CN106886267A - A kind of low pressure oil way enters oil supply structure - Google Patents

Abstract

The invention provides an oil supply structure for a low-pressure oil circuit, which includes an upper oil tank and an oil inlet device, the position of the upper oil tank is higher than the oil circuit; the oil inlet device includes an oil inlet pipeline, an oil inlet tank, and an oil inlet branch pipe; the upper end of the oil inlet tank Connect to the upper oil tank; there is a float valve in the upper oil tank; the float valve adjusts the oil intake of the upper oil tank, one side of the oil inlet tank is connected to the oil inlet branch pipe; the other end of the oil inlet branch pipe is connected to the spray oil circuit of the server shell; the flow is diverted through the oil inlet tank To the oil inlet manifold, the server housing, and cooling of the server inside the server housing. The invention solves the problem that the height difference caused by the top-to-bottom arrangement of the servers in the cabinet leads to inconsistent oil distribution in the gravity oil distribution circuit, and uses a liquid distributor to control the cooling liquid oil spraying process to achieve better cooling effect . The invention has ingenious design, reasonable structure, innovative method, breaks through the traditional large-scale server cooling method, and has strong practicability and is easy to popularize.

Description

A low-pressure oil circuit oil supply structure

technical field

The invention relates to a cooling medium supply method in a cooling system, in particular to an oil inlet supply structure of a low-pressure oil circuit.

Background technique

Driven by the big data business and the market, the power of various servers and blade machines used in the data center has been greatly increased, and the arrangement density has become higher and higher; correspondingly, the heat dissipation problem under high heat flux has attracted much attention. It has also become the focus and technical bottleneck of data center construction and operation and maintenance work; indirect or direct liquid cooling heat dissipation mode is considered to be an inevitable trend of data center heat dissipation due to its high comprehensive heat transfer efficiency; especially, given that heat sources directly contact heat absorption , Liquid cooling has the advantages of high comprehensive heat transfer coefficient and very small heat transfer resistance. The direct liquid cooling heat dissipation mode is theoretically the most effective heat dissipation method.

Most of the traditional cabinets use air cooling to dissipate heat, and the cooling capacity is limited. If the placement density of the equipment in the cabinet increases, the internal temperature of the equipment will rise sharply, and effective cooling cannot be achieved. In addition, the traditional cabinet is an open structure with low IP rating, local turbulent flow and dead heat dissipation, low heat dissipation efficiency and high energy consumption.

The existing technology is immature. In engineering application practice, one of the key links of liquid cooling is the liquid supply system. How to improve the efficiency of liquid supply while reducing the energy consumption of the supply cycle system is the key to solving engineering applications. On the one hand, in order to maintain the normal operation of the heat dissipation system, the liquid supply system needs to be equipped with a liquid pump to provide pump power and backup pressure. In the heat dissipation system, the pump structure and pump consumption will occupy a large part of the hardware configuration and software control of the system. If the amount of pumps can be reduced, especially the use of high-pressure pumps, the overall energy efficiency of this type of heat dissipation system will be greatly improved, and at the same time reduce Engineering costs and operation and maintenance costs. If the power consumption of the pump is too large during this process, it will increase the total power consumption of the cooling system, thereby reducing the cooling system performance (COP) and the overall PUE of the data center, and reducing the energy saving and environmental protection effect. On the other hand, the servers in the cabinet are usually stacked from top to bottom. If the liquid supply interface has different degrees of pressure loss in the process of providing circulating fluid to the servers on each layer, the heat dissipation effect of the servers on each layer will be seriously affected due to different liquid supply volumes, different cooling temperatures, and different cooling efficiencies.

Contents of the invention

The purpose of the present invention is to overcome the above problems in the prior art, provide a low-pressure oil circuit oil supply structure, control the cooling liquid oil spraying process, and achieve a better cooling effect.

In order to achieve the above-mentioned technical purpose and achieve the above-mentioned technical effect, the present invention is realized through the following technical solutions:

An oil inlet supply structure for a low-pressure oil circuit, comprising an upper oil tank and an oil inlet device, the upper oil tank is located higher than the oil circuit; the oil inlet device includes an oil inlet pipeline, an oil inlet tank, and an oil inlet branch pipe; The upper end of the oil inlet tank is connected to the upper oil tank; the upper oil tank is provided with a float valve; the float valve adjusts the oil intake of the upper oil tank, and one side of the oil inlet tank is connected to the Oil inlet branch pipe; the other end of the oil inlet branch pipe is connected to the spray oil circuit of the server shell; the pump pumps the cooling hydraulic oil from the main oil tank into the upper oil tank, and is diverted from the oil inlet tank to the oil inlet Branch pipes, server enclosures, to cool the servers inside the server enclosures.

