Gas collection device and method for subway carbon emission monitoring

Abstract

The invention relates to a carbon emission monitoring device, and discloses a gas collection device in a carbon emission monitoring process, the device comprises a shell and an upper cover, and a hanging assembly is arranged on the side surface of the shell; a gas cylinder assembly is arranged in the shell and comprises a vertically-arranged gas cylinder, and a plugging valve used for plugging a gas inlet is arranged at the gas inlet of the gas cylinder. The upper cover is provided with an air inlet assembly, and the air inlet assembly comprises a communicating air inlet pipe which can extend into the air inlet and is used for opening the plugging valve; a piston assembly used for sucking air into the gas cylinder through a communicating gas inlet pipe is arranged in the gas cylinder, and a driving assembly used for driving the piston assembly is arranged in the shell and located at the bottoms of the multiple cavities. Through integrated design, air at all positions of the subway station can be actively collected, and the device can be flexibly arranged in different scenes, is flexible to use and convenient to install, and can realize collection of a plurality of samples according to needs.

Description

TECHNICAL FIELD

[0001] The present application relates to a carbon emission monitoring device, in particular to a gas collection device in the carbon emission monitoring process. BACKGROUND

[0002] As a convenient, clean and efficient way of travel, subway is an important part of building green cities and developing metropolitan green transportation. Carbon emission reduction brought by subway construction is part of the external benefits of rail transit, and the assessment of carbon footprint is crucial to identifying and mitigating carbon emissions.

[0003] In the process of carbon footprint assessment, a good carbon emission monitoring management system should be established to facilitate the analysis and evaluation of building carbon emission status. During the carbon emission monitoring and prediction analysis of subway stations, carbon emission gases need to be collected and analyzed from various places in the subway station.

[0004] The current common collection and analysis method is to set up corresponding carbon emission monitoring equipment at the required collection location, which can achieve integrated collection and analysis. However, such equipment is generally large cabinet-type equipment, which lacks flexibility in use, and it is difficult to place such equipment due to the influence of the construction environment during the construction of subway stations.

[0005] Therefore, it is necessary to provide a device that can actively collect air from various places in the subway station and be flexibly used in different scenarios for further carbon emission analysis. SUMMARY

[0006] The present application provides a collection device and method for subway carbon emission monitoring to solve the problems of gas collection in the carbon emission monitoring process in the prior art.

[0007] To solve the above technical problems, the present application solves the problems by the following technical solutions: The gas collection device for subway carbon emission monitoring includes a device body, the device body includes a shell and an upper cover, and a hanging assembly is arranged on the side surface of the shell; The shell forms a plurality of cavities inside, and each cavity is provided with a gas cylinder assembly, the gas cylinder assembly includes a vertically arranged gas cylinder, and a blocking valve is arranged at the gas inlet of the gas cylinder for blocking the gas inlet; The upper cover is provided with an air inlet assembly corresponding to the gas cylinder assembly, the air inlet assembly includes a communication air inlet pipe that can extend into the air inlet for opening the blocking valve; The gas cylinder is provided with a piston assembly inside for inhaling air into the gas cylinder through the communication air inlet pipe, and the shell is provided with a driving assembly at the bottom of the plurality of cavities for driving the piston assembly.

[0008] Preferably, the hanging assembly includes an L-shaped hanging plate with an opening facing downward, and a magnet is provided on the outer surface of the hanging plate. The arrangement of the hanging assembly enables the device to be flexibly placed in different environments and locations during the construction of a subway station.

[0009] Preferably, the blocking valve comprises a valve body threadedly connected to the gas inlet of the gas cylinder, a valve core is provided in the valve body, the valve core comprises a partition provided on the inner wall of the valve body, a gas through hole is formed in the middle of the partition, and further comprises a blocking plate capable of pressing against the lower part of the gas through hole and blocking the gas through hole, and a valve core spring for pressing the blocking plate against the gas through hole; The end portion of the air inlet pipe connected to the air inlet is provided with a push pin capable of passing through the air through hole, and the push pin can push the blocking plate away from the air through hole from top to bottom.

