CN212672506U - Gas switch valve - Google Patents

Abstract

A gas switch valve comprises a main valve body and a valve core assembly, wherein a gas channel is arranged in the main valve body, the gas channel is provided with a valve port, and the valve core assembly is driven to close or open the valve port so as to cut off or conduct the gas channel; the valve core assembly is also provided with a hole-type or groove-type locking matching part, when the valve port is in an open state, the first elastic part is in an energy storage state, and the locking part is inserted in the locking matching part to limit the axial displacement of the valve core assembly; the valve core assembly is characterized by further comprising a thermal driving component, the thermal driving component is in transmission connection with the locking component, the thermal driving component can drive the locking component to be separated from the locking matching part under the set temperature condition, the first elastic component can drive the valve core assembly to close the valve port, an external power source and a control signal are not needed in the driving mode, the anti-interference performance is higher, and the safety is higher.

Description

Gas switch valve

Technical Field

The utility model relates to a gas valve technical field, concretely relates to gas switch valve.

Background

The existing gas switch valve arranged in a gas pipeline generally needs an external power supply and a control signal for control, so that the gas switch valve cannot be timely turned off once the external power supply and the control signal fail when a fire disaster dangerous condition happens, and a larger disaster condition is easily caused.

Therefore, how to provide a solution to overcome or alleviate the above drawbacks remains a technical problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a gas switch valve is equipped with the thermal component in it, under reaching the settlement temperature condition, the thermal component can move by oneself in order to order about the locking part unblock, and then realizes closing the valve, and it closes the valve and need not external power source, control signal, and interference immunity is stronger, and the security is higher.

In order to solve the technical problem, the utility model provides a gas switch valve, including the main valve body and case subassembly, be equipped with the gas channel in the main valve body, the gas channel has the valve port, the case subassembly is driven and can be closed or open the valve port, in order to turn off or switch on the gas channel; the valve core assembly is also provided with a hole-type or groove-type locking matching part, when the valve port is in an open state, the first elastic part is in an energy storage state, and the locking part is inserted in the locking matching part to limit the axial displacement of the valve core assembly; the valve core assembly comprises a valve core assembly and a locking component, wherein the valve core assembly comprises a valve body and a valve body matched with the valve body, the locking component is arranged on the valve body, the valve body is arranged on the valve body, the locking component is in transmission connection with the valve body, the thermal component can drive the locking component to be separated from the locking matching part under.

By adopting the structure, when the ambient temperature reaches the set temperature condition, namely, when a fire disaster dangerous condition exists, the thermal component can automatically act to drive the locking component to be separated from the locking matching part, so that the locking on the valve core assembly is released, the valve port can be automatically closed by the valve core assembly under the action of the first elastic component, so that the gas channel is cut off, the driving mode does not need to use an external power supply, a control signal and the like, even if the external power supply and the control signal fail, the timely cut-off of the gas switch valve can be ensured, the gas delivery is cut off, the expansion of the disaster can be greatly avoided, and the safety is improved.

Optionally, the valve further comprises a side valve body, the side valve body is located on one radial side of the main valve body and connected with the main valve body, a valve sleeve is arranged in the side valve body, the valve core assembly is connected with the valve sleeve in a sliding manner, and the locking component is installed on the valve sleeve.

Optionally, the valve core assembly includes a valve core portion and a valve rod portion, which are connected to each other, the valve core portion is matched with the valve port to close or open the valve port, the valve rod portion is slidably connected to the valve sleeve, and the locking matching portion is disposed on the valve rod portion.

Optionally, the first elastic member is a spring sleeved on the valve rod portion, one end of the spring is engaged with the valve rod portion, and the other end of the spring is engaged with the valve sleeve.

Optionally, one end of the valve rod part, which is far away from the valve core part, extends out of the side valve body to form a manual operation part.

Optionally, the manual operating part is mounted on the side valve body, and the manual operating part is covered by the valve cover; and/or the manual operation part is connected with a handle.

Optionally, the locking engagement portion is an annular groove provided in the outer peripheral wall of the stem portion.

Optionally, the valve further comprises a lock base, the lock base is mounted on the valve sleeve, and the locking part is mounted on the lock base; 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 matching part, the second elastic component can enable the locking component to be inserted into the locking matching part.

Optionally, a transmission mechanism is further included, through which the thermal assembly interacts with the locking assembly.

Optionally, the transmission mechanism comprises a first swing arm, which is hingedly arranged, having opposite first and second ends, the first end interacting with the locking member and the second end interacting with the thermal member.

Optionally, the transmission mechanism further includes a mounting bracket, the mounting bracket is provided with a driving rod capable of moving along the axial direction, the driving rod is hinged with the second end portion of the first swing arm, and the thermal actuator acts on the driving rod.

Optionally, the thermal element is a memory alloy element, the memory alloy element interacts with the driving rod, and the memory alloy element can deform under the set temperature condition to drive the driving rod to perform axial displacement.

Optionally, the memory alloy member is a memory spring, which is sleeved on the driving rod, and one end of the memory spring is engaged with the mounting frame, and the other end of the memory spring is engaged with the driving rod.

