阅读说明：本技术 一种油罐区油气智能监测系统 (Oil tank field oil gas intelligent monitoring system ) 是由 陈希建 陈锋 曹志华 沈正华 王俊 闫长平 张文博 赵智慧 张凯泉 聂冶 陈方 于 2021-07-06 设计创作，主要内容包括：本发明公开了一种油罐区油气智能监测系统,包括；罐体,所述罐体的侧壁设置有传动机构、报警机构以及燃烧装置；检测装置；密封机构,本发明通过检测装置的工作,使得传动机构开始工作,通过传动机构的运动,带动连接头向下移动,当检测装置检测罐体内部气体浓度达到阈值时,卡板将会在复位弹簧的作用下脱离卡块的顶部,进而使得密封板在复位弹簧的作用下向下滑动,使得进气管内打开,惰性气体经过进气管进入罐体的内部,与此同时,电极头进入电极槽内,使得该系统发出警报,提醒人员罐体内气体浓度达到阈值,方便人员做出及时处理,并且对内部气体进行了保护,防止危险的发生,对人员进行了一定程度的保护,降低了经济损失。(The invention discloses an intelligent oil and gas monitoring system for an oil tank field, which comprises a monitoring system, a monitoring system and a monitoring system, wherein the monitoring system comprises a monitoring system; the side wall of the tank body is provided with a transmission mechanism, an alarm mechanism and a combustion device; a detection device; the sealing mechanism starts to work through the work of the detection device, the transmission mechanism drives the connector to move downwards through the movement of the transmission mechanism, when the detection device detects that the gas concentration in the tank body reaches a threshold value, the clamping plate can be separated from the top of the clamping block under the action of the reset spring, the sealing plate can slide downwards under the action of the reset spring, the air inlet pipe is opened, inert gas enters the tank body through the air inlet pipe, meanwhile, the electrode tip enters the electrode groove, the system gives an alarm to remind personnel that the gas concentration in the tank body reaches the threshold value, the personnel can conveniently process the gas in time, the gas in the tank body is protected, danger is prevented, the personnel are protected to a certain extent, and economic loss is reduced.)

1. An intelligent oil and gas monitoring system for an oil tank field is characterized by comprising;

the monitoring system is used for monitoring the oil gas concentration in real time;

the device comprises a tank body (1), wherein a transmission mechanism (7), an alarm mechanism (9) and a combustion device (5) are arranged on the side wall of the tank body (1);

the detection device (6) is used for detecting the gas concentration and providing power for the transmission mechanism (7), and the detection device (6) is arranged on the inner side wall of the tank body (1);

sealing mechanism (8) for release inert gas, sealing mechanism (8) with the top fixed connection of drive mechanism (7), sealing mechanism (8) set up inside the lateral wall of jar body (1).

2. The intelligent oil and gas monitoring system for the oil tank field according to claim 1 is characterized in that the detection device (6) comprises a detection box (61), a sliding plate (62), an indication rod (63), a scale mark (64), an air inlet (65) and a communication port (66); the detection box (61) is fixedly connected with the inner side wall of the tank body (1); the lateral wall of slide (62) with the inside wall sliding connection of detection case (61), the bottom of instruction pole (63) with the top fixed connection of slide (62), instruction pole (63) run through the top of the jar body (1), and with the jar body (1) is laminated mutually, scale mark (64) set up on the lateral wall of instruction pole (63), air inlet (65) are seted up on the lateral wall of the jar body (1), intercommunication mouth (66) set up on the lateral wall of detection case (61).

3. The intelligent oil and gas monitoring system for the oil tank field according to claim 1, wherein the sealing mechanism (8) comprises a connector (81), a return spring (82), a sealing plate (83), a clamping plate (84) and a clamping block (85); the utility model discloses a tank body, including connector (81), inside wall bottom fixedly connected with reset spring (82), the top fixedly connected with closing plate (83) of reset spring (82), the lateral wall fixedly connected with cardboard (84) of closing plate (83), the outside wall laminating of cardboard (84) has fixture block (85), closing plate (83) through intake pipe (10) with jar body (1) is connected, the top of closing plate (83) with the inside wall top laminating of intake pipe (10) mutually.