Further, the lower end of the oil inlet device is connected to the auxiliary oil tank; the auxiliary oil tank is connected to the main oil tank through an oil return pipeline.

Further, the connection between the oil inlet tank and the oil inlet branch pipe is also provided with an oil inlet regulating valve; the oil inlet regulating valve regulates the oil intake of the oil inlet branch pipe.

Further, a low-pressure oil circuit oil supply structure also includes a liquid distributor; the liquid distributor includes a bottom plate provided with oil spray holes; the bottom plate is also provided with an overflow hole; the overflow The orifice is facing the hot area of the server.

Further, a low-pressure oil circuit oil supply structure also includes a liquid distributor; each said server housing is provided with a said liquid distributor; said liquid distributor includes an oil return chamber, a spray oil chamber , the oil distribution inlet, the oil return port; the oil inlet branch pipe is connected to the liquid distribution oil inlet; the oil return chamber is located above the spray oil chamber; the liquid distribution oil inlet The mouth is located in the spray oil chamber; the bottom surface of the spray oil chamber is provided with a spray hole; the spray hole is facing the server; the oil return chamber accepts the flow through the The cooling liquid oil in the server above the liquid distributor; the oil return port is used to discharge the cooling liquid oil in the oil return chamber.

Further, the liquid distributor also includes an overflow hole; the overflow hole is set on the bottom surface of the spray oil chamber; the overflow hole is higher than the bottom surface of the spray oil chamber ; The oil return chamber and the horizontal plane form an angle.

Further, the server shell includes an upper cover and a box body; the upper cover is fixed on the box body; the upper cover includes a cooling liquid inlet pipe, at least one spray pressure chamber, at least one spray hole, the upper cover shell, the box body includes a box body shell, a cooling liquid outlet pipe; the inner surface of the upper cover shell is provided with the spray pressure chamber, and the cooling liquid inlet pipe is connected to the Each of the spray pressure chambers is provided with the spray hole; the spray hole is facing the heating chip area of the server.

Further, a flow channel is provided in the box, and the cooling liquid outlet pipe communicates with the flow channel; the server casing also includes a seal, and the upper cover is sealed and installed with the box through the seal.

Further, a low-pressure oil circuit oil inlet supply structure also includes an oil inlet switch valve; the oil inlet switch valve is installed at the connection between the server shell and the oil inlet branch pipe, the liquid distributor and the oil inlet branch pipe. The connection of the oil inlet branch pipe; the oil inlet switch valve includes an oil inlet of the switch valve, a valve core, a valve body, a switch, and a telescopic oil outlet; the oil inlet of the closed valve is connected to the oil inlet device; the switch controls the valve core and the retractable oil outlet.

Further, the cooling liquid oil is an insulating liquid oil, including at least one of natural mineral oil, silicone oil, vegetable oil, transformer oil, and heat transfer oil; the cooling liquid oil is stored in the server casing; the cooling The liquid oil occupies a space ratio of 0%-50% of the shell of the server.

The beneficial effects of the present invention are as follows:

1. The liquid cooling spray system is adopted, the specific heat of the cooling liquid oil is large, and it is in direct contact with the heating element, and the heat transfer efficiency is high;

2. The device adopts a standardized module design, which not only meets the requirements of use, but also meets the requirements of installation and assembly. In actual use, it can meet the requirements of all cabinet servers;

3. The device adopts a standardized module design, which has considerable advantages for mass production and maintenance;

4. From a macro perspective, the overall fluidity of the cooling liquid oil is very good, all flowing from top to bottom, which can meet faster heat transfer;

5. The cooling liquid oil is in a flowing state during the whole process, and there will be no local high temperature phenomenon caused by oil collection;

6. In the actual large-scale engineering application, the system adopts the full gravity flow design, the pump only needs to pump the liquid to a high place, not only does not need to spend extra pump work to provide pressurized liquid to the nozzles of each server, but also There is no need to consume pump power at pipelines and elbows, which greatly saves pump power and reduces the cost of the pump, which is energy-saving and economical;

The above description is only an overview of the technical solutions of the present invention. In order to understand the technical means of the present invention more clearly and implement them according to the contents of the description, the preferred embodiments of the present invention and accompanying drawings are described in detail below. The specific embodiment of the present invention is given in detail by the following examples and accompanying drawings.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. In the attached picture:

Fig. 1 is a schematic diagram of the principle of a low-pressure oil circuit oil supply structure of the present invention;

Fig. 2 is a schematic diagram of the principle of another low-pressure oil circuit oil supply structure of the present invention;

