CN212064744U - Refrigerating system and data center - Google Patents

Abstract

The present application relates to a refrigeration system and a data center, and relates to the technical field of cooling of data centers which can be used for (including but not limited to) cloud computing, cloud storage, big data computing, deep learning, image processing and other applications. The refrigeration system includes: the cooling tower is provided with a liquid collecting disc, and the bottom of the liquid collecting disc is provided with a liquid supplementing port, so that the end part of a liquid supplementing pipe extends into the first cooling liquid of the liquid collecting disc from the liquid supplementing port and is immersed in the first cooling liquid of the liquid collecting disc; the cooling device is provided with a liquid inlet and a liquid outlet and is arranged on the object to be cooled so as to exchange heat with the object to be cooled; the first heat tracing pipe is provided with a first section, a second section and a third section which are connected in sequence, and the second section of the first heat tracing pipe is arranged at the bottom of the liquid collecting disc so that the second cooling liquid of the cooling device can radiate heat to the first cooling liquid in the liquid collecting disc. The application provides a technical scheme can prevent that the moisturizing pipe from freezing winter, is favorable to the winter moisturizing of cooling tower.

Description

Refrigerating system and data center

Technical Field

The present application relates to the field of cooling technologies, and in particular, to a refrigeration system and a data center.

Background

The cooling tower is a device which generates steam by utilizing cold and heat exchange after cooling liquid is in flowing contact with air, and the steam is volatilized to take away heat to realize heat dissipation. The cooling tower is usually provided with a liquid replenishing port to replenish the evaporated cooling liquid. However, since the cooling tower is usually installed outdoors, when the outdoor temperature is too low in winter, the fluid infusion port of the cooling tower is likely to freeze and fluid infusion is not possible.

SUMMERY OF THE UTILITY MODEL

The application provides a refrigeration system and a data center.

According to an aspect of the present application, there is provided a refrigeration system, which may include:

the cooling tower is provided with a liquid collecting disc, and the bottom of the liquid collecting disc is provided with a liquid supplementing port, so that the end part of a liquid supplementing pipe extends into the first cooling liquid of the liquid collecting disc from the liquid supplementing port and is immersed in the first cooling liquid of the liquid collecting disc;

the cooling device is provided with a liquid inlet and a liquid outlet and is arranged on the object to be cooled so as to exchange heat with the object to be cooled;

the first heat tracing pipe is provided with a first section, a second section and a third section which are connected in sequence, the input end of the first section of the first heat tracing pipe is connected with the liquid outlet of the cooling device, the output end of the third section of the first heat tracing pipe is connected with the liquid inlet of the cooling device, and the second section of the first heat tracing pipe is arranged at the bottom of the liquid collecting disc so that the second cooling liquid of the cooling device can radiate the first cooling liquid in the liquid collecting disc.

In one embodiment, the cooling tower is provided with a packing layer, the packing layer is positioned above the liquid collecting disc, and the middle part of the third section of the first heat tracing pipe is provided with a three-way valve; the refrigeration system further includes:

the second heat tracing pipe is provided with a first section and a second section which are connected in sequence, the input end of the first section of the second heat tracing pipe is respectively connected with the output end of the second section of the first heat tracing pipe and the input end of the third section of the first heat tracing pipe, and the output end of the second section of the second heat tracing pipe is connected with the third section of the first heat tracing pipe through the three-way valve; the first section of the second heat tracing pipe is arranged in the packing layer.

In one embodiment, the second section of the first heat trace pipe forms an S-shaped bend at the bottom of the drip pan, and the first section of the second heat trace pipe forms an S-shaped bend inside the packing layer.

In one embodiment, the cooling tower has an outdoor liquid inlet pipe and an outdoor liquid outlet pipe, and the refrigeration system further comprises:

the first liquid inlet of the heat exchanger is connected with the liquid outlet of the cooling device, the first liquid outlet of the heat exchanger is connected with the liquid inlet of the cooling device, the second liquid inlet of the heat exchanger is connected with the output end of the outdoor liquid outlet pipe, and the second liquid outlet of the heat exchanger is connected with the input end of the outdoor liquid inlet pipe.

In one embodiment, the input end of the outdoor liquid outlet pipe is connected with the bottom of the liquid collecting tray, the part of the first section of the first heat tracing pipe close to the output end is tightly attached to the outdoor liquid outlet pipe in parallel, and the part of the third section of the first heat tracing pipe close to the input end is tightly attached to the outdoor section of the liquid supplementing pipe in parallel.

In one embodiment, the cooling tower is provided with a liquid distributor, the liquid distributor is positioned above the packing layer, and the liquid distributor is connected with the output end of the outdoor liquid inlet pipe; the second section of the second heat tracing pipe is tightly attached to the outdoor liquid inlet pipe and arranged in parallel.

