Multi-control fire-fighting container valve and control method

Abstract

The invention relates to a multi-control fire-fighting container valve and a control method. Comprising a valve body of the container valve and a starting valve connected with the valve body. A valve body channel in the valve body is communicated with a starting channel in the starting valve, the valve body channel is arranged in the valve body channel, and a valve rod is arranged in the starting channel. And the starting valve is provided with a starting interface connected with the pressure release device. In this way, the pressure releasing device releases pressure to drive the valve element to move, or the valve rod is actively pushed to drive the valve element to move, and therefore multiple control is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fire valve, in particular to a multiple control fire container valve and control method. BACKGROUND

[0002] The prior art fire valve completely relies on the pressure difference inside the fire extinguishing equipment container to achieve starting. Its initial state maintains pressure balance through a small hole on the valve core. When working, an external force is needed to break a sealing point (such as piercing the diaphragm or pushing away the air valve core) to release the external cavity pressure, thereby driving the valve core to act. This design makes the entire starting process excessively dependent on a fragile, one-time pressure relief component. Once the component leaks due to corrosion, aging or mechanical failure, it will cause the system to malfunction prematurely or completely fail, and the stability and anti-interference ability are poor.

[0003] In addition, the sealing structure of the prior art fire valve is complex, usually divided into three main parts: the valve core top space (external cavity), the valve core itself, and the space below the valve core connected to the fire extinguishing agent container (internal cavity). Corresponding to these three parts, there are three sealing systems, for example, the valve core top space uses a working diaphragm, a polytetrafluoroethylene gasket and an O-ring to achieve sealing; the part of the valve core extending out of the fire extinguishing agent outlet relies on an O-ring for sealing; and the connection between the valve core and the fire extinguishing agent container is sealed by a polytetrafluoroethylene gasket combined with an O-ring. Leakage at any of the three sealing positions will cause the entire fire extinguishing equipment to malfunction. SUMMARY

[0004] To solve the problems raised in the background art, the purpose of the present application is to provide a multiple control fire container valve. The valve body of the container valve is provided with a valve body channel, a valve core is arranged in the valve body channel, the valve core is connected to one end of the valve body channel through a spring, the container valve is provided with a fire extinguishing agent outlet and a fire extinguishing agent inlet connected to the valve body channel; The starting valve connected to the container valve is further provided with a starting channel, one end of the starting channel is communicated with the other end of the valve body channel, a valve rod is slidably arranged in the starting channel, one end of the valve rod extends from the starting channel to the valve body channel, and the other end of the valve rod extends to the outside of the starting valve; The starting valve is provided with a starting interface communicated with the starting channel, the outer surface of the valve rod is provided with a sealing layer, and the distance between the starting interface and the container valve is less than the distance between the sealing layer and the container valve.

[0005] Preferably, the valve core is in interference fit with the valve body channel on both sides along the extension direction of the valve body channel, and the middle part of the valve core is in clearance fit with the valve body channel; In the initial state of the valve core, the fire extinguishing agent outlet is located in the area between one end of the valve body channel and the valve core, and the fire extinguishing agent inlet is located in the area of clearance fit between the valve core and the valve body channel. After the spool moves to one end of the valve body channel, the fire extinguishing agent outlet and the fire extinguishing agent inlet are both located in the region where the spool and the valve body channel are in clearance fit.

[0006] Preferably, the outer surface of the two sides of the spool along the extension direction of the valve body channel is provided with a sealing layer in interference fit with the valve body channel.

[0007] Preferably, the fire extinguishing agent inlet is connected with a containing bottle.

[0008] Preferably, the valve body channel is provided with an inflation port, and in the initial state of the spool, the inflation port is located in the region where the spool and the valve body channel are in clearance fit.

[0009] Preferably, the inflation port is provided with a one-way valve core.

[0010] Preferably, in the initial state of the spool, the region where the valve body channel and the spool are in clearance fit is provided with a pressure sensing device.

[0011] Preferably, in the initial state of the spool, the region where the valve body channel and the spool are in clearance fit is provided with an overpressure relief device.

