Container valve and fire extinguishing equipment

Abstract

The invention relates to the technical field of valves, and particularly discloses a container valve and fire extinguishing equipment. The container valve comprises a valve body, a piston assembly, a valve opening mechanism and a driving rod. A valve cavity is formed in the valve body, and an air inlet, an air outlet, an air channel and an exhaust port are formed in the valve cavity; the valve opening mechanism comprises a valve seat and a valve rod. The end, provided with the exhaust port, of the valve body, the valve seat and the upper end of the piston assembly define an air chamber. A first mounting cavity is formed in the valve seat, an inlet of the first mounting cavity communicates with an outlet of the gas channel, an outlet of the first mounting cavity communicates with the gas chamber, the valve rod is slidably arranged in the first mounting cavity, and high-pressure gas flowing into the first mounting cavity from the gas channel can make the valve rod block the outlet of the first mounting cavity. When the container valve is opened, the driving rod drives the valve rod to move downwards and close the exhaust port, high-pressure gas in the gas channel enters the gas chamber through the first mounting cavity to push the piston assembly to open the gas inlet, then the valve is opened, the fire extinguishing agent can only be discharged from the gas outlet after the valve is opened, and waste is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of valves, and in particular to a container valve and fire extinguishing equipment. Background Art

[0002] A container valve, also known as a cylinder head valve, can be installed at the outlet of a cylinder storing fire extinguishing agents. Its function is to seal the fire extinguishing agent in the cylinder during normal operation and release it in the event of a fire. Traditional container valves are available in three types: manual, pneumatic, and electric. Electric valves typically use diaphragm and pressure differential designs.

[0003] The exhaust port of existing container valves with a pressure differential design is usually located above the valve. After the electromagnetic actuator is turned on, the gas in the upper cavity of the valve is discharged through the exhaust port, and the air pressure in the lower cavity of the valve pushes the piston upward, causing the valve to open. After the valve is opened, the fire extinguishing agent in the cylinder is discharged all at once. When the fire source is small, the complete discharge of the fire extinguishing agent can easily lead to a waste of fire extinguishing agent. If the fire source reignites within a short period of time, the fire extinguishing action cannot be performed again, posing a safety hazard. In addition, when the valve is opened, the exhaust of the upper cavity of the valve causes some fire extinguishing agent to be discharged from the exhaust port instead of from the valve opening used for fire extinguishing, resulting in a waste of fire extinguishing agent.

[0004] Therefore, it is urgent to propose a container valve and fire extinguishing equipment to solve the above technical problems. Summary of the Invention

[0005] According to one aspect of the present invention, a container valve is provided that can be opened and closed multiple times to meet the needs of multiple fire extinguishing operations. Furthermore, when the valve is opened, the fire extinguishing agent is discharged only from the valve's air outlet, effectively reducing waste of the agent. Furthermore, the use of an upward pressure seal improves the sealing effect as the gas pressure increases, effectively reducing the risk of fire extinguishing agent leakage.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] Container valve, comprising:

[0008] A valve body, wherein a valve cavity is provided in the valve body, an air inlet and an air outlet are respectively provided at both ends of the valve body in the axial direction, an air outlet is opened on the side of the valve body, and a gas channel is provided on the valve body, the air inlet and the gas channel are both connected to the container bottle and the valve cavity, and the air outlet and the air outlet are used to connect the valve cavity and the outside world;

[0009] a piston assembly, wherein the upper end of the piston assembly is slidably engaged with the inner peripheral wall of the valve cavity, and the lower end of the piston assembly is capable of blocking the air inlet under the air pressure of the air inlet;

[0010] The valve opening mechanism includes a valve seat and a valve stem, the valve seat being sealingly mounted in the valve cavity, an end of the valve body having the exhaust port, the valve seat, and an upper end of the piston assembly forming an air chamber; a first mounting cavity is defined in the valve seat, the inlet of the first mounting cavity being in communication with the outlet of the gas passage, and the outlet of the first mounting cavity being in communication with the air chamber; the valve stem being slidably mounted in the first mounting cavity, and the high-pressure gas flowing from the gas passage into the first mounting cavity being able to cause the valve stem to seal the outlet of the first mounting cavity through the air pressure;

[0011] a driving rod, slidably disposed in the exhaust port and arranged opposite to the valve stem;

[0012] When the container valve is opened, the driving rod drives the valve stem downward under the action of an external force and closes the exhaust port, and the high-pressure gas in the gas channel enters the gas chamber through the first installation cavity to push the piston assembly to open the gas inlet;

[0013] When the container valve is closed, the drive rod moves away from the valve stem and opens the exhaust port, the high-pressure gas in the gas chamber is discharged through the exhaust port, and the piston assembly blocks the air inlet under the air pressure at the air inlet.

[0014] Optionally, a mounting seat is sealedly mounted on the top of the valve cavity, the mounting seat is located above the valve seat and forms a first air chamber with the valve seat, the mounting seat is provided with the exhaust port, the exhaust port connects the first air chamber with the outside, and the valve seat and the upper end of the piston assembly form a second air chamber;

[0015] The valve seat is also provided with an inlet flow channel and an outlet flow channel, one end of the inlet flow channel is connected to the outlet of the gas channel, and the other end is connected to the inlet of the first installation cavity, and the outlet flow channel is connected to the first air chamber and the second air chamber.

[0016] Optionally, a notch is provided on the outer peripheral wall of the valve seat, and the notch and the inner peripheral wall of the valve cavity form a confluence cavity, and the outlet of the gas channel and one end of the inlet flow channel are both connected to the confluence cavity.

[0017] Optionally, the valve seat includes a main body, a protrusion arranged in the middle of the main body, and an annular flange arranged at the outer edge of the main body, the first mounting cavity is arranged in the protrusion and the outlet of the first mounting cavity is located at the top of the protrusion, the top of the protrusion forms a gap with the lower surface of the mounting seat, the top of the annular flange is sealed with the lower surface of the mounting seat, the annular flange, the main body and the protrusion form a first annular groove, and the first annular groove and the gap form the first air chamber.

