Separating type thermosyphon evaporation cold screw unit

Abstract

The utility model discloses a separation type thermosyphon evaporation cold screw unit which comprises a machine box. A screw unit skid is arranged in the machine box and comprises a compressor, an oil separator, an integrated siphon tank, a liquid storage device and a siphon oil cooling plate heat exchanger, the compressor is connected to the oil separator and the siphon oil cooling plate heat exchanger through an exhaust assembly and an oil return assembly respectively, the oil separator is communicated with the evaporation cooling upper coil pipe, and the integrated siphon tank is communicated with the liquid storage device. The oil separator is connected to the siphon oil cooling plate heat exchanger through a crude oil assembly, the evaporation cooling upper coil pipe is communicated with the integrated siphon tank, the integrated siphon tank is communicated with the liquid storage device through an overflow pipe, and the integrated siphon tank is respectively communicated with the evaporation cooling upper coil pipe, the siphon oil cooling plate heat exchanger and the liquid storage device through liquid storage device balance pipes. The integrated siphon tank is connected to the siphon oil cooling plate heat exchanger through a liquid refrigerant assembly. The high integration of the system is realized, the transportation is convenient, the height difference is formed between the evaporation cooling upper box body and the screw unit skid, the refrigerant is ensured to overcome the flowing resistance of the pipeline, and the construction period can be shortened at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of fluorine refrigeration, in particular to a separate type thermosyphon evaporative cooling screw unit. Background Art

[0002] In the field of air conditioning, evaporative cooling screw units are widely used, but in the field of refrigeration, due to the low evaporation temperature and large pressure ratio, screw units need to add an additional oil cooling system. The oil cooling system mainly includes air-cooled oil cooling system, water-cooled oil cooling system and thermosyphon oil cooling system. The thermosyphon oil cooling system is widely used because of its high energy efficiency and no need for machine room heat dissipation or cooling water circuit. The thermosyphon oil cooling system relies on the thermosyphon effect to make the refrigerant flow, which needs to overcome the resistance of the pipeline, so the evaporative cooling and thermosyphon tank must have a certain installation height. The traditional practice is to set up a machine room, place the unit and thermosyphon tank inside the machine room, and the machine room must be higher than the installation height of the thermosyphon tank. The evaporative cooling is placed on the top outside the machine room. The construction period is long, the installation is difficult, and the installation risk is high.

[0003] The invention with application number CN202010997468.8 and application date 2020.09.21 discloses an evaporative cooling unit, its control method and refrigeration equipment. The invention mainly consists of a refrigeration circuit composed of a compressor, an evaporative condenser and an evaporator. It refrigerates when the ambient temperature is high and recycles the cold air in the environment through a refrigerant pump when the ambient temperature is low. The invention has a significant energy-saving effect but is not suitable for the refrigeration field, and there is no oil cooling circuit.

[0004] The invention with application number CN202111359962.2 and application date 2021.11.17 discloses a large screw evaporative cooling unit. The invention adopts an evaporative condenser to achieve dry operation in winter and wet operation in summer. It is easy to install, but it is also not suitable for freezing conditions.

[0005] At the same time, the existing siphon tanks are large in size, high in material cost, and cannot be integrated with skids. Utility Model Content

[0006] The purpose of the utility model is to provide a technical solution for a separate thermosiphon evaporative cooling screw unit to address the deficiencies in the prior art, which can not only realize the high system integration of the evaporative cooling screw unit and improve the efficiency of the whole machine, but also facilitate transportation, so that there is a height difference between the evaporative cooling upper box and the screw unit skid, ensuring that the refrigerant overcomes the flow resistance of the pipeline and has high stability. At the same time, it can reduce the construction difficulty of the project site and shorten the construction period.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] A separate thermosyphon evaporative cooling screw unit, comprising

[0009] An evaporative cooling upper box body, in which an evaporative cooling upper coil is arranged;

[0010] An evaporative cooling lower cabinet;

[0011] and a chassis, wherein the evaporative cooling lower box body is connected to the evaporative cooling upper box body and the chassis;

[0012] Features:

