Gas collection device for static flux box

Abstract

The invention discloses a gas collection device for a static flux box, the gas collection device comprises an alloy disc, an L-shaped gas pipe quick joint is connected in each of regular hexagonal holes arranged at the edge of the alloy disc in an array manner, and the bottom of each L-shaped gas pipe quick joint is connected with a straight-through gas pipe joint and then is connected with a gas bag through a PVC (polyvinyl chloride) hose; an automatic rotating assembly is arranged on the back of the alloy disc, a timing gas injection device is arranged on a circular boss in the middle of the alloy disc, and a timing gas distribution device is arranged on the base below the alloy disc and used for distributing gas pumped out of the static flux box by the gas pump. The air is conveyed to an air bag after passing through a shunting hose, an L-shaped air pipe quick joint and a straight-through type air pipe joint; the automatic rotating assembly is used for rotating the timing gas injection device by a preset angle; the timing air injection device clamps the shunting hose and drives the shunting hose to be in butt joint with the next air bag after one butt joint air bag is filled with air.

Description

Technical Field

[0001] The present invention belongs to the technical field of gas sampling and analysis, and relates to a device for investigating and sampling greenhouse gases released at positions such as reservoirs, rivers, and drawdown zones, and particularly relates to a gas collection device for a static flux chamber. Background Art

[0002] In recent years, the greenhouse effect has become increasingly serious, and the impact of greenhouse gases emitted by reservoirs and rivers on the greenhouse effect has become the focus of attention and research by many scholars. Nowadays, for the study of the flux of greenhouse gases released by lakes and reservoirs, the main methods are to connect a portable greenhouse gas analyzer to a floating static flux chamber to detect the greenhouse gas flux at the water-air interface in real time; or to connect an air bag to the static flux chamber, regularly collect the gas in the static flux chamber into the air bag, and then take it back to the laboratory for gas composition analysis using a greenhouse gas analyzer. The above two methods either consume a large amount of manpower or cannot detect the gas in the static flux chamber for multiple periods and for a long time. Summary of the Invention

[0003] The present invention provides a gas collection device for a static flux chamber, which realizes the interval-period and quantitative full-automatic collection of gases in static flux chambers under different environments, reduces the consumption of human and material resources in the field experiment sampling process, and has reliable performance, precise structure and small volume, and is suitable for field handling and use.

[0004] To solve the above problems, the technical solutions provided by the present invention are as follows:

[0005] An embodiment of the present invention provides a gas collection device for a static flux chamber, including an alloy disc (1), the alloy disc (1) is connected to a base (9) through 4 cylindrical tubes (8), 80 regular hexagonal holes (1-1) are arranged in an array on the edge of the alloy disc (1), 1 L-shaped gas pipe quick connector (2) is connected in the regular hexagonal hole (1-1), and the bottom of the L-shaped gas pipe quick connector (2) is connected to a straight-through gas pipe connector (4) and then to an air bag; an automatic rotation assembly is arranged on the back of the alloy disc (1), a circular boss (7) at the middle position of the alloy disc (1) is provided with a timing gas injection device, the base (9) is provided with a timing gas shunt device, and the timing gas shunt device is used to deliver the gas in the static flux chamber to the air bag through a shunt hose via the L-shaped gas pipe quick connector (2) and the straight-through gas pipe connector (4) according to a set time; the automatic rotation assembly is used to rotate the timing gas injection device by a preset angle; the timing gas injection device clamps the shunt hose, and after 1 docking air bag is filled with gas, drives the shunt hose to dock with the next air bag.