[0018] Optionally, the outlet diameter of the first installation cavity is smaller than the diameter of the first installation cavity, the top of the valve stem is slidably disposed in the outlet of the first installation cavity, and a first annular seal is disposed on the outer sleeve of the valve stem, and the first annular seal can press against the outer edge of the outlet of the first installation cavity to seal the outlet of the first installation cavity;

[0019] And / or, a first elastic member is provided in the first installation cavity, and the first elastic member is configured to always have a tendency to drive the valve stem to block the outlet of the first installation cavity.

[0020] Optionally, a second mounting cavity opposite to the valve stem is provided on the mounting seat, and an inlet end of the second mounting cavity close to the valve stem is the exhaust port;

[0021] The driving rod includes a horizontal section, a first vertical section arranged above the horizontal section, a second vertical section and a third vertical section arranged below the horizontal section, the first vertical section being slidably arranged at the outlet end of the second installation cavity, the horizontal section being capable of abutting against the top wall of the second installation cavity, the horizontal section being provided with a first channel running through it in a horizontal direction, and the first vertical section being provided with a second channel extending in a vertical direction and connecting the first channel with the outside world;

[0022] The second vertical segment connects the horizontal segment and the third vertical segment, and the cross-sectional area of ​​the second vertical segment is larger than the cross-sectional area of ​​the third vertical segment.

[0023] A second annular seal is provided at the inlet end of the second mounting cavity. When the driving rod moves away from the valve stem, the third vertical section is loosely fitted with the second annular seal to open the exhaust port. The gas entering the second mounting cavity from the exhaust port is discharged to the outside through the first channel and the second channel. When the driving rod descends to make the third vertical section contact the valve stem and press the valve stem downward, the outer peripheral wall of the second vertical section is fitted with the second annular seal to seal the exhaust port.

[0024] Optionally, the container valve further includes a driving member, which is arranged on the valve body, and the output end of the driving member is connected to the driving rod, and the driving member is used to drive the driving rod to extend so that the driving rod presses down the valve stem, and to drive the driving rod to retract so that the driving rod is away from the valve stem.

[0025] Optionally, an annular sealing rib is provided on the inner peripheral wall of the valve cavity between the air inlet and the air outlet;

[0026] The piston assembly includes a connecting rod, a piston and a sealing seat. The piston is arranged at the upper end of the connecting rod and slides in contact with the inner circumferential wall of the valve cavity. The sealing seat is arranged at the lower end of the connecting rod. The gas in the container bottle can seal the sealing seat against the annular sealing rib under air pressure to block the air inlet.

[0027] Optionally, the sealing seat includes a seat body, a third annular seal and a pressure plate, the seat body is connected to the lower end of the connecting rod, the upper surface of the seat body is provided with a second annular groove, the third annular seal is installed in the second annular groove, the pressure plate is connected to the lower end of the connecting rod and is covered on the top of the seat body, and the pressure plate covers a portion of the third annular seal, and the portion of the third annular seal not covered by the pressure plate can be pressed against the annular sealing rib;

[0028] And / or, a partition is provided in the valve cavity, the connecting rod is slidably passed through the partition, a second elastic member is provided between the partition and the piston, and the second elastic member is configured to always have a tendency to push the piston upward so that the sealing seat moves in a direction close to the annular sealing rib.

[0029] Optionally, the valve body is further provided with a safety relief port communicating with the valve cavity, and the safety relief port is arranged horizontally and tilted upwards;

[0030] And / or, a pressure gauge is provided on the outer peripheral wall of the valve body, and a protective cover is provided above the pressure gauge.

[0031] According to another aspect of the present invention, the present invention also provides a fire extinguishing device, comprising a container bottle and a container valve described in any of the above technical solutions, wherein the air inlet and the inlet of the gas channel are both located at the lower end of the valve body, and at the lower end of the valve body, a first external thread is provided on the outer peripheral wall of the valve body, a first internal thread is provided at the bottle mouth of the container bottle, the first external thread is connected to the first internal thread, a second internal thread is provided on the peripheral wall of the air inlet, a siphon is provided in the container bottle, a second external thread is provided at one end of the siphon, the second external thread is connected to the second internal thread, and the other end of the siphon extends to the bottom of the container bottle.

[0032] The beneficial effects of the present invention are:

[0033] The present invention provides a container valve for use in a container bottle that can be filled with a high-pressure fire extinguishing agent. The container valve includes a valve body, a piston assembly, a valve opening mechanism, and a drive rod. The valve opening mechanism includes a valve seat and a valve stem. When the container valve needs to be opened for fire extinguishing, the drive rod drives the valve stem downward while closing the exhaust port. The downward movement of the valve stem opens the outlet of a first mounting cavity on the valve seat, allowing high-pressure gas in the container bottle to enter the first mounting cavity through a gas passage and then enter the air chamber through the outlet of the first mounting cavity. Because the exhaust port is closed, the gas in the air chamber is not discharged to the outside through the exhaust port. As the gas in the air chamber gradually increases, the gas pushes the piston assembly downward. The downward movement of the piston assembly opens the air inlet at the lower end of the piston assembly. At this time, the fire extinguishing agent in the container bottle can enter the valve cavity through the air inlet and then be discharged through the air outlet to extinguish the fire. By closing the exhaust port when the container valve is opened, the continuous leakage of gas in the container bottle from the exhaust port is prevented, effectively reducing the waste of fire extinguishing agent. When the container valve needs to be closed, the drive rod moves away from the valve stem and opens the exhaust port. The valve stem will block the outlet of the first installation chamber under the pressure of the gas flowing from the gas channel into the first installation chamber, preventing the gas in the gas channel from entering the gas chamber. At the same time, the gas in the gas chamber will be discharged to the outside through the exhaust port. The piston assembly moves upward under the pressure of the gas at the inlet port and finally blocks the inlet port, closing the container valve. In other words, the container valve can be opened and closed multiple times by controlling the movement of the drive rod. Compared with the solution where the fire extinguishing agent is discharged all at once, this can reduce the waste of fire extinguishing agent when the fire is small, meet the needs of multiple fire extinguishing, and reduce the risk of re-ignition.

