A gas switch valve

Abstract

A gas switch valve comprises a main valve body and a valve core assembly, wherein a gas passage is arranged in the main valve body, and the gas passage has a valve port, and the valve core assembly can be driven to close or open the valve port to shut off or conduct the gas passage; the valve also comprises a first elastic component and a locking component, wherein the first elastic component acts on the valve core assembly, and the valve core assembly is also provided with a hole-type or groove-type locking fitting portion, and when the valve port is in an open state, the first elastic component is in an energy storage state, and the locking component is plugged into the locking fitting portion to limit the axial displacement of the valve core assembly; the valve also comprises a thermal component, which is transmission-connected with the locking component, and the thermal component can drive the locking component to disengage from the locking fitting portion under set temperature conditions, and the first elastic component can drive the valve core assembly to close the valve port. This driving method does not require an external power supply or a control signal, and has stronger anti-interference performance and higher safety.

Description

Technical Field

[0001] The present invention relates to the technical field of gas valves, and in particular to a gas switching valve. Background Art

[0002] The existing gas switch valves installed in the gas pipeline generally require external power supply and control signals for control. In this way, in the event of a fire hazard, once the external power supply and control signal fail, the gas switch valve cannot be shut off in time, which may easily cause a greater disaster.

[0003] Therefore, how to provide a solution to overcome or alleviate the above-mentioned defects is still a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0004] The purpose of the present invention is to provide a gas switching valve, which is provided with a thermal component. When the set temperature condition is reached, the thermal component can move automatically to drive the locking component to unlock, thereby closing the valve. The valve closing does not require an external power supply or control signal, has stronger anti-interference ability and higher safety.

[0005] In order to solve the above technical problems, the present invention provides a gas switch valve, including a main valve body and a valve core assembly, wherein a gas channel is provided in the main valve body, and the gas channel has a valve port, and the valve core assembly is driven to close or open the valve port to shut off or conduct the gas channel; further comprising a first elastic component and a locking component, wherein the first elastic component acts on the valve core assembly, and the valve core assembly is further provided with a hole-type or groove-type locking fitting portion, and when the valve port is in an open state, the first elastic component is in an energy storage state, and the locking component is plugged into the locking fitting portion to limit the axial displacement of the valve core assembly; further comprising a thermal component, wherein the thermal component is transmission-connected to the locking component, and the thermal component can drive the locking component to disengage from the locking fitting portion under set temperature conditions, and the first elastic component can drive the valve core assembly to close the valve port.

[0006] With the above structure, when the ambient temperature reaches the above-mentioned set temperature condition, that is, when there is a fire hazard, the thermal component can move automatically to drive the locking component to disengage from the locking mating part, thereby releasing the lock on the valve core assembly. Under the action of the first elastic component, the valve core assembly can close the valve port automatically to achieve the shutoff of the gas channel. This driving method does not require the aid of external power supply, control signal, etc. Even if the external power supply and control signal fail, it can ensure the timely shutdown of the gas switch valve, thereby cutting off the gas transmission, which can largely avoid the expansion of the disaster and improve safety.

[0007] Optionally, it also includes a side valve body, which is located on a radial side of the main valve body and connected to the main valve body, a valve sleeve is provided in the side valve body, the valve core assembly is slidably connected to the valve sleeve, and the locking component is installed on the valve sleeve.

[0008] Optionally, the valve core assembly includes a valve core portion and a valve stem portion connected to each other, the valve core portion cooperates with the valve port to achieve closing or opening of the valve port, the valve stem portion is slidably connected to the valve sleeve, and the locking mating portion is arranged on the valve stem portion.

[0009] Optionally, the first elastic component is a spring sleeved on the valve stem, one end of the spring acts on the valve stem, and the other end of the spring acts on the valve sleeve.

[0010] Optionally, one end of the valve stem portion away from the valve core portion extends from the side valve body to form a manual operating portion.

[0011] Optionally, a valve cover is further included, which is installed on the side valve body and is used to cover the manual operation part; and / or the manual operation part is connected to a handle.

[0012] Optionally, the locking fitting portion is an annular groove provided on the outer peripheral wall of the valve stem portion.

[0013] Optionally, it also includes a lock seat, which is installed on the valve sleeve, and the locking component is installed on the lock seat; it also includes a second elastic component, which acts on the locking component, and when the valve port is in a closed state, the second elastic component is in an energy storage state, and when the locking component is opposite to the locking fitting part, the second elastic component can enable the locking component to be inserted into the locking fitting part.

[0014] Optionally, a transmission mechanism is further included, and the thermally-active component interacts with the locking component through the transmission mechanism.

[0015] Optionally, the transmission mechanism comprises a first swing arm which is hingedly arranged, wherein the first swing arm has a first end and a second end which are opposite to each other, wherein the first end acts on the locking component, and the second end acts on the thermally movable component.

[0016] Optionally, the transmission mechanism further comprises a mounting frame, the mounting frame is provided with a driving rod movable in the axial direction, the driving rod is hinged to the second end of the first swing arm, and the thermal component acts on the driving rod.

[0017] Optionally, the thermal component is a memory alloy piece, and the memory alloy piece acts on the driving rod. Under the set temperature condition, the memory alloy piece can be deformed to drive the driving rod to perform axial displacement.

[0018] Optionally, the memory alloy component is a memory spring, which is sleeved on the driving rod, and one end of the memory spring acts on the mounting frame, and the other end acts on the driving rod.

