Non-resettable valve

Abstract

The application relates to the technical field of valves and discloses a reset-preventing valve, which comprises a valve body, the inside of the valve body is a valve cavity, the valve body is provided with a first flow channel and a second flow channel, the first flow channel and the second flow channel are connected in communication through a third flow channel, a sealing part is arranged in the valve cavity and is located above the first flow channel, an electromagnet is fixedly connected with the valve body, a valve rod penetrates through the electromagnet, one end of the valve rod is provided with a metal sheet, the metal sheet is located at the upper end of the electromagnet, the other end of the valve rod is provided with a valve core, the valve core is located at the lower end of the electromagnet, and the valve core is coaxially arranged with the third flow channel; the bottom of the valve core is provided with a first elastic part, one end of the first elastic part is in abutment with the valve core, and the other end of the first elastic part is in abutment with the bottom of the valve cavity; one end of a pull rod is in abutment with the valve rod, the other end of the pull rod extends to the outside of the valve body, a reset assembly is slidably arranged on the pull rod, a clamp is slidably arranged on the reset assembly, one end of a second elastic part is in abutment with the clamp, and the other end of the second elastic part is in abutment with the reset assembly.

Description

Technical Field

[0001] This invention relates to the field of valve technology, and more specifically to an anti-reset valve. Background Technology

[0002] The current new energy industry, especially electrochemical energy storage such as containerized energy storage systems, requires the installation of fire suppression systems to spray extinguishing agents into the battery packs or containers. The flow direction of the extinguishing agent in these systems is typically controlled by valves and pipelines. Solenoid valves, puncture valves, and electric ball valves are commonly used centralized valves. However, the application of these valves in energy storage fire suppression systems has its own drawbacks, as described below: Solenoid valves have several drawbacks. First, they require continuous energization to remain open, and prolonged energization can cause the coil to overheat and shorten its lifespan. Second, continuous energization requires the wiring to withstand prolonged exposure to flames, which poses a significant risk of failure and is detrimental to firefighting effectiveness. Third, the open and closed state of a solenoid valve cannot be visually observed; it can only be determined by testing for magnetism or listening for sound. Accidental activation without warning can lead to extinguishing agent leakage, thus affecting the firefighting effect. Finally, solenoid valves typically lack a manual opening function and will fail in the event of a circuit malfunction.

[0003] The puncture valve, firstly, relies on puncturing an internal diaphragm to open the passage. It is typically for single use, requiring diaphragm replacement for reuse, which does not meet fire safety regulations' requirements for periodic functional testing of equipment. If the electrical actuator malfunctions, the diaphragm cannot be punctured, rendering firefighting ineffective. Secondly, the puncture valve's open position is not externally observable; accidental activation is difficult to detect, thus affecting firefighting effectiveness. Finally, the puncture valve lacks a manual opening function and will fail in the event of a circuit malfunction.

[0004] Electric ball valves have several drawbacks. First, they are typically quite large, limiting their application within energy storage containers. Second, they require continuous power and open slowly, taking approximately 3-5 seconds to fully open. If power is lost during this time, they will shut off, hindering firefighting efforts.

[0005] In conclusion, the industry urgently needs a valve that can address the aforementioned issues. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of the above-mentioned technologies by providing an anti-reset valve that can be opened in both electric and manual modes, and has an indicator when it is opened.

[0007] To achieve the above objectives, the anti-reset valve designed in this invention includes: a valve body, the interior of which is hollow and forms a valve cavity; the valve body has a first flow channel and a second flow channel; the first flow channel is connected to the valve cavity; the second flow channel is connected to the valve cavity; the first flow channel and the second flow channel are connected by a third flow channel; and a sealing part is disposed in the valve cavity, the sealing part being located above the first flow channel. It also includes: an electromagnet, which is fixedly connected to the valve body, a valve stem passing through the electromagnet, a metal plate at one end of the valve stem located at the upper end of the electromagnet, and a valve core at the other end of the valve stem located at the lower end of the electromagnet, with the valve core coaxially arranged with the third flow channel. The bottom of the valve core is provided with a first elastic part, one end of the first elastic part abuts against the valve core, and the other end of the first elastic part abuts against the bottom of the valve cavity; One end of the pull rod abuts against the valve stem, and the other end of the pull rod extends to the outside of the valve body. The reset assembly slides on the pull rod, and the clamp slides on the reset assembly. One end of the second elastic part abuts against the clamp, and the other end of the second elastic part abuts against the reset assembly.