4. The intelligent oil and gas monitoring system for the oil tank field according to claim 1, wherein the combustion device (5) comprises a combustion chamber (51), an igniter (52) and a condensation collecting plate (53); the outer side wall of the combustion chamber (51) is fixedly connected with the outer side wall of the tank body (1), the end part of the igniter (52) is fixedly connected with the inner side wall of the combustion chamber (51), and the condensation collecting plate (53) is fixedly connected with the top of the inner side wall of the combustion chamber (51).

5. The intelligent oil and gas monitoring system of the oil tank field according to claim 1, wherein the transmission mechanism (7) comprises a push rod (71), a gear (72), a tooth rod (73), a push-pull plate (74) and a tension spring (75); the outer side wall of the gear (72) is meshed with the outer side wall of the push rod (71), the outer side wall of the toothed rod (73) is meshed with the outer side wall of the gear (72), the end part of the push-pull plate (74) is fixedly connected with the outer side wall of the toothed rod (73), and the bottom of the extension spring (75) is fixedly connected with the top of the push-pull plate (74);

the top of the push rod (71) is fixedly connected with the alarm mechanism (9), the alarm mechanism (9) comprises an electrode tip (91) and an electrode groove (92), the electrode tip (91) is arranged right opposite to the bottom of the electrode groove (92), the electrode tip (91) is fixedly connected with the top of the push rod (71), and the electrode groove (92) is arranged at the bottom of the push-pull plate (74).

6. The intelligent oil and gas monitoring system for the oil tank area according to claim 1 is characterized in that supporting legs (2) are fixedly connected to the bottom of the tank body (1), gas conveying pipes (3) are fixedly connected to the side wall of the tank body (1), valves (4) are arranged on the gas conveying pipes (3), and functional grooves (11) are formed in the side wall of the tank body (1).

7. The intelligent oil and gas monitoring system for the oil tank field according to claim 6 is characterized in that the top of the gas conveying pipe (3) is fixedly connected with the bottom of the combustion chamber (51) in a penetrating manner, the outer side wall of the sliding plate (62) is slidably connected with the inner side wall of the tank body (1), the outer side wall of the sealing plate (83) is slidably connected with the inner side wall of the functional groove (11), the clamping block (85) is fixedly connected to the inner side wall of the functional groove (11), and the transmission mechanism (7) is connected with the inner side wall of the functional groove (11).

8. The intelligent oil and gas monitoring system for the oil tank field according to claim 1, wherein the monitoring system comprises a control terminal, a real-time monitoring module, an alarm module, an orientation monitoring module and an oil and gas concentration detection module;

the control terminal is used for controlling the system; the real-time monitoring module is used for monitoring the control terminal in real time; the alarm module is used for giving an alarm when the oil gas concentration exceeds a threshold value; the monitoring module can be used for refreshing the system in time and ensuring the state of the system; and the oil gas concentration detection module is used for detecting the oil gas concentration of the oil tank area.

Technical Field

The invention relates to the technical field of oil tank detection, in particular to an intelligent oil and gas monitoring system for an oil tank area.

Background

The containers that store the crude oil or other petroleum products are called tankers. In refineries, oil fields, oil depots, and other industries. The tank farm is made up of a plurality of tanks. Each tank farm typically stores one oil product. After the oil tank is built, water filling inspection must be carried out, and the main purposes are as follows: the reliability of the tank body structure is checked; checking for leaks (including welds of steel tanks and cracks of non-metallic tanks); and (5) pre-pressing the foundation. The water filling rate of the soft foundation is strictly controlled, so that the sedimentation of the tank body is not too fast, and meanwhile, the change of the surface soil around the tank body is noticed to avoid the shearing damage of the foundation. The oil tank is subjected to settlement observation continuously from the foundation construction to a period of time after the oil tank is put into operation. For the floating roof tank, a floating roof lifting test is also carried out. During water filling and water discharging, the stability of the lifting of the floating roof, the sealing performance, the flexibility of the guide part, the leakage of the central drain pipe and the like are mainly checked.

Traditional oil tank detecting system, when carrying out the oil tank and examining, can't accomplish the detection of accomplishing the accuracy to the inside concentration of oil tank, can't accomplish timely warning according to oil tank concentration when examining, and traditional system is when carrying out detection achievement, when concentration reaches the early warning in the oil tank, can't realize making the inside concentration of oil tank reach the standard value to the inside automatic inert gas that fills of oil tank, this will have certain potential safety hazard, for this reason we provide an oil tank district oil gas intelligent monitoring system and solve above-mentioned problem.