[0019] Optionally, an electromagnetic component is further included, and the electromagnetic component also acts on the driving rod, and the electromagnetic component can also drive the driving rod to perform axial displacement.

[0020] Optionally, it also includes a temperature sensor and a control module, the control module is signal-connected with the temperature sensor and the electromagnetic component, the temperature sensor is used to detect the ambient temperature, and the control module is used to control the opening and closing of the electromagnetic component according to the ambient temperature measured by the temperature sensor.

[0021] Optionally, it also includes a seismic sensor and a control module, the control module is signal-connected to the seismic sensor and the electromagnetic component, the seismic sensor is used to detect the magnitude of an earthquake, and the control module is used to control the opening and closing of the electromagnetic component according to the magnitude measured by the seismic sensor.

[0022] Optionally, a battery module is also provided in the side valve body for supplying power to the electromagnetic component.

[0023] Optionally, the transmission mechanism also includes a second swing arm hingedly arranged; and also includes an elastic pressing component that at least partially extends out of the side valve body, the second swing arm having a first end and a second end opposite to each other, the first end acting on the locking component, and the second end acting on the elastic pressing component, and the elastic pressing component can drive the second swing arm to rotate so that the locking component disengages from the locking fitting portion.

[0024] Optionally, the elastic pressing component includes a pressing cap and a third elastic component, the pressing cap is sleeved on the valve stem, and the third elastic component acts on the pressing cap.

[0025] Optionally, it further comprises a driving component, wherein the driving component is provided with a locking rod capable of axial movement, and the driving component can drive the locking rod to interact with the valve core assembly to limit the axial displacement of the valve core assembly when the valve port is in a closed state.

[0026] Optionally, the driving component is an electromagnetic driving component, and the electromagnetic driving component is powered by an external power supply, or the electromagnetic driving component is powered by a battery module arranged in the gas switching valve.

[0027] Optionally, the side valve body includes a valve seat and a valve cover, the valve seat is connected to the main valve body, the valve cover is provided with a mounting disc portion at one end of the valve cover close to the main valve body, the valve cover is connected to the valve seat via the mounting disc portion, and the valve cover is arranged on the outside of the valve cover.

[0028] Optionally, it further comprises an auxiliary valve body, wherein the auxiliary valve body is butted against the main valve body along the axial direction, and a fire-blocking component is arranged between the two.

[0029] Optionally, the fire-blocking component is a fire-blocking net; and / or, the internal channel of the auxiliary valve body is configured to be gradually contracted in a direction away from the fire-blocking component.

[0030] Optionally, it further includes a valve state sensor and a display device, wherein the valve state sensor is used to detect the state of the valve port, and the display device is connected to the valve state sensor signal and can display the state of the valve port measured by the valve state sensor.

[0031] Optionally, an operating switch is further provided on the outer side of the main valve body, and the operating switch can control the valve core assembly to close the valve port.

[0032] Optionally, the operation switch is integrated with the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic structural diagram of a specific implementation of the gas switch valve provided by the present invention;

[0034] Figure 2 for Figure 1 Schematic diagram of the structure after removing the valve cover and valve cover;

[0035] Figure 3 It is a connection structure diagram of the thermally-actuated component, the elastic pressing component, the valve sleeve, the locking component and the transmission mechanism;

[0036] Figure 4 It is an exploded view of the side valve body and valve cover;

[0037] Figure 5 It is a cross-sectional view of the internal components of the side valve body;

[0038] Figure 6 Cross-sectional view of the main valve body and auxiliary valve body.

[0039] Figure 1-6 The reference numerals in the figures are described as follows:

[0040] 1 main valve body, 11 gas channel, 12 valve port;

[0041] 2 side valve body, 2a valve seat, 2b valve cover, 2b-1 cover part, 2b-11 outlet hole, 2b-2 cover part, 21 valve core assembly, 211 valve core part, 212 valve stem part, 212a manual operation part, 212a-1 handle, 212b first elastic component, 212c locking matching part, 22 locking component, 221 second elastic component, 23 thermal component, 24 valve sleeve, 241 mounting plate part, 25 lock seat, 26 transmission mechanism, 261 first swing arm, 262 mounting frame, 262a driving rod, 263 second swing arm, 27 control module, 28 battery module, 29 elastic pressing component, 291 pressure cap, 292 third elastic component, 210 driving component, 210a locking rod;

[0042] 3. Valve cover;

[0043] 4. Temperature sensor;

[0044] 5. Auxiliary valve bodies, 51. Fire-blocking components. DETAILED DESCRIPTION

[0045] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0046] The words "first", "second", etc. mentioned in this article are only used to facilitate the description of two or more structures or components with the same or similar structures and / or functions, and do not imply any special limitation on the order and / or importance.

[0047] Please refer to Figure 1-6 , Figure 1 This is a structural schematic diagram of a specific implementation of the gas switch valve provided by the present invention. Figure 2 for Figure 1 Schematic diagram of the structure after removing the valve cover and valve cover, Figure 3 This is a connection diagram of the thermal component, elastic pressing component, valve sleeve, locking component and transmission mechanism. Figure 4 This is an exploded view of the side valve body and valve cover. Figure 5 It is a cross-sectional view of the internal components of the side valve body. Figure 6 Cross-sectional view of the main valve body and auxiliary valve body.

