A sampling port direction adjustment device for a greenhouse gas observation station

Abstract

The present invention belongs to the field of atmospheric environment monitoring technology, and in particular, is a sampling port direction adjustment device for a greenhouse gas observation station. Aiming at the problem that the high-altitude sampling device in the prior art does not have the function of automatically adjusting the sampling port direction according to the mainstream wind direction, the following scheme is proposed, including a timing mechanism arranged in the ground station house and a bottom support plate arranged on the top of the detection tower, and a support ring seat is fixed on the top of the bottom support plate. During the monitoring process, when there is a short-term different wind direction passing by, the steering motor will not start, and the cantilever rod will remain unchanged; if the wind blowing at this time is the mainstream wind direction that blows for a long time, the first-level signal in the timing mechanism will be sent to the controller, and the main rotating barrel will rotate with the cantilever rod and the L-shaped traction frame; until the device returns to the initial state, that is, the cantilever rod is parallel to the wind direction plate, that is, consistent with the mainstream wind direction at this time, and the sampler is adjusted to the upwind position.

Description

Technical Field

[0001] The present invention relates to the technical field of atmospheric environment monitoring, and in particular to a sampling port direction adjustment device for a greenhouse gas observation station. Background Art

[0002] In order to cope with global warming, major countries and regions in the world have proposed carbon peak and carbon neutrality goals, and relevant policies and regulations have gradually been formed and implemented. Carbon monitoring is to obtain information on carbon source and sink conditions and their changing trends, such as greenhouse gas emission intensity, environmental concentrations, and ecosystem carbon sinks, through comprehensive observations, combined with numerical simulations, statistical analysis and other means; greenhouse gas emissions have had a serious impact on climate change and environmental pollution; in order to effectively monitor and control greenhouse gas emissions, sampling devices that can accurately reflect the local vertical distribution of greenhouse gases are needed.

[0003] After searching, it was found that the greenhouse gas sampling devices in the prior art do not have the function of automatically adapting to wind direction. Most of my country is a monsoon climate controlled area. In order to make the sampling port located in the upwind direction, the monitor often needs to manually adjust the direction, which is very inconvenient for operations at high altitudes and multiple sampling points. Therefore, we propose an information adjustment device that can automatically adjust the direction of the sampling port according to the mainstream direction, so as to free up manual control, provide convenience for multi-point sampling and improve efficiency. Summary of the invention

[0004] In view of the technical problem that the high-altitude sampling device in the prior art does not have the function of automatically adjusting the direction of the sampling port according to the mainstream wind direction, the present invention adopts the following technical solution:

[0005] A sampling port direction adjustment device for a greenhouse gas observation station comprises a timing mechanism arranged in a ground station house and a bottom support plate arranged on the top of a detection tower, a supporting ring seat is fixed on the top of the bottom support plate, and a main rotating barrel with an opening downward and an overall barrel-shaped structure is rotatably connected to the inner wall of the circumference of the top of the supporting ring seat, a cantilever rod with a reverse extension line passing through the center of the circle is arranged at the top of the main rotating barrel near the circumferential edge, and a sampler is arranged at one end of the lower surface of the cantilever rod away from the main rotating barrel; an L-shaped traction frame is fixed to a position of the upper surface of the main rotating barrel away from the cantilever rod, and a secondary signal switch device is arranged in the L-shaped traction frame; a folding rod is rotatably sleeved on the circumferential outer wall of the main rotating barrel near the top, and a folding fixing rod is fixed to the circumferential outer wall of the folding rod near the top, and the folding fixing rod is away from the folding fixing rod. A wind deflector with a vertical surface is fixed at one end of the folded rod, and the surface of the wind deflector passes through the axis of the main rotating barrel; a vertical rod is fixed near the middle of the upper surface of the folded fixed rod, and a traction rope is fixed between the top of the vertical rod and the top of the L-shaped traction frame; a driving mechanism for driving the main rotating barrel to rotate is fixed on the upper surface of the bottom support plate, and the driving mechanism includes a steering motor fixed on the bottom support plate; a semicircular rotating groove is opened on the circumferential outer wall of the main rotating barrel near the bottom of the L-shaped traction frame, and a monitoring pump switch is arranged at the semicircular rotating groove; the secondary signal switch device is connected to a controller, and the signal output end of the controller is connected to the electric control switch of the steering motor; a primary signal switch device is arranged in the timing mechanism; the signal output end of the primary signal switch device is connected to the signal receiving end of the controller.

