Outdoor cooling system for distributed phase modifier

Abstract

The outdoor cooling system comprises a primary heat exchange loop and a secondary heat exchange loop, the primary heat exchange loop is arranged on the distributed phase modifier, a heat exchange medium in the primary heat exchange loop is clean air, and a circulating fan and an air filter are arranged on the primary heat exchange loop; the second-stage heat exchange loop is integrated in a box body, the box body is arranged outdoors, a heat exchange medium in the second-stage heat exchange loop is cooling water, the second-stage heat exchange loop comprises a main circulation loop, a pressure stabilizing branch and a water supplementing branch, the pressure stabilizing branch and the water supplementing branch are connected to the main circulation loop, and a circulation water pump and a main filter are arranged on the main circulation loop; the clean air in the first-stage heat exchange loop and the cooling water in the second-stage heat exchange loop are subjected to heat exchange through the air-water heat exchanger, and the cooling water in the second-stage heat exchange loop is subjected to heat exchange with outdoor air through the water-air heat exchanger. Impurities in air can be prevented from entering the distributed phase modifier, and the heat exchange efficiency of the distributed phase modifier is greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of cooling of distributed phase condensers, and in particular relates to an outdoor cooling system for distributed phase condensers. Background Art

[0002] With the rapid development of new energy, the power system's requirements for short-circuit capacity and moment of inertia of new energy stations continue to increase. Distributed phase regulators play an important role in ensuring voltage stability in load centers and solving the transmission and consumption of new energy. Distributed phase regulators are expected to become the standard configuration solution for new energy stations. Distributed phase regulators are synchronous motors without mechanical loads. They generate a lot of heat during operation. Excessive internal temperature will directly affect their performance and reliability. Effective heat dissipation is a key measure to ensure their performance.

[0003] The current cooling methods for distributed phase condensers are mainly open air cooling and closed air-to-air cooling. Open air cooling is to blow air from the environment directly into the distributed phase condenser to take away the heat. This cooling method has high requirements for the quality of the ambient air, otherwise it is easy to bring particulate impurities in the air into the distributed phase condenser; closed air-to-air cooling is to divide the cooling system into two stages. The first stage uses clean air to circulate in a closed manner in the distributed phase condenser to take away the heat of the distributed phase condenser, and then transfer the heat to the ambient air through the air-to-air heat exchanger. This cooling method solves the problem of the first type of air impurities entering the distributed phase condenser, but the heat exchange efficiency of the air-to-air heat exchanger is low, and it cannot efficiently take away the heat of the distributed phase condenser. In addition, currently distributed phase condensers are mainly installed in remote new energy sites. Usually there is no house for the placement of distributed phase condensers and other equipment. Usually they need to be placed outdoors. The high wind and sand environment will force the air-to-air heat exchange fins to thicken, further weakening their heat exchange efficiency. Summary of the invention

[0004] The object of the present invention is to provide an outdoor cooling system for a distributed phase regulator to solve the problem of poor heat exchange efficiency.

[0005] An outdoor cooling system for a distributed phase regulator of the present invention is implemented as follows:

[0006] An outdoor cooling system for a distributed phase regulator, comprising:

[0007] A primary heat exchange loop, which is arranged on the distributed phase regulator, the heat exchange medium in the primary heat exchange loop is clean air, and a circulating fan and an air filter are arranged on the primary heat exchange loop;

[0008] A secondary heat exchange loop is integrated in a box and the box is placed outdoors. The heat exchange medium in the secondary heat exchange loop is cooling water. The secondary heat exchange loop includes a main circulation loop, and a pressure stabilizing branch and a water replenishing branch connected to the main circulation loop. A circulating water pump and a main filter are provided on the main circulation loop.

[0009] The clean air in the primary heat exchange loop and the cooling water in the secondary heat exchange loop are heat exchanged through an air-water heat exchanger, and the cooling water in the secondary heat exchange loop is heat exchanged with outdoor air through a water-air heat exchanger.

[0010] Furthermore, the clean air discharged from the air-water heat exchanger enters the cavity of the distributed phase regulator after passing through the air filter, and then enters the air-water heat exchanger again through the circulating fan;

[0011] The circulating fans are provided with two, and the two circulating fans are connected in parallel;

[0012] The primary heat exchange circuit is also provided with a temperature transmitter I located at the air inlet side of the distributed phase regulator;

[0013] The primary heat exchange circuit is also provided with a pressure transmitter I located on the air inlet side of the air filter.