[0008] In this design, the first and second flow channels are typically not on the same horizontal plane, but rather staggered vertically to prevent short-circuiting of the liquid. The third flow channel is a connecting channel, which can be blocked or opened by the valve core moving up and down. The up-and-down movement of the valve core is controlled by the valve stem. The metal plate at the upper end of the valve stem is pushed downward by an electromagnet or by manually pressing the lever, causing the valve core to open the third flow channel downward, thus opening the valve. To close the valve, the lever needs to be manually pulled upward, and the valve stem will return to the closed state under the action of the first elastic part. The second elastic part mainly acts as a rebound mechanism when the lever is pressed downward. This allows the invention to be reused. The sealing part isolates the liquid flow portion from the upper electrically charged portion.

[0009] Preferably, the valve further includes: an indicator portion disposed within the valve cavity around the circumference of the metal sheet, the indicator portion being fixedly connected to the valve cavity, the lower part of the indicator portion being constricted, the lower end diameter of the indicator portion being smaller than the diameter of the metal sheet, and the lower end of the indicator portion having a protrusion; the side surface of the valve body has an indicator hole, and the protrusion corresponds to the indicator hole. In this design, using a purely mechanical indicator portion can reduce the impact of power failure on the display function of the valve.

[0010] Preferably, the lower part of the reset assembly is enlarged, and the enlargement stops at the bottom of the reset assembly, becoming flat. The clamp is fixedly connected to the valve body, and the clamp has a tapered bottom. The middle part of the reset assembly is located at the clamp's opening. In this design, the main body of the clamp is dovetail-shaped, with the opening extending straight to both sides. The top of the reset assembly is a horizontal plate, and there are downward-hanging vertical plates on the left and right sides. The upper part of the vertical plates is straight, and the lower part is triangular. The bottom sides of the vertical plates extend straight to both sides. Matching the straight extension of the clamp, it serves as a limiting part during reset, preventing the entire reset assembly from entering the clamp.

[0011] Preferably, the valve stem has a reducing section at the top, which is wider at the top and narrower at the bottom. The reducing section is preferably an inverted frustum shape, which facilitates its downward movement from the clamp. It is worth noting that the specific clamping force of the clamp needs to be determined by the user based on their actual usage conditions; this application will not elaborate further. The reducing section is coaxial with the pull rod, making manual operation of the valve opening and closing easier. The reducing section is located above the metal plate, and its maximum diameter is no greater than the maximum width of the bottom of the reset assembly. The maximum width of the bottom of the reset assembly is the maximum extent to which the clamp can open during the valve's return to the closed state; therefore, the maximum diameter of the reducing section must be smaller than the maximum width of the bottom of the reset assembly. The valve core is narrower at the top and wider at the bottom, matching the third flow channel. This design improves the valve core's sealing performance.

[0012] Preferably, the valve also includes a limiting plate, which is disposed in the lower part of the valve cavity and fixedly connected to the valve body. The limiting plate has a through hole, and the bottom of the valve stem passes through the limiting plate. The first elastic part is disposed between the valve core and the limiting plate. In this design, the limiting plate can provide a range for raising the first elastic part. Because in actual use, in order to ensure the stability of the first elastic part, the lower end of the valve stem passes through the middle of the first elastic part, which can prevent the first elastic part from lateral displacement and failure. However, the valve stem passing through the first elastic part will affect the compression of the first elastic part. Therefore, the limiting plate is needed to create a distance between the first elastic part and the bottom of the valve cavity. The valve stem passing through the through hole on the limiting plate can ensure that the first elastic part has sufficient compression distance.

[0013] Preferably, the valve body has a first protrusion in the middle, and the electromagnet is disposed in the valve body at a position corresponding to the first protrusion. In this design, the first protrusion typically has a built-in wound coil, which is used to generate an attractive force on the electromagnet after power is supplied.