[0006] Preferably, the secondary signal switch device includes a centripetal sliding hole provided at one end of the L-shaped traction frame away from the cantilever rod, and a touch slider is slidably connected in the centripetal sliding hole, a compression spring is fixed to one end of the touch slider close to the axis line, and a spring baffle matched with the compression spring is fixed to one end of the inner wall of the centripetal sliding hole close to the cantilever rod; a contact piece 1 is embedded at one end of the circumferential inner wall of the centripetal sliding hole close to the spring baffle, and a spring piece is fixed to one end of the touch slider away from the traction rope, and a convex point is fixed to one end of the spring piece away from the touch slider, the convex point can contact with the contact piece 1 when the touch slider slides axially, and when the traction rope is not pulled, the convex point does not contact with the contact piece 1, when the traction rope is pulled, that is, when the wind direction plate drives the folded fixed rod to rotate, the convex point moves axially with the touch slider and then contacts with the contact piece 1, and a secondary signal is sent to the controller at this time.

[0007] Preferably, an anti-twist sliding groove is arranged inside the centripetal sliding hole, and a protrusion matched with the anti-twist sliding groove is reserved on the circumferential outer wall of the touch slider.

[0008] Preferably, the driving mechanism also includes a fixed suspension rod fixed to the inner wall of the top of the main rotary barrel and extending vertically downward, the fixed suspension rod coincides with the axis centerline, and a bevel gear 1 is fixed to the bottom end of the fixed suspension rod, an axle rod frame 1 is fixed to the middle of the upper surface of the bottom support plate, and a horizontal axis is arranged at the top of the axle rod frame 1, a driven bevel gear 2 and a worm gear meshing with the bevel gear 1 are respectively fixed at both ends of the horizontal axis, and a worm sleeve meshing with the worm gear is fixed to the top of the output shaft of the steering motor; through such an arrangement, a reverse self-locking effect can be achieved when the steering motor is not working, thereby avoiding slight rotation in the adjusted direction.

[0009] Preferably, a notch is provided in the middle of one end of the wind deflector away from the folded fixing rod, and a generator motor is embedded in the notch, which can be used to power the signal light when in use, so that it can be seen from a distance whether the device is in normal operation.

[0010] Preferably, the monitoring pump switch includes an axle rod seat fixed on the upper surface of the main rotating barrel near the circumferential edge, and the axle rod seat is fixed in the middle position just above the semicircular rotating groove, the middle rotation of the axle rod seat is connected with a transmission rotating rod, and the upper and lower ends of the transmission rotating rod are respectively fixed with a wind guide plate and a tilting rod, one end of the tilting rod passes through the semicircular rotating groove and extends into the interior of the main rotating barrel, an arc-shaped metal connecting piece is fixed on the circumferential inner wall of the main rotating barrel near the semicircular rotating groove, and a metal contact block matched with the arc-shaped metal connecting piece is fixed on one end of the tilting rod near the semicircular rotating groove; a wear-resistant protrusion is fixed to the other end of the tilting rod, and an annular edge matched with the position of the wear-resistant protrusion is provided on the circumferential outer wall of the folding rod, and a wear-resistant gasket is fixed to the upper surface of the annular edge near the root of the folding fixing rod; when the folding fixing rod carries the wear-resistant gasket and rotates to the bottom of the axle rod seat, that is, the L-shaped traction frame, the circuit at the other end of the tilting rod is connected, that is, the monitoring pump switch is turned on.

[0011] Preferably, a screw hole is formed at one end of the wear-resistant protrusion away from the metal contact block, a stud is screwed into the screw hole, and a counterweight is fixed at one end of the stud away from the wear-resistant protrusion.

