CN219755216U

CN219755216U - Gas fire extinguishing signal feedback device

Info

Publication number: CN219755216U
Application number: CN202320653911.9U
Authority: CN
Inventors: 戴钦; 况青
Original assignee: Anhui Yiling Rongye Technology Co ltd
Current assignee: Anhui Yiling Rongye Technology Co ltd
Priority date: 2023-03-29
Filing date: 2023-03-29
Publication date: 2023-09-26
Anticipated expiration: 2033-03-29

Abstract

The utility model relates to a gas fire-extinguishing signal feedback device, which comprises a shell, wherein a first cavity, a second cavity and a third cavity which are not communicated with each other are formed in the shell, an air inlet communicated with the third cavity is formed in the side wall of the shell, and a piston rod penetrates through the second cavity and is inserted into the first cavity; the damping device comprises a first chamber, a second chamber, a damping plate, a piston rod, a damping liquid and a plurality of groups of flow holes, wherein the damping plate is connected to the second chamber in a sliding manner, the damping liquid is injected into the second chamber, and the side walls of the damping plate are uniformly provided with the plurality of groups of flow holes. According to the utility model, the damping plate and the flow holes are arranged, and damping force is injected into the second chamber, so that the stroke speed of the piston head and the piston rod can be reduced, the stroke kinetic energy is reduced, the micro switch is protected once, and the pressure relief opening is arranged, so that the pressure relief can be carried out after the micro switch is started, and the piston head is prevented from continuously and uninterruptedly pressing the micro switch.

Description

Gas fire extinguishing signal feedback device

Technical Field

The utility model belongs to the technical field of fire control, and particularly relates to a gas fire extinguishing signal feedback device.

Background

The gas fire extinguishing refers to a fire extinguishing system for extinguishing flame by using a fire extinguishing agent in a gas state, and the gas fire extinguishing is often connected with a signal feedback device, and is usually composed of a valve body, a piston, a micro switch, a self-locking device and the like, when the fire extinguishing agent is released, the pressure pushes the inner piston to switch on the micro switch, so that signal feedback is formed, but the instantaneous pressure on the tail end of the piston is overlarge, and the kinetic energy generated by the inner piston is overlarge to damage the micro switch.

Therefore, we propose a gas fire extinguishing signal feedback device for solving the above problems.

Disclosure of Invention

Aiming at the problem that the piston with excessive kinetic energy can crash the inching quick switch in the prior art, the utility model provides the following technical scheme:

the gas fire extinguishing signal feedback device comprises a shell, wherein a first cavity, a second cavity and a third cavity which are not communicated with each other are formed in the shell, an air inlet communicated with the third cavity is formed in the side wall of the shell, a micro switch is arranged in the first cavity, a piston head is connected in the third cavity in a sliding manner, one end, far away from the air inlet, of the piston head is connected with a piston rod, and the piston rod penetrates through the second cavity and is inserted into the first cavity;

the damping device comprises a first chamber, a second chamber, a damping plate, a piston rod, a damping liquid and a plurality of groups of flow holes, wherein the damping plate is connected to the second chamber in a sliding manner, the damping liquid is injected into the second chamber, and the side walls of the damping plate are uniformly provided with the plurality of groups of flow holes.

Through the technical scheme, when the damping plate moves in the second chamber, damping force generated by flowing damping liquid along the flow holes can reduce the stroke speed of the piston head, so that the kinetic energy of the piston head and the piston rod is reduced, and the effect of protecting the micro switch is achieved.

As a further technical scheme of the utility model, a spring is connected between the damping plate and the inner wall of the second chamber, and the spring is wound on the outer wall of the piston rod.

Through the technical scheme, the elastic force generated after the spring is extruded can enable the piston head to be always attached to the inner wall of the shell on one side of the air inlet when the piston head is not subjected to external force, so that multiple feedback is completed.

As a further technical scheme of the utility model, one end of the piston rod, which is away from the piston head, is connected with a buffer sheet, and the buffer sheet is in an arc-shaped design.

Through the technical scheme, the buffer sheet can form a buffer layer between the micro switch and the piston rod, so that instantaneous kinetic energy impact is further reduced.

As a further technical scheme of the utility model, the side wall of the shell is provided with a pressure relief opening, and the pressure relief opening is communicated with the third chamber.

Through the technical scheme, the moving interval of the piston head can be limited, the piston head is prevented from applying pressure to the micro switch along with continuous gas pressure, and the service life of the micro switch is protected.

The beneficial effects of the utility model are as follows:

through being provided with damping plate and discharge orifice to pour into damping force in the inside of second cavity, can reduce the stroke speed of piston head and piston rod, thereby reduce stroke kinetic energy, carry out primary protection to micro-gap switch, be provided with the pressure release mouth simultaneously, can carry out the pressure release after micro-gap switch starts, avoid the piston head to produce continuous incessant pressure to micro-gap switch.

Drawings

FIG. 1 is a schematic view showing a cross-sectional structure in front view in the embodiment;

FIG. 2 is a schematic diagram illustrating the state structure of FIG. 1 in an embodiment;

fig. 3 is a schematic diagram showing a left side view of the damper plate in the embodiment.