Fig. 3 is a schematic diagram of a liquid distributor and a server for liquid distribution;

Fig. 4 is a schematic diagram of the planar structure of a liquid distributor;

Fig. 5 is a schematic diagram of the internal structure of the oil inlet switch valve of the present invention;

Fig. 6 is a top view of the oil inlet switching valve of the present invention;

Fig. 7 is an overall schematic diagram of the oil separating device;

Fig. 8 is a schematic diagram 1 of the internal structure of the oil separation device;

Fig. 9 is a top view of the internal structure of the oil separator;

Fig. 10 is a schematic diagram 2 of the internal structure of the oil separation device;

Fig. 11 is a schematic structural diagram of an oil separation unit;

Fig. 12 is a schematic diagram of the principle of the oil separation regulator;

Fig. 13 is a structural schematic diagram of a pressure relief pipe;

Fig. 14 is a schematic structural diagram of the server subrack of the present invention;

Fig. 15 is a schematic view 1 inside the server subrack of the present invention;

Fig. 16 is a schematic diagram 2 inside the server subrack of the present invention;

Explanation of symbols in the figure: main oil tank 1, pump 2, radiator 3, oil separator 4, box body 41, oil inlet regulating valve 42, oil inlet valve body 421, connecting rod 422, floating body 423, oil separator and inlet port 43 , oil separation unit 44, air pipe 441, oil separation and oil outlet 442, oil volume regulator 443, diversion deflector 444, air bubble removal device 45, pressure relief pipe 46, pressure relief oil inlet 461, pressure relief oil outlet Port 462, pressure relief hole 463, filter 5, oil inlet device 6, liquid distributor 7, oil return chamber 71, spray oil chamber 72, liquid distribution oil inlet 73, oil return port 74, overflow hole 75, Spray holes 76, oil return device 8, oil inlet tank 9, server casing 10, upper cover 101, fasteners 102, seals 103, box body 104, adapter plate 105, coolant inlet pipe 106, closed flow channel 107 , spray pressure chamber 108, spray hole 109, upper cover shell 110, socket 111, heating chip area 112; partition 113, box shell 114, mounting column 115, coolant outlet pipe 116, oil inlet branch pipe 11. Oil inlet regulating valve 12, auxiliary oil tank 13, oil inlet switch valve 16, switch valve oil inlet 161, spool 162, valve body 163, switch 164, telescopic oil outlet 165.

detailed description

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

Referring to Figures 1-16, a low-pressure oil circuit oil supply structure, as shown in Figures 1 and 2, includes an upper oil tank and an oil inlet device 6, the position of the upper oil tank is higher than the oil circuit, It is characterized in that: the oil inlet device 6 includes an oil inlet pipeline, an oil inlet tank 9, and an oil inlet branch pipe 11; the upper end of the oil inlet tank 9 is connected to the upper oil tank; Valve; the float valve adjusts the oil intake of the upper oil tank, and one side of the oil inlet tank 9 is connected to the oil inlet branch pipe 11; the other end of the oil inlet branch pipe 11 is connected to the server shell 10 spray oil circuit; The pump pumps the cooling hydraulic oil from the main oil tank 1 into the upper oil tank, and divides it into the oil inlet branch pipe 11 and the server shell 10 through the oil inlet tank 9 to cool the server in the server shell 10 . The lower end of the oil inlet device 6 is connected to the auxiliary oil tank 13; the auxiliary oil tank 13 is connected to the main oil tank 1 through an oil return pipeline. The connection between the oil inlet tank 9 and the oil inlet branch pipe 11 is also provided with an oil inlet regulating valve 12; the oil inlet regulating valve 12 regulates the oil inlet amount of the oil inlet branch pipe 11. A low-pressure oil circuit oil supply structure also includes a liquid distributor 7; each of the server casings 10 is provided with a liquid distributor 7 above. As shown in Figure 1, in one embodiment, the liquid distributor 7 includes a bottom plate provided with an oil spray hole; the bottom plate is also provided with an overflow hole 75; the overflow hole 5 is heating the server zone, when the temperature of the server rises above a certain temperature limit, the supply of cooling liquid oil increases and passes through the overflow hole 75, and the cooling liquid oil pours down to the main heat-generating area of the server through the overflow hole 75 to quickly reduce the temperature.