[0034] In addition, the gas entering through the air inlet applies upward air pressure to the piston assembly to keep the piston assembly in a position to block the air inlet, thereby closing the container valve. The sealing effect is better and the risk of fire extinguishing agent leakage when the container valve is closed is effectively reduced.

[0035] The present invention also provides a fire extinguishing device comprising a container bottle and the aforementioned container valve. Due to the use of the aforementioned container valve, the fire extinguishing device can be opened and closed multiple times, meeting the needs of multiple fire extinguishing operations. Furthermore, when the valve is open, the fire extinguishing agent is discharged only from the valve outlet, effectively reducing waste of the fire extinguishing agent. When the valve is closed, the sealing effect is improved, effectively reducing the risk of fire extinguishing agent leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic structural diagram of a container valve provided in an embodiment of the present invention;

[0037] Figure 2 A cross-sectional view of a container valve provided in an embodiment of the present invention when in a closed state;

[0038] Figure 3 for Figure 2 Enlarged view at point A;

[0039] Figure 4 A cross-sectional view of a container valve in an open state provided by an embodiment of the present invention Figure 1 ;

[0040] Figure 5 for Figure 4 Enlarged view at point B;

[0041] Figure 6 A cross-sectional view of a container valve in an open state provided by an embodiment of the present invention Figure 2 .

[0042] In the picture:

[0043] 100, valve body; 101, through hole; 102, safety relief port; 1021, plug; 103, pressure gauge; 104, protective cover; 105, plugging cover; 110, valve chamber; 120, air inlet; 130, air outlet; 140, gas passage; 150, mounting seat; 151, second mounting chamber; 1511, exhaust port; 152, second annular sealing member; 160, air chamber; 161, first air chamber; 1611, gap; 1612, first annular groove; 162, second air chamber; 170, annular sealing rib; 180, partition; 190, second elastic member;

[0044] 200, piston assembly; 210, connecting rod; 220, piston; 230, sealing seat; 231, seat body; 232, third annular seal; 233, pressure plate;

[0045] 300, valve opening mechanism; 310, valve seat; 3101, main body; 3102, protrusion; 3103, annular flange; 311, first mounting cavity; 312, inlet flow channel; 313, outlet flow channel; 314, confluence cavity; 320, valve stem; 330, first annular seal; 340, first elastic member;

[0046] 400, driving rod; 410, horizontal section; 411, first channel; 420, first vertical section; 421, second channel; 430, second vertical section; 440, third vertical section. DETAILED DESCRIPTION

[0047] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0048] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0049] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0050] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0051] This embodiment provides a container valve for storing fire extinguishing agent in a container bottle. This container valve can be opened and closed multiple times to meet the needs of multiple fire extinguishing operations. Furthermore, when the valve is opened, the fire extinguishing agent is discharged only from the valve's air outlet, effectively reducing waste. Furthermore, the use of an upward pressure seal ensures that the greater the gas pressure, the better the sealing effect, effectively reducing the risk of fire extinguishing agent leakage.

[0052] It is worth noting that the container valve is not limited to being used on container bottles for storing fire extinguishing agents.

[0053] Specifically, if Figure 1-Figure 3 As shown, the container valve includes a valve body 100 , a piston assembly 200 , a valve opening mechanism 300 and a driving rod 400 .

[0054] The valve body 100 is provided with a valve cavity 110, with an air inlet 120 and an exhaust port 1511 provided at both ends of the valve body 100 in the axial direction, and an air outlet 130 provided on the side of the valve body 100. A gas channel 140 is provided on the valve body 100. The air inlet 120 and the air channel 140 both connect the container bottle and the valve cavity 110, while the exhaust port 1511 and the air outlet 130 are used to connect the valve cavity 110 with the outside world. That is, the gas (fire extinguishing agent) in the container bottle can enter the valve cavity 110 through the air inlet 120 and the air channel 140, and the gas (fire extinguishing agent) in the valve cavity 110 can be discharged through the air outlet 130 and the exhaust port 1511. In this embodiment, the gas (fire extinguishing agent) discharged from the air outlet 130 is used to extinguish the fire. Alternatively, in one possible embodiment, the gas channel 140 is located on one side of the valve cavity 110 and extends along the axial direction of the valve body 100.

[0055] The upper end of the piston assembly 200 slides against the inner circumferential wall of the valve chamber 110, and the lower end of the piston assembly 200 can seal the air inlet 120 under the air pressure of the air inlet 120. In other words, the greater the air pressure exerted on the piston assembly 200 by the gas in the container, the better the sealing performance of the piston assembly 200, reducing the risk of gas (fire extinguishing agent) leakage when the container valve is closed.

[0056] The valve opening mechanism 300 includes a valve seat 310 and a valve stem 320. The valve seat 310 is sealed and mounted within the valve cavity 110. The valve body 100 is provided with an exhaust port 1511 at one end. The valve seat 310 and the upper end of the piston assembly 200 form an air chamber 160. A first mounting cavity 311 is defined within the valve seat 310. The inlet of the first mounting cavity 311 communicates with the outlet of the gas passage 140, and the outlet of the first mounting cavity 311 communicates with the air chamber 160. The valve stem 320 is slidably mounted within the first mounting cavity 311. High-pressure gas flowing from the gas passage 140 into the first mounting cavity 311 can, through its pressure, cause the valve stem 320 to seal the outlet of the first mounting cavity 311.

[0057] The drive rod 400 is slidably disposed within the exhaust port 1511 and is disposed opposite the valve stem 320. The drive rod 400 is configured to press the valve stem 320 downward or away from the valve stem 320 in response to an external force. When the drive rod 400 presses the valve stem 320 downward, the exhaust port 1511 is blocked. When the drive rod 400 moves away from the valve stem 320, the exhaust port 1511 is opened.