[0010] Preferably, the air intake assembly includes an air intake cylinder body mounted on the outer end surface of the upper cover, the connecting air intake pipe is coaxially arranged with the air intake cylinder body and can slide up and down along the inner wall of the air intake cylinder body, and the air intake cylinder body is further provided with a compression spring for pushing the connecting air intake pipe downward; The upper end of the valve body is formed with a valve port through which the connecting air intake pipe extends. A first limiting mechanism is provided on the sidewall of the valve port, which limits the axial movement of the connecting air intake pipe. This limiting mechanism includes a first limiting steel ball connected to the sidewall of the valve body via a spring and arranged transversely thereto. A steel ball limiting groove is provided on the sidewall at the end of the connecting air intake pipe, which cooperates with the first limiting steel ball. The first limiting steel ball can be disengaged from the steel ball limiting groove under the action of an external axial force on the connecting air intake pipe. The compression spring and the first limiting steel ball provide a stable installation environment for the connecting air intake pipe within the valve body, ensuring its operational stability.

[0011] Preferably, the piston assembly includes a piston rod and a piston plugged into the end of the piston rod, and the outer wall of the piston rod is provided with an external thread for cooperating with the drive assembly; The drive assembly includes a drive motor, a drive wheel connected to the output shaft of the drive motor, and a driven wheel that corresponds to the gas cylinder assembly one by one and is engaged with the drive wheel. It also includes a drive sleeve coaxially arranged with the piston rod, and a drive tooth that is engaged with the driven wheel is installed on the drive sleeve. The inner surface of the drive sleeve is provided with an internal thread that cooperates with the external thread of the piston rod. The piston rod can move up and down along the axis of the drive sleeve under the rotation of the drive sleeve.

[0012] Preferably, the gas cylinder includes a bottle body, an air inlet is provided at the upper end of the bottle body, a bottom cover with a central opening is connected to the lower end of the bottle body, a piston rod passes through the opening and is spaced apart from the inner wall of the opening, an elongated limiting groove is provided axially on the outer wall of the piston rod, and a limiting protrusion is provided on the side wall of the opening that can extend into the elongated limiting groove, and the limiting protrusion can move up and down relative to the elongated limiting groove. The cooperation between the limiting protrusion and the elongated limiting groove can realize rotational limitation between the piston rod and the bottle body, thereby preventing the piston rod from rotating relative to the bottle body and thereby realizing the up and down movement of the piston rod.

[0013] Preferably, the plurality of chambers are evenly arranged around the center line of the housing in the housing, the upper cover includes a cover body and a cover plate, a limit mechanism installation cavity is provided on the upper end surface of the cover body, a second limit mechanism is provided inside the limit mechanism installation cavity for limiting the axial operation of the connected intake pipe, the limit mechanism installation cavity includes an annular groove and intake pipe installation holes arranged at intervals along the circumference of the annular groove and used to install the connected intake pipe, and a first clamping groove and a second clamping groove are provided on one side of the outer side wall of the connected intake pipe at intervals up and down; An arc-shaped spring is installed within the annular groove. A second stopper steel ball is attached at each end of the arc spring, allowing it to extend to the intake pipe mounting hole under elastic force. The second stopper steel ball at one end of the arc spring can be snapped into either the first or second slot connecting the intake pipes. The first slot provides a pre-installed position for multiple connected intake pipes, while the second slot provides an open position for the intake ports, ensuring stable and orderly operation.

[0014] Preferably, a third retaining groove, higher than the first retaining groove, is provided on the other side of the outer wall of the air intake pipe. A second retaining ball at the other end of the arc spring can be inserted into the third retaining groove connected to the air intake pipe. When the second retaining ball is inserted into the third retaining groove, the second retaining ball in the second retaining groove of the adjacent air intake pipe is released. The cooperation between the arc spring and the third retaining groove enables the air intakes of multiple gas cylinders to be automatically opened sequentially.

[0015] Preferably, a battery mounting seat is fixed inside the shell and on the upper cover, and the battery mounting seat can be pulled out of the shell from the upper cover. A battery mounting position is provided at the battery mounting seat, and a power supply battery for powering the driving component can be installed at the battery mounting position.