[0006] In a preferred embodiment of the present invention, the timing gas shunt device includes a three-way gas solenoid valve (10), an air pump (11), an infinite loop type timing switch (12), and a battery (13); the three-way solenoid valve (10) is divided into an air inlet hole (10-1), a normal outlet hole (10-2), and an intermittent outlet hole (10-3); when the three-way solenoid valve (10) intermittently discharges gas when powered on, the intermittent outlet hole (10-3) is opened, and when powered off, the normal outlet hole (10-2) is opened; wherein the air inlet hole (10-1) is connected to the outlet hole of the air pump (11) through a PVC hose, the normal outlet hole (10-2) is connected to the static flux chamber, and the intermittent outlet hole (10-3) is connected to the L-type quick-connect gas pipe adapter needle of the timing gas injection device (17); the air pump (11) is powered by a battery (13) with a rated voltage of 24V; the infinite loop timing switch (12) intermittently controls the battery (13) to supply power to the three-way solenoid valve (10) through a set time, thereby changing the opening and closing conditions of the normal outlet hole (10-2) and the intermittent outlet hole (10-3).

[0007] The function of the three-way gas solenoid valve (10) is to change the gas path regularly. When the gas injection device is working, the intermittent outlet hole (10-3) is opened and the normal outlet hole (10-2) is closed. The gas in the static flux chamber enters the timing gas injection device under the action of the air pump (11). When the gas injection device is not working, the normal outlet hole (10-2) is opened and the intermittent outlet hole (10-3) is closed. The gas in the static flux chamber returns to the static flux chamber after passing through the air pump (11) and the three-way solenoid valve (10), so as to stabilize the gas pressure in the static flux chamber.

[0008] In a preferred embodiment of the present invention, the timing gas injection device includes a push rod power supply (14), an electric push rod controller (15), an electric push rod (16), an L-type quick-connect gas pipe adapter needle (17), and an injection needle (6). The electric push rod (16) is electrically connected to the push rod power supply (14) and the electric push rod controller (15). The electric push rod (16) is connected to the L-type quick-connect gas pipe adapter needle (17), and the L-type quick-connect gas pipe adapter needle (17) is sleeved at the end of the shunt hose connected to the intermittent outlet hole (10-3).

[0009] In a preferred embodiment of the present invention, the electric push rod controller (15) can divide the movement of the electric push rod (16) into four processes, namely A, B, C, and D, through programming. The A process represents the extension of the electric push rod, the B process represents the residence time after extension, the C process represents the retraction of the electric push rod, and the D process represents the residence time after retraction of the electric push rod.

[0010] In a preferred embodiment of the present invention, the automatic rotation assembly includes a stepper motor (5), a motor controller (18) and a motor driver (19). The stepper motor (5) is fixed to the back of the alloy disc (1). The motor controller (18) and the motor driver (19) are fixed to the base (9) and are both electrically connected to the stepper motor (5). The stepper motor (5) is connected to the circular boss (7) through a small hole (1-2) at the center of the alloy disc (1), so that the timing gas injection device rotates together with the circular boss (7).

[0011] In a preferred embodiment of the present invention, a gas collection device for a static flux chamber further includes a housing (20). The housing (20) is sleeved around the alloy disc (1) and the base (9). The housing (20) is a hollow cylinder with a bottom radius of 240 mm, a height of 300 mm, and a thickness of 5 mm. There is a circular small hole (20-1) at the top of the housing (20) for fixing the quickly rotating gas rotary joint connected thereto. The housing (20) is connected to the base (9) through a buckle, and a 1-mm silica gel pad is placed at the joint of the housing (20) and the base (9) to achieve the effect of sealing and waterproofing.

[0012] Compared with the prior art, the embodiment of the present invention provides a gas collection device for a static flux chamber, which has the following beneficial effects: (1) The present invention can realize multi-period, intermittent, long-time, and fully automatic gas collection from the static flux chamber and bring it back to the laboratory for analysis. Compared with the traditional method, it reduces the consumption of human and material resources in the field sampling process. (2) The present invention can be used in combination with different types of static flux chambers in different experimental sampling scenarios, such as lakes, reservoirs, drawdown zones, etc., and has a wide range of uses. (3) The structure of the present invention is delicate, the operation is stable, the overall volume is small, the replacement of the sampling gas bag is convenient and fast, and the cost is not high, which is suitable for field work sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 It is a schematic structural diagram of a gas collection device for a static flux chamber provided by an embodiment of the present application.

[0015] Figure 2 For Figure 1 an enlarged schematic diagram of some functional structures on the upper part of the alloy disc in

[0016] Figure 3 Schematic diagram of the structure of an alloy disc provided by an embodiment of the present application.

