Connecting structure and mistaken-spraying-preventing fire extinguishing system

Abstract

The utility model belongs to the technical field of fire-fighting instruments, and aims to provide a connecting structure and an anti-mistaken-spraying fire extinguishing system. Wherein the connecting structure comprises a spray head and a connector; the nozzle is provided with an interface ring, the interface ring comprises a first metal contact piece and a second metal contact piece which are insulated from each other, and the first metal contact piece and the second metal contact piece are respectively connected with a positive electrode and a negative electrode of an electromagnetic valve control loop in the fixed fire extinguishing medium supply device; the connector comprises a conductive metal barrel, and the conductive metal barrel is in contact with the first metal contact piece and the second metal contact piece at the same time when connected with the spray head, so that the electromagnetic valve control loop is closed, and the fixed fire extinguishing medium supply device is in a spraying state; the mistaken-spraying-preventing fire extinguishing system comprises a fixed fire extinguishing medium supply device, a fire extinguishing robot and a connecting structure. The device can prevent the fire extinguishing medium from being sprayed by mistake, and is favorable for improving the safety and reliability of a fire extinguishing system.

Description

Technical Field

[0001] This utility model belongs to the field of fire-fighting equipment technology, specifically relating to a connection structure and a fire extinguishing system to prevent accidental spraying. Background Technology

[0002] Existing fire extinguishing systems typically consist of a fixed fire extinguishing medium supply device (such as an aqueous film-forming foam fire extinguishing system) and electrically controlled fire extinguishing actuators such as solenoid valves. The solenoid valves control the opening and closing of the fire extinguishing medium pipelines of the fixed fire extinguishing medium supply device to control the release of fire extinguishing media such as water or foam. For example... Figure 1 The diagram shows a schematic of an existing solenoid valve control circuit. When the first control module determines that fire extinguishing is required, it drives the first power control switch Q1 to close, so that the first power module B1 supplies power to the first solenoid valve K1. The first solenoid valve K1 opens, and the fire extinguishing medium is sprayed out through the pipeline.

[0003] With the development of fire protection automation technology, firefighting robots are gradually playing an important role in industrial sites and high-risk areas. In some scenarios where mobile firefighting robots are required, they often need to connect to the fire extinguishing medium pipelines of existing fixed fire extinguishing medium supply devices on site to access the fire extinguishing medium and perform firefighting operations.

[0004] However, in using the prior art, the inventors discovered at least the following problems:

[0005] While existing technologies using solenoid valves for pipeline opening and closing control are simple in structure and easy to implement, they rely on electrical control signals for actuation. This makes the solenoid valves susceptible to malfunctions due to circuit errors or software failures, which could lead to accidental energization. If the system misjudges or malfunctions and triggers the solenoid valve to energize, it could cause the extinguishing agent to be sprayed prematurely, wasting extinguishing resources and potentially affecting on-site equipment or personnel. Furthermore, existing technologies typically lack a reliable physical-level safety linkage mechanism between fire-fighting robots and fixed fire-fighting devices, leaving the safety hazard of premature extinguishing agent spraying due to control system malfunctions before the fire-fighting robot is properly connected. Utility Model Content

[0006] In order to at least partially solve the above-mentioned technical problems, this utility model provides a connection structure and a fire extinguishing system to prevent accidental spraying.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] In a first aspect, this utility model discloses a connection structure, including a nozzle and a connector; the nozzle is provided with an interface ring, the interface ring including a first metal contact and a second metal contact that are insulated from each other, the first metal contact and the second metal contact being respectively connected to the positive and negative terminals of the solenoid valve control circuit in a fixed fire extinguishing medium supply device;

[0009] The connector includes a conductive metal cylinder. When the conductive metal cylinder is engaged with the nozzle, it simultaneously contacts and connects the first metal contact and the second metal contact, thereby closing the solenoid valve control circuit and putting the fixed fire extinguishing medium supply device into a sprayable state.

[0010] In one possible design, the interface ring includes an annular body with a first protrusion and a second protrusion arranged around it, which are isolated from each other. The first metal contact is disposed on the first protrusion, and the second metal contact is disposed on the second protrusion.

[0011] In one possible design, a notch is provided on the annular body between the first protrusion and the second protrusion, the notch being used to isolate the first protrusion and the second protrusion.

[0012] In one possible design, both the first protrusion and the second protrusion are configured as semi-circular.

[0013] In one possible design, the annular body is made of rubber.

[0014] In one possible design, when the conductive metal cylinder is engaged with the nozzle, the conductive metal cylinder is sleeved outside the nozzle, and the conductive metal cylinder is in contact with the first metal contact and the second metal contact.