[0014] Furthermore, the cooling water flowing out of the air-water heat exchanger enters the water-air heat exchanger through a circulating water pump, and then flows out of the water-air heat exchanger and flows back into the air-water heat exchanger through a main filter;

[0015] The circulating water pumps are provided with two, and the two circulating water pumps are connected in parallel;

[0016] The main circulation loop is provided with a pressure transmitter II located at the water inlet side of the main filter, and a temperature transmitter II and a flow transmitter located at the water outlet side of the main filter;

[0017] The main circulation loop is provided with a pressure transmitter III located at the water inlet side of the circulating water pump.

[0018] Furthermore, a buffer tank is provided on the voltage stabilizing branch, and an air compressor is connected to the buffer tank;

[0019] A solenoid valve is installed on the air pipe between the air compressor and the buffer tank;

[0020] The water replenishment branch is connected to the buffer tank, and a water replenishment tank is provided on the water replenishment branch;

[0021] A water replenishment pump and a Y-type filter are installed on the water replenishment pipeline between the water replenishment tank and the buffer tank.

[0022] Furthermore, in the secondary heat exchange loop, the water return port I connected to the water return port of the air-water heat exchanger, the interface I connected to the air-water heat exchanger interface, and the interface II connected to the water-air heat exchanger interface are all arranged on the front side of the box, and the water return port II connected to the water-air heat exchanger water return port is located on the left side of the box. Furthermore, the two circulating water pumps on the secondary heat exchange loop are arranged side by side, the water replenishment tank on the water replenishment branch and the buffer tank on the pressure stabilizing branch are respectively located on the front and rear sides of the right circulating water pump, and the main filter is located on the rear side of the left circulating water pump.

[0023] Furthermore, the water pipe connected to the water inlets of the two circulating water pumps is located at the front side of the circulating water pump and is a horizontally arranged U-shaped pipe I;

[0024] A degassing tank is connected between the U-shaped pipe I and the water return port I. The degassing tank is located in front of the left circulating water pump and arranged side by side with the water replenishment tank;

[0025] The water pipe connected to the water outlets of the two circulating water pumps is located at the rear side of the circulating water pumps and is a vertically arranged U-shaped pipe II;

[0026] The U-shaped pipe II and the interface II are connected via a longitudinal straight pipe located between two circulating water pumps.

[0027] Furthermore, the water outlet of the main filter is connected to the interface I through an L-shaped tube, the longitudinal portion of the L-shaped tube passes through the interior of the box, and a flow transmitter is installed on the longitudinal portion of the L-shaped tube;

[0028] The water inlet of the main filter is connected to the return port II through a horizontal vertical pipe, and butterfly valves are installed between the water inlet of the main filter and the horizontal vertical pipe, between the water outlet of the main filter and the L-shaped pipe, and between the inner end of the horizontal vertical pipe and the L-shaped pipe.

[0029] Furthermore, the water replenishment pipeline extending from the bottom of the water replenishment tank extends backward, is connected to the buffer tank after passing through the water replenishment pump inside the main filter, and the pressure-stabilizing pipeline connected to the buffer tank extends forward and is connected to the U-shaped pipe I connected to the water inlet of the circulating water pump;

[0030] An air compressor connected to the buffer tank is arranged inside the buffer tank.

[0031] Furthermore, a shutter is provided on the side wall of the box body, and a dustproof net is provided on the inner side of the shutter;

[0032] The shutter comprises two layers of staggered blades, wherein the blades located at the outer layer are inverted Y-shaped blades, and the blades located at the inner layer are inclined plate blades with outer edges inclined downward.

[0033] After adopting the above technical solution, the present invention has the following beneficial effects:

[0034] (1) The present invention adds a water cooling system, i.e., a secondary heat exchange circuit, between the closed air cooling of the distributed phase condenser and the external air, which can not only prevent impurities in the air from entering the interior of the distributed phase condenser, but also greatly improve the heat exchange efficiency of the distributed phase condenser;

[0035] (2) The present invention integrates the secondary heat exchange loop into a box and installs it in an external manner, that is, outdoors. Without changing the closed air cooling system (primary heat exchange loop) equipped with the distributed phase regulator, heat exchange between the secondary heat exchange loop and the primary heat exchange loop is achieved, thereby effectively improving the heat dissipation efficiency of the distributed phase regulator and the versatility of the secondary heat exchange loop. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0037] Figure 1 It is a schematic diagram of the principle of an outdoor cooling system for a distributed phase regulator according to a preferred embodiment of the present invention;

