Positive pressure explosion-proof cabinet heat dissipation device

Abstract

The utility model discloses a heat radiation device of a positive pressure explosion-proof cabinet, which relates to the field of explosion-proof cabinets and comprises an intelligent explosion-proof positive pressure control system, a gas source interface, a shunting unit, a vortex tube and a detection adjusting mechanism, the vortex tube separates low-temperature gas and conveys the gas to the positive pressure explosion-proof cabinet for heat radiation, and the detection adjusting mechanism is connected in a pipeline between the shunting unit and the vortex tube. The detection end of the detection adjusting unit is communicated with the positive pressure explosion-proof cabinet, and the air flow in the pipeline is adjusted according to the temperature in the positive pressure explosion-proof cabinet. The anti-explosion electromagnetic proportional valve and the temperature feedback module are additionally arranged on the cooling pipeline, the temperature in the positive-pressure anti-explosion cabinet is detected through the temperature sensor, and the anti-explosion electromagnetic proportional valve adjusts the opening and closing proportion of the valve according to the temperature value, so that the air flow of the vortex tube is controlled; the conveying amount of cooling airflow is adjusted according to the temperature in the positive pressure explosion-proof cabinet, the purpose of heat dissipation of different powers is achieved, and the flexibility of the heat dissipation device is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of automatic control, and in particular to a positive pressure explosion-proof cabinet heat dissipation device. Background Technology

[0002] A positive pressure explosion-proof cabinet is a safety device that operates on the principle of positive pressure. Through an internal ventilation system, clean air is forced into the cabinet from outside, maintaining a pressure inside that is consistently higher than the external ambient pressure. This prevents flammable and explosive materials from coming into contact with the outside air, reducing the risk of fire and explosion. However, the high heat generated by the frequency converter inside the positive pressure cabinet can accumulate and affect the normal operation of electrical components.

[0003] Existing positive pressure explosion-proof cabinet devices, such as the authorized announcement number CN216055949U, disclose a positive pressure explosion-proof distribution cabinet. Its key technical features are: it includes a heat dissipation component and a dustproof component. The heat dissipation component includes a heat dissipation element and a vent. The heat dissipation element includes a motor, a rotating shaft, and fan blades. The heat dissipation element is used to dissipate heat inside the cabinet through the vent. The dustproof component is connected to the heat dissipation element and is used to seal the vent.

[0004] Existing heat dissipation devices generally produce a fixed airflow, which cannot be adaptively adjusted according to the internal temperature of the positive pressure explosion-proof cabinet, resulting in poor flexibility. Furthermore, existing heat dissipation devices generally use motor-driven fan blades for air cooling, and in order to meet explosion-proof requirements, they must be used in conjunction with gas dustproof components, which makes the structure complex and increases the cost. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a positive pressure explosion-proof cabinet heat dissipation device to solve the problems existing in the background art.

[0006] This utility model provides the following technical solution: a heat dissipation device for a positive pressure explosion-proof cabinet, including an intelligent explosion-proof positive pressure control system connected to the positive pressure explosion-proof cabinet, and further including:

[0007] Gas source interface, used to connect to an inert gas or clean air source;

[0008] The diversion unit is connected to the gas source interface at one end and to the intelligent explosion-proof positive pressure control system at the other end.

[0009] The vortex tube is connected to the flow distribution unit at one end and inserted into the positive pressure explosion-proof cabinet at the other end. It is used to separate low-temperature gas and transport it to the positive pressure explosion-proof cabinet for heat dissipation.

[0010] The detection and adjustment mechanism is connected in the pipeline between the flow divider unit and the vortex tube, and the detection end of the detection and adjustment unit is connected to the positive pressure explosion-proof cabinet. It adjusts the air flow in the pipeline according to the internal temperature of the positive pressure explosion-proof cabinet.

[0011] Preferably, the flow diversion unit is a flow diversion valve.

[0012] Preferably, the detection and adjustment mechanism includes a proportional valve and a temperature feedback module. The proportional valve is mounted on a vortex tube, the diverter valve is connected to the gas pipe, one end of the temperature feedback module is connected to the positive pressure explosion-proof cabinet, and the other end is connected to the proportional valve.

[0013] Preferably, the proportional valve is an explosion-proof electromagnetic proportional valve.

[0014] Preferably, a flame arrestor is provided at the end of the vortex tube away from the positive pressure explosion-proof cabinet.