Optionally, the drive rod further comprises an electromagnetic component, the electromagnetic component also interacts with the drive rod, and the electromagnetic component can drive the drive rod to perform axial displacement.

Optionally, the electromagnetic component further comprises a temperature sensor and a control module, the control module is in signal connection with the temperature sensor and the electromagnetic component, the temperature sensor is used for detecting the ambient temperature, and the control module is used for controlling the opening and closing of the electromagnetic component according to the ambient temperature detected by the temperature sensor.

Optionally, the earthquake detection device further comprises a seismic sensor and a control module, the control module is in signal connection with the seismic sensor and the electromagnetic component, the seismic sensor is used for detecting the magnitude of an earthquake, and the control module is used for controlling the opening and closing of the electromagnetic component according to the magnitude measured by the seismic sensor.

Optionally, a battery module is further disposed in the side valve body, and is used for supplying power to the electromagnetic component.

Optionally, the transmission mechanism further comprises a second swing arm hinged to the second swing arm; the locking device comprises a side valve body and a second swing arm, and is characterized by further comprising an elastic pressing part at least partially extending out of the side valve body, wherein the second swing arm is provided with a first end and a second end which are opposite to each other, the first end is acted with the locking part, the second end is acted with the elastic pressing part, and the elastic pressing part can drive the second swing arm to rotate so that the locking part is separated from the locking matching part.

Optionally, the elastic pressing component includes a pressing cap and a third elastic component, the pressing cap is sleeved outside the valve stem portion, and the third elastic component interacts with the pressing cap.

Optionally, the valve further comprises a driving component, the driving component is provided with a locking rod capable of acting along the axial direction, and the driving component can drive the locking rod to act with the valve core assembly so as to limit the axial displacement of the valve core assembly when the valve port is in the closed state.

Optionally, the driving component is an electromagnetic driving component, and the electromagnetic driving component is externally powered, or the electromagnetic driving component is powered by a battery module arranged in the gas switching valve.

Optionally, the side valve body includes a valve seat and a valve cover, the valve seat is butted with the main valve body, one end of the valve housing close to the main valve body is provided with an installation disc part, the valve housing is connected with the valve seat by the installation disc part, and the valve cover is arranged outside the valve housing.

Optionally, the fire-retardant valve further comprises an auxiliary valve body, the auxiliary valve body is in axial butt joint with the main valve body, and a fire-retardant component is arranged between the auxiliary valve body and the main valve body.

Optionally, the fire barrier member is a fire barrier mesh; and/or, the inner passage of the secondary valve body is tapered in a direction away from the firestop member.

Optionally, the valve further comprises a valve state sensor and a display device, the valve state sensor is used for detecting the state of the valve port, and the display device is in signal connection with the valve state sensor and can display the state of the valve port detected by the valve state sensor.

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

Optionally, the operation switch is integrated with the display device.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a gas switching valve provided by the present invention;

FIG. 2 is a schematic view of the valve cover and valve cap of FIG. 1 with the valve cover and valve cap removed;

FIG. 3 is a view showing a connection structure of the thermal actuator, the elastic pressing member, the valve housing, the locking member, and the actuator;

FIG. 4 is an exploded view of the side valve body and bonnet;

FIG. 5 is a cross-sectional view of the side valve body internal components;

FIG. 6 is a cross-sectional view of the primary and secondary valve bodies.

The reference numerals in fig. 1-6 are illustrated as follows:

1, a main valve body, 11 gas channels and 12 valve ports;

the valve comprises a 2-side valve body, a 2a valve seat, a 2b valve cover, a 2b-1 cover, a 2b-11 outlet hole, a 2b-2 cover, a 21 valve core assembly, a 211 valve core, a 212 valve rod, a 212a manual operation part, a 212a-1 handle, a 212b first elastic component, a 212c locking matching part, a 22 locking component, a 221 second elastic component, a 23 thermal component, a 24 valve sleeve, a 241 installation disk part, a 25 locking seat, a 26 transmission mechanism, a 261 first swing arm, 262 installation frames, 262a driving rod, 263 second swing arm, 27 control modules, 28 battery modules, 29 elastic pressing components, 291 pressing caps, 292 third elastic components, 210 driving components and 210a locking rods;

3, valve cover;

4 a temperature sensor;

5 auxiliary valve bodies and 51 fire retardant parts.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

The terms "first," "second," and the like, herein are used for convenience in describing two or more structures or components that are identical or similar in structure and/or function and do not denote any particular limitation in order and/or importance.

Referring to fig. 1 to 6, fig. 1 is a schematic structural view of an embodiment of a gas switching valve provided in the present invention, fig. 2 is a schematic structural view of fig. 1 with a valve cover and a valve cover removed, fig. 3 is a connection structure diagram of a thermal element, an elastic pressing element, a valve sleeve, a locking element, and a transmission mechanism, fig. 4 is an exploded view of a side valve body and a valve cover, fig. 5 is a sectional view of an internal component of the side valve body, and fig. 6 is a sectional view of a main valve body and an auxiliary valve body.

As shown in fig. 1-6, the utility model provides a gas switch valve, including the main valve body 1 and case subassembly 21, be equipped with gas channel 11 in the main valve body 1, this gas channel 11 specifically can be the inside passage of two-way switch-on, has gas import and gas export, and gas channel 11 still has valve port 12 between gas import and gas export, and case subassembly 21 is driven and can be closed or open valve port 12 to turn off or switch on gas channel 11.

