Gas concentration measuring equipment for natural gas operation area

Abstract

The invention relates to the technical field of testing equipment, in particular to gas concentration measuring equipment for a natural gas operation area. The frame is fixedly connected with the mounting seat; the measuring instrument is fixedly connected to the mounting seat; the suction pipe a is fixedly connected to the mounting seat; the detection tube is fixedly connected into the suction tube a; the limiting sheet is fixedly connected in the detection tube; the suction pipe a is internally and rotatably connected with the impeller a; the driving part a is fixedly connected into the mounting seat; and the movable saddle is arranged at the bottom of the frame. According to the invention, a gas suction mode in a cyclic movement process is set, and a limiting sheet is used for reducing the gas flow speed, so that the gas flow speed in the detection tube and the suction tube a is different, the gas can be fully and accurately measured, the gas is sampled according to the speed proportion for measurement, automatic sampling is realized, and the use is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of testing equipment, and in particular to a gas concentration measuring device for a natural gas operation area. Background Art

[0002] In the storage, transportation and use of natural gas, natural gas leakage will pose a major safety hazard. Therefore, natural gas leakage pre-inspection is required in these links to ensure environmental safety and prevent accidents. Especially in the natural gas operation area, the natural gas is densely distributed in the area, which is a high-risk area for leakage accidents. Once an accident occurs, the harm and consequences are difficult to estimate.

[0003] Given that the air in the natural gas operation area contains trace amounts of natural gas, the pre-inspection work is not to detect whether the gas contains natural gas, but to measure the concentration of natural gas in the gas. When the test result exceeds the minimum safety threshold of natural gas, it can be determined that there is a leak. At present, the natural gas concentration test mainly adopts the sampling measurement method, but when sampling, in order to avoid the sampling point just avoiding the leakage point, the sampling interval needs to be kept appropriate and should not be too long, which leads to an increase in the number of sampling points and an increase in the measurement workload. In addition, it is not necessary to re-test after each location is tested for leaks. The measurement work in the natural gas operation area needs to be carried out continuously. Obviously, this measurement method has shortcomings in the use of natural gas operation areas. Summary of the invention

[0004] In view of the above-mentioned defects of the background technology, the present invention proposes a gas concentration measuring device for a natural gas operation area that can continuously perform detection without frequent sampling.

[0005] The technical scheme comprises: a frame; a mounting seat, the frame is fixedly connected with the mounting seat; a measuring instrument, the mounting seat is fixedly connected with the measuring instrument; an absorption tube a, the mounting seat is fixedly connected with the absorption tube a; a detection tube, the absorption tube a is fixedly connected with the detection tube, and the detection element of the measuring instrument is arranged in the detection tube; a limiting plate, the detection tube is fixedly connected with the limiting plate, an angle is arranged between the limiting plate and the projection surface of the front thereof, and the angle is α (75>α>25); an impeller a, the absorption tube a is rotatably connected with the impeller a; a driving member a, the mounting seat is fixedly connected with the driving member a, and the driving member a is drivingly connected with the impeller a; and a movable seat, a movable seat is arranged at the bottom of the frame.

[0006] As a preferred technical solution of the present invention, N limiting plates form a circle (N>3), and at least two layers of limiting plates are arranged in the detection tube.

[0007] As a preferred technical solution of the present invention, it also includes: a processing box, which is fixedly connected to the frame; a connecting pipe, which is fixedly connected to the suction pipe a and communicated with the processing box; a discharge pipe, which is fixedly connected to the processing box; and an absorption plate, which is fixedly connected to the processing box and is arranged between the discharge pipe and the connecting pipe.

[0008] As a preferred technical solution of the present invention, it also includes: an installation frame, which is fixedly connected to the suction tube a; a sealing plate, which is rotatably connected to the installation frame, and the sealing plate is provided with at least three pieces; a torsion spring, which is fixedly connected between the sealing plate and the installation frame.

[0009] As a preferred technical solution of the present invention, it also includes: a suction pipe b, which is fixedly connected to and communicated with the treatment box, and an absorption plate is arranged between the discharge pipe and the suction pipe b; a ball mouth, the end of the suction pipe b is fixedly connected with the ball mouth; an impeller b, which is rotatably connected in the suction pipe b, and the impeller b is transmission-connected to the driving member a.