[0038] Figure 2 It is a structural diagram of a box (without shutters) where a secondary heat exchange circuit of an outdoor cooling system for a distributed phase regulator is located in a preferred embodiment of the present invention;

[0039] Figure 3 It is a structural diagram from a first perspective of a secondary heat exchange circuit of an outdoor cooling system for a distributed phase regulator according to a preferred embodiment of the present invention;

[0040] Figure 4 is a structural diagram from a second perspective of a secondary heat exchange circuit of an outdoor cooling system for a distributed phase regulator according to a preferred embodiment of the present invention;

[0041] Figure 5 is a top view of a secondary heat exchange circuit of an outdoor cooling system for a distributed phase regulator according to a preferred embodiment of the present invention;

[0042] Figure 6 It is a structural diagram from a third perspective of a secondary heat exchange circuit (without a control cabinet) of an outdoor cooling system for a distributed phase regulator according to a preferred embodiment of the present invention;

[0043] Figure 7 is a cross-sectional view of a shutter for an outdoor cooling system of a distributed phase regulator according to a preferred embodiment of the present invention;

[0044] In the figure: primary heat exchange circuit 1, circulating fan 11, air filter 12, temperature transmitter I 13, pressure transmitter I 14, secondary heat exchange circuit 2, main circulation circuit 21, pressure stabilizing branch 22, water supply branch 23, circulating water pump 24, main filter 25, check valve I 26, pressure transmitter II 27, temperature transmitter II 28, flow transmitter 29, pressure transmitter III 210, buffer tank 211, air compressor 212, solenoid valve 213, liquid level meter 214, water supply tank 215, water supply pump 216, Y-type filter 217, check valve II 218, return water port Ⅰ219, interface Ⅰ220, interface Ⅱ221, water return port Ⅱ222, control cabinet 223, U-shaped pipe Ⅰ224, butterfly valve 225, degassing tank 226, L-shaped elbow 227, U-shaped pipe Ⅱ228, longitudinal straight pipe 229, L-shaped pipe 230, horizontal straight pipe 231, water supply pipeline 232, pressure stabilizing pipeline 233, distributed phase regulator 3, air-water heat exchanger 4, water-air heat exchanger 5, box 6, mounting plate 61, clamp 62, base 63, support frame 64, shutter 65, dust net 66, inverted Y-shaped blade 67, inclined plate blade 68, convection fan 7. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] like Figure 1-7As shown, an outdoor cooling system for distributed phase regulators includes a primary heat exchange loop 1 and a secondary heat exchange loop 2. The primary heat exchange loop 1 is arranged on the distributed phase regulator 3. The heat exchange medium in the primary heat exchange loop 1 is clean air. A circulating fan 11 and an air filter 12 are arranged on the primary heat exchange loop 1. The secondary heat exchange loop 2 is integrated in a box 6 and the box 6 is placed outdoors. The heat exchange medium in the secondary heat exchange loop 2 is cooling water. The secondary heat exchange loop 2 includes a main circulation loop 21, and a voltage stabilizing branch 22 and a water replenishing branch 23 connected to the main circulation loop 21. A circulating water pump 24 and a main filter 25 are arranged on the main circulation loop 21. The clean air in the primary heat exchange loop 1 and the cooling water in the secondary heat exchange loop 2 are heat exchanged through an air-water heat exchanger 4, and the cooling water in the secondary heat exchange loop 2 is heat exchanged with outdoor air through a water-air heat exchanger 5.

[0048] The primary heat exchange loop 1 is directly set on the distributed phase regulator 3 in a closed air-cooled manner, and is arranged in an equipment room or a prefabricated cabin together with the distributed phase regulator 3. The secondary heat exchange loop 2 is integrated in a box 6, and the box 6 is arranged outside the equipment room or the prefabricated cabin in a separate manner, i.e., outdoors.

[0049] The air-water heat exchanger 4 can be arranged in the equipment room or prefabricated cabin where the distributed phase regulator 3 is located, and the water-air heat exchanger 5 is arranged outside the equipment room or prefabricated cabin.

[0050] In order to cool the distributed phase regulator 3, in the primary heat exchange loop 1, the clean air exhausted from the air-water heat exchanger 4 enters the cavity of the distributed phase regulator 3 after passing through the air filter 12, and then enters the air-water heat exchanger 4 again through the circulating fan 11.