In one embodiment, the refrigeration system further comprises:

the first water pump is arranged between the liquid outlet of the cooling device and the input end of the first section of the first heat tracing pipe and the first liquid inlet of the heat exchanger;

and the second water pump is arranged between the second liquid inlet of the heat exchanger and the output end of the outdoor liquid outlet pipe.

In one embodiment, the refrigeration system further comprises:

the first stop valve is arranged on the first section of the first heat tracing pipe and close to the input end;

the second stop valve is arranged on the fourth section of the first heat tracing pipe and close to the output end;

and the drain valve is arranged at the lowest position of the first heat tracing pipe.

In one embodiment, the end of the fluid replacement tube is provided with a fluid replacement member comprising:

the fluid infusion valve is connected with the end part of the fluid infusion pipe and is provided with a control contact so as to control the opening and closing degree of the fluid infusion valve;

and a first end of the control lever is in contact with the control contact, and a second end of the control lever is connected with a floating ball which floats on the liquid level of the first cooling liquid of the liquid collecting tray.

In one embodiment, the control lever comprises a support, a connecting lever and a pull rod; wherein, the first end of the supporting piece is arranged on the liquid replenishing pipe, and the second end of the supporting piece is connected with the middle section of the connecting lever; the first end of the connecting lever is contacted with the control contact, the second end of the connecting lever is connected with the pull rod, and the floating ball is fixed on the pull rod.

In one embodiment, the second end of the connecting lever is provided with a plurality of positioning holes.

In one embodiment, the floating ball is inserted on the pull rod, and the pull rod is provided with a limiting thread so as to adjust the position of the floating ball on the pull rod through a limiting nut.

In one embodiment, the float ball is ellipsoidal.

In one embodiment, the length between the second end of the support and the first end of the connecting lever is less than the length between the second end of the support and the second end of the connecting lever.

According to an aspect of the present application, there is provided a data center including: the refrigeration system of any of the above embodiments.

According to the refrigeration system and the data center, the cooling device can prevent the liquid supplementing pipe from freezing through the heat dissipation of the first heat tracing pipe to the first cooling liquid in the liquid collecting disc, and the cooling tower is favorable for supplementing water in winter.

It should be understood that what is described in this summary section is not intended to limit key or critical features of the embodiments of the application, nor is it intended to limit the scope of the application. Other features of the present application will become apparent from the following description.

Drawings

The above and other features, advantages and aspects of various embodiments of the present application will become more apparent by referring to the following detailed description when taken in conjunction with the accompanying drawings. In the drawings, like or similar reference characters designate like or similar elements, and wherein:

FIG. 1 is a schematic diagram of one configuration of a refrigeration system according to the present application;

FIG. 2 is a schematic layout of a second section of the first heat trace pipe according to the present application;

FIG. 3 is a schematic diagram of another configuration of a refrigeration system according to the present application;

FIG. 4 is a schematic view of a first heat trace pipe welded in parallel with an outdoor liquid outlet pipe according to the present application;

FIG. 5 is a schematic view of the deployment of a fluid replacement tube and a fluid replacement member according to the present application;

FIG. 6 is a schematic structural view of a fluid replacement component according to the present application;

FIG. 7 is a partial schematic view of a fluid replacement component according to the present application.

Description of reference numerals:

100-a cooling tower;

110-a drip pan; 111-fluid infusion port;

120-a liquid supplementing pipe;

130-a filler layer;

140-outdoor liquid inlet pipe;

141-a thermally insulating protective layer;

150-outdoor liquid outlet pipe;

160-liquid distributor;

170-air inlet;

180-a fan;

190-a fluid infusion component;

191-a liquid replenishing valve; 191A-control contact;

192-a control lever; 192A-support; 192B-connecting lever; 192C-pull rod; 192D-locating holes; 192E-a limit nut; 192F-convex; 192O-fulcrum;

193-floating ball;

200-a cooling device;

210-a liquid inlet; 211-a first water pump;

220-a liquid outlet;

300-a first heat trace pipe;

310-a first section;

311-first stop valve; 314-a drain valve;

320-a second section;

330-third section;

331-a first three-way valve; 332-a second shut-off valve;

400-a second heat tracing pipe;

410-a first segment; 411-a second three-way valve;

420-a second segment;

500-a heat exchanger;

510-a first inlet;

520-a first liquid outlet;

530-a second liquid inlet;

531-second water pump;

540-second outlet port.

