Standard Gas Detection Devices and Systems

Abstract

The present invention discloses a standard gas detection device and system, which belongs to the field of gas detection technology. The standard gas detection device comprises: a support base; a collection frame and a driving piston fixedly connected to the support base; a driving shaft rotatably connected to the collection frame; wherein, a plurality of sets of fan-shaped frames are fixedly connected to the side wall of the driving shaft, and a collection tube is detachably connected to the fan-shaped frame; a piston plate slidably connected to the driving piston; an air outlet pipe; an air inlet pipe; a reciprocating motion assembly; the present invention is convenient for collecting the standard gas in the standard gas cylinder through the provided driving piston, and convenient for controlling different collection tubes to communicate with the collection chamber through the provided rotating driving shaft, so as to continuously collect the gas in the standard gas cylinder, and at the same time, the rotation of the driving shaft can collect the gas in the standard gas cylinder at different times, so as to facilitate the detection of the labeled gas at different times, and improve the accuracy of the detection result.

Description

Technical Field

[0001] The present invention relates to the technical field of gas detection, and in particular to a standard gas detection device and system. Background Art

[0002] In the research and development and production of gas analysis instruments, standard gas is used as a standard substance to calibrate and calibrate instruments.

[0003] Since standard gases have a certain validity period, the stability of standard gases is a key issue during use.

[0004] As we all know, an important requirement for standard gases packed in cylinders is that their value should not change during storage and use.

[0005] In fact, when the component gases in the standard gas come into contact with the inner wall of the container, they often cause adsorption, desorption, chemical reactions, etc., so that their values ​​change over time. This phenomenon is inevitable and affects the accuracy of the analysis results of the gas analyzer. Therefore, it is necessary to test the standard gas in a timely manner. Summary of the invention

[0006] The purpose of the present invention is to solve the problems raised in the above background technology and to propose a standard gas detection device and system.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] The standard gas detection device comprises: a supporting base; a collecting frame and a driving piston fixedly connected to the supporting base; a driving shaft rotatably connected to the collecting frame; wherein a plurality of sets of fan-shaped frames are fixedly connected to the side walls of the driving shaft, and a collecting tube is detachably connected to the fan-shaped frame; a piston plate slidably connected to the driving piston; wherein a collecting chamber is provided on both sides of the piston plate; an air outlet pipe, one end of which is connected to the collecting chamber and the other end of which is connected to the collecting frame; an air inlet pipe, which is connected to the collecting chamber; a reciprocating motion assembly, which is connected to the driving shaft and is used to drive the piston plate to slide reciprocatingly; a driving motor is fixedly connected to the supporting base, and the driving shaft is fixedly connected to the output end of the driving motor.

[0009] In order to facilitate the up and down sliding of the piston plate, preferably, the reciprocating motion assembly includes: a driven gear rotatably connected to the collecting rack; a cam fixedly connected to the driven gear; wherein the cam is provided with a T-slot, and a T-block is slidably connected to the collecting rack, and the T-block is clamped in the T-slot; a connecting rope, the two ends of which are respectively fixedly connected to the T-block and the piston plate; a driving spring, the two ends of which are respectively fixedly connected to the piston plate and the driving piston; the driving shaft is fixedly connected to the driving gear, and the driving gear is meshed with the driven gear.

[0010] In order to facilitate the movement of the T-block on the cam, preferably, a support rod is fixedly connected to the T-block, a support groove is provided on the collecting frame, and the support rod is slidably connected to the support groove.

[0011] In order to facilitate guiding the sliding direction of the connecting pull rope, preferably, a guide wheel is fixedly connected to the driving piston, and the connecting pull rope is in contact with the guide wheel.

[0012] In order to facilitate gas collection in the collection pipe, preferably, the two outlet pipes are connected to a connecting pipe at one end away from the collection chamber, the collection pipe is provided with a connecting port connected to the connecting pipe, the collection pipe is slidably connected to a magnetic closing plate, an elastic rope is fixedly connected to the magnetic closing plate, the other end of the elastic rope is fixedly connected to the connecting port, the connecting port is provided with an air inlet groove, and the collection frame is fixedly connected to a magnetic driving block.

[0013] In order to facilitate the collection of the collection tube, preferably, the collection frame and the fan-shaped frame are provided with an inlet groove and a drop groove.