[0013] The screw unit skid is provided in the chassis, and the screw unit skid includes at least one compressor, an oil separator, an integrated siphon tank, a liquid reservoir and a siphon oil cooling plate. The compressor is connected to the oil separator and the siphon oil cooling plate through an exhaust assembly and an oil return assembly respectively. The oil separator is connected to the evaporative cooling upper coil, and the oil separator is connected to the siphon oil cooling plate through a crude oil assembly. The evaporative cooling upper coil is connected to the integrated siphon tank, and the middle part of the integrated siphon tank is connected to the liquid reservoir through an overflow pipe. The upper part of the integrated siphon tank is connected to the liquid reservoir through a storage tank. The liquid balance pipe is connected to the evaporative cooling upper coil, the siphon oil cooling plate and the liquid storage tank respectively, and the lower part of the integrated siphon tank is connected to the siphon oil cooling plate through the liquid refrigerant component; through the design of the above structure, not only the system high integration of the evaporative cooling screw unit can be achieved, the efficiency of the whole machine is improved, but also the transportation is convenient, so that there is a height difference between the evaporative cooling upper box and the screw unit skid, which ensures that the refrigerant overcomes the pipeline flow resistance and has high stability. At the same time, it can reduce the construction difficulty of the project site and shorten the construction period.

[0014] Furthermore, the exhaust component includes an exhaust pipe, a high-pressure pressure sensor and a high-pressure gauge. The compressor is connected to the oil separator through the exhaust pipe. The high-pressure pressure sensor and the high-pressure gauge are arranged in the exhaust pipe for detecting the pressure of the compressed gaseous refrigerant in the exhaust pipe.

[0015] Furthermore, the oil return assembly includes an oil return pipe, a first oil branch ball valve, a fine oil filter, an oil flow switch, an oil solenoid valve, a second oil branch ball valve and an oil sight glass. The siphon oil cold plate is connected to the compressor through the oil return pipe. The first oil branch ball valve, the fine oil filter, the oil flow switch, the oil solenoid valve, the second oil branch ball valve and the oil sight glass are all arranged on the oil return pipe, which is used to cool the hot oil after heat exchange in the siphon oil cold plate and input it into the compressor, while controlling the flow of the hot oil.

[0016] Furthermore, the crude oil assembly includes a crude oil pipe, a first stop valve, a crude oil filter and a second stop valve. The oil separator is connected to the siphon oil cooling plate through the crude oil pipe. The first stop valve, the crude oil filter and the second stop valve are all arranged on the crude oil pipe, which is used to input the hot lubricating oil at the bottom of the oil separator into the siphon oil cooling plate to exchange heat with the liquid refrigerant input from the bottom of the integrated siphon tank.

[0017] Furthermore, the liquid refrigerant assembly includes a liquid refrigerant pipe, a first oil-cooled fluorine stop valve, an oil-cooled fluorine filter barrel, an oil-cooled fluorine sight glass, an oil-cooled fluorine solenoid valve and a second oil-cooled fluorine stop valve. The integrated siphon tank is connected to the siphon oil-cooled plate exchanger through the liquid refrigerant pipe. The first oil-cooled fluorine stop valve, the oil-cooled fluorine filter barrel, the oil-cooled fluorine sight glass, the oil-cooled fluorine solenoid valve and the second oil-cooled fluorine stop valve are all arranged on the liquid refrigerant pipe, which is used to control the liquid refrigerant in the integrated siphon tank to enter the siphon oil-cooled plate exchanger.

[0018] Furthermore, the integrated siphon tank includes a tank body and a head, wherein the upper and lower heads are arranged at the top and bottom of the tank body, and the tank body is provided with a liquid reservoir pipe, an oil cooling return pipe, a sight glass seat and a balance port, wherein the oil cooling return pipe and the balance port are located above the liquid reservoir pipe and the sight glass seat, and an SGR sight glass is arranged on the sight glass seat, and the balance port is connected with a steel equal-diameter tee, and the steel equal-diameter tee is provided with an evaporative cooling air inlet and a liquid reservoir balance interface; the head located at the top is connected with an evaporative cooling liquid outlet, and a siphon tank liquid inlet stop valve is arranged on the evaporative cooling liquid outlet; the head located at the bottom is connected with an oil cooling pipe, and a siphon tank liquid outlet stop valve is arranged on the oil cooling pipe. The design of the integrated siphon tank is conducive to the integration of the screw unit skid, convenient transportation, and reduced construction difficulty.