Detailed Description

When the outdoor environment temperature is too low in winter, the outdoor pipeline of the cooling tower is usually provided with electric tracing and wrapped with heat insulation cotton so as to ensure that the temperature of cooling liquid circulating in the cooling tower can be higher than 0 ℃, and further prevent the circulation pipeline of the cooling tower from freezing. However, since the fluid infusion port is located inside the cooling tower and the float valve is basically provided at the fluid infusion port, on one hand, the float valve has a complicated structure and is inconvenient to provide electric tracing and heat insulation cotton, and on the other hand, even if the electric tracing can be provided at the fluid infusion port and the float valve, the fluid infusion port and the float valve are located below the packing layer and are flushed with the coolant flowing down the laminar flow for a long time, resulting in electric tracing damage (for example, electric leakage, short circuit, or the like). Thus, the liquid supplementing port of the cooling tower is very easy to freeze and cannot supplement liquid.

In view of this, the application provides a refrigerating system, through set up first heat tracing pipe in the liquid collecting tray bottom of cooling tower to submerge the fluid infusion pipe in the first coolant liquid in the liquid collecting tray, so that the heat that first heat tracing pipe dispels can be absorbed by first coolant liquid, and then dispels the heat to the fluid infusion pipe, avoids the fluid infusion pipe to take place to freeze, is favorable to the moisturizing of cooling tower winter.

The following description of the exemplary embodiments of the present application, taken in conjunction with the accompanying drawings, includes various details of the embodiments of the application for the understanding of the same, which are to be considered exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present application. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

Fig. 1 shows a schematic diagram of a refrigeration system according to the present application. As shown in fig. 1, the refrigeration system may include: a cooling tower 100, a cooling device 200, and a first heat trace pipe 300 (the line segment in fig. 1 indicates the first heat trace pipe).

The cooling tower 100 has a drip pan 110, and the bottom of the drip pan 110 is provided with a fluid replenishment port 111 so that the end of the fluid replenishment pipe 120 protrudes from the fluid replenishment port 111 and is immersed in the first cooling fluid of the drip pan 110.

The cooling device 200 has a liquid inlet 210 and a liquid outlet 220, and the cooling device 200 is disposed on the object to be cooled to exchange heat with the object to be cooled. For example, the cooling device 200 may be a liquid cooling system of a server, and the object to be cooled may be a server in a machine room.

The first heat trace pipe 300 has a first section 310, a second section 320 and a third section 330 which are connected in sequence, an input end of the first section 310 of the first heat trace pipe 300 is connected with the liquid outlet 220 of the cooling device 200, an output end of the third section 330 of the first heat trace pipe 300 is connected with the liquid inlet 210 of the cooling device 200, and the second section 320 of the first heat trace pipe 300 is arranged at the bottom of the liquid collecting tray 110, so that the second cooling liquid (an arrow with a line segment in fig. 1 indicates a circulating flow direction of the second cooling liquid) of the cooling device 200 radiates heat to the first cooling liquid in the liquid collecting tray 110.

Wherein the first cooling liquid may be cooling water, and the second cooling liquid may be chilled water that circulates in the cooling tower 100, and the chilled water circulates in the object to be cooled; the return water temperature of the cooling water is lower than that of the chilled water, for example, the return water temperature of the cooling water may be 18 ℃, and the return water temperature of the chilled water may be 21 ℃.

The replenishment pipe 120 may be connected to a municipal water pipe to replenish the inside of the drip pan 110 of the cooling tower 100 with municipal water.

In one example, the second section of the first heat trace pipe 300 is spaced apart from the bottom of the drip pan 110 to clean the bottom of the drip pan 110.

When the refrigeration system works, the cooling device 200 outputs the high-temperature second cooling liquid which exchanges heat with the object to be cooled to the first heat tracing pipe 300, the second cooling liquid flows through the second section of the first heat tracing pipe 300 and then radiates heat to the first cooling liquid in the liquid collecting tray 110 of the cooling tower 100, so that the first cooling liquid in the liquid collecting tray 110 absorbs heat and is heated up, the first cooling liquid can radiate heat to the liquid supplementing pipe 120 immersed in the first cooling liquid, the temperature of the liquid supplementing pipe 120 is higher than 0 ℃, and the freezing of the liquid supplementing pipe 120 is avoided.

According to the refrigeration system of the present application, on one hand, the cooling device 200 can prevent the liquid replenishing pipe 120 from freezing by dissipating heat to the first cooling liquid in the liquid collecting tray 110 through the first heat tracing pipe 300, which is beneficial to replenishing water to the cooling tower 100 in winter; on the other hand, because the temperature of the first cooling liquid is lower than the temperature of the second cooling liquid, the cooling device 200 can utilize the first heat tracing pipe 300 to perform efficient heat exchange between the second cooling liquid and the first cooling liquid, so that the cold energy of the first cooling liquid is fully utilized to reduce the temperature of the second cooling liquid, and the cooling efficiency of the object to be cooled is favorably improved.

