Indirect fire trace tube automatic fire extinguishing system for power distribution cabinet

Abstract

The utility model discloses an indirect fire trace tube automatic fire extinguishing system for a power distribution cabinet. The indirect fire trace tube automatic fire extinguishing system comprises a control host, the smoke sensor is arranged in the power distribution cabinet and is electrically connected with the control host; the fire trace tube comprises a detection part arranged in the power distribution cabinet and a connection part extending to the outside of the power distribution cabinet, and the detection part is communicated with the connection part; the electromagnetic valve assembly is arranged at the tail end of the detection part; the medicament bottle valve group comprises a medicament bottle body in which a fire extinguishing medicament is stored and a bottle valve assembly arranged at the output end of the medicament bottle body; one end of the medicament release pipeline is connected to the medicament bottle body; the medicament spray head is arranged at the other end of the medicament release pipeline; the pressure feedback audible and visual alarm and the medicament release audible and visual alarm are electrically connected with the control host. According to the indirect fire trace tube automatic fire extinguishing system for the power distribution cabinet, fire hazards can be found in time at the initial stage of a fire, and the use condition of the fire trace tube automatic fire extinguishing device can be fed back in time.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic fire extinguishing of power distribution cabinets, in particular to an indirect fire detection tube automatic fire extinguishing system for power distribution cabinets. Background Art

[0002] At present, the commonly used indirect fire detection tube automatic fire extinguishing device for power distribution cabinets is mainly composed of fire detection tube, agent pipeline, nozzle, agent bottle, mechanical valve, sound and light alarm, manual starter, pressure gauge and plug at the end of fire detection tube. The principle of the fire detection tube automatic fire extinguishing device: the fire detection tube detects the temperature itself. When the temperature around the fire detection tube reaches the fixed temperature value detected by the fire detection tube, the fire detection tube melts and breaks to release pressure. The pressure release gives a trigger signal to the bottle valve group, and the fire extinguishing device starts, releasing the agent to extinguish the fire.

[0003] The existing indirect fire detection tube automatic fire extinguishing device for power distribution cabinet has the following shortcomings:

[0004] 1. It is impossible to detect the smoke generated by the initial fire, so the fire extinguishing is relatively delayed;

[0005] 2. The detection method is single and cannot detect the initial fire, which easily leads to missing the best time to extinguish the fire;

[0006] 3. After long-term use, the fire extinguishing device is prone to leakage of driving gas inside the fire extinguishing device, and the problem of reduced air pressure, which makes the fire extinguishing device unable to start normally; there is no pressure switch, and the reduction of driving pressure cannot be fed back and alarmed in time;

[0007] 4. It is impossible to provide alarm feedback on whether the fire extinguishing agent is released normally; there is no release switch, and it is impossible to judge whether the fire extinguishing agent is released in time

[0008] 5. There is no control host, which makes subsequent device upgrades inconvenient.

[0009] Therefore, it is a technical problem that technicians in this field need to solve urgently if they can provide an indirect fire detection tube automatic fire extinguishing system for distribution cabinets that can promptly detect fire hazards at the early stage of a fire and promptly feedback the use of the fire detection tube automatic fire extinguishing device. Utility Model Content

[0010] In view of this, the purpose of the utility model is to provide an indirect fire detection tube automatic fire extinguishing system for a distribution cabinet to address the deficiencies of the prior art, which includes:

[0011] Control host;

[0012] A smoke sensor is arranged inside the power distribution cabinet and is electrically connected to the control host;

[0013] A fire detection tube, comprising a detection portion arranged inside the power distribution cabinet, and a connection portion extending to the outside of the power distribution cabinet, wherein the detection portion is communicated with the connection portion, and the connection portion comprises a first connection end connected to a valve group of a medicine bottle;

[0014] A terminal solenoid valve assembly is arranged at the other end of the fire detection tube and is electrically connected to the control host;

[0015] The medicine bottle valve group includes a medicine bottle body storing a fire extinguishing agent and a bottle valve assembly arranged at the output end of the medicine bottle body, and the bottle valve assembly includes a pressure gauge of the pressure bottle group and a mechanical emergency start button;

[0016] A medicine release pipeline, one end of which is connected to the medicine bottle, and the other end of which is arranged inside the power distribution cabinet;

[0017] A medicine spray head is arranged at the other end of the medicine release pipeline.