Preferably, as shown in Figure 3 and Figure 4, the liquid distributor 7 includes an oil return chamber 71, a spray oil chamber 72, a liquid distribution oil inlet 73, and an oil return port 74; the oil return chamber 71 Located above the spray oil chamber 72; the liquid distribution oil inlet 73 is located in the spray oil chamber 72; the bottom surface of the spray oil chamber 72 is provided with a spray hole 76; The spray hole 76 is facing the server; the oil return cavity 71 accepts the cooling liquid oil flowing through the server above the liquid distributor 7; the oil return port 74 is used to discharge the return Cooling liquid oil in the oil chamber 71. Preferably, the liquid distributor 7 also includes an overflow hole 75; the overflow hole 75 is arranged on the bottom surface of the spray oil chamber 72; the overflow hole 75 is higher than the spray The lower bottom surface of the oil spray chamber 72; the oil return chamber 71 forms an included angle with the horizontal plane. As shown in FIG. 2 , the oil return port 74 is facing the oil return tank of the oil return device 8 , and the cooling liquid oil returned from the oil return port 74 flows into the main oil tank 1 through the oil return tank. The liquid distributor 7 corresponding to each layer of servers is provided with several overflow holes 75, and the height of the overflow holes 75 is 5-20mm higher than the oil spraying plate to ensure the depth of the oil level in the spray oil chamber 72. When the amount of oil entering is greater than the amount of pouring oil (such as during maintenance of a single-layer server), excess oil enters the server through the overflow hole 75; the overflow hole 75 is located in a relatively concentrated area of heating elements to improve the heat dissipation efficiency of the server.

It should be understood that the liquid distributor 7 is used to distribute the cooling liquid oil after oil separation from the oil separator 4 in the actual liquid distribution process according to the actual parts to be cooled. Generally, the liquid distributor 7 is manufactured separately from the server housing 10, and the distribution The liquid container 7 is installed on the server casing 10 as shown in Fig. 3 and Fig. 4, and the server casing 10 is an open structure.

In another embodiment, preferably, as shown in Figures 14-16, the server housing 10 is implemented as a server box; from the manufacturing process, the liquid distribution function or overflow of the liquid distributor 7 The function is combined with the server box structure; the server box includes an upper cover 101 and a box body 104; the upper cover 101 is fixed on the box body 104; the upper cover 101 includes a coolant inlet pipe 106, At least one spray pressure chamber 108, at least one spray hole 109, and an upper cover shell 110, the box body 104 includes a box body shell 114, and a cooling liquid outlet pipe 116; the interior of the upper cover shell 110 The spray pressure chamber 108 is provided on the surface, the coolant inlet pipe 106 is connected to the spray pressure chamber 108, and each of the spray pressure chambers 108 is provided with the spray hole 109; The shower hole 109 is facing the heating chip area 112 of the server. Preferably, the box body 104 is provided with a flow channel, and the cooling liquid outlet pipe 116 communicates with the flow channel; the server subrack further includes a seal 103, and the upper cover 101 is connected to the seal 103 through the seal 103. The box 104 is sealed and installed; the inner surface of the box shell 114 is also provided with a partition 113; the flow channel and the server heating chip area 112 are located on the same side of the partition 113; The partition 113 in the server subrack divides the server into the heating chip area 112 and the non-main heating area, that is, the liquid flow channel in the server subrack is planned to further ensure the centralized heat dissipation of the heating area and improve the heat dissipation efficiency. Preferably, as shown in FIG. 14 , an adapter plate 105 may be provided on the outside of the box shell 114 . The adapter board 105 is provided with various sockets or interfaces for connecting storage devices and other servers.

Preferably, as shown in FIG. 15 , the upper cover 101 further includes a closed channel pipe 107 through which the coolant inlet pipe 106 is connected to the spray pressure chamber 108 . The use of the closed channel pipe 107 can ensure that the coolant inlet pipe 106 is better connected with the spray pressure chamber 108, and can facilitate the spray pressure chamber 108 in the upper cover housing 110 Superficially reasonable arrangement.

Preferably, as shown in Figures 14-16, the server subrack further includes fasteners 102, a number of insertion holes 111 are provided at the edge of the upper cover shell 110, and a plurality of insertion holes 111 are provided at the edge of the sealing member 103 Several through holes, the through holes correspond to the jacks 111, and the edge of the box shell 114 is provided with a number of mounting columns 115, and the mounting columns 115 correspond to the jacks 111 and the through holes The fastener 102 is matched with the socket 111, the through hole, and the mounting column 115, and the upper cover 101, the seal 103 and the box body 104 are fixedly connected together by the fastener 102. The fastener can be pinned or threaded to the mounting column 115, and the edge of the upper cover shell and the sealing member 103 is provided with an insertion hole or a through hole that will not affect the layout of its internal key structure, and Also easy to remove and install. Preferably, the coolant inlet pipe 106 is horizontally arranged on one side of the upper cover shell 110, the coolant outlet pipe 116 is horizontally arranged on one side of the box shell 114, and the coolant inlet The tube 106 is located above the coolant outlet tube 116 . The cooling liquid outlet pipe 116 is located below the cooling liquid inlet pipe 106, which facilitates the cooling liquid to be discharged from top to bottom under the action of gravity; the cooling liquid inlet pipe 106 is located above the cooling liquid outlet pipe 116, Coolant entering the case is not hindered by gravity. Preferably, in order to ensure that the bottom of the box 104 has a small amount of residual coolant, the coolant outlet pipe 116 is higher than the bottom of the box shell 114 . The remaining amount of cooling liquid can be used to partially soak and cool the server, but the remaining amount of cooling liquid should not cover the upper surface of the server and will not affect the spraying effect. Preferably, in order to allow the cooling liquid to flow out of the server subrack smoothly and quickly, based on the principle of gravity, an included angle is formed between the bottom surface inside the box shell 114 and the horizontal plane.