[0051] After the clean air is cooled in the distributed phase regulator 3, it will enter the air-water heat exchanger 4 under the action of the circulating fan 11. The clean air will exchange heat with the cooling water in the secondary heat exchange loop 2 in the air-water heat exchanger 4. The cooled clean air will pass through the air filter 12 and enter the distributed phase regulator 3 again for cooling.

[0052] Two circulation fans 11 are provided, and the two circulation fans 11 are connected in parallel.

[0053] The dual circulation fans 11 are arranged in parallel, one for use and the other for standby. When one of the circulation fans 11 fails, the system can still operate normally, thereby improving the reliability of the system.

[0054] In order to monitor the temperature of clean air on the air inlet side of the distributed phase regulator 3 in real time, a temperature transmitter Ⅰ13 located on the air inlet side of the distributed phase regulator 3 is also provided on the primary heat exchange loop 1.

[0055] The circulation fan 11 is equipped with a frequency converter, and the air volume of the circulation fan 11 can be adjusted in real time according to the temperature of the air inlet side of the distributed phase condenser 3 to achieve efficient cooling of the distributed phase condenser 3.

[0056] In order to facilitate real-time monitoring of the pressure of the clean air in the primary heat exchange loop 1 , a pressure transmitter Ⅰ 14 located on the air inlet side of the air filter 12 is also provided on the primary heat exchange loop 1 .

[0057] The air filter 12 can filter out impurities in the air in the primary heat exchange loop 1 to keep it clean and prevent these impurities from entering the distributed phase regulator 3. The setting of the pressure transmitter I14 can detect the pressure of the clean air on the air inlet side of the air filter 12 in real time. When the pressure value exceeds the set value, it indicates that the filter screen of the air filter 12 needs to be replaced, thereby ensuring the cleanliness of the air in the primary heat exchange loop 1 and the normal wind resistance.

[0058] In order to dissipate the heat of the cooling water into the air outside the room, the cooling water flowing out of the air-water heat exchanger 4 enters the water-air heat exchanger 5 through the circulating water pump 24, and then flows out of the water-air heat exchanger 5 and flows back to the air-water heat exchanger 4 through the main filter 25.

[0059] The cooling water that has undergone heat exchange with the clean air in the primary heat exchange loop 1 flows out from the air-water heat exchanger 4, and under the action of the circulating water pump 24, enters the water-air heat exchanger 5 to complete the heat exchange between the cooling water and the outdoor air, that is, to cool the cooling water. The cooled cooling water will pass through the main filter 25 and enter the air-water heat exchanger 4 again to exchange heat with the clean air in the primary heat exchange loop 1.

[0060] Among them, the water-to-air heat exchanger 5 is equipped with a convection fan 7, which blows air to the coil through which the cooling water in the water-to-air heat exchanger 5 passes, thereby transferring the heat of the cooling water in the coil to the outdoor air, thereby cooling the cooling water.

[0061] Two circulating water pumps 24 are provided, and the two circulating water pumps 24 are connected in parallel.

[0062] The dual circulating water pumps 24 are arranged in parallel, one for use and one for backup. When one of the circulating water pumps 24 fails, the system can still operate normally, thereby improving the reliability of the system.

[0063] Preferably, a check valve I 26 is installed on the water outlet side of the two circulating water pumps 24 to ensure the circulation of cooling water.

[0064] In order to monitor the pressure on the water inlet side of the main filter 25 and the temperature on its water outlet side in real time, the main circulation loop 21 is provided with a pressure transmitter Ⅱ27 located on the water inlet side of the main filter 25, and a temperature transmitter Ⅱ28 and a flow transmitter 29 located on the water outlet side of the main filter 25.

[0065] The main filter 25 can filter out impurities in the cooling water. When the pressure on the water inlet side of the main filter 25 exceeds the set value, it indicates that the filter screen of the main filter 25 needs to be cleaned to ensure the smoothness of the cooling water circulation and the cooling effect on the distributed phase regulator 3.

[0066] The flow in the main circulation loop 21 will be set in advance within a normal operating flow range (preset flow range). The flow transmitter 29 can detect the flow changes in the main circulation loop 21 in real time. When the real-time flow exceeds the preset flow range, the cooling system will alarm to remind the staff to perform inspection and maintenance.

[0067] In order to detect the pressure on the water inlet side of the circulating water pump 24 in real time, a pressure transmitter III 210 located on the water inlet side of the circulating water pump 24 is provided on the main circulation loop 21 .

