CN217746459U - Dehumidification fan-type dehydrating unit based on metal switch cabinet - Google Patents

Abstract

The utility model proposes a dehumidification fan type dehumidification device based on a metal switch cabinet, the structure of which comprises a dehumidification fan (1), a first ventilation pipe (3), a second ventilation pipe (6); 2) Connected with one end of the first ventilation pipe (3), a plurality of first ventilation pipe outlets are distributed on the first ventilation pipe (3), and one end of the second ventilation pipe (6) is communicated with the air inlet (10) of the dehumidifying fan , a number of second ventilation pipe inlets are distributed on the second ventilation pipe (6), each first ventilation pipe outlet is connected with the air inlet of the corresponding switch cabinet (7), and the air outlet of each switch cabinet (7) is connected to A second ventilation pipe inlet on the second ventilation pipe (6) is connected correspondingly; the dehumidifying fan (1) in the present utility model is located outside the switch cabinet, which avoids that the existing heating and dehumidification device is located inside the switch cabinet easily causing local overheating and water vapor. Problems that are not easily distributed.

Description

A dehumidification fan type dehumidification device based on metal switch cabinet

technical field

The utility model relates to a dehumidification fan type dehumidification device based on a metal switch cabinet, which belongs to the technical field of dehumidification and cooling of switch cabinets.

Background technique

Metal switchgear equipment (high-voltage switchgear, central control cabinet, ring network cabinet, etc.) often has condensation on its internal equipment when the temperature drops suddenly, there is water in the cable trench, and the outlet of the switchgear is not sealed tightly. The insulation strength of electrical components is greatly reduced, and short-circuit faults occur. This phenomenon is more common in humid climate areas and rainy seasons in southern my country, and has become one of the serious threats to the safe and stable operation of power systems.

However, as far as the current traditional condensation dehumidification device is concerned, the heating and dehumidification device in the switch cabinet is likely to cause local overheating and there is a problem that water vapor is not easy to dissipate; at the same time, when the traditional condensation dehumidification device is installed and used, the hygrometer needs to be installed in the Inside the switchgear, power-off installation is required, which increases a lot of workload; in addition, for the dehumidification mechanism connected to multiple switchgear equipment, there is a high risk at the position of the phase connection of the switchgear. If the switchgear explodes due to an accident, the powerful Under the high pressure, the explosives will enter the adjacent switchgear with the return air valve, causing serious secondary losses.

Utility model content

The utility model proposes a dehumidification fan type dehumidification device based on a metal switch cabinet, and its purpose is to solve the problem that the existing heating and dehumidification device located inside the switch cabinet easily causes local overheating and the water vapor is not easily emitted.

The technical solution of the utility model: a dehumidification fan type dehumidification device based on a metal switch cabinet, its structure includes a dehumidification fan 1, a first ventilation pipe 3, a second ventilation pipe 6; the air outlet 2 of the dehumidification fan and the first ventilation pipe One end of the pipe 3 is connected, the first ventilation pipe 3 is distributed with outlets of several first ventilation pipes, one end of the second ventilation pipe 6 is connected with the air inlet 10 of the dehumidification fan, and the second ventilation pipe 6 is distributed with several second ventilation pipes Inlet, each outlet of the first ventilation pipe communicates with the air inlet of the corresponding switch cabinet 7 , and the air outlet of each switch cabinet 7 communicates with the inlet of a second ventilation pipe on the second ventilation pipe 6 .

Further, a temperature and humidity meter 9 is installed at the air outlet of each switch cabinet.

Further, an electric valve 4 and an A high-pressure one-way check valve 5 are connected in series between the outlet of each first ventilation pipe and the air inlet of the corresponding switch cabinet, and the outlet of the first ventilation pipe and the corresponding electric valve 4 One end of the electric valve 4 is connected with one end of the high-pressure one-way check valve 5 corresponding to A, and the other end of the high-pressure one-way check valve 5 of A is connected with the air inlet of the corresponding switch cabinet.

