CN209721812U - A cooling system outside the valve of a converter station with a bell mouth water suction filter device - Google Patents

Abstract

The utility model provides cooling system outside a kind of Converter Station Valve of filter device that absorbs water with horn mouth, including industrial pond, carbon filtration device, counter-infiltration system, desalination pond, buffer pond, spray pump and cooling tower, the output end of the industrial pond is connected to carbon filtration device by industrial water pump, the output end of carbon filtration device is equipped with the first connecting pipe and the second connecting pipe, first connecting pipe is directly connected to the input terminal in desalination pond, second connecting pipe is connect with counter-infiltration system, the output end of counter-infiltration system is connect with desalination pond, the desalination pond is connect by overflow port with buffering pond, the outlet pipeline in the buffering pond is equipped with spray pump, the output end of spray pump is connected to cooling tower.The utility model is used for Converter Station Valve cooling system after can effectively being handled industrial water, guarantee that the water flow of outer cold water is met the requirements, it is ensured that converter station direct current system safe and stable operation has significant environmental protection and water-saving benefit.

Description

A cooling system outside the valve of a converter station with a bell mouth water suction filter device

technical field

The utility model relates to the technical field of power transmission and transformation, in particular to an external valve cooling system of a converter station with a bell mouth water absorption filter device.

Background technique

With the rapid development of my country's power industry, high-voltage direct current transmission has become an important part of my country's power transmission and transformation field, and more and more converter stations are put into operation. The water-cooling system is one of the most important auxiliary systems in the converter station. It is specifically divided into two major parts: the internal water-cooling system and the external water-cooling system. A large amount of heat generated during the operation of the diverter valve, thereby reducing the temperature of the diverter valve. The external water cooling system pumps the external cooling water in the buffer pool into the cooling tower and sprays it on the internal cooling water pipe through the spray pump to achieve the purpose of cooling the internal cooling water. The cooling effect of the external cooling water directly affects the safe operation of the converter valve. At present, whether it is internal cooling water or external cooling water, the water treatment method adopted has obvious defects, and it is not ideal in the actual operation process. After running for a period of time, problems of corrosion, scaling and blockage often occur. At present, the supplementary water of the external cooling circulating water system adopts urban tap water or underground deep well water, and after simple filtration, it is replenished into the external cooling spray pool.

On the other hand, the suction port of the external cold water from the buffer pool to the cooling tower is usually as thick as the water pipe. In order to filter, a layer of filter screen should be laid on the suction port. Due to the small area of the water outlet and the filter screen, it often causes the water suction port to be damaged. Blockage reduces the flow of external cooling water to the cooling tower and affects the spray cooling effect of internal cooling water.

Contents of the invention

Aiming at the deficiencies of the above-mentioned prior art, the utility model provides a cooling system outside the valve of the converter station with a trumpet water suction filter device, which can effectively treat industrial water and use it in the valve cooling system of the converter station to ensure that the external The outlet flow of cold water meets the requirements, ensuring the safe and stable operation of the DC system of the converter station, and has significant environmental protection and water-saving benefits.

The technical solution provided by the utility model: a cooling system outside the valve of the converter station with a bell-mouth water absorption filter device, including an industrial pool, a carbon filter device, a reverse osmosis system, a desalinated water pool, a buffer pool, a spray pump and a cooling tower , the output end of the industrial pool is connected to the carbon filter device through an industrial water pump, the output end of the carbon filter device is provided with a first communication pipe and a second communication pipe, the first communication pipe is directly connected to the input end of the desalination pool, and the second The communication pipe is connected to the reverse osmosis system, and the output end of the reverse osmosis system is connected to the desalinated water pool, and the desalted water pool is connected to the buffer pool through the overflow port, and the outlet pipeline of the buffer pool is provided with a spray pump. The output end is connected to the cooling tower, and the water outlet of the buffer pool is provided with a bell-mouth water suction filter device, and the cooling water filtered by the water suction filter device is sent to the spray pump.

Further, the valve cooling system of the converter station includes three cooling towers connected in parallel, which are respectively connected to the buffer pool through spray pumps.