[0012] Preferably, the timing mechanism includes a large water tank arranged in the station house, the large water tank is a rectangular box structure with an opening facing upward, and a monitoring bucket is fixed to the inner wall of the large water tank near one end of the opening, the top of the monitoring bucket is provided with an oblique opening, and the opening of one side of the oblique opening close to the middle of the large water tank is lower than the other side, and an anti-overflow groove is reserved in the middle of the side of the oblique opening close to the bottom opening; a leakage hole is provided at the bottom of the monitoring bucket, and a drainage pipe is inserted in the leakage hole; a built-in water replenishment pump is fixed to the bottom of the monitoring bucket, and a delivery pipe is inserted at the output end of the built-in water replenishment pump; the drainage end of the delivery pipe is inserted into the monitoring bucket, and the delivery volume of the delivery pipe is greater than the drainage volume of the drainage pipe; a vertical fixed support plate is fixed to the outer wall of the monitoring bucket on the side away from the anti-overflow groove, and a long groove and a short groove are respectively provided on the side of the fixed support plate close to the anti-overflow groove, The long groove is located at the top, and the long groove and the short groove are respectively embedded with a long metal plate and a first-level signal connection gasket; a vertical C-shaped guide rail is fixed to the bottom of the monitoring barrel, and a cylindrical float is slidably connected in the C-shaped guide rail, and a top rod is fixed to the top of the cylindrical float, and a sliding electric contact block in contact with the surface of the long metal plate is provided on the top of the top rod; when the wind direction remains unchanged, the built-in water replenishment pump is in a working state, at which time the cylindrical float floats up and drives the sliding electric contact block to contact with the long metal plate at the top. Once the wind direction changes significantly, the built-in water replenishment pump is turned off and the water level slowly drops. After a long period of decline, the sliding electric contact block will drop to the lowest end and contact with the first-level signal connection gasket. At this time, a first-level signal will be sent to the controller, combined with the second-level signal that has been sent. At this time, it is determined that the wind direction is basically stable and is the mainstream wind direction.

[0013] Preferably, a clamping spring is fixed to the top of the push rod, and the lower surface of the sliding electrical contact block is fixed to the top of the clamping spring; the clamping spring is bent toward the side where the fixed support plate is located; so that the surface of the sliding electrical contact block can always be in close contact with the long metal plate.

[0014] Preferably, a flow regulating valve is provided in the middle of the drain pipe, and a gap is left between the bottom end of the drain pipe and the water level in the large water tank; the flow of the drain pipe can be adjusted according to the triggering time, the smaller the flow, the longer the time, so that it will not be affected by short-term turbulence.

[0015] The beneficial effects of the present invention are:

[0016] 1. During the monitoring process, when there is a short-term different wind direction passing through, due to the existence of the timing mechanism, if it is not a long-term mainstream wind direction, the steering motor will not start at this time, and then the cantilever rod will remain unchanged; if the wind blowing at this time is a long-term mainstream wind direction, this will cause the first-level signal in the timing mechanism to be sent to the controller, and the controller will send a command to control the steering motor to start. At this time, the main rotating barrel will rotate with the cantilever rod and the L-shaped traction frame; until the device returns to the initial state, that is, the cantilever rod is parallel to the wind direction plate, that is, consistent with the mainstream wind direction at this time, and the sampler is adjusted to the upwind position.

[0017] 2. By setting the anti-twist groove and protrusion, it can be ensured that when the trigger slider produces axial movement, the protrusion on the spring sheet can normally contact the contact sheet, and then can normally send out the secondary signal; the groove-shaped solid rod is provided with a hinged plate at one end close to the sampler, and the outer wall of the sampler is rotatably connected to the surface of the hinged plate, so that the opening direction of the sampler can be adjusted.

[0018] 3. By setting the counterweight block, when in use, after the wear-resistant gasket is turned away, the other end of the tilting rod can be automatically tilted up to ensure that the circuit can be disconnected normally. After disconnection, the built-in water supply pump stops working, and the drain pipe starts to drain water slowly. The drainage time is set in advance, which mainly distinguishes the mainstream wind direction and the occasional passing wind or turbulence. If the wind direction swings at a small angle, the wear-resistant protrusion can rotate with the wear-resistant gasket under the action of the wind guide plate, and the circuit at the metal contact block end will not be affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the operation flow chart of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the present invention in the initial state;

[0021] Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged structure at C in the middle;

[0022] Figure 4 It is a front view of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the present invention after the wind direction changes;

[0024] Figure 6 It is a top view of the present invention after the wind direction changes;

[0025] Figure 7 For the present invention Figure 6 Schematic diagram of the cross-sectional structure along line AA;

[0026] Figure 8It is a schematic diagram of the overall structure of the timing mechanism in the present invention;

[0027] Fig. 9 It is a partial cross-sectional structural schematic diagram of the timing mechanism in the present invention;

[0028] Fig.10 It is a schematic diagram of a half-cut three-dimensional structure of the present invention;

[0029] Fig.11 For the present invention Fig.10 Schematic diagram of the enlarged structure at point B in the middle.