[0058] Alternatively, in one possible embodiment, the air inlet 120 and the entrance of the gas channel 140 are both located at the lower end of the valve body 100. A first external thread is provided on the outer peripheral wall of the valve body 100, and a first internal thread is provided at the mouth of the container bottle, the first external thread being connected to the first internal thread. A second internal thread is provided on the peripheral wall of the air inlet 120, and a siphon is provided in the container bottle. One end of the siphon has a second external thread, which is connected to the second internal thread, and the other end of the siphon extends to the bottom of the container bottle.

[0059] The container bottle is filled with perfluorohexanone fire extinguishing agent. After the perfluorohexanone fire extinguishing agent is filled, the lower part of the container bottle is filled with fire extinguishing agent and the upper part is filled with high-pressure nitrogen. A siphon extends into the lower part of the container bottle to absorb the fire extinguishing agent, while the high-pressure nitrogen enters the gas channel 140 to open the valve.

[0060] For ease of understanding, the working principle of the container valve is briefly introduced by taking the solution of filling the container bottle with perfluorohexanone fire extinguishing agent as an example:

[0061] First, install the container valve on the container bottle in the above manner. Figure 2 and Figure 3 As shown, the control drive rod 400 is moved away from the valve stem 320. The valve stem 320, under the pressure of the high-pressure gas entering the first mounting cavity 311 through the gas passage 140, blocks the outlet of the first mounting cavity 311, preventing the high-pressure gas in the gas passage 140 from entering the gas chamber 160 and thus preventing gas from being wasted. Simultaneously, the lower end of the piston assembly 200, under the pressure of the gas at the gas inlet 120, blocks the gas inlet 120, preventing gas in the container bottle from entering the valve cavity 110, thereby maintaining the container valve in a closed state.

[0062] like Figure 4-Figure 6 As shown, when the container valve needs to be opened, the driving rod 400 is controlled to approach and press down the valve stem 320. When the driving rod 400 moves to the position of pressing down the valve stem 320, the exhaust port 1511 will be closed. After the valve stem 320 is pressed down, the outlet of the first installation cavity 311 will be opened. At this time, the high-pressure gas in the gas channel 140 enters the air chamber 160 through the first installation cavity 311. Since the exhaust port 1511 is closed, the gas in the air chamber 160 will not be discharged to the outside from the exhaust port 1511. As the gas in the air chamber 160 gradually increases, the gas will push the piston assembly 200 to move downward. The downward movement of the piston assembly 200 will cause the lower end of the piston assembly 200 to open the air inlet 120. At this time, the fire extinguishing agent in the container bottle can enter the valve cavity 110 through the air inlet 120, and then be discharged through the air outlet 130 to extinguish the fire. When the container valve is open, closing the exhaust port 1511 prevents the gas in the container from continuously leaking out of the exhaust port 1511, effectively reducing the waste of fire extinguishing agent. It will be appreciated that when the valve is open, in order to ensure that the air pressure in the air chamber 160 is higher than the air pressure at the air inlet 120 and that the piston assembly 200 can successfully move downward, the diameter of the gas passage 140 should be much smaller than the diameter of the air inlet 120.

[0063] Continue to see Figure 2 and Figure 3When the fire is extinguished and the container valve needs to be closed again, the driving rod 400 is controlled to move away from the valve stem 320, and the driving rod 400 will open the exhaust port 1511. The valve stem 320 will block the outlet of the first installation cavity 311 under the pressure of the gas flowing in from the gas channel 140, so that the gas in the gas channel 140 cannot enter the air chamber 160. At the same time, the gas in the air chamber 160 will be discharged to the outside through the exhaust port 1511. As the gas is discharged to the outside, the thrust exerted by the gas in the air chamber 160 on the piston assembly 200 gradually decreases. When the air pressure at the air inlet 120 is greater than the air pressure in the air chamber 160, the piston assembly 200 will gradually move up and eventually return to the position of blocking the air inlet 120, so that the container valve is closed.

[0064] This container valve can be opened and closed multiple times by controlling the movement of the drive rod 400. Compared to a solution where the fire extinguishing agent is discharged completely upon a single opening, this reduces waste of fire extinguishing agent when the fire is relatively small, meets the needs of multiple fire extinguishing operations, and reduces the risk of re-ignition. Furthermore, gas entering through the air inlet 120 exerts upward pressure on the piston assembly 200, keeping it in a position that blocks the air inlet 120 and closes the container valve. This provides a good sealing effect and effectively reduces the risk of fire extinguishing agent leakage when the container valve is closed.

[0065] It is understood that each time the container valve is opened and closed, it is a fire extinguishing process. Figure 2 、 Figure 4 and Figure 6 It can be understood that the fire extinguishing agent in the container bottle can enter the air inlet 120 from the inlet end of the air inlet 120 connected thereto, and the lower end of the piston assembly 200 blocks the outlet end of the air inlet 120 connected to the valve cavity 110 under the air pressure in the air inlet 120, so as to prevent the fire extinguishing agent from entering the valve cavity 110.

[0066] Further, see Figure 3 and Figure 5 In one possible embodiment, a mounting seat 150 is sealably mounted on the top of the valve chamber 110. The mounting seat 150 is located above the valve seat 310 and forms a first air chamber 161 with the valve seat 310. The mounting seat 150 is provided with an exhaust port 1511, which connects the first air chamber 161 with the outside world. The valve seat 310 and the upper end of the piston assembly 200 form a second air chamber 162. The valve seat 310 is also provided with an inlet flow channel 312 and an outlet flow channel 313. One end of the inlet flow channel 312 is connected to the outlet of the gas channel 140, and the other end is connected to the inlet of the first mounting chamber 311. The outlet flow channel 313 connects the first air chamber 161 with the second air chamber 162.