It should be noted that, in order to avoid freezing at the fluid infusion port in the prior art, an anti-freezing method is to open a drain valve of the cooling tower so as to keep the cooling fluid in the circulating pipeline of the cooling tower in a flowing state, which causes waste of the cooling fluid and very low utilization efficiency of the cooling fluid; the other anti-freezing mode is that fresh air is heated by a heating element and then input into a cooling tower, so that energy consumption is increased. The refrigeration system of the application transmits the heat dissipated from the object to be cooled to the liquid supplementing pipe 120 through the cooling device 200 and the first heat tracing pipe 300, so that the freezing of the liquid supplementing pipe 120 is prevented, the waste of cooling liquid can be avoided, the use of high-energy-consumption elements such as heating elements and electric tracing can be eliminated, and the refrigeration system has the advantages of energy conservation, greenness and high efficiency.

In one embodiment, as shown in fig. 2, the second section 320 of the first heat trace pipe 300 may form an S-shaped bend at the bottom of the drip pan 110 to increase the length of the second section 320 of the first heat trace pipe 300 in the drip pan 110, so that sufficient heat exchange between the second cooling liquid and the first cooling liquid in the drip pan 110 may be achieved, and the heat exchange efficiency may be improved.

In one embodiment, as shown in fig. 3, the cooling tower 100 has a packing layer 130, the packing layer 130 is located above the liquid collecting pan 110, and the middle of the third section 330 of the first heat trace pipe 300 is provided with a first three-way valve 331; the refrigeration system may further include: a second heat trace pipe 400 (a portion of one dot with a line segment in fig. 3 indicates the second heat trace pipe 400, and a dot with an arrow and a line segment mark indicate the flow direction of the second coolant in the second heat trace pipe 400); the second heat trace pipe 400 has a first section 410 and a second section 420 which are connected in sequence, the input end of the first section 410 of the second heat trace pipe 400 is respectively connected with the output end of the second section 320 of the first heat trace pipe 300 and the input end of the third section 330 of the first heat trace pipe 300 through a second three-way valve 411, and the output end of the second section 420 of the second heat trace pipe 400 is connected with the third section 330 of the first heat trace pipe 300 through a first three-way valve 331; the first section 410 of the second heat trace pipe 400 is disposed in the packing layer 130.

In one example, the input end of the second heat trace pipe 400 is located at the bottom of the packing layer 130, and the output end of the second heat trace pipe 400 is located at the top of the packing layer 130, so that the second cooling liquid flowing through the second heat trace pipe 400 and the first cooling liquid flowing through the packing layer 130 can form a convection current, and the heat exchange efficiency can be improved.

When the first cooling liquid is output to the liquid collecting tray 110 through the packing layer 130, the fresh air is input into the cooling tower 100 from the air inlet 170 between the packing layer 130 and the liquid collecting tray 110 and is extracted by the fan 180 at the top of the packing layer 130, so that the first cooling liquid flowing through the packing layer 130 can exchange heat with the fresh air. However, when the outdoor environment temperature is too low in winter, the first cooling liquid passes through the packing layer 130 to exchange heat with the low-temperature fresh air sufficiently, and ice is easily formed between the packing layer 130 and the liquid collecting tray 110.

In this embodiment, the input end of the first section 410 and the output end of the second section 420 of the second heat trace pipe 400 are respectively connected with the first heat trace pipe 300 through the second three-way valve 411 and the first three-way valve 331, and the first section 420 of the second heat trace pipe 400 is disposed in the packing layer 130, so that the second coolant can radiate heat to the first coolant flowing through the packing layer 130, and the ice hang formed between the packing layer 130 and the liquid collecting tray 110 after the first coolant radiates heat through the packing layer 130 is avoided, so as to ensure the normal operation of the cooling tower 100.

In one embodiment, as shown in FIG. 3, the first section 410 of the second heat trace pipe 400 forms an S-shaped bend inside the packing layer 130 to increase the heat exchange efficiency between the second coolant and the first coolant flowing through the packing layer 130.

In one embodiment, as shown in FIG. 3, where the cooling tower 100 has an outdoor liquid inlet pipe 140 and an outdoor liquid outlet pipe 150, the refrigeration system may further include: the heat exchanger 500 (in the figure, solid lines indicate connecting pipes between the heat exchanger 500 and the cooling tower 100, and solid lines with arrows indicate the flow direction of the first cooling liquid). The first liquid inlet 510 of the heat exchanger 500 is connected to the liquid outlet 220 of the cooling device 200, the first liquid outlet 520 of the heat exchanger 500 is connected to the liquid inlet 210 of the cooling device 200, the second liquid inlet 530 of the heat exchanger 500 is connected to the output end of the outdoor liquid outlet pipe 150, and the second liquid outlet 540 of the heat exchanger 500 is connected to the input end of the outdoor liquid inlet pipe 140 (two dotted and dashed lines in fig. 3 indicate connecting pipes between the cooling device 200 and the heat exchanger 500).