[0017] Figure 4 Schematic diagram of the structure of a circular boss provided by an embodiment of the present application.

[0018] Figure 5 Schematic diagram of the structure of a housing provided by an embodiment of the present application. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application. The "upper", "lower", "front", "rear", "left", "right", etc. used when describing the installation position or direction of the structure or components in this embodiment are based on the orientation of the given drawings. They are only for convenience of description to distinguish the relative positions of the components or directions, and do not represent the orientation when the device or components in this embodiment are in use.

[0020] As Figure 1 and Figure 2 shown, an embodiment of the present invention provides a gas collection device for a static flux chamber, including an alloy disc 1. The alloy disc 1 is connected to a base 9 through 4 cylindrical tubes 8. 80 regular hexagonal holes 1-1 are arranged in an array on the edge of the alloy disc 1. One L-shaped gas pipe quick connector 2 is connected in the regular hexagonal hole 1-1. The bottom of the L-shaped gas pipe quick connector 2 is connected to a straight-through gas pipe connector 4 and then to an air bag. An automatic rotation assembly is provided on the back of the alloy disc 1. A timing gas injection device is provided on the circular boss 7 at the middle position of the alloy disc 1. A timing gas shunt device is provided on the base 9. The timing gas shunt device is used to deliver the gas in the static flux chamber to the air bag through a shunt hose via the L-shaped gas pipe quick connector 2 and the straight-through gas pipe connector 4 according to a set time. The automatic rotation assembly is used to rotate the timing gas injection device by a preset angle; the timing gas injection device clamps the shunt hose and drives the shunt hose to dock with the next air bag after one docking air bag is filled with gas. The L-shaped gas pipe quick connector 2 is preferably an L-shaped pneumatic internal thread elbow gas pipe quick connector.

[0021] As Figure 3As shown in the figure, the alloy disc 1 is a disc with a radius of 220 mm and a thickness of 10 mm. At a distance of 200 mm from the center of the circle, 80 regular hexagonal holes 1-1 are evenly distributed along the circumference. The aperture size is the same as the hexagonal part of the L-shaped air pipe quick connector 2 and the directions are the same. There is a first circular hole 1-2 with a diameter of 10 mm at the center of the alloy disc 1, which is used as the perforation for the head of the stepping motor 5. Then, through the screw passing through the screw hole of the stepping motor itself, the stepping motor 5 is directly fixed on the back of the alloy disc 1, so that the head of the stepping motor 5 passes through the first circular hole 1-2 and is connected to the circular boss 7.

[0022] Specifically, an L-shaped air pipe quick connector 2 is installed in each regular hexagonal hole 1-1 on the alloy disc 1. The two ends of this L-shaped air pipe quick connector 2 are respectively a circlip direct-insert air pipe end and an internal thread end. When installing, ensure that the circlip direct-insert air pipe end of each connector is aligned with the center of the alloy disc 1. The internal thread end of the L-shaped air pipe quick connector is connected to the external thread end of the straight-through air pipe connector (the two ends of the straight-through air pipe connector are respectively an external thread end and a direct-insert air pipe end). After the L-shaped air pipe quick connector is connected to the straight-through air pipe connector, a PVC hose is used to connect the air bag and the straight-through air pipe connector.

[0023] Then, a silica gel plug with a suitable size is inserted into the PVC pipe 3 to play a sealing role. At a distance of 150 mm from the center of the circle on the alloy disc 1, 4 second circular holes 1-3 are evenly distributed along the circumference. The tops of 4 cylindrical pipes 8 are fixed in the 4 second circular holes 1-3. As Figure 4 shown, there is a third circular hole 7-1 with a diameter of 10 mm at the center of the circular boss 7. The head of the stepping motor 5 passes through the first circular hole 1-2 and is connected to the third circular hole 7-1.