[0018] A pressure feedback sound and light alarm and a medicine release sound and light alarm are electrically connected to the control host, and the pressure feedback sound and light alarm and the medicine release sound and light alarm are arranged on the upper part of the power distribution cabinet.

[0019] In certain embodiments, in the indirect fire detection tube automatic fire extinguishing system for a power distribution cabinet, the connecting portion further includes a second connecting end.

[0020] In some embodiments, the indirect fire detection tube automatic fire extinguishing system for the power distribution cabinet further includes a pressure switch 05 and a pressure gauge 06 connected to the second connection end, and the pressure switch and the pressure gauge are electrically connected to the control host;

[0021] The pressure gauge is used to detect the pressure value in the fire detection tube. When the pressure value in the fire detection tube reaches a predetermined threshold, the pressure switch sends an electrical signal to the control host.

[0022] In certain embodiments, the indirect fire detection tube automatic fire extinguishing system for a power distribution cabinet further includes a manual starter connected to the second connection end, and the manual starter is electrically connected to the control host.

[0023] In certain embodiments, in the indirect fire detection tube automatic fire extinguishing system for a power distribution cabinet, the detection unit is arranged in an S-shaped distribution around the electrical equipment inside the power distribution cabinet.

[0024] In certain embodiments, in the indirect fire detection tube automatic fire extinguishing system for a power distribution cabinet, the terminal solenoid valve assembly includes a housing, and a spring, an electromagnet, a piston, an air intake passage, and an exhaust passage disposed inside the housing;

[0025] The air inlet passage comprises a fire detection pipe interface, an integrally formed delivery pipe and a connecting pipe, one end of the delivery pipe extends to the outside of the shell, the fire detection pipe interface is arranged at one end of the delivery pipe; one end of the connecting pipe is connected to the other end of the delivery pipe;

[0026] One end of the exhaust passage is arranged in the connecting pipe, and the other end of the exhaust passage is arranged at the exhaust outlet of the shell;

[0027] A piston disposed in the connecting pipe;

[0028] a spring disposed between the piston and the inner wall of the housing;

[0029] An electromagnet disposed in the housing, the electromagnet being disposed adjacent to the piston;

[0030] Wherein, the piston includes a first working position against one end of the exhaust channel, and a second working position away from one end of the exhaust channel; when the electromagnet is not energized, the piston is located at the first working position, and one end of the exhaust channel is closed; after the electromagnet is energized, the piston is adsorbed to the second working position, and one end of the exhaust channel is opened and connected to the intake channel.

[0031] In certain embodiments, in the indirect fire detection tube automatic fire extinguishing system for the power distribution cabinet, a release switch is provided at the upper end of the agent release pipeline, and the release switch is electrically connected to the control host.

[0032] The beneficial effects of the utility model are:

[0033] 1. The utility model discloses an automatic fire extinguishing system of an indirect fire detection tube for a power distribution cabinet. The smoke sensor detects the presence of smoke in the power distribution cabinet to realize initial fire detection. When smoke is detected, the smoke sensor sends a signal to the terminal solenoid valve assembly. After the electromagnet is energized, the piston is adsorbed, and the air inlet channel and the exhaust channel are connected to discharge the gas in the fire detection tube. The driving pressure inside the fire detection tube drops to activate the control valve on the bottle valve group. The fire extinguishing agent reaches the agent nozzle through the agent release tube under the push of the driving gas inside the bottle body, and then sprays to the protection area to achieve the purpose of automatic fire extinguishing.

[0034] 2. The utility model discloses an indirect fire detection tube automatic fire extinguishing system for a power distribution cabinet, which is also provided with a pressure feedback sound and light alarm and a medicine release sound and light alarm. When only the pressure feedback sound and light alarm sends an alarm signal, it indicates that the driving gas pressure inside the device is too low; when both the pressure feedback sound and light alarm and the medicine release sound and light alarm send an alarm signal, it indicates that the fire extinguishing device is triggered. The automatic fire extinguishing system can detect smoke and trigger the fire extinguishing device to extinguish the fire when there is only smoke before the fire develops seriously, thus preventing the best fire extinguishing time from being missed and reducing property losses. It can also send out sound and light alarms according to the driving gas pressure of the fire extinguishing device and whether the fire extinguishing agent is released.