The outdoor liquid inlet pipe 140 of the cooling tower 100 may be disposed at the top of the cooling tower 100, and the outdoor liquid outlet pipe 150 may be disposed at the bottom of the liquid collecting tray 110, so that the heat exchanger 500 inputs the first cooling liquid into the cooling tower 100 from the top of the cooling tower 100 through the second liquid outlet 540 and the outdoor liquid inlet pipe 140, and then the first cooling liquid flows into the liquid collecting tray 110 after being cooled by heat dissipation of the packing layer 130, and is output to the heat exchanger 500 through the outdoor liquid outlet pipe 150 and the second liquid inlet 530 disposed at the bottom of the liquid collecting tray 110, thereby realizing circulation flow of the first cooling liquid; the first inlet 510 and the first outlet 520 of the heat exchanger 500 are respectively connected with the outlet 220 and the inlet 210 of the cooling device 200, so that the second cooling liquid in the cooling device 200 circularly flows to the heat exchanger 500 to exchange heat with the first cooling liquid.

In the present embodiment, since the second coolant can exchange heat with the first coolant flowing through the cooling tower 100 through the first heat tracing pipe 300 and the second heat tracing pipe 400, the cold energy of the first coolant can be fully utilized, the temperature of the second coolant flowing through the heat exchanger 500 can be reduced, and the load of the heat exchanger 500 can be reduced.

In one embodiment, as shown in fig. 3, the input end of the outdoor liquid outlet pipe 150 is connected to the bottom of the liquid collecting tray 110, a portion of the first heat trace pipe 300 near the output end is disposed in parallel closely to the outdoor liquid outlet pipe 150, and a portion of the third heat trace pipe 300 near the input end is disposed in parallel closely to the outdoor section of the liquid replenishing pipe 120.

In one example, as shown in fig. 4, a portion of the first section of the first heat trace pipe 300 near the output end may be welded in parallel with the outdoor outlet pipe 150 by means of welding. The welding mode may be spot welding or other types of welding, and the application does not limit the welding mode of the first heat trace pipe 300 as long as the first heat trace pipe 300 can be arranged in parallel with the outdoor sections of the outdoor liquid outlet pipe 150 and the liquid supplementing pipe 120.

Referring to fig. 4, a portion of the third section of the first heat trace pipe 300 near the input end may also be welded in parallel with the outdoor section of the second fluid infusion pipe 120.

In one example, referring to fig. 4, the welded first heat trace pipe 300 and the outdoor liquid outlet pipe 150 and the outdoor section of the first heat trace pipe 300 and the liquid supplementing pipe 120 may be further provided with a heat insulation protection layer 141 for isolation and protection.

Based on this, the first heat tracing pipe 300 is arranged in parallel to the outdoor sections of the outdoor liquid outlet pipe 150 and the liquid supplementing pipe 120 of the cooling tower 100, so that the outdoor sections of the outdoor liquid outlet pipe 150 and the liquid supplementing pipe 120 of the cooling tower 100 are in close contact with the first heat tracing pipe 300, and the second cooling liquid is used for dissipating heat to the outdoor sections of the outdoor liquid outlet pipe 150 and the liquid supplementing pipe 120 of the cooling tower 100, so as to avoid freezing; in addition, the use of electric tracing can be omitted, so that the energy consumption is reduced.

In one embodiment, as shown in fig. 3, the cooling tower 100 has a liquid distributor 160, the liquid distributor 160 is located above the packing layer 130, and the liquid distributor 160 is connected to the output end of the outdoor liquid inlet pipe 140; the second section 420 of the second heat trace pipe 400 is closely arranged in parallel to the outdoor liquid inlet pipe 140.

The liquid distributor 160 is connected to the output end of the outdoor liquid inlet pipe 140, so that the first cooling liquid is uniformly sprayed into the packing layer 130 through the liquid distributor 160, thereby efficiently dissipating heat of the first cooling liquid. Referring to fig. 4, the second section of the second heat trace pipe 400 may also be welded in parallel with the outdoor liquid inlet pipe 140 of the cooling tower 100, and a heat insulation protection layer 141 is provided to prevent the outdoor liquid inlet pipe 140 of the cooling tower 100 from freezing.

In one embodiment, as shown in fig. 3, the refrigeration system may further include: a first water pump 211 and a second water pump 531.