Different from the background art, the utility model provides a gas switch valve still includes first elastic component 212b, locking part 22 and thermal dynamic part 23, and first elastic component 212b is used with case subassembly 21, and case subassembly 21 still is equipped with the locking cooperation portion 212c of pass or cell type, and when case subassembly 21 moved to making valve port 12 be in the open mode, first elastic component 212b was in the energy storage state, and locking part 22 pegs graft in locking cooperation portion 212c to the axial displacement of restriction case subassembly 21, and then keeps the open valve state; the thermal element 23 is in transmission connection with the locking element 22, the thermal element 23 can drive the locking element 22 to be separated from the locking matching part 212c under the set temperature condition, at this time, the energy accumulated by the first elastic element 212b can be released, and the valve core assembly 21 can be driven to close the valve port 12, so as to complete automatic valve closing.

The set temperature condition may be a determination condition of a fire hazard, and here, the embodiment of the present invention does not limit a specific value of the set temperature condition, and in practical applications, a person skilled in the art may set the set temperature condition according to specific situations, for example, the set temperature condition may be a condition of greater than or equal to 70 ℃. The fire risk here may be an external fire such as a fire in a building where the gas pipe is installed, or an internal fire (i.e., a pipe backfire) of the gas pipe.

By adopting the structure, when the environmental temperature reaches the set temperature condition, namely when a fire disaster dangerous condition exists, the thermal actuating component 23 can automatically act to drive the locking component 22 to be separated from the locking matching part 212c, so as to further release the locking on the valve core component 21, and under the action of the first elastic component 212b, the valve core component 21 can automatically close the valve port 12 to realize the shutoff of the gas channel 11.

In a specific scheme, the fuel gas valve further comprises a side valve body 2, wherein the side valve body 2 can be located on one side of the main valve body 1 in the radial direction and connected with the main valve body 1, the radial direction refers to the direction perpendicular to the axial direction of a fuel gas channel 11 in the main valve body 1, and in combination with fig. 6, a valve port 12 can be located on the outer peripheral wall of the main valve body 1; a valve housing 24 may be provided in the side valve body 2, the valve core assembly 21 may be slidably connected with the valve housing 24, and the locking member 22 may be mounted to the valve housing 24.

The valve core assembly 21 may be an integrated structure or a split structure, and may be determined by combining actual conditions. In the embodiment of the drawings, the valve core assembly 21 may include a valve core portion 211 and a valve rod portion 212, which are separated, the valve core portion 211 may be matched with the valve port 12 to close or open the valve port 12, a specific structure of the valve core portion 211 (a combination of each part of the valve sleeve 24 and the valve seat 2a, which is not shown with a section line in fig. 5 and 6), a connection structure of the valve core portion 211 and the valve rod portion 212, and the like, are not limited herein, as long as technical effects that the valve core portion 211 can close the valve port 12, and the valve rod portion 212 can drive the valve core portion 211 to displace, and the like, can be achieved; since the valve core portion 211 engaged with the valve port 12 has a relatively large dimension in a radial direction perpendicular to the axial direction of the valve sleeve 24, the sliding engagement between the valve core assembly 21 and the valve sleeve 24 may actually be the sliding engagement between the valve rod portion 212 and the valve sleeve 24, and the locking engagement portion 212c may be disposed on the valve rod portion 212, or may be disposed on the valve core portion 211, which is specifically related to the installation position of the locking member 22.

Taking the example that the locking matching part 212c is arranged on the valve rod part 212, the locking matching part 212c may be a one-way hole or groove, so that when the valve rod part 212 is installed, considering the installation direction of the valve rod part 212, the locking matching part 212c of the valve rod part 212 and the locking component 22 need to be in the same orientation in the circumferential direction, so as to ensure that the locking component 22 can be inserted into the locking matching part 212c when the valve rod part 212 slides axially relative to the valve sleeve 24, so as to complete the locking of the valve core assembly 21; alternatively, the locking engagement portion 212c may also be an annular groove extending along the circumferential direction, so that the installation direction of the valve stem portion 212 does not need to be considered during installation, and the installation is more convenient.

The first elastic member 212b may be an elastic element in various forms such as a spring, a tensile cord, an elastic ball, etc., as long as the aforementioned technical effects can be achieved. In the embodiment shown in the drawings, the first elastic member 212b may be a spring and is sleeved on the valve stem 212, one end of the spring may interact with the valve stem 212, the other end may interact with the valve housing 24, and a boss, a shoulder, or the like may be provided at a specific interaction position to provide a support position and/or a connection position for the spring.

In the process of opening the valve port 12 by the valve core assembly 21, the first elastic component 212b may gradually store energy to prepare for the subsequent automatic closing of the valve core assembly 21, and the energy storage may be compression energy storage or tensile energy storage, and is specifically related to the installation position, the type, and the like of the first elastic component 212b, and is not limited herein. It should be noted that, when the first elastic component 212b adopts a scheme of tensile energy storage, two end portions of the first elastic component 212b need to be fixedly connected with the valve stem 212 and the valve sleeve 24, which are engaged with each other, so that the first elastic component 212b can generate a tensile force, and a specific fixing manner may be welding, clamping, bonding, and the like, which is not limited herein. In the embodiment shown in the figures, the energy storage process of the first elastic component 212b is a compression process, and in this case, the two end portions of the first elastic component do not need to be fixed, and the structure can be relatively simple.