[0014] Preferably, the valve body also has a power outlet, which is located on a circular protrusion on the valve body.

[0015] Preferably, the pull rod has a second protrusion in the middle, which is located below the reset assembly and abuts against the reset assembly. The upper end face of the second elastic part abuts against the lower end face of the second protrusion. In this design, the upper end face of the second protrusion provides an upward force to the reset assembly when the valve returns to the closed state, helping the reset assembly to open the clamp.

[0016] Preferably, a pull ring is provided at the top of the lever. In this design, the pull ring provides convenience when manually opening the valve.

[0017] Preferably, the power outlet is an aviation plug. In this design, the aviation plug can improve the waterproof and dustproof rating of the power outlet to some extent.

[0018] Compared with the prior art, the present invention has the following advantages: 1. The anti-reset valve described in this application does not require continuous power supply after startup. It only needs to be powered for 1 to 3 seconds at the initial startup to achieve opening and locking. At the same time, it does not require continuous power supply during subsequent fire extinguishing. This reduces the power consumption of the system and improves the safety and stability of the system, avoiding the risk of the circuit being burned out by a fire.

[0019] 2. The anti-reset function design can prevent valves from closing due to accidents during fire extinguishing, thus improving the safety and reliability of the fire protection system. Manual reset is only allowed after relevant personnel have confirmed that it is safe.

[0020] 3. The manual opening function avoids the problem of valves failing to open due to power supply line failure under certain conditions.

[0021] 4. Valve status indication function: The valve described in this application has a status indication device, which facilitates relevant personnel to quickly read information so as to perform subsequent correct operations and can effectively prevent relevant personnel from misjudging the valve status and causing unexpected situations.

[0022] 5. Reusable function, meeting the requirements of fire protection codes for periodic equipment testing, to ensure that the valve body is in good working condition during fire extinguishing. Attached Figure Description

[0023] Figure 1 This is an isometric view of the anti-reset valve of the present invention; Figure 2 This is an assembly diagram of the internal parts of the anti-reset valve of the present invention; Figure 3 This is a front view of the anti-reset valve of the present invention; Figure 4 This is a cross-sectional view (AA) of the anti-reset valve of the present invention; Figure 5 This is a right view of the anti-reset valve of the present invention; Figure 6 This is a BB cross-sectional view of the anti-reset valve of the present invention; Figure 7 This is a schematic diagram of the closed state of the anti-reset valve of the present invention; Figure 8 This is a schematic diagram of the anti-reset valve in the open state of the present invention.

[0024] The components in the diagram are labeled as follows: 1. Pull rod, 2. Clamp, 3. Metal plate, 4. Electromagnet, 5. Sealing part, 6. Valve core, 7. Second elastic part, 8. Reset assembly, 9. Valve stem, 10. First elastic part, 11. Limiting plate, 12. Indicator, 13. Power outlet, 14. Pull ring. Detailed Implementation

[0025] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings and embodiments. 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 invention.

[0026] like Figure 1-6 As shown, the anti-reset valve includes: a valve body, the interior of which is hollow and forms a valve cavity; the valve body has a first flow channel and a second flow channel; the first flow channel is connected to the valve cavity; the second flow channel is connected to the valve cavity; the first flow channel and the second flow channel are connected by a third flow channel; and a sealing part 5 is disposed in the valve cavity, with the sealing part 5 located above the first flow channel. It also includes: an electromagnet 4, which is fixedly connected to the valve body, a valve stem 9 passing through the electromagnet 4, a metal plate 3 at one end of the valve stem 9, which is located at the upper end of the electromagnet 4, and a valve core 6 at the other end of the valve stem 9, which is located at the lower end of the electromagnet 4 and is coaxially arranged with the third flow channel. The bottom of the valve core 6 is provided with a first elastic part 10. One end of the first elastic part 10 abuts against the valve core 6, and the other end of the first elastic part 10 abuts against the bottom of the valve cavity. One end of the pull rod 1 abuts against the valve stem 9, and the other end of the pull rod 1 extends to the outside of the valve body. The reset assembly 8 is slidably mounted on the pull rod 1, and the clamp 2 is slidably mounted on the reset assembly 8. One end of the second elastic part 7 abuts against the clamp 2, and the other end of the second elastic part 7 abuts against the reset assembly 8.