[0016] The gas collection method for subway carbon emission monitoring is based on the aforementioned gas collection device for subway carbon emission monitoring for gas collection.

[0017] The present invention has significant technical effects due to the adoption of the above technical solutions: Through integrated design, the present invention can actively collect air from various locations in subway stations and can be flexibly placed in different scenarios. It is flexible to use and easy to install, and can collect multiple samples as needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of embodiment 1 of the present invention.

[0019] Figure 2 yes Figure 1 Top view of .

[0020] Figure 3 yes Figure 2 Sectional view of the middle AA plane.

[0021] Figure 4 yes Figure 3 A partial enlarged view of part A.

[0022] Figure 5 yes Figure 3 A partial enlarged view of part B.

[0023] Figure 6 yes Figure 3 A partial enlarged view of part C in the middle.

[0024] Figure 7 Schematic diagram of the internal structure of the cover body in Example 1 of the present invention.

[0025] Figure 8 Schematic diagram of the connection between the air intake assembly and the gas cylinder assembly in Example 1 of the present invention.

[0026] Figure 9 yes Figure 8 sectional view of .

[0027] Figure 10 yes Figure 9 Schematic diagram of the air intake assembly structure.

[0028] Figure 11 yes Figure 9 Schematic diagram of the structure of the gas cylinder assembly DETAILED DESCRIPTION

[0029] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0030] Example 1 This embodiment provides a gas collection device for monitoring subway carbon emissions, such as Figures 1-11 As shown, the device includes a body, which includes a shell 1 and an upper cover 2, wherein the upper cover 2 is buckled on the upper end of the shell 1 and fixed by bolts; A hanging component 3 is provided on the side of the shell 1. The hanging component 3 includes an L-shaped hanging plate 301 with an opening downward. A magnet 302 is provided on the outer surface of the hanging plate 301. During use, it can be hung on the collector through the hanging plate 301, or on some on-site equipment, or adsorbed on the on-site equipment through the magnet 302. The installation position is relatively flexible and there are not too many requirements for the on-site use environment.

[0031] like Figure 1-3 As shown, the shell 1 is a cylindrical shell 1, and a plurality of chambers 101 are formed inside by a partition 502. A gas cylinder assembly 4 is provided in each chamber 101, and the gas cylinder assembly 4 includes a vertically arranged gas cylinder 401, and a blocking valve 5 is provided at the air inlet 402 of the gas cylinder 401 for blocking the air inlet 402; an air intake assembly 6 corresponding to the gas cylinder assembly 4 is provided on the upper cover 2, and the air intake assembly 6 includes a connecting air inlet pipe 601 that can be extended into the air inlet 402 to open the blocking valve 5, wherein the air inlet 402 can be opened only when the connecting air inlet pipe 601 is inserted into the valve body 501, and when the connecting air inlet pipe 601 is pulled out of the valve body 501, the blocking valve 5 automatically blocks the air inlet 402.

[0032] like Figure 8 、 Figure 9 as well as Figure 11 As shown, the blocking valve 5 includes a valve body 501 threadedly connected to the air inlet 402 of the gas cylinder 401, and a valve core is provided in the valve body 501. The valve core includes a partition 502 arranged on the inner wall of the valve body 501, and an air through hole 503 is formed in the middle of the partition 502. It also includes a blocking plate 504 that can be pressed against the lower part of the air through hole 503 and block the air through hole 503, and a valve core spring 505 for pressing the blocking plate 504 against the air through hole 503. Among them, an annular connecting portion is provided on the outer surface of the upper end plate of the gas cylinder 401, and an internal thread for connecting to the valve body 501 is provided on the inner side wall of the annular connecting portion. An air inlet 402 is formed in the middle of the upper end plate of the gas cylinder 401. The bottom of the valve core spring 505 is pressed against the outer surface of the upper end plate of the gas cylinder 401, and the upper end is pressed against the lower surface of the blocking plate 504. The blocking plate 504 is provided with a plurality of air passages that are staggered with the air through holes 503. The valve core spring 505 presses the blocking plate 504 against the partition 5 02, the sealing plate 504 on the lower end surface blocks the air through hole 503, and the end of the air inlet pipe 601 toward the air inlet 402 is provided with a pushing pin 602 that can pass through the air through hole 503. The pushing pin 602 can push the sealing plate 504 away from the air through hole 503 from top to bottom. When the pushing pin 602 moves downward to overcome the elastic force of the pushing pin 505 and push the sealing plate 504 away from the partition 502, the air flow can pass through the air through hole 503 and the air passage into the interior of the gas cylinder 401.