[0015] Preferably, a hand valve is connected to the end of the gas source interface near the diversion unit.

[0016] Beneficial effects:

[0017] 1. This utility model adds an explosion-proof electromagnetic proportional valve and a temperature feedback module to the cooling pipeline. The temperature inside the positive pressure explosion-proof cabinet is detected by a temperature sensor. The explosion-proof electromagnetic proportional valve adjusts the opening and closing ratio of the valve according to the temperature value, thereby controlling the air flow of the vortex tube. This allows the cooling airflow to be adjusted according to the temperature inside the positive pressure explosion-proof cabinet, achieving heat dissipation for different power levels and greatly improving the flexibility of the heat dissipation device.

[0018] 2. This utility model utilizes a diversion unit to divert the gas source, so that the same gas source not only creates a positive pressure environment inside the positive pressure explosion-proof cabinet, but also provides raw materials for separating low temperatures for the vortex tube. This not only reduces the laying of pipelines, but also improves the utilization of resources. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the heat dissipation device of the positive pressure explosion-proof cabinet of this utility model.

[0020] The attached diagram is labeled as follows: 1. Gas source interface; 2. Manual valve; 3. Diverter valve; 4. Intelligent explosion-proof positive pressure control system; 5. Gas pipe; 6. Explosion-proof electromagnetic proportional valve; 7. Temperature feedback module; 8. Vortex tube; 9. Flame arrestor; 10. Positive pressure explosion-proof cabinet. Detailed Implementation

[0021] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of the present invention.

[0022] This utility model provides a positive pressure explosion-proof cabinet heat dissipation device.

[0023] Example 1, as Figure 1 As shown, it includes an air source interface 1, a flow splitting unit, an intelligent explosion-proof positive pressure control system 4, a vortex tube 8, and a detection and adjustment mechanism.

[0024] The intelligent explosion-proof positive pressure control system 4 is connected to the positive pressure explosion-proof cabinet 10. The intelligent explosion-proof positive pressure control system can monitor the pressure inside the positive pressure explosion-proof cabinet 10 in real time and keep its internal environment stable.

[0025] Gas source interface 1 is used to connect to an inert gas or clean air source.

[0026] One end of the diversion unit is connected to the gas source interface 1 via a gas pipe 5, and the other end is connected to the intelligent explosion-proof positive pressure control system 4 via a gas pipe 5. The diversion unit here is a diversion valve 3, which is used to deliver inert gas or clean air to the inside of the positive pressure explosion-proof cabinet 10 through the intelligent explosion-proof positive pressure control system 4, ensuring that the pressure inside the positive pressure explosion-proof cabinet 10 is always higher than the external ambient pressure, forming a positive pressure environment. This can effectively prevent air that may contain explosive gases or dust from entering the equipment.

[0027] One end of the vortex tube 8 is connected to the diversion unit through the air pipe 5, and the other end is inserted into the positive pressure explosion-proof cabinet 10 to separate low-temperature gas and transport it to the positive pressure explosion-proof cabinet 10 for heat dissipation.

[0028] By using a diversion unit to divert the gas source, the same gas source not only creates a positive pressure environment inside the positive pressure explosion-proof cabinet 10, but also improves the separation of low-temperature raw materials for the vortex tube 8. This not only reduces the laying of pipelines, but also improves the utilization of resources.

[0029] The detection and adjustment mechanism is connected to the air pipe 5 between the diversion unit and the vortex tube 8, and the detection end of the detection and adjustment unit is connected to the positive pressure explosion-proof cabinet 10 through the air pipe 5. The air flow rate in the pipe is adjusted according to the internal temperature of the positive pressure explosion-proof cabinet 10.

[0030] The detection and adjustment mechanism includes a proportional valve and a temperature feedback module 7. The proportional valve here is an explosion-proof electromagnetic proportional valve 6, which is mounted on the vortex tube 8 and the diverter valve 3 is connected to the air pipe 5.

[0031] The temperature feedback module 7 is powered by a safety barrier in a safe area and can be used in hazardous locations. One end of the temperature feedback module 7 is connected to the positive pressure explosion-proof cabinet 10, and the other end is connected to a proportional valve. Here, the temperature feedback module 7 is a temperature sensor. The temperature sensor detects the internal temperature of the positive pressure explosion-proof cabinet 10. The explosion-proof electromagnetic proportional valve 6 adjusts its opening ratio according to the temperature value, thereby controlling the airflow of the vortex tube 8. This allows for the adjustment of the cooling airflow based on the internal temperature of the positive pressure explosion-proof cabinet 10, achieving different power dissipation purposes and greatly improving the flexibility of the heat dissipation device.