[0067] Continue to see Figure 3At this point, the container valve is closed, the drive rod 400 is away from the valve stem 320, and the exhaust port 1511 is open. High-pressure gas flowing out of the outlet of the gas channel 140 enters the inlet flow channel 312 and then enters the first mounting cavity 311 through the inlet flow channel 312. This thrust is applied to the valve stem 320 in the first mounting cavity 311, causing the valve stem 320 to block the outlet of the first mounting cavity 311. In other words, after the high-pressure gas flows into the first mounting cavity 311, it is intercepted by the valve stem 320, preventing it from entering the first air chamber 161 and leaking out of the exhaust port 1511.

[0068] Continue to see Figure 5 At this time, the container valve is in the open state, the driving rod 400 presses the valve stem 320 downward and blocks the exhaust port 1511. After the valve stem 320 is pressed downward, the outlet of the first installation cavity 311 is opened, and the high-pressure gas is discharged from the outlet of the first installation cavity 311 into the first air chamber 161, and then enters the second air chamber 162 through the outlet flow channel 313. Since the exhaust port 1511 is closed, the gas in the second air chamber 162 will gradually increase. When the air pressure in the second air chamber 162 is greater than the air pressure at the air inlet 120, the piston assembly 200 will move downward to open the air inlet 120. Figure 4 and Figure 6 As shown, at this time, the fire extinguishing agent can enter the valve cavity 110 from the air inlet 120 and then be discharged from the air outlet 130 connected to the valve cavity 110 for fire extinguishing.

[0069] The high-pressure gas in the gas channel 140 is guided through the first air chamber 161, the second air chamber 162, the inlet flow channel 312 and the outlet flow channel 313, which not only ensures the reliability of valve opening, but also avoids the leakage of high-pressure gas when the valve is opened. The structure is simple and the control is convenient.

[0070] The drive rod 400 is assembled by arranging the mounting seat 150 on the top of the valve chamber 110 . Compared with a structure in which the mounting seat 150 and the valve body 100 are integrated, the assembly of the drive rod 400 is facilitated.

[0071] Optionally, continue with Figure 3 In one possible embodiment, a notch is provided on the outer circumferential wall of the valve seat 310. The notch and the inner circumferential wall of the valve chamber 110 form a confluence cavity 314. The outlet of the gas channel 140 and one end of the inlet flow channel 312 are both connected to the confluence cavity 314. This arrangement allows the gas channel 140 and the inlet flow channel 312 to be connected simply by installing the valve seat 310, resulting in easy assembly, a simple structure, and ease of processing.

[0072] Optionally, continue with Figure 3 and Figure 5In one possible embodiment, the valve seat 310 includes a main body 3101, a protrusion 3102, and an annular flange 3103. The protrusion 3102 is disposed in the middle of the main body 3101. The first mounting cavity 311 is disposed within the protrusion 3102, and the outlet of the first mounting cavity 311 is located at the top of the protrusion 3102. A gap 1611 is formed between the top of the protrusion 3102 and the lower surface of the mounting seat 150, indicating that the outlet of the first mounting cavity 311 is in communication with the gap 1611. The annular flange 3103 is disposed at the outer edge of the main body 3101. The top of the annular flange 3103 is sealedly connected to the lower surface of the mounting seat 150. The annular flange 3103, the main body 3101, and the protrusion 3102 define a first annular groove 1612. The first annular groove 1612 and the gap 1611 form the first air chamber 161. The valve seat 310 has a simple structure and is easy to manufacture.

[0073] Further, see Figure 3 and Figure 5 The outlet diameter of the first installation cavity 311 is smaller than the diameter of the first installation cavity 311. The top of the valve stem 320 is slidably disposed within the outlet of the first installation cavity 311. A first annular seal 330 is disposed on the outer surface of the valve stem 320. The first annular seal 330 can press against the outer edge of the outlet of the first installation cavity 311 to seal the outlet of the first installation cavity 311. The first annular seal 330 cooperates with the outer edge of the outlet of the first installation cavity 311 to seal the outlet of the first installation cavity 311. This simple structure allows for limiting the position of the valve stem 320.

[0074] Optionally, continue with Figure 3 and Figure 5 In one possible embodiment, a first elastic member 340 is disposed within the first mounting cavity 311. The first elastic member 340 is configured to always tend to drive the valve stem 320 to block the outlet of the first mounting cavity 311. Specifically, when the driving rod 400 moves away from the valve stem 320, the valve stem 320 is simultaneously pushed by the first elastic member 340 and the high-pressure gas within the first mounting cavity 311, causing the valve stem 320 to move upward and block the outlet of the first mounting cavity 311, thereby improving the sealing performance of the container valve.

[0075] In this embodiment, the first installation cavity 311 extends in the vertical direction, the entrance of the first installation cavity 311 is located on its side, one end of the first elastic member 340 abuts against the bottom wall of the first installation cavity 311, and the other end of the first elastic member 340 abuts against the bottom of the valve stem 320.

[0076] Further, see Figure 3 and Figure 5 The mounting seat 150 is provided with a second mounting cavity 151 opposite to the valve stem 320 , and the inlet end of the second mounting cavity 151 close to the valve stem 320 is an exhaust port 1511 .

[0077] The drive rod 400 is slidably disposed within the second mounting cavity 151. Specifically, the drive rod 400 includes a horizontal section 410, a first vertical section 420 disposed above the horizontal section 410, a second vertical section 430 disposed below the horizontal section 410, and a third vertical section 440. The first vertical section 420 is slidably disposed at the outlet of the second mounting cavity 151, while the horizontal section 410 is capable of abutting the top wall of the second mounting cavity 151. This interaction between the horizontal section 410 and the top wall of the mounting cavity limits the travel of the drive rod 400 away from the valve stem 320, preventing the drive rod 400 from disengaging from the second mounting cavity 151.