[0033] Among them, such as Figure 10As shown, the air intake assembly 6 includes an air intake cylinder 603 installed on the outer end surface of the upper cover 2. A fixed ring is provided on the outer end surface of the upper cover 2, and an internal thread is provided on the inner wall of the fixed ring. The air intake cylinder 603 is connected to the fixed ring through the external thread provided on its outer wall.

[0034] The connecting air intake pipe 601 is coaxially arranged with the air intake cylinder 603 and can slide up and down along the inner wall of the air intake cylinder 603. A compression spring 604 is further provided in the air intake cylinder 603 for pushing the connecting air intake pipe 601 downward. A spring seat is provided on the outer wall of the connecting air intake pipe 601. The compression spring 604 is sleeved on the connecting air intake pipe 601, with the upper end thereof abutting against the upper end surface of the air intake cylinder 603 and the lower end thereof abutting against the spring seat, thereby pressing the connecting air intake pipe 601 toward the gas cylinder 401. A valve port 506 is formed at the upper end of the valve body 501 for the connecting air intake pipe 601 to extend into. A first limiting mechanism is provided on the side wall of the valve port 506, which can limit the axial operation of the connecting air intake pipe 601. The limiting mechanism includes a first limiting steel ball 507 connected to the side wall of the valve body 501 by a spring and arranged laterally. A steel ball limiting groove 605 cooperating with the first limiting steel ball 507 is provided on the side wall of the end of the connecting air intake pipe 601. The first limiting steel ball 507 can be separated from the steel ball limiting groove 605 under the action of an axial external force of the connecting air intake pipe 601.

[0035] During installation, first install the upper end of the connecting intake pipe 601 into the intake cylinder body 603, and then thread the intake cylinder body 603 to the fixed ring. During the threaded screwing process, the compression spring 604 inside it will provide a pre-tightening force to the intake connecting pipe, so that the intake connecting pipe moves further downward, and moves down to the lower end of the intake connecting pipe and is inserted into the valve port 506 of the valve body 501. At this time, the pre-connection between the intake connecting pipe and the valve body 501 is completed.

[0036] During operation, the connecting air intake pipe 601 is pushed downward to squeeze the first limiting steel ball 507, causing it to overcome the spring force and retract. When the first limiting steel ball 507 is stuck in the steel ball limiting groove 605, the air intake connecting pipe is inserted into the valve body 501. In this process, the pushing pin 602 at the end of the air intake connecting pipe will also push the blocking plate 504 to open.

[0037] like Figure 9 As shown, in this embodiment, a piston assembly 7 is provided inside the gas cylinder 401 for sucking air into the gas cylinder 401 through the connecting air inlet pipe 601, and a driving assembly 8 for driving the piston assembly 7 is provided inside the shell 1 and at the bottom of the multiple chambers 101.

[0038] The piston assembly 7 includes a piston rod 701 and a piston 702 inserted into the end of the piston rod 701. The outer wall of the piston rod 701 is provided with an external thread for cooperating with the drive assembly 8. In this embodiment, the piston 702 is a rubber elastic part, and a slot is provided therein for inserting the end of the piston rod 701. The size of the slot can be slightly smaller than the size of the piston rod 701 so that the piston 702 and the piston rod 701 can have an interference fit. The slot can be a T-shaped slot with a T-shaped cross-section opened in the piston 702, and the elastic deformation of the piston 702 is used to realize the connection and separation between it and the piston rod 701. When in the connected state, the slot wall is squeezed on the wall of the piston rod 701, and the piston 702 and the piston rod 701 can be separated under the action of an axial external force of corresponding magnitude.