Disclosure of Invention

The invention aims to solve the problems that the concentration in an oil tank cannot be accurately detected in the prior art, timely alarm cannot be realized according to the concentration of the oil tank during detection, and when the concentration in the oil tank reaches early warning during detection of a traditional system, inert gas cannot be automatically filled into the oil tank so that the concentration in the oil tank reaches a standard value, and provides an intelligent oil and gas monitoring system for an oil tank area.

In order to achieve the purpose, the invention adopts the following technical scheme:

an intelligent oil and gas monitoring system for an oil tank area comprises;

the side wall of the tank body is provided with a transmission mechanism, an alarm mechanism and a combustion device;

the detection device is used for detecting the gas concentration and providing power for the transmission mechanism, and is arranged on the inner side wall of the tank body;

and the sealing mechanism is used for releasing inert gas, is fixedly connected with the top of the transmission mechanism and is arranged inside the side wall of the tank body.

Preferably, the detection device comprises a detection box, a sliding plate, an indicating rod, a scale mark, an air inlet and a communication port; the detection box is fixedly connected with the inner side wall of the tank body; the outer side wall of the sliding plate is connected with the inner side wall of the detection box in a sliding mode, the bottom of the indicating rod is fixedly connected with the top of the sliding plate, the indicating rod penetrates through the top of the tank body and is attached to the tank body, the scale marks are arranged on the outer side wall of the indicating rod, the air inlet is formed in the side wall of the tank body, and the communicating port is formed in the side wall of the detection box.

Preferably, the sealing mechanism comprises a connector, a return spring, a sealing plate, a clamping plate and a clamping block; the tank body is characterized in that a reset spring is fixedly connected to the bottom of the inner side wall of the connector, a sealing plate is fixedly connected to the top of the reset spring, a clamping plate is fixedly connected to the outer side wall of the sealing plate, a clamping block is attached to the outer side wall of the clamping plate, the sealing plate is connected with the tank body through an air inlet pipe, and the top of the sealing plate is attached to the top of the inner side wall of the air inlet pipe.

Preferably, the combustion apparatus comprises a combustion chamber, an igniter and a condensation collection plate; the outer side wall of the combustion chamber is fixedly connected with the outer side wall of the tank body, the end part of the igniter is fixedly connected with the inner side wall of the combustion chamber, and the condensation collecting plate is fixedly connected with the top part of the inner side wall of the combustion chamber.

Preferably, the transmission mechanism comprises a push rod, a gear, a tooth rod, a push-pull plate and an extension spring; the outer side wall of the gear is meshed with the outer side wall of the push rod, the outer side wall of the toothed rod is meshed with the outer side wall of the gear, the end part of the push-pull plate is fixedly connected with the outer side wall of the toothed rod, and the bottom of the extension spring is fixedly connected with the top of the push-pull plate;

the top of the push rod is fixedly connected with the alarm mechanism, the alarm mechanism comprises an electrode tip and an electrode groove, the electrode tip is arranged right opposite to the bottom of the electrode groove, the electrode tip is fixedly connected to the top of the push rod, and the electrode groove is arranged at the bottom of the push-pull plate.

Preferably, the bottom of the tank body is fixedly connected with supporting legs, the side wall of the tank body is fixedly connected with a gas pipe, a valve is arranged on the gas pipe, and a functional groove is formed in the side wall of the tank body.

Preferably, the top of the gas pipe and the bottom of the combustion chamber penetrate through and are fixedly connected, the outer side wall of the sliding plate is in sliding connection with the inner side wall of the tank body, the outer side wall of the sealing plate is in sliding connection with the inner side wall of the functional groove, the clamping block is fixedly connected to the inner side wall of the functional groove, and the transmission mechanism is connected with the inner side wall of the functional groove.

Preferably, the monitoring system comprises a control terminal, a real-time monitoring module, an alarm module, an orientation monitoring module and an oil gas concentration detection module;

the control terminal is used for controlling the system; the real-time monitoring module is used for monitoring the control terminal in real time; the alarm module is used for giving an alarm when the oil gas concentration exceeds a threshold value; the monitoring module can be used for refreshing the system in time and ensuring the state of the system; and the oil gas concentration detection module is used for detecting the oil gas concentration of the oil tank area.

