guide seat 21, an outer slide seat 23 is slidably mounted on the guide rod 22, and the outer slide seat 23 and the piston 19 are annularly connected by a traction rope 25, and the traction rope 25 is sealed and guided by two guide seats. A magnetic block 24 is embedded in the outer slide seat 23, and an air intake electromagnetic seat 31 is arranged near the air intake joint 2, and an exhaust electromagnetic seat 32 is arranged in the probe seat 1 and is in the same straight line as the exhaust joint 9.

[0044] Taking the use of the first connecting tube 12 as an example, when the first connecting tube 12 is in an empty state, the residual gas therein has been discharged, and both ends thereof are in a closed state. When the first connecting tube 12 enters a state of being connected to the air inlet connector 2 and the air supply connector 8, the switch plug structures at both ends thereof are first opened, and then the air inlet electromagnetic seat 31 can be powered to generate a magnetic force to attract the outer slide seat 23 with the magnetic block 24, so that the outer slide seat 23 moves on the guide rod 22, and the traction rope 25 is pulled. The traction rope 25 passes through the guide seat. The traction rope 25 is made of elastic material and can be tightly connected to the rope hole of the guide seat to prevent gas leakage. When the outer slide seat 23 drives the traction rope 25 to move, the piston 19 can move in the opposite direction to it in the connecting tube. Therefore, when the outer sliding seat 23 moves to a position close to the air inlet connector 2, the piston 19 can move toward the air supply connector 8, so that the spring plug structure thereon opens, and the air pump structure in the gas analysis room can inhale, so that the external gas sample enters the room through the first connecting pipe 12 and the air supply pipe 3. After the sampling is completed, the first connecting pipe 12 is rotated to a state connected to the exhaust connector 9. At this time, the exhaust electromagnetic seat 32 is used to drive the piston 19 to move in the opposite direction to the above description. The piston 19 moves toward the exhaust connector 9 to discharge the residual gas in the first connecting pipe 12. Similarly, the second connecting pipe 13 works in the same way, and is used alternately with the first connecting pipe 12 for intermittent sampling and monitoring.

[0045] When the internal space of the probe seat 1 allows, the push rod structure and the outer slide seat 23 may be directly used for control.

[0046] like Figure 3 , Figure 4 As shown, a clamp 33 is installed on the outer sliding seat 23 , and a limit stopper 34 is installed on the inner wall of the probe seat 1 .

[0047] The first connecting tube 12 and the second connecting tube 13 of the present invention are used alternately. When the outer slide seat 23 of one connecting tube is driven by magnetic force, the outer slide seat 23 on the other connecting tube can contact the limit block 34 through the clamp 33 to limit the position and prevent it from accidental movement.

[0048] like Fig.11 As shown, the spring plug structure includes a connecting rod 27 that passes through the through hole 26 , and end blocks 28 and sealing plugs 30 are respectively provided at both ends of the connecting rod 27 , and a second spring 29 is connected between the end block 28 and the piston 19 .

[0049] A through hole 26 is provided in the middle of the piston 19, and a spring plug structure is provided for the through hole 26. When the piston 19 is pulled to a position close to the air supply connector 8, the end block 28 can be acted upon by the thrust of the inner ring 16, the connecting rod 27 and the piston 19 move relative to each other, the sealing plug 30 is disengaged from the through hole 26, and the through hole 26 is opened. At this time, the connecting pipe will be in a conducting state. Conversely, when the piston 19 moves to the other side, the sealing plug 30 will close the through hole 26 under the action of the second spring 29, so that the piston 19 can discharge the residual gas.

[0050] In order to prevent the gas in the probe base 1 from entering each joint when the joint is switched, the probe base 1 adopts a closed structure and can be evacuated through the vacuum joint 35 .