[0039] The drive assembly 8 includes a drive motor 801, a drive wheel 802 connected to the output shaft of the drive motor 801, and a driven wheel 803 that corresponds one-to-one to the gas cylinder assembly 4 and is engaged with the drive wheel 802. It also includes a drive sleeve 804 coaxially arranged with the piston rod 701, and a drive tooth 805 is installed on the drive sleeve 804 to engage with the driven wheel 803.

[0040] The specific shell 1 is provided with a motor chamber and a transmission chamber separated by a partition 502. The driving motor 801 is arranged in the motor chamber, and the driving wheel 802, the driven wheel 803 and the driving sleeve 804 are all arranged in the transmission chamber. The driving wheel 802 is located at the center of the transmission chamber, and the driven wheels 803 are evenly arranged around the driving wheel 802. The motor shaft of the driving motor 801 drives the driving wheel 802 to rotate, and the driving wheel 802 drives each driven wheel 803 to rotate, and each driven wheel 803 drives the corresponding driving sleeve 804 to rotate. The inner surface of the driving sleeve 804 is provided with an internal thread that cooperates with the external thread of the piston rod 701. The piston rod 701 can move up and down along the axial direction of the driving sleeve 804 under the rotation of the driving sleeve 804.

[0041] Among them, the gas cylinder 401 includes a bottle body 403, the air inlet 402 is arranged at the upper end of the bottle body 403, the lower end of the bottle body 403 is connected to a bottom cover 404 with a central opening, the piston rod 701 passes through the opening and leaves a distance between it and the inner wall of the opening, and a long limiting groove 702 is axially provided on the outer wall of the piston rod 701, and a limiting protrusion 405 that can extend into the long limiting groove 702 is provided on the side wall of the opening. The limiting protrusion 405 can move up and down relatively in the long limiting groove 702, and the cooperation between the limiting protrusion 405 and the long limiting groove 702 can realize the rotation limitation between the piston rod 701 and the bottle body 403, thereby preventing the piston rod 701 from rotating relative to the bottle body 403.

[0042] In this embodiment, multiple chambers 101 are evenly arranged around the center line of the shell 1 in the shell 1, and the upper cover 2 includes a cover body 201 and a cover plate 202. A limiting mechanism installation cavity 203 is provided on the upper end surface of the cover body 201. A second limiting mechanism for limiting the axial operation of the connecting air intake pipe 601 is provided inside the limiting mechanism installation cavity 203. The limiting mechanism installation cavity 203 includes an annular groove 204 and an air intake pipe installation hole 205 arranged at intervals along the circumferential direction of the annular groove 204 and used to install the connecting air intake pipe 601. A first card groove 606 and a second card groove 607 are provided on one side of the outer wall of the connecting air intake pipe 601 at intervals. Figure 7 As shown; An arc spring 206 is provided in the annular groove 204, and both ends of the arc spring 206 are provided with second limiting steel balls 207 that can extend to the intake pipe mounting hole 205 under the action of elastic force. The second limiting steel ball 207 at one end of the arc spring 206 can be clamped into one of the first clamping groove 606 or the second clamping groove 607 connected to the intake pipe 601.

[0043] The arc spring 206 in this embodiment can provide a large elastic force and can provide a large clamping force on the connecting air intake pipe 601. Under the action of this clamping force, it can be ensured that the connecting air intake pipe 601 can only move under the action of a large axial force, and it cannot be axially pulled only under the action of the gravity of the gas cylinder 401, the blocking valve 5 and / or the axial pressure of the compression spring 604. In order to further ensure the clamping force of the arc spring 206, in this embodiment, the gas cylinder 401, the connecting air intake pipe 601 and the blocking valve 5 can all be made of lightweight plastic parts.

[0044] In addition, in this embodiment, a battery mounting seat 9 is fixed inside the shell 1 and on the upper cover 2. The battery mounting seat 9 can pull out the shell 1 from the upper cover 2. A battery mounting position 901 is provided at the battery mounting seat 9. The power supply battery for powering the driving component 8 can be installed at the battery mounting position 901.