Further, the buffer pool is also provided with a bypass filter circulation loop for filtering the spray water. The bypass filter circulation loop includes a bypass filter circulation pump, a sand filter and a dosing pump connected in sequence, and then returns to connect to the buffer pool.

Further, the reverse osmosis system includes a security filter, a high-pressure pump and a reverse osmosis device connected in sequence, and the effluent from the reverse osmosis device is filled into the desalinated water pool, and the pipeline of the reverse osmosis system is also provided with a cleaning water tank and a cleaning pump , The impurities filtered out by the reverse osmosis system are discharged to the sewage tank.

Further, a dosing pump is also provided between the outlet pipeline of the second communication pipeline and the reverse osmosis system.

Further, the reverse osmosis system also includes a pressure gauge, a flow meter and a conductivity meter arranged on the pipeline.

Further, the bypass filter circulation loop is also provided with a conductivity meter.

Further, the water-absorbing filter device includes a trumpet-shaped water-absorbing port and a stainless-steel cylindrical water-absorbing filter net arranged along the outside of the mouth, and the water-absorbing filter net is fixed on the water-absorbing horn mouth by buckles.

Further, an inspection manhole is provided on the top of the buffer pool, and an inspection ladder is provided on the side.

Further, the carbon filter device is also provided with a backwash circuit, and the backwash circuit is connected to the desalinated water tank. When the carbon filter device is blocked, the carbon filter device is backwashed with water from the desalted water tank, and the impurities washed out are directly discharged. The carbon filter device is an activated carbon filter.

The water in the industrial pool of the utility model reaches the desalted water pool through a series of processes such as carbon filtration, dosing, and reverse osmosis through an industrial pump. The buffer pool is equipped with a bypass filter circulation loop, and then the spray water is filtered. In addition, the water outlet of the buffer pool is also equipped with a water absorption filter device, which effectively increases the water absorption area of the water suction port and the filter screen along the mouth. , to prevent the blockage of the suction port, to ensure that the outlet flow of the external cooling water meets the requirements, and to ensure the safe and stable operation of the DC system of the converter station. The utility model can effectively use industrial water for the valve cooling system of the converter station through multi-stage filtration and purification treatment, and solve the problems of corrosion, scaling and blockage caused by improper water quality treatment of the cooling water of the converter station, and has significant environmental protection and Water saving benefits.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural representation of buffer tank of the present utility model;

In the figure: 1—industrial pool, 2—carbon filter device, 3—reverse osmosis system, 3-1—security filter, 3-2—high pressure pump, 3-3—reverse osmosis device, 3-4—cleaning water tank, 3-5—cleaning pump, 4—demineralized water pool, 5—buffer pool, 5-1—maintenance manhole, 5-2—maintenance ladder, 6—spray pump, 7—cooling tower, 8—industrial water pump, 9— The first connecting pipe, 10—the second connecting pipe, 11—water suction filter device, 11-1—water suction horn, 11-2—water suction filter, 12—side filter circulation pump, 13—sand filter, 14—dosing Pump A, 15—sewage tank, 16—dosing pump B, 17—backwash circuit.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described further.

As shown in Figure 1 and Figure 2, the cooling system outside the valve of the converter station with the bell-mouth suction filter device includes an industrial pool 1, a carbon filter device 2, a reverse osmosis system 3, a desalinated water pool 4, a buffer pool 5, and a spray Pump 6 and cooling tower 7, the output end of described industrial pool 1 is connected to carbon filter device 2 by industrial water pump 8, and the output end of carbon filter device 2 is provided with first communication pipeline 9 and second communication pipeline 10, the first communication The pipeline 9 is directly connected to the input end of the desalinated water tank 4, the second communication pipeline 10 is connected to the reverse osmosis system 3, the output end of the reverse osmosis system 3 is connected to the desalted water tank 4, and the desalted water tank 4 is connected to the buffer pool 5 through the overflow port connection, the outlet pipeline of the buffer pool 5 is provided with a spray pump 6, and the output end of the spray pump 6 is connected to the cooling tower 7, and the water outlet of the buffer pool 5 is provided with a bell-mouth water absorption filter device 11. The filtered cooling water from the water suction filter device 11 is sent to the spray pump 6 .

