Container valve and fire extinguishing apparatus

Abstract

The application 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, an opening valve mechanism and a driving rod. The valve body is internally provided with a valve cavity, and is externally provided with an air inlet, an air outlet, a gas passage and an air outlet; the opening valve mechanism comprises a valve seat and a valve rod, and the end of the valve body provided with the air outlet, the valve seat and the upper end of the piston assembly enclose an air chamber; the valve seat is internally provided with a first mounting cavity, the inlet of the first mounting cavity is communicated with the outlet of the gas passage, the outlet of the first mounting cavity is communicated with the air chamber, and the valve rod is slidably arranged in the first mounting cavity; high-pressure gas flowing into the first mounting cavity from the gas passage can 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 air outlet, high-pressure gas in the gas passage enters the air chamber through the first mounting cavity to push the piston assembly to open the air inlet, and then the valve is opened, and the fire extinguishing agent can only be discharged from the air outlet, so that waste is reduced.

Description

Technical Field

[0001] This invention relates to the field of valve technology, and more particularly to a container valve and a fire extinguishing device. Background Technology

[0002] Container valves, also called cylinder valves, are installed at the outlet of steel cylinders storing extinguishing agents. Their function is to seal the extinguishing agent inside the cylinder under normal conditions and release it during a fire. Traditional container valves are divided into manual, pneumatic, and electric types. Among them, electric valves typically employ diaphragm and differential pressure designs.

[0003] Existing pressure-differential valve designs typically have their vents located at the top. When the electromagnetic starter is activated, gas in the upper chamber of the valve is released through the vent, while the pressure in the lower chamber pushes a piston upward, opening the valve. This releases the extinguishing agent from the cylinder all at once. When the fire is small, this complete release of extinguishing agent can lead to waste. If the fire reignites quickly, it cannot be extinguished again, posing a safety hazard. Furthermore, when the valve opens, the venting from the upper chamber causes some extinguishing agent to escape through the vent instead of the valve opening used for extinguishing, resulting in further waste.

[0004] Therefore, there is an urgent need to propose a container valve and fire extinguishing equipment to solve the above-mentioned 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, after the valve is opened, the extinguishing agent can only be discharged from the valve's outlet, effectively reducing the waste of extinguishing agent. In addition, the use of a pressure-type seal ensures that the higher the gas pressure, the better the sealing effect, effectively reducing the risk of extinguishing agent leakage.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Container valves, including:

[0008] The valve body has a valve cavity inside. The valve body has an air inlet and an air outlet at both ends in the axial direction, and an air outlet is opened on the side of the valve body. The valve body has a gas channel. The air inlet and the gas channel are connected to the container bottle and the valve cavity. The air outlet and the air outlet are used to connect the valve cavity to the outside.

[0009] A piston assembly, the upper end of which slides in conjunction with the inner peripheral wall of the valve chamber, and the lower end of which can block 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 is sealed and installed in the valve cavity. The valve body has one end with the exhaust port, and the upper end of the valve seat and the piston assembly form a gas chamber. The valve seat has a first mounting cavity. The inlet of the first mounting cavity is connected to the outlet of the gas passage, and the outlet of the first mounting cavity is connected to the gas chamber. The valve stem is slidably disposed in the first mounting cavity. High-pressure gas flowing into the first mounting cavity from the gas passage can cause the valve stem to block the outlet of the first mounting cavity through gas pressure.

[0011] A drive rod is slidably disposed within the exhaust port and positioned opposite to the valve rod;

[0012] When the container valve is opened, the drive rod drives the valve rod to move down and close the exhaust port under the action of external force. The high-pressure gas in the gas channel enters the gas chamber through the first mounting cavity to push the piston assembly to open the air 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 air 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 sealed on the top of the valve chamber, 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 and 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 air passage and an outlet air passage. One end of the inlet air passage is connected to the outlet of the gas channel, and the other end is connected to the inlet of the first mounting cavity. The outlet air passage connects the first gas chamber and the second gas chamber.

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

[0017] Optionally, the valve seat includes a main body, a central protrusion in the main body, and an annular flange at the outer edge of the main body. The first mounting cavity is disposed within 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 to the lower surface of the mounting seat. The annular flange, the main body, and the protrusion form a first annular groove. The first annular groove and the gap form the first air chamber.