[0045] Example 2 The same as Example 1, except that in this embodiment, the other side of the outer side wall connected to the air intake pipe 601 is provided with a third slot 608 whose height is higher than the first slot 606; the second limiting steel ball 207 at the other end of the arc spring 206 can be inserted into the third slot 608 connected to the air intake pipe 601, and when the second limiting steel ball 207 is inserted into the third slot 608, the second limiting steel ball 207 in the second slot 607 of the adjacent connected air intake pipe 601 is released.

[0046] The setting of the third clamping groove 608 can realize the automatic downward movement of the adjacent connecting air inlet pipe 601, that is, automatically open the gas cylinder assembly 4. In the specific working process, when the gas cylinder 401 connected to the air inlet pipe 601 is pressed down and is full, its piston rod 701 moves to the lowest end. At this time, the driving motor 801 will continue to operate, driving the piston rod 701 to move further downward, and the piston 702 will act on the gas cylinder assembly 4, so that the gas cylinder assembly 4 drives the connecting air inlet pipe 601 to overcome the clamping force of the arc spring 206 and move downward until the second limit The steel ball 207 is stuck in the third slot 608. At this time, the entire arc spring 206 moves toward the connecting air inlet pipe 601, so that the second limiting steel ball 207 at the other end of the arc spring 206 is disengaged from the second slot 607 of the adjacent connecting air inlet pipe 601. At this time, the adjacent connecting air inlet pipe 601 can be moved down to the relative position of the second limiting steel ball 207 and the first slot 606 under the action of the compression spring 604, according to the connection between the connecting air inlet pipe 601 and the valve body 501, and the opening of the blocking plate 504.

[0047] In this embodiment, the clamping force increased by the arc spring 206 needs to be smaller than the axial limiting force of the first limiting mechanism on the connecting air intake pipe 601 and the connection force between the piston 702 and the piston rod 701, so as to ensure that the various parts will not separate when the piston rod 701 pulls the gas cylinder assembly 4 downward, thereby ensuring the smooth downward movement of the connecting air intake pipe 601.

[0048] Example 3 This embodiment provides a gas collection method for subway carbon emission monitoring, which performs gas collection based on the gas collection device for subway carbon emission monitoring in Example 1.

[0049] The gas collection process is as follows: Step S1: first place the collection device at the corresponding sampling location; In the initial state, the bottom of each communicating air inlet pipe 601 is located at the valve port 506 of the corresponding valve body 501. At this time, the second limiting steel ball 207 in the cover body 201 is engaged in the second clamping groove 607 at the lower end of the communicating air inlet pipe 601. Step S2, pressing down one of the connecting air inlet pipes 601; The connecting air inlet pipe 601 is inserted into the valve body 501, and the connecting air inlet pipe 601 and the valve body 501 are plugged together. At this time, the first limiting steel ball 507 is inserted into the steel ball limiting groove 605, the pushing pin 602 at the end of the connecting air inlet pipe 601 pushes the blocking plate 504 away, and the second limiting steel ball 207 in the cover body 201 is inserted into the first retaining groove 606 in the middle of the connecting air inlet pipe 601; Step S3: The drive motor 801 is turned on during a predetermined time period, and the gas cylinder 401 starts to inhale gas under the action of the drive motor 801; The driving motor 801 is started in the process to drive the driving wheel 802 to rotate, the driving wheel 802 drives the driving sleeve 804 to rotate through the driven wheel 803, the driving sleeve 804 rotates, the piston rod 701 at the position of the gas cylinder assembly 4 communicated with the air inlet pipe 601 is limited to rotate under the cooperation of the limiting protrusion 405 and the long limiting groove 702, and thus can move axially downward along the driving sleeve 804 under the cooperation of the screw thread, and then drives the piston 702 to move downward to realize air suction; The other communication air inlet pipes 601 are not pressed, and thus only at the valve port 506 of the valve body 501, so that the gas cylinder assembly 4 cannot be rotationally limited by the communication air inlet pipe 601, and thus the piston rod 701 drives the entire gas cylinder assembly 4 to rotate under the action of the driving sleeve 804, that is, the piston rod 701 rotates with the driving sleeve 804, so that the piston rod 701 does not move downward, and the gas cylinder 401 is supported in the housing 1 by the piston rod 701, and thus the height of the gas cylinder 401 can be ensured to be unchanged to ensure that the subsequent communication air inlet pipe 601 can be docked.