Further, the A high-pressure one-way check valve 5 is a stainless steel high-pressure check valve.

Further, the air outlet of the switch cabinet is located at the front cabinet door of the corresponding switch cabinet, and the air inlet of the switch cabinet is located at the rear cabinet door of the corresponding switch cabinet; The rear cabinet door shell is fixedly connected; the second ventilation pipe 6 is fixedly connected to the front cabinet door shell of the switch cabinet through internal expansion screws.

Further, a B high-pressure one-way check valve 8 is connected in series between the air outlet of each switch cabinet 7 and the corresponding second ventilation pipe inlet; the air outlet of each switch cabinet is connected to the corresponding B high-pressure single It communicates with one end of the check valve 8, and the other end of the B high-pressure one-way check valve 8 communicates with the corresponding second ventilation pipe inlet on the second ventilation pipe 6.

Further, the B high-pressure one-way check valve 8 is a stainless steel high-pressure check valve.

Further, the temperature and humidity meter 9 is installed on the inner wall corresponding to the B high-pressure one-way check valve 8 at the air outlet of each switch cabinet.

Further, a dehumidification fan type dehumidification device based on a metal switchgear, its structure also includes a control unit 11, the signal output end of the temperature and humidity meter 9 is connected to the signal input end of the control unit 11, and the first signal output of the control unit 11 terminal is connected to the signal input terminal of the dehumidification fan 1, and the second signal output terminal of the control unit 11 is respectively connected to the signal input terminals of each electric valve 4 correspondingly.

Further, the electric valve 4 is a manual-automatic integrated electric valve.

The beneficial effects of the utility model:

1) Compared with the traditional condensation dehumidification device, the dehumidification fan 1 in the utility model is located outside the switch cabinet, which avoids the problem that the existing heating and dehumidification device located inside the switch cabinet easily causes local overheating and the water vapor is not easy to disperse;

2) Through further design, the use of A high-pressure one-way check valve 5 and B high-pressure one-way check valve 8 avoids the high-pressure gas and foreign matter generated by the switchgear when a failure occurs and explodes through the first ventilation pipe 3 and the second ventilation pipe 3. Pipe 6 enters the adjacent switchgear to cause the risk of secondary loss.

Description of drawings

Accompanying drawing 1 is the application state structural diagram of an embodiment of the utility model.

Accompanying drawing 2 is the overall structural diagram of an embodiment of the utility model.

Accompanying drawing 3 is the installation position diagram of A high-pressure one-way check valve 5 and B high-pressure one-way check valve 8 in the utility model.

Accompanying drawing 4 is the schematic diagram of the installation position of temperature and humidity meter 9.

Accompanying drawing 5 is the connection schematic diagram among dehumidification blower 1, electric valve 4, temperature and humidity instrument 9, control unit 11.

In the accompanying drawings, 1 is the dehumidification fan, 2 is the air outlet of the dehumidification fan, 3 is the first ventilation pipe, 4 is the electric valve, 5 is A high-pressure one-way check valve, 6 is the second ventilation pipe, 7 is the switch cabinet, 8 is a B high-pressure one-way check valve, 9 is a temperature and humidity instrument, 10 is an air inlet of a dehumidification fan, and 11 is a control unit.

Detailed ways

A dehumidification fan type dehumidification device based on a metal switch cabinet, its structure includes a dehumidification fan 1, a first ventilation pipe 3, and a second ventilation pipe 6; the air outlet 2 of the dehumidification fan communicates with one end of the first ventilation pipe 3, and the first The outlet of some first ventilation pipes is distributed on the ventilation pipe 3, and one end of the second ventilation pipe 6 communicates with the air inlet 10 of the dehumidification fan. The second ventilation pipe 6 is distributed with some second ventilation pipe inlets. The outlets are all communicated with the air inlets of the corresponding switch cabinets 7 , and the air outlets of each switch cabinet 7 are connected with the inlets of a second ventilation pipe on the second ventilation pipe 6 .