[0018] Optionally, the outlet diameter of the first mounting cavity is smaller than the diameter of the first mounting cavity, the top of the valve stem is slidably disposed in the outlet of the first mounting cavity, and the valve stem is sleeved with a first annular seal, which can press against the outer edge of the outlet of the first mounting cavity to block the outlet of the first mounting cavity.

[0019] And / or, the first mounting cavity is provided with a first elastic element, which is configured to always have a tendency to drive the valve stem to block the outlet of the first mounting cavity.

[0020] Optionally, the mounting base is provided with a second mounting cavity opposite to the valve stem, and the inlet end of the second mounting cavity near the valve stem is the exhaust port;

[0021] The drive rod includes a horizontal section, a first vertical section disposed above the horizontal section, a second vertical section disposed below the horizontal section, and a third vertical section. The first vertical section is slidably disposed at the outlet end of the second mounting cavity. The horizontal section can abut against the top wall of the second mounting cavity. The horizontal section has a first channel that runs through it in the horizontal direction. The first vertical section has a second channel that extends in the vertical direction and connects the first channel with the outside.

[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] The inlet end of the second mounting cavity is provided with a second annular seal. When the drive rod moves away from the valve stem, the third vertical section is in clearance fit with the second annular seal to open the exhaust port. 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 drive rod descends to make the third vertical section contact the valve stem and press down on the valve stem, the outer peripheral wall of the second vertical section is attached to the second annular seal to block the exhaust port.

[0024] Optionally, the container valve further includes a drive element disposed on the valve body. The output end of the drive element is connected to the drive rod. The drive element is used to drive the drive rod to extend so that the drive rod presses down on the valve stem, and to drive the drive rod to retract so that the drive rod moves 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 disposed at the upper end of the connecting rod and slides against the inner peripheral wall of the valve chamber. The sealing seat is disposed at the lower end of the connecting rod. The gas in the container bottle can cause the sealing seat to press against the annular sealing rib under gas 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 covers the upper part of the seat body. The pressure plate covers part of the third annular seal. The part of the third annular seal not covered by the pressure plate can press against the annular sealing rib.

[0028] And / or, a partition is provided in the valve chamber, the connecting rod slides through the partition, and a second elastic element is provided between the partition and the piston. The second elastic element is configured to always have a tendency to push the piston upward so that the sealing seat moves toward the direction of 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 horizontally inclined upward.

[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 as described in any of the above technical solutions, wherein the air inlet and the inlet of the gas passage are both located at the lower end of the valve body, a first external thread is provided on the outer peripheral wall of the valve body at the lower end of the valve body, a first internal thread is provided at the 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 tube is provided inside the container bottle, one end of the siphon tube is provided with a second external thread, the second external thread is connected to the second internal thread, and the other end of the siphon tube extends to the bottom of the container bottle.

[0032] The beneficial effects of this invention are as follows:

[0033] This invention provides a container valve for use inside a container bottle filled with a high-pressure fire extinguishing agent. The container valve includes a valve body, a piston assembly, an opening mechanism, and a drive rod. The 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 downwards while simultaneously closing the exhaust port. The downward movement of the valve stem opens the outlet of the first mounting cavity on the valve seat. High-pressure gas from the container bottle enters the first mounting cavity through a gas channel, and then enters the gas chamber through the outlet of the first mounting cavity. Because the exhaust port is closed, the gas in the gas chamber will not escape to the outside through the exhaust port. As the gas in the gas chamber gradually increases, the gas pushes the piston assembly downwards. The downward movement of the piston assembly opens the air inlet at its lower end. At this time, the fire extinguishing agent from the container bottle can enter the valve chamber through the air inlet and then be discharged through the air outlet for fire extinguishing. By closing the exhaust port when the container valve is opened, it prevents continuous leakage of gas from the container bottle through the exhaust port, 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, under the pressure of the gas flowing into the first mounting chamber from the gas passage, blocks the outlet of the first mounting chamber, preventing gas from entering the gas chamber. Simultaneously, the gas in the gas chamber is discharged to the outside through the exhaust port. The piston assembly, under the pressure at the air inlet, moves upward and finally blocks the air inlet, thus closing the container valve. In other words, this container valve can be opened and closed multiple times by controlling the movement of the drive rod. Compared to a system where all extinguishing agent is discharged at once, this reduces the waste of extinguishing agent when the fire is small, meets the needs of multiple fire suppression operations, and reduces the risk of reignition.