[0019] Furthermore, the compressor is connected to a gaseous refrigerant input component, which includes a gaseous refrigerant input pipe, a low-pressure pressure sensor, a low-pressure gauge, an air intake filter barrel and a pressure maintaining joint. The gaseous refrigerant input pipe is connected to the compressor, and the low-pressure pressure sensor, the low-pressure gauge, the air intake filter barrel and the pressure maintaining joint are all arranged on the gaseous refrigerant input pipe. External gaseous refrigerant can be input into the compressor for compression through the gaseous refrigerant input component. The low-pressure pressure sensor and the low-pressure gauge are used to detect the pressure of the gaseous refrigerant. The air intake filter barrel is used to remove impurities in the gaseous refrigerant. The pressure maintaining joint is used to maintain the pressure of the gaseous refrigerant input pipe.

[0020] Furthermore, the oil separator is provided with an oil temperature controller, an oil heater and an oil level controller for controlling the temperature and liquid level of the lubricating oil to achieve oil-gas separation.

[0021] Furthermore, a liquid supply assembly is provided on the liquid reservoir, which includes a liquid supply pipe, a liquid reservoir outlet valve, a liquid supply filter barrel, a liquid supply sight glass and a liquid supply valve. The liquid supply pipe is connected to the liquid reservoir, and the liquid reservoir outlet valve, the liquid supply filter barrel, the liquid supply sight glass and the liquid supply valve are all arranged on the liquid supply pipe to facilitate the discharge of the liquid in the liquid reservoir.

[0022] Furthermore, the liquid reservoir is also provided with a safety valve and a drain valve, and a liquid reservoir inlet valve is provided on the overflow pipe at one side close to the liquid reservoir.

[0023] The utility model has the following beneficial effects due to the adoption of the above technical solution:

[0024] The utility model can not only realize the high system integration of the evaporative cooling screw unit and improve the efficiency of the whole machine, but also facilitate transportation, so that there is a height difference between the evaporative cooling upper box and the screw unit skid, ensuring that the refrigerant overcomes the flow resistance of the pipeline, with high stability, and at the same time can reduce the construction difficulty of the project site and shorten the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The utility model is further described below in conjunction with the accompanying drawings:

[0026] Figure 1 This is a rendering of a separate thermosyphon evaporative cooling screw unit in the utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the utility model after the chassis is removed;

[0028] Figure 3 It is a schematic diagram of the connection between the screw unit skid and the evaporative cooling upper coil in the utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the integrated siphon tank in the utility model;

[0030] Figure 5 for Figure 4 Schematic diagram of the structure in direction A.

[0031] In the figure: 1- evaporative cooling upper box; 2- evaporative cooling lower box; 3- chassis; 4- screw unit skid; 5- integrated siphon tank; 501- tank body; 502- head; 503- oil cooling pipe; 505- reservoir pipe; 506- oil cooling return pipe; 507- siphon tank liquid inlet stop valve; 508- evaporative cooling liquid outlet; 509- siphon tank liquid outlet stop valve; 510- sight glass seat; 511- SGR sight glass; 512- balance port; 513- steel equal diameter tee; 514- de-evaporation cooling air inlet; 515- liquid storage tank balance interface; 6- liquid storage tank; 7- compressor; 8- low pressure pressure sensor; 9- low pressure gauge; 10- air suction filter barrel; 11- high and low pressure controller; 12- high pressure sensor; 13- high pressure gauge; 14- oil separator; 1401- oil temperature controller; 1402- oil heater; 1403- oil level controller; 15- first cut-off valve; 16-coarse oil filter; 17-second stop valve; 18-siphon oil cooling plate change; 19-first oil branch ball valve; 20-fine oil filter; 21-oil flow switch; 22-oil solenoid valve; 23-second oil branch ball valve; 24-sight glass; 25-stop check valve; 26-evaporative cooling upper coil; 27-first oil cooling fluorine stop valve; 28-oil cooling fluorine filter barrel; 29-oil cooling fluorine sight glass; 30-oil cooling fluorine solenoid valve; 31-first Two oil-cooled fluorine stop valves; 32-oil-cooled fluorine outlet stop valve; 33-liquid reservoir inlet valve; 34-liquid reservoir outlet valve; 35-liquid supply filter barrel; 36-liquid supply sight glass; 37-liquid supply valve; 38-safety valve; 39-drain valve; 40-pressure maintaining joint; 41-liquid reservoir balance pipe; 42-overflow pipe; 43-exhaust pipe; 44-return oil pipe; 45-rough oil pipe; 46-liquid refrigerant pipe; 47-gaseous refrigerant input pipe; 48-liquid supply pipe. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0035] like Figures 1 to 5 As shown, a separate thermosiphon evaporative cooling screw unit of the utility model includes an evaporative cooling upper box body 1, an evaporative cooling lower box body 2 and a chassis 3. The evaporative cooling lower box body 2 is connected to the evaporative cooling upper box body 1 and the chassis 3. The evaporative cooling upper box body 1 is located above the evaporative cooling lower box body 2 and the chassis 3.

