Cooling system, vapor compressor apparatus and method

Abstract

The invention discloses a cooling system, water vapor compressor equipment and a method, and the cooling system comprises a cooling pipeline; the spraying device comprises a water pump and a nozzle; the nozzle is communicated with the cooling pipeline so as to spray cooling water mist into the cooling pipeline under the pumping of the water pump; wherein the cooling pipeline is provided with a turbulent flow structure, the turbulent flow structure is used for driving the cooling water mist to be mixed with steam discharged into the cooling pipeline from the compression part located on the upstream, mixing and heat exchange of the steam and the cooling water mist can be promoted, and the mixing efficiency of the steam and the cooling water mist can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of water vapor compressors, and in particular to a cooling system, water vapor compressor equipment and a method. Background Art

[0002] In recent years, with the continuous development of steam compressor technology, steam compressors have been widely used in daily life and industry, such as in air conditioning, industrial refrigeration systems, etc. In multi-stage steam compressors, the exhaust temperature of each stage of the steam compression module is high after steam compression, and the superheat is large, so external water supply is used for spraying to cool the inter-stage exhaust. However, the effect of mixing spray with water vapor is not good, resulting in low efficiency of water vapor cooling. Summary of the invention

[0003] The embodiments of the present application provide a cooling system, a water vapor compressor device and a method, which can promote the mixing and heat exchange of water vapor and cooling water mist, and improve the mixing efficiency of water vapor and cooling water mist.

[0004] In a first aspect, an embodiment of the present application provides a cooling system, comprising:

[0005] Cooling ducts; and

[0006] A spraying device, comprising a water pump and a nozzle; the nozzle is connected to the cooling pipe to spray cooling water mist into the cooling pipe under the pumping of the water pump;

[0007] Wherein, a turbulent structure is arranged on the cooling pipeline, and the turbulent structure is used to drive the cooling water mist and the steam discharged into the cooling pipeline from the upstream compression part to mix.

[0008] In some embodiments, the spoiler structure includes a first spoiler and a second spoiler provided in the cooling pipe, wherein the first spoiler and the second spoiler are arranged sequentially in an extension direction of the cooling pipe;

[0009] A plurality of first flow guide channels arranged at intervals are formed in the first flow spoiler; a plurality of first flow guide channels arranged at intervals are formed in the first flow spoiler;

[0010] The first flow guiding channel and the second flow guiding channel are both flat, and a thickness direction of the first flow guiding channel and a thickness direction of the second flow guiding channel form an angle.

[0011] In some embodiments, a thickness direction of the first flow guiding channel is perpendicular to a thickness direction of the second flow guiding channel.

[0012] In some embodiments, a thickness of the first flow guiding channel is greater than or equal to a thickness of the second flow guiding channel.

[0013] In some embodiments, the thickness of the first flow guiding channel decreases along the extension direction of the cooling pipe; and / or

[0014] The thickness of the second flow guiding channel increases along the extending direction of the cooling pipe.

[0015] In some embodiments, there is a gap between the first spoiler and the second spoiler along the extending direction of the cooling pipe.

[0016] In some embodiments, there is no interval between the first spoiler and the second spoiler along the extending direction of the cooling pipe.

[0017] In some embodiments, the first spoiler portion includes a plurality of first spoilers disposed at intervals, and the first guide channel is formed between two adjacent first spoilers; the second spoiler portion includes a plurality of second spoilers disposed at intervals, and the first guide channel is formed between two adjacent second spoilers.

[0018] In some embodiments, at least one of the first spoiler and the second spoiler is a corrugated plate;

[0019] Alternatively, both the first spoiler and the second spoiler are corrugated plates, and the first spoiler and the second spoiler have different shapes;

[0020] Alternatively, a first protruding structure is further provided on the first spoiler and / or the second spoiler.

[0021] In some embodiments, the cooling pipe includes a mixing pipe section, the mixing pipe section is a Venturi tube structure and is formed as the turbulent structure, and the nozzle is connected to the throat position of the Venturi tube.