[0034] Furthermore, the gas entering through the air inlet applies upward air pressure to the piston assembly, keeping the piston assembly in the position of blocking the air inlet, thereby closing the container valve. This provides a better sealing effect and effectively reduces the risk of extinguishing agent leakage when the container valve is closed.

[0035] This invention also provides a fire extinguishing device, including a container bottle and the aforementioned container valve. Because of the 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 extinguishing agent can only be discharged from the valve's outlet, effectively reducing the waste of extinguishing agent; when the valve is closed, the sealing effect is good, effectively reducing the risk of extinguishing agent leakage. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of a container valve provided in an embodiment of the present invention;

[0037] Figure 2 This is a cross-sectional view of the container valve in the closed state according to an embodiment of the present invention;

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

[0039] Figure 4 A cross-sectional view of the container valve in the open state according to 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 the container valve in the open state according to 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. Plug; 110. Valve cavity; 120. Air inlet; 130. Air outlet; 140. Gas passage; 150. Mounting base; 151. Second mounting cavity; 1511. Exhaust port; 152. Second annular seal; 160. Air chamber; 161. First air chamber; 1611. Gap; 1612. First annular groove; 162. Second air chamber; 170. Annular sealing rib; 180. Partition plate; 190. Second elastic element;

[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 air passage; 313, Outlet air passage; 314, Manifold; 320, Valve stem; 330, First annular seal; 340, First elastic element;

[0046] 400, Drive rod; 410, Horizontal section; 411, First channel; 420, First vertical section; 421, Second channel; 430, Second vertical section; 440, Third vertical section. Detailed Implementation

[0047] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Furthermore, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

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

[0051] This embodiment provides a container valve for storing a container bottle containing fire extinguishing agent. The 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 can only be discharged from the valve's outlet, effectively reducing waste. Additionally, the use of a pressure-sealed design ensures a better seal with higher gas pressure, effectively reducing the risk of fire extinguishing agent leakage.

[0052] It is worth noting that this container valve is not limited to use on containers storing fire extinguishing agents.

[0053] Specifically, such as Figures 1-3 As shown, the container valve includes a valve body 100, a piston assembly 200, a valve opening mechanism 300, and a drive rod 400.

[0054] The valve body 100 includes a valve cavity 110. An air inlet 120 and an air outlet 1511 are located at opposite ends of the valve body 100 along its axial direction. An air outlet 130 is located on the side of the valve body 100. A gas passage 140 is provided on the valve body 100. Both the air inlet 120 and the gas passage 140 connect the container bottle and the valve cavity 110. The air outlet 1511 and the air outlet 130 connect the valve cavity 110 to the outside environment. That is, the gas (extinguishing agent) in the container bottle can enter the valve cavity 110 through the air inlet 120 and the gas passage 140, and the gas (extinguishing agent) in the valve cavity 110 can be discharged through the air outlet 130 and the air outlet 1511. In this embodiment, the gas (extinguishing agent) discharged from the air outlet 130 is used for fire extinguishing. Optionally, in one possible embodiment, the gas passage 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 peripheral 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. That is, the greater the air pressure exerted by the gas inside the container on the piston assembly 200, the better the sealing performance of the piston assembly 200, reducing the risk of gas (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 installed in the valve cavity 110. The valve body 100 has an exhaust port 1511 at one end, and the valve seat 310 and the upper end of the piston assembly 200 form a gas chamber 160. The valve seat 310 has a first mounting cavity 311. The inlet of the first mounting cavity 311 is connected to the outlet of the gas passage 140, and the outlet of the first mounting cavity 311 is connected to the gas chamber 160. The valve stem 320 is slidably disposed in the first mounting cavity 311. The high-pressure gas flowing into the first mounting cavity 311 from the gas passage 140 can block the outlet of the first mounting cavity 311 by the gas pressure.

[0057] The drive rod 400 is slidably disposed within the exhaust port 1511 and opposite to the valve stem 320. The drive rod 400 is used to press down on the valve stem 320 or move away from the valve stem 320 under the drive of an external force. When the drive rod 400 presses down on the valve stem 320, it blocks the exhaust port 1511; when the drive rod 400 moves away from the valve stem 320, the exhaust port 1511 opens.