[0010] As a preferred technical solution of the present invention, the mobile seat includes: a mounting frame, the bottom of the frame is fixedly connected to the mounting frame; a telescopic frame a, the mounting frame is rotatably connected to the telescopic frame a; a connecting plate, the end of the telescopic frame a is rotatably connected to the connecting plate; a wheel, the outside of the connecting plate is rotatably connected to the wheel; a telescopic frame b, the end of the telescopic frame a is rotatably connected to the telescopic frame b; a spring, the two ends of the telescopic frame b are fixedly connected to the spring.

[0011] As a preferred technical solution of the present invention, the mobile seat also includes: a driving member b, which is fixedly connected to the mounting frame; a mounting shaft, which is rotatably connected to the mounting frame, and the driving member b is transmission-connected to the mounting shaft; a universal shaft, a universal shaft is arranged between the mounting shaft and the wheel, and the universal shaft has at least two sections.

[0012] As a preferred technical solution of the present invention, the mobile seat also includes: a mounting plate, to which the mounting plate is fixedly connected; a driving member c, to which the driving member c is fixedly connected on the mounting plate; a control arm, to which the control arm is fixedly connected on the output end of the driving member c; a connecting arm, to which the connecting arm is fixedly connected on the connecting plate; and a connecting rod, to which a connecting rod is rotatably connected between the control arm and the connecting arm.

[0013] Beneficial effects: The present invention sets a method for absorbing gas during the process of traveling and moving, and uses a limiting plate to slow down the gas flow rate, so that there is a difference in the gas flow rate in the detection tube and the absorption tube a, so that the present invention can fully and accurately measure the gas while sampling the gas for measurement according to the speed ratio, realizing automatic sampling and convenient use. The present invention can remove natural gas from the gas after the measurement is completed, and prevent the concentration of natural gas from continuing to increase as much as possible, thereby reducing the possibility of potential danger. The present invention adds a shock-absorbing means to improve the safety of each precision equipment in the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 It is a structural schematic diagram of the measuring unit in the present invention.

[0016] Figure 3 It is a cross-sectional view of the connection structure of the measuring unit in the present invention.

[0017] Figure 4 It is a structural schematic diagram of the processing unit in the present invention.

[0018] Figure 5 It is a cross-sectional view of the connection structure of the processing unit in the present invention.

[0019] Figure 6 It is a cross-sectional view of the position structure of the opening and closing unit in the present invention.

[0020] Figure 7 It is a cross-sectional view of the connection structure of the opening and closing unit in the present invention.

[0021] Figure 8 It is a cross-sectional view of the position structure of the suction unit in the present invention.

[0022] Fig. 9 It is a cross-sectional view of the connection structure of the suction unit in the present invention.

[0023] Fig.10 It is a schematic diagram of the connection structure of the movable seat in the present invention.

[0024] Fig.11 This is a separation diagram of the connection structure between the vehicle frame and the mobile control unit in the present invention.

[0025] Fig.12 It is a schematic diagram of the connection structure between the vehicle frame and the direction control unit in the present invention.

[0026] In the figure: 101, frame, 102, mounting seat, 103, measuring instrument, 104, suction tube a, 105, detection tube, 106, limiting plate, 107, impeller a, 201, driving member a, 202, gear, 301, processing box, 302, connecting pipe, 303, opening plate, 304, discharge pipe, 305, absorption plate, 401, mounting frame, 402, sealing plate, 403, torsion spring, 501, suction tube b, 502, ball mouth, 5 03, impeller b, 504, bevel gear, 505, transmission shaft, 506, transmission member a, 601, mounting frame, 602, telescopic frame a, 603, connecting plate, 604, wheel, 605, telescopic frame b, 606, spring, 701, driving member b, 702, mounting shaft, 703, transmission member b, 704, universal shaft, 801, mounting plate, 802, driving member c, 803, control arm, 804, connecting arm, 805, connecting rod. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, 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 creative work are within the scope of protection of the present invention.