[0068] The pressure on the water inlet side of the circulating water pump 24 needs to be always positive, so as to ensure that the circulating water pump 24 does not experience cavitation, and the pressure transmitter III 210 is used to monitor the pressure changes of the output in real time.

[0069] The pressure stabilizing pipeline 233 of the pressure stabilizing branch 22 is connected to the main circulation loop 21 on the water inlet side of the circulating water pump 24 . A buffer tank 211 is provided on the pressure stabilizing branch 22 , and an air compressor 212 is connected to the buffer tank 211 .

[0070] The pressure stabilizing branch 22 is used to keep the water inlet side of the circulating water pump 24 at a positive pressure at all times. At the same time, the buffer tank 211 can also compensate for the thermal expansion and contraction of the cooling water in the main circulation loop 21 due to temperature changes, thereby ensuring the stability of the overall system pressure.

[0071] When the system pressure is lower than the set value, the air compressor 212 can add air to the buffer tank 211 to increase the pressure to ensure that the system pressure is maintained above the set value.

[0072] In order to facilitate the control of the on-off of the pipeline between the air compressor 212 and the buffer tank 211 , a solenoid valve 213 is installed on the air pipe between the air compressor 212 and the buffer tank 211 .

[0073] Preferably, a liquid level meter 214 is provided on the buffer tank 211 to determine the leakage of the system by detecting the liquid level.

[0074] In order to replenish water for the system, the water replenishment branch 23 is connected to the buffer tank 211 , and a water replenishment tank 215 is provided on the water replenishment branch 23 .

[0075] A water replenishment pump 216 and a Y-type filter 217 are installed on the water replenishment pipeline 232 between the water replenishment tank 215 and the buffer tank 211 .

[0076] When the liquid level in the buffer tank 211 is lower than a set value, the water replenishment pump 216 starts to replenish the cooling water in the water replenishment tank 215 into the buffer tank 211 .

[0077] The provision of the Y-type filter 217 can ensure that the cooling water entering the buffer tank 211 is free of impurities.

[0078] Preferably, a check valve II 218 is provided on the water supply pipeline 232 at the water inlet of the buffer tank 211 to prevent the cooling water in the buffer tank 211 from flowing back into the water supply tank 215 .

[0079] In order to facilitate the connection with the air-water heat exchanger 4 and the water-air heat exchanger 5, in the secondary heat exchange loop 2, the return water port I219 connected to the return water port of the air-water heat exchanger 4, the interface I220 connected to the interface of the air-water heat exchanger 4, and the interface II221 connected to the interface of the water-air heat exchanger 5 are all arranged on the front side of the box body 6, and the return water port II222 connected to the return water port of the water-air heat exchanger 5 is located on the left side of the box body 6.

[0080] Among them, in the two heat exchangers, the cooling water flows from their interfaces to the corresponding return ports, that is, the cooling water in the secondary heat exchange loop 2 enters the air-water heat exchanger 4 from its interface Ⅰ220, exchanges heat with the clean air in the primary heat exchange loop 1, and then flows back to the secondary heat exchange loop 2 from the air-water heat exchanger 4 through the return port Ⅰ219; similarly, the cooling water in the secondary heat exchange loop 2 enters the water-air heat exchanger 5 from its interface Ⅱ221, exchanges heat with the external air, and then flows back to the secondary heat exchange loop 2 from the water-air heat exchanger 5 through the return port Ⅱ222.

[0081] The two interfaces and two water return ports on the secondary heat exchange circuit 2 are flange joints, and a corresponding two-piece mounting plate 61 is provided on the box body 6, that is, semicircular through holes are provided on the opposite sides of the two mounting plates 61 to facilitate the flange joint to extend from the side of the box body 6 and then be connected to the corresponding heat exchanger.

[0082] In order to increase the neatness of the distribution of various components in the box 6 and at the same time reduce the space occupied by the entire box 6, the two circulating water pumps 24 on the secondary heat exchange loop 2 are arranged side by side, the water replenishment tank 215 on the water replenishment branch 23 and the buffer tank 211 on the pressure stabilizing branch 22 are respectively located on the front and rear sides of the right circulating water pump 24, and the main filter 25 is located on the rear side of the left circulating water pump 24.

[0083] Among them, the circulating water pump 24, the water replenishment tank 215 and the buffer tank 211 are all arranged vertically, which can reduce the occupied space.

[0084] The main filter 25 is arranged horizontally, which can reserve space for the installation of the control cabinet 223 above it, thereby further improving the neatness of the arrangement of various components in the entire box body 6.