The first water pump 211 is disposed between the liquid outlet 220 of the cooling device 200 and the input end of the first section of the first heat trace pipe 300 and the first liquid inlet 510 of the heat exchanger 500, so that the second cooling liquid circularly flows in the cooling device 200, the heat exchanger 500, the first heat trace pipe 300 and the second heat trace pipe 400.

The second water pump 531 is disposed between the second inlet 530 of the heat exchanger 500 and the outlet of the outdoor outlet pipe 150, so as to output the first cooling liquid in the liquid collecting tray 110 at the bottom of the cooling tower 100 to the liquid distributor 160 at the top of the heat exchanger 500 through the heat exchanger 500, so as to circulate the first cooling liquid.

In one embodiment, as shown in fig. 3, the refrigeration system may further include: and a first cut-off valve 311 and a second cut-off valve 332, the first cut-off valve 311 being disposed on a first section of the first heat trace pipe 300 at a position near the input end, and the second cut-off valve 332 being disposed on a fourth section of the first heat trace pipe 300 at a position near the output end.

Thus, by opening the first stop valve 311 and the second stop valve 332, the first heat trace pipe 300 and the second heat trace pipe 400 can be used for performing anti-freezing protection on the liquid supplementing pipe 120 and the outdoor liquid inlet pipe 140 and the outdoor liquid outlet pipe 150 of the cooling tower 100, so as to avoid freezing; by closing the first stop valve 311 or the second stop valve 332, the first heat trace pipe 300 and the second heat trace pipe 400 can be stopped to be used in non-low temperature seasons, and the overheating of the outdoor sections of the liquid collecting tray 110, the packing layer 130, the outdoor liquid inlet pipe 140, the outdoor liquid outlet pipe 150, and the water replenishing pipe of the cooling tower 100 is avoided.

In one embodiment, as shown in fig. 3, the refrigeration system may further include: and a drain valve 314, wherein the drain valve 314 can be arranged at the lowest position of the first heat trace pipe 300 so as to clean the second cooling liquid.

In one embodiment, as shown in fig. 5 and 6, the end of the fluid infusion tube 120 is provided with a fluid infusion member 190, and the fluid infusion member 190 may include: a fluid replenishing valve 191 and a control lever 192.

The liquid supplementing valve 191 is connected with the end part of the liquid supplementing pipe 120, and the liquid supplementing valve 191 is provided with a control contact 191A so as to control the opening degree of the liquid supplementing valve 191; when the control contact 191A pops up, the liquid supplementing valve 191 is completely opened; when the control contact 191A is gradually pressed down, the opening and closing degree of the liquid supplementing valve 191 is gradually reduced; when control contact 191A is depressed to the fully closed position, then fluid replacement valve 191 is fully closed.

The first end of the control lever 192 contacts the control contact 191A, the second end of the control lever 192 is connected to a float 193, and the float 193 floats on the surface of the first coolant in the drip pan 110. When no first cooling liquid exists in the liquid collecting tray 110, the floating ball 193 and the second end of the control lever 192 sink due to self gravity, the first end of the control lever 192 tilts upwards, so that the control contact 191A pops up, the liquid supplementing valve 191 is completely opened, and the liquid supplementing pipe 120 performs full liquid supplementing to the liquid collecting tray 110; when the liquid level of the first cooling liquid in the drip pan 110 gradually exceeds the preset lowest liquid level, the floating ball 193 drives the second end of the control lever 192 to move upwards under the action of buoyancy force, so that the first end of the control lever 192 starts to control the control contact 191A to be closed; when the liquid level of the first cooling liquid in the liquid collecting tray 110 gradually rises, the floating ball 193 drives the second end of the control lever 192 to continuously move upwards under the action of buoyancy, the first end of the control lever 192 continuously moves downwards to apply pressure to the control contact 191A, the opening degree of the liquid supplementing valve 191 is gradually reduced, and the liquid supplementing amount of the liquid supplementing pipe 120 in the liquid collecting tray 110 is gradually reduced; when the liquid level of the first cooling liquid in the liquid collecting tray 110 rises to the preset highest liquid level, the floating ball 193 drives the first end of the control lever 192 to move downwards, so that the control contact 191A completely closes the liquid supplementing valve 191, and the liquid supplementing pipe 120 stops supplementing liquid.

Based on this, the liquid replenishing member 190 can be used to control the liquid replenishing pipe 120 immersed in the first cooling liquid to perform automatic liquid replenishing.