[0028] Embodiment: A gas concentration measuring device for a natural gas operation area, see Figure 1 , including test centers, processing centers and mobile seats; see Figure 1 The test center includes a test unit and an opening and closing unit; see Figure 2 and Figure 3The measuring unit absorbs gas and detects it. The measuring unit includes a frame 101, a mounting seat 102, a measuring instrument 103, a suction tube a104, a detection tube 105, a limiting plate 106, an impeller a107, a driving member a201 and a gear 202; the mounting seat 102 is fixedly mounted on the top of the frame 101; the measuring instrument 103 is fixedly mounted on the left and right sides of the mounting seat 102, and the measuring instrument 103 is used to test whether the gas contains natural gas, test the concentration of natural gas in the gas, and feedback the test results; the suction tube a104 is fixedly mounted on the mounting seat 102; the detection tube 105 is fixedly mounted in the suction tube a104, and the detection element of the measuring instrument 103 is arranged on the inner side wall of the detection tube 105; the detection tube 105 is fixed in the detection tube 105 A limiting plate 106 is installed, and eight limiting plates 106 form a circle. There are five circles of limiting plates 106 in total in the detection tube 105. An angle of 30 degrees is set between the limiting plate 106 and the projection surface of its front side. When the gas passes through the limiting plate 106, the inclined limiting plate 106 will slow down the speed of the gas passing through the detection tube 105; an impeller a107 is rotatably installed in the suction tube a104, and the rotation of the impeller a107 will guide the gas to flow backward, thereby introducing the gas into the detection tube 105; a driving member a201 is fixedly installed in the mounting seat 102, and the driving member a201 is a servo motor; a gear 202 is fixed on the impeller a107, and a gear 202 is fixedly installed on the output end of the driving member a201, and the two gears 202 are meshing.

[0029] Start the driving member a201 and rotate the impeller a107 to suck the gas into the detection tube 105. When the gas passes through the detection tube 105, the detection element provided on the detection tube 105 operates to detect and measure the gas. In the process, the limiting plate 106 slows down the gas flow rate so that the measuring instrument 103 can fully detect the gas.

[0030] See also Figure 6 and Figure 7 When the measuring unit needs to absorb gas, the opening and closing unit automatically opens the absorption tube a104. When the measuring unit is not in operation, the opening and closing unit closes the absorption tube a104. The opening and closing unit includes a mounting frame 401, a sealing plate 402 and a torsion spring 403. The front end of the absorption tube a104 is fixedly installed with a mounting frame 401. The sealing plate 402 is rotatably installed on the mounting frame 401. There are ten sealing plates 402 in total. These ten sealing plates 402 jointly close the pipe opening of the absorption tube a104. A torsion spring 403 is sleeved on the rotating shaft of the sealing plate 402. The two ends of the torsion spring 403 are respectively fixedly installed on the sealing plate 402 and the mounting frame 401.

[0031] When the impeller a107 rotates to control the suction tube a104 to inhale gas, negative pressure is generated in the suction tube a104, causing the sealing plate 402 to rotate and open the pipe mouth of the suction tube a104. When the impeller a107 stops rotating, the sealing plate 402 loses the force brought by the gas flow, and the torsion spring 403 resets the sealing plate 402 to close the pipe mouth of the suction tube a104.

[0032] See also Figure 1 The processing center includes a processing unit and an absorption unit; see Figure 4 and Figure 5 The processing unit processes the natural gas in the gas, and the processing unit includes a processing box 301, a connecting pipe 302, an open plate 303, a discharge pipe 304 and an absorption plate 305; the processing box 301 is fixedly installed at the rear of the frame 101; a connecting pipe 302 is fixedly installed and connected between the processing box 301 and the suction pipe a104, and the gas sucked into the suction pipe a104 will be input into the processing box 301 through the connecting pipe 302; the opening plate 303 is detachably fixedly installed at the rear of the processing box 301, and the opening plate 303 controls the opening and closing of the processing box 301; the discharge pipe 304 is fixedly installed at the bottom of the processing box 301; an absorption plate 305 for absorbing natural gas is fixedly installed in the processing box 301, and the absorption plate 305 is provided with a means for adsorbing natural gas. The absorption plate 305 is arranged between the connecting pipe 302 and the discharge pipe 304, so that the gas passes through the absorption plate 305 and is discharged through the discharge pipe 304.

[0033] The gas after the detection and measurement is input into the processing box 301, and is discharged after being processed by the absorption plate 305; the processing box 301 is opened from the opening plate 303, and the absorption plate 305 can be replaced.