An electric valve 4 and an A high-pressure one-way check valve 5 are connected in series between the outlet of each first ventilation pipe and the air inlet of the corresponding switch cabinet, and the outlet of the first ventilation pipe communicates with one end of the corresponding electric valve 4 , the other end of the electric valve 4 communicates with one end of the corresponding A high-pressure one-way check valve 5, and the other end of the A high-pressure one-way check valve 5 communicates with the air inlet of the corresponding switch cabinet; when working, the air outlet 2 of the dehumidification fan The first ventilation pipe 3 is connected to the rear cabinet door of the switch cabinet, and the dry air can be diverted to each switch cabinet through the first ventilation pipe 3, and the first ventilation pipe 3 is connected to A through the electric valve 4 installed at the air inlet of the switch cabinet. High-pressure one-way check valve 5; said A high-pressure one-way check valve 5 is preferably a stainless steel high-pressure check valve.

The air outlet of the switch cabinet is located at the front cabinet door of the corresponding switch cabinet, and the air inlet of the switch cabinet is located at the rear cabinet door of the corresponding switch cabinet; the first ventilation pipe 3 is preferably connected to the rear cabinet of the switch cabinet through an internal expansion screw. The door casing is fixedly connected; the second ventilation pipe 6 is preferably fixedly connected to the front cabinet door casing of the switch cabinet through internal expansion screws.

A B high-pressure one-way check valve 8 is connected in series between the air outlet of each switch cabinet 7 and the corresponding second ventilation pipe inlet; the air outlet of each switch cabinet is connected to the corresponding B high-voltage one-way check valve One end of the valve 8 communicates, and the other end of the B high-pressure one-way check valve 8 communicates with the corresponding second ventilation pipe inlet on the second ventilation pipe 6, and the second ventilation pipe 6 communicates with the air inlet 10 of the dehumidification fan; the B The high-pressure one-way check valve 8 is preferably a stainless steel high-pressure check valve.

The air outlet of each switch cabinet is equipped with a temperature and humidity meter 9; the temperature and humidity meter 9 is preferably installed on the inner wall of the B high pressure one-way check valve 8 corresponding to the air outlet of each switch cabinet; further preferably The temperature and humidity meter 9 is located at one end of the B high-pressure one-way check valve 8 close to the switch cabinet, and the temperature and humidity meter 9 preferably extends into the inside of the switch cabinet by about 3 cm.

The A high-pressure one-way check valve 5 allows air to flow into the switchgear only in one direction.

The B high-pressure one-way check valve 8 allows air to flow out of the switchgear only in one direction.

When the utility model works, when the temperature and humidity meter 9 located at the air outlet of the switch cabinet 7 detects that the humidity inside the switch cabinet 7 is higher than the set threshold, the dehumidification fan 1 is started, and the electric valve 4 corresponding to the rear cabinet door of the switch cabinet is opened. , the dry air is blown into the interior of the switch cabinet from the air inlet of the switch cabinet to take away the water vapor and start the dehumidification work; The second ventilation pipe 6 enters the dehumidification fan 1, and the dehumidification fan 1 processes the humid air in the second ventilation pipe 6 into dry air, and then enters the switch cabinet from the rear cabinet door through the first ventilation pipe 3 to form convection; When the temperature and humidity meter 9 located at the air outlet of the switch cabinet detects that the internal humidity of the switch cabinet is lower than the set threshold, the electric valve 4 of the rear cabinet door of the corresponding switch cabinet is closed, and the dehumidification work of the switch cabinet is stopped, so that more The air flow is sent to the remote switch cabinet equipment to ensure the dehumidification effect inside the remote switch cabinet equipment. At the same time, the A high-pressure one-way check valve 5 installed at the connection of the air inlet of the switch cabinet makes the air only flow into the switch in one direction. Cabinet, to ensure that when the switch cabinet explodes, the high-pressure gas generated by the explosion cannot invade the first ventilation pipe 3, so that the adjacent switch cabinet and the dehumidification fan 1 cannot be damaged; the B high-pressure one-way check valve installed at the air outlet of the switch cabinet 8 so that the air can only flow out of the switch cabinet in one direction, ensuring that when a fault occurs, the high-pressure gas generated is blocked by the B high-pressure one-way check valve 8 and cannot enter the normal switch cabinet through the second ventilation pipe 6; A high-pressure one-way check valve Valve 5 and B high-pressure one-way check valve 8 ensure that the high-pressure gas generated when the switchgear explodes cannot pass through the first ventilation pipe 3 and the second ventilation pipe 6 to damage the normal switchgear from the air inlet and outlet of the switchgear, thereby achieving The purpose of explosion-proof; preferably, the dehumidification fan 1 can be set to have a timing start function, and can also be set according to the humidity in the switch cabinet, such as: when the temperature and humidity meter 9 of any switch cabinet detects that the humidity reaches 60% or more, the dehumidification fan is automatically turned on 1. When the humidity of all switch cabinets is lower than 50%, the dehumidification fan 1 will automatically stop working.