[0085] In order to realize the parallel connection of the water inlets of the two circulating water pumps 24, the water pipe connected to the water inlets of the two circulating water pumps 24 is located at the front side of the circulating water pump 24 and is a horizontally arranged U-shaped pipe I 224.

[0086] Among them, butterfly valves 225 are installed at both ends of the U-shaped tube I 224 near the water inlet of the circulating water pump 24, and butterfly valves 225 corresponding to the two water outlets of the circulating water pumps 24 are respectively installed on the U-shaped tube II 228. The butterfly valves 225 located on the water inlet and outlet sides of the same circulating water pump 24 are for the convenience of maintenance of the circulating water pump 24.

[0087] Among them, the pressure transmitter III210 is installed on the U-shaped tube I224.

[0088] Preferably, the U-shaped tube I 224 is fixed to the base 63 of the box body 6 through a clamp 62 .

[0089] A degassing tank 226 is connected between the U-shaped pipe I 224 and the water return port I. The degassing tank 226 is located in front of the left circulating water pump 24 and is arranged side by side with the water replenishment tank 215 .

[0090] The degassing tank 226 is provided to discharge the gas in the cooling water.

[0091] The U-shaped tube I 224 is arranged horizontally and passes under the degassing tank 226 and the water replenishing tank 215. The water outlet at the bottom of the degassing tank 226 is connected to the U-shaped tube I 224, and the water inlet on its side is directly connected to the return water port I 219 through an L-shaped elbow 227.

[0092] In order to realize the parallel connection of the water outlets of the two circulating water pumps 24, the water pipe connected to the water outlets of the two circulating water pumps 24 is located at the rear side of the circulating water pump 24 and is a vertically arranged U-shaped pipe II 228.

[0093] The U-shaped tube II 228 and the interface II 221 are connected via a longitudinal straight tube 229 located between the two circulating water pumps 24 .

[0094] The longitudinal straight pipe 229 is arranged horizontally and passes between the two circulating water pumps 24 and above the L-shaped elbow 227, so that the interface II 221 is located above the return water port I 219.

[0095] Preferably, a plurality of support frames 64 are provided on the base 63 of the box body 6 , and the U-shaped tube II 228 and the longitudinal straight tube 229 are fixed on the corresponding support frames 64 through the clamp 62 .

[0096] The pipelines between the two circulating water pumps 24 and the interface II 221 and the water return port I 219 are arranged in a U-shaped structure, which can facilitate the connection of the circulating water pumps 24 and simplify the box body 6.

[0097] The complexity of the internal pipeline makes it neater, reduces the difficulty of subsequent maintenance, and reduces the footprint of the box 6.

[0098] The water outlet of the main filter 25 is connected to the interface I 220 via an L-shaped tube 230 . The longitudinal portion of the L-shaped tube 230 passes through the interior of the box 6 , and a flow transmitter 29 is installed on the longitudinal portion of the L-shaped tube 230 .

[0099] Among them, the temperature transmitter II 28 is installed on the longitudinal part of the L-shaped tube 230.

[0100] The main filter 25 is arranged horizontally with its water outlet side facing backwards, and the interface I 220 is arranged at the front side of the box body 6, so that the straight section length of the longitudinal part of the L-shaped tube 230 can be extended to the maximum extent, thereby ensuring the detection accuracy of the flow transmitter 29.

[0101] The water inlet of the main filter 25 is connected to the return port II 222 through a horizontal straight pipe 231, and butterfly valves 225 are installed between the water inlet of the main filter 25 and the horizontal straight pipe 231, between the water outlet of the main filter 25 and the L-shaped pipe 230, and between the inner end of the horizontal straight pipe 231 and the L-shaped pipe 230.

[0102] The setting of the three butterfly valves 225 here can not only adjust the flow rate of cooling water passing through the main filter 25 and the flow rate of cooling water directly entering the L-shaped tube 230 through the horizontal straight tube 231, but also can close the butterfly valves 225 between the water inlet of the main filter 25 and the horizontal straight tube 231 and between the water outlet of the main filter 25 and the L-shaped tube 230, and open the butterfly valve 225 between the horizontal straight tube 231 and the L-shaped tube 230 at the same time, so as to inspect and maintain the main filter 25.

[0103] Among them, the pressure transmitter II 27 is installed on the horizontal straight pipe 231.