[0058] Optionally, in one possible embodiment, both the air inlet 120 and the inlet of the gas passage 140 are located at the lower end of the valve body 100. The outer peripheral wall of the valve body 100 is provided with a first external thread, and the mouth of the container bottle is provided with a first internal thread, with the first external thread connecting to the first internal thread. The peripheral wall of the air inlet 120 is provided with a second internal thread, and a siphon tube is provided inside the container bottle. One end of the siphon tube is provided with a second external thread, which connects to the second internal thread, and the other end of the siphon tube extends to the bottom of the container bottle.

[0059] The container is filled with perfluorohexanone extinguishing agent. After filling, the lower part of the container contains the extinguishing agent, and the upper part contains high-pressure nitrogen. A siphon tube extends into the lower part of the container to draw in the extinguishing agent, while the high-pressure nitrogen enters the gas passage 140 to open the valve.

[0060] To facilitate understanding, we will now take a solution where the container is filled with perfluorohexanone extinguishing agent as an example to briefly explain the working principle of the container valve:

[0061] First, install the container valve on the container bottle as described above. For example... Figure 2 and Figure 3 As shown, the control drive rod 400 moves away from the valve stem 320. Under the pressure of the high-pressure gas entering the first mounting chamber 311 through the gas channel 140, the valve stem 320 blocks the outlet of the first mounting chamber 311, preventing the high-pressure gas in the gas channel 140 from entering the gas chamber 160, thus ensuring that the gas is not wasted. At the same time, the lower end of the piston assembly 200 blocks the air inlet 120 under the air pressure at the air inlet 120, preventing the gas in the container bottle from entering the valve chamber 110, thus keeping the container valve in a closed state.

[0062] like Figures 4-6 As shown, when the container valve needs to be opened, the control drive rod 400 approaches and presses down the valve rod 320. When the drive rod 400 moves to the position of pressing down the valve rod 320, it will close the exhaust port 1511. After the valve rod 320 is pressed down, it will open the outlet of the first mounting cavity 311. At this time, the high-pressure gas in the gas channel 140 enters the gas chamber 160 through the first mounting cavity 311. Since the exhaust port 1511 is closed, the gas in the gas chamber 160 will not be discharged to the outside from the exhaust port 1511. As the gas in the gas chamber 160 gradually increases, the gas will push the piston assembly 200 to move down. 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 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 opened, it closes the exhaust port 1511, preventing continuous leakage of gas from the container bottle and effectively reducing the waste of extinguishing agent. Understandably, when the valve is opened, to ensure that the gas pressure in the gas chamber 160 is higher than the gas pressure at the inlet 120, thus ensuring the piston assembly 200 can move downwards successfully, the diameter of the gas passage 140 should be much smaller than the diameter of the inlet 120.

[0063] See also Figure 2 and Figure 3When the fire is extinguished and the container valve needs to be closed again, the control actuator 400 moves away from the valve stem 320. The actuator 400 opens the exhaust port 1511, and the valve stem 320 blocks the outlet of the first mounting cavity 311 under the pressure of the gas flowing in from the gas passage 140, preventing the gas in the gas passage 140 from entering the gas chamber 160. At the same time, the gas in the gas chamber 160 is 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 gas chamber 160 on the piston assembly 200 gradually decreases. When the gas pressure at the air inlet 120 is greater than the gas pressure in the gas chamber 160, the piston assembly 200 gradually moves upward and eventually returns to the position of blocking the air inlet 120, thus closing the container valve.

[0064] This container valve can be opened and closed multiple times by controlling the movement of the drive rod 400. Compared with the method where all extinguishing agent is discharged at once, this reduces the waste of extinguishing agent when the fire is small, meets the needs of multiple fire suppressions, and reduces the risk of reignition. Furthermore, the gas entering through the air inlet 120 applies upward pressure to the piston assembly 200, keeping the piston assembly 200 in the position of sealing the air inlet 120, thus closing the container valve. This provides a better sealing effect and effectively reduces the risk of extinguishing agent leakage when the container valve is closed.

[0065] It is understandable that each opening and closing of the container valve constitutes one fire extinguishing cycle. See also... Figure 2 , Figure 4 and Figure 6 It is understandable that the extinguishing agent in the container can enter the air inlet 120 through the inlet end connected to it. The lower end of the piston assembly 200 blocks the outlet end of the air inlet 120 connected to the valve chamber 110 under the air pressure in the air inlet 120, so as to prevent the extinguishing agent from entering the valve chamber 110.