[0024] The timed gas shunt device includes a three-way gas solenoid valve 10, an air pump 11, an infinite cycle type timing switch 12 and a storage battery 13; the three-way solenoid valve 10 is divided into an air inlet hole 10-1, a normal outlet hole 10-2 and an intermittent outlet hole 10-3. When the three-way solenoid valve 10 intermittently discharges when powered on, the intermittent outlet hole 10-3 is opened, and when powered off, the normal outlet hole 10-2 is opened; among them, the air inlet hole 10-1 is connected to the outlet hole of the air pump 11 through a PVC material hose, the normal outlet hole 10-2 is connected to the static flux chamber, and the intermittent outlet hole 10-3 is connected to the L-shaped quick-insert air pipe adapter 17 of the timed gas injection device through a shunt hose. The air pump 11 is powered by a storage battery 13 with a rated voltage of 24V. The air inlet hole of the air pump 11 is connected to the static flux chamber, and the air outlet hole of the air pump 11 is connected to the air inlet hole 10-1 of the two-way three-way solenoid valve 10 to provide power for the movement of the gas in the static flux chamber in the device of the present invention. The infinite cycle timing switch 12 intermittently controls the storage battery 13 to supply power to the three-way solenoid valve 10 through the set time, thereby changing the opening and closing conditions of the normal outlet hole 10-2 and the intermittent outlet hole 10-3.

[0025] The function of the three-way gas solenoid valve 10 is to change the gas passage in a timely manner. When the gas injection device is working, the intermittent gas outlet 10-3 is opened and the normal gas outlet 10-2 is closed. The gas in the static flux box enters the timed gas injection device under the action of the air pump 11. When the gas injection device is not working, the normal gas outlet 10-2 is opened and the intermittent gas outlet 10-3 is closed. After passing through the air pump 11 and the three-way gas solenoid valve 10, the gas returns to the static flux box to stabilize the gas pressure in the static flux box.

[0026] like Figure 1 and Figure 2 As shown, the timed gas injection device includes a push rod power supply 14, an electric push rod controller 15, an electric push rod 16, an L-type quick-insert air pipe adapter needle device 17 and an injection needle 6. The electric push rod 16 is electrically connected to the push rod power supply 14 and the electric push rod controller 15. The electric push rod 16 is connected to the L-type quick-insert air pipe adapter needle device 17. The L-type quick-insert air pipe adapter needle device 17 is sleeved on the end of the diversion hose connected to the intermittent air outlet 10-3. The reciprocating motion of the electric push rod 16 drives the injection needle 6 to penetrate the rubber plug on each L-type air pipe quick connector, thereby injecting gas into each air bag. The electric push rod controller 15 can divide the movement of the electric push rod 16 into four processes A, B, C, and D by writing a program, wherein the A process represents the extension of the electric push rod, the B process represents the dwell time after the extension, the C process represents the retraction of the electric push rod, and the D process represents the dwell time after the retraction of the electric push rod.

[0027] The L-type quick-insert air pipe adapter needle device 17 of this embodiment is an L-type adapter, one end of which is a spring-type air pipe quick-insert connector, and the other end is a connection end of the gas injection needle 6. The gas injection needle 6 is fixed on the L-type quick-insert air pipe adapter needle device 17. The front end of the electric push rod 16 is fixed on the L-type quick-insert air pipe adapter needle device 17, and the gas injection needle 6 is then fixed on the L-type quick-insert air pipe adapter needle device 17. The extension and retraction strokes of the electric push rod 16 drive the L-type quick-insert air pipe adapter needle device 17 to reciprocate back and forth. The push rod power supply 14, the electric push rod controller 15, and the electric push rod 16 are all fixed on the circular boss 7. When the stepper motor 5 drives the circular boss 7 to rotate, the above components rotate with the circular boss 7, so as to inject gas into each air bag on the alloy disc 1.

[0028] The automatic rotation assembly includes a stepper motor 5, a motor controller 18 and a motor driver 19. The stepper motor 5 is fixed to the back of the alloy disc 1 and is powered by a battery 13. The motor controller 18 and the motor driver 19 are fixed to the base 9 and are both electrically connected to the stepper motor 5. The stepper motor 5 is connected to the circular boss 7 through the small hole 1-1 at the center of the alloy disc 1, so that the timing gas injection device rotates with the circular boss 7.