[0014] In order to facilitate opening of the drop groove, preferably, a support plate is slidably connected to the drop groove, a buffer piston is fixedly connected to the connecting pipe, a buffer plate is slidably connected in the buffer piston, a buffer spring is fixedly connected to the buffer plate, one end of the buffer spring away from the buffer plate is fixedly connected to the buffer piston, a buffer cavity communicated with the connecting pipe is provided in the buffer piston, and the buffer plate and the support plate are connected by a driven pull rope.

[0015] In order to facilitate the collection of standard gases at different times, preferably, it also includes a placement rack for placing the collection tube, the placement rack is fixedly connected to the collection rack, a placement push plate is slidably connected inside the collection rack, the placement push plate and the placement rack are connected by a placement spring, the placement rack is provided with a placement release groove, and the placement release groove is located at the upper end of the inlet groove.

[0016] The standard gas detection system includes a standard gas detection device and further includes:

[0017] Standard gas cylinders used to store standard gases;

[0018] Wherein, the air inlet pipe on the driving piston is connected to the standard gas cylinder through a connecting valve, and is used to extract the standard gas in the standard gas cylinder;

[0019] The collecting tube is used to collect the standard gas sucked into the driving piston;

[0020] Photometer, used to detect the standard gas in the collection tube.

[0021] Compared with the prior art, the present invention provides a standard gas detection device and system, which has the following beneficial effects:

[0022] The parts not involved in the device are the same as the prior art or can be implemented by the prior art. The present invention facilitates the collection of standard gas in the standard gas cylinder by setting a driving piston, and facilitates the control of different collection tubes to communicate with the collection chamber by setting a rotating driving shaft, so as to facilitate the continuous collection of gas in the standard gas cylinder. At the same time, the rotation of the driving shaft can collect the gas in the standard gas cylinder at different times, thereby facilitating the detection of marked gas at different times and improving the accuracy of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of the standard gas detection device and system proposed by the present invention;

[0024] Figure 2 The standard gas detection device and system proposed by the present invention Figure 1 Schematic diagram of the structure of part A;

[0025] Figure 3 The standard gas detection device and system proposed by the present invention Figure 1 The structural diagram of part B;

[0026] Figure 4 The standard gas detection device and system proposed by the present invention Figure 1 Schematic diagram of the structure of part C;

[0027] Figure 5 A schematic diagram of the structure of a stand for the standard gas detection device and system proposed in the present invention;

[0028] Figure 6 A schematic diagram of the structure of the cam of the standard gas detection device and system proposed by the present invention;

[0029] Figure 7 A schematic diagram of the structure of the fan-shaped frame of the standard gas detection device and system proposed by the present invention;

[0030] Figure 8 This is a system flow diagram of the standard gas detection device and system proposed in the present invention.

[0031] In the figure: 1, support base; 2, driving piston; 201, piston plate; 202, collecting chamber; 203, air outlet pipe; 2031, connecting pipe; 204, air inlet pipe; 205, driving spring; 3, collecting frame; 301, inlet slot; 302, drop slot; 303, supporting plate; 304, driven pull rope; 4, driving motor; 401, driving shaft; 402, fan-shaped frame; 403, collecting pipe; 404, connecting port; 405, magnetic closing plate; 406, spring Sex rope; 407, air inlet groove; 408, magnetic drive block; 5, driving gear; 501, driven gear; 502, cam; 503, T-slot; 504, T-block; 5041, support rod; 5042, support groove; 505, connecting pull rope; 506, guide wheel; 6, buffer piston; 601, buffer chamber; 602, buffer spring; 603, buffer plate; 7, placement rack; 701, placement spring; 702, placement push plate; 703, placement stripping groove. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] Embodiment 1:

[0035] Reference Figure 1-8 The standard gas detection device comprises: a support base 1; a collection frame 3 and a driving piston 2 fixedly connected to the support base 1; a driving shaft 401 rotatably connected to the collection frame 3; wherein a plurality of sets of fan-shaped frames 402 are fixedly connected to the side wall of the driving shaft 401, and a collection tube 403 is detachably connected to the fan-shaped frame 402; a piston plate 201 slidably connected to the driving piston 2; wherein both sides of the piston plate 201 are provided with a collection chamber 202; an outlet pipe 203, one end of which is communicated with the collection chamber 202, and the other end of which is communicated with the collection frame 3; an air inlet pipe 204, which is communicated with the collection chamber 202; a reciprocating motion component, which is connected to the driving shaft 401 and is used to drive the piston plate 201 to slide back and forth;