[0078] The horizontal section 410 is provided with a first channel 411 running horizontally through it. The first vertical section 420 is provided with a second channel 421 extending vertically and connecting the first channel 411 with the outside world. This allows gas within the second mounting cavity 151 to be discharged to the outside world through the first channel 411 and the second channel 421. The second vertical section 430 connects the horizontal section 410 and the third vertical section 440. The cross-sectional area of ​​the second vertical section 430 is larger than that of the third vertical section 440. This means that the third vertical section 440 is located close to the valve stem 320 and directly contacts the valve stem 320 when the valve stem 320 is depressed. A second annular seal 152 is provided at the inlet end of the second installation cavity 151. When the driving rod 400 moves away from the valve stem 320, the third vertical section 440 is clearance-matched with the second annular seal 152 to open the exhaust port 1511. At this time, the gas entering the second installation cavity 151 from the exhaust port 1511 is discharged to the outside through the first channel 411 and the second channel 421. When the driving rod 400 descends to make the third vertical section 440 contact the valve stem 320 and press the valve stem 320 downward, the outer peripheral wall of the second vertical section 430 is fitted against the second annular seal 152 to block the exhaust port 1511. At this time, the gas cannot enter the second installation cavity 151.

[0079] The exhaust port 1511 can be opened and closed by controlling the descent and ascent of the drive rod 400, resulting in a simple structure and easy control. Furthermore, the ingenious arrangement of the first channel 411 and the second channel 421 on the drive rod 400 ensures the stability of the sliding fit between the first vertical section 420 and the outlet of the second mounting cavity 151 while also ensuring that gas entering the second mounting cavity 151 when the exhaust port 1511 is opened can be smoothly discharged to the outside world, thus simplifying the component structure.

[0080] Optionally, the container valve further includes a driving member (not shown in the figure), which is arranged on the valve body 100, and the output end of the driving member is connected to the driving rod 400. The driving member is used to drive the driving rod 400 to extend so that the driving rod 400 presses down the valve stem 320, and is used to drive the driving rod 400 to retract so that the driving rod 400 is away from the valve stem 320.

[0081] In a possible embodiment, the driving member may be disposed on the mounting base 150 and connected to the mounting base 150 by a threaded connection.

[0082] Alternatively, the driving member may be an electromagnetic actuator, the piston rod of which is connected to the driving rod 400, so as to realize electric control of the opening and closing of the container valve. Since the structure of the electromagnetic actuator is prior art, its structure will not be described in detail.

[0083] Further, see Figure 2 、 Figure 4 and Figure 6 On the inner circumferential wall of the valve cavity 110, an annular sealing rib 170 is provided between the air inlet 120 and the air outlet 130. The piston assembly 200 includes a connecting rod 210, a piston 220 and a sealing seat 230. The piston 220 is provided at the upper end of the connecting rod 210 and is slidably fitted with the inner circumferential wall of the valve cavity 110, that is, the piston 220 is used to enclose an air chamber 160 with the valve seat 310. The sealing seat 230 is provided at the lower end of the connecting rod 210. The gas in the container bottle can seal the sealing seat 230 against the annular sealing rib 170 under air pressure to block the air inlet 120. The air inlet 120 is blocked by the cooperation between the sealing seat 230 and the annular sealing rib 170. The structure is simple, easy to process, the sealing performance is good, and the piston assembly 200 can be limited.

[0084] Optionally, continue with Figure 2 、 Figure 4 and Figure 6 The sealing seat 230 includes a seat body 231, a third annular seal 232, and a pressure plate 233. The seat body 231 is connected to the lower end of the connecting rod 210. The upper surface of the seat body 231 is provided with a second annular groove. The third annular seal 232 is installed in the second annular groove. The pressure plate 233 is connected to the lower end of the connecting rod 210 and is covered on the top of the seat body 231. The pressure plate 233 covers part of the third annular seal 232. The part of the third annular seal 232 not covered by the pressure plate 233 can be pressed against the annular sealing rib 170. The cooperation between the third annular seal 232 and the annular sealing rib 170 realizes the sealing of the air inlet 120, and the sealing performance is better. In addition, by providing the pressure plate 233 to press the third annular seal 232, the stability of the installation of the third annular seal 232 is improved.

[0085] Optionally, the connecting rod 210 and the seat body 231 , as well as the connecting rod 210 and the pressure plate 233 , may be connected by threaded connection.

[0086] Further, see Figure 2 、 Figure 4 and Figure 6 A partition 180 is provided in the valve chamber 110, and a connecting rod 210 is slidably inserted into the partition 180. A second elastic member 190 is provided between the partition 180 and the piston 220. The second elastic member 190 is configured to always have a tendency to push the piston 220 upward, so that the sealing seat 230 moves toward the direction of the annular sealing rib 170. That is, when the container valve is closed, the piston assembly 200 is simultaneously pushed upward by the second elastic member 190 and the air pressure at the air inlet 120, and finally the sealing seat 230 is sealed against the annular sealing rib 170. This further improves the sealing performance of the container valve. In addition, the partition 180 can not only fix the second elastic member 190, but also guide the movement of the connecting rod 210, which is conducive to improving the stability and smoothness of the movement of the piston assembly 200 in the valve chamber 110.

[0087] Optionally, in a possible embodiment, one end of the second elastic member 190 abuts against the partition 180 , and the other end of the second elastic member 190 abuts against the piston 220 .

[0088] Optionally, continue with Figure 2 The partition 180 has a central hole, through which the connecting rod 210 slides and seals. This arrangement separates the valve chamber 110 into two independent chambers, with the air outlet 130 located in the lower chamber. When the valve is open, the fire extinguishing agent entering the valve chamber 110 through the air inlet 120 is blocked by the partition 180 below the piston 220, effectively preventing the fire extinguishing agent from affecting the piston 220 and ensuring reliable valve opening.

[0089] Further, see Figure 6 Due to the provision of the partition 180, a closed space is formed between the partition 180 and the piston 220. In order to ensure that the piston 220 moves downward so that the gas in the closed space can be reliably discharged and to avoid the movement of the piston 220 being hindered by the presence of gas, a through hole 101 connecting the space with the outside world is provided on the valve body 100.