[0029] The stepper motor 5, the motor controller 18, and the motor driver 19, as a whole, drive the circular boss 7 to move and stop according to the set time. Among them, the motor controller 18 controls parameters such as the rotation direction, angle, and speed of the stepper motor 5, and the motor driver 19 then converts the instructions sent by the controller into electrical signals that can be controlled by the stepper motor 5. The motor driver 19 receives pulse signals. For each received pulse, the motor driver 19 gives a pulse to the stepper motor 5 to make the stepper motor 5 rotate through a fixed angle. The motor controller 18 controls the rotation state of the stepper motor 5 by cooperating with the motor driver 19. Thus, the circular boss 7 can rotate a set angle and stay for the corresponding time according to the requirements. In this embodiment, the diameter of the circular boss 7 is 100 mm. After the head of the stepper motor 5 passes through the alloy disk 1, it is then connected to the circular boss 7 with a hole in the center. The head of the stepper motor 5 rotates a set angle and drives the circular boss 7 to rotate a certain angle.

[0030] As Figure 5 shown, a gas collection device for a static flux chamber further includes a housing 20, and the housing 20 is sleeved around the alloy disk 1 and the base 9. The housing 20 has a structure of a bottomless hollow cylinder and a fast-rotating air swivel joint. The housing 20 is connected to the base 9 by a buckle, achieving the effect of sealing and waterproofing. In this embodiment, the housing is a hollow cylinder with a bottom radius of 240 mm, a height of 300 mm, and a thickness of 5 mm. There is a circular small hole 20-1 at the top of the housing 20 for fixing the connected fast-rotating air swivel joint.

[0031] The whole process of the device of the present invention for collecting gas in a static flux chamber is as follows: After transporting the gas collection device to the sampling point, arrange the static flux chamber, connect the air outlet of the static flux chamber and the intake end of the air pump 11 with a PVC pipe, and connect the air inlet of the static flux chamber and the normal outlet hole 10-2 of the three-way solenoid valve 10. After successively connecting the air bag to the straight insertion end of the straight-through air pipe joint on the alloy disc 1, open the air valve of the air bag, then turn on the 24V battery 13 and the push rod power supply 14. The air pump 11 continuously operates to extract gas from the static flux chamber and introduce it into the three-way solenoid valve 10. The infinite cycle timer switch 12 operates to intermittently control the battery 13 to supply power to the three-way solenoid valve 10, causing the gas passage of the three-way solenoid valve 10 to change. When the three-way solenoid valve 10 is not powered on, the normal outlet hole 10-2 is open and the intermittent outlet hole 10-3 is closed. The gas extracted by the air pump 11 from the static flux chamber returns to the static flux chamber after passing through the three-way solenoid valve 10, keeping the gas in the static flux chamber stable. At this time, the electric push rod 16 in the timing gas injection device starts to execute the extension instruction A under the control of the electric push rod controller 15, driving the gas injection needle 6 to pierce the silica gel plug at the end of the PVC pipe 3. When the electric push rod 16 completes the instruction A, the infinite cycle timer switch 12 controls the two-way three-way solenoid valve 10 to be powered on. At this time, the normal outlet hole 10-2 is closed and the intermittent outlet hole 10-3 is open. The gas passes through the three-way solenoid valve 10 and enters the shunt hose connected to the intermittent outlet hole 10-3, and then enters the gas injection needle 6 to start injecting gas into the first air bag. The gas injection duration is the same as the pause time B after the electric push rod controller 15 controls the electric push rod 16 to extend. After the gas injection into the first air bag is completed and the first sampling is over, the electric push rod controller 15 issues an instruction C to the electric push rod 16, and the electric push rod 16 drives the gas injection needle 6 to retract; at the same time, the infinite cycle timer switch 12 controls the battery 13 to stop supplying power to the three-way solenoid valve 10, the normal outlet hole 10-2 is open, and the intermittent outlet hole 10-3 is closed. The gas extracted by the air pump 11 returns to the static flux chamber to form a passage to maintain the air pressure stability in the static flux chamber. At this time, the circular boss 7 with a hole in the center starts to move under the drive of the stepping motor 5, so that the gas injection needle 6 accurately moves in front of the rubber plug of the next PVC pipe 3 corresponding to the air bag. After waiting for a period of time, the gas concentration in the static flux chamber changes, and the retraction residence time D of the electric push rod 16 ends. The electric push rod 16 starts to drive the gas injection needle 6 to repeat the extension instruction A, repeating the above steps to start injecting gas into the second air bag and performing the second sampling in the second time period. This process is cycled until the sampling is completed. After the sampling is completed, retrieve the device, open the device shell, close the air valve of the air bag, and then remove the air bag and take it back to the laboratory for analysis of the gas in the air bag using a greenhouse gas analyzer.