[0022] In some embodiments, the spoiler structure includes a plurality of second protrusion structures, which protrude from the inner wall surface of the cooling pipe and are arranged at intervals along the extension direction of the cooling pipe.

[0023] In a second aspect, the present application also provides a water vapor compressor device, including:

[0024] at least two compression sections; and

[0025] A cooling system as described above;

[0026] The cooling pipeline connects the compression parts of two adjacent stages, and the nozzle is connected to the cooling pipeline to spray cooling water mist into the cooling pipeline under the pumping of the water pump;

[0027] Wherein, a turbulent structure is arranged on the cooling pipeline, and the turbulent structure is used to drive the cooling water mist and the steam discharged into the cooling pipeline from the upstream compression part to mix.

[0028] In some embodiments, the spray device further includes a control valve, which is connected to the water pump and the nozzle and is configured to adjust the spray flow rate of the nozzle;

[0029] The water vapor compressor equipment also includes:

[0030] a detection assembly configured to detect the superheat of gas between the spray device and the next-stage compression section of the compression section;

[0031] The controller is respectively connected to the detection component and the control valve signal, and is configured to adjust the spray flow of the nozzle based on the gas superheat and the preset superheat until the gas superheat is equal to the preheating superheat.

[0032] In some embodiments, a gas-liquid separator is further included, wherein the inlet of the gas-liquid separator is connected to the cooling pipe and is located downstream of the flow-disturbing structure, the liquid outlet of the gas-liquid separator is connected to the spray device, and the gas outlet is connected to the next-level compression part of the compression part.

[0033] In some embodiments, two liquid level sensors are further included. The two liquid level sensors are installed on the gas-liquid separator and are spaced apart in the height direction. Both of the two first liquid level sensors are connected to the control valve signal.

[0034] The controller is configured to: obtain the water level height in the gas-liquid separator through the liquid level sensor, and if the water level height and a preset value meet the set conditions, control the control valve to adjust the spray flow of the nozzle.

[0035] In some embodiments, the spray device also includes a water replenishment component and a heat recovery component, the first liquid inlet of the heat recovery component is connected to the liquid outlet of the gas-liquid separator, the second liquid inlet of the heat recovery component is connected to the water replenishment component, and the liquid outlet of the heat recovery component is connected to the water pump.

[0036] In some embodiments, a water tank and two second liquid level sensors are further included, wherein the water inlet of the water tank is connected to the liquid outlet pipe of the gas-liquid separator, and the water outlet of the water tank is connected to the water pump. The two second liquid level sensors are arranged in the water tank and spaced apart in the height direction, and the two second liquid level sensors are used to detect the liquid level in the water tank.

[0037] In a third aspect, an embodiment of the present application provides an interstage cooling method for a water vapor compressor, wherein the water vapor compressor equipment comprises a multi-stage compression section, a cooling system and a gas-liquid separator, wherein the cooling system comprises a cooling pipe and a spray device, wherein the cooling pipe connects two adjacent stages of the compression sections, wherein the spray device comprises a water pump, a control valve and a nozzle, wherein the nozzle is connected to the cooling pipe to spray cooling water mist into the cooling pipe under the pumping of the water pump, wherein a turbulent flow structure is provided on the cooling pipe, wherein the turbulent flow structure is used to drive the cooling water mist and the steam discharged into the cooling pipe from the upstream compression section to perform mixed heat exchange, wherein the inlet of the gas-liquid separator is connected to the cooling pipe, wherein the liquid outlet pipe of the gas-liquid separator is connected to the control valve through the water pump, and the gas outlet pipe of the gas-liquid separator is connected to the next stage of the compression section of the compression section;

[0038] The method comprises:

[0039] detecting the gas temperature and the gas pressure of the gas outlet pipeline, and determining the gas superheat based on the gas temperature and the gas pressure;

[0040] Obtaining a preset superheat interval for the gas outlet pipeline, and adjusting the liquid flow of the control valve based on the gas superheat and the preset superheat interval

