Straight-through selector valve started through electromagnet
By building a starting pipeline into the selector valve and adopting a direct-acting electromagnet starter, the problems of complex structure and sealing surface wear of the existing selector valve are solved, and compact and stable fire extinguishing system control is achieved.
Patent Information
- Application Number
- CN202423069241.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-12-12
AI Technical Summary
The selector valve of the existing pipe network type gas fire extinguishing system has a complex structure, requires an additional starter bottle and lacks independent control of the solenoid valve, resulting in a non-compact structure and severe wear of the sealing surface.
The straight-through selector valve activated by the electromagnet has a built-in start line in the pilot valve, combined with a direct-acting structure and a signal feedback device interface to achieve independent control of the solenoid valve, reduce the need for additional start bottles, shorten the structure size and reduce sealing surface wear.
The compact and reasonable structure of the selector valve is achieved, the service life and operation stability are improved, and the function of connecting multiple gas fire extinguishing system components is enhanced.
Smart Images
Figure CN223318444U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fire-fighting accessories, in particular to a straight-through selection valve activated by an electromagnet. Background Art
[0002] In the combined distribution system of a pipe network gas fire extinguishing system, the selector valve plays a key role. It can control the flow of fire extinguishing agent to a specific protection zone, ensuring that when a fire occurs, the fire extinguishing agent is only delivered to the burning protection zone, achieving precise fire extinguishing and avoiding the waste of fire extinguishing agent in unburned areas. The principle of a conventional selector valve is as follows:
[0003] In the quasi-operating state, the circular plunger inside the valve, under the action of the fixing mechanism and the locking mechanism, tightly blocks the inlet of the fire extinguishing agent, preventing leakage of the fire extinguishing agent. When a fire occurs, priming gas enters through the priming line, pushing the internal push rod and handle to move, causing the locking mechanism to open. Subsequently, when the fire extinguishing agent reaches a certain pressure, the circular plunger can be pushed open, allowing the fire extinguishing agent to enter through the inlet, pass through the selector valve, and be discharged from the outlet to the corresponding fire protection zone. However, existing structures do not use solenoid valves for independent control, and generally require a priming bottle to specifically activate the selector valve, resulting in a relatively complex structure. Utility Model Content
[0004] In view of the problems existing in the prior art, the utility model provides a straight-through selector valve activated by an electromagnet, which has a compact and reasonable overall structure, stable and reliable operation, and extends the service life of the selector valve.
[0005] The utility model adopts the following technical solution: a straight-through selection valve activated by an electromagnet, comprising a valve body and a valve core, characterized in that an air outlet pressure cap and an air inlet pressure cap are symmetrically arranged at both ends of the valve body, a pilot valve is arranged on the valve body, and the pilot valve is driven by an electromagnetic drive device. When the valve core in the pilot valve is in a closed state, the valve core presses against the sealing surface on the air outlet pressure cap by spring force, and when the valve core is in an open state, pressurized gas flows out from the air outlet pressure cap through the opened valve core.
[0006] Preferably, the valve core is a direct-acting connection structure in the valve body.
[0007] Preferably, a starting cavity is provided in the valve core, and the starting cavity is connected to a built-in starting pipe.
[0008] Preferably, a spring is provided at the end of the valve core away from the pressure cap of the air outlet.
[0009] Preferably, a sealing ring is provided between the valve core and the valve body.
[0010] Preferably, a signal feedback device interface is provided on the valve body adjacent to the air outlet pressure cap.
[0011] The beneficial effects of the utility model are as follows:
[0012] 1. Through the setting of the pilot valve, the starting pipeline is built-in, eliminating the need for an additional starting bottle to specifically start the selection valve.
[0013] 2. Realize the independent control of the solenoid valve, adjust the electromagnet of the original drive bottle group to the selection valve; adopt the direct-acting structure to reduce the wear on the sealing surface and increase the number of cycles of the valve core.
[0014] 3. The use of air inlet pressure cap and air outlet pressure cap effectively shortens the structural size and makes the structure more reasonable and compact.
[0015] 4. By setting a signal feedback device interface at the outlet, the components that should be on the outlet pipe assembly are adjusted to the selector valve, making the selector valve more comprehensive and capable of connecting to multiple gas fire extinguishing system components. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural diagram of the present utility model.
[0017] Figure 2 for Figure 1 Schematic diagram of the structure of AA.
[0018] In the figure: 1. Valve body 2. Outlet pressure cap 3. Inlet pressure cap 4. Sealing ring 5. Valve core 6. Pilot valve 7. Electromagnetic drive device 8. Signal feedback device interface 9. Spring. DETAILED DESCRIPTION
[0019] The present invention will be further described below with reference to specific embodiments.