[0036] An evaporative cooling upper coil 26 is provided in the evaporative cooling upper box body 1 and is connected to the chassis 3 through a pipeline.

[0037] A screw unit skid 4 is provided in the chassis 3, and the screw unit skid 4 includes at least one compressor 7, an oil separator 14, an integrated siphon tank 5, a liquid storage device 6 and a siphon oil cold plate exchanger 18. In this application, two compressors 7 are preferably used, and each compressor 7 is connected to a high and low pressure controller 11.

[0038] The compressor 7 is connected to a gaseous refrigerant input assembly to facilitate the input of external gaseous refrigerant.

[0039] The gaseous refrigerant input assembly includes a gaseous refrigerant input pipe 47, a low-pressure pressure sensor 8, a low-pressure gauge 9, an air suction filter barrel 10 and a pressure-maintaining joint 40. The gaseous refrigerant input pipe 47 is connected to the corresponding compressor 7. The low-pressure pressure sensor 8, the low-pressure gauge 9, the air suction filter barrel 10 and the pressure-maintaining joint 40 are all arranged on the gaseous refrigerant input pipe 47, and the air suction filter barrel 10 is close to the compressor 7. The external gaseous refrigerant can be input into the compressor 7 through the gaseous refrigerant input assembly for compression. The low-pressure pressure sensor 8 and the low-pressure gauge 9 are used to detect the pressure of the gaseous refrigerant. The air suction filter barrel 10 is used to remove impurities in the gaseous refrigerant. The pressure-maintaining joint 40 is used to maintain the pressure of the gaseous refrigerant input pipe 47.

[0040] The compressor 7 is connected to the oil separator 14 and the siphon oil cooling plate 18 through the exhaust assembly and the oil return assembly respectively.

[0041] The exhaust assembly includes an exhaust pipe 43, a high-pressure pressure sensor 12 and a high-pressure gauge 13. The compressor 7 is connected to the oil separator 14 through the exhaust pipe 43. The high-pressure pressure sensor 12 and the high-pressure gauge 13 are arranged in the exhaust pipe 43 to detect the pressure of the compressed gaseous refrigerant in the exhaust pipe 43. The high-pressure and low-pressure pressure sensors 8 are close to the compressor 7, and the high-pressure gauge 13 is close to the oil separator 14.

[0042] The oil return assembly includes an oil return pipe 44, a first oil branch ball valve 19, a fine oil filter 20, an oil flow switch 21, an oil solenoid valve 22, a second oil branch ball valve 23 and an oil sight glass 24. The siphon oil cold plate exchanger 18 is connected to the compressor 7 through the oil return pipe 44. The first oil branch ball valve 19, the fine oil filter 20, the oil flow switch 21, the oil solenoid valve 22, the second oil branch ball valve 23 and the oil sight glass 24 are all arranged on the oil return pipe 44, which is used to cool the hot oil after heat exchange in the siphon oil cold plate exchanger 18 and input it into the compressor 7, while controlling the flow rate of the hot oil.

[0043] The first oil branch ball valve 19 is close to the siphon oil cold plate 18, the oil sight glass 24 is close to the compressor 7, the oil flow switch 21 is arranged between the first oil branch ball valve 19 and the oil sight glass 24, a fine oil filter 20 is arranged between the first oil branch ball valve 19 and the oil flow switch 21, an oil solenoid valve 22 and a second oil branch ball valve 23 are arranged between the oil flow switch 21 and the oil sight glass 24, and the second oil branch ball valve 23 is close to one side of the oil sight glass 24.

[0044] The oil separator 14 is connected to the evaporative cooling upper coil 26 through a pipeline, and a stop check valve 25 is provided on one side of the pipeline close to the oil separator 14 .