[0012] Preferably, one end of the valve body channel is provided with an adjusting screw, and the spool is connected with the adjusting screw through a spring.

[0013] A control method of a multi-control container valve, applied to the multi-control container valve, comprising the steps of.

[0014] S1. connecting the fire extinguishing agent outlet with an external spraying device, connecting the fire extinguishing agent inlet with an external fire extinguishing agent source, connecting the starting interface of the starting valve with an external pressure release device, and connecting the pressure release device with an external control system through an electrical signal; S2. detecting the overall state of the valve body and the starting valve of the container valve and initializing; S3. driving the pressure release device to release pressure through the electrical signal of the external control system, and the pressure flows from the starting channel to the valve body channel to drive the spool to move, so that the fire extinguishing agent inlet is in communication with the fire extinguishing agent outlet, the fire extinguishing agent flows from the fire extinguishing agent inlet to the fire extinguishing agent outlet, and the fire extinguishing agent is output from the external spraying device connected with the fire extinguishing agent outlet; S4. when the fire extinguishing operation is completed, the pressure release device is driven to release pressure through the electrical signal of the external control system, the spool is reset under the action of the spring, the communication state of the fire extinguishing agent inlet and the fire extinguishing agent outlet is blocked, and the output of the fire extinguishing agent from the fire extinguishing agent outlet is stopped.

[0015] In summary, the present application has the following beneficial technical effects: By setting the starting valve, and setting the starting channel in the starting valve which communicates with the valve body channel in the valve body of the container valve, the valve rod and the pressure relief device set in the starting valve drive the valve core to move, the movement of the valve core is driven by the two ways of the valve rod or the pressure relief device, the driving way of driving the valve core to move is increased; the valve core structure is modified, the valve core originally provided with multiple sealing structures is modified to the shape of thin in the middle and thick at both ends, and the parts at both ends are interference fit with the valve body channel to realize the sealing effect. The valve body channel is divided into three mutually sealed and isolated parts by the valve core itself, the range of the three mutually sealed and isolated parts is changed only by the movement of the valve core itself, the number of sealing structures is reduced, and the difficulty that the leakage of a sealing structure in the prior art leads to the failure of the entire fire valve is prevented; based on the gap fit between the thin part in the middle of the valve core and the valve body channel, there is a gap between the middle part of the valve core and the valve body channel, the accommodation equipment for accommodating the bottle is set, the operation of injecting the fire extinguishing agent into the accommodating bottle through the container valve is realized, the reuse is realized, the use cost is significantly reduced, and the process and cost of replacing the finished fire extinguishing agent container such as the fire extinguishing agent tank are eliminated. BRIEF DESCRIPTION OF DRAWINGS Figure 1 is a perspective view of the present application; Figure 2 is a sectional view of the front view of the present application; Figure 3 is a perspective view of the present application combined with the accommodating bottle; Figure 4 is a work flow chart of the control method of the present application.

[0016] BRIEF DESCRIPTION OF DRAWINGS: 1, valve body; 101, valve body channel; 102, fire extinguishing agent inlet; 103, fire extinguishing agent outlet; 104, inflation port; 2, valve core; 3, starting valve; 301, starting channel; 302, valve rod; 303, starting interface; 4, pressure sensing device; 5, accommodating bottle; 6, overpressure relief device; 7, locking mechanism; 8, adjusting screw. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0018] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application. Figures 1-4The application is further described in detail. The application discloses a multiple control fire extinguishing container valve. The valve body 1 of the container valve is provided with a valve body channel 101. The valve core 2 is arranged in the valve body channel 101. The valve core 2 is connected to one end of the valve body channel 101 through a spring. In the initial state, the spring pushes the valve core 2 to make the valve core 2 close to the other end of the valve body channel 101. The container valve is provided with a fire extinguishing agent outlet 103 and a fire extinguishing agent inlet 102 which are connected to the valve body channel 101. The fire extinguishing agent outlet 103 is used to output the fire extinguishing agent and is usually connected to a fire extinguishing agent spraying device such as a nozzle or a spray pipe. The fire extinguishing agent inlet 102 is used to connect to the source of the fire extinguishing agent such as the mouth of a bottle containing the fire extinguishing agent or a pipeline for inputting the fire extinguishing agent. In the initial state, the valve core 2 blocks the fire extinguishing agent outlet 103 and the fire extinguishing agent inlet 102 to prevent the communication between the fire extinguishing agent outlet 103 and the fire extinguishing agent inlet 102.