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

[0067] See also Figure 3At this time, the container valve is in the closed state, the drive rod 400 is away from the valve stem 320, and the exhaust port 1511 is in the open state. The high-pressure gas flowing out of the outlet of the gas passage 140 will enter the inlet passage 312, and then enter the first mounting cavity 311 through the inlet passage 312, applying a thrust 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. That is, the high-pressure gas is stopped by the valve stem 320 after flowing into the first mounting cavity 311, preventing the high-pressure gas from entering the first gas chamber 161 and avoiding leakage of high-pressure gas from the exhaust port 1511.

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

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

[0070] The drive rod 400 is assembled by setting a mounting base 150 on the top of the valve cavity 110. Compared with the integrated structure of the mounting base 150 and the valve body 100, the assembly of the drive rod 400 is more convenient.

[0071] Optionally, see [link to relevant documentation] Figure 3 In one possible embodiment, the outer peripheral wall of the valve seat 310 is provided with a notch, which, together with the inner peripheral wall of the valve cavity 110, forms a manifold 314. The outlet of the gas passage 140 and one end of the inlet passage 312 are both connected to the manifold 314. With this configuration, the gas passage 140 and the inlet passage 312 can be connected simply by installing the valve seat 310, making assembly easy, and the structure simple and easy to process.

[0072] Optionally, see [link to relevant documentation] 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 located in the middle of the main body 3101. A first mounting cavity 311 is located within the protrusion 3102, and the outlet of the first mounting cavity 311 is located at the top of the protrusion 3102. The top of the protrusion 3102 forms a gap 1611 with the lower surface of the mounting base 150, meaning the outlet of the first mounting cavity 311 communicates with the gap 1611. The annular flange 3103 is located at the outer edge of the main body 3101. The top of the annular flange 3103 is sealed to the lower surface of the mounting base 150. The annular flange 3103, the main body 3101, and the protrusion 3102 form a first annular groove 1612. The first annular groove 1612 and the gap 1611 form a first air chamber 161. This valve seat 310 has a simple structure and is easy to manufacture.

[0073] Further, see also Figure 3 and Figure 5 The outlet diameter of the first mounting cavity 311 is smaller than the diameter of the first mounting cavity 311. The top of the valve stem 320 is slidably disposed within the outlet of the first mounting cavity 311. A first annular seal 330 is sleeved on the valve stem 320. The first annular seal 330 can press against the outer edge of the outlet of the first mounting cavity 311 to seal the outlet of the first mounting cavity 311. The sealing of the outlet of the first mounting cavity 311 is achieved by the cooperation between the first annular seal 330 and the outer edge of the outlet of the first mounting cavity 311. The structure is simple and can limit the position of the valve stem 320.

[0074] Optionally, see [link to relevant documentation] Figure 3 and Figure 5 In one possible embodiment, a first elastic element 340 is provided within the first mounting cavity 311. The first elastic element 340 is configured to always tend to drive the valve stem 320 to block the outlet of the first mounting cavity 311. That is, when the drive rod 400 moves away from the valve stem 320, the valve stem 320 will be simultaneously pushed by the first elastic element 340 and the high-pressure gas in 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 mounting cavity 311 extends vertically, the inlet of the first mounting cavity 311 is located on its side, one end of the first elastic member 340 abuts against the bottom wall of the first mounting cavity 311, and the other end of the first elastic member 340 abuts against the bottom of the valve stem 320.

[0076] Further, see also Figure 3 and Figure 5 The mounting base 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 near 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 end of the second mounting cavity 151, and the horizontal section 410 can abut against the top wall of the second mounting cavity 151. In this way, the travel distance of the drive rod 400 away from the valve stem 320 can be limited by the cooperation between the horizontal section 410 and the top wall of the mounting cavity, preventing the drive rod 400 from disengaging from the second mounting cavity 151.