[0015] Secondly, this utility model discloses a fire extinguishing system to prevent accidental spraying, including a fixed fire extinguishing medium supply device and a fire extinguishing robot, and also includes a connection structure as described in any of the above, wherein the nozzle of the connection structure is disposed at the outlet end of the fire extinguishing medium output pipe in the fixed fire extinguishing medium supply device, and the connector of the connection structure is disposed at the inlet end of the fire extinguishing medium inlet pipe in the fire extinguishing robot.

[0016] In one possible design, the solenoid valve control circuit includes a second control module, a second power control switch, a second solenoid valve, and a second power module. One pole of the second power module is connected to one end of the second power control switch, and the other end of the second power control switch is connected to the first metal contact. The other pole of the second power module is connected to the second metal contact through the second solenoid valve, and the controlled end of the second power control switch is connected to the second control module.

[0017] In one possible design, the fixed fire extinguishing medium supply device is an aqueous film-forming foam fire extinguishing device.

[0018] The beneficial effects of this utility model are mainly reflected in its ability to prevent the accidental spraying of extinguishing agents, which helps to improve the safety and reliability of the fire extinguishing system. Specifically, in the implementation of this utility model, the nozzle of the connecting structure is located at the outlet end of the fire extinguishing medium output pipe in the fixed fire extinguishing medium supply device, and the connector of the connecting structure is located at the inlet end of the fire extinguishing medium inlet pipe in the fire extinguishing robot. Since the first metal contact and the second metal contact are respectively connected to the positive and negative terminals of the solenoid valve control circuit in the fixed fire extinguishing medium supply device, current can be conducted through the interface ring. When the fixed fire extinguishing medium supply device is not connected to the fire extinguishing robot, the two contacts of the first metal contact and the second metal contact are physically disconnected, effectively blocking the solenoid valve control circuit. Even if the control system malfunctions, it will not be energized, preventing the fire extinguishing medium from being accidentally sprayed from the fire extinguishing medium output pipe of the fixed fire extinguishing medium supply device. After the fixed fire extinguishing medium supply device is not connected to the fire extinguishing robot, the solenoid valve control circuit forms a closed loop, ensuring that the fixed fire extinguishing medium supply device can only spray the fire extinguishing medium when the robot is in position, effectively preventing the fire extinguishing medium from being accidentally sprayed due to control errors or accidental triggering, thereby enhancing the operational safety and reliability of the fire extinguishing system. Attached Figure Description

[0019] Figure 1 This is a circuit diagram of a solenoid valve control loop in the prior art;

[0020] Figure 2 This is a schematic diagram of the connection between a fixed fire extinguishing medium supply device and a nozzle;

[0021] Figure 3 This is a schematic diagram of the structure of a fixed fire extinguishing medium supply device, where the nozzle is connected to a conductive metal cylinder;

[0022] Figure 4 This is a top view of the interface ring;

[0023] Figure 5 This is the circuit diagram of the interface ring and the solenoid valve control loop. Detailed Implementation

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model.

[0025] It should be understood that although the terms first, second, etc., may be used herein to describe various units, these units should not be limited by these terms. These terms are only used to distinguish one unit from another. For example, the first unit may be referred to as the second unit, and similarly, the second unit may be referred to as the first unit, without departing from the scope of the exemplary embodiments of this utility model.

[0026] It should be understood that when a unit is referred to as "connected", "linked" or "coupled" to another unit in this document, it can be directly connected or coupled to another unit, or an intermediate unit may exist.

[0027] Example 1:

[0028] This embodiment provides a connection structure, such as Figure 2 and Figure 3 As shown, it includes a nozzle 1 and a connector; the nozzle 1 is provided with an interface ring 2, the interface ring 2 includes a first metal contact 21 and a second metal contact 22 that are insulated from each other, the first metal contact 21 and the second metal contact 22 are respectively connected to the positive and negative terminals of the solenoid valve control circuit in the fixed fire extinguishing medium supply device 4;

[0029] The connector includes a conductive metal cylinder 3. When the conductive metal cylinder 3 is engaged with the nozzle 1, it simultaneously contacts and connects the first metal contact 21 and the second metal contact 22, thereby closing the solenoid valve control circuit and putting the fixed fire extinguishing medium supply device 4 into a sprayable state.