[0104] In order to connect the water replenishment tank 215 with the buffer tank 211, and at the same time connect the buffer tank 211 with the main circulation loop 21, that is, the U-shaped tube I 224, the water replenishment pipeline 232 extending from the bottom of the water replenishment tank 215 extends backward, passes through the water replenishment pump 216 on the inner side of the main filter 25, and is connected to the buffer tank 211. The pressure-stabilizing pipeline 233 connected to the buffer tank 211 extends forward and is connected to the U-shaped tube I 224 connected to the water inlet of the circulating water pump 24.

[0105] Compared with the pipes in the main circulation loop 21, the water supply pipeline 232 and the pressure-stabilizing pipeline 233 have smaller pipe diameters. The water supply pipeline 232 and the pressure-stabilizing pipeline 233 can be arranged close to the base 63 of the box 6 to increase the compactness between the various components in the entire box 6.

[0106] The water replenishment pump 216 is arranged below the horizontal pipe 231, which can save more space.

[0107] An air compressor 212 connected to the buffer tank 211 is disposed inside the buffer tank 211 .

[0108] The air compressor 212 is installed on a support frame 64 for convenient connection with the buffer tank 211 .

[0109] In order to prevent dust, rainwater and the like in the outdoor air from entering the box body 6 , a shutter 65 is provided on the side wall of the box body 6 , and a dustproof net 66 is provided on the inner side of the shutter 65 .

[0110] In order to improve the waterproof effect of the shutter 65, the shutter 65 includes two layers of staggered blades, the blades on the outer layer are inverted Y-shaped blades 67, and the blades on the inner layer are inclined plate blades 68 with outer edges tilted downward.

[0111] Among them, in the outer blades, the bottom height of the upper inverted Y-shaped blade 67 is higher than the top height of the lower inverted Y-shaped blade 67, so that there is a horizontal overlap between the upper and lower adjacent layers of blades. At the same time, combined with the inclined plate blade 68 arranged staggered therewith, it can ensure that rainwater cannot enter the interior of the box 6 from any angle, thereby effectively improving the waterproof effect.

[0112] By setting the shutter 65, i.e. the structure of double blades and dustproof net 66, the box body 6 has a protection level of IP65, so that the secondary heat exchange circuit 2 integrated in the box body 6 can be used in high wind and sand environment in remote areas, and has better versatility.

[0113] The cooling system provided by the present invention transfers the heat generated by the distributed phase regulator 3 to the outdoor environment through step-by-step heat exchange between the primary heat exchange circuit 1, the secondary heat exchange circuit 2 and the external air, thereby achieving efficient heat dissipation of the distributed phase regulator 3. At the same time, it is also suitable for use in harsh environments such as high winds and sand, and there will be no problem of impurities entering the distributed phase regulator 3.

[0114] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An outdoor cooling system for distributed phase condensers, characterized in that: include A primary heat exchange circuit (1) is arranged on the distributed phase regulator (3), the heat exchange medium in the primary heat exchange circuit (1) is clean air, and the primary heat exchange circuit (1) is provided with a circulating fan (11) and an air filter (12); A secondary heat exchange loop (2) is integrated in a box (6) and the box (6) is placed outdoors. The heat exchange medium in the secondary heat exchange loop (2) is cooling water. The secondary heat exchange loop (2) comprises a main circulation loop (21), and a pressure stabilizing branch (22) and a water replenishing branch (23) connected to the main circulation loop (21). The main circulation loop (21) is provided with a circulating water pump (24) and a main filter (25); The clean air in the primary heat exchange circuit (1) and the cooling water in the secondary heat exchange circuit (2) are heat exchanged through an air-water heat exchanger (4), and the cooling water in the secondary heat exchange circuit (2) is heat exchanged with outdoor air through a water-air heat exchanger (5).

2. The outdoor cooling system for distributed phase condenser according to claim 1, characterized in that: The clean air discharged from the air-water heat exchanger (4) passes through an air filter (12) and enters the cavity of the distributed phase regulator (3), and then enters the air-water heat exchanger (4) again through a circulating fan (11); The circulating fans (11) are provided with two, and the two circulating fans (11) are connected in parallel; The primary heat exchange circuit (1) is also provided with a temperature transmitter I (13) located on the air inlet side of the distributed phase regulator (3); The primary heat exchange circuit (1) is also provided with a pressure transmitter I (14) located on the air inlet side of the air filter (12).