[0036] The support base 1 is fixedly connected to a driving motor 4, and a driving shaft 401 is fixedly connected to an output end of the driving motor 4;

[0037] One-way valves are provided in the air inlet pipe 204 and the air outlet pipe 203, so that the gas flows from the air inlet pipe 204 through the collecting chamber 202 to the air outlet pipe 203;

[0038] When using the device, the driving shaft 401 needs to be rotated to replace a different collecting tube 403 to communicate with the gas outlet pipe 203 on the driving piston 2, and the piston plate 201 needs to be controlled to slide inside the driving piston 2 so that the gas in the collecting chamber 202 enters the collecting tube 403;

[0039] Specifically, when the driving shaft 401 is rotated, the driving shaft 401 drives the fan-shaped frame 402 to rotate, so that the fan-shaped frame 402 drives the collecting pipe 403 inside it to rotate, so that the collecting pipe 403 is connected with the gas outlet pipe 203;

[0040] When the driving shaft 401 rotates, the piston plate 201 is driven to slide up and down through the reciprocating assembly, so that the space in one of the two collecting chambers 202 increases, and the gas in the collecting chamber 202 is supplemented through the air inlet pipe 204, and the space in the other collecting chamber 202 decreases. The gas in the collecting chamber 202 is discharged through the air outlet pipe 203 and then enters the collecting pipe 403 for collection, so as to facilitate the collection of standard gas.

[0041] As time goes by, the driving shaft 401 rotates continuously, so that different collection tubes 403 are connected to the gas outlet pipe 203, thereby collecting samples of standard gas at different times.

[0042] The driving motor 4 can drive the driving shaft 401 to rotate, so as to rotate the collecting tube 403 .

[0043] The reciprocating motion assembly includes: a driven gear 501 rotatably connected to the collection frame 3; a cam 502 fixedly connected to the driven gear 501; wherein the cam 502 is provided with a T-slot 503, and a T-block 504 is slidably connected to the collection frame 3, and the T-block 504 is clamped in the T-slot 503; a connecting pull rope 505, the two ends of which are respectively fixedly connected to the T-block 504 and the piston plate 201; a driving spring 205, the two ends of which are respectively fixedly connected to the piston plate 201 and the driving piston 2; a driving shaft 401 is fixedly connected to the driving gear 5, and the driving gear 5 is meshed with the driven gear 501. Specifically, the diameter of the driving gear 5 is larger than the diameter of the driven gear 501, so that the driven gear 501 can complete a reciprocating motion process without the driving shaft 401 rotating one circle;

[0044] When the driving shaft 401 rotates, it drives the driving gear 5 to rotate, and then drives the driven gear 501 to rotate through gear meshing, and then drives the cam 502 to rotate. At this time, through the T-slot 503, T-block 504, connecting rope 505, and driving spring 205, the piston plate 201 is driven to slide back and forth in the driving piston 2;

[0045] Specifically, when a collecting pipe 403 is rotated and replaced to communicate with the gas outlet pipe 203 , the piston plate 201 completes a reciprocating slide in the driving piston 2 .

[0046] A support rod 5041 is fixedly connected to the T-block 504, and a support groove 5042 is provided on the collecting frame 3. The support rod 5041 is slidably connected to the support groove 5042. The support rod 5041 is slidably connected in the support groove 5042, which can guide the T-block 504 so that the T-block 504 moves in a straight line and does not rotate with the rotation of the cam 502.

[0047] A guide wheel 506 is fixedly connected to the driving piston 2, and the connecting rope 505 is attached to the guide wheel 506;

[0048] It is convenient to guide the sliding of the connecting rope 505. Specifically, a sealing rubber sleeve is provided at the connection between the connecting rope 505 and the driving piston 2 to prevent the leakage of the standard gas in the collecting chamber 202.