[0048] like Figure 1-6 As shown, the present invention provides a gas switching valve, including a main valve body 1 and a valve core assembly 21. A gas channel 11 is provided in the main valve body 1. The gas channel 11 can specifically be a bidirectional internal channel with a gas inlet and a gas outlet. The gas channel 11 also has a valve port 12 between the gas inlet and the gas outlet. The valve core assembly 21 can be driven to close or open the valve port 12 to shut off or conduct the gas channel 11.

[0049] Different from the background technology, the gas switch valve provided by the present invention also includes a first elastic component 212b, a locking component 22 and a thermal component 23. The first elastic component 212b acts on the valve core assembly 21. The valve core assembly 21 is also provided with a hole-type or groove-type locking fitting portion 212c. When the valve core assembly 21 moves to make the valve port 12 in an open state, the first elastic component 212b is in an energy storage state, and the locking component 22 is inserted into the locking fitting portion 212c to limit the axial displacement of the valve core assembly 21, thereby maintaining the valve open state; the thermal component 23 is transmission-connected with the locking component 22. The thermal component 23 can drive the locking component 22 to disengage from the locking fitting portion 212c under set temperature conditions. At this time, the energy accumulated in the first elastic component 212b can be released, and the valve core assembly 21 can be driven to close the valve port 12 to complete automatic valve closing.

[0050] The above-mentioned set temperature condition may be a determination condition for a fire hazard. Here, the embodiment of the present invention does not limit the specific value of the set temperature condition. In actual application, those skilled in the art may set it according to specific circumstances. For example, the above-mentioned set temperature condition may be a condition of ≥70°C. The fire hazard here may refer to an external fire, such as a fire in a building where a gas pipeline is installed, or a fire inside a gas pipeline (i.e., pipeline flashback).

[0051] With the above structure, when the ambient temperature reaches the above-mentioned set temperature condition, that is, when there is a fire hazard, the thermal component 23 can move automatically to drive the locking component 22 to disengage from the locking mating portion 212c, thereby releasing the lock on the valve core assembly 21. Under the action of the first elastic component 212b, the valve core assembly 21 can automatically close the valve port 12 to achieve the shutoff of the gas channel 11. This driving method does not require the aid of an external power supply, control signal, etc. Even if the external power supply or control signal fails, it can ensure the timely shutoff of the gas switch valve, thereby cutting off the gas delivery, which can largely avoid the expansion of the disaster and improve safety.

[0052] In a specific solution, a side valve body 2 may be further included. The side valve body 2 may be located on a radial side of the main valve body 1 and connected to the main valve body 1. The radial direction here refers to a direction perpendicular to the axial direction of the gas channel 11 in the main valve body 1. Figure 6 At this time, the valve port 12 can be located on the outer peripheral wall of the main valve body 1; a valve sleeve 24 can be provided in the side valve body 2, the valve core assembly 21 can be slidably connected to the valve sleeve 24, and the locking component 22 can be installed on the valve sleeve 24.

[0053] The valve core assembly 21 can be an integrated structure or a split structure, which can be determined in combination with actual conditions. In the embodiment of the accompanying drawings, the valve core assembly 21 can include a split valve core portion 211 and a valve stem portion 212. The valve core portion 211 can cooperate with the valve port 12 to achieve the closing or opening of the valve port 12. The valve core portion 211 ( Figure 5 , Figure 6 The specific structure of the valve sleeve 24 and the combination of various parts in the valve seat 2a without section lines), the connection structure of the valve core portion 211 and the valve stem portion 212, etc. are not limited here, as long as the technical effects such as the valve core portion 211 can close the valve port 12 and the valve stem portion 212 can drive the valve core portion 211 to move can be achieved; since the valve core portion 211 that cooperates with the valve port 12 has a relatively large size in the radial direction perpendicular to the axial direction of the valve sleeve 24, the sliding cooperation between the aforementioned valve core assembly 21 and the valve sleeve 24 can actually be a sliding cooperation between the valve stem portion 212 and the valve sleeve 24, and the aforementioned locking cooperation portion 212c can be arranged on the valve stem portion 212, and can also be arranged on the valve core portion 211, which is specifically related to the installation position of the locking component 22, etc.

[0054] Taking the locking fitting portion 212c set on the valve stem portion 212 as an example, the locking fitting portion 212c can be a unidirectional hole or groove. With such a setting, when installing the valve stem portion 212, the installation direction of the valve stem portion 212 must be considered, and the locking fitting portion 212c of the valve stem portion 212 and the locking component 22 must be in the same position in the circumferential direction, thereby ensuring that the locking component 22 can be inserted into the locking fitting portion 212c when the valve stem portion 212 slides axially relative to the valve sleeve 24, so as to complete the locking of the valve core assembly 21; alternatively, the locking fitting portion 212c can also be an annular groove extending along the circumferential direction. With such a setting, the valve stem portion 212 does not need to consider the installation direction during installation, and the installation is more convenient.

[0055] The first elastic component 212b can be a spring, a tension rope, an elastic ball or other elastic elements, as long as the aforementioned technical effects can be achieved. In the embodiment of the accompanying drawings, the first elastic component 212b can be a spring, and is mounted on the valve stem 212 in a sleeve, one end of the spring can interact with the valve stem 212, and the other end can interact with the valve sleeve 24, and a boss, a shoulder or other structure can be provided at the specific action point to provide a support position and / or a connection position for the spring.