[0041] Based on the water vapor compressor equipment of the embodiment of the present application, a spray device is arranged between the compression section of the water vapor compressor and the next-stage compression section, so as to realize spray cooling of the superheated steam discharged from the compression section and not yet entering the next-stage compression section. By adding a turbulent structure between two adjacent stages of compression sections, the mixing and heat exchange of water vapor and cooling water mist can be promoted, and the mixing efficiency of water vapor and cooling water mist can be improved within a shorter inter-stage distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0043] Figure 1 A schematic structural diagram of a water vapor compressor device according to a first embodiment of the present application;

[0044] Figure 2 A schematic structural diagram of a spoiler structure of a first embodiment provided in an embodiment of the present application;

[0045] Figure 3 A schematic cross-sectional view of a spoiler structure of a second embodiment provided in an embodiment of the present application;

[0046] Figure 4 A schematic cross-sectional view of a spoiler structure of a third embodiment provided in an embodiment of the present application;

[0047] Figure 5 A schematic structural diagram of a water vapor compressor device according to a second embodiment of the present application;

[0048] Figure 6 A schematic flow chart of an interstage cooling method for a water vapor compressor provided in an embodiment of the present application;

[0049] Figure 7 A schematic diagram of a flow chart of regulating liquid flow with a flow regulating valve provided in an embodiment of the present application;

[0050] Figure 8 A schematic diagram of a process for adjusting the height of a water storage liquid level provided in an embodiment of the present application;

[0051] Fig. 9 A schematic diagram of another process for adjusting the height of the water storage liquid level provided in an embodiment of the present application;

[0052] Fig.10 A schematic diagram of the structure of another water vapor compressor provided in an embodiment of the present application;

[0053] Fig.11 A schematic diagram of a process for adjusting the liquid level height of a water tank provided in an embodiment of the present application;

[0054] Fig.12 A schematic diagram of another process for adjusting the liquid level height of a water tank provided in an embodiment of the present application;

[0055] Fig.13 A schematic diagram of a process for water supply treatment of a spray water pump provided in an embodiment of the present application;

[0056] Fig.14 A schematic diagram of the structure of another water vapor compressor provided in an embodiment of the present application;

[0057] Fig.15 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0058] Description of Figure Numbers:

[0059] 2000, water vapor compressor equipment; 2100, compression part; 2200, cooling pipe; 2210, spoiler structure; 2211, first spoiler; 2212, second spoiler; 2213, first spoiler; 2214, second spoiler; 2215, first guide channel; 2216, second guide channel; 2217, mixing pipe section; 2218, corrugated plate; 2300, spray device; 2310, water pump; 2320, control valve; 2330, nozzle; 2400, gas-liquid separator; 2410, first liquid level sensor; 2510, water replenishment component; 2520, heat recovery component; 2600, water tank; 2630, second liquid level sensor; 2700, steam trap;

[0060] 1100, electronic device; 1101, processor; 1104, network interface; 1103, user interface; 1105, memory; 1102, communication bus.

[0061] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0062] In order to make the objectives, technical solutions and advantages of the present invention more clear, the following part will further describe the embodiments of the present application in detail in conjunction with the accompanying drawings.

[0063] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are only examples of devices and methods consistent with some aspects of the present invention as detailed in the attached claims.

[0064] In the description of the present invention, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previously associated objects are in an "or" relationship.

[0065] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0066] In the related art, a multi-stage steam compressor includes a multi-stage compression section, each stage of the compression section is used to pressurize and heat the steam. The steam is pressurized and heated in sequence through the multi-stage compression section, so that the required steam pressure is obtained by step-by-step pressurization.

[0067] Usually, between the compression section and the next compression section corresponding to the compression section, that is, between the stages, the interstage exhaust gas temperature corresponding to the water vapor compression is high and the superheat is large. If the exhaust gas is not cooled, the inlet temperature of the compression section of the subsequent stage in the multi-stage water vapor compressor will be high, which will increase the compression power consumption. In addition, the high exhaust gas temperature also puts forward higher material requirements for the gearbox, seals and other parts of the centrifugal compressor, increasing the material cost, so it is necessary to cool the superheated steam at the outlet of each stage.