[0049] One end of the two air outlet pipes 203 away from the collecting chamber 202 is connected to a connecting pipe 2031, and a connecting port 404 connected to the connecting pipe 2031 is provided on the collecting pipe 403, and a magnetic closing plate 405 is slidably connected to the collecting pipe 403, and an elastic rope 406 is fixedly connected to the magnetic closing plate 405, and the other end of the elastic rope 406 is fixedly connected to the connecting port 404, and an air inlet groove 407 is provided on the connecting port 404, and a magnetic driving block 408 is fixedly connected to the collecting frame 3;

[0050] When the communication port 404 on the collection pipe 403 is connected to the connection pipe 2031, it is affected by the magnetic force of the magnetic driving block 408 and the magnetic closing plate 405. It should be noted that the magnetic driving block 408 and the magnetic closing plate 405 have the same magnetic poles on the sides close to each other, so that the magnetic closing plate 405 slides, so that the air inlet groove 407 is connected to the connection pipe 2031, thereby facilitating the gas to enter the collection pipe 403.

[0051] When the connecting port 404 on the collecting tube 403 is not connected to the connecting tube 2031, the elastic rope 406 causes the magnetic closing plate 405 to block the connecting port 404, thereby closing the collecting tube 403 to prevent gas leakage and facilitate carrying the collecting tube 403.

[0052] The collecting frame 3 and the fan-shaped frame 402 are provided with an inlet groove 301 and a drop groove 302 to facilitate the disassembly of the collecting pipe 403.

[0053] A support plate 303 is slidably connected to the drop-mouth groove 302, a buffer piston 6 is fixedly connected to the connecting pipe 2031, a buffer plate 603 is slidably connected inside the buffer piston 6, a buffer spring 602 is fixedly connected to the buffer plate 603, one end of the buffer spring 602 away from the buffer plate 603 is fixedly connected to the buffer piston 6, a buffer cavity 601 communicating with the connecting pipe 2031 is provided inside the buffer piston 6, the buffer plate 603 is connected to the support plate 303 through a driven pull rope 304, a spring is provided on the support plate 303, and the other end of the spring is fixedly connected to the collecting rack 3;

[0054] When the gas in the collecting chamber 202 enters the connecting tube 2031, the gas will expand and enter the buffer chamber 601, causing the buffer plate 603 to move downward. Through the driven pull rope 304 and the spring, the supporting plate 303 can slide and support the collecting tube 403.

[0055] When the connecting pipe 2031 is connected to the communication port 404, the gas in the buffer chamber 601 enters the collecting pipe 403, so that the driven pull rope 304 does not support the collecting pipe 403 on the drop groove 302, and the collecting pipe 403 falls;

[0056] This facilitates the placement of a new collection tube 403 and the next collection.

[0057] It also includes a placement rack 7 for placing the collection tube 403, the placement rack 7 is fixedly connected to the collection rack 3, a placement push plate 702 is slidably connected in the collection rack 3, the placement push plate 702 and the placement rack 7 are connected through a placement spring 701, and a placement release groove 703 is provided on the placement rack 7, and the placement release groove 703 is located at the upper end of the inlet groove 301;

[0058] The collecting tube 403 on the placing rack 7 will pass through the placing and removing slot 703 and the inlet slot 301 into the fan-shaped rack 402;

[0059] The placing spring 701 is used to make the placing push plate 702 squeeze the collecting tube 403 to be located on the placing release groove 703 .

[0060] Embodiment 2:

[0061] Reference Figure 1-8 , standard gas detection device, the driving motor 4 can drive the driving shaft 401 to rotate. When using this device, it is necessary to rotate the driving shaft 401 to replace a different collecting tube 403 to communicate with the gas outlet pipe 203 on the driving piston 2, and at the same time, it is necessary to control the piston plate 201 to slide in the driving piston 2 so that the gas in the collecting chamber 202 enters the collecting tube 403;

[0062] When the driving shaft 401 is rotated, the driving shaft 401 drives the fan-shaped frame 402 to rotate, so that the fan-shaped frame 402 drives the collecting pipe 403 inside it to rotate, so that the collecting pipe 403 is connected with the gas outlet pipe 203;

[0063] When the driving shaft 401 rotates, the piston plate 201 is driven to slide up and down through the reciprocating assembly, so that the space in one of the two collecting chambers 202 increases, and the gas in the collecting chamber 202 is supplemented through the air inlet pipe 204, and the space in the other collecting chamber 202 decreases. The gas in the collecting chamber 202 is discharged through the air outlet pipe 203 and then enters the collecting pipe 403 for collection, so as to facilitate the collection of standard gas.