[0019] The application also comprises a starting valve 3 connected to the container valve. The starting valve 3 is provided with a starting channel 301. One end of the starting channel 301 is communicated with the other end of the valve body channel 101. The valve rod 302 is arranged in the starting channel 301 in a sliding mode. One end of the valve rod 302 extends from the starting channel 301 to the valve body channel 101. The other end of the valve rod 302 extends to the outside of the starting valve 3. By driving the valve rod 302, the valve rod 302 pushes the valve core 2 to move, changes the position of the valve core 2, and then removes the blockage of the valve core 2 to the fire extinguishing agent outlet 103 and the fire extinguishing agent inlet 102, so that the fire extinguishing agent outlet 103, the fire extinguishing agent inlet 102 and the valve body channel 101 are in a communication state, and then the fire extinguishing agent enters the valve body channel 101 from the fire extinguishing agent inlet 102, and then enters the fire extinguishing agent outlet 103 from the valve body channel 101, and finally the fire extinguishing agent is output from the fire extinguishing agent outlet 103.

[0020] The starting valve 3 is provided with a starting interface 303 connected to the starting channel 301, and the outer surface of the valve rod 302 is provided with a sealing layer. The starting interface 303 is used to connect a pressure release device (not shown in the figure). The pressure source in the pressure release device can be any medium with pressure effect, such as water pressure, hydraulic pressure, air pressure, etc. Through the pressure released by the pressure release device, the valve core 2 is impacted to displace the valve core 2, achieving the same effect as pushing the valve core 2 to displace by the valve rod 302. Driving the valve core 2 to move can actively control the valve rod 302 to move and push, or can be pushed by the pressure released by the pressure release device. Therefore, the pressure release device is provided with an external signal control, such as a wireless control module, which can remotely control the movement of the valve core 2. It can also be an electrical signal, such as a specific monitoring system, which sets a monitoring threshold. When the monitoring threshold is reached, the monitoring system controls the pressure release device to release pressure through an electrical signal, thereby driving the valve core 2 to move. The manual drive of the valve rod 302 serves as a backup safety means, which can drive the valve core 2 to move manually by driving the valve rod 302 in the case of failure of the pressure release device. In order to make the pressure released by the pressure release device directly drive the valve core 2 without interfering with the valve rod 302, the distance between the starting interface 303 and the container valve is less than the distance between the sealing layer and the container valve. Therefore, the pressure released by the pressure release device acts between the valve core 2 and the sealing layer, so that the pressure can drive the valve core 2 to move. At the same time, the sealing layer of the valve rod 302 can also prevent the pressure released by the pressure release device from leaking. The pressure release device can be used repeatedly to drive the valve core 2 without affecting the service life of the valve rod 302. This non-invasive pressure driving as the main control mode avoids frequent manual operation and maintenance, and the operation mode is more advanced, avoiding the cumbersome operation of resetting the position of the valve rod 302 after using the valve rod 302 in the prior art. In particular, in the prior art, in order to prevent the valve rod 302 from pushing the valve core 2 due to accidental touch, the valve rod 302 is usually provided with a locking mechanism 7, which needs to be unlocked to drive the valve rod 302, and the reset operation of the valve rod 302 also needs to reset the locking mechanism 7. In this embodiment, the locking mechanism 7 is arranged on the part of the valve rod 302 extending outside the starting valve 3, which is usually a bolt or similar locking mechanism 7 that can quickly release the movement of the valve rod 302, for example, the valve rod 302 is provided with a locking hole, and the starting valve is provided with a hole corresponding to the locking hole. The bolt as the locking mechanism 7 fixes the valve rod 302 and the starting valve 3. And when the pressure release device releases the pressure, the spring can push the valve core 2 to reset to the initial state, realizing the automatic closing of the output state of the fire extinguishing agent.