A gravity spray system, as shown in Figure 1 and Figure 2, includes a main oil tank 1, a pump 2, a radiator 3, a data center cabinet, an oil inlet device 6, an oil return device 8, and cooling liquid oil; The oil tank 1, the pump 2, the radiator 3, and the data center cabinet are connected to form a closed oil circuit through the oil inlet device 6 and the oil return device 8; the pump 2 pumps the cooling liquid oil from the main oil tank 1, and passes through the The radiator 3 exchanging heat enters the oil separator 4 in the data center cabinet through the pipeline; the oil separator 4 is located at the upper part of the data center cabinet; the oil separator 4 divides the oil , the liquid distributor 7 distributes liquid and sprays to cool the server; the cooling liquid oil after the cooling treatment is returned to the main oil tank 1 through the oil return device 8 .

Preferably, the gravity spray system also includes a filter 5 and an auxiliary oil tank 13; the filter 5 is connected to the closed oil circuit; the oil inlet device 6 includes an oil inlet pipeline, an oil inlet tank 9. Oil inlet branch pipe 11; the upper end of the oil inlet tank 9 is connected to the oil separator 4, and the lower end is connected to the auxiliary oil tank 13; one side of the oil inlet tank 9 is connected to the oil inlet branch pipe 11; The other end of the oil inlet branch pipe 11 is connected to the server housing 10 or the liquid distributor 7; the connection between the oil inlet tank 9 and the oil inlet branch pipe 11 is also provided with an oil inlet regulating valve 12; The oil return device 8 includes an oil return tank and an oil return pipeline; the auxiliary oil tank 13 is connected to the main oil tank 1 through an oil return pipeline; the oil return port 74 of the liquid distributor 7 is connected to the Back to tank connection. As shown in Fig. 1 and Fig. 2, the position of the filter 5 is not limited, and it should be placed before the pump 2 or after the pump 2 or after the radiator 3, which should be within the protection scope of the present invention.

As shown in Figure 2, the data center cabinet includes a cabinet body, an oil separator 4, and several liquid distributors 7; the cabinet body includes several mounting frames; the cabinet body is sequentially installed with several server shells 10 from high to low A server is placed in the server shell 10; a liquid distributor 7 is arranged above each of the server shells 10; the oil separator 4 is installed above all the liquid distributors 7; The oil separator 4 is connected to the liquid distributor 7 through the oil inlet device 6; the cooling liquid oil flows to the liquid distributor 7 through the oil distributor 4, and the liquid distributor The device 7 sprays the cooling liquid oil to the server for cooling. Generally, in order to ensure the overall structural strength of the cabinet, the cabinet body is made of metal materials; in particular, flexible materials can also be introduced to manufacture the cabinet body.

Preferably, as shown in Figures 5 and 6, the data center cabinet further includes an oil inlet switch valve 16; the oil inlet switch valve 16 is installed on the server shell 10 and the oil inlet device 6 The connection, the connection between the liquid distributor 7 and the oil inlet device 6; the oil inlet switch valve 16 includes a switch valve oil inlet 161, a valve core 162, a valve body 163, a switch 164, a telescopic outlet The oil port 165 ; the valve closing oil inlet 161 is connected to the oil inlet device 6 ; the switch 164 controls the spool 162 and the retractable oil outlet 165 . The oil inlet switch valve controls the opening and closing of the cooling liquid oil of the liquid distributor 7, and at the same time realizes the extension and contraction of the telescopic oil outlet 165; There is a certain distance from the oil hole. At this time, the telescopic oil outlet 165 is also in the extended state, and the cooling liquid oil flows into the liquid distributor 7 through the oil inlet 161 and the telescopic oil outlet 165; when the server needs to be maintained and overhauled, rotate the handle The switch 164 drives the switch spool 162 to rotate and move towards the oil inlet 161 to close the oil inlet 161, and at the same time the telescopic oil inlet 165 retracts to close the liquid flow space, ensuring that the server will not be affected by the liquid when it is taken out for maintenance.

