Low-voltage distribution box with internal protection device

Abstract

The utility model discloses a low-voltage distribution box with an internal protection device, which belongs to the field of low-voltage distribution boxes and comprises a box body, a carbon dioxide storage tank is fixedly mounted in a tank body mounting cavity through a hoop, nozzles are fixedly mounted in a plurality of mounting holes, and the nozzles are fixedly mounted in the mounting holes. A plurality of smoke sensors and infrared sensors are fixedly installed on the box door at equal intervals, and the smoke sensors and the infrared sensors which are transversely arranged and arranged in different rows are installed on the box door, so that the number of monitoring sensors can be increased, a fire point can be in closer contact with the monitoring sensors, and the smoke sensors and the infrared sensors can be switched on through an electromagnetic valve at the corresponding position of a controller. The spraying positions are more accurate, transverse layered spraying in the box body can be achieved, damage to part of control switches caused by large-area spraying of carbon dioxide is reduced, and use safety and practicability are improved.

Description

Technical Field

[0001] The utility model relates to the field of low-voltage distribution boxes, and more specifically to a low-voltage distribution box with an internal protection device. Background Art

[0002] The rated current of the low voltage distribution box (cabinet) is AC 50Hz, and the rated voltage is 380V. The distribution system is used for power, lighting and power distribution. The product has the characteristics of strong breaking capacity, good dynamic thermal stability, flexible electrical scheme, convenient combination, strong series and practicality, and novel structure.

[0003] In order to improve the safety of the control switch installed inside the low-voltage distribution box during operation, generally, a protective device is installed inside the low-voltage distribution box, such as a surge protector for transmission voltage protection. However, there is still a lack of protective devices against fires caused by line short circuits and overloads, and the safety of use is low. Therefore, we propose a low-voltage distribution box with an internal protection device to solve the above problems. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a low-voltage distribution box with an internal protection device, which installs a carbon dioxide storage tank and a solenoid valve that controls the injection of several nozzles in different horizontal directions inside the box body, so that the carbon dioxide inside the carbon dioxide storage tank can be injected in horizontal layers, and the solenoid valve is detected by several smoke sensors and infrared sensors arranged horizontally on the box door and controlled by a controller, which facilitates the injection of carbon dioxide in the corresponding horizontal direction for the smoke detected by the smoke sensors and infrared sensors in different horizontal directions, reduces the damage of large-area injection of carbon dioxide to some control switches, and improves the safety and practicality of use.

[0006] 2. Technical solution

[0007] To solve the above problems, the utility model adopts the following technical solutions.

[0008] A low-voltage distribution box with an internal protection device comprises a box body, one side of the box body is rotatably connected to a box door via a hinge, a partition is fixedly installed inside the box body, the interior of the box body is divided into a control switch chamber and a tank installation chamber by the partition, a control switch bracket is provided inside the control switch chamber, a carbon dioxide storage tank is fixedly installed inside the tank installation chamber via a clamp, a plurality of mounting holes are equidistantly provided on the partition, and nozzles are fixedly installed inside the plurality of mounting holes, a plurality of smoke sensors and infrared sensors are equidistantly fixedly installed on the box door, and a controller is also fixedly installed on the box door, and the plurality of smoke sensors and infrared sensors are connected to the controller via connecting lines.

[0009] Furthermore, two sides of the control switch bracket are fixedly mounted to one side of the partition and one side of the inner wall of the box respectively, and a plurality of clamping beams are arranged on the control switch bracket, and the clamping beams are located between two adjacent rows of smoke sensors in the transverse direction.

[0010] Furthermore, several of the nozzles are connected horizontally by connecting pipe 1, and the air inlet end of the connecting pipe 1 is fixedly connected to a solenoid valve, and the air inlet ends of several of the solenoid valves are connected by connecting pipe 2, and the air inlet end of the connecting pipe 2 is connected to the air outlet end of the carbon dioxide storage tank.

[0011] Furthermore, a plurality of the solenoid valves are connected to the controller via wires.

[0012] Furthermore, a plurality of strip-shaped ventilation holes are provided on both sides of the box body and the partition.

[0013] 3. Beneficial effects

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] (1) This solution, by installing smoke sensors and infrared sensors arranged horizontally in different rows on the door, can not only increase the number of monitoring sensors and get closer to the fire point, but also control the carbon dioxide to be sprayed from several nozzles arranged horizontally in different rows by opening the solenoid valve at the corresponding position of the controller. The spraying position is more precise, and horizontal layered spraying can be achieved inside the box, reducing the damage of large-area spraying of carbon dioxide to some control switches, thereby improving the safety and practicality of use;

[0016] (2) In this solution, the connecting beam is located between two adjacent rows of smoke sensors in the transverse direction, so that the connecting line between two adjacent control switches in the longitudinal direction can be closer to the smoke sensor and the infrared sensor, which is beneficial to the monitoring of the smoke sensor and the infrared sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 For the utility model Figure 1 The enlarged structural diagram at A in the middle;

[0019] Figure 3 This is a schematic diagram of the control switch bracket structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the connection between the nozzle of the utility model and the carbon dioxide storage tank.

[0021] Description of the numbers in the figure:

[0022] 1. Box body; 101. Control switch cavity; 102. Tank installation cavity; 2. Box door; 3. Partition; 4. Control switch bracket; 401. Snap-on crossbeam; 5. Carbon dioxide storage tank; 6. Nozzle; 7. Smoke sensor; 8. Infrared sensor; 9. Controller; 10. Connecting pipe 1; 11. Solenoid valve; 12. Connecting pipe 2. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention specification; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention are within the scope of protection of the present invention.