[0035] 3. The utility model discloses an indirect fire detection tube automatic fire extinguishing system for a power distribution cabinet, which can realize three starting modes: automatic start, manual start, and mechanical emergency start, solving the problem that a single detector fails and the fire extinguishing device cannot be started. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a first structural schematic diagram of the indirect fire detection tube automatic fire extinguishing system for a power distribution cabinet according to the utility model;

[0037] Figure 2 It is a structural schematic diagram of the terminal solenoid valve in the indirect fire detection tube automatic fire extinguishing system for the power distribution cabinet described in the utility model.

[0038] In the figure: 01-control host, 02-pressure feedback sound and light alarm, 03-medicine release sound and light alarm, 04-smoke sensor, 05-pressure switch, 06-pressure gauge, 07-manual starter, 08-fire detection tube, 09-power distribution cabinet, 10-end solenoid valve assembly, 11-medicine nozzle, 12-release switch, 13-medicine release pipeline, 14-mechanical emergency start button, 15-medicine bottle valve group, 16-bottle group pressure gauge, 17-fire detection tube interface, 18-air inlet channel, 19-spring, 20-electromagnet, 21-piston, 22-exhaust channel, 23-electrical equipment. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention.

[0040] like Figure 1 and Figure 2 As shown, an indirect fire detection tube automatic fire extinguishing system for a distribution cabinet comprises:

[0041] Control host 01;

[0042] A smoke sensor 04 is arranged inside the power distribution cabinet 09 and is electrically connected to the control host 01;

[0043] The fire detection tube 08 includes a detection part arranged inside the power distribution cabinet 09, and a connection part extending to the outside of the power distribution cabinet 09, the detection part is connected to the connection part, and the connection part includes a first connection end connected to the medicine bottle valve group 15;

[0044] The end solenoid valve assembly 10 provided in the detection part is electrically connected to the control host 01;

[0045] The medicine bottle valve group 15 includes a medicine bottle body storing fire extinguishing agent and a bottle valve assembly arranged at the output end of the medicine bottle body, and the bottle valve assembly includes a bottle pressure gauge 16 and a mechanical emergency start button 14;

[0046] A medicine release pipeline 13, one end of which is connected to the medicine bottle, and the other end of the medicine release pipeline 13 is arranged inside the power distribution cabinet 09;

[0047] A medicine spray head 11 disposed at the other end of the medicine release pipeline 13;

[0048] The pressure feedback sound and light alarm 02 and the medicine release sound and light alarm 03 are electrically connected to the control host, and the pressure feedback sound and light alarm 02 and the medicine release sound and light alarm 03 are arranged on the upper part of the distribution cabinet 09.

[0049] The indirect fire detection tube automatic fire extinguishing system for the power distribution cabinet described in the utility model, during use, when a fire occurs in the power distribution cabinet 09 and the fire is small in the initial stage, the emitted smoke is transmitted to the smoke sensor 04, and the smoke sensor 04 transmits the signal to the control host 01, and the control host 01 sends a voltage signal to the end solenoid valve, and the electromagnet 20 is energized, and the piston 21 is magnetically attracted upward. After the piston 21 is attracted upward, the exhaust channel 22 is opened, the air intake channel 18 is connected to the exhaust channel 22, and one end of the air intake channel 18 is connected to the fire detection tube 08, causing the gas discharge pressure inside the fire detection tube 08 to drop, and the driving pressure inside the fire detection tube 08 drops to start the control valve on the bottle valve group, and the fire extinguishing agent reaches the agent nozzle 11 through the agent release tube under the push of the driving gas inside the bottle body, and then sprays to the protection area, so as to achieve the purpose of automatic fire extinguishing. At this time, the pressure feedback sound and light alarm 02 and the agent release sound and light alarm 03 send out sound and light alarm signals. Therefore, the fire extinguishing system described in the utility model can detect smoke and trigger the fire extinguishing device to extinguish the fire when there is only smoke but the fire has not developed and spread seriously, thereby preventing the best fire extinguishing opportunity from being missed and reducing property losses. It can also issue sound and light alarms according to the driving gas pressure of the fire extinguishing device and whether the fire extinguishing agent is released.