[0064] As time goes by, the driving shaft 401 rotates continuously, so that different collection tubes 403 are connected to the gas outlet tube 203, thereby collecting samples of standard gas at different times;

[0065] When the driving shaft 401 rotates, it drives the driving gear 5 to rotate, and then drives the driven gear 501 to rotate through gear meshing, and then drives the cam 502 to rotate. At this time, through the T-slot 503, T-block 504, connecting rope 505, and driving spring 205, the piston plate 201 is driven to slide back and forth in the driving piston 2;

[0066] When rotating and replacing a collecting pipe 403 to communicate with the gas outlet pipe 203, the piston plate 201 completes a reciprocating slide in the driving piston 2;

[0067] When the communication port 404 on the collection pipe 403 is connected to the connection pipe 2031, it is affected by the magnetic force of the magnetic driving block 408 and the magnetic closing plate 405. It should be noted that the magnetic driving block 408 and the magnetic closing plate 405 have the same magnetic poles on the sides close to each other, so that the magnetic closing plate 405 slides, so that the air inlet groove 407 is connected to the connection pipe 2031, thereby facilitating the gas to enter the collection pipe 403.

[0068] When the communication port 404 on the collection tube 403 is not connected to the connection tube 2031, the magnetic closing plate 405 blocks the communication port 404 due to the elastic rope 406, closing the collection tube 403 to prevent gas leakage and facilitate carrying the collection tube 403;

[0069] When the gas in the collecting chamber 202 enters the connecting tube 2031, the gas will expand and enter the buffer chamber 601, causing the buffer plate 603 to move downward. Through the driven pull rope 304 and the spring, the supporting plate 303 can slide and support the collecting tube 403.

[0070] When the connecting pipe 2031 is connected to the communication port 404, the gas in the buffer chamber 601 enters the collecting pipe 403, so that the driven pull rope 304 does not support the collecting pipe 403 on the drop groove 302, and the collecting pipe 403 falls;

[0071] The collecting tube 403 on the placing rack 7 will pass through the placing and removing slot 703 and the inlet slot 301 into the fan-shaped rack 402, so as to facilitate the placing of the new collecting tube 403 and the next collection;

[0072] Embodiment 3:

[0073] Reference Figure 1-8 , a standard gas detection system, including a standard gas detection device, and further comprising:

[0074] Standard gas cylinders used to store standard gases;

[0075] Among them, the air inlet pipe 204 on the driving piston 2 is connected to the standard gas cylinder through a connecting valve, which is used to extract the standard gas in the standard gas cylinder; the collecting tube 403 is used to collect the standard gas sucked from the driving piston 2; the photometer is used to detect the standard gas in the collecting tube 403, and then the standard gas in the collecting tube 403 is detected by the photometer.

[0076] The present invention facilitates the collection of standard gas in the standard gas cylinder by means of the drive piston 2, and facilitates the control of different collection tubes 403 to communicate with the collection chamber 202 by means of the rotating drive shaft 401, so as to facilitate the continuous collection of gas in the standard gas cylinder. Meanwhile, the rotation of the drive shaft 401 can collect gas in the standard gas cylinder at different times, thereby facilitating the detection of labeled gas at different times and improving the accuracy of the detection results.

[0077] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. Standard gas detection device, characterized in that, include: Support base (1); A collecting frame (3) and a driving piston (2) fixedly connected to the supporting base (1); Rotating a drive shaft (401) connected to the collection frame (3); Wherein, a plurality of sets of fan-shaped frames (402) are fixedly connected to the side wall of the driving shaft (401), and a collecting pipe (403) is detachably connected inside the fan-shaped frame (402); A piston plate (201) slidably connected within the driving piston (2); Wherein, both sides of the piston plate (201) are provided with a collecting chamber (202); An air outlet pipe (203), one end of which is in communication with the collection chamber (202), and the other end of which is in communication with the collection rack (3); An air inlet pipe (204) communicating with the collecting chamber (202); A reciprocating motion assembly connected to the driving shaft (401) and used to drive the piston plate (201) to slide reciprocatingly; The support base (1) is fixedly connected to a drive motor (4), and the drive shaft (401) is fixedly connected to an output end of the drive motor (4); When using the device, the driving shaft (401) needs to be rotated to replace a different collecting tube (403) to communicate with the gas outlet tube (203) on the driving piston (2), and at the same time, the piston plate (201) needs to be controlled to slide inside the driving piston (2) so that the gas in the collecting chamber (202) enters the collecting tube (403); When the driving shaft (401) is rotated, the driving shaft (401) drives the fan-shaped frame (402) to rotate, so that the fan-shaped frame (402) drives the collecting pipe (403) inside the fan-shaped frame to rotate, so that the collecting pipe (403) is connected to the air outlet pipe (203); When the drive shaft (401) rotates, the reciprocating assembly drives the piston plate (201) to slide reciprocatingly up and down, so that the space in one of the two collecting chambers (202) increases, and the gas in the collecting chamber (202) is replenished through the air inlet pipe (204), while the space in the other collecting chamber (202) decreases, and the gas in the collecting chamber (202) is discharged through the air outlet pipe (203) and then enters the collecting pipe (403) for collection, so as to facilitate the collection of standard gas; As time goes by, the driving shaft (401) continuously rotates, so that different collection tubes (403) are connected to the gas outlet tube (203), thereby collecting samples of standard gas at different times.