[0068] Spray cooling is an efficient cooling method that uses spray water to absorb the heat of superheated steam and vaporize it, so that the superheated steam between stages is reduced to saturated or near-saturated steam. This method converts the sensible heat of superheated steam into latent heat and retains it in the steam, thereby reducing compression power consumption, increasing the outlet steam volume, and improving system energy efficiency. When the spray water between stages is completely vaporized, the following formula is theoretically satisfied: m1h1+mwhw=h2(mw+m1); where the flow rate of superheated steam is m1, the heat of superheated steam is h1, the flow rate of spray water is mw, the heat of spray water is hw, the flow rate of steam cooled to saturated or near-saturated state is mw+m1, and the heat of steam cooled to saturated or near-saturated state is h2.

[0069] However, when the inter-stage distance of a multi-stage steam compressor is limited, it is impossible to achieve complete vaporization of the spray water through the spray water, making it difficult for the spray water to evaporate completely, resulting in the phenomenon of liquid vapor impacting the impeller, reducing its life. In order to ensure the stable operation of the multi-stage steam compressor, a steam-water separator can be added between stages before the inter-stage spray enters the next compression section. In the process of mixing low-temperature spray water and superheated steam, the spray first absorbs the heat of the superheated steam to become saturated water, and the saturated water then absorbs the heat of the superheated steam to evaporate, that is, the water discharged from the steam-water separator is often high-temperature saturated water. If the high-temperature saturated water that has not evaporated in the spray water is directly discharged through the steam-water separator, this part of the heat cannot be retained in the system to generate more steam, thereby limiting the improvement of the system's energy efficiency.

[0070] See also Figure 1The embodiment of the present application proposes a water vapor compressor device 2000, which includes at least two compression parts 2100 and a cooling system. The total number of stages of the compression part 2100 of the water vapor compressor can be 2 stages, 3 stages, 4 stages, and multiple stages. The compression parts 2100 of each stage are used to pressurize and heat the steam, and the steam is pressurized and heated in turn by the multi-stage compression parts 2100, so as to obtain the required steam pressure by step-by-step pressurization. The cooling system is arranged between two adjacent stages of the compression parts 2100, and performs heat exchange and cooling on the steam.

[0071] The cooling system includes a cooling pipe 2200 and a spray device 2300. The cooling pipe 2200 connects two adjacent compression parts 2100. The spray device 2300 includes a water pump 2310 and a nozzle 2330; the nozzle 2330 is connected to the cooling pipe 2200 to spray cooling water mist into the cooling pipe 2200 under the pumping of the water pump 2310; the cooling pipe 2200 is provided with a spoiler structure 2210, which is used to drive the cooling water mist and the steam discharged into the cooling pipe 2200 from the upstream compression part 2100 to mix and exchange heat, thereby achieving cooling.

[0072] In some embodiments, see Figure 2 The spoiler structure 2210 includes a first spoiler 2211 and a second spoiler 2212 arranged in the cooling pipe 2200, and the first spoiler 2211 and the second spoiler 2212 are arranged sequentially in the extension direction of the cooling pipe 2200; a plurality of first guide channels 2215 arranged at intervals are formed in the first spoiler 2211, and a plurality of second guide channels 2216 arranged at intervals are formed in the second spoiler 2212; wherein the first guide channels 2215 and the second guide channels 2216 are both flatly arranged, and the thickness direction of the first guide channel 2215 and the thickness direction of the second guide channel 2216 have an angle. In some examples, the first spoiler 2211 includes a plurality of first spoilers 2213 disposed at intervals, and a first guide channel 2215 is formed between two adjacent first spoilers 2213. The second spoiler 2212 includes a plurality of second spoilers 2214 disposed at intervals, and a first guide channel 2215 is formed between two adjacent second spoilers 2214. It can be understood that by changing the extension direction of the first spoiler 2213 and the second spoiler 2214, the thickness direction of a guide channel and the thickness direction of the second guide channel 2216 can have an angle.