Compared with the prior art, the invention has the beneficial effects that:

1. when the gas concentration detection device is used, firstly, the valve is opened, so that gas in the tank body enters the combustion device through the gas transmission pipe, then the combustion device is started to ignite the gas transmission pipe to discharge gas, the pressure in the tank body is reduced through the work of the combustion device, at the moment, the detection device starts to work, outside air enters the bottom of the sliding plate in the detection box through the arrangement of the gas inlet and the communication port, the sliding plate slides upwards due to different internal and external pressures, the indicating rod is pushed to move upwards, and at the moment, personnel can observe the gas concentration in the tank body according to the scale marks arranged on the outer side wall of the indicating rod, so that the personnel can record conveniently, and the detection accuracy is ensured.

2. According to the invention, the transmission mechanism starts to work through the work of the detection device, the connector is driven to move downwards through the movement of the transmission mechanism, when the detection device detects that the gas concentration in the tank body reaches a threshold value, the clamping plate can be separated from the top of the clamping block under the action of the reset spring, so that the sealing plate can slide downwards under the action of the reset spring, the gas inlet pipe is opened, inert gas enters the tank body through the gas inlet pipe, meanwhile, the electrode tip enters the electrode groove, the system gives an alarm to remind personnel that the gas concentration in the tank body reaches the threshold value, the personnel can conveniently treat the gas in time, the internal gas is protected, the occurrence of danger is prevented, the personnel are protected to a certain extent, and the economic loss is reduced.

Drawings

FIG. 1 is a schematic diagram of a front cross-sectional structure of an intelligent oil and gas monitoring system for an oil tank field according to the present invention;

FIG. 2 is a schematic structural view of a linkage structure of an intelligent oil and gas monitoring system of an oil tank field in a front cross-sectional view, according to the present invention;

FIG. 3 is a schematic view of a linkage structure front side three-dimensional structure of an intelligent oil and gas monitoring system of an oil tank field, which is provided by the invention;

FIG. 4 is a schematic structural diagram of a front surface of an indicating rod of the intelligent oil and gas monitoring system for the oil tank field, which is provided by the invention;

FIG. 5 is an enlarged schematic structural diagram of a part A in FIG. 1 of an intelligent oil and gas monitoring system for an oil tank field according to the present invention;

FIG. 6 is an enlarged schematic structural diagram of a tank farm oil and gas intelligent monitoring system shown in FIG. 2 at B;

FIG. 7 is a block diagram of a monitoring system of an intelligent oil and gas monitoring system of an oil tank field according to the present invention.

In the figure: 1 tank body, 2 support legs, 3 gas pipes, 4 valves, 5 combustion devices, 51 combustion chambers, 52 igniters, 53 condensation collecting plates, 6 detection devices, 61 detection boxes, 62 sliding plates, 63 indication rods, 64 scale marks, 65 gas inlets, 66 communication ports, 7 transmission mechanisms, 71 push rods, 72 gears, 73 tooth rods, 74 push-pull plates, 75 extension springs, 8 sealing mechanisms, 81 connecting heads, 82 reset springs, 83 sealing plates, 84 clamping plates, 85 clamping blocks, 9 alarm mechanisms, 91 electrode heads, 92 electrode grooves, 10 gas inlet pipes and 11 function grooves.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-7, an intelligent oil and gas monitoring system for an oil tank field comprises;

the side wall of the tank body 1 is provided with a transmission mechanism 7, an alarm mechanism 9 and a combustion device 5;

the detection device 6 is used for detecting the gas concentration and providing power for the transmission mechanism 7, and the detection device 6 is arranged on the inner side wall of the tank body 1;

the sealing mechanism 8 is used for releasing inert gas, the sealing mechanism 8 is fixedly connected with the top of the transmission mechanism 7, and the sealing mechanism 8 is arranged inside the side wall of the tank body 1;

through the setting of above-mentioned structure, make when examining gas concentration, make jar internal concentration of body 1 decline through the work of burner 5, pressure reduces, make detection device 6 begin work, make drive mechanism 7 begin work through the work of detection device 6, when jar internal portion concentration of body reaches the threshold value, sealing mechanism 8 will be unable to seal, make inert gas enter into jar internal portion of body 1, meanwhile, alarm mechanism 9 begins work, make this system send out the police dispatch newspaper, remind personnel.