[0021] Further, the valve core 2 is a special structure of thin in the middle and thick at both ends, specifically, the two sides of the valve core 2 along the extension direction of the valve body channel 101 are in interference fit with the valve body channel 101, and the middle part between the two sides of the valve core 2 in interference fit with the valve body channel 101 is in clearance fit with the valve body channel 101. In the initial state, the fire extinguishing agent outlet 103 is located in the area between one end of the valve body channel 101 and the valve core 2, that is, the space in the valve body channel 101 where the spring is located in the initial state when the valve core 2 is pushed against by the spring. The fire extinguishing agent inlet 102 is located in the area where the valve core 2 is in clearance fit with the valve body channel 101. Through the part of the valve core 2 in interference fit with the valve body channel 101, the communication state between the fire extinguishing agent outlet 103 and the fire extinguishing agent inlet 102 is isolated. When the valve core 2 is pushed and moved, the fire extinguishing agent outlet 103 and the fire extinguishing agent inlet 102 are both located in the area where the valve core 2 is in clearance fit with the valve body channel 101. The way in which the valve core 2 and the valve body channel 101 achieve interference fit is that the outer surfaces of the two sides of the valve core 2 along the extension direction of the valve body channel 101 are provided with sealing layers in interference fit with the valve body channel 101. Under the design of this structure of the valve core 2, the side of the valve core 2 close to the starting valve 3 is always sealed by the sealing layer, so that the pressure medium released by the pressure release device cannot affect the space in the valve body channel 101 where the valve core 2 is in clearance fit with the valve body channel 101, preventing the pressure released by the pressure release device from affecting the fire extinguishing agent outlet 103 and the fire extinguishing agent inlet 102. Based on the fact that the valve core 2 needs to play a sealing role and also needs to move in the valve body channel 101, the friction between the valve core 2 and the valve body channel 101, that is, the friction between the sealing layer and the valve body channel 101, should be appropriately adjusted according to the pressure released by the pressure release device and the pushing force of the valve rod 302. For example, when the valve core 2 needs to be easily pushed, the sealing layer is selected to be a soft rubber sealing ring. Moreover, the size of the clearance distance between the middle part of the valve core 2 and the valve body channel 101 in clearance fit can change the flow of the fire extinguishing agent, so that appropriate valve core 2 can be selected according to the actual situation to be applicable to more different application scenarios.

[0022] Further, the fire extinguishing agent inlet 102 is connected with the containing bottle 5, which can be an existing fire extinguishing agent tank with pressure and fire extinguishing agent, so that the present application becomes a valve for the existing fire extinguishing agent tank, and after being retrofitted in combination with any existing fire extinguishing agent tank, the double control function can be obtained.

[0023] Further, when the existing fire extinguishing agent tank is connected, after the fire extinguishing agent in the fire extinguishing agent tank is used up, a new fire extinguishing agent tank needs to be replaced. In order to save costs and make the containing bottle 5 as the fire extinguishing agent tank reusable, the area where the valve body channel 101 and the valve core 2 are in clearance fit is also provided with a gas filling port 104. The fire extinguishing agent and pressure are filled through the gas filling port 104. The fire extinguishing agent and pressure pass through the area where the valve body channel 101 and the valve core 2 are in clearance fit, enter the containing bottle 5 from the fire extinguishing agent inlet 102, so that the containing bottle 5 can be reused without frequent replacement.