As for the valve core assembly 21 in the position for closing the valve port 12, the first elastic component 212b may be in a free state or in an energy storage state, but it should be understood that even if the first elastic component 212b is also in the energy storage state, the energy stored by the first elastic component 212b is less than the energy stored by the valve core assembly 21 in the position for opening the valve port 12, that is, the process of gradually opening the valve port 12 by the valve core assembly 21 is actually the process of gradually increasing the energy stored by the first elastic component 212 b.

The valve sleeve 24 may be provided on the outside with a lock housing 25, and the aforementioned locking member 22 may be mounted to the lock housing 25 and axially displaceable relative to the lock housing 25. Further, as shown in fig. 5, a second elastic component 221 may be further 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 (as shown in fig. 5), and the second elastic component 221 may be in the energy storage state, so that when the locking component 22 is opposite to the locking matching portion 212c, the energy stored in the second elastic component 221 may be released to drive the locking component 22 to be inserted into the locking matching portion 212 c.

Similar to the first elastic member 212b, the second elastic member 221 may be an elastic element in various forms such as a spring, a tensile cord, an elastic ball, etc., and the energy storage state of the second elastic member 221 may be a tensile state or a compression state, specifically, depending on the installation position, kind, etc.; taking a spring as an example, the second elastic member 221 may be sleeved on the locking member 22, and both end portions thereof may respectively interact with the locking member 22 and the lock seat 25, and both the locking member 22 and the lock seat 25 may be provided with a boss, a shoulder, and the like, so as to provide a supporting position and/or a connecting position for the spring; the state of the second elastic member 221 is also not limited when the lock member 22 is in the extended state to interact with the lock engagement portion 212 c.

The thermal actuator 23 may be directly connected to the locking member 22, and in this case, the thermal actuator 23 deformed by heat may directly interact with the locking member 22 to actuate the locking member 22. It is understood that the driving force of the thermal member 23 to the locking member 22 needs to be greater than the deformation force of the aforementioned second elastic member 221.

Besides, a transmission mechanism 26 may be provided, and the thermal actuator 23 may also interact with the locking member 22 through the transmission mechanism 26, which is more advantageous in adjusting the installation position of the relevant components according to the space inside the side valve body 2.

Taking the presence of the transmission mechanism 26 as an example, as shown in fig. 3, the transmission mechanism 26 may comprise a first swing arm 261 that is hingedly arranged, the first swing arm 261 having opposite first and second ends, the first end being capable of interacting with the locking member 22 and the second end being capable of interacting with the thermal member 23. With this arrangement, when the thermal actuator 23 is deformed by heat, the first swing arm 261 can be driven to rotate relative to the hinge point thereof, and the locking member 22 can be driven to operate.

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 technical effects can be achieved; in the embodiment of the figures, the first swing arm 261 can be directly hinged to the lock seat 25, so that the need to provide a hinged fastening member again can be avoided, which is advantageous for simplifying the structure and improving the compactness of the device.

The action of the first swing arm 261 and the locking member 22 may be varied, as an exemplary illustration: 1) one end of the locking member 22, which is far away from the locking mating portion 212c, may have a head portion with a relatively large radial dimension, and the first end of the first swing arm 261 may be located between the end surface of the head portion, which is relatively close to the locking mating portion 212c, and the lock holder 25, so that when the first swing arm 261 rotates relative to the hinge point thereof, the head portion of the locking member 22 may be pulled by the first end portion to drive the locking member 22 to perform axial displacement, which is actually the scheme in the drawings; 2) a scheme that the locking part 22 is provided with a slot or a jack can also be adopted, and then the first end of the first swing arm 261 is inserted into the slot or the jack, which can also realize the poking of the locking part 22; 3) the first end of the first swing arm 261 may be provided with a through hole through which the locking member 22 may be inserted, and the locking member 22 may also be provided with the aforementioned head, and the size of the head is larger than the through hole, so that when the first swing arm 261 rotates around the hinge point, the locking member 22 may be pulled by the head to perform axial displacement.

The thermal element 23 may be directly connected to the first swing arm 261, or may be indirectly connected to the first swing arm 261 via another element. In particular, the embodiment of the present invention may adopt an indirect connection scheme, and with reference to fig. 3, the transmission mechanism 26 may further include an installation frame 262, the installation frame 262 may be fixed on the valve sleeve 24, the installation frame 262 may be provided with a driving rod 262a capable of moving along the axial direction, the driving rod 262a may be hinged to the second end of the first swing arm 261, and 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.

The thermal actuating member 23 is a member that can be deformed by heat, for example, a member that is deformed by high temperature phase transition such as paraffin or a memory alloy member, and for example, the memory alloy member may interact with the driving rod 262a, and the memory alloy member may be maintained in an original state at a normal temperature, and may be deformed to drive the driving rod 262a to perform axial displacement when a set temperature condition is reached.