[0027] In this embodiment, the first and second flow channels are typically not on the same horizontal plane, but are staggered vertically to prevent short-circuiting of the liquid. The third flow channel is a connecting flow channel, and the valve core 6 can block or open the third flow channel by moving up and down. The up and down movement of the valve core 6 is controlled by the valve stem 9. The metal plate 3 at the upper end of the valve stem 9 is pushed downward by the electromagnet 4 or by manually pressing the pull rod 1, causing the valve core 6 to open the third flow channel downward, thus opening the valve. When closing, the pull rod 1 needs to be manually pulled upward, and the valve stem 9 will return to the closed state under the action of the first elastic part 10. The second elastic part 7 mainly plays a rebound role when the pull rod 1 is pressed downward. This allows the invention to be reused. The sealing part 5 can isolate the liquid flow part from the upper charged part.

[0028] In one specific embodiment, the valve further includes an indicator 12, which is disposed within the valve cavity circumferentially to the metal sheet 3. The indicator 12 is fixedly connected to the valve cavity, and its lower part is tapered, with a diameter smaller than that of the metal sheet 3. The lower end of the indicator 12 has a protrusion. An indicator hole is located on the side of the valve body, and the protrusion corresponds to the indicator hole. In this embodiment, using a purely mechanical indicator 12 can reduce the impact of power failure on the valve's display function.

[0029] In one specific embodiment, the lower part of the reset component 8 is enlarged, and the enlargement stops at the bottom of the reset component 8, becoming flat. The clamp 2 is fixedly connected to the valve body, and the clamp 2 has a tapered bottom. The middle part of the reset component 8 is located at the clamping opening of the clamp 2. In this embodiment, the main body of the clamp 2 is dovetail-shaped, with the clamping opening extending straight to both sides. The top of the reset component 8 is a horizontal plate, and there are vertical plates hanging downwards on the left and right sides. The upper part of the vertical plates is straight, and the lower part is triangular. The two sides of the bottom of the vertical plates extend straight to both sides. Matching the straight extension of the clamp 2, it serves as a limiting part during reset, preventing the entire reset component 8 from entering the interior of the clamp 2.

[0030] In one specific embodiment, the top of the valve stem 9 has a variable diameter section, which is wider at the top and narrower at the bottom. Preferably, the variable diameter section is an inverted frustum shape. This shape facilitates the downward movement of the variable diameter section from the clamp 2. It is worth noting that the specific clamping force of the clamp 2 needs to be determined by the user based on their actual usage conditions, which will not be elaborated upon in this application. The variable diameter section is coaxially arranged with the pull rod 1, which makes it easier to manually operate the valve opening and closing. Furthermore, the variable diameter section is located above the metal plate 3, and its maximum diameter is not greater than the maximum width of the bottom of the reset assembly 8. The maximum width of the bottom of the reset assembly 8 is the maximum extent to which the clamp 2 can open during the valve's return to the closed state; therefore, the maximum diameter of the variable diameter section must be smaller than the maximum width of the bottom of the reset assembly 8. The valve core 6 is narrower at the top and wider at the bottom, and it matches the third flow channel. This design improves the sealing performance of the valve core 6.

[0031] In one specific embodiment, a limiting plate 11 is also included. The limiting plate 11 is disposed in the lower part of the valve cavity and is fixedly connected to the valve body. The limiting plate 11 has a through hole, and the bottom of the valve stem 9 passes through the limiting plate 11. The first elastic part 10 is disposed between the valve core 6 and the limiting plate 11. In this embodiment, the limiting plate 11 can provide a range for raising the first elastic part 10. In actual use, in order to ensure the stability of the first elastic part 10, the lower end of the valve stem 9 passes through the middle of the first elastic part 10, which can prevent the first elastic part 10 from lateral displacement and failure. However, the valve stem 9 passing through the first elastic part 10 will affect the compression of the first elastic part 10. Therefore, the limiting plate 11 is needed to create a distance between the first elastic part 10 and the bottom of the valve cavity. The valve stem 9 passing through the through hole on the limiting plate 11 can ensure that the first elastic part 10 has sufficient compression distance.