Wherein, the detection device 6 comprises a detection box 61, a sliding plate 62, an indication rod 63, a scale mark 64, an air inlet 65 and a communication port 66; the detection box 61 is fixedly connected with the inner side wall of the tank body 1; the outer side wall of the sliding plate 62 is connected with the inner side wall of the detection box 61 in a sliding mode, the bottom of the indicating rod 63 is fixedly connected with the top of the sliding plate 62, the indicating rod 63 penetrates through the top of the tank body 1 and is attached to the tank body 1, the scale mark 64 is arranged on the outer side wall of the indicating rod 63, the air inlet 65 is formed in the side wall of the tank body 1, and the communication port 66 is formed in the side wall of the detection box 61;

when the pressure gauge is used, the pressure in the tank body 1 is reduced due to the work of the combustion device 5, the external pressure pushes the sliding plate 62 to slide upwards through the communication port 66 and the air inlet 65, the indicating rod 63 extends completely, personnel can observe the gas concentration in the tank body 1 according to the scale, the personnel can conveniently record the gas concentration in time, and power can be provided for the transmission mechanism 7.

The sealing mechanism 8 comprises a connector 81, a return spring 82, a sealing plate 83, a clamping plate 84 and a clamping block 85; the bottom of the inner side wall of the connector 81 is fixedly connected with a return spring 82, the top of the return spring 82 is fixedly connected with a sealing plate 83, the outer side wall of the sealing plate 83 is fixedly connected with a clamping plate 84, the outer side wall of the clamping plate 84 is attached with a clamping block 85, the sealing plate 83 is connected with the tank body 1 through an air inlet pipe 10, and the top of the sealing plate 83 is attached with the top of the inner side wall of the air inlet pipe 10;

make drive mechanism 7 begin to work through detection device 6's work, and then drive connecting head 81 and slide downwards, when the gaseous concentration in the jar body 1 that detection device 6 detected reached the threshold value, connecting head 81 slides to bottommost position, at this moment cardboard 84 will break away from the top of fixture block 85 under reset spring 82's effect, make cardboard 84 and fixture block 85 unable to play limiting displacement to closing plate 83, at this moment intake pipe 10 begins to fill inert gas to jar internal portion of body 1, the realization is to jar internal portion gaseous protection.

Wherein, the combustion device 5 comprises a combustion chamber 51, an igniter 52 and a condensation collection plate 53; the outer side wall of the combustion chamber 51 is fixedly connected with the outer side wall of the tank body 1, the end part of the igniter 52 is fixedly connected with the inner side wall of the combustion chamber 51, and the condensation collecting plate 53 is fixedly connected with the top of the inner side wall of the combustion chamber 51;

when detecting the gas in the tank body 1, the igniter 52 is started by opening the valve 4 to start the gas in the tank body 1 to start burning, the water vapor generated by burning is collected by the condensing and collecting plate 53 when passing through the condensing and collecting plate, the gas which cannot be collected can be automatically discharged, the resources are collected to a certain degree, and the utilization rate of the resources is improved.

Wherein, the transmission mechanism 7 comprises a push rod 71, a gear 72, a tooth rod 73, a push-pull plate 74 and an extension spring 75; the outer side wall of the gear 72 is meshed with the outer side wall of the push rod 71, the outer side wall of the toothed rod 73 is meshed with the outer side wall of the gear 72, the end part of the push-pull plate 74 is fixedly connected with the outer side wall of the toothed rod 73, and the bottom of the tension spring 75 is fixedly connected with the top of the push-pull plate 74;

the top of the push rod 71 is fixedly connected with the alarm mechanism 9, the alarm mechanism 9 comprises an electrode head 91 and an electrode groove 92, the electrode head 91 is arranged right opposite to the bottom of the electrode groove 92, the electrode head 91 is fixedly connected with the top of the push rod 71, and the electrode groove 92 is arranged at the bottom of the push-pull plate 74;

when the detection device 6 works, the push rod 71 moves upwards through the work of the detection device 6, the gear 72 further rotates, the tooth rod 73 and the push-pull plate 74 move downwards through the rotation of the gear 72, a foundation is provided for the work of the sealing device 8, when the detection device 6 detects that the concentration of the gas in the tank body 1 reaches a threshold value, the electrode tip 91 is inserted into the electrode groove 92, the alarm device starts to work, the personnel is reminded that the concentration of the gas in the tank body 1 reaches the threshold value, and the personnel can make timely response.