[0050] In the above solution, the connecting portion also includes a second connecting end.

[0051] In the above scheme, the indirect fire detection tube automatic fire extinguishing system for the power distribution cabinet 09 further includes a pressure switch 05 and a pressure gauge 06 connected to the second connection end, and the pressure switch 05 and the pressure gauge 06 are electrically connected to the control host 01;

[0052] The pressure gauge 06 is used to detect the pressure value in the fire detection tube 08 . When the pressure value in the fire detection tube 08 reaches a predetermined threshold, the pressure switch 05 sends an electrical signal to the control host 01 .

[0053] There are three situations in which the driving gas pressure inside the medicine bottle valve group 15 drops:

[0054] 1. The fire detection tube 08 melts and ruptures when it encounters high temperature from flames. The fire detection tube 08 is connected to the agent bottle. There is a pressure difference between the fire detection tube 08 and the agent bottle. The pressure difference drives the gas to release the fire extinguishing agent.

[0055] 2. The end solenoid valve opens to release pressure, the device starts, the internal pressure of the fire detection tube 08 is released, there is a pressure difference between the fire detection tube 08 and the agent bottle, and the driving gas pushes the agent to release.

[0056] 3. The fire detection tube 08 itself leaks slowly or other reasons in the device cause the driving pressure to drop slowly.

[0057] Since there is a ventilation hole inside the control valve on the medicine bottle valve group 15 to connect the driving gas in the medicine bottle valve group 15 and the driving gas in the fire detection tube 08, the internal driving gas pressure slowly decreases and will not start to cause the medicine to be released. When the driving pressure inside the medicine bottle valve group 15 and the fire detection tube 08 drops to 1.2MPa or below, the pressure switch 05 will detect the pressure drop and give a feedback signal to the control host 01. The control host 01 controls the pressure feedback sound and light alarm 02 to send out a sound and light alarm signal, indicating that the driving pressure is too low.

[0058] When a fire occurs, the device starts, the driving gas in the fire detection tube 08 is quickly discharged, and the driving pressure inside the fire detection tube 08 drops rapidly. At this time, the driving air pressure in the agent bottle valve group 15 is higher than the air pressure in the fire detection tube 08, and the fire extinguishing agent in the agent bottle valve group 15 is released under the push of the driving gas in the agent bottle, and the fire extinguishing agent enters the agent release pipeline 13. The release switch 12 detects that the internal pressure of the agent release pipeline 13 changes, and feeds back the fire extinguishing agent release signal to the control host 01. The control host 01 controls the agent release sound and light alarm 03 to send out a sound and light alarm signal, prompting the release of the fire extinguishing agent.

[0059] In the above scheme, the indirect fire detection tube automatic fire extinguishing system for the power distribution cabinet also includes a manual starter 07 connected to the second connection end, and the manual starter 07 is electrically connected to the control host 01.

[0060] Manual start: When personnel find that there is a flame or abnormally high temperature at the scene for the first time, but the automatic start does not work at this time, the personnel on site can manually press the manual starter 07, the internal diaphragm of the manual starter 07 is punctured, and the driving gas pressure inside the fire detection tube 08 drops rapidly. At this time, the driving gas pressure in the valve group 15 of the agent bottle is higher than the gas pressure in the fire detection tube 08. The fire extinguishing agent in the valve group 15 of the agent bottle is released under the push of the driving gas in the agent bottle, and the fire extinguishing agent enters the agent release pipeline 13. The release switch 12 detects that the internal pressure of the agent release pipeline 13 changes, and feeds back the fire extinguishing agent release signal to the control host 01. The control host 01 controls the agent release sound and light alarm 03 to send out a sound and light alarm signal to prompt the release of the fire extinguishing agent; when the internal driving pressure of the fire detection tube 08 drops to 1.2MPa or below, the pressure switch 05 will detect the pressure reduction and give a feedback signal to the control host 01. The control host 01 controls the pressure feedback sound and light alarm 02 to send out a sound and light alarm signal.

