Underground substation environment temperature control device

Abstract

The utility model relates to a device for controlling the environment temperature and humidity of a substation when the environment temperature and humidity of an underground substation are both high. According to the technical scheme, the environment temperature control device for the underground substation comprises a high-pressure air inlet pipe, a spiral coil pipe, a heat exchange device and a vortex tube, the high-pressure air inlet pipe is connected to the air inlet end of the vortex tube, a cold end air outlet of the vortex tube is connected with an inlet of the spiral coil pipe, the spiral coil pipe is a spiral metal coil pipe, and the heat exchange device is connected with the vortex tube. The spiral coil is in a large-small shape, the large end is an air inlet end, the small end is an air outlet end, the air outlet end faces a to-be-cooled component in the underground substation, and an outlet of the spiral coil is communicated with the outside; the heat exchange device comprises a heat exchanger, a hot water pipe and a cold water pipe, and the hot water pipe and the cold water pipe are connected to an inlet and an outlet of the heat exchanger in parallel. Existing compressed air resources are fully utilized to achieve cold air preparation for power transformation equipment cooling, and the existing resources are fully utilized.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of for when substation environment temperature, humidity " double high " of well, substation environment temperature, humidity control device. BACKGROUND

[0002] In the underground power supply system, multiple stages, several substations are arranged for transmission and distribution. In winter, the substations close to the air intake well are cooled by the cold and humid air flow from the ground, and the temperature is lower, and the humidity is too low. In summer, the temperature of the substations close to the air intake well is higher, and the humidity is also higher. And the electrical equipment in the substation, especially the transformer and motor, are self-heating devices, and the temperature of the heat dissipation surface can reach above 80℃. And the air flow in the substation is slow, and the heat emitted is accumulated in the substation, so that the air pressure in the substation is higher than the air pressure in the roadway at the same position. The substation is mostly designed as a relatively closed space, which is not conducive to the air circulation in the substation, and aggravates the increase of temperature and humidity in the substation. Under high temperature and high humidity, the insulation of electrical equipment in the substation ages rapidly, and when the insulation is aged to a certain extent, various insulation aging failures will occur, and the equipment will be electrically broken or burned. In order to slow down the aging speed of the equipment and prevent electrical accidents, it is necessary to design a device for controlling the temperature and humidity of the substation, so that the temperature in the substation is within the safe range.

[0003] The existing technical solution mainly increases the air intake of the ventilator to improve the speed of air flow. However, when the air temperature of the air intake well is higher than 30℃ in summer, this method has very poor cooling effect. In view of these shortcomings, the purpose of the present application is achieved. Increasing the air intake can reduce the ambient temperature to a certain extent. However, in most cases, the ambient temperature of the substation is higher than 28℃ and the humidity is greater than 70%. Installing a mine explosion-proof air conditioner can effectively improve the ambient temperature and humidity. However, most enterprises stop due to high equipment cost and roadway reconstruction investment. It is necessary to invent a temperature control device that can fully utilize the existing resources and equipment of coal mine, with low investment and low operating cost. SUMMARY

[0004] In view of the above problems, the present application provides a kind of substation environment temperature control device in well, fully utilizes the compressed air resource that can be seen everywhere in mine, drives vortex tube to realize cold gas preparation and cooling to substation equipment.

[0005] To achieve the above purpose, the technical scheme adopted by the present application is:

[0006] The utility model underground substation environmental temperature control device, including high pressure air inlet pipe, spiral coil pipe, heat exchange device and vortex tube, high pressure air inlet pipe is connected in the air inlet end of vortex tube, the cold end air outlet of vortex tube connects the import of spiral coil pipe, spiral coil pipe is spiral metal coil pipe, spiral is one big one small, big end is the air inlet end, small end is the air outlet end, the air outlet end faces the cooling part in the underground substation, the export of spiral coil pipe is connected with the outside world.

[0007] The hot end air outlet of the vortex tube is connected to the heat exchange device, which includes a heat exchanger, a hot water pipe, and a cold water pipe. The hot water pipe and the cold water pipe are connected in parallel to the inlet and outlet of the heat exchanger.

[0008] According to the underground substation environmental temperature control device, the spiral coil pipe includes an aluminum pipe arranged in a spiral shape, which is arranged on a coil pipe rack. The coil pipe rack is fixed at the air inlet of the underground substation.

[0009] According to the underground substation environmental temperature control device, a horn-shaped cylinder is provided outside the spiral coil pipe. The large end is directed towards the air inlet, and the small end is directed towards the air inlet of the underground substation.

[0010] According to the underground substation environmental temperature control device, the high-pressure air inlet pipe is connected to the high-pressure air source of the underground air motor. An intrinsic safety electromagnetic valve is provided on the high-pressure air inlet pipe. A temperature control sensor is provided in the underground substation. The temperature control sensor and the intrinsic safety electromagnetic valve are connected to a control circuit.

[0011] According to the underground substation environmental temperature control device, the control circuit is an explosion-proof PLC.

[0012] The advantages of the utility model are:

[0013] The existing compressed air resources are fully utilized to realize cold air preparation for temperature reduction of the substation, and the existing resources are fully utilized.

[0014] The device can be installed at the air inlet or air regulating window of each substation. It can be used without a cooling fan or with the existing air speed. A smaller power fan is selected to save equipment investment cost and operating cost.

[0015] The operating cost is low, and compared with air conditioning equipment, the power consumption can be reduced. Moreover, the heat directly enters the underground substation, and the collected heat can be used for dust removal and water cooling. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the top view of the utility model,

[0017] Figure 2 is the front view of the utility model.