[0090] Optionally, continue with Figure 1 The valve body 100 is also provided with a safety relief port 102 that communicates with the valve chamber 110. The safety relief port 102 is tilted upward from the horizontal position. This arrangement protects the operator during gas release. In one possible embodiment, the safety relief port 102 is tilted upward from the horizontal position at a 45° angle.

[0091] Optionally, continue with Figure 1 A plug 1021 is provided at the outlet of the safety relief port 102 .

[0092] Furthermore, the safety relief port 102 may be positioned on the back side of the operator's operating surface to further protect the operator.

[0093] Optionally, continue with Figure 1 A pressure gauge 103 is provided on the outer peripheral wall of the valve body 100, and a protective cover 104 is provided above the pressure gauge 103. By providing the protective cover 104 to protect the pressure gauge 103, the risk of damage to the pressure gauge 103 caused by collision with foreign objects at a high place or falling can be reduced.

[0094] It is worth noting that the working principles of the safety relief port 102 and the pressure gauge 103 are prior art, and therefore, they will not be described in detail.

[0095] Optionally, continue with Figure 6 In one possible embodiment, a blocking cap 105 is provided at the gas outlet 130. When the container valve needs to be opened for fire extinguishing, the blocking cap 105 can be manually removed. The blocking cap 105 can serve as a protective function, resolving the potential safety hazard of sudden discharge of fire extinguishing agent when the container valve is accidentally opened.

[0096] This embodiment also provides a fire extinguishing device comprising a container bottle and the aforementioned container valve. Due to the use of the aforementioned container valve, this fire extinguishing device can be opened and closed multiple times, meeting the needs of multiple fire extinguishing operations. Furthermore, when the valve is open, the fire extinguishing agent is discharged only from the valve's air outlet 130, effectively reducing waste of the fire extinguishing agent. When the valve is closed, the seal is effective, effectively reducing the risk of fire extinguishing agent leakage.

[0097] Specifically, the air inlet 120 and the entrance of the gas channel 140 are both located at the lower end of the valve body 100. A first external thread is provided on the outer circumferential wall of the valve body 100 at the lower end, and a first internal thread is provided at the mouth of the container bottle, and the first external thread and the first internal thread are connected. A second internal thread is provided on the circumferential wall of the air inlet 120, and a siphon tube is provided in the container bottle. One end of the siphon tube has a second external thread, which is connected to the second internal thread, and the other end of the siphon tube extends to the bottom of the container bottle.

[0098] The container bottle is filled with perfluorohexanone fire extinguishing agent. After the perfluorohexanone fire extinguishing agent is filled, the lower part of the container bottle is filled with fire extinguishing agent and the upper part is filled with high-pressure nitrogen. A siphon extends into the lower part of the container bottle to absorb the fire extinguishing agent, while the high-pressure nitrogen enters the gas channel 140 to open the valve.

[0099] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A container valve, characterized in that: include: A valve body (100), wherein a valve cavity (110) is provided in the valve body (100), an air inlet (120) and an air outlet (1511) are respectively provided at two ends of the valve body (100) in the axial direction, an air outlet (130) is provided on the side of the valve body (100), and a gas channel (140) is provided on the valve body (100), wherein the air inlet (120) and the gas channel (140) are both connected to the container bottle and the valve cavity (110), and the air outlet (1511) and the air outlet (130) are used to connect the valve cavity (110) and the outside world; a piston assembly (200), wherein the upper end of the piston assembly (200) is slidably engaged with the inner peripheral wall of the valve cavity (110), and the lower end of the piston assembly (200) is capable of sealing the air inlet (120) under the air pressure of the air inlet (120); The valve opening mechanism (300) comprises a valve seat (310) and a valve stem (320), wherein the valve seat (310) is sealed and installed in the valve cavity (110), the valve body (100) is provided with one end of the exhaust port (1511), and the valve seat (310) and the upper end of the piston assembly (200) form an air chamber (160); a first installation cavity (311) is provided in the valve seat (310), the inlet of the first installation cavity (311) is communicated with the outlet of the gas channel (140), and the outlet of the first installation cavity (311) is communicated with the air chamber (160), and the valve stem (320) is slidably arranged in the first installation cavity (311), and the high-pressure gas flowing from the gas channel (140) into the first installation cavity (311) can cause the valve stem (320) to block the outlet of the first installation cavity (311) through the gas pressure; a driving rod (400) slidably disposed in the exhaust port (1511) and disposed opposite to the valve stem (320); When the container valve is opened, the driving rod (400) drives the valve stem (320) downward under the action of an external force and closes the exhaust port (1511), and the high-pressure gas in the gas channel (140) enters the gas chamber (160) through the first installation cavity (311) to push the piston assembly (200) to open the gas inlet (120); When the container valve is closed, the driving rod (400) moves away from the valve stem (320) and opens the exhaust port (1511), the high-pressure gas in the gas chamber (160) is discharged through the exhaust port (1511), and the piston assembly (200) blocks the air inlet (120) under the air pressure at the air inlet (120).

2. The container valve according to claim 1, characterized in that The top of the valve cavity (110) is sealed with a mounting seat (150), the mounting seat (150) is located above the valve seat (310) and forms a first air chamber (161) with the valve seat (310), the mounting seat (150) is provided with the exhaust port (1511), the exhaust port (1511) communicates with the first air chamber (161) and the outside, and the valve seat (310) and the upper end of the piston assembly (200) form a second air chamber (162); The valve seat (310) is further provided with an inlet flow channel (312) and an outlet flow channel (313), one end of the inlet flow channel (312) is connected to the outlet of the gas channel (140), and the other end is connected to the inlet of the first installation cavity (311), and the outlet flow channel (313) is connected to the first air chamber (161) and the second air chamber (162).