Wherein, the bottom fixedly connected with landing leg 2 of jar body 1, the lateral wall fixedly connected with gas-supply pipe 3 of jar body 1 are provided with valve 4 on the gas-supply pipe 3, and the inside functional groove 11 that offers of lateral wall of jar body 1.

Wherein, the top of gas-supply pipe 3 and the bottom of combustion chamber 51 run through fixed connection, the lateral wall of slide 62 and the inside wall sliding connection of the jar body 1, the lateral wall of closing plate 83 and the inside wall sliding connection of function groove 11, fixture block 85 fixed connection is on the inside wall of function groove 11, drive mechanism 7 is connected with the inside wall of function groove 11.

The monitoring system comprises a control terminal, a real-time monitoring module, an alarm module, an orientation monitoring module and an oil gas concentration detection module;

the control terminal is used for controlling the system; the real-time monitoring module is used for controlling the terminal to carry out real-time monitoring; the alarm module is used for giving an alarm when the oil gas concentration exceeds a threshold value; the monitoring module can be used for refreshing the system in time and ensuring the state of the system; the oil gas concentration detection module is used for detecting the oil gas concentration of the oil tank area;

the system adopts industrial-grade design, passes ExdIICT6 explosion-proof certification, has IP65 protection grade, and has the function of monitoring the concentration of the oil tank area in real time; the control terminal of the system comprises a platform computer end and a mobile APP end, so that the control terminal can monitor the system through a real-time monitoring module; an alarm module of the system can remind responsible personnel through sound and vibration once the oil gas concentration exceeds a threshold value; the system can provide virtual remote communication quantity including a switch, a knife switch, a net door, a temporary ground wire and the like for the monitoring module, so that the state of the system is ensured, the system can be refreshed in time, and the monitoring efficiency is improved.

In the invention, when the gas concentration indicator is used, the igniter 5 is started by opening the valve 4, so that the combustion device 5 ignites the gas exhausted from the gas pipe 3, the gas is combusted, water vapor and other gases are generated, the water vapor is condensed and collected when passing through the condensation and collection plate 53, the gas is combusted by the combustion device 5, the gas quantity in the tank body 1 is reduced, the pressure is reduced, and the external gas pushes the gas in the tank body 1 of the sliding plate 62 to pull the sliding plate 62 to move upwards through the arrangement of the communication port 66 and the gas inlet 65, so that the sliding plate 62 pushes the indicator rod 63 upwards, and the gas concentration in the tank body 1 is displayed in time;

when the top of the slide plate 62 contacts the bottom of the push rod 71, the slide plate 62 moves upward again, which pushes the push rod 71 to move upward, causing the gear 72 to rotate, and further drives the toothed rod 73 to move downwards, so that the push-pull plate 74 is pulled to move downwards, the downward movement of the push-pull plate 74 pulls the connecting head 81 to move downwards, so that the return spring 82 is pulled, when the detection device 6 detects that the concentration inside the tank body 1 reaches the threshold value, the clamping plate 84 will be separated from the limit of the clamping block 85 under the action of the return spring 82, so that the sealing plate 83 is moved downward by the return spring 82 to open the gas inlet pipe 10, so that the inert gas is introduced into the inside of the can body 1, protecting the gas in the tank body 1 to ensure that the concentration in the tank body 1 reaches a standard value, and simultaneously enabling the electrode tip 91 to enter the electrode groove 92 to ensure that the system gives an alarm;

in the process that the concentration in the tank body 1 reaches the standard, the sliding plate 62 is pushed to move downwards, at the moment, the push-pull plate 74 moves upwards under the action of the extension spring 75, the tooth rod 73 drives the push rod 71 to move downwards through the gear 72, the electrode tip 91 is separated from the electrode groove 92, the alarm state can be relieved, the connecting head 81 is also enabled to push the sealing plate 83 to slide upwards, when the top of the sliding plate 62 cannot be in contact with the top of the push rod 71, the clamping plate 84 pushes the top of the clamping block 85 under the action of the extension spring 75, the sealing plate 83 seals the air inlet pipe 10, the valve 4 can be closed at the moment, the detection alarm work is completed, the operation is simple and fast, the intelligent degree is high, and the use of a person is facilitated.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention should be covered by the scope of the present invention.