[0032] Details of various components preferably purchased in the present invention are as follows:

[0033] The L-shaped air tube quick connector 2 was purchased from Wenzhou Laize Pneumatic Technology Co., Ltd., and the model is PLF6-M5. The rubber plug was purchased from Suzhou Shunhang Rubber and Plastic Products Co., Ltd., and the model is TS-4.2 short type. The straight-through air tube quick connector was purchased from AirTAC (China) Co., Ltd., and the model is PC6M5. The three-way gas solenoid valve 10 was purchased from Shanghai Xingchen Pneumatic Co., Ltd., and the model is VT307-5G1-02 DC24V. The air pump 11 was purchased from Dongguan Zhirong Vacuum Equipment Co., Ltd., and the model is ZR370-02PM 24V. The infinite loop type timing switch 12 was purchased from Shangde United Electric Group, and the model is 24V infinite loop switch.

[0034] The push rod power supply 14, the electric push rod controller 15, and the electric push rod 16 were all purchased from Xiamen Shaoteng Technology Co., Ltd., and the models are 12V 3000mAh lithium battery, 12V-70N telescopic timing controller, and 30mm stroke with double-ear type respectively. The L-shaped quick-insert air tube adapter needle 17 was purchased from Jiajing Hardware Business Department in Jiaxing Zhong'an Metal Hardware Market, and the model is 90-degree quick-insert straight-twist type for inserting an air tube with an outer diameter of 6MM. The injection needle 6 was purchased from Shanghai Kantele Enterprise Development Group Co., Ltd., and the model is 0.7mm*32mm.

[0035] The stepper motor 5, the motor controller 18, and the motor driver 19 were all purchased from Shenzhen Yueyu Electronic Technology Co., Ltd., and the models are 57 motor (3NM), YMS8-D, and DM556 driver respectively. The quick-rotating air swivel joint was purchased from Chaohui Automation Components Business in Xinqiao, Bao'an District, Shenzhen, and the model is right-angle elbow pipe with a diameter of 6mm. The PVC hoses used in the whole device were all purchased from Zhejiang Zhongcai Pipeline Technology Co., Ltd., and the models are with an outer diameter of 6mm and an inner diameter of 4mm. The center-holed disc 17, the bottomless hollow cylinder 18, the 4 cylindrical pipes 8 with internal threaded holes at both ends, and the base 9 are all made of alloy material, which can reduce the overall weight of the device and facilitate field handling and use.

[0036] Although the present invention has been disclosed above with preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those of ordinary skill in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope defined in the claims.

Claims

1. A gas collection device for a static flux chamber, characterized in that, It includes an alloy disc (1), which is connected to a base (9) through four cylindrical tubes (8). There are 80 regular hexagonal holes (1-1) arranged in an array at the edge of the alloy disc (1). One L-shaped air tube quick connector (2) is connected inside each regular hexagonal hole (1-1). The bottom of the L-shaped air tube quick connector (2) is connected to a straight-through air tube connector (4) and then to an airbag. An automatic rotation assembly is provided on the back of the alloy disc (1). A circular boss (7) at the middle position of the alloy disc (1) is provided with a timing air injection device. The base (9) is provided with a timing gas shunt device, which is used to deliver the gas in the static flux chamber to the airbag through a shunt hose via the L-shaped air tube quick connector (2) and the straight-through air tube connector (4) according to the set time. The automatic rotation assembly is used to rotate the timing air injection device by a preset angle. The timing air injection device clamps the shunt hose and drives the shunt hose to dock with the next airbag after one docking airbag is filled with air.