[0045] The oil separator 14 is provided with an oil temperature controller 1401 , an oil heater 1402 and an oil level controller 1403 for controlling the temperature and level of the lubricating oil to achieve oil-gas separation. The oil heater 1402 is located below the oil temperature controller 1401 .

[0046] The oil separator 14 is connected to the siphon oil cooling plate 18 through a crude oil assembly, and the crude oil assembly includes a crude oil pipe 45, a first stop valve 15, a crude oil filter 16, and a second stop valve 17. The oil separator 14 is connected to the siphon oil cooling plate 18 through the crude oil pipe 45. The first stop valve 15, the crude oil filter 16, and the second stop valve 17 are all arranged on the crude oil pipe 45, and are used to input the hot lubricating oil at the bottom of the oil separator 14 into the siphon oil cooling plate 18, and exchange heat with the liquid refrigerant input from the bottom of the integrated siphon tank 5. The first stop valve 15 is close to the oil separator 14, the second stop valve 17 is close to the siphon oil cooling plate 18, and the crude oil filter 16 is located between the first stop valve 15 and the second stop valve 17.

[0047] The evaporative cooling upper coil 26 is connected to the integrated siphon tank 5 .

[0048] The integrated siphon tank 5 includes a tank body 501 and a sealing head 502. The upper and lower sealing heads 502 are arranged at the top and bottom of the tank body 501. The tank body 501 is provided with a liquid reservoir pipe 505, an oil cooling air return pipe 506, a sight glass seat 510 and a balance port 512. The oil cooling air return pipe 506 and the balance port 512 are located above the liquid reservoir pipe 505 and the sight glass seat 510. The sight glass seat 510 is provided with an SGR sight glass 511. The balance port 512 is connected to a steel equal-diameter tee 513. The steel equal-diameter tee 513 is provided with an evaporative cooling air inlet 514 and a liquid storage tank balance interface 515; the upper end cap 502 is connected with an evaporative cooling liquid outlet 508, on which a siphon tank liquid inlet stop valve 507 is provided; the lower end cap 502 is connected with an oil removal cooling pipe 503, on which a siphon tank liquid outlet stop valve 509 is provided. The design of the integrated siphon tank 5 is conducive to the integration of the screw unit skid 4, convenient transportation, and reduced construction difficulty.

[0049] A scale line is provided inside the integrated siphon tank 5, and below the scale line is liquid refrigerant. The liquid refrigerant at the bottom of the integrated siphon tank 5 goes to the siphon oil cold plate 18, exchanges heat with the hot oil, the hot oil becomes cold, the liquid refrigerant partially evaporates, and the gas-liquid mixture flows back to the upper part of the integrated siphon tank 5 for separation, and the gas condenses with the exhaust gas.

[0050] The middle part of the integrated siphon tank 5 is connected to the liquid reservoir 6 through an overflow pipe 42 , and a liquid reservoir inlet valve 33 is provided on one side of the overflow pipe 42 close to the liquid reservoir 6 .

[0051] The upper part of the integrated siphon tank 5 is connected to the evaporative cooling upper coil 26, the siphon oil cooling plate 18 and the liquid reservoir 6 through the liquid reservoir balance pipe 41. An oil cooling fluorine outlet stop valve 32 is provided on the side of the liquid reservoir balance pipe 41 close to the siphon oil cooling plate 18.

[0052] The lower part of the integrated siphon tank 5 is connected to the siphon oil cooling plate 18 through a liquid refrigerant component.

[0053] The liquid refrigerant component includes a liquid refrigerant pipe 46, a first oil-cooled fluorine stop valve 27, an oil-cooled fluorine filter barrel 28, an oil-cooled fluorine sight glass 29, an oil-cooled fluorine solenoid valve 30 and a second oil-cooled fluorine stop valve 31. The integrated siphon tank 5 is connected to the siphon oil-cooled plate changer 18 through the liquid refrigerant pipe 46. The first oil-cooled fluorine stop valve 27, the oil-cooled fluorine filter barrel 28, the oil-cooled fluorine sight glass 29, the oil-cooled fluorine solenoid valve 30 and the second oil-cooled fluorine stop valve 31 are all arranged on the liquid refrigerant pipe 46, which is used to control the liquid refrigerant in the integrated siphon tank 5 to enter the siphon oil-cooled plate changer 18.