[0030] This embodiment can prevent accidental spraying of extinguishing agents, which is beneficial to improving the safety and reliability of the fire extinguishing system. Specifically, in the implementation of this embodiment, the nozzle 1 of the connecting structure is located at the outlet end of the extinguishing agent output pipe 41 in the fixed extinguishing agent supply device 4, and the connector of the connecting structure is located at the inlet end of the extinguishing agent inlet pipe in the fire extinguishing robot. Since the first metal contact 21 and the second metal contact 22 are respectively connected to the positive and negative terminals of the solenoid valve control circuit in the fixed extinguishing agent supply device 4, current can be conducted through the interface ring 2. When the fixed extinguishing agent supply device 4 is not connected to the fire extinguishing robot, the first metal contact 21... The two contacts of the second metal contact 22 are physically disconnected, effectively blocking the solenoid valve control circuit. Even if the control system malfunctions, it will not be energized, preventing the fire extinguishing medium from being accidentally sprayed from the fire extinguishing medium output pipe 41 of the fixed fire extinguishing medium supply device 4. After the fixed fire extinguishing medium supply device 4 is not connected to the fire extinguishing robot, the solenoid valve control circuit forms a closed loop, ensuring that the fixed fire extinguishing medium supply device 4 can only spray the fire extinguishing medium when the robot is in place. This effectively prevents the fire extinguishing medium from being accidentally sprayed due to control errors or accidental triggering, thereby enhancing the operational safety and reliability of the fire extinguishing system.

[0031] Furthermore, in this embodiment, the nozzle 1 and the connector can be connected simultaneously after the fire extinguishing robot is in place, which helps to reduce the complexity of the electrical connection structure and improves ease of use and emergency response speed.

[0032] In this embodiment, the interface ring 2 includes an annular body 23, on which a first protrusion and a second protrusion, which are isolated from each other, are arranged around the annular body 23. The first metal contact 21 is disposed on the first protrusion, and the second metal contact 22 is disposed on the second protrusion. It should be noted that the annular body 23 serves to fix and connect to the connector 1 and to support and isolate the first metal contact 21 and the second metal contact 22.

[0033] In this embodiment, a notch 24 is provided on the annular body 23 between the first protrusion and the second protrusion. The notch 24 is used to isolate the first protrusion and the second protrusion. It should be understood that there are two notches 24 to correspond to the number of the first protrusion and the second protrusion. In this embodiment, the top view of the interface ring 2 is as follows. Figure 4As shown, the notch 24 can isolate the first protrusion and the second protrusion, thereby ensuring the tight isolation between the first metal contact 21 and the second metal contact 22. This avoids the problem of the solenoid valve control circuit forming a closed loop due to the conductivity of water, oil, dust and other impurities caused by the annular body 23 being immersed in water or contaminated by oil, dust and other impurities.

[0034] In this embodiment, both the first protrusion and the second protrusion are configured as semi-circular.

[0035] It should be noted that both the first protrusion and the second protrusion have a circumferential structure, which facilitates the contact of the conductive metal cylinder 3 and enables efficient insertion and removal.

[0036] In this embodiment, the annular body 23 is made of rubber, which isolates the first metal contact 21 from the second metal contact 22. It should be noted that the annular body 23 can also be made of other insulating materials. This embodiment uses hard rubber that can be fixed or detachably connected to the nozzle 1. It has good insulation properties and can resist harsh conditions such as thermal expansion and contraction and electric arc impact, which helps improve the durability and environmental adaptability of the interface ring 2. Based on this, the first metal contact 21 and the second metal contact 22 are physically isolated, preventing short circuits caused by control system malfunctions, enhancing the fire extinguishing system's protection against accidental spraying, and meeting the high standards required for fire safety applications.

[0037] In this embodiment, when the conductive metal cylinder 3 is engaged with the nozzle 1, the conductive metal cylinder 3 is sleeved outside the nozzle 1, and the conductive metal cylinder 3 is in contact with the first metal contact 21 and the second metal contact 22. It should be noted that the conductive metal cylinder 3 is connected to the nozzle 1 via a plug-in connection, which is convenient to operate and suitable for rapid deployment scenarios. It also ensures uniform docking position and stable contact, avoiding problems such as poor contact due to misalignment.

[0038] Example 2:

[0039] This embodiment provides a fire extinguishing system to prevent accidental spraying, including a fixed fire extinguishing medium supply device 4 and a fire extinguishing robot, and also includes a connection structure as described in any one of the embodiments, wherein, as Figure 2 and Figure 3 As shown, the nozzle 1 of the connecting structure is located at the outlet end of the fire extinguishing medium output pipe 41 in the fixed fire extinguishing medium supply device 4, and the connector of the connecting structure is located at the inlet end of the fire extinguishing medium inlet pipe in the fire extinguishing robot.

[0040] In this embodiment, based on the connection structure, the fire extinguishing system automatically blocks the spraying capability of the fire extinguishing medium when the fire extinguishing robot is not in place or connected, so that the fixed fire extinguishing medium supply device 4 and the fire extinguishing robot have a safe linkage mechanism, and the safety and reliability of the fire extinguishing system are higher.