The structure of memory alloy spare can be various, in the embodiment of the utility model provides an, the memory alloy spare can be memory spring, and overcoat in actuating lever 262a, specifically can refer to fig. 3, actuating lever 262a keeps away from its one end with first swing arm 261 looks articulated and can have the head that radial dimension is great relatively, memory spring can be located between this head and mounting bracket 262, when reaching the settlement temperature condition, memory spring can extend, because mounting bracket 262 is fixed, the memory spring of extension can promote actuating lever 262a through the head and carry out axial displacement.

In addition to the above-mentioned driving element of the thermal actuator 23, an electromagnetic component (not shown) may be provided as an auxiliary drive, and the electromagnetic component may also interact with the driving rod 262a, and when the driving rod 262a is driven to perform axial displacement by the electromagnetic component when the driving rod is powered on. The electromagnetic component may specifically be an electromagnet formed by an electromagnetic coil or the like, and may be combined with the driving rod 262a to form an electromagnetic driving assembly, where the driving rod 262a actually corresponds to an iron core of the electromagnetic driving assembly, and when the electromagnetic component is powered on, it can drive the driving rod 262a to perform axial displacement. The electromagnetic components may be mounted within the mounting bracket 262 or at other locations, and when mounted within the mounting bracket 262, the mounting bracket 262 may also be understood to be a magnetizer for the electromagnetic drive assembly.

The judgment condition for starting the electromagnetic component can also be temperature, at this time, a temperature sensor 4 and a control module 27 can be further arranged, the control module 27 can be specifically a circuit board and the like, the circuit board and the temperature sensor 4 and the electromagnetic component can be in signal connection, the temperature sensor 4 is used for detecting the ambient temperature, the control module 27 is used for controlling the opening and closing of the electromagnetic component according to the ambient temperature measured by the temperature sensor 4, and the starting condition can still be the set temperature condition. Alternatively, since the set temperature condition is set for the thermal actuator 23 and the temperature sensor 4 is not necessarily located close to the thermal actuator 23, the determination condition based on the temperature sensor 4 may be different from the set temperature condition, and may be determined in accordance with the actual situation.

The combination configuration of electromagnetic component and temperature sensor 4 and the configuration of thermal component 23 do in fact the utility model provides a gas switch valve provides the dual fail-safe who resists the conflagration disaster, when more being favorable to guaranteeing the conflagration to take place, in time turn-offs of gas switch valve.

The number of the temperature sensors 4 may be one or a plurality of temperature sensors, and when the number of the temperature sensors is a plurality, each temperature sensor may be disposed at a different position to expand the detection range, the temperature sensors 4 are disposed on the outer wall of the sub-valve body 5 in the embodiment of the drawings, and the structure, the function, and the like of the sub-valve body 5 are described in detail later.

Besides the temperature signal transmitted by the temperature sensor 4, an earthquake sensor (not shown in the figure) can be further provided, the control module 27 and the earthquake sensor can also be in signal connection, the earthquake sensor can be specifically a six-axis attitude sensor and the like, and can be used for detecting the earthquake magnitude of an earthquake, and the control module 27 can control the opening and closing of the electromagnetic component according to the earthquake magnitude measured by the earthquake sensor.

The specific magnitude condition is not limited herein, and in implementation, a person skilled in the art may set the magnitude condition according to specific requirements, for example, the magnitude condition may be set to six levels, that is, when the detected magnitude reaches more than six levels, the control module 27 may send a signal to the electromagnetic component, so as to drive the driving rod 262a to move through the electromagnetic component.

Similarly, the number of the seismic sensors may be plural, and when the number of the seismic sensors is plural, each seismic sensor may be respectively disposed at different positions to expand the detection range.

Can also set up battery module 28 in the side valve body 2, battery module 28 specifically can be lithium cell etc. for the electromagnetic component power supply, like this, this electromagnetic component's start-up can not rely on outside power, even if outside power is invalid, does not influence this electromagnetic component's normal use yet, can guarantee the utility model provides a gas switch valve's interference immunity is favorable to guaranteeing the security of the gas management and control under the disasters such as conflagration, earthquake.

In fig. 5, one end of the valve rod 212, which is far away from the valve core 211, can extend from the side valve body 2 to form a manual operation portion 212a, and in a specific practice, the manual operation portion 212a can drive the valve rod 212 to operate, so as to achieve manual opening of the gas switch valve. As can be seen from the above description, when the manual operation portion 212a is manually lifted, the first elastic member 212b is pressed to store energy.

For convenience of operation, the handle 212a-1 may be disposed on the manual operation portion 212a, the shape and structure of the handle 212a-1 may be set as required, and the connection manner between the handle 212a-1 and the manual operation portion 212a is not limited herein, and may specifically be welding, threaded connection, interference press-fitting, etc., as long as reliable connection between the two can be ensured.

Further, a valve cover 3 may be further included, and the valve cover 3 may be mounted to the side valve body 2 to cover the manual operation portion 212a and the handle 212 a-1. The valve cover 3 may be a transparent cover to facilitate direct external observation of the position of the manual operation portion 212a, thereby determining the current state of the gas switching valve.