[0056] In the process of the valve core assembly 21 opening the valve port 12, the first elastic component 212b can gradually store energy to prepare for the subsequent automatic closing of the valve core assembly 21. This energy storage can be compression energy storage or tension energy storage, which is related to the installation position, type, etc. of the first elastic component 212b, and is not limited here. It should be noted that when the first elastic component 212b adopts the scheme of tension energy storage, the two ends of the first elastic component 212b need to be fixedly connected with the valve stem portion 212 and the valve sleeve 24 that act on each other, so that the first elastic component 212b can generate a tensile force. The specific fixing method can be welding, clamping, bonding, etc., which is not limited here. Specifically to the embodiment of the accompanying drawings, the energy storage process of the first elastic component 212b is a compression process. At this time, its two ends do not need to be fixed, and the structure can be relatively simple.

[0057] When the valve core assembly 21 is in the position of closing the valve port 12, the first elastic component 212b can be in a free state or in an energy storage state, but it should be noted that even if the first elastic component 212b is in the energy storage state at this time, the energy accumulated is less than the energy accumulated by the first elastic component 212b when the valve core assembly 21 is in the position of opening the valve port 12, that is, the process of the valve core assembly 21 gradually opening the valve port 12 is actually the process of gradually increasing the energy accumulated by the first elastic component 212b.

[0058] A lock seat 25 may be provided on the outer side of the valve sleeve 24, and the aforementioned locking component 22 may be installed on the lock seat 25 and may be axially displaced relative to the lock seat 25. Figure 5 As shown, the second elastic component 221 may also be included. The second elastic component 221 may interact with the locking component 22. When the valve port 12 is in the closed state, the locking component 22 may be in the retracted state (eg, Figure 5 As shown), the second elastic component 221 can be in an energy storage state, so that when the locking component 22 is opposite to the locking fitting portion 212c, the energy stored in the second elastic component 221 can be released to drive the locking component 22 to be inserted into the locking fitting portion 212c.

[0059] Similar to the aforementioned first elastic component 212b, the second elastic component 221 can also be an elastic element of various styles such as a spring, a tension rope, an elastic ball, etc. The energy storage state of the second elastic component 221 can be a stretched state or a compressed state, which is specifically related to its installation position, type, etc.; taking the use of a spring as an example, the second elastic component 221 can be sleeved on the locking component 22, and its two ends can respectively act on the locking component 22 and the lock seat 25. The locking component 22 and the lock seat 25 can be provided with a boss, a shoulder and other structures to provide a support position and / or a connection position for the spring; when the locking component 22 is in an extended state and acts on the locking mating portion 212c, the state of the second elastic component 221 is also not limited.

[0060] The aforementioned thermal component 23 can be directly connected to the locking component 22. At this time, the thermal component 23 deformed by heat can directly interact with the locking component 22 to drive the locking component 22 to move. It can be understood that the driving force generated by the thermal component 23 on the locking component 22 needs to be greater than the deformation force of the aforementioned second elastic component 221.

[0061] In addition, a transmission mechanism 26 may also be provided, and the thermally-actuated component 23 may also interact with the locking component 22 via the transmission mechanism 26 , which is more conducive to adjusting the installation position of related components according to the space in the side valve body 2 .

[0062] For example, if there is a transmission mechanism 26, Figure 3 As shown, the transmission mechanism 26 may include a first swing arm 261 that is hingedly arranged, and the first swing arm 261 has a first end and a second end that are opposite to each other, the first end may interact with the locking component 22, and the second end may interact with the thermal component 23. With such an arrangement, when the thermal component 23 is deformed by heat, the first swing arm 261 may be driven to rotate relative to its hinge point, thereby driving the locking component 22 to act.

[0063] Here, the embodiment of the present invention does not limit the position of the hinge point of the first swing arm 261, as long as the above-mentioned technical effect can be achieved; in the embodiment of the accompanying drawings, the first swing arm 261 can be directly hinged on the lock seat 25, so that it is possible to avoid re-setting the hinged fixing components, which is conducive to simplifying the structure and improving the compactness of the equipment.

[0064] The first swing arm 261 and the locking component 22 can have various modes of action, as an exemplary explanation: 1) the end of the locking component 22 away from the locking fitting portion 212c can have a head with a relatively large radial dimension, and the first end of the first swing arm 261 can be located between the end surface of the head relatively close to the locking fitting portion 212c and the lock seat 25, so that when the first swing arm 261 rotates relative to its hinge point, the head of the locking component 22 can be moved by the first end to drive the locking component 22 to axially displace. This scheme is actually shown in the accompanying drawings. Scheme; 2) the locking component 22 may be provided with a slot or a socket, and then the first end of the first swing arm 261 may be inserted into the slot or the socket, which may also realize the movement of the locking component 22; 3) the first end of the first swing arm 261 may be provided with a through hole, and the locking component 22 may be inserted into the through hole. The locking component 22 may also be provided with the aforementioned head, and the size of the head is larger than the through hole. With such a configuration, when the first swing arm 261 rotates around the hinge point, the locking component 22 may also be pulled by the head to perform axial displacement.

[0065] The thermal component 23 can be directly connected to the first swing arm 261, or can be indirectly connected to the first swing arm 261 by other components. Figure 3 The transmission mechanism 26 may further include a mounting frame 262, which may be fixed on the valve sleeve 24. The mounting frame 262 may be provided with a driving rod 262a that can move axially, and the driving rod 262a may be hinged to the second end of the first swing arm 261. The thermal component 23 may interact with the driving rod 262a to drive the first swing arm 261 to rotate through the driving rod 262a, thereby realizing indirect transmission.