[0024] Further, as the valve core 2 moves in the valve body channel 101, the valve core 2 after moving can cause the inflation port 104 to be exposed in the pressure range released by the pressure release device, in order to prevent the pressure released by the pressure release device from leaking from the inflation port 104, the inflation port 104 is provided with a one-way valve core 2. When inflating, the external pressure overcomes the resistance to open the one-way valve core 2, forming a forward flow channel; when the external pressure is removed, the internal pressure of the system will immediately push the one-way valve core 2 to close, realizing reliable reverse sealing, so as to ensure that the internal medium does not leak. Based on the anti-backflow setting of the inflation port 104 with the one-way valve core 2, even if the inflation port 104 is exposed in the pressure range released by the pressure release device after the valve core 2 moves, the pressure of the pressure release device will not flow out of the inflation port 104, so the specific position of the inflation port 104 connected to the valve body channel 101 can be freely selected.

[0025] Further, in order to monitor the pressure in the containing bottle 5, the area where the valve body channel 101 and the valve core 2 are gap-fitted is also provided with a pressure sensing device 4, such as a pressure gauge. In order to monitor the pressure in the containing bottle 5 connected to the valve body channel 101 by monitoring the pressure in the area where the valve body channel 101 and the valve core 2 are gap-fitted, so as to supplement the pressure to the containing bottle 5 through the inflation port 104 in time when the pressure in the containing bottle 5 is insufficient.

[0026] Further, in order to solve the problem that the pressure in the containing bottle 5 may exceed the standard, the area where the valve body channel 101 and the valve core 2 are gap-fitted is also provided with an overpressure relief device 6, which adopts a conventional existing technology that can automatically release pressure when the pressure exceeds a threshold value, for preventing the safety risk of the container caused by the abnormal rise of the pressure in the fire extinguishing agent container.

[0027] Further, based on the fact that the communication state of the fire extinguishing agent inlet 102 and the fire extinguishing agent outlet 103 is isolated by the valve core 2, one end of the valve body channel 101, i.e. the end away from the starting valve 3, can be sealed or not sealed. In order to control the position of the valve core 2 in the valve body channel 101, a regulating screw 8 is threadedly connected to one end of the valve body channel 101 for controlling the initial position of the valve core 2 in the valve body channel 101. A spring is connected to the regulating screw 8, and the regulating screw 8 is rotated by threads to change the position of the regulating screw 8 in the valve body channel 101, so as to push the valve core 2 in the valve body channel 101 by the spring.

[0028] Further, the control method of the fire extinguishing container valve with the above-mentioned multiple controls is also included, which comprises the following steps.

[0029] S1. Connect the fire extinguishing agent outlet 103 with the external injection device, connect the fire extinguishing agent inlet 102 with the external fire extinguishing agent source, connect the starting interface 303 of the starting valve 3 with the external pressure release device, and connect the pressure release device with the external control system electric signal.

[0030] Wherein the external injection device is selected according to the specific location of the container valve, for example, when the container valve is used as a switch valve of a fire extinguishing system, the container valve is located far away from the fire site, and the external injection device is a flow pipe of the fire extinguishing agent; when the container valve is used as an opening valve of the fire extinguishing agent tank, the container valve is located at the same site as the fire extinguishing agent tank, and the fire extinguishing agent outlet 103 is directly connected to the nozzle. The external fire extinguishing source connected to the fire extinguishing agent inlet 102 can be a fire extinguishing agent input pipe, a finished fire extinguishing agent tank or the above-mentioned containing bottle 5. The pressure release device connected to the starting interface 303 selects a conventional pressure release device such as hydraulic or pneumatic pressure according to actual needs, for example, an electric explosion starting device.

[0031] The electrical signal of the external control system can be a direct electrical signal connection, which starts the pressure release device to release pressure through the control button; or it can be a wireless electrical signal connection, which controls the pressure release device to release pressure by sending a wireless electrical signal through remote control.

[0032] After the connection with the external device is set, the next step is performed.

[0033] S2. Detect the overall state of the valve body and the starting valve and initialize. Including the sealing state of each interface of the container valve and the starting valve 3 such as the fire extinguishing agent outlet 103, the fire extinguishing agent inlet 102, the starting interface 303, the electrical signal connection state of the external control system and the pressure release device, whether the connection between the valve body 1 and the starting valve 3 is tight to ensure that the valve body passage 101 and the starting passage 301 are in communication and sealed, etc. After the overall state detection is qualified, the initialization is performed to make the container valve enter the state of waiting for starting, and the next step is performed.