[0030] In the figure: 1, support ring seat; 2, folding rod; 201, annular edge; 3, sampler; 4, hinged plate; 5, cantilever rod; 6, main rotating barrel; 601, semicircular rotating groove; 7, L-shaped traction frame; 701, contact piece 1; 702, spring piece; 703, spring baffle; 704, compression spring; 8, touch slider; 9, traction rope; 10, shaft rod seat; 11, vertical rod; 12, folding fixing rod; 13, wind deflector; 14, generator motor; 15, counterweight; 16, wear-resistant gasket; 17, tilting rod; 171, wear-resistant protrusion; 172. Metal contact block; 18. Arc-shaped metal connector; 19. Transmission rod; 20. Bottom support plate; 21. Fixed suspension rod; 22. Driven bevel gear 2; 23. Shaft rod frame 1; 24. Worm gear; 25. Steering motor; 26. Large water tank; 27. Delivery pipe; 28. Push rod; 29. ​​Sliding electrical contact block; 30. Long metal plate; 31. Fixed support plate; 32. Primary signal connection gasket; 33. Monitoring barrel; 3301. Anti-overflow groove; 34. Columnar float; 35. C-shaped guide rail; 36. Drain pipe; 37. Monitoring pump. DETAILED DESCRIPTION

[0031] 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.

[0032] In this embodiment, refer to Figure 1-Figure 11, a sampling port direction adjustment device for a greenhouse gas observation station, comprising a timing mechanism arranged in a ground station house and a bottom support plate 20 arranged on the top of a detection tower, a support ring seat 1 is fixed on the top of the bottom support plate 20, and the top circumferential inner wall of the support ring seat 1 is rotatably connected with a main rotating barrel 6 with an opening downward and an overall barrel-shaped structure, a cantilever rod 5 with a reverse extension line passing through the center of the circle is arranged at the top of the main rotating barrel 6 near the circumferential edge, a sampler 3 is arranged at the end of the lower surface of the cantilever rod 5 away from the main rotating barrel 6, and the opening of the sampler 3 faces the end away from the main rotating barrel 6; an L-shaped traction frame 7 is fixed at a position on the upper surface of the main rotating barrel 6 away from the cantilever rod 5, and a secondary signal switch device is arranged in the L-shaped traction frame 7; and the line connecting the center of the L-shaped traction frame 7 and the center point of the cantilever rod 5 passes through the axis of the main rotating barrel 6; a folding rod 2 is rotatably sleeved on the circumferential outer wall of the main rotating barrel 6 near the top, and the circumferential outer wall of the folding rod 2 is close to the top A folding fixed rod 12 is fixed, and a wind deflector 13 with a vertical plate surface is fixed at one end of the folding fixed rod 12 away from the folding rod 2, and the plate surface of the wind deflector 13 passes through the axis of the main rotating barrel 6; a vertical rod 11 is fixed near the middle of the upper surface of the folding fixed rod 12, and a traction rope 9 is fixed between the top of the vertical rod 11 and the top of the L-shaped traction frame 7; a driving mechanism for driving the main rotating barrel 6 to rotate is fixed on the upper surface of the bottom support plate 20, and the driving mechanism includes a steering motor 25 fixed on the bottom support plate 20; a semicircular rotating groove 601 is opened on the circumferential outer wall of the main rotating barrel 6 near the bottom of the L-shaped traction frame 7, and a monitoring pump switch is arranged at the semicircular rotating groove 601; the secondary signal switch device is connected to a controller, and the signal output end of the controller is connected to the electric control switch of the steering motor 25; a primary signal switch device is arranged in the timing mechanism; the signal output end of the primary signal switch device is connected to the signal receiving end of the controller;

[0033] Specifically, during the monitoring process, when there is a short period of different wind directions passing by, due to the existence of the timing mechanism, if it is not a long-term mainstream wind direction, the steering motor 25 will not start at this time, and then the cantilever rod 5 remains unchanged; if the wind blowing at this time is a long-term mainstream wind direction, this will cause the first-level signal in the timing mechanism to be sent to the controller, and the controller will send an instruction to control the steering motor 25 to start. At this time, the main rotating barrel 6 rotates with the cantilever rod 5 and the L-shaped traction frame 7; until the device returns to the initial state, that is, the cantilever rod 5 is parallel to the wind deflector 13, that is, it is consistent with the mainstream wind direction at this time, and the sampler 3 is adjusted to the upwind position.

[0034] Reference Figure 10-11The secondary signal switch device includes a centripetal sliding hole provided at one end of the L-shaped traction frame 7 away from the cantilever rod 5, and a touch slider 8 is slidably connected in the centripetal sliding hole, a compression spring 704 is fixed to one end of the touch slider 8 close to the axis, and a spring baffle 703 adapted to the compression spring 704 is fixed to one end of the inner wall of the centripetal sliding hole close to the cantilever rod 5; a contact piece 701 is embedded at one end of the circumferential inner wall of the centripetal sliding hole close to the spring baffle 703, and a spring piece 702 is fixed to one end of the touch slider 8 away from the traction rope 9, and a convex point is fixed to one end of the spring piece 702 away from the touch slider 8, and the convex point can contact with the contact piece 701 when the touch slider 8 slides axially, and when the traction rope 9 is not pulled, the convex point does not contact with the contact piece 701.