[0066] The thermal component 23 is a component that can be deformed by heat, for example, a component such as paraffin that is deformed due to high-temperature phase change or a memory alloy component. Taking the memory alloy component as an example, the memory alloy component can interact with the drive rod 262a. Under normal temperature conditions, the memory alloy component can remain in its original state. When the set temperature condition is reached, the memory alloy component can be deformed to drive the drive rod 262a to perform axial displacement.

[0067] The structure of the memory alloy member can be various. In the embodiment of the present invention, the memory alloy member can be a memory spring, and is sheathed on the driving rod 262a. For details, please refer to Figure 3The end of the driving rod 262a away from the first swing arm 261 hinged thereto may have a head with a relatively large radial dimension, and the memory spring may be located between the head and the mounting frame 262. When the set temperature condition is reached, the memory spring can extend. Since the mounting frame 262 is fixed, the extended memory spring can push the driving rod 262a to perform axial displacement through the head.

[0068] In addition to the above-mentioned thermal component 23, which is a driving element, the embodiment of the present invention can also be provided with an electromagnetic component (not shown in the figure) as an auxiliary drive, and the electromagnetic component can also interact with the drive rod 262a. When powered on, the electromagnetic component can also drive the drive rod 262a to perform axial displacement. The electromagnetic component can specifically be an electromagnet formed by an electromagnetic coil, etc., which can be combined with the drive rod 262a to form an electromagnetic drive assembly. The drive rod 262a is actually equivalent to the iron core of the electromagnetic drive assembly. When the electromagnetic component is powered on, it can drive the drive rod 262a to perform axial displacement. The above-mentioned electromagnetic component can be installed in the mounting frame 262, or it can be installed in other positions. When installed in the mounting frame 262, the mounting frame 262 can also be understood as a magnetic conductor of the electromagnetic drive assembly.

[0069] The judgment condition for starting the electromagnetic component can also be temperature. In this case, a temperature sensor 4 and a control module 27 can also be set. The control module 27 can be a circuit board, etc., which can be connected to the temperature sensor 4 and the electromagnetic component by signal. The temperature sensor 4 is used to detect the ambient temperature. The control module 27 is used to control the opening and closing of the electromagnetic component according to the ambient temperature measured by the temperature sensor 4. The starting condition can still be the aforementioned set temperature condition. Alternatively, since the aforementioned set temperature condition is set for the thermal component 23, and the temperature sensor 4 is not necessarily set close to the thermal component 23, the judgment condition based on the temperature sensor 4 can also be different from the aforementioned set temperature condition, which can be determined in combination with actual conditions.

[0070] The combination of the electromagnetic component and the temperature sensor 4 and the thermal component 23 actually provides the gas switch valve provided by the present invention with double insurance against fire disasters, and is more conducive to ensuring that the gas switch valve is shut off in time when a fire occurs.

[0071] The number of temperature sensors 4 can be one or more. When there are more than one, each temperature sensor can be set at a different position to expand the detection range. In the embodiment of the accompanying drawings, the temperature sensor 4 is set on the outer wall of the auxiliary valve body 5. The structure and function of the auxiliary valve body 5 are described in detail below.

[0072] In addition to the temperature signal transmitted by the above-mentioned temperature sensor 4, a seismic sensor (not shown in the figure) can also be set, and the control module 27 can also be connected to the seismic sensor by signal. The seismic sensor can specifically be a six-axis attitude sensor, etc., which can be used to detect the magnitude of the earthquake. The control module 27 can control the opening and closing of the electromagnetic component according to the magnitude measured by the seismic sensor.

[0073] The specific magnitude condition is not limited here. During implementation, technical personnel in this field can set it according to specific needs. For example, the magnitude condition can be set to level six. That is, when the detected magnitude reaches level six or above, the control module 27 can send a signal to the electromagnetic component to drive the drive rod 262a to move through the electromagnetic component.

[0074] Likewise, there may be multiple seismic sensors. When there are multiple seismic sensors, each seismic sensor may be disposed at a different position to expand the detection range.

[0075] A battery module 28 can also be arranged in the side valve body 2. The battery module 28 can specifically be a lithium battery, etc., which is used to power the electromagnetic component. In this way, the startup of the electromagnetic component does not rely on an external power supply. Even if the external power supply fails, it does not affect the normal use of the electromagnetic component. The anti-interference ability of the gas switch valve provided by the present invention can be ensured, which is beneficial to ensuring the safety of gas control in disasters such as fire and earthquake.

[0076] by Figure 5 From a perspective, one end of the valve stem 212 away from the valve core 211 can extend from the side valve body 2 to form a manual operation portion 212a. In practice, the valve stem 212 can be driven by the manual operation portion 212a to manually open the gas switch valve. In combination with the above content, it can be seen that when the manual operation portion 212a is manually lifted, the first elastic component 212b will be compressed and accumulate energy.

[0077] To facilitate operation, a handle 212a-1 can be provided on the manual operating part 212a. The shape and structure of the handle 212a-1 can be set as needed. The connection method between the handle 212a-1 and the manual operating part 212a is not limited here, and can specifically be welding, threaded connection, interference fit, etc., as long as the reliable connection between the two can be guaranteed.

[0078] Furthermore, a valve cover 3 may be included, which may be installed on the side valve body 2 to cover the manual operation part 212a and the handle 212a-1. The valve cover 3 may be a transparent cover to facilitate direct observation of the position of the manual operation part 212a from the outside, thereby determining the current state of the gas switch valve.