[0061] In the above solution, the detection part of the fire detection tube 08 is arranged in an S-shaped distribution around the electrical equipment 23 inside the distribution cabinet 09.

[0062] The detection unit is arranged around the electrical equipment 23 to better monitor the temperature changes inside the power distribution cabinet 09 and ensure that potential safety hazards can be discovered in a timely manner.

[0063] In the above scheme, the terminal solenoid valve assembly 10 includes a housing, and a spring 19, an electromagnet 20, a piston 21, an intake passage 18 and an exhaust passage 22 arranged inside the housing;

[0064] The air inlet passage 18 includes a fire detection pipe interface 17, an integrally formed delivery pipe and a connecting pipe, one end of the delivery pipe extends to the outside of the shell, the fire detection pipe interface 17 is arranged at one end of the delivery pipe; one end of the connecting pipe is connected to the other end of the delivery pipe;

[0065] One end of the exhaust passage 22 is disposed in the connecting pipe, and the other end of the exhaust passage 22 is disposed at the exhaust outlet of the housing;

[0066] A piston 21 disposed in the connecting pipe;

[0067] A spring 19 disposed between the piston 21 and the inner wall of the housing;

[0068] An electromagnet 20 is disposed in the housing, and the electromagnet 20 is disposed adjacent to the piston 21; the electromagnet 20 is electrically connected to the control host 01;

[0069] Among them, the piston 21 includes a first working position against one end of the exhaust channel 22, and a second working position away from one end of the exhaust channel 22; when the electromagnet 20 is not energized, the piston 21 is located at the first working position, and one end of the exhaust channel 22 is closed; after the electromagnet 20 is energized, the piston 21 is adsorbed to the second working position, and one end of the exhaust channel 22 is opened and connected to the intake channel 18.

[0070] In the above scheme, the indirect fire detection tube automatic fire extinguishing system for the power distribution cabinet further includes a release switch 12 arranged at the upper end of the agent release pipeline 13, and the release switch 12 is electrically connected to the control host 01.

[0071] The installation steps of the indirect fire detection tube automatic fire extinguishing system for the power distribution cabinet described in the utility model are as follows:

[0072] 1. Control host 01 installation

[0073] Select the installation location of the control host 01 according to the site conditions, install it and fix it firmly;

[0074] 2. Installation of valve group 15 for medicine bottle

[0075] Select a medicine bottle valve group 15 of suitable capacity according to the size of the protection area of ​​the on-site power distribution cabinet, fix the medicine bottle valve group 15 in a suitable position, and adjust the direction of the bottle valve pressure gauge 16 and the mechanical emergency manual starter 14 for easy operation;

[0076] 3. Installation of pharmaceutical pipeline

[0077] Fix the medicine pipeline 13 according to the designed route, then fix the medicine nozzle 11 to a suitable position, adjust the angle of the medicine nozzle 11 and firmly connect it to the medicine release pipeline 13, and finally connect the medicine release pipeline 13 to the medicine pipe interface of the medicine bottle valve group;

[0078] 4. Detection part

[0079] When installing the fire detection tube 08, it is necessary to make full detection as much as possible to ensure that each electrical component can be detected. When installing, reserve a suitable length in advance, and install the end solenoid valve 10 on the fire detection tube to achieve the device startup function; the smoke sensor 04 should be installed at the top of the power distribution cabinet 09 or a place where smoke detection is easier;

[0080] 5. Installation of detection device and sound and light alarm

[0081] The detection device mainly includes a pressure switch 05 and a release switch 12. The pressure switch 05 is installed at the end of the fire detection tube 08 and fixed in a suitable position. The release switch 12 is installed on the medicine release pipeline 13 through the medicine tee to detect the internal pressure of the medicine release pipeline. The release switch 12 is installed close to one side of the bottle valve group.