2. The gas collection device for a static flux chamber according to claim 1, wherein, The timing gas shunt device includes a three-way gas solenoid valve (10), an air pump (11), an infinite cycle type timing switch (12) and a storage battery (13). The three-way solenoid valve (10) is divided into an air inlet hole (10-1), a normal outlet hole (10-2) and an intermittent outlet hole (10-3). When the three-way solenoid valve (10) intermittently discharges gas when powered on, the intermittent outlet hole (10-3) opens, and when powered off, the normal outlet hole (10-2) opens. The air inlet hole (10-1) is connected to the outlet hole of the air pump (11) through a PVC material hose. The normal outlet hole (10-2) is connected to the static flux chamber, and the intermittent outlet hole (10-3) is connected to the L-shaped quick plug air tube adapter (17) of the timing air injection device. The air pump (11) is powered by a storage battery (13) with a rated voltage of 24V. The infinite cycle timing switch (12) intermittently controls the storage battery (13) to supply power to the three-way solenoid valve (10) according to the set time, thereby changing the opening and closing conditions of the normal outlet hole (10-2) and the intermittent outlet hole (10-3). The function of the three-way gas solenoid valve (10) is to change the gas path regularly. When the air injection device is working, the intermittent outlet hole (10-3) opens and the normal outlet hole (10-2) closes. The gas in the static flux chamber enters the timing air injection device under the action of the air pump (11). When the air injection device is not working, the normal outlet hole (10-2) opens and the intermittent outlet hole (10-3) closes. The gas in the static flux chamber returns to the static flux chamber after passing through the air pump (11) and the three-way solenoid valve (10), so as to stabilize the gas pressure in the static flux chamber.

3. The gas collection device for a static flux chamber according to claim 2, characterized in that, The described timing gas injection device includes a push rod power supply (14), an electric push rod controller (15), an electric push rod (16), an L-shaped quick-insert gas pipe adapter needle device (17), and an injection needle (6). The electric push rod (16) is electrically connected to the push rod power supply (14) and the electric push rod controller (15). The electric push rod (16) is connected to the L-shaped quick-insert gas pipe adapter needle device (17), and the L-shaped quick-insert gas pipe adapter needle device (17) is sleeved on the end of the shunt hose connected to the intermittent air outlet (10-3).

4. The gas collection device for a static flux chamber according to claim 3, characterized in that, The electric push rod controller (15) can divide the movement of the electric push rod (16) into four processes, namely A, B, C, and D, through programming. Among them, process A represents the extension of the electric push rod, process B represents the residence time after extension, process C represents the retraction of the electric push rod, and process D represents the residence time after the electric push rod retracts.

5. The gas collection device for a static flux chamber according to claim 3, characterized in that, The described automatic rotation assembly includes a stepping motor (5), a motor controller (18), and a motor driver (19). The stepping motor (5) is fixed on the back of the alloy disc (1). The motor controller (18) and the motor driver (19) are fixed on the base (9) and are both electrically connected to the stepping motor (5). The stepping motor (5) is connected to the circular boss (7) through the small hole (1-2) at the center of the alloy disc (1), so that the timing gas injection device rotates together with the circular boss (7).

6. The gas collection device for a static flux chamber according to claim 1, wherein, It also includes a housing (20). The housing (20) is sleeved on the periphery of the alloy disc (1) and the base (9). The housing (20) is a hollow cylinder with a bottom radius of 240 mm, a height of 300 mm, and a thickness of 5 mm. There is a circular small hole (20-1) at the top of the housing (20) for fixing the quickly rotating air swivel joint connected thereto. The housing (20) is connected to the base (9) through a buckle, and a 1-mm silicone pad is placed at the joint of the housing (20) and the base (9) to achieve the effect of sealing and waterproofing.

Images