As shown in Figures 7-10, the oil separator 4 includes a box body 41, at least one oil inlet port 43, and several oil separation units 44; the several oil separation units are installed on the box body 41 Inside; the oil separation unit 44 includes an oil separation and oil outlet 442; the cooling liquid oil enters the oil separator 4 from the oil separation and oil inlet 43, and from the oil separation and oil outlet 442 flow to each cooling branch.

Preferably, as shown in Figures 10-12, the oil distribution unit 44 further includes a vent pipe 441, an oil volume regulator 443, and a diversion deflector 444; The oil outlet port 442, the oil volume regulator 443 controls the oil output of the oil outlet port 442; the flow diversion deflector 444 separates each of the oil separation units 44 into independent units, The diversion deflector 444 diverts the flowing oil, so that there are multiple independent channels in the housing, and each channel corresponds to an oil distribution port, so that the amount of oil that finally flows into this oil distribution port remains consistent, so that each distribution port The oil volume regulator 443 of the oil unit 44 can independently control the oil outlet pressure and the oil outlet volume of each oil distribution unit 44; the vent pipe 441 communicates with the oil distribution outlet 442 to balance the oil distribution outlet. The oil outlet pressure of the oil port 442. Preferably, the oil quantity regulator 443 includes a cone, an elastic member, and a pressure rod; the pressure rod is fixedly installed on one side of the box body 41; the cone is fixed on the pressure rod The lower end; the cone is facing the oil separation and oil outlet end 442 ; the elastic member adjusts the distance between the cone and the oil separation and oil outlet 442 . As shown in Figure 12, adjust the height of the pressure rod so that the angle α between the oil separation outlet 442 and the cone reaches a suitable angle, and the cooling liquid oil flows to the server along this space angle; as shown in Figure 2 , the entire oil separator 4 is installed on the upper part of the whole set of cooling equipment, and the cooling liquid oil in the oil separator 4 enters the server to be cooled under the action of gravity, according to the difference in height between the oil separator 442 and the server to be cooled, Adjust α to ensure that the cooling liquid oil flowing out of the oil separation outlet 442 of each oil separation unit 44 flows at the same speed and at the same pressure.

Preferably, as shown in Figure 9, the oil separator 4 further includes an oil inlet regulating valve 42; the oil inlet regulating valve 42 is connected to the oil inlet end 43 through a pipeline; The oil inlet regulating valve 42 includes an oil inlet valve body 421 , a connecting rod 422 , and a floating body 423 ; the floating body 423 floats up, drives the connecting rod 422 to move, and closes the oil inlet valve body 421 .

Preferably, as shown in FIG. 8 , the oil separator 4 further includes a bubble removal device 45 ; the bubble removal device 45 is installed adjacent to the oil separation unit 44 . Preferably, the air-removing device 45 is a wire mesh or a perforated plate. Bubbles mixed in the pumped cooling liquid oil cannot enter the oil separation unit 44 under the barrier of the screen or porous plate, ensuring that the cooling liquid oil flowing out from the oil separation outlet 442 of each oil separation unit 44 is pure.

Preferably, as shown in Figure 13, the oil separator 4 also includes a pressure relief pipe 46; the pressure relief pipe 46 includes at least one pressure relief oil inlet 461, at least one pressure relief oil outlet 462, several Pressure relief holes 463; the pressure relief oil inlet 461 is connected to the oil inlet regulating valve 42; the plurality of pressure relief holes 463 are located on the wall of the pressure relief pipe 46. Several pressure relief holes 463 provided on the pressure relief pipe 46 prevent the pressure of the pumped cooling liquid oil from being too high, causing unnecessary impact on the oil separator 4 and other pipelines and components, and damaging the equipment.

Preferably, as shown in Figure 7, the oil separator 4 also includes a respirator 47; the respirator 47 is installed on the upper cover of the box body 41; the respirator 47 is used to communicate with all The air inside the oil separator 4 and the outside air mentioned above. The design of the breather prevents the formation of a closed high pressure in the oil separator, which can damage the pipeline and other equipment.

It should be understood that the oil separator 4 is an embodiment specifically designed in combination with the functions of the upper oil tank, the oil inlet tank 9, and the oil inlet regulating valve 12. In the present invention, in order to distinguish the connection and difference between the various schemes, it will be described here, and further The function of the oil regulating valve 12 is equivalent to that of the oil quantity regulator 443, but they are not limited to being used alone, and can also be used in combination to achieve corresponding effects.