[0032] Furthermore, a flame arrestor 9 is provided at the end of the vortex tube 8 away from the positive pressure explosion-proof cabinet 10, which can effectively prevent flames or hot particles from entering the dangerous area.

[0033] Furthermore, a hand valve 2 is connected to the end of the gas source interface 1 near the distribution unit to allow for the opening and closing of the inert gas or clean air source, ensuring that the gas source interface 1 is always connected to the gas source.

[0034] The working principle of this invention is as follows: When the gas source interface 1 is connected to an inert gas or clean air source and the hand valve 2 is opened, the gas flows through the intelligent explosion-proof positive pressure control system 4 into the positive pressure explosion-proof cabinet 10, providing a positive pressure environment inside the cabinet. When the temperature feedback module 7 detects a temperature rise inside the cabinet exceeding a preset value, it sends an electrical signal to the explosion-proof electromagnetic proportional valve 6. The gas then flows from the diversion valve 3 through the explosion-proof electromagnetic proportional valve 6 into the vortex tube 8. The vortex tube 8 separates the low-temperature gas and allows it to enter the positive pressure explosion-proof cabinet 10, thereby reducing the temperature inside the cabinet. Furthermore, the explosion-proof electromagnetic proportional valve 6 can control the opening and closing degree of the valve according to the temperature rise value, thereby controlling the flow rate of the vortex tube 8 and achieving heat dissipation for different power levels.

[0035] Example 2 differs from Example 1 mainly in that the diversion unit is a distribution valve, which is also used to control the diversion of the gas source.

[0036] Example 3 differs from Example 1 mainly in that the flow splitting unit is a flow combining valve, which is also used to control the flow splitting of the gas source.

[0037] Example 4 differs from Example 1 mainly in that the gas source interface 1 is connected to a solenoid valve at the end near the diversion unit, eliminating the need to manually turn on the gas source.

[0038] Several points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0039] The above description is only a preferred embodiment of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. Any equivalent modifications or changes made by those skilled in the art based on the content disclosed in the present utility model should be included in the protection scope recorded in the claims.

Claims

1. A heat dissipation device for a positive pressure explosion-proof cabinet, comprising an intelligent explosion-proof positive pressure control system (4) connected to a positive pressure explosion-proof cabinet (10), characterized in that: Also include: Air source interface (1) for connecting inert gas or clean air source; Shunt unit, one end connected to the gas source interface (1) connection, the other end connected to the intelligent explosion-proof positive pressure control system (4) connection; Vortex tube (8), one end connected to the shunt unit, the other end inserted into the positive pressure explosion-proof cabinet (10), for separating low-temperature gas to the positive pressure explosion-proof cabinet (10) for heat dissipation; Detection and adjustment mechanism, connected in the pipeline between the shunt unit and the vortex tube (8), and the detection end of the detection and adjustment unit is connected to the positive pressure explosion-proof cabinet (10), which adjusts the gas flow in the pipeline according to the internal temperature of the positive pressure explosion-proof cabinet (10).

2. A positive pressure explosion-proof cabinet heat dissipating device according to claim 1, characterized in that: The shunt unit is a shunt valve (3).

3. A positive pressure explosion-proof cabinet heat dissipating device according to claim 2, characterized in that: The detection and adjustment mechanism includes a proportional valve and a temperature feedback module (7), the proportional valve is assembled on the vortex tube (8), the shunt valve (3) is connected on the air pipe (5), one end of the temperature feedback module (7) is connected with the positive pressure explosion-proof cabinet (10), and the other end is connected with the proportional valve.

4. A positive pressure explosion-proof cabinet heat dissipating device according to claim 3, characterized in that: The proportional valve is an explosion-proof electromagnetic proportional valve (6).

5. A positive pressure explosion-proof cabinet heat dissipation device according to any one of claims 1-4, characterized in that: The end of the vortex tube (8) away from the positive pressure explosion-proof cabinet (10) is provided with a fire barrier (9).

6. A positive pressure explosion-proof cabinet heat dissipating device according to any one of claims 1-4, characterized in that: The air source interface (1) is connected with a hand valve (2) near one end of the shunt unit.

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