[0078] The horizontal section 410 has a first channel 411 extending horizontally through it, and the first vertical section 420 has a second channel 421 extending vertically and connecting the first channel 411 to the outside. This allows gas in the second mounting cavity 151 to be discharged to the outside 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, and the cross-sectional area of ​​the second vertical section 430 is larger than that of the third vertical section 440. Specifically, the third vertical section 440 is close to the valve stem 320, and it directly contacts the valve stem 320 when the valve stem 320 is pressed down. The inlet end of the second mounting cavity 151 is provided with a second annular seal 152. When the drive rod 400 moves away from the valve stem 320, the third vertical section 440 is in clearance fit with the second annular seal 152 to open the exhaust port 1511. At this time, the gas entering the second mounting cavity 151 from the exhaust port 1511 is discharged to the outside through the first channel 411 and the second channel 421. When the drive rod 400 descends and the third vertical section 440 contacts the valve stem 320 and presses down the valve stem 320, the outer peripheral wall of the second vertical section 430 is attached to the second annular seal 152 to block the exhaust port 1511. At this time, the gas cannot enter the second mounting cavity 151.

[0079] The opening and closing of the exhaust port 1511 can be achieved by controlling the descent and ascent of the drive rod 400, resulting in a simple structure and easy control. Furthermore, the cleverly designed first channel 411 and second channel 421 on the drive rod 400 ensure the stability of the sliding fit between the first vertical section 420 and the outlet end of the second mounting cavity 151, while also guaranteeing that the gas entering the second mounting cavity 151 can be smoothly discharged to the outside when the exhaust port 1511 is open, thus simplifying the component structure.

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

[0081] In one possible embodiment, the drive unit can be mounted on the mounting base 150 and connected to the mounting base 150 by a threaded connection.

[0082] Optionally, the driving component can be an electromagnetic starter, with the piston rod of the electromagnetic starter connected to the drive rod 400. This enables electric control of the opening and closing of the container valve. Since the structure of the electromagnetic starter is existing technology, its structure will not be described in detail.

[0083] Further, see also Figure 2 , Figure 4 and Figure 6 An annular sealing rib 170 is provided on the inner peripheral wall of the valve chamber 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 located at the upper end of the connecting rod 210 and slides against the inner peripheral wall of the valve chamber 110, i.e., the piston 220 is used to form an air chamber 160 with the valve seat 310. The sealing seat 230 is located at the lower end of the connecting rod 210. The gas in the container can cause the sealing seat 230 to seal against the annular sealing rib 170 under air pressure, thereby blocking the air inlet 120. The air inlet 120 is blocked by the cooperation of the sealing seat 230 and the annular sealing rib 170. The structure is simple, easy to process, has good sealing performance, and can limit the position of the piston assembly 200.

[0084] Optionally, see [link to relevant documentation] 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 has a second annular groove, and the third annular seal 232 is installed within this groove. The pressure plate 233 is connected to the lower end of the connecting rod 210 and covers the seat body 231, partially covering the third annular seal 232. The portion of the third annular seal 232 not covered by the pressure plate 233 presses against the annular sealing rib 170. The cooperation between the third annular seal 232 and the annular sealing rib 170 effectively seals the air inlet 120, providing excellent sealing performance. Furthermore, the pressure plate 233, by pressing down on the third annular seal 232, improves the stability of its installation.

[0085] Optionally, the connecting rod 210 and the base 231, as well as the connecting rod 210 and the pressure plate 233, can be connected by a threaded connection.

[0086] Further, see also Figure 2 , Figure 4 and Figure 6 A partition 180 is provided inside the valve chamber 110, and a connecting rod 210 slides through the partition 180. A second elastic element 190 is provided between the partition 180 and the piston 220. The second elastic element 190 is configured to always have a tendency to push the piston 220 upward, so that the sealing seat 230 moves towards the annular sealing rib 170. That is, when the container valve is closed, the piston assembly 200 is pushed upward by both the second elastic element 190 and the air pressure at the air inlet 120, ultimately causing the sealing seat 230 to seal against the annular sealing rib 170. This further improves the sealing performance of the container valve. In addition, the partition 180 can both fix the second elastic element 190 and guide the movement of the connecting rod 210, which helps to improve the stability and smoothness of the piston assembly 200's movement within the valve chamber 110.

[0087] Optionally, in one 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, see [link to relevant documentation] Figure 2 The partition 180 has a central hole, through which the connecting rod 210 slides and seals. This configuration divides the valve chamber 110 into two independent chambers, with the outlet 130 located in the lower chamber. This ensures that when the valve is opened, the extinguishing agent entering the valve chamber 110 through the inlet 120 is blocked by the partition 180 below the piston 220, effectively preventing the extinguishing agent from affecting the piston 220 and thus ensuring the reliability of valve opening.