Note that, since the fluid replacement port 111 of the conventional cooling tower 100 is located substantially above the cooling fluid in the drip pan 110 and the fluid replacement port 111 cannot be immersed in the cooling fluid in the drip pan 110, the fluid replacement port 111 is usually provided with a float 193 valve to control the fluid replacement of the fluid replacement port 111. In the present application, the fluid infusion tube 120 needs to be immersed in the first cooling fluid in the liquid collection tray 110, and the fluid infusion member 190 is disposed to facilitate automatic fluid infusion control of the fluid infusion tube 120.

In one embodiment, as shown in fig. 6, control lever 192 includes a support 192A, a connecting lever 192B, and a pull rod 192C; wherein, the first end of the supporting member 192A is disposed on the liquid replenishing pipe 120, and the second end of the supporting member 192A is connected with the middle portion of the connecting lever 192B to form a fulcrum 192O of the connecting lever 192B; the first end of the connecting lever 192B contacts the control contact 191A, the second end of the connecting lever 192B is connected to the pull rod 192C, and the float 193 is fixed to the pull rod 192C.

In one example, the supporting member 192A may be a clip having a supporting portion, wherein the clip is clipped on the infusion tube 120, a first end of the supporting portion is connected with the clip, and a second end of the supporting portion is connected with a middle portion of the connecting lever 192B; the support 192A may have other structures, only the fulcrum 192O that is connected to the lever 192B may be formed, and the structure of the support 192A is not limited in the present application.

In one example, as shown in fig. 7, a first end of the connection lever 192B is provided with a protrusion 192F on a side toward the control contact 191A, and the protrusion of the protrusion 192F is formed in a circular arc shape to be continuously and stably contacted with the control contact 191A of the fluid replacement valve 191.

In the present embodiment, when the float 193 drives the pull rod 192C to move upward under the action of buoyancy, the second end of the connecting lever 192B moves upward, the first end of the connecting lever 192B moves downward around the fulcrum 192O, and the lower pressure controls the contact 191A to gradually reduce the opening degree of the fluid infusion valve 191; when the float 193 drives the pull rod 192C to move downward under the action of buoyancy, the second end of the connecting lever 192B moves downward, and the first end of the connecting lever 192B moves upward around the fulcrum 192O, so that the control contact 191A is gradually sprung up, and the opening degree of the fluid replenishing valve 191 is gradually increased. Thus, the opening and closing degree of the fluid replacement valve 191 can be automatically controlled.

In one embodiment, a plurality of positioning holes 192D are provided on the second end of the connecting lever 192B. Thus, the moment of the float 193 can be adjusted by adjusting the connection position of the pull rod 192C on the positioning hole 192D to match the magnitude of the control force of the control contact 191A. For example, when the control force required by the control contact 191A is small, the pull rod 192C may be connected to the positioning hole 192D near the side of the support 192A; when the control force required by the control contact 191A is large, the pull rod 192C can be connected to the positioning hole 192D on the side away from the support 192A. Thus, the control contact 191A of the liquid replenishing valve 191 can be automatically controlled under the action of the floating ball 193.

In one embodiment, the float 193 is inserted into the pull rod 192C, and a limit screw (not shown) is provided on the pull rod 192C to adjust the position of the float 193 on the pull rod 192C by the limit nut 192E. For example, when the liquid level of the drip pan 110 is low, the distance between the float 193 and the connecting lever 192B may be reduced; when the liquid level of the drip pan 110 is high, the distance between the float 193 and the connecting lever 192B can be increased. In this way, the distance between the float 193 and the connecting lever 192B can be adjusted according to the liquid in the drip pan 110, so that the fluid infusion member 190 can be applied to different liquid levels.

In one embodiment, the float 193 is ellipsoidal. Thus, when the liquid level set by the drip pan 110 is low, the ellipsoidal ball may have a greater buoyancy than the spherical ball, so that the first end of the control lever 192 can effectively control the control contact 191A.

In one embodiment, the length between the second end of support 192A and the first end of connecting lever 192B is less than the length between the second end of support 192A and the second end of connecting lever 192B. This arrangement may facilitate control of the control contacts 191A because the displacement between the fully closed position and the fully open position of the fluid replacement valve 191 corresponding to the control contacts 191A is small.

The present application further provides a data center that may include the refrigeration system of any of the embodiments described above.

The above-described embodiments should not be construed as limiting the scope of the present application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (15)

1. A refrigeration system, comprising:

the cooling tower is provided with a liquid collecting disc, and the bottom of the liquid collecting disc is provided with a liquid supplementing port, so that the end part of a liquid supplementing pipe extends into the liquid supplementing port and is immersed in the first cooling liquid of the liquid collecting disc;

the cooling device is provided with a liquid inlet and a liquid outlet and is arranged on the object to be cooled so as to exchange heat with the object to be cooled;

the first heat tracing pipe is provided with a first section, a second section and a third section which are connected in sequence, the input end of the first section of the first heat tracing pipe is connected with the liquid outlet of the cooling device, the output end of the third section of the first heat tracing pipe is connected with the liquid inlet of the cooling device, and the second section of the first heat tracing pipe is arranged at the bottom of the liquid collecting disc so that the second cooling liquid of the cooling device can radiate the first cooling liquid in the liquid collecting disc.