[0034] See also Figure 8 and Fig. 9The suction unit increases the way of absorbing gas of the device and increases the port for guiding natural gas for processing. The suction unit includes: a suction pipe b501, a ball mouth 502, an impeller b503, a bevel gear 504, a transmission shaft 505 and a transmission member a506; two suction pipes b501 are fixedly installed and connected on the processing box 301, and the suction pipe b501 is arranged above the absorption plate 305; a ball mouth 502 is fixedly installed on the top of the suction pipe b501, and the ball mouth 502 increases the range of gas absorption by the suction pipe b501; an impeller b503 is rotatably installed in the suction pipe b501, and the impeller b503 The wheel b503 rotates to suck the gas into the suction pipe b501; a bevel gear 504 is fixedly installed on the rotating shaft of the impeller b503; a transmission shaft 505 is rotatably installed on the frame 101, and a bevel gear 504 is fixedly installed on the transmission shaft 505, and the bevel gear 504 of the impeller b503 is meshed with the bevel gear 504 of the transmission shaft 505; a transmission member a506 is installed between the transmission shaft 505 and the driving member a201, and the transmission member a506 is a transmission pulley assembly, and the driving member a201 drives the impeller b503 to rotate through the transmission member a506, the transmission shaft 505 and the bevel gear 504.

[0035] While driving component a201 controls impeller a107 to draw gas into suction pipe a, driving component a201 drives and controls impeller b503 to draw gas into suction pipe b501, thereby increasing the pathway for gas to enter processing box 301 and improving the efficiency of processing box 301 in processing natural gas.

[0036] See also Fig.10 The mobile base includes a frame, a mobile control unit and a direction control unit; see Fig.10 The frame realizes the mobile function of the equipment, and the frame includes: a mounting frame 601, a telescopic frame a602, a connecting plate 603, wheels 604, a telescopic frame b605 and a spring 606; the mounting frame 601 is fixedly installed at the bottom of the frame 101; the telescopic frame a602 is rotatably installed on the mounting frame 601, and the telescopic frame a602 is composed of two sub-parts, part a and part b, and part a of the telescopic frame a602 is rotatably installed with the mounting frame 601; part b of the telescopic frame a602 is rotatably installed with a connecting plate 603 using a ball head, and the connecting plate 603 can be rotatably installed with the telescopic frame Section b of the telescopic frame a602 can be rotated at any angle; a wheel 604 is rotatably installed outside the connecting plate 603; a telescopic frame b605 is rotatably installed between section b of the telescopic frame a602 and the mounting frame 601, and the telescopic frame b605 is composed of two sliding sections, section c and section d. Section c of the telescopic frame b605 is rotatably installed with the mounting frame 601, and section d of the telescopic frame b605 is rotatably installed with section b of the telescopic frame a602; a spring 606 is sleeved on the telescopic frame b605, and both ends of the spring 606 are respectively fixed on the two sections of the telescopic frame b605.

[0037] During the movement of the frame, when passing through an area with uneven terrain, the telescopic frame a602 will be able to rotate and extend relative to the mounting frame 601 and the connecting plate 603, so that the wheel 604 will be able to move up and down relative to the mounting frame 601, and the displacement of the wheel 604 relative to the mounting frame 601 will cause the telescopic frame b605 to rotate and extend relative to the telescopic frame a602 and the mounting frame 601, causing the spring 606 to deform and buffer the force, so that when the frame moves, the mounting frame 601 can remain more stable relative to the wheel 604, thereby improving the safety of the test center and the processing center.

[0038] See also Fig.10 and 11 The mobile control unit controls the movement of the frame, and the mobile control unit includes a driving member b701, a mounting shaft 702, a transmission member b703 and a universal joint 704; the driving member b701 is fixedly installed on the mounting frame 601, and the driving member b701 is a servo motor; the mounting shaft 702 is rotatably installed on the front side of the mounting frame 601; a transmission member b703 is installed between the driving member b701 and the mounting shaft 702, and the transmission member b703 is a transmission pulley assembly; a universal joint 704 is arranged between the mounting shaft 702 and the two wheels 604 at the rear side, and the universal joint 704 is arranged with three sections, and the universal joint 704 is fixedly installed with the wheels 604 and the mounting shaft 702.