3. The container valve according to claim 2, characterized in that A notch is provided on the outer peripheral wall of the valve seat (310), and the notch and the inner peripheral wall of the valve cavity (110) form a confluence cavity (314), and the outlet of the gas channel (140) and one end of the inlet flow channel (312) are both connected to the confluence cavity (314).

4. The container valve according to claim 2, characterized in that The valve seat (310) includes a main body (3101), a protrusion (3102) arranged in the middle of the main body (3101) and an annular flange (3103) arranged at the outer edge of the main body (3101), the first installation cavity (311) is arranged in the protrusion (3102) and the outlet of the first installation cavity (311) is located at the top of the protrusion (3102), the top of the protrusion (3102) and the lower surface of the mounting seat (150) form a gap (1611), the top of the annular flange (3103) is sealed with the lower surface of the mounting seat (150), the annular flange (3103), the main body (3101) and the protrusion (3102) surround a first annular groove (1612), and the first annular groove (1612) and the gap (1611) form the first air chamber (161).

5. The container valve according to claim 1, wherein: The outlet diameter of the first installation cavity (311) is smaller than the diameter of the first installation cavity (311); the top of the valve stem (320) is slidably arranged in the outlet of the first installation cavity (311); the valve stem (320) is provided with a first annular seal (330) on its outer sleeve; the first annular seal (330) can press against the outer edge of the outlet of the first installation cavity (311) to block the outlet of the first installation cavity (311); And / or, a first elastic member (340) is provided in the first installation cavity (311), and the first elastic member (340) is configured to always have a tendency to drive the valve stem (320) to block the outlet of the first installation cavity (311).

6. The container valve according to claim 2, wherein: The mounting seat (150) is provided with a second mounting cavity (151) opposite to the valve stem (320), and the inlet end of the second mounting cavity (151) close to the valve stem (320) is the exhaust port (1511); The driving rod (400) comprises a horizontal section (410), a first vertical section (420) arranged above the horizontal section (410), a second vertical section (430) and a third vertical section (440) arranged below the horizontal section (410); the first vertical section (420) is slidably arranged at the outlet end of the second installation cavity (151); the horizontal section (410) is capable of abutting against the top wall of the second installation cavity (151); a first channel (411) is provided in the horizontal section (410) and runs through the horizontal section; a second channel (421) is provided in the first vertical section (420) and extends in the vertical direction and connects the first channel (411) with the outside; The second vertical section (430) connects the horizontal section (410) and the third vertical section (440), and the cross-sectional area of ​​the second vertical section (430) is greater than the cross-sectional area of ​​the third vertical section (440). A second annular seal (152) is provided at the inlet end of the second installation cavity (151); when the driving rod (400) is away from the valve stem (320), the third vertical section (440) cooperates with the gap (1611) of the second annular seal (152) to open the exhaust port (1511); the gas entering the second installation cavity (151) from the exhaust port (1511) is discharged to the outside through the first channel (411) and the second channel (421); when the driving rod (400) descends to make the third vertical section (440) contact the valve stem (320) and press the valve stem (320) downward, the outer peripheral wall of the second vertical section (430) fits against the second annular seal (152) to block the exhaust port (1511).

7. The container valve according to any one of claims 1 to 6, characterized in that: The container valve further comprises a driving member, which is arranged on the valve body (100), and the output end of the driving member is connected to the driving rod (400). The driving member is used to drive the driving rod (400) to extend so that the driving rod (400) presses down the valve stem (320), and to drive the driving rod (400) to retract so that the driving rod (400) is away from the valve stem (320).

8. The container valve according to any one of claims 1 to 6, characterized in that: An annular sealing rib (170) is provided on the inner peripheral wall of the valve cavity (110) between the air inlet (120) and the air outlet (130); The piston assembly (200) includes a connecting rod (210), a piston (220) and a sealing seat (230). The piston (220) is arranged at the upper end of the connecting rod (210) and is slidably fitted with the inner peripheral wall of the valve cavity (110). The sealing seat (230) is arranged at the lower end of the connecting rod (210). The gas in the container bottle can cause the sealing seat (230) to be sealed against the annular sealing rib (170) under air pressure to block the air inlet (120).

9. The container valve according to claim 8, characterized in that The sealing seat (230) includes a seat body (231), a third annular seal (232) and a pressure plate (233), wherein the seat body (231) is connected to the lower end of the connecting rod (210), and a second annular groove is provided on the upper surface of the seat body (231), and the third annular seal (232) is installed in the second annular groove, and the pressure plate (233) is connected to the lower end of the connecting rod (210) and is covered on the top of the seat body (231), and the pressure plate (233) covers a part of the third annular seal (232), and the part of the third annular seal (232) not covered by the pressure plate (233) can be pressed against the annular sealing rib (170); And / or, a partition (180) is provided in the valve chamber (110), the connecting rod (210) is slidably passed through the partition (180), and a second elastic member (190) is provided between the partition (180) and the piston (220), and the second elastic member (190) is configured to always have a tendency to push the piston (220) upward so that the sealing seat (230) moves in a direction close to the annular sealing rib (170).

10. The container valve according to any one of claims 1 to 6, characterized in that: The valve body (100) is further provided with a safety relief port (102) communicating with the valve cavity (110), and the safety relief port (102) is arranged horizontally and tilted upwards; And / or, a pressure gauge (103) is provided on the outer peripheral wall of the valve body (100), and a protective cover (104) is provided above the pressure gauge (103).

11. Fire extinguishing equipment, characterized in that, A container valve comprising a container bottle and any one of claims 1 to 10, wherein the air inlet (120) and the inlet of the gas channel (140) are both located at the lower end of the valve body (100), a first external thread is provided on the outer peripheral wall of the valve body (100) at the lower end of the valve body (100), a first internal thread is provided at the bottle mouth of the container bottle, the first external thread is connected to the first internal thread, a second internal thread is provided on the peripheral wall of the air inlet (120), a siphon is provided in the container bottle, a second external thread is provided at one end of the siphon, the second external thread is connected to the second internal thread, and the other end of the siphon extends to the bottom of the container bottle.

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