[0034] S3. Drive the pressure release device to release pressure through the electrical signal of the external control system, and the pressure flows from the starting passage 301 to the valve body 1 passage to drive the valve core 2 to move, so that the fire extinguishing agent inlet 102 is in communication with the fire extinguishing agent outlet 103, the fire extinguishing agent flows from the fire extinguishing agent inlet 102 to the fire extinguishing agent outlet 103, and the fire extinguishing agent is output from the external injection device connected to the fire extinguishing agent outlet 103. Wherein the external control system can be connected with other monitoring systems, and the other monitoring systems automatically send signals to the pressure release device through the external control system according to the preset monitoring standard to drive the opening of the pressure release device, so as to realize the automatic operation of fire extinguishing. After the pressure release device is started, the next step is performed, and the closing time of the pressure release device is determined by the next step.

[0035] S4. When the fire extinguishing operation is completed, the pressure release device is driven by the external control system to release the pressure, the valve core 2 is reset under the action of the spring, the communication state between the fire extinguishing agent inlet 102 and the fire extinguishing agent outlet 103 is blocked, and the fire extinguishing agent outlet 103 stops outputting the fire extinguishing agent. In the case where the external control system can be connected with other monitoring systems, when the monitoring data reaches the normal standard, the other monitoring systems can send a stop signal to the pressure release device through the external control system to realize the full-automatic operation of the opening of the fire extinguishing and the closing of the fire extinguishing.

[0036] After step S4 is completed, maintenance is performed according to different external fire extinguishing agent sources. If it is an external fire extinguishing agent input pipeline, no treatment is needed, because the fire extinguishing agent and the pressure for pushing the fire extinguishing agent to flow come from the external fire extinguishing agent output device of the fire extinguishing agent input pipeline source; if the external fire extinguishing agent source is a finished fire extinguishing agent tank, a new fire extinguishing agent tank needs to be replaced; if it is a containing bottle 5, the fire extinguishing agent and the pressure in the containing bottle 5 need to be replenished, and direct replacement refers to the process of the finished fire extinguishing agent tank. In the case where the inflation port 104 is provided, the fire extinguishing agent and the gas pressure are inflated from the inflation port 104, and the gas pressure can be detected from the inflation port 104 through the external gas pressure detection device. In the case where the pressure sensing device 4 is provided, whether the pressure inflation operation needs to be performed can be directly determined through the pressure sensing device 4, and whether the pressure inflated from the inflation port 104 reaches the required standard is determined. When the pressure exceeds the required standard, the pressure can be released through the inflation port 104, and in the case where the overpressure relief device 6 is provided, the pressure is directly released through the overpressure relief device 6. Therefore, after step S4 is completed, step S2 needs to be returned to be reinitialized, so as to ensure that step S3 can be smoothly executed next time, thereby realizing the reuse of the container valve. If the container valve of the present application is only used once, the process ends after step S4.

[0037] The device embodiments described above are only illustrative, wherein the units described as separate components can or can not be physically separated, and the components displayed as units can or can not be physical units, which can be located in one place or distributed on multiple network units. According to actual needs, part or all of the modules can be selected to achieve the purpose of the embodiment scheme.

[0038] In this application, unless otherwise clearly specified and limited, the terms "mounting", "setting", "connecting", "fixing", "screwing" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited, those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0039] It can be understood that those skilled in the art can make equivalent replacements or changes according to the technical solutions of the present application and the concepts of the present application, and all these changes or replacements shall belong to the protection scope of the claims attached to the present application.