[0051] When the present invention is in use: first, the probe mechanism of the present invention is based on the probe seat 1. Not only is an air inlet connector 2 provided on the probe seat 1, but also an air exhaust connector 9 is provided. The gas can be sucked in from the air inlet connector 2 to complete the sampling, and the residual gas can be discharged from the air exhaust connector 9 to avoid errors in subsequent monitoring. A gas supply pipe 3 connected to the inside of the gas analysis room is provided in the probe seat 1. The gas supply pipe 3 can be connected to the air inlet connector 2, so that the sampled gas is transported to the analysis device through the gas supply pipe 3, and the gas supply pipe 3 adopts an L-shaped structure, which is vertically inserted into the rotating seat 4 and does not affect the rotation of the probe seat 1. It is connected to the adjusting gear 5 through a driving device to drive the rotating seat 4 and the probe seat 1 to rotate. The other end of the probe seat 1 is connected to the rotating seat 4 through a roller The probe base 1 is supported by the support seat 6 of the bead 7. The end face of the air inlet connector 2 provided on the probe base 1 can face different directions, so as to achieve the effect of multi-angle sampling. The probe mechanism can perform continuous sampling or intermittent sampling. The first connecting tube 12 and the second connecting tube 13 are provided in the probe base 1, and the two can be connected between the air inlet connector 2 and the air supply connector 8. When continuous sampling is performed, one of the two connecting tubes can keep the air inlet connector 2 and the air supply connector 8. The first connecting tube 12 and the second connecting tube 13 can also be used alternately. The bracket 11 is driven to rotate by the switching shaft 10 to change the position of the first connecting tube 12 and the second connecting tube 13, so that both have three connection modes. For example, when the first connecting tube 12 and the air inlet connector 2 When connected for gas input, the second connecting pipe 13 is in an empty state. When the first connecting pipe 12 is rotated to connect with the exhaust joint 9 for exhaust, the second connecting pipe 13 is still in an empty state. When the first connecting pipe 12 has finished shooting the residual gas and rotates to an empty state, the second connecting pipe 13 can be connected to the intake joint 2 to perform gas input. The intake joint 2, the gas supply joint 8, the exhaust joint 9 and the connecting joint 14 of the present invention are all provided with a switch plug structure. Only when the two connecting pipes are connected to other joints through the connecting joint 14, the pipeline after the connection will be in a conducting state. When two of the joints are docked, the two ball seats 18 are squeezed against each other, so that the two overcome the elastic force of the first spring 17 and are pushed into the wide body. The surrounding of the ball seat 18 A gap is generated, so that the joint is in an open state. Otherwise, when the connecting pipe is vacant, its two ends are closed, and when the air intake joint 2, the air supply joint 8 and the exhaust joint 9 are not connected, they are also closed to prevent other gases from entering. Taking the use of the first connecting pipe 12 as an example, when the first connecting pipe 12 is in an vacant state, the residual gas therein has been discharged, and both ends thereof are in a closed state. When it enters a state of being connected to the air intake joint 2 and the air supply joint 8, the switch plug structures at both ends thereof are first opened, and then the air intake electromagnetic seat 31 can be powered to generate magnetic force to attract the outer slide seat 23 with the magnetic block 24, so that the outer slide seat 23 moves on the guide rod 22, and the traction rope 25 is pulled, and the traction rope 25 passes through the guide seat.The traction rope 25 is made of elastic material and can be tightly connected with the rope hole of the guide seat to prevent gas leakage. When the outer slide seat 23 drives the traction rope 25 to move, the piston 19 can move in the opposite direction to it in the connecting pipe. Therefore, when the outer slide seat 23 moves toward a position close to the air inlet connector 2, the piston 19 can move toward the direction of the air supply connector 8. A through hole 26 is provided in the middle of the piston 19, and a spring plug structure is provided for the through hole 26. When the piston 19 is pulled to a position close to the air supply connector 8, the end block 28 can be subjected to the thrust of the inner ring 16, the connecting rod 27 and the piston 19 move relative to each other, the sealing plug 30 is disengaged from the through hole 26, and the through hole 26 is opened. At this time, the connecting pipe will be in a conducting state, and the air pump structure in the gas analysis room can inhale air, so that the external gas sample passes through the first connecting pipe 12, the supply The air pipe 3 enters the cabin. After the sampling is completed, the first connecting pipe 12 rotates to the state of being connected to the exhaust joint 9. At this time, the exhaust electromagnetic seat 32 drives the piston 19 to move in the opposite direction to the above description. The sealing plug 30 will close the through hole 26 under the action of the second spring 29. The piston 19 moves toward the exhaust joint 9 to discharge the residual gas in the first connecting pipe 12. Similarly, the second connecting pipe 13 works in the same way. It is used alternately with the first connecting pipe 12 for intermittent sampling monitoring. The first connecting pipe 12 and the second connecting pipe 13 of the present invention are used alternately. When the outer slide seat 23 of one connecting pipe is driven by magnetic force, the outer slide seat 23 on the other connecting pipe can contact the limit block 34 through the clamp 33 to limit the position and prevent it from moving unexpectedly.

[0052] The above-mentioned embodiments are only preferred embodiments of the present invention, and cannot be used to limit the scope of protection of the present invention. Various changes made by ordinary technicians in this field based on the above-mentioned concepts without creative work all fall within the scope of protection of the present invention.