[0032] In one specific embodiment, the valve body has a first protrusion in the middle, and the electromagnet 4 is disposed in the valve body at a position corresponding to the first protrusion. In this embodiment, the first protrusion typically has a built-in wound coil, which is used to generate an attractive force on the electromagnet 4 after being powered.

[0033] In one specific embodiment, the valve body also has a power outlet 13, which is disposed on a circular protrusion on the valve body.

[0034] In one specific embodiment, the pull rod 1 has a second protrusion in the middle, which is located below the reset assembly 8 and abuts against the reset assembly 8. The upper end face of the second elastic part 7 abuts against the lower end face of the second protrusion. In this embodiment, the upper end face of the second protrusion provides an upward force to the reset assembly 8 when the valve returns to the closed state, helping the reset assembly 8 to open the clamp 2.

[0035] In one specific embodiment, a pull ring 14 is provided at the top of the lever 1. In this embodiment, the pull ring 14 provides convenience when manually opening the valve.

[0036] In one specific embodiment, the power outlet 13 is an aviation plug. In this embodiment, the aviation plug can improve the waterproof and dustproof rating of the power outlet 13 to some extent.

[0037] Example 1 like Figure 7 As shown, under normal conditions, the valve core 6 is attached to the end of the third flow channel by the elastic force of the first elastic part 10. Here, the lower flow channel is defined as the first flow channel, which is the water inlet, and the upper flow channel is defined as the second flow channel, which is the water outlet. In this way, even if water enters through the water inlet, the valve core 6 will be further blocked in the third flow channel by its own water pressure.

[0038] Example 2 like Figure 8 As shown, when action is required, the electromagnet 4 is energized, attracting the metal plate 3 to its upper surface. The metal plate then drives the valve stem 9 downwards, causing the variable-diameter section at the top of the valve stem 9 to disengage from the clamp 2. After disengagement, the clamp 2 immediately returns to its inward clamping state under its own elasticity, and can press down on the variable-diameter section, thus preventing the valve stem 9 from returning to its original position. At this time, even if the electromagnet 4 is de-energized and loses its attraction to the metal plate 3, the valve stem 9 will not spring back.

[0039] Simultaneously, the valve stem 9 drives the valve core 6 to move downwards. At this time, the third flow channel is opened, and the first and second flow channels are connected through the third flow channel. The fluid from the inlet can then flow out of the outlet in sequence through the first, third, and second flow channels. Meanwhile, because the sealing part 5 is tightly connected to the valve stem 9 and to the inner surface of the valve cavity, fluid is prevented from entering the upper part of the valve cavity.

[0040] Furthermore, during operation, the metal plate 3 is attracted downwards to the upper surface of the electromagnet 4, which presses against the indicator part 12, causing it to protrude outside the valve cavity. Preferably, the protrusion on the indicator part 12 can be painted with a bright color for easy observation by the user; in this application, red is preferred. When relevant personnel observe the red protrusion from the outside, they can determine that the valve has been activated.

[0041] Example 3 When the valve needs to be reset, pulling the pull ring 14 causes the pull rod 1 to lift the reset assembly 8 upwards. At this time, the reset assembly 8 will open the clamp 2 to a certain extent, and the valve stem 9 will be pushed into the clamp 2 by the elastic force of the first elastic part 10. After reset, the indicator 12 is no longer pressed by the metal plate 3, and the red protrusion will retract into the valve cavity. The red protrusion will not be visible to the relevant personnel from the outside, indicating that the valve is in the closed state.

[0042] Example 4 When the circuit fails and manual opening is required, the relevant personnel can directly press down on the lever 1. The bottom of the lever 1 presses down on the valve stem 9, which can achieve the same action process as in Example 2.

[0043] It should be noted that the above description of the technical solutions is exemplary, and this specification may be embodied in different forms and should not be construed as limiting it to the technical solutions set forth herein. Rather, providing these descriptions will ensure that the disclosure of this invention is thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Furthermore, the technical solutions of this invention are defined only by the scope of the claims.