In consideration of the convenience of opening and closing, the valve cap 3 and the side valve body 2 (the cap portion 2b-2, see the following description in detail) may be detachably connected, such as a screw connection, a slight interference fit, or the like.

Besides the manual valve opening, the embodiment of the present invention further provides a scheme for manually closing the valve, specifically, the present invention further includes an elastic pressing part 29 at least partially extending out of the side valve body 2, the aforementioned transmission mechanism 26 further includes a second swing arm 263 disposed in an articulated manner, the second swing arm 263 has a first end and a second end, the first end can interact with the locking part 22, the second end can interact with the elastic pressing part 29, the elastic pressing part 29 can drive the second swing arm 263 to rotate, so that the locking part 22 is separated from the locking matching part 212c, thereby implementing the present invention provides a manual valve closing of a gas switch valve.

The elastic pressing member 29 may include a pressing cap 291 and a third elastic member 292, the pressing cap 291 may be sleeved on the valve stem 212, and the third elastic member 292 interacts with the pressing cap 291. Similar to the first elastic member 212b and the second elastic member 221, the third elastic member 292 may be various types of elastic elements such as a spring, a tensile cord, an elastic ball, and the like. When the pressing cap 291 is pressed down to drive the second swing arm 263 to rotate and unlock, the third elastic member 292 may be in an energy storage state to prepare for automatic return of the pressing cap 291 when the pressing force disappears, and the energy storage state may be a tensile state or a compression state, specifically, depending on the installation position, type, and the like of the third elastic member 292. Taking a scheme of using a spring as an example, the third elastic member 292 may be sleeved outside the valve housing 24, two end portions thereof may respectively interact with the pressing cap 291 and the valve housing 24, and both the pressing cap 291 and the valve housing 24 may be provided with a boss, a shaft shoulder, 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 certainly allowed to act on the press cap 291, and the other end of the spring may act on other parts or portions in the side valve body 2, as long as the above-described effects can be achieved, without being limited to the action on the valve housing 24.

The structure of the pressing cap 291 may be various as long as it is possible to achieve driving of the second swing arm 263 and unlocking of the locking part 22 and charging of the third elastic part 292. In the embodiment of the drawings, as shown in fig. 3 and 5, the pressing cap 291 may include a small neck portion and a large neck portion, the side valve body 2 may be provided with an extending hole, the small neck portion of the pressing cap 291 may extend from the side valve body 2, and the large neck portion may be larger than the extending hole, so that the large neck portion of the pressing cap 291 may be located inside the side valve body 2 and abut against the inner wall of the side valve body 2 to prevent the pressing cap from being ejected.

The fitting structure between the first end of the second swing arm 263 and the locking member 22 can be set with reference to the aforementioned first swing arm 261, and will not be described repeatedly herein. The position of the hinge point of the second swing arm 263 is not limited as long as the above technical effects can be achieved, and in the embodiment of the drawings, the second swing arm 263 can be hinged on the lock base 25, so as to simplify the structure and improve the compactness of the device.

Further, a driving member 210 may be further included, and the driving member 210 is provided with a locking rod 210a capable of acting in the axial direction, and the driving member 210 may 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 the closed state. The driving component 210 may also be in signal connection with the control module 27, and the control module 27 controls the on/off of the driving component 210.

That is, when the valve port 12 is in the closed state, the valve port can be locked by the locking rod 210a, so as to avoid the accidental opening of the valve port 12, and further improve the safety performance; when the valve port 12 needs to be opened, the locking rod 210a can be controlled to retract to unlock the plug assembly 21, and then the valve can be opened manually.

The driving part 210 may also be an electromagnetic driving part, and the specific structure of the electromagnetic driving part may be designed according to the prior art, and the electromagnetic driving part may be externally powered or internally powered. In the embodiment of the present invention, an internal power supply scheme is preferably adopted to improve the anti-interference performance of the device, and the power source of the electromagnetic driving component may also be the aforementioned battery module 28.

In addition, the driving unit 210 may also adopt other driving elements, such as a motor, a cylinder, etc., and accordingly, the connection form between these driving elements and the locking rod 210a may also be changed adaptively. For example, if the driving part 210 is a motor, a worm gear mechanism or a rack and pinion mechanism may be disposed between the rotating shaft of the motor and the locking rod 210a for converting the rotational displacement output by the motor into the linear displacement required by the locking rod 210 a; if the driving member 210 is a driving element capable of directly generating linear displacement, such as a cylinder, etc., the locking rod 210a may be directly connected to the piston rod of the driving element, or the locking rod 210a itself may be the piston rod of the driving element.

Referring to fig. 4, the side valve body 2 may include a valve seat 2a and a valve cover 2b, the valve seat 2a may be abutted with the main valve body 1 to enclose a main movable space of a portion where the valve core portion 211 is engaged with the valve port 12, one end of the valve sleeve 24 close to the main valve body 1 may be provided with a mounting disk portion 241, the valve sleeve 24 may be connected with the valve seat 2a through the mounting disk portion 241, a portion where the valve core portion 211 is connected with the valve stem portion 212 may be located in the valve sleeve 24, and the valve cover 2b may be covered outside the valve sleeve 24 to shield the locking member 22, the thermal valve member 23, the valve sleeve 24, the lock seat 25, the transmission mechanism 26, the control module 27, the battery module 28, the driving member 210, and the like.