[0054] The first oil-cooled fluorine stop valve 27 is close to the integrated siphon tank 5, the second oil-cooled fluorine stop valve 31 is close to the siphon oil-cooled plate exchanger 18, the oil-cooled fluorine sight glass 29 is located between the first oil-cooled fluorine stop valve 27 and the second oil-cooled fluorine stop valve 31, the first oil-cooled fluorine stop valve 27 and the oil-cooled fluorine sight glass 29 are provided with an oil-cooled fluorine filter barrel 28, and an oil-cooled fluorine solenoid valve 30 is provided between the oil-cooled fluorine sight glass 29 and the second oil-cooled fluorine stop valve 31.

[0055] The liquid reservoir 6 is provided with a liquid supply assembly, a safety valve 38 and an emptying valve 39. The liquid supply assembly includes a liquid supply pipe 48, a liquid reservoir outlet valve 34, a liquid supply filter barrel 35, a liquid supply sight glass 36 and a liquid supply valve 37. The liquid supply pipe 48 is connected to the liquid reservoir 6. The liquid reservoir outlet valve 34, the liquid supply filter barrel 35, the liquid supply sight glass 36 and the liquid supply valve 37 are all arranged on the liquid supply pipe 48, so as to facilitate the discharge of the liquid in the liquid reservoir 6.

[0056] Through the design of the above structure, not only can the system of the evaporative cooling screw unit be highly integrated and the efficiency of the whole machine be improved, but also transportation is convenient, so that there is a height difference between the evaporative cooling upper box 1 and the screw unit skid 4, ensuring that the refrigerant overcomes the flow resistance of the pipeline and has high stability. At the same time, it can reduce the construction difficulty of the project site and shorten the construction period.

[0057] When the utility model is actually used:

[0058] The external gaseous refrigerant enters two compressors 7 in two ways, is compressed into high-temperature and high-pressure gaseous refrigerant, and then enters the oil separator 14. The entrained lubricating oil is separated at the bottom of the oil separator 14, and the remaining refrigerant enters the evaporative cooling upper coil 26 for condensation. The condensed liquid refrigerant enters the integrated siphon tank 5;

[0059] The liquid refrigerant will first fill the integrated siphon tank 5 to the scale line, then overflow through the overflow pipe 42 into the liquid storage tank 6, and then be supplied to the evaporator through the liquid supply component. The liquid refrigerant below the scale line of the integrated siphon tank 5 will enter the siphon oil cold plate exchanger 18 through the liquid refrigerant component;

[0060] The hot oil at the bottom of the oil separator 14 enters the siphon oil cooling plate 18 through the crude oil assembly, and exchanges heat with the liquid refrigerant flowing from the bottom of the integrated siphon tank 5. The hot oil cooling is divided into two paths and enters the compressor 7 through the oil return assembly respectively;

[0061] The liquid refrigerant in the siphon oil cooling plate 18 absorbs heat and evaporates. Under the action of siphon, it passes through the oil cooling fluorine outlet stop valve 32 and enters the upper space of the integrated siphon tank 5 for separation. The liquid state is deposited, and the gas state enters the inlet of the evaporative cooling upper coil 26 and condenses in the evaporative cooling.

[0062] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A separate thermosyphon evaporative cooling screw unit, comprising An evaporative cooling upper box body, wherein the evaporative cooling upper box body is provided with an evaporative cooling upper coil; An evaporative cooling lower cabinet; and a chassis, wherein the evaporative cooling lower box is connected to the evaporative cooling upper box and the chassis; Features: A screw unit skid is provided in the chassis, and the screw unit skid includes at least one compressor, an oil separator, an integrated siphon tank, a liquid reservoir and a siphon oil cold plate exchanger. The compressor is connected to the oil separator and the siphon oil cold plate exchanger through an exhaust assembly and an oil return assembly, respectively. The oil separator is connected to the evaporative cooling upper coil, and the oil separator is connected to the siphon oil cold plate exchanger through a crude oil assembly. The evaporative cooling upper coil is connected to the integrated siphon tank, and the middle part of the integrated siphon tank is connected to the liquid reservoir through an overflow pipe. The upper part of the integrated siphon tank is connected to the evaporative cooling upper coil, the siphon oil cold plate exchanger and the liquid reservoir through a liquid reservoir balance pipe, and the lower part of the integrated siphon tank is connected to the siphon oil cold plate exchanger through a liquid refrigerant assembly.