Claims

1. A multiple control fire protection vessel valve characterized by, The valve body (1) of the container valve is provided with a valve body channel (101), the valve body channel (101) is provided with a valve core (2), the valve core (2) is connected to one end of the valve body channel (101) through a spring, the container valve is provided with a fire extinguishing agent outlet (103) and a fire extinguishing agent inlet (102) which are communicated to the valve body channel (101); The starting valve (3) connected with the container valve is further provided with a starting channel (301), one end of the starting channel (301) is communicated with the other end of the valve body channel (101), the valve rod (302) is slidably arranged in the starting channel (301), one end of the valve rod (302) extends from the starting channel (301) to the valve body channel (101), and the other end of the valve rod (302) extends to outside the starting valve (3); The starting valve (3) is provided with a starting interface (303) which is communicated to the starting channel (301), the outer surface of the valve rod (302) is provided with a sealing layer, and the distance between the starting interface (303) and the container valve is smaller than the distance between the sealing layer and the container valve.

2. The multiple control fire container valve of claim 1, wherein, The valve core (2) is interference-fitted with the valve body channel (101) on both sides in the extension direction of the valve body channel (101), and the middle part of the valve core (2) is clearance-fitted with the valve body channel (101); In the initial state of the valve core (2), the fire extinguishing agent outlet (103) is located in the region between one end of the valve body channel (101) and the valve core (2), and the fire extinguishing agent inlet (102) is located in the region where the valve core (2) is clearance-fitted with the valve body channel (101); After the valve core (2) moves to one end of the valve body channel (101), the fire extinguishing agent outlet (103) and the fire extinguishing agent inlet (102) are located in the region where the valve core (2) is clearance-fitted with the valve body channel (101).

3. The multiple control fire container valve of claim 2, wherein, The outer surface of the valve core (2) on both sides in the extension direction of the valve body channel (101) is provided with a sealing layer which is interference-fitted with the valve body channel (101).

4. The multiple control fire container valve of claim 1, wherein, The fire extinguishing agent inlet (102) is connected with a containing bottle (5).

5. The multiple control fire container valve of claim 4, wherein, The valve body channel (101) is provided with an inflation port (104), and in the initial state of the valve core (2), the inflation port (104) is located in the region where the valve core (2) is clearance-fitted with the valve body channel (101).

6. The multiple control fire container valve of claim 2, wherein, The inflation port (104) is provided with a one-way valve core (2).

7. The multiple control fire container valve of claim 2, wherein, In the initial state of the valve core (2), the region where the valve body channel (101) is clearance-fitted with the valve core (2) is provided with a pressure sensing device (4).

8. The multiple control fire container valve of claim 5, wherein, In the initial state of the valve core (2), the region where the valve body channel (101) is clearance-fitted with the valve core (2) is provided with an overpressure relief device (6).

9. The multiple control fire container valve of claim 1, wherein, One end of the valve body channel (101) is provided with an adjusting screw (8), and the valve core (2) is connected with the adjusting screw (8) through the spring.

10. A method of controlling a multi-controlled container valve, applied to the multi-controlled container valve according to any one of claims 1 to 9, characterized by, The method comprises the following steps: S1. connecting the extinguishing agent outlet (103) with an external injection device, connecting the extinguishing agent inlet (102) with an external extinguishing agent source, connecting the actuation interface (303) of the actuation valve (3) with an external pressure release device, and connecting the pressure release device with an external control system by electrical signal; S2. detecting the overall state of the valve body (1) of the container valve and the actuation valve (3) and initializing; S3. driving the pressure release device to release pressure by the electrical signal of the external control system, and the pressure flows from the actuation channel (301) to the valve body channel (101) to drive the valve core (2) to move, so that the extinguishing agent inlet (102) is in communication with the extinguishing agent outlet (103), the extinguishing agent flows from the extinguishing agent inlet (102) to the extinguishing agent outlet (103), and the extinguishing agent is output from the external injection device connected with the extinguishing agent outlet (103); S4. when the extinguishing operation is completed, the pressure release device is driven to release the pressure by the electrical signal of the external control system, the valve core (2) is reset under the action of the spring, the communication state of the extinguishing agent inlet (102) and the extinguishing agent outlet (103) is blocked, and the output of the extinguishing agent from the extinguishing agent outlet (103) is stopped.

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