The valve cooling system of the converter station includes three cooling towers 7 connected in parallel, which are respectively connected to the buffer pool 5 through spray pumps 6 .

The buffer pool 5 is also provided with a bypass filter circulation loop for filtering the spray water. The bypass filter circulation loop includes a bypass filter circulation pump 12, a sand filter 13 and a dosing pump A14 connected in sequence, and then returns to Connect to buffer tank 5.

The reverse osmosis system 3 includes a security filter 3-1, a high-pressure pump 3-2 and a reverse osmosis device 3-3 connected in sequence, and the effluent from the reverse osmosis device 3-3 is fed into the desalinated water pool 4. The reverse osmosis system The pipeline of 3 is also provided with a cleaning water tank 3-4 and a cleaning pump 3-5, and the impurities filtered out by the reverse osmosis system 3 are discharged to the sewage tank 15.

A dosing pump B 16 is also provided between the outlet pipeline of the second communication pipeline 10 and the reverse osmosis system 3 . The reverse osmosis system 3 also includes a pressure gauge, a flow meter and a conductivity meter arranged on the pipeline. The bypass filter circulation loop is also provided with a conductivity meter.

The water absorption filter device 11 includes a water absorption bell mouth 11-1 and a stainless steel cylindrical water absorption filter 11-2 arranged along the outside of the mouth, and the water absorption filter 11-2 is fixed on the water absorption bell mouth 11-2 by buckles. 1 on. The top of the buffer pool 5 is provided with a maintenance manhole 5-1, and the side is provided with a maintenance ladder 5-2.

The carbon filter device 2 is also provided with a backwash circuit 17, and the backwash circuit 17 is connected to the desalinated water pool 4. When the carbon filter device 2 is blocked, the carbon filter device 2 is backwashed by using the effluent of the desalted water tank 4 to wash out Impurities are discharged directly, and the carbon filter device 2 is an activated carbon filter.

The water suction bell mouth faces the bottom of the buffer pool, the top diameter of the bell mouth is the same as the pipe diameter of the water suction pipeline of the spray pump, the bottom diameter of the bell mouth is set to be twice the top diameter, and the height of the bell mouth is approximately equal to the pipe diameter of the water suction pipeline . The water-absorbing filter is cylindrical, made of stainless steel, fixed on the water-absorbing bell mouth by buckles, detachable for replacement, and the mesh size is 10×10mm.

Working process of the present utility model:

The water source from the waterworks outside the station first goes to the industrial pool (the water in the industrial pool is not only used for water cooling, but also for domestic water and fire water in the station). A series of processes such as osmosis first reach the desalinated water tank, so the water in the desalted water tank is the replenishment water after treatment, and the water level of the desalted water tank rises and naturally overflows to the buffer pool. The water entering the cooling tower is the water of the buffer pool, and the external cooling water recovered from the cooling tower will also return to the buffer pool. Under normal operation, the water in the buffer pool will be consumed naturally and then replenished by the desalinated pool.

After the internal cooling water absorbs heat in the diverter valve and heats up, it is driven by the internal cooling water circulating pump to enter the heat exchange coil in the outdoor closed evaporative cooling tower. The spray water pump pumps water from the buffer pool and sprays it on the surface of the heat exchange coil of the cooling tower. The water vapor formed after the spray water absorbs heat is discharged to the atmosphere through the fan equipped with the cooling tower. During this process, the cooling water in the heat exchange coil will be cooled, and the cooled cooling water will be sent to the diverter valve by the circulating water pump. And so on and on and on.

Three cooling towers are selected for each valve cooling system. Under normal circumstances, all three cooling towers are kept in operation. If a cooling tower fails and stops operating, the other two cooling towers will increase the speed of their cooling fans to ensure the cooling effect. When the outdoor air temperature drops or the load of the diverter valve is small, the precise control of the inlet valve temperature can be realized by adjusting the number of cooling towers and the speed of the variable frequency speed regulating fan. When the cooling tower is running, the spray water evaporates continuously, and the buffer pool automatically replenishes water according to the liquid level. In order to prevent scaling on the outer surface of the heat exchange coil due to long-term water spraying, the spray water needs to be treated, and a side filter circulation loop is set up to use a sand filter to continuously circulate and filter the water in the spray pool.