Claims

1. A multi-angle probe mechanism for a gas analysis room, comprising a probe seat (1), characterized in that: The probe seat (1) is provided with an air inlet joint (2), and the probe seat (1) is provided with an air supply pipe (3) which can extend into the gas analysis room and is rotatably connected thereto, the probe seat (1) is rotatably mounted on the gas analysis room, the air supply pipe (3) is an L-shaped pipe, and an air supply joint (8) is provided at one end of the air supply pipe (3) located inside the probe seat (1), and the probe seat (1) is provided with an air exhaust joint (9); The probe seat (1) is provided with a rotatable bracket (11), and a first connecting pipe (12) and a second connecting pipe (13) are symmetrically mounted on the bracket (11). The two connecting pipes have the same structure, and the ends of the two connecting pipes are both provided with connecting joints (14). The air inlet joint (2), the air supply joint (8), the air exhaust joint (9) and the connecting joint (14) are all provided with a switch plug structure that is opened after docking. By rotating the bracket (11), the first connecting pipe (12) and the second connecting pipe (13) have three connection modes: connected between the air supply joint (8) and the air inlet joint (2), connected to the air exhaust joint (9), and not connected at both ends. The first connecting pipe (12) and the second connecting pipe (13) are both A piston (19) is installed, and an external control structure is provided for the piston (19) on the first connecting tube (12) and the second connecting tube (13); a through hole (26) is provided in the middle of the piston (19), and a spring plug structure is provided on the piston (19) for the through hole (26); when one of the two connecting tubes is connected between the gas supply connector (8) and the gas inlet connector (2), the piston (19) is pushed to move to one end close to the gas supply connector (8) by the external control structure, so that the spring plug structure opens; when one of the two connecting tubes is connected to the exhaust structure, the piston (19) is pushed to move to the other end by the external control structure, so that the gas in the tube is discharged; and a vacuum connector (35) connected to a vacuum pump is provided on the probe base (1).

2. The multi-angle probe mechanism of a gas analysis room according to claim 1, characterized in that: The air intake connector (2) and the air exhaust connector (9) are both arranged on the front end surface of the probe base (1), and the air intake connector (2) and the air exhaust connector (9) are both arranged on the circular rotation tracks of the two connecting pipes.

3. The multi-angle probe mechanism of a gas analysis room according to claim 1, characterized in that: The vertical section of the gas supply pipe (3) passes through the bottom of the probe seat (1) and extends into the gas analysis room, and the horizontal section of the gas supply pipe (3) is on the same straight line as the gas inlet connector (2), and the gas supply connector (8) and the gas inlet connector (2) are arranged in a mirror image.

4. The multi-angle probe mechanism of a gas analysis room according to claim 1, characterized in that: A rotating seat (4) and a supporting seat (6) are arranged at the bottom of the probe seat (1), and the gas supply pipe (3) is arranged to penetrate the rotating seat (4). An adjusting gear (5) is installed on the rotating seat (4), and the adjusting gear (5) is connected to a driving device arranged on the gas analysis room. A ball (7) is installed on the supporting seat (6).

5. The multi-angle probe mechanism of a gas analysis room according to claim 1, characterized in that: The probe base (1) is provided with a switching shaft (10) driven by a servo motor, and a bracket (11) is mounted on the switching shaft (10), and the first connecting tube (12) and the second connecting tube (13) are respectively mounted on both sides of the bracket (11).

6. The multi-angle probe mechanism of a gas analysis room according to claim 1, characterized in that: The switch plug structure comprises a wide body and an inner ring (16) arranged in each joint, and a first spring (17) is fixedly connected to the inner ring (16), a ball seat (18) is connected to the first spring (17), and the ball seat (18) can seal each joint, and the joint is opened when the ball seat (18) enters the wide body.

7. The multi-angle probe mechanism of a gas analysis room according to claim 1, characterized in that: The external control structure comprises a first guide seat (20) and a second guide seat (21) arranged at both ends of the connecting pipe, and a guide rod (22) is connected between the first guide seat (20) and the second guide seat (21), an outer slide seat (23) is slidably mounted on the guide rod (22), and the outer slide seat (23) and the piston (19) are annularly connected via a traction rope (25), and the traction rope (25) is sealed and guided through the two guide seats.

8. The multi-angle probe mechanism of a gas analysis room according to claim 7, characterized in that: A magnetic block (24) is embedded in the outer sliding seat (23), an air intake electromagnetic seat (31) is arranged near the air intake joint (2), and an exhaust electromagnetic seat (32) is arranged in the probe seat (1) and is in the same straight line as the exhaust joint (9).

9. The multi-angle probe mechanism of a gas analysis room according to claim 7, characterized in that: A clamping piece (33) is mounted on the outer sliding seat (23), and a limit stopper (34) is mounted on the inner wall of the probe seat (1).

10. The multi-angle probe mechanism for a gas analysis room according to claim 1, characterized in that: The spring plug structure comprises a connecting rod (27) which is arranged to penetrate the through hole (26), and end blocks (28) and sealing plugs (30) are respectively arranged at both ends of the connecting rod (27), and a second spring (29) is connected between the end block (28) and the piston (19).

Images