[0024] Embodiment 1:

[0025] See also Figure 1 -

[0026] Figure 4 A low-voltage distribution box with an internal protection device comprises a box body 1, a box door 2 is rotatably connected to one side of the box body 1 through a hinge, a partition 3 is fixedly installed inside the box body 1, and the inside of the box body 1 is divided into a control switch chamber 101 and a tank installation chamber 102 by the partition 3, a control switch bracket 4 is arranged inside the control switch chamber 101, a carbon dioxide storage tank 5 is fixedly installed inside the tank installation chamber 102 through a clamp, a plurality of mounting holes are equidistantly provided on the partition 3, and nozzles 6 are fixedly installed inside the plurality of mounting holes, a plurality of smoke sensors 7 and infrared sensors 8 are equidistantly fixedly installed on the box door 2, and a controller 9 is also fixedly installed on the box door 2, and the plurality of smoke sensors 7 and infrared sensors 8 are connected to the controller 9 through connecting wires;

[0027] In the horizontal direction, a plurality of nozzles 6 are connected through a connecting pipe 10, and the air inlet end of the connecting pipe 10 is fixedly connected with a solenoid valve 11, and the air inlet ends of a plurality of solenoid valves 11 are connected through a connecting pipe 2 12, and the air inlet end of the connecting pipe 2 12 is connected to the air outlet end of the carbon dioxide storage tank 5;

[0028] A plurality of solenoid valves 11 are connected to the controller 9 via wires.

[0029] The working principle of this low-voltage distribution box with internal protection device is:

[0030] When a ignition point of smoke or flame appears at the control switch installed inside the box body 1, it is first detected by the smoke sensor 7 and infrared sensor 8 installed on the box door 2 closest to the ignition point. At this time, the smoke sensor 7 and infrared sensor 8 transmit signals to the controller 9, so that the controller 9 controls the electromagnetic valve 11 closest to the ignition point to open. At this time, the carbon dioxide stored in the carbon dioxide storage tank 5 can be discharged through the connecting pipe 2 12 and the connecting pipe 1 10, and sprayed out through the corresponding horizontal multiple nozzles 6, so as to achieve the effect of extinguishing the fire at the ignition point;

[0031] Since smoke sensors 7 and infrared sensors 8 arranged horizontally in different rows are installed on the box door 2, in addition to increasing the number of monitoring sensors and getting closer to the fire point, the solenoid valve 11 at the corresponding position of the controller 9 can be opened to control several nozzles 6 arranged horizontally in different rows to spray carbon dioxide. The spraying position is more precise, and horizontal layered spraying can be achieved inside the box body 1, reducing the damage of large-area spraying of carbon dioxide to some control switches, thereby improving the safety and practicality of use.

[0032] Embodiment 2:

[0033] In view of the above embodiment 1, for further description, refer to Figure 1 and Figure 3 The two sides of the control switch bracket 4 are fixedly installed on one side of the partition 3 and one side of the inner wall of the box body 1 respectively. A plurality of clamping beams 401 are arranged on the control switch bracket 4, and the clamping beams 401 are located between two adjacent rows of smoke sensors 7 in the transverse direction. A plurality of strip ventilation holes are opened on both sides of the box body 1 and the partition 3.

[0034] By means of the clamping crossbeam 401 on the control switch bracket 4, the installation of different control switches inside the box 1 is facilitated, and by means of the structural form in which the clamping crossbeam 401 is located between two adjacent rows of smoke sensors 7 in the transverse direction, the connecting line between two adjacent control switches in the longitudinal direction can be made closer to the smoke sensor 7 and the infrared sensor 8, which is beneficial to the monitoring of the smoke sensor 7 and the infrared sensor 8.

[0035] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A low-voltage distribution box with an internal protection device, comprising a box body (1), characterized in that: A box door (2) is rotatably connected to one side of the box body (1) via a hinge, a partition (3) is fixedly installed inside the box body (1), the inside of the box body (1) is divided into a control switch chamber (101) and a tank installation chamber (102) by the partition (3), a control switch bracket (4) is arranged inside the control switch chamber (101), a carbon dioxide storage tank (5) is fixedly installed inside the tank installation chamber (102) via a clamp, a plurality of mounting holes are equidistantly provided on the partition (3), and nozzles (6) are fixedly installed inside the plurality of mounting holes, a plurality of smoke sensors (7) and infrared sensors (8) are fixedly installed on the box door (2) at an equal distance, and a controller (9) is also fixedly installed on the box door (2), and the plurality of smoke sensors (7) and infrared sensors (8) are connected to the controller (9) via connecting wires.

2. A low voltage distribution box with an internal protection device according to claim 1, characterized in that: The two sides of the control switch bracket (4) are respectively fixedly mounted to one side of the partition (3) and one side of the inner wall of the box body (1); a plurality of clamping cross beams (401) are provided on the control switch bracket (4), and the clamping cross beams (401) are located between two adjacent rows of smoke sensors (7) in the transverse direction.

3. A low voltage distribution box with an internal protection device according to claim 1, characterized in that: In the transverse direction, a plurality of the nozzles (6) are connected to each other via a connecting pipe (10), and the air inlet end of the connecting pipe (10) is fixedly connected to a solenoid valve (11), and the air inlet ends of a plurality of the solenoid valves (11) are connected via a connecting pipe (12), and the air inlet end of the connecting pipe (12) is connected to the air outlet end of the carbon dioxide storage tank (5).

4. A low voltage distribution box with an internal protection device according to claim 3, characterized in that: The plurality of solenoid valves (11) are connected to the controller (9) via wires.

5. A low voltage distribution box with an internal protection device according to claim 1, characterized in that: A plurality of strip-shaped ventilation holes are provided on both sides of the box body (1) and on the partition plate (3).

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