[0041] In this embodiment, as Figure 4 As shown, the solenoid valve control circuit includes a second control module, a second power control switch Q2, a second solenoid valve K2, and a second power module B2. One terminal of the second power module B2 is connected to one end of the second power control switch Q2, and the other end of the second power control switch Q2 is connected to the first metal contact 21. The other terminal of the second power module B2 is connected to the second metal contact 22 through the second solenoid valve K2. The controlled terminal of the second power control switch Q2 is connected to the second control module. It should be noted that... Figure 5 The middle indicates Figure 2 and Figure 3 A top view of the interface ring 2 shows that the first metal contact 21 and the second metal contact 22 are respectively connected to the positive and negative terminals of the solenoid valve control circuit in the fixed fire extinguishing medium supply device 4. After the connector contacts the two terminals, the solenoid valve control circuit can be turned on. Subsequently, the fire extinguishing medium output pipeline 41 in the fixed fire extinguishing medium supply device 4 can be turned on or off according to the control of the second control module. That is, the fixed fire extinguishing medium supply device 4 can only output fire extinguishing medium after the fire extinguishing robot is in place, which is safer.

[0042] In this embodiment, the fixed fire extinguishing medium supply device 4 adopts an aqueous film-forming foam fire extinguishing device. It should be noted that this embodiment is for a fire extinguishing medium that is highly effective in suppressing reignition and has strong coverage, but other fire extinguishing medium products can also be applied, and there are no limitations here.

[0043] It should be noted that the working process, working details and technical effects of the fire extinguishing system for preventing accidental spraying provided in this embodiment 2 can be found in embodiment 1, and will not be repeated here.

[0044] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A connection structure, characterized in that: Includes a nozzle (1) and a connector; the nozzle (1) is provided with an interface ring (2), the interface ring (2) includes a first metal contact (21) and a second metal contact (22) that are insulated from each other, the first metal contact (21) and the second metal contact (22) are respectively connected to the positive and negative poles of the solenoid valve control circuit in the fixed fire extinguishing medium supply device (4); The connector includes a conductive metal cylinder (3). When the conductive metal cylinder (3) is engaged with the nozzle (1), it simultaneously contacts and conducts the first metal contact (21) and the second metal contact (22), thereby closing the solenoid valve control circuit and putting the fixed fire extinguishing medium supply device (4) into a sprayable state.

2. The connection structure according to claim 1, characterized in that: The interface ring (2) includes an annular body (23), on which a first protrusion and a second protrusion are arranged around each other, the first metal contact (21) is disposed on the first protrusion, and the second metal contact (22) is disposed on the second protrusion.

3. The connection structure according to claim 2, characterized in that: The annular body (23) has a notch (24) between the first protrusion and the second protrusion, the notch (24) being used to isolate the first protrusion and the second protrusion.

4. The connection structure according to claim 2, characterized in that: Both the first protrusion and the second protrusion are configured as semi-circular.

5. A connection structure according to claim 2, characterized in that: The annular body (23) is made of rubber.

6. The connection structure according to claim 1, characterized in that: When the conductive metal cylinder (3) is engaged with the nozzle (1), the conductive metal cylinder (3) is sleeved outside the nozzle (1), and the conductive metal cylinder (3) is in contact with the first metal contact (21) and the second metal contact (22).

7. A fire extinguishing system to prevent accidental spraying, characterized in that: The device includes a fixed fire extinguishing medium supply device (4) and a fire extinguishing robot, and also includes a connection structure as described in any one of claims 1 to 6, wherein the nozzle (1) of the connection structure is disposed at the outlet end of the fire extinguishing medium output pipe (41) in the fixed fire extinguishing medium supply device (4), and the connector of the connection structure is disposed at the inlet end of the fire extinguishing medium inlet pipe in the fire extinguishing robot.

8. A fire extinguishing system for preventing accidental spraying according to claim 7, characterized in that: The solenoid valve control circuit includes a second control module, a second power control switch (Q2), a second solenoid valve (K2), and a second power module (B2). One pole of the second power module (B2) is connected to one end of the second power control switch (Q2), and the other end of the second power control switch (Q2) is connected to the first metal contact (21). The other pole of the second power module (B2) is connected to the second metal contact (22) through the second solenoid valve (K2). The controlled end of the second power control switch (Q2) is connected to the second control module.

9. A fire extinguishing system for preventing accidental spraying according to claim 7, characterized in that: The fixed fire extinguishing medium supply device (4) adopts an aqueous film-forming foam fire extinguishing device.

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