The above is only a detailed description of the specific embodiments of the present invention, and does not limit the present invention. Any modifications, equivalent replacements and improvements made on the design ideas of the present invention should be included in the present invention. within the scope of protection of utility models.

Claims (10)

1. cooling system outside a kind of Converter Station Valve with horn mouth water suction filter device, it is characterised in that: including industrial pond (1), carbon filtration device (2), counter-infiltration system (3), desalination pond (4), buffering pond (5), spray pump (6) and cooling tower (7), institute The output end for stating industrial pond (1) is connected to carbon filtration device (2) by industrial water pump (8), and the output end of carbon filtration device (2) is equipped with First connecting pipe (9) and the second connecting pipe (10), the first connecting pipe (9) are directly connected to the input of desalination pond (4) End, the second connecting pipe (10) are connect with counter-infiltration system (3), and the output end of counter-infiltration system (3) and desalination pond (4) are even It connects, the desalination pond (4) is connect by overflow port with buffering pond (5), and the outlet pipeline of buffering pond (5) is equipped with Spray pump (6), the output end of spray pump (6) are connected to cooling tower (7), and the water outlet of buffering pond (5) is equipped with loudspeaker Mouth water suction filter device (11), the filtered cooling water by water suction filter device (11) are transported to spray pump (6).

2. the Converter Station Valve outer cooling system according to claim 1 with horn mouth water suction filter device, feature exist In: the outer cooling system of the Converter Station Valve includes three cooling towers (7) in parallel, is connected to buffering by spray pump (6) respectively Pond (5).

3. the Converter Station Valve outer cooling system according to claim 1 with horn mouth water suction filter device, feature exist In: the buffering pond (5) is additionally provided with other filter circulation loop, and for being filtered processing to shower water, the other filter is recycled back to Road includes sequentially connected other filter circulating pump (12), sand filter (13) and dosing pump A (14), returns again to and is connected to buffering pond (5)。

4. the Converter Station Valve outer cooling system according to claim 1 with horn mouth water suction filter device, feature exist In: the counter-infiltration system (3) includes sequentially connected cartridge filter (3-1), high-pressure pump (3-2) and reverse osmosis unit (3- 3) it, fills into desalination pond (4), is additionally provided on the pipeline of the counter-infiltration system (3) clear by the water outlet of reverse osmosis unit (3-3) Water tank (3-4) and cleaning pump (3-5) are discharged into pollution discharge pond (15) by the impurity that counter-infiltration system (3) filters out.

5. the Converter Station Valve outer cooling system according to claim 4 with horn mouth water suction filter device, feature exist In: dosing pump B (16) are additionally provided between the outlet pipeline and counter-infiltration system (3) of second connecting pipe (10).

6. the Converter Station Valve outer cooling system according to claim 4 with horn mouth water suction filter device, feature exist In: the counter-infiltration system (3) further includes the pressure gauge being arranged on pipeline, flowmeter and conductivity table.

7. the Converter Station Valve outer cooling system according to claim 3 with horn mouth water suction filter device, feature exist In: the other filter circulation loop is additionally provided with conductivity table.

8. the Converter Station Valve outer cooling system according to claim 1 with horn mouth water suction filter device, feature exist In: water suction filter device (11) includes the suction for the stainless steel cylinder type being arranged on the outside of water suction horn mouth (11-1) and its opening's edge Water sieve (11-2), the water suction filter screen (11-2) are fixed by snap in water suction horn mouth (11-1).

9. the Converter Station Valve outer cooling system according to claim 1 with horn mouth water suction filter device, feature exist In: it is equipped with inspection manhole (5-1) at the top of the buffering pond (5), side is equipped with maintenance ladder (5-2).

10. the Converter Station Valve outer cooling system according to claim 1 with horn mouth water suction filter device, feature exist In: the carbon filtration device (2) is additionally provided with backwash circuit (17), and the backwash circuit (17) is connected to desalination pond (4), carbon filtration dress When setting (2) blocking, carbon filtration device (2) is backwashed using the water outlet of desalination pond (4), impurity is washed out and is expelled directly out, institute Stating carbon filtration device (2) is active carbon filter.