[0035] Specifically, when the traction rope 9 is pulled, that is, when the wind deflector 13 drives the folded fixing rod 12 to rotate, the protrusion moves axially with the trigger slider 8 and then comes into contact with the contact piece 701, and a secondary signal is sent to the controller.

[0036] Reference Figure 10-11 , an anti-twist slide groove is arranged inside the centripetal slide hole, and a protrusion matching the anti-twist slide groove is reserved on the circumferential outer wall of the touch slider 8;

[0037] Specifically, by setting the anti-twist groove and protrusion, it can be ensured that when the trigger slider 8 produces axial movement, the protrusion on the spring sheet 702 can normally contact the contact sheet 701, and then can normally send out the secondary signal; the groove-shaped fixed rod 5 is provided with a hinge plate 4 at one end close to the sampler 3, and the outer wall of the sampler 3 is rotatably connected to the surface of the hinge plate 4, and the opening direction of the sampler 3 can be adjusted.

[0038] Reference Figure 7 and Fig.10 The driving mechanism also includes a fixed suspension rod 21 fixed to the inner wall of the top of the main rotary barrel 6 and extending vertically downward, the fixed suspension rod 21 coincides with the axis center line, and a bevel gear 1 is fixed to the bottom end of the fixed suspension rod 21, a shaft rod frame 23 is fixed to the middle of the upper surface of the bottom support plate 20, and a horizontal axis is arranged at the top of the shaft rod frame 23, and a driven bevel gear 22 and a worm gear 24 meshing with the bevel gear 1 are respectively fixed at both ends of the horizontal axis, and a worm sleeve meshing with the worm gear 24 is fixed to the top of the output shaft of the steering motor 25; through such an arrangement, a reverse self-locking effect can be achieved when the steering motor 25 is not working, thereby avoiding slight rotation in the adjusted direction.

[0039] Reference Figure 2 A notch is provided in the middle of one end of the wind deflector plate 13 away from the folded fixing rod 12, and a generator motor 14 is embedded in the notch. The generator motor 14 can be used to power the signal light when in use, and then it can be seen from a distance whether the device is in normal operation.

[0040] Reference Figure 1-Figure 3 The monitoring pump switch includes a shaft rod seat 10 fixed on the upper surface of the main rotating barrel 6 near the circumferential edge, and the shaft rod seat 10 is fixed in the middle position just above the semicircular rotating groove 601, and the middle of the shaft rod seat 10 is rotatably connected with a transmission rotating rod 19, and the upper and lower ends of the transmission rotating rod 19 are respectively fixed with a wind guide plate and a tilting rod 17, one end of the tilting rod 17 passes through the semicircular rotating groove 601 and extends into the interior of the main rotating barrel 6, an arc-shaped metal connecting piece 18 is fixed to the circumferential inner wall of the main rotating barrel 6 near the semicircular rotating groove 601, and the tilting rod 17 is close to the semicircular rotating groove 601. A metal contact block 172 that matches the arc-shaped metal connector 18 is fixed at one end; a wear-resistant protrusion 171 is fixed at the other end of the tilting rod 17, and the circumferential outer wall of the folding rod 2 is provided with an annular edge 201 that matches the position of the wear-resistant protrusion 171, and a wear-resistant gasket 16 is fixed on the upper surface of the annular edge 201 near the root of the folding fixing rod 12; when the folding fixing rod 12 carries the wear-resistant gasket 16 and rotates to the bottom of the shaft rod seat 10, that is, the L-shaped traction frame 7, the circuit at the other end of the tilting rod 17 is connected, that is, the monitoring pump switch is turned on.

[0041] Reference Figure 3 and Fig. 9 A screw hole is formed at one end of the wear-resistant protrusion 171 away from the metal contact block 172, and a stud is screwed into the screw hole, and a counterweight 15 is fixed at one end of the stud away from the wear-resistant protrusion 171;

[0042] Specifically, during use, after the wear-resistant gasket 16 is turned away, ensure that the other end of the tilting rod 17 can automatically tilt up to ensure that the circuit can be disconnected normally. After disconnection, the built-in water replenishment pump 37 stops working, and the drain pipe 36 starts to drain water slowly. The drainage time is set in advance, mainly to distinguish between the mainstream wind direction and the occasional passing wind or turbulence. If the wind direction swings at a small angle, the wear-resistant protrusion 171 can rotate with the wear-resistant gasket 16 under the action of the wind guide plate, and the circuit at the end of the metal contact block 172 will not be affected.