[0044] The aspects disclosed in this specification and claims are merely examples, and therefore, this specification and claims are not limited to the details shown. In the foregoing description, detailed descriptions of relevant known functions or configurations have been omitted where it would unnecessarily obscure the focus of this specification and claims.

[0045] Finally, it should be noted that the above description is a further detailed explanation of the invention in conjunction with specific embodiments. It should not be considered that the specific implementation of the invention is limited to these descriptions. For those skilled in the art, any simple substitutions made without departing from the concept of the invention should be considered within the scope of protection of this invention. The above embodiments are merely representative examples of the invention. Obviously, the invention is not limited to the above embodiments and many variations are possible. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the invention should be considered within the scope of protection of this invention.

Claims

1. A reset prevention valve, characterized in that, include: The valve body has a hollow interior forming a valve cavity. The valve body has a first flow channel and a second flow channel. The first flow channel is connected to the valve cavity, and the second flow channel is connected to the valve cavity. The first flow channel and the second flow channel are connected through a third flow channel. A sealing part (5) is disposed in the valve cavity and is located above the first flow channel. It also includes: an electromagnet (4), which is fixedly connected to the valve body, a valve stem (9) passing through the electromagnet (4), a metal plate (3) at one end of the valve stem (9), the metal plate (3) being located at the upper end of the electromagnet (4), and a valve core (6) at the other end of the valve stem (9), the valve core (6) being located at the lower end of the electromagnet (4), and the valve core (6) being coaxially arranged with the third flow channel; The bottom of the valve core (6) is provided with a first elastic part (10), one end of the first elastic part (10) abuts against the valve core (6), and the other end of the first elastic part (10) abuts against the bottom of the valve cavity. One end of the pull rod (1) abuts against the valve stem (9), and the other end of the pull rod (1) extends to the outside of the valve body. The reset assembly (8) slides on the pull rod (1), and the clamp (2) slides on the reset assembly (8). One end of the second elastic part (7) abuts against the clamp (2), and the other end of the second elastic part (7) abuts against the reset assembly (8). The lower part of the reset assembly (8) is enlarged, and a flat structure is formed at the bottom of the reset assembly (8); The clamp (2) is fixedly connected to the valve body. The clamp (2) has a bottom opening. The middle part of the reset component (8) is located at the clamp opening of the clamp (2). The valve stem (9) has a variable diameter section at the top, which is wider at the top and narrower at the bottom. The variable diameter section is coaxially arranged with the pull rod (1) and is located above the metal plate (3). The maximum diameter of the variable diameter section is not greater than the maximum width of the bottom of the reset assembly (8). The valve core (6) is narrow at the top and wide at the bottom, and the valve core (6) is matched with the third flow channel; It also includes a limiting piece (11), which is disposed in the lower part of the valve cavity. The limiting piece (11) is fixedly connected to the valve body. The limiting piece (11) has a through hole. The bottom of the valve stem (9) passes through the limiting piece (11). The first elastic part (10) is disposed between the valve core (6) and the limiting piece (11).

2. The anti-reset valve according to claim 1, characterized in that, Also includes: Indicator (12), the indicator (12) is disposed in the valve cavity and located in the circumference of the metal sheet (3). The indicator (12) is fixedly connected to the valve cavity. The lower part of the indicator (12) is constricted. The diameter of the lower end of the indicator (12) is smaller than the diameter of the metal sheet (3). The lower end of the indicator (12) has a protrusion. The valve body has an indicator hole on its side surface, and the protrusion corresponds to the indicator hole.

3. The anti-reset valve according to claim 1, characterized in that, The valve body has a first protrusion in the middle, and the electromagnet (4) is disposed in the valve body at a position corresponding to the first protrusion.

4. The anti-reset valve according to claim 3, characterized in that, The valve body also has a power outlet (13).

5. The anti-reset valve according to claim 1, characterized in that, The pull rod (1) has a second protrusion in the middle, which is located below the reset assembly (8). The second protrusion abuts against the reset assembly (8), and the upper end face of the second elastic part (7) abuts against the lower end face of the second protrusion.

6. The anti-reset valve according to claim 5, characterized in that, The top of the pull rod (1) is provided with a pull ring (14).

7. The anti-reset valve according to claim 4, characterized in that, The power outlet (13) is an aviation plug.

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