[0089] Further, see also Figure 6 Since the partition 180 is provided, a closed space is formed between the partition 180 and the piston 220. In order to ensure that the gas in the closed space can be reliably discharged when the piston 220 moves down, so as to avoid the gas from hindering the movement of the piston 220, a through hole 101 is provided on the valve body 100 to connect the space and the outside.

[0090] Optionally, see [link to relevant documentation] Figure 1 The valve body 100 is also provided with a safety vent 102 communicating with the valve chamber 110, and the safety vent 102 is horizontally inclined upwards. This arrangement can protect the operator when releasing gas. In one possible embodiment, the safety vent 102 is horizontally inclined upwards at 45°.

[0091] Optionally, see [link to relevant documentation] Figure 1 A plug 1021 is provided at the outlet of the safety vent 102.

[0092] Furthermore, the safety relief port 102 can be positioned on the back side of the operator's working face to further protect the operator.

[0093] Optionally, see [link to relevant documentation] 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 a protective cover 104 to protect the pressure gauge 103, the risk of damage to the pressure gauge 103 due to collision with foreign objects at a height or dropping can be reduced.

[0094] It is worth noting that the working principle of the safety relief port 102 and the pressure gauge 103 is existing technology, so it will not be described in detail here.

[0095] Optionally, see [link to relevant documentation] Figure 6 In one possible embodiment, a plug 105 is provided at the air outlet 130. When it is necessary to open the container valve for fire extinguishing, the plug 105 can be manually removed. The plug 105 can play a protective role and can solve the safety hazard caused by the sudden spraying of extinguishing agent when the container valve is accidentally opened.

[0096] This embodiment also provides a fire extinguishing device, including a container bottle and the aforementioned container valve. Because of the 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 extinguishing agent can only be discharged from the valve's outlet 130, effectively reducing the waste of extinguishing agent. When the valve is closed, the sealing effect is good, effectively reducing the risk of extinguishing agent leakage.

[0097] Specifically, the inlets of both the air inlet 120 and the gas passage 140 are located at the lower end of the valve body 100. 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, with the first external thread connecting to the first internal thread. A second internal thread is provided on the peripheral wall of the air inlet 120, and a siphon tube is provided inside the container bottle. One end of the siphon tube has a second external thread, which connects to the second internal thread, and the other end of the siphon tube extends to the bottom of the container bottle.

[0098] The container is filled with perfluorohexanone extinguishing agent. After filling, the lower part of the container contains the extinguishing agent, and the upper part contains high-pressure nitrogen. A siphon tube extends into the lower part of the container to draw in the extinguishing agent, while the high-pressure nitrogen enters the gas passage 140 to open the valve.

[0099] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should 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) is provided, wherein a valve cavity (110) is provided inside the valve body (100), and an air inlet (120) and an exhaust outlet (1511) are respectively provided at both 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 passage (140) is provided on the valve body (100). The air inlet (120) and the gas passage (140) are both connected to the container bottle and the valve cavity (110). The exhaust outlet (1511) and the air outlet (130) are used to connect the valve cavity (110) and the outside. A piston assembly (200) has its upper end slidingly engaged with the inner peripheral wall of the valve chamber (110), and its lower end is capable of blocking the air inlet (120) under the air pressure. The valve opening mechanism (300) includes a valve seat (310) and a valve stem (320). The valve seat (310) is sealed and installed in the valve cavity (110). The valve body (100) has one end with the exhaust port (1511), and the upper end of the valve seat (310) and the piston assembly (200) form a gas chamber (160). The valve seat (310) has a first mounting cavity (311). The inlet of the first mounting cavity (311) is connected to the outlet of the gas passage (140), and the outlet of the first mounting cavity (311) is connected to the gas chamber (160). The valve stem (320) is slidably disposed in the first mounting cavity (311). The high-pressure gas flowing into the first mounting cavity (311) from the gas passage (140) can cause the valve stem (320) to block the outlet of the first mounting cavity (311) through the gas pressure. The drive rod (400) is slidably disposed within the exhaust port (1511) and is disposed opposite to the valve rod (320); When the container valve is opened, the drive rod (400) drives the valve rod (320) to move down and close the exhaust port (1511) under the action of external force. The high-pressure gas in the gas passage (140) enters the gas chamber (160) through the first mounting cavity (311) to push the piston assembly (200) to open the air inlet (120). When the container valve is closed, the drive rod (400) moves away from the valve rod (320) and opens the exhaust port (1511). The high-pressure gas in the air 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, A mounting base (150) is sealed on the top of the valve chamber (110). The mounting base (150) is located above the valve seat (310) and forms a first air chamber (161) with the valve seat (310). The mounting base (150) is provided with an exhaust port (1511), which connects the first air chamber (161) to the outside. 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 air passage (312) and an outlet air passage (313). One end of the inlet air passage (312) is connected to the outlet of the gas passage (140), and the other end is connected to the inlet of the first mounting cavity (311). The outlet air passage (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, The valve seat (310) has a notch on its outer peripheral wall, and the notch and the inner peripheral wall of the valve cavity (110) form a manifold (314). The outlet of the gas passage (140) and one end of the inlet passage (312) are both connected to the manifold (314).