[0079] Taking into account the convenience of opening and closing, the valve cover 3 and the side valve body 2 (cover portion 2b-2, see the following description for details) can be connected in a detachable manner, such as a threaded connection, a slight interference fit, etc.

[0080] In addition to manual valve opening, an embodiment of the present invention also provides a solution for manual valve closing. Specifically, it may also include an elastic pressing component 29 that at least partially extends out of the side valve body 2. The aforementioned transmission mechanism 26 may also include a second swing arm 263 that is hingedly arranged. The second swing arm 263 has a first end and a second end that are opposite to each other. The first end can act on the locking component 22, and the second end can act on the elastic pressing component 29. The elastic pressing component 29 can drive the second swing arm 263 to rotate so that the locking component 22 disengages from the locking mating portion 212c, thereby realizing the manual valve closing of the gas switch valve provided by the present invention.

[0081] The elastic pressing component 29 may include a pressing cap 291 and a third elastic component 292. The pressing cap 291 may be mounted on the valve stem 212, and the third elastic component 292 interacts with the pressing cap 291. Similar to the first elastic component 212b and the second elastic component 221, the third elastic component 292 may also be an elastic element of various styles such as a spring, a tension rope, and an elastic ball. When the pressing cap 291 is pressed down to drive the second swing arm 263 to rotate and unlock, the third elastic component 292 may also be in an energy storage state to prepare for the automatic return of the pressing cap 291 when the pressing force disappears. This energy storage state may be a tension state or a compression state, which is specifically related to the installation position and type of the third elastic component 292. Taking the scheme of using a spring as an example, the third elastic component 292 can be externally mounted on the valve sleeve 24, and its two ends can respectively act on the pressure cap 291 and the valve sleeve 24. The pressure cap 291 and the valve sleeve 24 can be provided with bosses, shoulders and other structures to provide a support position and / or a connection position for the spring. It should be noted that one end of the spring is fixed to act on the pressure cap 291, but the other end of the spring is not limited to acting on the valve sleeve 24, and can also act on other components or parts in the side valve body 2, as long as the above-mentioned effect can be achieved.

[0082] The structure of the pressing cap 291 can be varied, as long as it can achieve driving the second swing arm 263 and unlocking the locking component 22 and allowing the third elastic component 292 to store energy. Figure 3 , Figure 5 As shown, the pressure cap 291 may include a small neck and a large neck, and the side valve body 2 may be provided with an extension hole. The small neck of the pressure cap 291 may extend from the side valve body 2, and the size of the large neck may be larger than the extension hole. In this way, the large neck of the pressure cap 291 may be located in the side valve body 2 and abut against the inner wall of the side valve body 2 to avoid being ejected.

[0083] The matching structure between the first end of the second swing arm 263 and the locking component 22 can be set with reference to the first swing arm 261, and no repeated description is given here. The position of the hinge point of the second swing arm 263 is also not limited, as long as the above-mentioned technical effect can be achieved. In the embodiment of the accompanying drawings, the second swing arm 263 can also be hinged on the lock seat 25 to simplify the structure and improve the compactness of the device.

[0084] Furthermore, a driving component 210 may be included. The driving component 210 is provided with a locking rod 210a that can move in the axial direction. The driving component 210 can drive the locking rod 210a to interact with the valve core assembly 21 to limit the axial displacement of the valve core assembly 21 when the valve port 12 is in a closed state. The driving component 210 may also be connected to the control module 27 by signal, and the control module 27 controls the opening and closing of the driving component 210.

[0085] That is to say, when the valve port 12 is in a closed state, it can also be locked by the locking rod 210a to avoid accidental opening of the valve port 12, which can further improve the safety performance; and when the valve port 12 needs to be opened, the locking rod 210a can be controlled to retract first to release the lock on the lock core assembly 21, and then the aforementioned manual valve opening can be performed.

[0086] The driving component 210 may also be an electromagnetic driving component. The specific structure of the electromagnetic driving component may be designed with reference to the prior art. The electromagnetic driving component may be powered externally or internally. In the embodiment of the present invention, it is preferred to use an internal power supply to improve the anti-interference performance of the device. The power source of the electromagnetic driving component may also be the aforementioned battery module 28.

[0087] In addition, the driving component 210 may also adopt other driving elements, such as a motor, an air cylinder, an oil cylinder, etc., and accordingly, the connection form between these driving elements and the locking rod 210a may also be adaptively changed. For example, if the driving component 210 is a motor, a worm gear mechanism or a gear rack mechanism may be provided between the rotating shaft of the motor and the locking rod 210a, so as to convert the rotational displacement output by the motor into the linear displacement required by the locking rod 210a; and if the driving component 210 is a driving element such as an air cylinder or an oil cylinder that can directly generate a linear displacement, the locking rod 210a may be directly connected to the piston rod of these driving elements, or the locking rod 210a itself may be the piston rod of these driving elements.

[0088] Combination Figure 4The side valve body 2 may include a valve seat 2a and a valve cover 2b. The valve seat 2a may be docked with the main valve body 1 to enclose the main activity space of the matching part of the valve core portion 211 and the valve port 12. The end of the valve sleeve 24 close to the main valve body 1 may be provided with a mounting disc portion 241. The valve sleeve 24 may be connected to the valve seat 2a through the mounting disc portion 241. The portion where the valve core portion 211 and the valve stem portion 212 are connected may be located in the valve sleeve 24. The valve cover 2b may be covered on the outside of the valve sleeve 24 to shield the aforementioned locking component 22, thermal component 23, valve sleeve 24, lock seat 25, transmission mechanism 26, control module 27, battery module 28, drive component 210, etc.