Legend description:

100. a housing; 110. a first chamber; 111. a micro-switch; 120. a second chamber; 121. a damping plate; 122. a flow hole; 123. a spring; 130. a third chamber; 131. a piston head; 132. a piston rod; 133. a buffer sheet; 134. a pressure relief port; 140. an air inlet.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments.

As shown in fig. 1, fig. 2 and fig. 3, a gas fire extinguishing signal feedback device comprises a housing 100, a first chamber 110, a second chamber 120 and a third chamber 130 which are not communicated with each other are formed in the housing 100, an air inlet 140 communicated with the third chamber 130 is formed in the side wall of the housing 100, a micro switch 111 is arranged in the first chamber 110, a piston head 131 is slidably connected in the third chamber 130, the inner space of the third chamber 130 is divided into an air inlet cavity and a compression cavity by the piston head 131, the air inlet cavity is communicated with the air inlet 140, a piston rod 132 is connected to one end, far away from the air inlet 140, of the piston head 131, the piston rod 132 penetrates through the second chamber 120 and is inserted into the first chamber 110, a damping plate 121 is slidably connected in the second chamber 120, damping liquid is injected into the second chamber 120, and a plurality of groups of flow holes 122 are uniformly formed in the side wall of the damping plate 121.

In a specific operation, gas enters the third chamber 130 from the gas inlet 140 to push the piston head 131 and the piston rod 132 to move towards the micro switch 111, at this time, the gas inlet cavity is increased, the compression cavity is reduced, the damping plate 121 moves synchronously in the second chamber 120 along with the movement of the piston rod 132, so that relative movement is generated between the damping plate 121 and damping liquid, the damping liquid flows along the flow hole 122 to generate damping force, viscous resistance reduces the movement speed of the piston rod 132, the kinetic energy of the piston rod 132 to the right is attenuated under the condition of unchanged mass, the impact strength of the piston rod 132 on the micro switch 111 is reduced, and the micro switch 111 is protected.

In some embodiments, the damping fluid may be glycerol or silicone oil.

A spring 123 is connected between the damping plate 121 and the inner wall of the second chamber 120, and the spring 123 is wound around the outer wall of the piston rod 132.

In a specific operation, when the damping plate 121 moves along with the beginning of the stroke, the spring 123 is compressed to deform, and when the intake pressure of the intake port 140 is weakened, the piston head 131 can be returned by the elastic action of the spring 123, so as to realize multiple feedback.

One end of the piston rod 132, which is away from the piston head 131, is connected with a buffer piece 133, and the buffer piece 133 is arc-shaped.

In some embodiments, the buffer sheet 133 is a metal or plastic having elasticity.

In a specific operation, the buffer sheet 133 contacts with the micro switch 111 before the piston rod 132, and as the intake pressure of the intake port 140 continuously enters, a buffer can be formed between the piston rod 132 and the micro switch 111, thereby forming a secondary protection for the micro switch 111.

The side wall of the housing 100 is provided with a pressure relief opening 134, and the pressure relief opening 134 is communicated with the third chamber 130.

In a specific operation, as the piston head 131 moves inside the third chamber 130, the pressure relief opening 134 is communicated with the compression chamber at the beginning, so that the air extruded in the compression chamber can be discharged, and as the piston head 131 continuously moves, when the piston head 131 blocks the pressure relief opening 134, the buffer sheet 133 is in primary contact with the micro switch 111, the air in the compression chamber cannot be discharged, as the piston head 131 continuously moves and is compressed, resistance is formed on the movement of the piston head 131, and as the buffer sheet 133 is gradually compressed, the pressure relief opening 134 is communicated with the air inlet chamber, so that the pressure on one side of the air inlet chamber can be relieved, and the continuous pressure of the piston head 131 to the micro switch 111 is avoided.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting.

Claims

1. The gas fire extinguishing signal feedback device comprises a shell (100), wherein a first chamber (110), a second chamber (120) and a third chamber (130) which are not communicated with each other are arranged in the shell (100), an air inlet (140) communicated with the third chamber (130) is arranged on the side wall of the shell (100), a micro switch (111) is arranged in the first chamber (110), and the gas extinguishing signal feedback device is characterized in that,

the third chamber (130) is internally and slidably connected with a piston head (131), one end, far away from the air inlet (140), of the piston head (131) is connected with a piston rod (132), and the piston rod (132) penetrates through the second chamber (120) and is inserted into the first chamber (110);

the damping device is characterized in that a damping plate (121) is slidably connected inside the second chamber (120), the damping plate (121) is connected to a piston rod (132), damping liquid is injected into the second chamber (120), and a plurality of groups of flow holes (122) are uniformly formed in the side wall of the damping plate (121).

2. A gas fire suppression signal feedback device in accordance with claim 1, wherein: a spring (123) is connected between the damping plate (121) and the inner wall of the second chamber (120), and the spring (123) is wound on the outer wall of the piston rod (132).

3. A gas fire suppression signal feedback device in accordance with claim 2, wherein: one end of the piston rod (132) deviating from the piston head (131) is connected with a buffer sheet (133), and the buffer sheet (133) is in an arc-shaped design.

4. A gas fire suppression signal feedback device in accordance with claim 2, wherein: the side wall of the shell (100) is provided with a pressure relief opening (134), and the pressure relief opening (134) is communicated with the third chamber (130).