[0050] Step S4, the driving motor 801 is started for a set time and then stopped; The set time can be a controller for controlling the start and stop of the motor on the device, and a timer is connected to the controller. The motor is automatically controlled to stop by this way, and the set time can be adjusted to the working time of one or more gas cylinders 401 filled with gas.

[0051] Wherein, how to automatically open the air inlet 402 of the gas cylinder 401 during the process of filling the multiple gas cylinders 401 can be realized by the cooperation of the arc spring 206 and the third clamping groove 608.

[0052] Step S5, after the sample collection at each preset location, the device is taken to the sample processing location, the upper cover 2 is opened, and the gas cylinder 401 is taken out from the housing 1 for subsequent sample analysis.

[0053] It is easy to understand that those skilled in the art can combine, split, recombine, etc. the embodiments of the present application on the basis of one or more embodiments provided in the present application to obtain other embodiments, and these embodiments do not exceed the protection scope of the present application.

[0054] In summary, the above only describes the preferred embodiments of the present application, and any changes and modifications made within the scope of the present application are also included in the scope of the present application.

Claims

1. A gas collection device for monitoring subway carbon emissions, comprising a device body, characterized in that: The device body comprises a shell (1) and an upper cover (2), and a hanging component (3) is provided on the side of the shell (1); A plurality of chambers (101) are formed inside the housing (1), and a gas cylinder assembly (4) is provided in each chamber (101). The gas cylinder assembly (4) includes a vertically arranged gas cylinder (401), and a blocking valve (5) for blocking the gas inlet (402) is provided at the gas inlet (402) of the gas cylinder (401); An air intake assembly (6) corresponding to each of the gas cylinder assemblies (4) is provided on the upper cover (2), and the air intake assembly (6) includes a connecting air intake pipe (601) capable of extending into the air inlet (402) for opening the blocking valve (5); A piston assembly (7) for drawing air into the gas cylinder (401) via the connected air inlet pipe (601) is provided inside the gas cylinder (401), and a driving assembly (8) for driving the piston assembly (7) is provided inside the housing (1) and at the bottom of the plurality of chambers (101).

2. The gas collection device for subway carbon emission monitoring according to claim 1 is characterized by: The hanging assembly (3) comprises an L-shaped hanging plate (301) with an opening downward, and a magnet (302) is provided on the outer surface of the hanging plate (301).

3. The gas collection device for monitoring subway carbon emissions according to claim 1, characterized in that: The blocking valve (5) comprises a valve body (501) threadedly connected to the air inlet (402) of the gas cylinder (401), a valve core is provided in the valve body (501), the valve core comprises a partition (502) provided on the inner wall of the valve body (501), a gas through hole (503) is formed in the middle of the partition (502), a blocking plate (504) capable of pressing against the lower part of the gas through hole (503) and blocking the gas through hole (503), and a valve core spring (505) for pressing the blocking plate (504) against the gas through hole (503); The end of the air inlet pipe (601) facing the air inlet (402) is provided with a push pin (602) capable of passing through the air through hole (503), and the push pin (602) can push the blocking plate (504) away from the air through hole (503) from top to bottom.

4. The gas collection device for monitoring subway carbon emissions according to claim 3 is characterized by: The air intake assembly (6) includes an air intake cylinder (603) mounted on the outer end surface of the upper cover (2); the air intake pipe (601) and the air intake cylinder (603) are coaxially arranged and can slide up and down along the inner wall of the air intake cylinder (603); and a compression spring (604) is further provided in the air intake cylinder (603) for pushing the air intake pipe (601) to move downward. The upper end of the valve body (501) is formed with a valve port (506) for the connecting air intake pipe (601) to extend therein, and a first limiting mechanism capable of limiting the axial movement of the connecting air intake pipe (601) is provided on the side wall of the valve port (506), the limiting mechanism comprising a first limiting steel ball (507) connected to the side wall of the valve body (501) by a spring and arranged transversely, and a steel ball limiting groove (605) cooperating with the first limiting steel ball (507) is provided on the side wall of the end of the connecting air intake pipe (601), and the first limiting steel ball (507) can be separated from the steel ball limiting groove (605) under the action of an axial external force of the connecting air intake pipe (601).