2. The standard gas detection device according to claim 1, characterized in that: The reciprocating motion assembly comprises: Rotating a driven gear (501) connected to the collecting frame (3); A cam (502) fixedly connected to the driven gear (501); The cam (502) is provided with a T-shaped slot (503), the collecting frame (3) is slidably connected with a T-shaped block (504), and the T-shaped block (504) is snap-fitted into the T-shaped slot (503); A connecting pull rope (505) with both ends fixedly connected to the T-shaped block (504) and the piston plate (201) respectively; A driving spring (205), both ends of which are fixedly connected to the piston plate (201) and the driving piston (2) respectively; The driving shaft (401) is fixedly connected to a driving gear (5), and the driving gear (5) is meshed with a driven gear (501).

3. The standard gas detection device according to claim 2, characterized in that: A support rod (5041) is fixedly connected to the T-shaped block (504), a support groove (5042) is provided on the collection rack (3), and the support rod (5041) is slidably connected to the support groove (5042).

4. The standard gas detection device according to claim 2, characterized in that: A guide wheel (506) is fixedly connected to the driving piston (2), and the connecting pull rope (505) is in contact with the guide wheel (506).

5. The standard gas detection device according to claim 2, characterized in that: One end of the two air outlet pipes (203) away from the collection chamber (202) is connected to a connecting pipe (2031); the collecting pipe (403) is provided with a connecting port (404) connected to the connecting pipe (2031); the collecting pipe (403) is slidably connected to a magnetic closing plate (405); the magnetic closing plate (405) is fixedly connected to an elastic rope (406); the other end of the elastic rope (406) is fixedly connected to the connecting port (404); the connecting port (404) is provided with an air inlet groove (407); and the collecting frame (3) is fixedly connected to a magnetic driving block (408).

6. The standard gas detection device according to claim 5, characterized in that: The collecting frame (3) and the fan-shaped frame (402) are provided with an inlet groove (301) and an outlet groove (302).

7. The standard gas detection device according to claim 6, characterized in that: The drop-out groove (302) is slidably connected to a support plate (303), the connecting tube (2031) is fixedly connected to a buffer piston (6), a buffer plate (603) is slidably connected inside the buffer piston (6), a buffer spring (602) is fixedly connected to the buffer plate (603), one end of the buffer spring (602) away from the buffer plate (603) is fixedly connected to the buffer piston (6), a buffer cavity (601) communicating with the connecting tube (2031) is provided inside the buffer piston (6), and the buffer plate (603) is connected to the support plate (303) via a driven pull rope (304).

8. The standard gas detection device according to claim 6, characterized in that: It also includes a placement rack (7) for placing the collection tube (403), the placement rack (7) being fixedly connected to the collection rack (3), a placement push plate (702) being slidably connected inside the collection rack (3), the placement push plate (702) and the placement rack (7) being connected via a placement spring (701), and a placement release groove (703) being provided on the placement rack (7), the placement release groove (703) being located at the upper end of the inlet groove (301).

9. A standard gas detection system, comprising the standard gas detection device according to any one of claims 1 to 8, characterized in that: Also includes: Standard gas cylinders used to store standard gases; The air inlet pipe (204) on the driving piston (2) is connected to the standard gas cylinder via a connecting valve and is used to extract the standard gas in the standard gas cylinder; The collecting tube (403) is used to collect the standard gas sucked into the driving piston (2); The optical meter is used to detect the standard gas in the collecting tube (403).

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