CN111238023A - A circulating antifreeze device - Google Patents

Abstract

The invention discloses a circulating antifreeze device, which comprises a moving part, a circulating water component and a control part. The moving part is used to support and move the circulating antifreeze device; the circulating water assembly includes a water storage tank, a water inlet and a water outlet that communicate with the water storage tank, and the water storage tank is fixed on the moving part and its side wall is provided with a heater The water inlet and outlet are connected with the water inlet and outlet of the DC power converter valve cooling system respectively to form a heating circulating water circuit; the control part is installed on the moving part to control the circulation of the circulating water and the heater opening and closing. The circulating anti-freezing device provided by the present invention adds a set of externally arranged and flexibly used circulating anti-freezing device to the outer water cooling area. The circulating antifreeze device is provided with moving parts, and is heated by circulating water to continuously provide heat to the air cooler outside the valve to prevent it from freezing, and has the advantages of flexible movement, low cost and good antifreeze effect.

Description

A circulating antifreeze device

technical field

The invention relates to the technical field of a DC power transmission converter valve cooling system, in particular to a circulating antifreeze device for preventing the DC power transmission converter valve cooling system from freezing in winter.

Background technique

The UHVDC converter valve cooling system is the main system to ensure the stable operation of the converter valve, the core equipment of the converter station, and an important part of the converter station.

In the prior art, the research on the DC power converter valve cooling system mainly focuses on optimizing the system structure, improving the degree of automation, and reducing the volume of the heat exchanger or the volume of the entire system. There are few technical studies on preventing the freezing of the cooling system of the HVDC converter valve in winter.

However, most of the HVDC converter valve cooling systems use original antifreeze equipment in northern regions. In winter, in order to prevent the cooling medium (pure water, or a mixture of water and ethylene glycol) from freezing in the external cooling pipes of the HVDC converter valve cooling system Destroying the pipeline, building an anti-freezing shed in the cold area outside the valve, and setting up an anti-freezing shed, have the disadvantages of being unable to move, high cost and poor anti-freezing effect.

SUMMARY OF THE INVENTION

An object of the present invention is to provide an external cyclic antifreeze device to at least solve some of the defects in the prior art.

A further object of the present invention is to provide a circulating antifreeze device with flexible movement, low cost and good antifreeze effect.

Another further object of the present invention is to provide an intelligently controlled circulating antifreeze device.

In particular, the present invention provides a cycle antifreeze device, comprising:

a moving part for supporting and moving the circulating antifreeze device;

A circulating water assembly, including a water storage tank, a water inlet and a water outlet that communicate with the water storage tank, the water storage tank is fixed on the moving member and the side wall of the water storage tank is provided with a heater to heat the circulating water, the water inlet and the water outlet respectively connected with the water inlet end and the water outlet end of the DC transmission converter valve cooling system to form a heating circulating water circuit; and

The control part is installed on the moving part to control the circulation of the circulating water and the opening and closing of the heater.

Preferably, the heater includes a plurality of heaters and is evenly distributed on the side wall of the water storage tank;

Group control of multiple heaters.

Preferably, the water inlet member includes a water inlet pipe communicated with the water storage tank and a water inlet filter arranged on the water inlet pipe.

Preferably, the water outlet member includes a water outlet pipe communicated with the water storage tank and a water outlet filter arranged on the water outlet pipe.

Preferably, the water outlet part further comprises a circulating pump installed on the water outlet pipe to provide circulating power to the circulating antifreeze device; the control part controls the opening and closing of the circulating pump.

Preferably, a water quality detector is arranged between the water outlet filter and the circulating pump to detect the water quality of the circulating water.

Preferably, a temperature detector is arranged between the water outlet filter and the circulating pump to detect the temperature of the circulating water.

Preferably, the top of the water storage tank is provided with a sealing cover to close the water storage tank.

Preferably, Y-type filters are used for the water inlet filter and the water outlet filter.

Preferably, the moving part comprises a fixed plate, a sliding wheel arranged at the bottom of the fixed plate and an armrest arranged on one side of the fixed plate;

A water storage tank and a control part are arranged on the fixing plate.

Compared with the circulating anti-freezing device in the prior art, the circulating anti-freezing device provided by the present invention has the following beneficial effects:

The circulating antifreeze device provided by the invention is used to prevent the external cooling air cooler of the UHVDC converter valve cooling system from freezing in winter, and a set of externally arranged and flexibly used circulating antifreezing device is added to the external water cooling area. The circulating antifreeze device is provided with moving parts, and is heated by circulating water to continuously provide heat to the air cooler outside the valve to prevent it from freezing, and has the advantages of flexible movement, low cost and good antifreeze effect.

Further, the circulating antifreeze device uses a control part to control the circulation of circulating water and the opening and closing of the heater, which not only realizes the automatic control of the heater, that is, when the temperature of the circulating water in the water storage tank is lower than the preset low value, the heater Automatic start, when the circulating water temperature of the water storage tank is higher than the set high value, the heater will stop automatically. This function can ensure that the circulating water temperature of the water storage tank is always within the preset temperature range; Automatic control of the circulating pump, that is, when the water level of the water storage tank reaches a certain height, the circulating pump will automatically start, and when the water level of the water storage tank drops to a certain height, the circulating pump will automatically stop. The phenomenon of being drained occurs; and an intelligently controlled circulating antifreeze device is provided.