[0043] Reference Figure 8-Figure 9The timing mechanism includes a large water tank 26 arranged in the station house. The large water tank 26 is a rectangular box structure with an opening upward, and a monitoring bucket 33 is fixed to the inner wall of the large water tank 26 near one end of the opening. The top of the monitoring bucket 33 is provided with an oblique opening, and the opening on one side near the middle of the large water tank 26 is lower than the other side, and an anti-overflow groove 3301 is reserved in the middle of the side near the bottom opening of the oblique opening; a leakage hole is provided at the bottom of the monitoring bucket 33, and a drainage pipe 36 is inserted into the leakage hole; a built-in water replenishment pump 37 is fixed to the bottom of the monitoring bucket 33, and the output end of the built-in water replenishment pump 37 is plugged with a delivery pipe 27; the drainage end of the delivery pipe 27 is inserted into the monitoring bucket 33, and The conveying volume of the conveying pipe 27 is greater than the drainage volume of the drainage pipe 36; a vertical fixed support plate 31 is fixed to the outer wall of the side of the monitoring barrel 33 away from the anti-overflow groove 3301, and a long groove and a short groove are respectively opened on the side of the fixed support plate 31 close to the anti-overflow groove 3301, the long groove is located at the top, and a long metal plate 30 and a first-level signal connection gasket 32 ​​are respectively embedded in the long groove and the short groove; a vertical C-shaped guide rail 35 is fixed to the bottom of the monitoring barrel 33, and a columnar floating block 34 is slidably connected in the C-shaped guide rail 35, and a top rod 28 is fixed to the top of the columnar floating block 34, and a sliding electrical contact block 29 in contact with the surface of the long metal plate 30 is provided at the top of the top rod 28;

[0044] Specifically, when the wind direction remains unchanged, the built-in water supply pump 37 is in working condition. At this time, the columnar float 34 floats up and drives the sliding electrical contact block 29 to contact the long metal plate 30 at the top. Once the wind direction changes significantly, the built-in water supply pump 37 is turned off and the water level slowly drops. After a long period of decline, the sliding electrical contact block 29 will drop to the lowest end and contact the primary signal connection gasket 32. At this time, a primary signal will be sent to the controller, combined with the secondary signal that has been sent. At this time, it is determined that the wind direction is basically stable and is the mainstream wind direction.

[0045] Reference Figure 8-Figure 9 A clamping spring is fixed to the top of the push rod 28, and the lower surface of the sliding electrical contact block 29 is fixed to the top of the clamping spring; the clamping spring is bent toward the side where the fixed support plate 31 is located; so that the surface of the sliding electrical contact block 29 is always in close contact with the long metal plate 30.

[0046] Reference Fig. 9 A flow regulating valve is provided in the middle of the drain pipe 36, and a gap is left between the bottom end of the drain pipe 36 and the water level in the large water tank 26; the flow of the drain pipe 36 can be adjusted according to the triggering time, the smaller the flow, the longer the time, so that it will not be affected by short-term turbulence.

[0047] Working principle, during the monitoring process, when there is a short-term different wind direction passing by, the folding fixed rod 12 in the initial position will be turned away under the action of the wind direction plate 13, and the monitoring pump switch will also be turned on at this time, but due to the existence of the timing mechanism, if it is not a long-term mainstream wind direction, the first-level signal switch device in the timing mechanism will not be triggered, and the first-level signal will not be sent out. At this time, the steering motor 25 will not be started, and then the cantilever rod 5 remains unchanged; if the wind blowing at this time is a long-term mainstream wind direction, at this time, after a long period of blowing, not only the monitoring pump switch is turned on for a long time, which eventually causes the first-level signal in the timing mechanism to be sent to the controller, but also the second-level signal switch device in the L-shaped traction frame 7 has been started. The folding fixed rod 12 rotates to pull the traction rope 9 to be in a taut state, and the second-level signal switch device is started at this time, and the second-level signal is sent to the controller. At this time, the controller receives When the primary signal and the secondary signal are detected, it is determined to be the mainstream wind direction. At this time, the controller sends an instruction to control the steering motor 25 to start. At this time, the main rotary barrel 6 rotates with the cantilever rod 5 and the L-shaped traction frame 7; until the L-shaped traction frame 7 is rotated to a position close to the folded fixed rod 12, the tightened traction rope 9 becomes loose and loses the pulling force on the touch slider 8. At this time, the secondary signal in the L-shaped traction frame 7 disappears; the steering motor 25 no longer rotates, and the device returns to the initial state, that is, the cantilever rod 5 is parallel to the wind direction plate 13, that is, it is consistent with the mainstream wind direction at this time, that is, the sampler 3 is adjusted to the upwind position; after resetting, the wear-resistant gasket 16 moves back to the bottom of the wear-resistant protrusion 171 and pads this end. At this time, the metal contact block 172 at the other end of the tilting rod 17 descends and releases from the arc-shaped metal contact piece 18, that is, the detection pump switch is turned on and the detection pump switch is automatically turned on, and then the timing mechanism slowly returns to the initial state.