3. The outdoor cooling system for distributed phase condenser according to claim 1, characterized in that: The cooling water flowing out of the air-water heat exchanger (4) enters the water-air heat exchanger (5) through the circulating water pump (24), and then flows out of the water-air heat exchanger (5) and flows back into the air-water heat exchanger (4) through the main filter (25); Two circulating water pumps (24) are provided, and the two circulating water pumps (24) are connected in parallel; The main circulation loop (21) is provided with a pressure transmitter II (27) located at the water inlet side of the main filter (25), and a temperature transmitter II (28) and a flow transmitter (29) located at the water outlet side of the main filter (25); The main circulation loop (21) is provided with a pressure transmitter III (210) located on the water inlet side of the circulating water pump (24).

4. The outdoor cooling system for distributed phase condenser according to claim 1, characterized in that: The voltage stabilizing branch (22) is provided with a buffer tank (211), and the buffer tank (211) is connected to an air compressor (212); A solenoid valve (213) is installed on the air pipe between the air compressor (212) and the buffer tank (211); The water replenishment branch (23) is connected to the buffer tank (211), and a water replenishment tank (215) is provided on the water replenishment branch (23); A water replenishment pump (216) and a Y-type filter (217) are installed on the water replenishment pipeline (232) between the water replenishment tank (215) and the buffer tank (211).

5. The outdoor cooling system for distributed phase condenser according to claim 1, characterized in that: In the secondary heat exchange loop (2), a water return port I (219) connected to the water return port of the air-water heat exchanger (4), an interface I (220) connected to the interface of the air-water heat exchanger (4), and an interface II (221) connected to the interface of the water-air heat exchanger (5) are all arranged on the front side of the housing (6), and a water return port II (222) connected to the water return port of the water-air heat exchanger (5) is located on the left side of the housing (6).

6. The outdoor cooling system for distributed phase condenser according to claim 5, characterized in that: The two circulating water pumps (24) on the secondary heat exchange circuit (2) are arranged side by side, the water replenishment tank (215) on the water replenishment branch (23) and the buffer tank (211) on the pressure stabilization branch (22) are respectively located on the front side and the rear side of the right circulating water pump (24), and the main filter (25) is located on the rear side of the left circulating water pump (24).

7. The outdoor cooling system for distributed phase condenser according to claim 6, characterized in that: The water pipe connected to the water inlets of the two circulating water pumps (24) is located at the front side of the circulating water pumps (24) and is a horizontally arranged U-shaped pipe I (224); A degassing tank (226) is connected between the U-shaped pipe I (224) and the water return port I (219), and the degassing tank (226) is located in front of the left circulating water pump (24) and arranged side by side with the water replenishment tank (215); The water pipe connected to the water outlets of the two circulating water pumps (24) is located at the rear side of the circulating water pumps (24) and is a vertically arranged U-shaped pipe II (228); The U-shaped tube II (228) is connected to the interface II (221) via a longitudinal straight tube (229) located between the two circulating water pumps (24).

8. The outdoor cooling system for distributed phase condenser according to claim 6, characterized in that: The water outlet of the main filter (25) is connected to the interface I (220) via an L-shaped tube (230), the longitudinal portion of the L-shaped tube (230) passes through the interior of the box (6), and a flow transmitter (29) is installed on the longitudinal portion of the L-shaped tube (230); The water inlet of the main filter (25) is connected to the water return port II (222) via a horizontal straight pipe (231), and butterfly valves (225) are respectively installed between the water inlet of the main filter (25) and the horizontal straight pipe (231), between the water outlet of the main filter (25) and the L-shaped pipe (230), and between the inner end of the horizontal straight pipe (231) and the L-shaped pipe (230).

9. The outdoor cooling system for distributed phase condenser according to claim 6, characterized in that: A water replenishment pipeline (232) extending from the bottom of the water replenishment tank (215) extends backward, passes through a water replenishment pump inside the main filter (25), and is connected to the buffer tank (211); a pressure-stabilizing pipeline (233) connected to the buffer tank (211) extends forward, and is connected to a U-shaped pipe I (224) connected to the water inlet of the circulating water pump (24); An air compressor (212) connected to the buffer tank (211) is arranged inside the buffer tank (211).

10. The outdoor cooling system for distributed phase condenser according to claim 5, characterized in that: A shutter (65) is provided on the side wall of the box body (6), and a dustproof net (66) is provided on the inner side of the shutter (65); The shutter (65) comprises two layers of staggered blades, wherein the blades located in the outer layer are inverted Y-shaped blades (67), and the blades located in the inner layer are inclined plate blades (68) with outer edges inclined downward.

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