2. The refrigeration system as recited in claim 1, wherein the cooling tower is provided with a packing layer, the packing layer is positioned above the liquid collecting tray, and the middle part of the third section of the first heat tracing pipe is provided with a three-way valve; the refrigeration system further includes:

the second heat tracing pipe is provided with a first section and a second section which are connected in sequence, the input end of the first section of the second heat tracing pipe is respectively connected with the output end of the second section of the first heat tracing pipe and the input end of the third section of the first heat tracing pipe, and the output end of the second section of the second heat tracing pipe is connected with the third section of the first heat tracing pipe through the three-way valve; the first section of the second heat tracing pipe is arranged in the packing layer.

3. The refrigerant system as set forth in claim 2, wherein said second section of said first heat trace forms an S-shaped bend at the bottom of said drip pan and said first section of said second heat trace forms an S-shaped bend inside said packing layer.

4. The refrigeration system of claim 2 wherein the cooling tower has an outdoor liquid inlet pipe and an outdoor liquid outlet pipe, the refrigeration system further comprising:

the first liquid inlet of the heat exchanger is connected with the liquid outlet of the cooling device, the first liquid outlet of the heat exchanger is connected with the liquid inlet of the cooling device, the second liquid inlet of the heat exchanger is connected with the output end of the outdoor liquid outlet pipe, and the second liquid outlet of the heat exchanger is connected with the input end of the outdoor liquid inlet pipe.

5. The refrigerating system as recited in claim 4 wherein the input end of the outdoor liquid outlet pipe is connected with the bottom of the liquid collecting tray, the portion of the first section of the first heat tracing pipe close to the output end is closely attached to the outdoor liquid outlet pipe in parallel, and the portion of the third section of the first heat tracing pipe close to the input end is closely attached to the outdoor section of the liquid replenishing pipe in parallel.

6. The refrigeration system as recited in claim 4, wherein the cooling tower is provided with a liquid distributor, the liquid distributor is positioned above the packing layer, and the liquid distributor is connected with the output end of the outdoor liquid inlet pipe; and the second section of the second heat tracing pipe is tightly attached to the outdoor liquid inlet pipe and is arranged in parallel.

7. The refrigerant system as set forth in claim 4, further including:

the first water pump is arranged between the liquid outlet of the cooling device and the input end of the first section of the first heat tracing pipe and the first liquid inlet of the heat exchanger;

and the second water pump is arranged between the second liquid inlet of the heat exchanger and the output end of the outdoor liquid outlet pipe.

8. The refrigerant system as set forth in claim 7, further including:

the first stop valve is arranged on the first section of the first heat tracing pipe and close to the input end;

the second stop valve is arranged on the fourth section of the first heat tracing pipe and close to the output end;

and the water drain valve is arranged at the lowest position of the first heat tracing pipe.

9. The refrigeration system as recited in claim 1 wherein an end of the fluid replenishment pipe is provided with a fluid replenishment member, the fluid replenishment member comprising:

the liquid replenishing valve is connected with the end part of the liquid replenishing pipe and is provided with a control contact so as to control the opening and closing degree of the liquid replenishing valve;

and the first end of the control lever is in contact with the control contact, and the second end of the control lever is connected with a floating ball which floats on the liquid level of the first cooling liquid of the liquid collecting tray.

10. The refrigerant system as set forth in claim 9, wherein said control lever includes a support, a connecting lever and a tie rod; the first end of the supporting piece is arranged on the liquid supplementing pipe, and the second end of the supporting piece is connected with the middle section of the connecting lever; the first end of the connecting lever is in contact with the control contact, the second end of the connecting lever is connected with the pull rod, and the floating ball is fixed on the pull rod.

11. The refrigerant system as set forth in claim 10, wherein said second end of said connecting lever is provided with a plurality of positioning holes.

12. The refrigeration system as recited in claim 10, wherein the floating ball is inserted into the pull rod, and a limit screw is provided on the pull rod to adjust a position of the floating ball on the pull rod by a limit nut.

13. The refrigerant system as set forth in claim 12, wherein said floating ball is ellipsoidal.

14. The refrigerant system as set forth in claim 10, wherein a length between said second end of said support member and said first end of said connecting lever is less than a length between said second end of said support member and said second end of said connecting lever.

15. A data center, comprising: a refrigeration system as claimed in any one of claims 1 to 14.

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