[0020] like Figure 1 The illustrated embodiment of a straight-through selector valve activated by an electromagnet comprises a valve body 1 and a valve core 5. The valve core is disposed in the center of the valve body, with an outlet pressure cap 2 and an inlet pressure cap 3 symmetrically disposed at either end of the valve body 1. A pilot valve 6 is disposed on the valve body 1 and driven by an electromagnetic drive device 7. When the valve core within the pilot valve 6 is in the closed state, the valve core presses against the sealing surface of the outlet pressure cap 2 by spring force. When the valve core is in the open state, pressurized gas flows out of the outlet pressure cap 2 through the opened valve core 5. A starting chamber is provided within the valve core, which is connected to a built-in starting pipeline. After pressurized gas is introduced from the inlet pressure cap, the spring force is overcome, causing the valve core to move toward the end away from the outlet pressure cap 2, opening the sealing surface of the outlet pressure cap 2. The pressurized gas is then transported through the delivery pipe to the protected area requiring fire extinguishing.
[0021] Specifically, the valve core is a direct-acting connection structure in the valve body 1. This structure can reduce movement friction and extend service life.
[0022] Specifically, a spring 9 is provided at one end of the valve core 5. The spring is provided at one end of the air inlet pressure cap, and the valve core is pressed against the air outlet pressure cap to achieve sealing under normal conditions through the spring force.
[0023] Specifically, a sealing ring 4 is provided between the valve core 5 and the valve body 1. The sealing ring is provided to ensure internal sealing.
[0024] In one embodiment, a signal feedback device interface 8 is provided on the valve body 1 adjacent to the air outlet pressure cap 2. The linkage control system reminds the gas extinguishing system that it is spraying.
[0025] This selector valve is activated by a solenoid valve. Fire extinguishing gas in the air inlet pipe is driven through an internal pneumatic line to move a direct-acting valve core, ultimately opening the pipeline in the corresponding protection zone. This compact, direct-acting structure also features a pre-defined interface for signal feedback.
[0026] The working principle of this utility model is as follows:
[0027] 1. When the selector valve is closed, the valve core is pressed against the sealing surface of the outlet pressure cap by the spring force. The electromagnet does not operate without power, and the valve core in the pilot valve is in a closed state. There is no pressurized gas in the starting chamber of the valve core.
[0028] 2. When the gas fire extinguisher is activated, pressurized gas is delivered to the air inlet cap. At this point, the solenoid valve is energized, the solenoid valve ejector pin pops out, pushing the valve core. Pressurized gas enters the starting chamber through the built-in starting pipe, overcoming the spring force. The valve core then moves to the right, opening. The pressurized gas flows through the open valve core and out of the air outlet cap. It is then delivered through the delivery pipe to the protected area requiring fire extinguishing. Simultaneously, the signal feedback device interface at the outlet cap directs the gas to the signal feedback device, which in turn alerts the control system that the gas extinguishing system is discharging.
[0029] 3. When the gas fire extinguishing release is completed, the gas in the valve core starting chamber decreases as the inlet pressure decreases, and the spring pushes the valve core to move to the left, closing the valve and the release ends.
[0030] The utility model uses the setting of the pilot valve to build the starting pipeline into the form, reducing the need for additional starting bottles to start the selection valve. It realizes the separate control of the solenoid valve and adjusts the electromagnet of the original drive bottle group to the selection valve. The direct-acting structure is adopted to reduce the wear on the sealing surface and increase the number of cyclic actions of the valve core. The structure of the air inlet pressure cap and the air outlet pressure cap can effectively shorten the structural size and make the structure more reasonable and compact. By setting the signal feedback device interface at the outlet, the component that should be on the outlet pipe assembly is adjusted to the selection valve, making the selection valve more comprehensive and capable of connecting to multiple gas fire extinguishing system components.
[0031] It should be understood that these embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the contents of the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of this application.
Claims
1. A straight-through selector valve activated by an electromagnet, comprising a valve body (1) and a valve core (5), characterized in that An outlet pressure cap (2) and an inlet pressure cap (3) are symmetrically arranged at both ends of the valve body (1). A pilot valve (6) is arranged on the valve body (1). The pilot valve (6) is driven by an electromagnetic drive device (7). When the valve core in the pilot valve (6) is in a closed state, the valve core presses against the sealing surface on the outlet pressure cap (2) through the force of a spring. When the valve core is in an open state, pressurized gas flows out of the outlet pressure cap (2) through the opened inlet pressure cap (3) and the valve core (5).
2. A straight-through selector valve activated by an electromagnet according to claim 1, characterized in that The valve core is a direct-acting connection structure in the valve body (1).
3. A straight-through selector valve activated by an electromagnet according to claim 2, characterized in that A starting cavity is provided in the valve core, and the starting cavity is connected to a built-in starting pipeline.
4. A straight-through selector valve activated by an electromagnet according to claim 3, characterized in that The valve core (5) is provided with a spring (9) at one end away from the air outlet pressure cap (2).
5. A straight-through selector valve activated by an electromagnet according to claim 4, characterized in that A sealing ring (4) is provided between the valve core (5) and the valve body (1).
6. A straight-through selector valve activated by an electromagnet according to claim 5, characterized in that A signal feedback device interface (8) is provided on the valve body (1) adjacent to the air outlet pressure cap (2).