Description of drawings

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

FIG. 1 is an overall schematic diagram of the circulating antifreeze device in the present invention.

In the figure: 10. Circulating antifreeze device, 100, moving parts, 110, fixed plate, 120, sliding wheel, 130, handrail, 200, circulating water assembly, 210, water storage tank, 211, sealing cover, 220, water inlet , 221, water inlet pipe, 222, water inlet filter, 230, water outlet, 231, water outlet pipe, 232, water outlet filter, 233, circulating pump, 2311, pressure gauge, 234, water quality detector, 235, temperature detector , 300, controls.

Detailed ways

The present invention will be further described below in conjunction with the examples. Obviously, the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to FIG. 1 , which is an overall schematic diagram of a cyclic antifreeze device 10 provided by the present invention. The circulating antifreeze device 10 is mainly to prevent the air cooler of the off-valve air cooling system of the UHVDC converter valve cooling system from freezing in winter, and a set of externally arranged and flexible circulating antifreeze device 10 is added to the outside air cooling area. Specifically, the circulating antifreeze device 10 generally includes a moving part 100 , a circulating water assembly 200 and a control part 300 .

The moving member 100 includes a fixed plate 110 , a sliding wheel 120 and an armrest 130 . The fixed plate 110 is provided with a water storage tank 210 and a control member 300 for supporting and fixing the water storage tank 210 and the control member 300; the sliding wheel 120 is arranged at the bottom of the fixed plate 110, and the sliding wheel is convenient for moving the entire circulating antifreeze device, which is flexible and convenient The handrail 130 is arranged with one side of the fixed plate 110, the handrail 130 is U-shaped, the two ends of the handrail 130 are fixed on the fixed plate 110, and the handrail 130 is set perpendicular to the fixed plate 110 as a whole, which is convenient for the staff to move the circulating waterproof device .

The circulating water assembly 200 includes a water storage tank and a water inlet member 220 and a water outlet member 230 which are communicated with the water storage tank 210 . The water storage tank 210 is fixed on the moving member and has a heater on its side wall to heat the circulating water. The water inlet member 220 and the water outlet member 230 are respectively connected with the water inlet end and the water outlet end of the DC transmission converter valve cooling system to form heating. water circulation. The control member 300 is installed on the moving member to control the circulation of circulating water and the opening and closing of the heater.

Specifically, the heater includes multiple heaters, and each heater is evenly distributed on the side wall of the water storage tank 210; the multiple heaters are controlled in groups. If the temperature of the circulating water in the water storage tank 210 is low, the control part 300 controls the heater to start; if the temperature is high, the heater is controlled to stop heating. Each heater is controlled in groups and the number of heaters is controlled according to the outlet water temperature of the water storage tank 210 of the device. The heaters are standby for each other. . This function can realize the automatic control of the heater, that is, when the circulating water temperature of the water storage tank 210 is lower than the preset low value, the heater will start automatically, and when the circulating water temperature of the water storage tank 210 is higher than the preset high value When the value is reached, the heater will automatically stop, and this function can ensure that the temperature of the circulating water in the water storage tank 210 is always within the pre-set temperature range.

The water inlet member 220 includes a water inlet pipe 221 and a water inlet filter 222 . The water inlet pipe 221 is communicated with the water storage tank 210, and is used to enter the antifreeze circulating water into the water storage tank 210 through the water inlet pipe 221; the water inlet filter 222 is arranged on the water inlet pipe 221 and is used for filtering the magazines in the circulating water to prevent Affects the water quality of the water storage tank 210 . If the water quality of the water storage tank 210 is affected, the working efficiency of the heater must be affected.

Similarly, the water outlet 230 includes a water outlet pipe 231 and a water storage filter. The water outlet pipe 231 is communicated with the water storage tank 210, and the heating circulating water in the water storage tank 210 enters the external water cooling area of the external cooling air cooler through the water outlet pipe 231. The water outlet filter 232 is arranged on the water outlet pipe 231 for further filtering. Impurities in circulating water improve the quality of circulating water.

Specifically, both the water inlet filter 222 and the water outlet filter 232 are Y-shaped filters. The Y-type filter has the characteristics of advanced structure, small resistance and convenient sewage discharge.

In order to improve the circulating power for circulating water, the water outlet member 230 further includes a circulating pump 233, and the circulating pump 233 is installed on the water outlet pipe 231 to provide circulating power to the circulating antifreeze device. The controller 300 controls the opening and closing of the circulation pump 233 . Specifically, when the liquid level in the water storage tank 210 is high, the liquid level detection signal of the float ball is transmitted to the control member 300, and the control member 300 controls the circulating pump 233 to start; when the liquid level in the water storage tank 210 is low, the control member 300 The circulating pump 233 is controlled to stop. This function can realize the automatic control of the circulation pump 233, that is, when the water level of the water storage tank 210 reaches a certain height, the circulation pump 233 will automatically start, and when the water level of the water storage tank 210 drops to a certain height, the circulation pump 233 will automatically stop. The phenomenon that the water storage tank 210 overflows or is drained can be avoided. A direct-reading pressure gauge 2311 is installed at the inlet and outlet of the circulating pump 233 for real-time monitoring of whether the pressure values at the inlet and outlet of the circulating pump 233 are within the normal operating range of the system.