[0048] 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. A sampling port direction adjustment device for a greenhouse gas observation station, comprising a timing mechanism arranged in a ground station house and a bottom support plate (20) arranged on the top of a detection tower, a support ring seat (1) being fixed to the top of the bottom support plate (20), and a main rotating barrel (6) being rotatably connected to the inner circumference of the top of the support ring seat (1), characterized in that: A cantilever rod (5) is provided at the top of the main rotating barrel (6) near the circumferential edge, and a sampler (3) is provided at one end of the lower surface of the cantilever rod (5) away from the main rotating barrel (6); an L-shaped traction frame (7) is fixed at a position on the upper surface of the main rotating barrel (6) away from the cantilever rod (5), and a secondary signal switch device is provided in the L-shaped traction frame (7); a folding rod (2) is rotatably sleeved on the circumferential outer wall of the main rotating barrel (6) near the top, and a folding rod (2) is fixed on the circumferential outer wall near the top A folding fixing rod (12), an end of the folding fixing rod (12) away from the folding rod (2) is fixed with a wind direction plate (13) with a vertical plate surface, and the plate surface of the wind direction plate (13) passes through the axis of the main rotating barrel (6); a vertical rod (11) is fixed near the middle of the upper surface of the folding fixing rod (12), and a traction rope (9) is fixed between the top of the vertical rod (11) and the top of the L-shaped traction frame (7); a driving mechanism for driving the main rotating barrel (6) to rotate is fixed to the upper surface of the bottom support plate (20); The driving mechanism comprises a steering motor (25) fixed on a bottom support plate (20); a semicircular rotating groove (601) is formed on the circumferential outer wall of the main rotating barrel (6) near the lower side of the L-shaped traction frame (7), and a monitoring pump switch is arranged at the semicircular rotating groove (601); a secondary signal switch device is connected to a controller, and a signal output end of the controller is connected to an electric control switch of the steering motor (25); a primary signal switch device is arranged in the timing mechanism; a signal output end of the primary signal switch device is connected to a signal receiving end of the controller; the secondary signal switch device comprises a centripetal sliding hole formed at one end of the L-shaped traction frame (7) away from the cantilever rod (5), and a touch slider (8) is slidably connected in the centripetal sliding hole, A compression spring (704) is fixed to one end of the touch slider (8) close to the axis, and a spring baffle (703) matching the compression spring (704) is fixed to one end of the inner wall of the centripetal slide hole close to the cantilever rod (5); a contact piece 1 (701) is embedded in one end of the circumferential inner wall of the centripetal slide hole close to the spring baffle (703), and a spring piece (702) is fixed to one end of the touch slider (8) away from the traction rope (9), and a convex point is fixed to one end of the spring piece (702) away from the touch slider (8), and the convex point can contact the contact piece 1 (701) when the touch slider (8) slides axially, and when the traction rope (9) is not pulled, the convex point does not contact the contact piece 1 (701); The driving mechanism further comprises a fixed suspension rod (21) fixed to the inner wall of the top of the main rotary barrel (6) and extending vertically downward, the fixed suspension rod (21) coincides with the axis center line, and a bevel gear 1 is fixed to the bottom end of the fixed suspension rod (21), a shaft rod frame 1 (23) is fixed to the middle of the upper surface of the bottom support plate (20), and a transverse axis is arranged at the top end of the shaft rod frame 1 (23), and a driven bevel gear 2 (22) and a worm gear (24) which mesh with the bevel gear 1 are respectively fixed at both ends of the transverse axis, and a worm sleeve which meshes with the worm gear (24) is fixed to the top end of the output shaft of the steering motor (25); The monitoring pump switch comprises a shaft seat (10) fixed to the upper surface of the main rotating barrel (6) near the circumferential edge, and the shaft seat (10) is fixed at the middle position just above the semicircular rotating groove (601), the middle of the shaft seat (10) is rotatably connected to a transmission rotating rod (19), and the upper and lower ends of the transmission rotating rod (19) are respectively fixed with a wind guide plate and a tilting rod (17), one end of the tilting rod (17) passes through the semicircular rotating groove (601) and extends into the interior of the main rotating barrel (6), an arc-shaped metal connecting piece (18) is fixed to the circumferential inner wall of the main rotating barrel (6) near the semicircular rotating groove (601), and the tilting rod (17) is close to the semicircular rotating groove (601). ) is fixed with a metal contact block (172) matched with the arc-shaped metal connecting piece (18) at one end; a wear-resistant protrusion (171) is fixed with the other end of the tilting rod (17), and the circumferential outer wall of the folding rod (2) is provided with an annular edge (201) matched with the position of the wear-resistant protrusion (171), and a wear-resistant gasket (16) is fixed to the upper surface of the annular edge (201) near the root of the folding fixing rod (12); when the folding fixing rod (12) carries the wear-resistant gasket (16) and rotates to the bottom of the shaft rod seat (10), that is, the L-shaped traction frame (7), the circuit at the other end of the tilting rod (17) is connected, that is, the monitoring pump switch is turned on; The timing mechanism comprises a large water tank (26) arranged in the station house, the large water tank (26) being a rectangular box structure with an opening facing upward, and a monitoring bucket (33) being fixed to an inner wall of the large water tank (26) near an opening at one end thereof, the top of the monitoring bucket (33) being provided with an oblique opening, and one side of the oblique opening near the middle of the large water tank (26) being opened at the bottom below the other side, and an anti-overflow groove (3301) being reserved in the middle of one side of the oblique opening near the bottom opening; a leak hole being provided at the bottom of the monitoring bucket (33), and a drainage pipe (36) being inserted into the leak hole; a built-in water replenishment pump (37) being fixed to the bottom of the monitoring bucket (33), and a delivery pipe (27) being inserted into the output end of the built-in water replenishment pump (37); and a drainage end of the delivery pipe (27) being inserted into the monitoring bucket (33). The conveying volume of the conveying pipe (27) is greater than the drainage volume of the drainage pipe (36); a vertical fixed support plate (31) is fixed to the outer wall of the monitoring barrel (33) away from the anti-overflow groove (3301), and a long groove and a short groove are respectively opened on the side of the fixed support plate (31) close to the anti-overflow groove (3301), the long groove is located at the top, and a long metal plate (30) and a first-level signal connection gasket (32) are respectively embedded in the long groove and the short groove; a vertical C-shaped guide rail (35) is fixed to the bottom of the monitoring barrel (33), and a columnar floating block (34) is slidably connected in the C-shaped guide rail (35), and a top rod (28) is fixed to the top of the columnar floating block (34), and a sliding electrical contact block (29) in contact with the surface of the long metal plate (30) is provided at the top of the top rod (28).