2. A separate thermosyphon evaporative cooling screw unit according to claim 1, characterized in that: The exhaust assembly includes an exhaust pipe, a high-pressure pressure sensor and a high-pressure gauge. The compressor is connected to the oil separator through the exhaust pipe. The high-pressure pressure sensor and the high-pressure gauge are arranged on the exhaust pipe.

3. A separate thermosyphon evaporative cooling screw unit according to claim 1, characterized in that: The oil return assembly includes an oil return pipe, a first oil branch ball valve, a fine oil filter, an oil flow switch, an oil solenoid valve, a second oil branch ball valve and an oil sight glass. The siphon oil cold plate is connected to the compressor through the oil return pipe. The first oil branch ball valve, the fine oil filter, the oil flow switch, the oil solenoid valve, the second oil branch ball valve and the oil sight glass are all arranged on the oil return pipe.

4. A separate thermosyphon evaporative cooling screw unit according to claim 1, characterized in that: The crude oil assembly includes a crude oil pipe, a first stop valve, a crude oil filter and a second stop valve. The oil separator is connected to the siphon oil cooling plate through the crude oil pipe. The first stop valve, the crude oil filter and the second stop valve are all arranged on the crude oil pipe.

5. A separate thermosyphon evaporative cooling screw unit according to claim 1, characterized in that: The liquid refrigerant assembly includes a liquid refrigerant pipe, a first oil-cooled fluorine stop valve, an oil-cooled fluorine filter barrel, an oil-cooled fluorine sight glass, an oil-cooled fluorine solenoid valve and a second oil-cooled fluorine stop valve. The integrated siphon tank is connected to the siphon oil-cooled plate exchanger through the liquid refrigerant pipe. The first oil-cooled fluorine stop valve, the oil-cooled fluorine filter barrel, the oil-cooled fluorine sight glass, the oil-cooled fluorine solenoid valve and the second oil-cooled fluorine stop valve are all arranged on the liquid refrigerant pipe.

6. A separate thermosyphon evaporative cooling screw unit according to claim 1, characterized in that: The integrated siphon tank comprises a tank body and a head, wherein the upper and lower heads are arranged at the top and bottom of the tank body, and the tank body is provided with a reservoir pipe, an oil cooling return pipe, a sight glass seat and a balance port, wherein the oil cooling return pipe and the balance port are located above the reservoir pipe and the sight glass seat, and the sight glass seat is provided with an SGR sight glass, and the balance port is connected with a steel equal-diameter tee, and the steel equal-diameter tee is provided with an evaporative cooling air inlet and a reservoir balance interface; the head located at the top is connected with an evaporative cooling liquid outlet, and a siphon tank liquid inlet stop valve is provided on the evaporative cooling liquid outlet; the head located at the bottom is connected with an oil cooling pipe, and a siphon tank liquid outlet stop valve is provided on the oil cooling pipe.

7. A separate thermosyphon evaporative cooling screw unit according to claim 1, characterized in that: The compressor is connected to a gaseous refrigerant input component, which includes a gaseous refrigerant input pipe, a low-pressure pressure sensor, a low-pressure gauge, an air intake filter barrel and a pressure maintaining joint. The gaseous refrigerant input pipe is connected to the compressor, and the low-pressure pressure sensor, the low-pressure gauge, the air intake filter barrel and the pressure maintaining joint are all arranged on the gaseous refrigerant input pipe.

8. The separate thermosyphon evaporative cooling screw unit according to claim 1, characterized in that: The oil separator is provided with an oil temperature controller, an oil heater and an oil level controller for controlling the temperature and liquid level of the lubricating oil.

9. A separate thermosyphon evaporative cooling screw unit according to claim 1, characterized in that: The liquid reservoir is provided with a liquid supply assembly, which includes a liquid supply pipe, a liquid reservoir outlet valve, a liquid supply filter barrel, a liquid supply sight glass and a liquid supply valve. The liquid supply pipe is connected to the liquid reservoir, and the liquid reservoir outlet valve, the liquid supply filter barrel, the liquid supply sight glass and the liquid supply valve are all arranged on the liquid supply pipe.

10. The separate thermosyphon evaporative cooling screw unit according to claim 1, characterized in that: The liquid reservoir is also provided with a safety valve and a drain valve, and a liquid reservoir inlet valve is provided on the side of the overflow pipe close to the liquid reservoir.

Images