In some preferred embodiments, a water quality detector 234 is provided between the water outlet filter 232 and the circulating pump 233 to detect the water quality of the circulating water. The water quality detector 234 includes but is not limited to using a conductivity tester to monitor the circulating water quality in real time. , to ensure that the water quality of the internal cold water is qualified.

In other preferred embodiments, a temperature detector 235 is provided between the water outlet filter 232 and the circulating pump 233 to detect the temperature of the circulating water, so as to ensure that the circulating water is heated to a suitable temperature to achieve the purpose of antifreeze.

Further, the top of the water storage tank 210 is provided with a sealing cover 211 to close the water storage tank 210 to prevent foreign objects from entering the water storage tank 210 or to facilitate the cleaning of the water storage tank 210 by staff.

The circulating antifreeze device provided by the invention is used to prevent the external cooling air cooler of the UHVDC converter valve cooling system from freezing in winter, and a set of externally arranged and flexibly used circulating antifreezing device is added to the external water cooling area. The circulating antifreeze device is provided with moving parts, and is heated by circulating water to continuously provide heat to the air cooler outside the valve to prevent it from freezing, and has the advantages of flexible movement, low cost and good antifreeze effect.

Further, the circulating antifreeze device uses the control member 300 to control the circulation of circulating water and the opening and closing of the heater, which not only realizes the automatic control of the heater, that is, when the temperature of the circulating water in the water storage tank 210 is lower than the preset low value. The heater starts automatically. When the circulating water temperature of the water storage tank 210 is higher than the set high value, the heater stops automatically. This function can ensure that the circulating water temperature of the water storage tank 210 is always within the preset temperature range. And realize the automatic control of the circulation pump 233, that is, when the water level of the water storage tank 210 reaches a certain height, the circulation pump 233 starts automatically, and when the water level of the water storage tank 210 drops to a certain height, the circulation pump 233 automatically stops, through this function The phenomenon that the water storage tank 210 overflows or is drained can be avoided; and an intelligently controlled circulating antifreeze device is provided.

By now, those skilled in the art will recognize that, although various exemplary embodiments of the present invention have been illustrated and described in detail herein, the present invention may still be implemented in accordance with the present disclosure without departing from the spirit and scope of the present invention. The content directly determines or derives many other variations or modifications consistent with the principles of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims (10)

1. A circulating antifreeze device, characterized in that, comprising: a moving part for supporting and moving the circulating antifreeze device; A circulating water assembly, comprising a water storage tank and a water inlet and a water outlet communicated with the water storage tank, the water storage tank is fixed on the moving member and a heater is provided on the side wall of the water storage tank to heat the circulating water, The water inlet member and the water outlet member are respectively connected with the water inlet end and the water outlet end of the DC power transmission converter valve cooling system to form a heating circulating water circuit; and A control part is installed on the moving part to control the circulation of the circulating water and the opening and closing of the heater. 2. The circulation antifreeze device as claimed in claim 1, characterized in that: The heater includes a plurality of heaters and is evenly distributed on the side wall of the water storage tank; The plurality of heaters are controlled in groups. 3 . The circulating antifreeze device according to claim 1 , wherein the water inlet member comprises a water inlet pipe communicated with the water storage tank and a water inlet filter arranged on the water inlet pipe. 4 . 4 . The circulating antifreeze device according to claim 3 , wherein the water outlet element comprises a water outlet pipe communicated with the water storage tank and a water outlet filter arranged on the water outlet pipe. 5 . 5. The anti-freezing device according to claim 4, characterized in that: the water outlet further comprises a circulating pump installed on the water outlet pipe to provide circulating power to the anti-freezing device; the control part controls the Open and close the circulation pump. 6 . The circulating antifreeze device according to claim 5 , wherein a water quality detector is arranged between the water outlet filter and the circulating pump to detect the water quality of the circulating water. 7 . 7 . The circulation antifreeze device according to claim 5 , wherein a temperature detector is arranged between the water outlet filter and the circulation pump to detect the temperature of the circulating water. 8 . 8 . The circulatory antifreeze device according to claim 1 , wherein the top of the water storage tank is provided with a sealing cover to close the water storage tank. 9 . 9 . The circulating antifreeze device according to claim 4 , wherein the water inlet filter and the water outlet filter are Y-shaped filters. 10 . 10. The cyclic antifreeze device according to claim 1, characterized in that: the moving part comprises a fixed plate, a sliding wheel arranged on the bottom of the fixed plate and a handrail arranged on one side of the fixed plate; The water storage tank and the control member are arranged on the fixing plate.

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