[0039] By using the universal joint 704 for transmission, the three-section universal joint 704 can be transformed multiple times, so that the mobile control unit can adapt to various relative positions of the wheels 604 and the mounting frame 601, and ensure that the frame can be controlled to move by the mobile control unit.

[0040] See also Fig.10 and 12 The direction control unit controls the frame to change the moving direction, and the direction control unit includes a mounting plate 801, a driving member c802, a control arm 803, a connecting arm 804 and a connecting rod 805; the mounting frame 601 is fixedly mounted with a mounting plate 801; the mounting plate 801 is fixedly mounted with a driving member c802, and the driving member c802 is a servo motor; two control arms 803 are fixedly mounted on the output end of the driving member c802; the connecting arms 804 are fixedly mounted on the two connecting plates 603 on the rear side; the connecting rods 805 are rotatably mounted between the two control arms 803 and the two connecting arms 804 respectively, and the rotation of the control arms 803 will push / pull the connecting arms 804 through the connecting rods 805, thereby controlling the change in the angle of the connecting plates 603 and the wheels 604.

[0041] By using the three-level transmission relationship of the control arm 803, the connecting arm 804 and the connecting rod 805, the direction control unit can adapt to various relative positions of the wheel 604 and the mounting frame 601, and ensure that the frame can be controlled by the direction control unit to change the moving direction.

[0042] The device is put into the natural gas operation area to perform concentration measurement operations, the suction tube a104 is controlled to inhale gas to measure the natural gas concentration, and the device is controlled to move in the natural gas operation area according to a preset route; when the device is measuring the concentration, since the device is constantly moving, the gas to be detected will be continuously supplied to the detection tube 105 in conjunction with the continuous operation of the suction tube a104. In order to ensure the measurement accuracy of the detection element on the detection tube 105, the device uses a limiting plate 106 to reduce the flow speed of the gas in the detection tube 105, so that the detection element can fully measure the gas, and under the deceleration effect of the limiting plate 106, the difference in the flow speed of the gas in the detection tube 105 and the suction tube a104 makes the gas entering the suction tube a104 not all enter the detection tube 105, but enter according to the speed ratio. Therefore, the device can evenly sample the air at each position during the movement to achieve automatic sampling. That is, when using the device to measure the concentration, there is no need to sample at a fixed point, only to set a patrol route, and the device can evenly sample the gas at each position in the route for measurement.

[0043] When the measured concentration of natural gas exceeds the minimum safety threshold, the device stops moving and provides real-time feedback of the leakage location data to remind the operation and maintenance personnel to check and repair in time. During the process of stopping movement, the suction pipe a104 and the suction pipe b501 continue to suck the leaked natural gas into the processing box 301, so that the gas passes through the absorption plate 305 to remove the natural gas, and then discharges the gas to prevent the concentration of natural gas from continuing to increase as much as possible, until the operation and maintenance personnel arrive at the site for inspection and maintenance, and then control the device to continue pre-inspection work on the site; when the absorption plate 305 needs to be replaced after a period of use, the opening plate 303 can be opened for replacement.

[0044] The sealing plate 402 can control the automatic opening and closing of the suction tube a104, automatically opening when the suction tube a104 inhales gas, and automatically closing when the device is not in use, so as to protect the detection elements in the detection tube 105 and improve the convenience and safety of use of the device.

[0045] The mobile base improves the flexibility of the device in self-controlling and patrolling movement by using a mobile control unit and a direction control unit; and the frame is provided with a shock-absorbing means to improve the safety of the device.