[0018] Reference signs: 1, spiral coil; 2, air inlet; 3, vortex tube; 4, heat exchanger; 5, hot water pipe; 6, cold water pipe; 7, heat exchange device 8, coil; 9, cold air outlet; 10, box. DETAILED DESCRIPTION

[0019] The specific content of the utility model is further described as follows:

[0020] The utility model underground substation environmental temperature control device, including high pressure air pipe 2, spiral coil 1, heat exchange device 7 and vortex tube 3, high pressure air pipe 2 is connected in the air inlet end of vortex tube, and the cold end air outlet of vortex tube 3 is connected the import of spiral coil 1, and spiral coil 1 is spiral metal coil, and the spiral is big and small, and the big end is the air inlet end, and the small end is the air outlet end, and the air outlet end faces the cooling component in the underground substation, and the outlet of spiral coil 1 is connected with the outside.

[0021] The device uses vortex tube refrigeration, which separates cold and hot air streams by the action of vortex tube, and uses cold air stream for refrigeration. Vortex tube refrigeration uses the viscous friction effect between the outer spiral airflow layers to separate cold and hot air streams from high-pressure high-speed airflow.

[0022] The hot end air outlet of vortex tube 3 in the device is connected with heat exchange device 7, and the heat exchange device 7 includes heat exchanger 4, hot water pipe 5 and cold water pipe 6, and the hot water pipe 5 and the cold water pipe 6 are connected in parallel to the inlet and outlet of the heat exchanger 4.

[0023] Specifically, the spiral coil 1 includes an aluminum pipe arranged in a spiral shape, which is arranged on a coil bracket fixed at the air inlet of the underground substation. The spiral coil 1 is provided with a horn-shaped cylinder outside, and the large end is directed towards the air inlet, and the small end is directed towards the air inlet of the underground substation. This structure can collect air flow, and a fan can also be added to increase air flow speed.

[0024] The cold air flow in the spiral coil 1 exchanges heat with the natural air flow, reducing the temperature of the natural air flow and blowing it to the substation equipment for cooling.

[0025] The high-pressure air pipe 2 of the device is connected to the high-pressure air source of the underground air motor, and the intrinsic safety electromagnetic valve is arranged on the high-pressure air pipe. A temperature control sensor is arranged in the underground substation, and the temperature control sensor and the intrinsic safety electromagnetic valve are connected to a control circuit. The control circuit is an explosion-proof PLC.

[0026] When compressed air enters from the air inlet pipe, the temperature of the cold end air outlet of the vortex tube 3 will be lower than that of the air inlet; the spiral coil 8 in the cold end is filled with cold air, and the air flow flowing through the spiral coil 8 will blow out cold air.

[0027] In order to accelerate the cooling, a fan is arranged at the end of the spiral cylinder-shaped air inlet to increase the air inlet volume. An electromagnetic control valve is arranged on the high-pressure air inlet pipe to adjust the high-pressure air volume and adjust the cold air temperature in the spiral coil 8.

[0028] In the device, the heat exchanger 4 in the heat exchange device 7 is connected with the underground dust removal water system to prevent the heat from directly entering the underground environment.

[0029] The device fully utilizes the existing compressed air resources to realize cold air preparation for the substation cooling, and fully utilizes the existing resources. The device can be installed at the air inlet or air regulating window of each substation, and a cooling fan can not be arranged or the existing air speed can be utilized, and a smaller power fan is selected to save equipment investment cost and operation cost.

[0030] The operation cost is low, and the power consumption can be reduced compared with the air conditioning equipment.

Claims

1. A downhole substation environmental temperature control device, characterized by, It comprises a high-pressure air inlet pipe (2), a spiral coil pipe (1), a heat exchange device (7) and a vortex tube (3), the high-pressure air inlet pipe (2) is connected to the air inlet end of the vortex tube, the cold end air outlet of the vortex tube (3) is connected to the inlet of the spiral coil pipe (1), the spiral coil pipe (1) is a spiral metal coil pipe, the spiral is large-small, the large end is the air inlet end, and the small end is the air outlet end, the air outlet end faces the components to be cooled in the underground substation, and the outlet of the spiral coil pipe (1) is communicated with the outside; The hot end air outlet of the vortex tube (3) is connected with the heat exchange device (7), and the heat exchange device (7) comprises a heat exchanger (4), a hot water pipe (5) and a cold water pipe (6), and the hot water pipe (5) and the cold water pipe (6) are connected in parallel to the inlets and outlets of the heat exchanger (4).

2. The downhole transformer environment temperature control device of claim 1, wherein, The spiral coil pipe (1) comprises an aluminum pipe arranged in a spiral shape and arranged on a coil pipe support, and the coil pipe support is fixed at the air inlet of the underground substation.

3. A downhole transformer environment temperature control device according to claim 2, characterised in that, The spiral coil pipe (1) is externally provided with a horn-shaped cylinder, the large end of the horn-shaped cylinder faces the air inlet direction, and the small end of the horn-shaped cylinder faces the air inlet of the underground substation.

4. The ambient temperature control device for underground substations according to claim 2, characterized in that, The high-pressure air inlet pipe (2) is connected to a high-pressure air source of a downhole air motor, an intrinsic safety electromagnetic valve is arranged on the high-pressure air inlet pipe, a temperature control sensor is arranged in the underground substation, and the temperature control sensor and the intrinsic safety electromagnetic valve are connected to a control circuit.

5. A downhole transformer environment temperature control device according to claim 4, characterised in that, The control circuit is an explosion-proof PLC.

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