A method for separating oil by gravity spray cooling, comprising the following steps:

Inlet oil, pump the cooling liquid oil into the oil separator 4;

Oil volume adjustment, through the oil inlet regulating valve 42 to control the stock of cooling liquid oil in the oil separator 4, adjust the position of the connecting rod 422, and close the oil inlet regulating valve when the floating body 423 floats 42 position;

Pressure relief adjustment, buffer the oil pressure of the pumped cooling liquid oil through several pressure relief holes 463 provided on the pressure relief pipe 46;

Bubble treatment, through the small holes on the air-removing device 45, the air bubbles in the cooling liquid oil are isolated;

For oil separation treatment, the distance between the cone and the oil separation outlet 442 is adjusted by adjusting the elastic member to match the height difference between the oil separation outlet 442 and the equipment to be cooled.

Preferably, the cooling liquid oil is an insulating liquid oil, including at least one of natural mineral oil, silicone oil, vegetable oil, transformer oil, and heat transfer oil; the cooling liquid oil is stored in the server shell 10; the The cooling liquid oil occupies 0%-50% of the space of the server casing 10. In order to achieve a better cooling effect, the cooling liquid oil in the server casing 10 maintains a certain liquid level, and the cooling liquid oil is fully in contact with the main heating elements of the server. The heat is absorbed, collected through the oil return pipeline, and the cooling liquid oil returned by each layer of servers returns to the main oil tank 1 again.

The invention provides an oil supply structure for a low-pressure oil circuit, which includes an upper oil tank and an oil inlet device, and the position of the upper oil tank is higher than that of the oil circuit; the oil inlet device includes an oil inlet pipeline, an oil inlet tank, and an oil inlet branch pipe; the upper end of the oil inlet tank Connect to the upper oil tank; there is a float valve in the upper oil tank; the float valve adjusts the oil intake of the upper oil tank, one side of the oil inlet tank is connected to the oil inlet branch pipe; the other end of the oil inlet branch pipe is connected to the spray oil circuit of the server shell; the flow is diverted through the oil inlet tank To the oil inlet manifold, the server housing, and cooling of the server inside the server housing. The invention solves the problem that the height difference caused by the top-to-bottom arrangement of the servers in the cabinet leads to inconsistent oil distribution in the gravity oil distribution circuit, and uses a liquid distributor to control the cooling liquid oil spraying process to achieve a better cooling effect . The invention has ingenious design, reasonable structure, innovative method, breaks through the traditional large-scale server cooling method, and has strong practicability and is easy to popularize.

1. The present invention adopts a liquid-cooled spray system, the specific heat of cooling liquid oil is large, and it is in direct contact with heating elements, so the heat transfer efficiency is high;

2. The present invention adopts a standardized module design, which not only meets the requirements for use, but also meets the requirements for installation and assembly. In actual use, it can meet the requirements of all cabinet servers;

3. The present invention adopts a standardized module design, which has considerable advantages for mass production and maintenance;

4. In the present invention, from a macro perspective, the overall fluidity of the cooling liquid oil is very good, all flowing from top to bottom, which can meet faster heat transfer;

5. The cooling liquid oil of the present invention is in a flowing state during the whole process, and there will be no local high temperature phenomenon caused by oil collection;

6. In the actual large-scale engineering application of the present invention, the system adopts a full-gravity flow design, and the pump only needs to pump the liquid to a high place, not only does it not need to spend extra pump work to provide pressurized liquid to the nozzles of each server , and there is no need to consume pump work at the pipeline and elbows, which greatly saves pump work and reduces the cost of the pump, which is energy-saving and economical.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form; all those skilled in the art can smoothly implement the present invention as shown in the attached drawings and the above descriptions. However, any equivalent change, modification and evolution made by those skilled in the art without departing from the scope of the technical solution of the present invention by utilizing the technical content disclosed above are all equivalent implementations of the present invention Example; at the same time, all changes, modifications and evolutions made to the above embodiments according to the substantive technology of the present invention are still within the scope of protection of the technical solutions of the present invention.

Claims (10)

1. a kind of low pressure oil way enters on oil supply structure, including one to put fuel tank, oil feeding device (6), it is described on put fuel tank position Higher than oil circuit, it is characterised in that：Described oil feeding device (6) including in-line, oil-feed tank (9), enter oil inlet pipe (11)；It is described The connection of oil-feed tank (9) upper end it is described on put fuel tank；Put on described and float valve is provided with fuel tank；Put in described float valve regulation Fuel tank oil inlet quantity, described oil-feed tank (9) side connection it is described enter oil inlet pipe (11)；Described enters oil inlet pipe (11) other end Connection server shell (10) sprays oil circuit；Pump will cool down hydraulic oil and is pumped into from main fuel tank (1) on described to be put in fuel tank, Branched into oil inlet pipe (11), server enclosure (10), the service in cooling server enclosure (10) through described oil-feed tank (9) Device.