[0046] The undisclosed parts in the present invention are all prior art, and their specific structures, materials and working principles are not described in detail. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A gas concentration measuring device for a natural gas operation area, comprising: A frame (101); a mounting seat (102), the mounting seat (102) being fixedly connected to the frame (101); a measuring instrument (103), the mounting seat (102) being fixedly connected to the measuring instrument (103), the measuring instrument (103) testing whether the gas contains natural gas and testing the concentration of natural gas in the gas; an aspiration tube a (104), the mounting seat (102) being fixedly connected to the aspiration tube a (104); a detection tube (105), the aspiration tube a (104) being fixedly connected to the detection tube (105), the detection element of the measuring instrument (103) being arranged in the detection tube (105); a limiting sheet (106 ), a limiting plate (106) is fixedly connected inside the detection tube (105), the limiting plate (106) is used to slow down the speed of gas passing through the detection tube (105), an angle is set between the limiting plate (106) and its front projection surface, and the angle value is α (75>α>25); an impeller a (107), the impeller a (107) is rotatably connected inside the suction tube a (104); a driving member a (201), the driving member a (201) is fixedly connected inside the mounting seat (102), and the driving member a (201) is transmission-connected to the impeller a (107); a movable seat, a movable seat is arranged at the bottom of the frame (101).

2. A gas concentration measuring device for a natural gas operation area according to claim 1, characterized in that: N limiting plates (106) form a circle (N>3), and at least two circles of limiting plates (106) are arranged in the detection tube (105).

3. A gas concentration measuring device for a natural gas operation area according to claim 2, characterized in that: Also includes: A processing box (301), the frame (101) is fixedly connected with the processing box (301); a connecting pipe (302), the processing box (301) is fixedly connected to the suction pipe a (104) and is in communication with the connecting pipe (302); a discharge pipe (304), the processing box (301) is fixedly connected with the discharge pipe (304); an absorption plate (305), the processing box (301) is fixedly connected with an absorption plate (305) for treating natural gas, and the absorption plate (305) is arranged between the discharge pipe (304) and the connecting pipe (302).

4. A gas concentration measuring device for a natural gas operation area according to claim 3, characterized in that: Also includes: A mounting frame (401) is fixedly connected inside the suction tube a (104); a sealing plate (402) is rotatably connected to the mounting frame (401), at least three sealing plates (402) are provided, and each sealing plate (402) together seals the tube opening of the suction tube a (104); and a torsion spring (403) is fixedly connected between the sealing plate (402) and the mounting frame (401).

5. A gas concentration measuring device for a natural gas operation area according to claim 4, characterized in that: The invention also comprises: a suction pipe b (501), the suction pipe b (501) is fixedly connected to and communicated with the processing box (301), and an absorption plate (305) is arranged between the discharge pipe (304) and the suction pipe b (501); a ball mouth (502), the end of the suction pipe b (501) is fixedly connected to the ball mouth (502); and an impeller b (503), the impeller b (503) is rotatably connected in the suction pipe b (501), and the impeller b (503) is drivingly connected to the driving member a (201).

6. A gas concentration measuring device for a natural gas operation area according to claim 5, characterized in that: The mobile vehicle seat comprises: a mounting frame (601), the mounting frame (601) being fixedly connected to the bottom of the frame (101); a telescopic frame a (602), the mounting frame (601) being rotatably connected to the telescopic frame a (602); a connecting plate (603), the end of the telescopic frame a (602) being rotatably connected to the connecting plate (603); a wheel (604), the outside of the connecting plate (603) being rotatably connected to the wheel (604); a telescopic frame b (605), the end of the telescopic frame a (602) being rotatably connected to the mounting frame (601); and a spring (606), the two ends of the telescopic frame b (605) being fixedly connected to the springs (606).

7. A gas concentration measuring device for a natural gas operation area according to claim 6, characterized in that: The mobile vehicle seat further comprises: a driving member b (701), the driving member b (701) being fixedly connected to the mounting frame (601); a mounting shaft (702), the mounting frame (601) being rotatably connected to the mounting shaft (702), the driving member b (701) being transmission-connected to the mounting shaft (702); and a universal shaft (704), the universal shaft (704) being arranged between the mounting shaft (702) and the wheel (604), the universal shaft (704) being provided with at least two sections.

8. The gas concentration measuring device for a natural gas operation area according to claim 7, characterized in that: The mobile vehicle seat further comprises: a mounting plate (801), the mounting frame (601) being fixedly connected to the mounting plate (801); a driving member c (802), the mounting plate (801) being fixedly connected to the driving member c (802); a control arm (803), the output end of the driving member c (802) being fixedly connected to the control arm (803); a connecting arm (804), the connecting plate (603) being fixedly connected to the connecting arm (804); and a connecting rod (805), the control arm (803) being rotatably connected to the connecting arm (804).

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