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

5. The container valve according to claim 1, characterized in that, The outlet diameter of the first mounting cavity (311) is smaller than the diameter of the first mounting cavity (311). The top of the valve stem (320) is slidably disposed in the outlet of the first mounting cavity (311). The valve stem (320) is sleeved with a first annular seal (330). The first annular seal (330) can press against the outer edge of the outlet of the first mounting cavity (311) to block the outlet of the first mounting cavity (311). And / or, the first mounting cavity (311) is provided with a first elastic element (340), the first elastic element (340) being configured to always have a tendency to drive the valve stem (320) to block the outlet of the first mounting cavity (311).

6. The container valve according to claim 2, characterized in that, The mounting base (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) near the valve stem (320) is the exhaust port (1511); 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 end of the second mounting cavity (151). The horizontal section (410) can abut against the top wall of the second mounting cavity (151). The horizontal section (410) is provided with a first channel (411) that runs through it in the horizontal direction. The first vertical section (420) is provided with a second channel (421) that extends in the vertical direction and connects the first channel (411) with the outside. The second vertical segment (430) connects the horizontal segment (410) and the third vertical segment (440), and the cross-sectional area of ​​the second vertical segment (430) is larger than the cross-sectional area of ​​the third vertical segment (440). The inlet end of the second mounting cavity (151) is provided with a second annular seal (152). When the drive rod (400) moves away from the valve stem (320), the third vertical section (440) and the second annular seal (152) are fitted with a gap (1611) to open the exhaust port (1511). The gas entering the second mounting cavity (151) from the exhaust port (1511) is discharged to the outside through the first channel (411) and the second channel (421). When the drive rod (400) descends to make the third vertical section (440) contact the valve stem (320) and press down the valve stem (320), the outer peripheral wall of the second vertical section (430) is attached to the second annular seal (152) to block the exhaust port (1511).

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

8. The container valve according to any one of claims 1-6, characterized in that, On the inner peripheral 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 disposed at the upper end of the connecting rod (210) and slides against the inner peripheral wall of the valve chamber (110). The sealing seat (230) is disposed at the lower end of the connecting rod (210). The gas in the container bottle can cause the sealing seat (230) to press 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). 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 covers 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 press against the annular sealing rib (170). And / or, a partition (180) is provided in the valve chamber (110), the connecting rod (210) slides through the partition (180), and a second elastic element (190) is provided between the partition (180) and the piston (220). The second elastic element (190) is configured to always have the tendency to push the piston (220) upward, so that the sealing seat (230) moves toward the annular sealing rib (170).

10. The container valve according to any one of claims 1-6, characterized in that, The valve body (100) is also provided with a safety relief port (102) communicating with the valve cavity (110), and the safety relief port (102) is horizontally inclined upward; 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. A fire extinguishing device, characterized in that, The container includes a container bottle and a container valve according to any one of claims 1-10, wherein the inlet of the air inlet (120) and the inlet of the gas passage (140) are both located at the lower end of the valve body (100), and 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), and a first internal thread is provided at the mouth of the container bottle, wherein 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 tube is provided inside the container bottle, one end of the siphon tube is provided with a second external thread, the second external thread is connected to the second internal thread, and the other end of the siphon tube extends to the bottom of the container bottle.

Images