Described a kind of dehumidification fan type dehumidification device based on metal switchgear, its structure also comprises control unit 11, the signal output terminal of temperature and humidity instrument 9 is connected with the signal input terminal of control unit 11, the first signal output terminal of control unit 11 It is connected to the signal input end of the dehumidification fan 1, and the second signal output end of the control unit 11 is respectively connected to the signal input end of each electric valve 4; The power supply of the instrument 9 is preferably taken from the external AC power supply of the switch cabinet 7. There is no need to take power and wires in the switch cabinet. During the whole working process, there is no need to open the front and rear doors of the cabinet body, and there is no need to power off the equipment. Drill holes and fix related components in safe positions to ensure the safety and convenience of installation and maintenance; when working, when the temperature and humidity meter 9 at the air outlet of the switch cabinet 7 detects that the humidity inside the switch cabinet 7 is higher than the set threshold, the signal Feedback to the control unit 11, the control unit 11 starts the dehumidification fan 1, and opens the electric valve 4 corresponding to the rear cabinet door of the switch cabinet, and the dry air is blown into the inside of the switch cabinet from the air inlet of the switch cabinet to take away the water vapor and start the dehumidification work The humid air coming out from the inside of the switch cabinet enters the second ventilation pipe 6 through the switch cabinet air outlet 8, and the humid air enters the dehumidification fan 1 through the second ventilation pipe 6, and the dehumidification fan 1 processes the humid air in the second ventilation pipe 6 into dry air, and then enter the switch cabinet from the rear cabinet door through the first ventilation pipe 3 to form convection; when the temperature and humidity meter 9 located at the air outlet of the switch cabinet detects that the internal humidity of the switch cabinet is lower than the set threshold , the control unit 11 closes the electric valve 4 at the rear cabinet door of the corresponding switch cabinet 7, stops the dehumidification work of the switch cabinet, and makes more air flow to the far-end switch cabinet equipment; if the control unit 11 or the temperature and humidity meter 9 If a fault occurs, the staff can manually open the electric valve 4 of the switch cabinet that needs to be dehumidified to perform manual forced dehumidification; the control unit 11 can set the dehumidification fan 1 to have a timing opening function, and can also be set according to the humidity in the switch cabinet, such as: when any A switch cabinet temperature and humidity meter 9 detects that the humidity reaches 60% and automatically turns on the dehumidification fan 1, and the humidity of all switch cabinets is lower than 50% and automatically stops the dehumidification fan 1 from working.

The electric valve 4 is preferably a hand-automatic integrated electric valve, and a further preferred model is an electric butterfly valve of D971X-16; the electric valve 4 can be opened and closed automatically by the control unit 1 during normal operation; when necessary, the electric valve 4 can also be opened and closed manually , The electric valve 4 can be manually opened and closed, which solves the problem that the control unit 1 fails or the temperature and humidity meter 9 fails to turn on the dehumidification fan 1 due to measurement errors.