[0082] Through the above 5 steps, the connection and installation of the whole system are completed. Then the engineers debug and run the system to make sure that all components of the system are installed in place and function normally.

[0083] The indirect fire detection tube automatic fire extinguishing system for the power distribution cabinet described in the utility model includes the following three starting modes:

[0084] 1. Automatic start:

[0085] When a fire occurs in the distribution cabinet 09 or there is an abnormally high temperature before the fire occurs, the high temperature generated by the flame, the abnormally high temperature or the smoke generated by the initial fire acts on the fire detection tube 08 or the smoke sensor 04 laid in the distribution cabinet. When the fire detection tube 08 or the smoke sensor 04 detects the temperature or smoke signal, the fire detection tube 08 ruptures or the end electromagnetic valve 10 opens, the device starts, the driving gas of the fire detection tube 08 is quickly discharged, and the driving pressure inside the fire detection tube 08 drops rapidly. At this time, the driving air pressure in the medicine bottle valve group 15 is higher than the air pressure of the fire detection tube 08, and the fire extinguishing agent in the medicine bottle valve group 15 is in the medicine bottle. The fire extinguishing agent is released under the push of the driving gas, and enters the agent release pipeline 13. The release switch 12 detects the change in pressure inside the agent release pipeline 13, and feeds back the fire extinguishing agent release signal to the control host 01. The control host 01 controls the agent release sound and light alarm 03 to send out a sound and light alarm signal, prompting the release of the fire extinguishing agent; when the internal driving pressure of the fire detection tube 08 drops to 1.2MPa or below, the pressure switch 05 will detect the pressure reduction and give a feedback signal to the control host 01. The control host 01 controls the pressure feedback sound and light alarm 02 to send out a sound and light alarm signal.

[0086] 2. Manual start:

[0087] When personnel find flames or abnormally high temperatures on site for the first time, but the automatic start does not work at this time, the personnel on site can manually press the manual starter 07, the internal diaphragm of the manual starter 07 is punctured, and the driving gas pressure inside the fire detection tube 08 drops rapidly. At this time, the driving air pressure in the valve group 15 of the agent bottle is higher than the air pressure in the fire detection tube 08, and the fire extinguishing agent in the valve group 15 of the agent bottle is released under the push of the driving gas in the agent bottle, and the fire extinguishing agent enters the agent release pipeline 13. The release switch 12 detects that the internal pressure of the agent release pipeline 13 changes, and feeds back the fire extinguishing agent release signal to the control host 01. The control host 01 controls the agent release sound and light alarm 03 to send out a sound and light alarm signal to prompt the release of the fire extinguishing agent; when the internal driving pressure of the fire detection tube 08 drops to 1.2MPa or below, the pressure switch 05 will detect the pressure reduction and give a feedback signal to the control host 01. The control host 01 controls the pressure feedback sound and light alarm 02 to send out a sound and light alarm signal.

[0088] 3. Mechanical emergency start:

[0089] Due to the uncertainty factor, both the automatic start and the manual start mode failed to start the automatic fire extinguishing device. At this time, the fire extinguishing device can be emergency started by pressing the emergency start button 14. After pressing the emergency start button 14, the driving gas inside the fire detection tube 08 is released from the bottle head control valve, and the driving gas pressure inside the fire detection tube 08 drops rapidly. At this time, the driving air pressure in the agent bottle valve group 15 is higher than the air pressure in the fire detection tube 08. The fire extinguishing agent in the agent bottle valve group 15 is released under the push of the driving gas in the agent bottle, and the fire extinguishing agent enters the agent release pipeline 13. The release switch 12 detects that the pressure inside the agent release pipeline 13 changes, and feeds back the fire extinguishing agent release signal to the control host 01. The control host 01 controls the agent release sound and light alarm 03 to send out a sound and light alarm signal to prompt the release of the fire extinguishing agent. When the driving pressure inside the fire detection tube 08 drops to 1.2MPa or below, the pressure switch 05 will detect the pressure reduction and give a feedback signal to the control host 01. The control host 01 controls the pressure feedback sound and light alarm 02 to send out a sound and light alarm signal.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. An indirect fire detection tube automatic fire extinguishing system for a power distribution cabinet, characterized in that: include: Control host (01); A smoke sensor (04) disposed inside the power distribution cabinet (09) and electrically connected to the control host (01); A fire detection tube (08), comprising a detection portion arranged inside the power distribution cabinet (09), and a connection portion extending to the outside of the power distribution cabinet (09), wherein the detection portion is in communication with the connection portion, and the connection portion comprises a first connection end connected to a medicine bottle valve group (15); A terminal solenoid valve assembly (10) disposed at one end of the detection portion and electrically connected to the control host (01); The medicine bottle valve group (15) comprises a medicine bottle body storing a fire extinguishing agent and a bottle valve assembly arranged at the output end of the medicine bottle body, and the bottle valve assembly comprises a bottle pressure gauge (16) and a mechanical emergency start button (14); A medicine release pipeline (13), one end of which is connected to the medicine bottle, and the other end of the medicine release pipeline (13) is arranged inside the power distribution cabinet (09); A medicine spray head (11) disposed at the other end of the medicine release pipeline (13); A pressure feedback sound and light alarm (02) and a medicine release sound and light alarm (03) are electrically connected to the control host (01), and the pressure feedback sound and light alarm (02) and the medicine release sound and light alarm (03) are arranged on the upper part of the power distribution cabinet (09).

2. The indirect fire detection tube automatic fire extinguishing system for a power distribution cabinet according to claim 1 is characterized in that: The connecting portion further includes a second connecting end.

3. The indirect fire detection tube automatic fire extinguishing system for a power distribution cabinet according to claim 2 is characterized in that: It also includes a pressure switch (05) and a pressure gauge (06) connected to the second connection end, wherein the pressure switch (05) and the pressure gauge (06) are electrically connected to the control host (01); The pressure gauge (06) is used to detect the pressure value in the fire detection tube (08). When the pressure value in the fire detection tube (08) reaches a predetermined threshold, the pressure switch (05) sends an electrical signal to the control host (01).

4. The indirect fire detection tube automatic fire extinguishing system for a power distribution cabinet according to claim 2 is characterized in that: It also includes a manual starter (07) connected to the second connection end, and the manual starter (07) is electrically connected to the control host (01).

5. The indirect fire detection tube automatic fire extinguishing system for a power distribution cabinet according to claim 1 is characterized in that: The detection parts are arranged in an S-shaped distribution around the electrical equipment (23) inside the power distribution cabinet (09).

6. The indirect fire detection tube automatic fire extinguishing system for a power distribution cabinet according to claim 1 is characterized in that: The terminal solenoid valve assembly (10) comprises a housing, and a spring (19), an electromagnet (20), a piston (21), an air intake passage (18) and an air exhaust passage (22) arranged inside the housing; The air inlet passage (18) comprises a fire detection pipe interface (17), an integrally formed delivery pipe and a connecting pipe, one end of the delivery pipe extends to the outside of the shell, the fire detection pipe interface (17) is arranged at one end of the delivery pipe; one end of the connecting pipe is connected to the other end of the delivery pipe; One end of the exhaust channel (22) is arranged in the connecting pipe, and the other end of the exhaust channel (22) is arranged at the exhaust outlet of the shell; A piston (21) disposed in the connecting pipe; a spring (19) disposed between the piston (21) and the inner wall of the housing; An electromagnet (20) disposed in the housing, wherein the electromagnet (20) is disposed adjacent to the piston (21); The piston (21) comprises a first working position abutting against one end of the exhaust channel (22), and a second working position away from one end of the exhaust channel (22); when the electromagnet (20) is not energized, the piston (21) is located at the first working position, and one end of the exhaust channel (22) is closed; after the electromagnet (20) is energized, the piston (21) is adsorbed to the second working position, and one end of the exhaust channel (22) is opened and communicated with the intake channel (18).

7. The indirect fire detection tube automatic fire extinguishing system for a power distribution cabinet according to claim 1 is characterized in that: It also includes a release switch (12) arranged at the upper end of the medicine release pipeline (13), and the release switch (12) is electrically connected to the control host (01).

Images