2. a kind of low pressure oil way according to claim 1 enters oil supply structure, it is characterised in that：Described oil feeding device (6) the described service tank (13) of lower end connection；Described service tank (13) is with described main fuel tank (1) by return line Connection.

3. a kind of low pressure oil way according to claim 2 enters oil supply structure, it is characterised in that：Described oil-feed tank (9) Fuel oil feed regulation valve (12) is additionally provided with the described junction for entering oil inlet pipe (11)；Described fuel oil feed regulation valve (12) regulation is described Enter oil inlet pipe (11) oil inlet quantity.

4. oil supply structure is entered according to a kind of described low pressure oil way of one of claims 1 to 3, it is characterised in that：Also wrap Include liquid distributor (7)；Described liquid distributor (7) is provided with the base plate for drenching oilhole including one；Spout hole is additionally provided with described base plate (75)；Described spout hole (75) is just to server hot zone.

5. oil supply structure is entered according to a kind of described low pressure oil way of one of claims 1 to 3, it is characterised in that：Also wrap Include liquid distributor (7)；Each described server enclosure (10) top is provided with the liquid distributor (7) described in；Described liquid distributor (7) Including oil back chamber (71), spray oil pocket (72), cloth liquid oil inlet (73), oil return opening (74)；Described enters oil inlet pipe (11) and institute State cloth liquid oil inlet (73) connection；Described oil back chamber (71) is positioned at described spray oil pocket (72) top；Described cloth liquid enters Hydraulic fluid port (73) is in described spray oil pocket (72)；Described spray oil pocket (72) bottom surface is provided with spray apertures (76)；It is described Spray apertures (76) just to described server；Described oil back chamber (71) accepts the service flowed through above the liquid distributor (7) Cooling liquid state oil in device；Described oil return opening (74) is for discharging the oil of the cooling liquid state in the oil back chamber (71).

6. a kind of low pressure oil way according to claim 5 enters oil supply structure, it is characterised in that：Described liquid distributor (7) Also include spout hole (75)；Described spout hole (75) is located at described spray oil pocket (72) bottom surface；Described spout hole (75) higher than described spray oil pocket (72) bottom surface；Described oil back chamber (71) is horizontal by an angle.

7. oil supply structure is entered according to a kind of described low pressure oil way of one of claims 1 to 3, it is characterised in that：It is described Server enclosure (10) include upper lid (101), casing (104)；The upper lid (101) is fixed on the casing (104)；Institute State lid (101) including cooling liquid inlet pipe (106), at least one spray pressure chamber (108), at least one spray apertures (109), on Lid housing (110), the casing (104) includes casing housing (114), coolant outlet (116)；The shell of top cover body (110) inner surface is provided with the spray pressure chamber (108), and the cooling liquid inlet pipe (106) connects the spray pressure Chamber (108), the spray apertures (109) are equipped with each spray pressure chamber (108)；The spray apertures (109) are just to service Device euthermic chip region (112).

8. a kind of low pressure oil way according to claim 7 enters oil supply structure, it is characterised in that：Described casing (104) Runner is inside provided with, the coolant outlet (116) communicates with runner；Server enclosure (10) also includes seal (103), institute State lid (101) and installation is sealed with the casing (104) by the seal (103).

9. a kind of low pressure oil way according to claim 4 or 6 or 8 enters oil supply structure, it is characterised in that：Also include oil-feed Switch valve (16)；Described oil-feed switch valve (16) is installed on described server enclosure (10) and enters oil inlet pipe (11) with described Junction, described liquid distributor (7) and described enter oil inlet pipe (11) junction；Described oil-feed switch valve (16) includes switch Valve oil inlet (161), valve element (162), valve body (163), switch (164), flexible oil-out (165)；Described pass valve oil inlet (161) described oil feeding device (6) is connected；It is the described valve element (162) of described switch (164) control, described flexible fuel-displaced Mouth (165).

10. a kind of low pressure oil way according to claim 9 enters oil supply structure, it is characterised in that：Described cooling liquid state Oil is at least one in insulation fluid oil, including crude mineral oils, silicone oil, vegetable oil, transformer oil, conduction oil；Described clothes There is cooling liquid state oil in business device shell (10)；Described cooling liquid state oil takes server enclosure (10) space proportion and is 0%-50%.