[0089] The valve cover 2b can be a split structure, specifically including a cover portion 2b-1 and a cover portion 2b-2 to facilitate installation. The cover portion 2b-1 can cover the periphery, and the cover portion 2b-2 can cover the axial direction. The cover portion 2b-1 and the cover portion 2b-2 can be fixedly connected by welding, threaded connection, etc.; the cover portion 2b-1 can also be provided with a wire outlet hole 2b-11.

[0090] Furthermore, it can also include an auxiliary valve body 5, which can be axially connected to the main valve body 1. The specific connection method can be a flange connection. A fire-blocking component 51 can be installed between the two to block the backfire inside the gas pipeline and effectively prevent the fire from spreading when the gas pipeline is on fire.

[0091] The fire-blocking component 51 may specifically be a fire-blocking net. In a direction away from the fire-blocking component 51 , the internal passage of the auxiliary valve body may be gradually reduced to ensure the consistency of the overall flow rate of the gas pipeline.

[0092] Furthermore, it can also include a valve state sensor and a display device. The valve state sensor can specifically be a Hall sensor, etc., for detecting the state of the valve port 12. The display device can specifically be a component with a display screen, which can be connected to the valve state sensor signal and can display the state of the valve port 12 measured by the valve state sensor, so as to obtain the state of the gas switch valve.

[0093] The display device can be directly arranged on the main valve body 1, the side valve body 2 or the auxiliary valve body 5, or the display device can also be a remote component, such as being arranged in a control center. In fact, in addition to displaying the valve opening and closing states, the display device can also display the temperature measured by the temperature sensor 4, the gas flow rate inside the gas channel 11 and other related information, and it is only necessary to establish a signal transmission relationship between the display device and the relevant detection components.

[0094] An operating switch is also provided on the outside of the main valve body 1 , and the operating switch can control the valve core assembly 21 to close the valve port 12 . Specifically, it can be connected to the aforementioned electromagnetic component signal, and then the valve port 12 is closed through the electromagnetic component.

[0095] The operation switch can be integrated with the display device, and when the display device is a remote component, this can actually realize the remote closing of the gas switch valve. The display device can have a touch screen, so the operation switch can also be a virtual button set on the touch screen.

[0096] From the above content, it can be seen that the gas switch valve provided by the present invention integrates multiple functions such as manual switch valve function, automatic valve closing function of the thermal component 23 under set temperature conditions, automatic valve closing function of the electromagnetic component according to temperature conditions or earthquake conditions, valve locking function of the driving component 210, fire-blocking function of the fire-blocking component 51 and remote valve closing, etc., and has stronger anti-interference ability and is safer to use.

[0097] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A gas on-off valve, comprising a main valve body (1) and a valve core assembly (21), wherein a gas passage (11) is provided in the main valve body (1), the gas passage (11) has a valve port (12), the valve core assembly (21) can be driven to close or open the valve port (12) to shut off or open the gas passage (11), characterized in that: It also comprises a first elastic component (212b) and a locking component (22), wherein the first elastic component (212b) acts on the valve core assembly (21), and the valve core assembly (21) is further provided with a hole-shaped or groove-shaped locking matching portion (212c), and when the valve port (12) is in an open state, the first elastic component (212b) is in an energy storage state, and the locking component (22) is plugged into the locking matching portion (212c) to limit the axial displacement of the valve core assembly (21); It also comprises a thermally active component (23), the thermally active component (23) being in driving connection with the locking component (22), the thermally active component (23) being capable of driving the locking component (22) to disengage from the locking mating portion (212c) under set temperature conditions, and the first elastic component (212b) being capable of driving the valve core assembly (21) to close the valve port (12); The thermally movable component (23) and the locking component (22) are also included. The thermally movable component (23) and the locking component (22) are interacted with each other through the transmission mechanism (26). The transmission mechanism (26) includes a first swing arm (261) which is hingedly arranged. The first swing arm (261) has a first end and a second end which are opposite to each other. The first end of the first swing arm (261) interacts with the locking component (22), and the second end of the first swing arm (261) interacts with the thermally movable component (23). The transmission mechanism (26) also includes a mounting frame (262). The mounting frame (262) is provided with a driving rod (262a) which can move in the axial direction. The driving rod (262a) is hingedly connected to the second end of the first swing arm (261). The thermally movable component (23) and the driving rod (262a) interact with each other. It also includes a side valve body (2), the side valve body (2) is located on one radial side of the main valve body (1) and is connected to the main valve body (1); the transmission mechanism (26) also includes a second swing arm (263) that is hingedly arranged; it also includes an elastic pressing component (29) that at least partially extends out of the side valve body (2), the second swing arm (263) having a first end and a second end that are opposite to each other, the first end of the second swing arm (263) interacts with the locking component (22), the second end of the second swing arm (263) interacts with the elastic pressing component (29), and the elastic pressing component (29) can drive the second swing arm (263) to rotate so that the locking component (22) is disengaged from the locking fitting portion (212c); The first elastic component (212b) is a spring.

2. The gas switching valve according to claim 1, characterized in that: A valve sleeve (24) is provided in the side valve body (2), the valve core assembly (21) is slidably connected to the valve sleeve (24), and the locking component (22) is mounted on the valve sleeve (24).