The valve cover 2b can be of a split structure and specifically comprises a cover part 2b-1 and a cover part 2b-2 so as to be convenient to mount, the cover part 2b-1 can shield the periphery, the cover part 2b-2 can shield the axial direction, and the cover part 2b-1 and the cover part 2b-2 can be fixedly connected by adopting welding, threaded connection and other modes; the cover part 2b-1 can also be provided with an outlet hole 2 b-11.

Further, can also include the auxiliary valve body 5, the auxiliary valve body 5 can be followed the axial butt joint with the main valve body 1, and specific connected mode can be flange joint, can install back-fire relief part 51 between the two, can block the inside tempering of gas pipeline, the expansion of the intensity of a fire when can effectively preventing the inside of gas pipeline from catching fire.

Fire-retardant part 51 specifically can be for hindering the fire net, and along the direction of keeping away from fire-retardant part 51, the inside passage of vice valve body can the convergent setting to guarantee the unanimity of the whole flux of gas pipeline.

Further, the gas switching valve may further include a valve state sensor, which may be specifically a hall sensor or the like, for detecting the state of the valve port 12, and a display device, which may be specifically a component having a display screen, which may be in signal connection with the valve state sensor, and may display the state of the valve port 12 detected by the valve state sensor, so as to obtain the state of the gas switching valve.

The display device may be directly disposed on the main valve body 1, the side valve body 2, or the sub-valve body 5, or may be a remote component, such as a control center. In fact, the display device can display the states of opening and closing the valve, and can also display the temperature measured by the temperature sensor 4, the gas flow inside the gas channel 11 and other relevant information, and only the signal transmission relation between the display device and the relevant detection components needs to be established.

An operating switch is further disposed on the outer side 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 in signal connection with the aforementioned electromagnetic component, and further close the valve port 12 through the electromagnetic component.

The operating switch can be integrated with the display device, which in fact enables remote closing of the gas switching valve when the display device is a remote component. The display device may have a touch screen, and thus, the operation switches may also be virtual keys provided on the touch screen.

As can be seen from the above description, the gas switch valve provided by the present invention integrates multiple functions, such as a manual switch valve function, an automatic valve closing function of the thermal actuator 23 under a set temperature condition, an automatic valve closing function of the electromagnetic actuator according to a temperature condition or an earthquake condition, a valve locking function of the driving element 210, a fire stopping function of the fire stopping element 51, and a remote valve closing function, so that the gas switch valve has a stronger anti-interference performance and is safer to use.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (27)

1. A gas switch valve comprises a main valve body (1) and a valve core assembly (21), a gas channel (11) is arranged in the main valve body (1), the gas channel (11) is provided with a valve port (12), the valve core assembly (21) is driven to close or open the valve port (12) so as to close or conduct the gas channel (11), characterized in that the device also comprises a first elastic component (212b) and a locking component (22), the first elastic part (212b) is acted with the valve core assembly (21), the valve core component (21) is also provided with a hole-type or groove-type locking matching part (212c), when the valve port (12) is in an open state, the first elastic component (212b) is in an energy storage state, the locking component (22) is inserted into the locking matching part (212c) to limit the axial displacement of the valve core assembly (21);

the valve core assembly further comprises a thermal dynamic component (23), the thermal dynamic component (23) is in transmission connection with the locking component (22), the thermal dynamic component (23) can drive the locking component (22) to be separated from the locking matching part (212c) under a set temperature condition, and the first elastic component (212b) can drive the valve core assembly (21) to close the valve port (12).

2. The gas switching valve according to claim 1, further comprising a side valve body (2), wherein the side valve body (2) is located at one side of the main valve body (1) in the radial direction and is connected to the main valve body (1), a valve sleeve (24) is arranged in the side valve body (2), the valve core assembly (21) is slidably connected to the valve sleeve (24), and the locking member (22) is mounted to the valve sleeve (24).

3. The gas switching valve according to claim 2, wherein the valve core assembly (21) comprises a valve core portion (211) and a valve stem portion (212) which are connected, the valve core portion (211) is matched with the valve port (12) for closing or opening the valve port (12), the valve stem portion (212) is slidably connected with 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, wherein the first elastic member (212b) is a spring fitted around the valve stem portion (212), and one end of the spring is engaged with the valve stem portion (212) and the other end thereof is engaged with the valve housing (24).

5. The gas switching valve according to claim 3, wherein an end of the valve stem portion (212) remote from the valve core portion (211) protrudes from the side valve body (2) to form a manual operation portion (212 a).

6. The gas switching valve according to claim 5, further comprising a valve cover (3), said valve cover (3) being mounted to said side valve body (2) for covering said manual operation portion (212 a); and/or the presence of a gas in the gas,

a handle (212a-1) is connected to the manual operation section (212 a).

7. The gas switching valve according to claim 3, wherein said lock engagement portion (212c) is an annular groove provided in an outer peripheral wall of said stem portion (212).