Claims (10)

1. A dehumidification fan type dehumidification device based on a metal switchgear, characterized in that it includes a dehumidification fan (1), a first ventilation pipe (3), a second ventilation pipe (6); the air outlet (2) of the dehumidification fan and One end of the first ventilation pipe (3) is connected, and there are several first ventilation pipe outlets distributed on the first ventilation pipe (3), and one end of the second ventilation pipe (6) is connected with the air inlet (10) of the dehumidification fan. There are several second ventilation pipe inlets distributed on the ventilation pipe (6), each outlet of the first ventilation pipe is connected with the air inlet of the corresponding switch cabinet (7), and the air outlet of each switch cabinet (7) is connected with the second ventilation pipe A second ventilation pipe inlet on the pipe (6) is connected correspondingly. 2. A dehumidification fan-type dehumidification device based on a metal switchgear according to claim 1, characterized in that a temperature and humidity meter (9) is installed at the air outlet of each switchgear. 3. A dehumidification fan type dehumidification device based on metal switchgear according to claim 1, characterized in that an electric valve is connected in series between the outlet of each first ventilation pipe and the air inlet of the corresponding switchgear (4) and a high-pressure one-way check valve A (5), the outlet of the first ventilation pipe is connected to one end of the corresponding electric valve (4), and the other end of the electric valve (4) is connected to the corresponding high-pressure one-way check valve A ( 5) is connected to one end, and the other end of A high-pressure one-way check valve (5) is connected to the air inlet of the corresponding switch cabinet. 4. A dehumidification fan-type dehumidification device based on a metal switchgear according to claim 3, characterized in that the A high-pressure one-way check valve (5) is a stainless steel high-pressure check valve. 5. A dehumidification fan type dehumidification device based on metal switchgear according to claim 1, characterized in that the air outlet of the switchgear is located at the front door of the corresponding switchgear, and the air inlet of the switchgear is located at the corresponding The rear cabinet door of the switch cabinet; the first ventilation pipe (3) is fixedly connected to the rear cabinet door shell of the switch cabinet through internal expansion screws; the second ventilation pipe (6) is connected to the front cabinet of the switch cabinet through internal expansion screws The door shell is fixedly connected. 6. A dehumidification fan-type dehumidification device based on metal switchgear according to claim 2, characterized in that the air outlet of each switchgear (7) is connected in series with the corresponding inlet of the second ventilation pipe There is a B high-pressure one-way check valve (8); the air outlet of each switch cabinet communicates with one end of the corresponding B high-pressure one-way check valve (8), and the other end of the B high-pressure one-way check valve (8) It communicates with the corresponding inlet of the second ventilation pipe on the second ventilation pipe (6). 7. A dehumidification fan-type dehumidification device based on a metal switchgear according to claim 6, characterized in that the B high-pressure one-way check valve (8) is a stainless steel high-pressure check valve. 8. A dehumidification fan-type dehumidification device based on metal switchgear according to claim 6, characterized in that the temperature and humidity meter (9) is installed at the air outlet of each switchgear corresponding to B high-voltage one-way check on the inner wall of the valve (8). 9. A dehumidification fan type dehumidification device based on metal switchgear according to any one of claims 1-8, characterized in that it also includes a control unit (11), a signal output terminal of the temperature and humidity meter (9) and a control unit The signal input terminal of the unit (11) is connected, the first signal output terminal of the control unit (11) is connected with the signal input terminal of the dehumidification fan (1), and the second signal output terminal of the control unit (11) is respectively connected with each electric valve (4) The signal input terminal is connected correspondingly. 10. A dehumidification fan-type dehumidification device based on a metal switchgear according to claim 9, characterized in that the electric valve (4) is a manual electric valve.

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