3. The gas switching valve according to claim 2, characterized in that: The valve core assembly (21) comprises a valve core portion (211) and a valve stem portion (212) which are connected to each other; the valve core portion (211) cooperates with the valve port (12) to realize closing or opening of the valve port (12); the valve stem portion (212) is slidably connected to the valve sleeve (24); and the locking matching portion (212c) is arranged on the valve stem portion (212).

4. The gas switching valve according to claim 3, characterized in that: The first elastic component (212b) is externally mounted on the valve stem portion (212); one end of the spring acts on the valve stem portion (212), and the other end acts on the valve sleeve (24).

5. The gas switching valve according to claim 3, characterized in that: One end of the valve stem portion (212) away from the valve core portion (211) extends out from the side valve body (2) to form a manual operating portion (212a).

6. The gas switching valve according to claim 5, characterized in that: It also comprises a valve cover (3), the valve cover (3) being mounted on the side valve body (2) and being used to cover the manual operating part (212a); and / or, The manual operation portion (212a) is connected to a handle (212a-1).

7. The gas switching valve according to claim 3, characterized in that: The locking matching portion (212c) is an annular groove provided on the outer peripheral wall of the valve stem portion (212).

8. The gas switching valve according to claim 3, characterized in that: It also includes a lock seat (25), the lock seat (25) is mounted on the valve sleeve (24), and the locking component (22) is mounted on the lock seat (25); The valve body further comprises a second elastic component (221), wherein the second elastic component (221) acts on the locking component (22); when the valve port (12) is in a closed state, the second elastic component (221) is in an energy storage state; when the locking component (22) is opposite to the locking matching portion (212c), the second elastic component (221) can enable the locking component (22) to be inserted into the locking matching portion (212c).

9. The gas switching valve according to claim 1, characterized in that: The thermal component (23) is a memory alloy piece, the memory alloy piece interacts with the drive rod (262a), and under the set temperature condition, the memory alloy piece can deform to drive the drive rod (262a) to perform axial displacement.

10. The gas switching valve according to claim 9, characterized in that: The memory alloy part is a memory spring, which is sleeved on the driving rod (262a), and one end of the memory spring acts on the mounting frame (262), and the other end acts on the driving rod (262a).

11. The gas switching valve according to claim 1, characterized in that: It also includes an electromagnetic component, which also acts on the driving rod (262a) and can also drive the driving rod (262a) to perform axial displacement.

12. The gas switching valve according to claim 11, characterized in that: It also comprises a temperature sensor (4) and a control module (27), wherein the control module (27) is signal-connected to the temperature sensor (4) and the electromagnetic component, the temperature sensor (4) is used to detect the ambient temperature, and the control module (27) is used to control the opening and closing of the electromagnetic component according to the ambient temperature measured by the temperature sensor (4).

13. The gas switching valve according to claim 12, characterized in that: It also includes a seismic sensor and a control module (27), wherein the control module (27) is signal-connected to the seismic sensor and the electromagnetic component, the seismic sensor is used to detect the magnitude of an earthquake, and the control module (27) is used to control the opening and closing of the electromagnetic component according to the magnitude measured by the seismic sensor.

14. The gas switching valve according to claim 11, characterized in that: A battery module (28) is also provided in the side valve body (2) for supplying power to the electromagnetic component.

15. The gas switching valve according to claim 3, characterized in that: The elastic pressing component (29) comprises a pressing cap (291) and a third elastic component (292); the pressing cap (291) is sleeved on the valve stem (212); and the third elastic component (292) interacts with the pressing cap (291).

16. The gas switching valve according to claim 3, characterized in that: The valve assembly (21) further comprises a driving component (210), wherein the driving component (210) is provided with a locking rod (210a) capable of moving in the axial direction, and the driving component (210) is capable of driving the locking rod (210a) to interact with the valve core assembly (21) to limit the axial displacement of the valve core assembly (21) when the valve port (12) is in a closed state.

17. The gas switching valve according to claim 16, characterized in that: The driving component (210) is an electromagnetic driving component, and the electromagnetic driving component is powered by an external power supply, or the electromagnetic driving component is powered by a battery module (28) arranged in the gas switching valve.

18. The gas switching valve according to claim 3, characterized in that: The side valve body (2) comprises a valve seat (2a) and a valve cover (2b); the valve seat (2a) is butt-jointed with the main valve body (1); an end of the valve cover (24) close to the main valve body (1) is provided with a mounting disc portion (241); the valve cover (24) is connected to the valve seat (2a) via the mounting disc portion (241); and the valve cover (2b) is arranged on the outside of the valve cover (24).

19. The gas switching valve according to any one of claims 1 to 18, characterized in that: It also comprises an auxiliary valve body (5), the auxiliary valve body (5) being butt-jointed with the main valve body (1) along the axial direction, with a fire-blocking component (51) being installed between the two.

20. The gas switching valve according to claim 19, characterized in that: The fire-blocking component (51) is a fire-blocking net; and / or, In a direction away from the fire-blocking component (51), the internal passage of the auxiliary valve body (5) is arranged to gradually contract.

21. The gas switching valve according to any one of claims 1 to 18, characterized in that: It also comprises a valve state sensor and a display device, wherein the valve state sensor is used to detect the state of the valve port (12), and the display device is connected to the valve state sensor signal and can display the state of the valve port (12) measured by the valve state sensor.

22. The gas switching valve according to claim 21, characterized in that: An operating switch is also provided on the outside of the main valve body (1), and the operating switch can control the valve core assembly (21) to close the valve port (12).

23. The gas switching valve according to claim 22, characterized in that: The operation switch is integrated with the display device.

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