5. The gas collection device for monitoring subway carbon emissions according to claim 4, characterized in that: The piston assembly (7) comprises a piston rod (701) and a piston (702) plugged into the end of the piston rod (701); an external thread for cooperating with the drive assembly (8) is provided on the outer wall of the piston rod (701); The drive assembly (8) includes a drive motor (801), a drive wheel (802) connected to the output shaft of the drive motor (801), and driven wheels (803) corresponding to the gas cylinder assemblies (4) and meshing with the drive wheel (802). It also includes a drive sleeve (804) coaxially arranged with the piston rod (701), and a drive tooth (805) meshing with the driven wheel (803) is installed on the drive sleeve (804). The inner surface of the drive sleeve (804) is provided with an internal thread that matches the external thread of the piston rod (701). The piston rod (701) can move up and down along the axial direction of the drive sleeve (804) under the rotation of the drive sleeve (804).

6. The gas collection device for monitoring subway carbon emissions according to claim 5, characterized in that: The gas cylinder (401) includes a bottle body (403), an air inlet (402) is arranged at the upper end of the bottle body (403), and the lower end of the bottle body (403) is connected to a bottom cover (404) with a central opening. The piston rod (701) passes through the opening and is spaced apart from the inner wall of the opening. A long limiting groove (702) is axially provided on the outer wall of the piston rod (701), and a limiting protrusion (405) capable of extending into the long limiting groove (702) is provided on the side wall of the opening. The limiting protrusion (405) can move up and down relatively in the long limiting groove (702).

7. The gas collection device for monitoring subway carbon emissions according to claim 5, characterized in that: Multiple chambers (101) are evenly arranged in the shell (1) around the center line of the shell (1). The upper cover (2) includes a cover body (201) and a cover plate (202); a limiting mechanism installation cavity (203) is provided on the upper end surface of the cover body (201); a second limiting mechanism is provided inside the limiting mechanism installation cavity (203) for limiting the axial movement of the connected air intake pipe (601); the limiting mechanism installation cavity (203) includes an annular groove (204) and an air intake pipe installation hole (205) arranged at intervals along the circumference of the annular groove (204) and used for installing the connected air intake pipe (601); a first clamping groove (606) and a second clamping groove (607) are provided on one side of the outer wall of the connected air intake pipe (601); The second limiting mechanism includes an arc spring (206) arranged in the annular groove (204), and second limiting steel balls (207) are provided at both ends of the arc spring (206) and can extend to the intake pipe mounting hole (205) under the action of elastic force. The second limiting steel ball (207) at one end of the arc spring (206) can be clamped into one of the first clamping groove (606) or the second clamping groove (607) connected to the intake pipe (601).

8. The gas collection device for monitoring subway carbon emissions according to claim 7, characterized in that: The other side of the outer side wall of the connecting air intake pipe (601) is provided with a second limiting steel ball (207) having a height higher than the first clamping groove (606); the second limiting steel ball (207) at the other end of the arc spring (206) can be clamped into the third clamping groove (608) connected to the connecting air intake pipe (601); when the second limiting steel ball (207) is clamped into the third clamping groove (608), the second limiting steel ball (207) in the second clamping groove (607) of the adjacent connecting air intake pipe (601) is disengaged.

9. The gas collection device for monitoring subway carbon emissions according to claim 1, characterized in that: A battery mounting seat (9) is fixed inside the housing (1) and on the upper cover (2). The battery mounting seat (9) can be pulled out of the housing (1) from the upper cover (2). A battery mounting position (901) is provided at the battery mounting seat (9). A power supply battery for supplying power to the driving component (8) can be installed at the battery mounting position (901).

10. A gas collection method for monitoring subway carbon emissions, characterized by: It collects gas based on the gas collection device for subway carbon emission monitoring described in any one of claims 1-9.

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