2. A sampling port direction adjustment device for a greenhouse gas observation station according to claim 1, characterized in that: An anti-twist sliding groove is arranged inside the centripetal sliding hole, and a protrusion matching the anti-twist sliding groove is reserved on the circumferential outer wall of the touch sliding block (8).

3. The sampling port direction adjustment device for a greenhouse gas observation station according to claim 1, characterized in that: A notch is formed in the middle of one end of the wind deflector plate (13) away from the folded fixing rod (12), and a generator motor (14) is embedded in the notch.

4. A sampling port direction adjustment device for a greenhouse gas observation station according to claim 3, characterized in that: A screw hole is formed at one end of the wear-resistant protrusion (171) away from the metal contact block (172), a stud is screwed into the screw hole, and a counterweight (15) is fixed to one end of the stud away from the wear-resistant protrusion (171).

5. A sampling port direction adjustment device for a greenhouse gas observation station according to claim 4, characterized in that: A clamping spring is fixed to the top end of the push rod (28), and the lower surface of the sliding electrical contact block (29) is fixed to the top end of the clamping spring; the clamping spring is bent toward the side where the fixed support plate (31) is located.

6. A sampling port direction adjustment device for a greenhouse gas observation station according to any one of claims 4-5, characterized in that: A flow regulating valve is provided in the middle of the drainage pipe (36), and a gap is left between the bottom end of the drainage pipe (36) and the water level in the large water tank (26).

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