8. The gas switching valve according to claim 3, further comprising a lock housing (25), said lock housing (25) being mounted to said valve housing (24), said locking member (22) being mounted to said lock housing (25);

the valve further comprises a second elastic component (221), the second elastic component (221) interacts with 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 part (212c), the second elastic component (221) enables the locking component (22) to be inserted into the locking matching part (212 c).

9. Gas switching valve according to claim 3, characterized in that it further comprises a transmission (26), said thermal actuator (23) interacting with said locking member (22) through said transmission (26).

10. Gas switching valve according to claim 9, characterized in that said transmission mechanism (26) comprises a first oscillating arm (261) arranged in an articulated manner, said first oscillating arm (261) having a first and a second opposite end, said first end interacting with said locking member (22) and said second end interacting with said thermal valve member (23).

11. The gas switching valve according to claim 10, characterized in that said transmission mechanism (26) further comprises a mounting bracket (262), said mounting bracket (262) being provided with an axially movable driving rod (262a), said driving rod (262a) being articulated with said second end of said first oscillating arm (261), said thermal actuator (23) interacting with said driving rod (262 a).

12. The gas switching valve according to claim 11, characterized in that said thermal element (23) is a piece of memory alloy which interacts with said driving rod (262a) and is deformable in said set temperature condition to drive the axial displacement of said driving rod (262 a).

13. The gas switching valve according to claim 12, wherein said memory alloy member is a memory spring which is externally fitted to said driving rod (262a) and has one end portion which is engaged with said mounting frame (262) and the other end portion which is engaged with said driving rod (262 a).

14. Gas switching valve according to claim 11, characterized in that it also comprises an electromagnetic member also interacting with said driving rod (262a), said electromagnetic member also being able to actuate the axial displacement of said driving rod (262 a).

15. The gas switching valve according to claim 14, further comprising a temperature sensor (4) and a control module (27), wherein the control module (27) is in signal connection with the temperature sensor (4) and the electromagnetic component, the temperature sensor (4) is used for detecting an ambient temperature, and the control module (27) is used for controlling the electromagnetic component to open and close according to the ambient temperature detected by the temperature sensor (4).

16. The gas switch valve according to claim 14, further comprising a seismic sensor and a control module (27), wherein the control module (27) is in signal connection with the seismic sensor and the electromagnetic component, the seismic sensor is used for detecting the magnitude of an earthquake, and the control module (27) is used for controlling the electromagnetic component to open and close according to the magnitude measured by the seismic sensor.

17. Gas switching valve according to claim 14, characterized in that a battery module (28) is also provided in the side valve body (2) for supplying power to the electromagnetic components.

18. The gas switching valve according to claim 10, wherein said transmission mechanism (26) further comprises a second swing arm (263) hingedly arranged;

the valve body further comprises an elastic pressing part (29) at least partially extending out of the side valve body (2), the second swinging arm (263) is provided with a first end and a second end which are opposite, the first end is acted with the locking part (22), the second end is acted with the elastic pressing part (29), and the elastic pressing part (29) can drive the second swinging arm (263) to rotate so as to enable the locking part (22) to be separated from the locking matching part (212 c).

19. The gas switching valve according to claim 18, wherein the elastic pressing member (29) comprises a pressing cap (291) and a third elastic member (292), the pressing cap (291) is sleeved on the valve stem portion (212), and the third elastic member (292) interacts with the pressing cap (291).

20. The gas switching valve according to claim 3, further comprising a driving member (210), wherein the driving member (210) is provided with a locking rod (210a) capable of acting in the axial direction, and the driving member (210) is capable of driving the locking rod (210a) to act with the valve core assembly (21) so as to limit the axial displacement of the valve core assembly (21) when the valve port (12) is in the closed state.

21. Gas switching valve according to claim 20, characterized in that said driving means (210) are electromagnetic driving means, externally powered or powered by means of a battery module (28) arranged inside said gas switching valve.

22. The gas switching valve according to claim 3, wherein the side valve body (2) comprises a valve seat (2a) and a valve housing (2b), the valve seat (2a) is abutted against the main valve body (1), the end of the valve housing (24) close to the main valve body (1) is provided with a mounting disc portion (241), the valve housing (24) is connected with the valve seat (2a) by the mounting disc portion (241), and the valve housing (2b) is covered outside the valve housing (24).

23. Gas switching valve according to any one of claims 1 to 22, further comprising an auxiliary valve body (5), the auxiliary valve body (5) being axially abutted to the main valve body (1) with a flame arresting member (51) mounted therebetween.

24. The gas switching valve according to claim 23, wherein the flame retardant member (51) is a flame retardant mesh; and/or the presence of a gas in the gas,

the inner passage of the auxiliary valve body (5) is tapered in a direction away from the flame retardant member (51).

25. The gas switching valve according to any one of claims 1 to 22, further comprising a valve state sensor for detecting the state of the valve port (12), and a display device in signal connection with the valve state sensor and capable of displaying the state of the valve port (12) detected by the valve state sensor.

26. The gas switch valve according to claim 25, characterized in that the main valve body (1) is further provided with an operation switch on the outer side, and the operation switch can control the valve core assembly (21) to close the valve port (12).

27. The gas switching valve according to claim 25, wherein said operation switch is integrally provided with said display means.

Images