[0073] With such arrangement, the water vapor discharged from the compression section 2100 of the previous stage will first pass through the first guide channel 2215 and then enter the second guide channel 2216, and the thickness direction of the first guide channel 2215 and the thickness direction of the second guide channel 2216 have an angle, that is, the water vapor will change its movement direction when switching from the first guide channel 2215 to the second guide channel 2216 during its flow.

[0074] In some embodiments, there is a gap between the first spoiler 2211 and the second spoiler 2212 along the extension direction of the cooling pipe 2200, so that the soda-water mixture will be diverted when entering the first spoiler 2211, then merge at the gap, and then be diverted when entering the second spoiler 2212. It should be noted that when defining a first spoiler 2211 and a second spoiler 2212 as a group, the present application can set one group or multiple groups. Specifically, when switching from the first guide channel 2215 to the second guide channel 2216, the soda-water mixture is diverted, and the diverted soda-water mixture will merge again when entering the next spoiler unit, and the continuous merging and diversion promotes the full mixing of the soda-water mixture. At the same time, the water vapor and the cooling water mist exchange heat violently, realizing the rapid cooling of the water vapor and the rapid heating and evaporation of the cooling water mist.

[0075] In some embodiments, there is no gap between the first spoiler 2211 and the second spoiler 2212 along the extension direction of the cooling pipe 2200, so that the cooling pipe 2200 can be arranged more compactly, while achieving effective mixing and heat exchange of cooling water mist with water vapor, it can also save space and reduce the overall length of the cooling pipe 2200.

[0076] To further improve the mixing effect of water vapor and cooling mist, please refer again to Figure 2 In some embodiments, the thickness direction of the first guide channel 2215 is perpendicular to the thickness direction of the second guide channel 2216. In this way, the first guide channel 2215 and the second guide channel 2216 have a better water vapor diversion effect, thereby improving the mixing effect of water vapor and cooling spray.

[0077] In order to further improve the mixing effect of water vapor and cooling water mist, in some embodiments, the thickness of the first guide channel 2215 is greater than or equal to the thickness of the second guide channel 2216. In this way, after the water vapor flows from the first guide channel 2215 to the second guide channel 2216, the flow rate of the fluid will be increased, and the turbulence will be greatly improved. By relying on high-speed cutting and mixing of the vapor-liquid mixture, the full mixing of the vapor-water mixture is promoted. Among them, the thickness of the first guide channel 2215 is greater than or equal to the thickness of the second guide channel 2216, which can be formed by setting the number of the first spoiler 2213 and the second spoiler 2214 in the cooling pipe 2200, and can also be formed by setting the thickness of the first spoiler 2213 and the second spoiler 2214.

[0078] In some embodiments, the thickness of the first flow guide channel 2215 decreases along the extension direction of the cooling pipe 2200. In this way, the velocity of the soda-water mixture will gradually increase when flowing in the first flow guide channel 2215, and the turbulence will be greatly improved. By cutting and mixing the soda-liquid mixture at high speed, when the soda-water mixture flows to the second flow guide channel 2216, it has a greater turbulence when diverting, which promotes the full mixing of the soda-water mixture. Among them, the thickness of the first flow guide channel 2215 decreases along the extension direction of the cooling pipe 2200, which can be formed by the diameter of the cooling pipe 2200, or by the thickness of the first spoiler 2213 mentioned above.

[0079] In some embodiments, the thickness of the second flow guide channel 2216 increases along the extension direction of the cooling pipe 2200, so that the steam-water mixture can change speed during the flow process, thereby improving the mixing effect of water vapor and cooling water mist. It can be understood that in the scheme where the thickness of the first flow guide channel 2215 decreases along the extension direction of the cooling pipe 2200, and the thickness of the second flow guide channel 2216 increases along the extension direction of the cooling pipe 2200, the steam-water mixture can continuously change speed during the flow process, thereby promoting the full mixing of the steam-water mixture.

[0080] In some embodiments, see Figure 3 At least one of the first spoiler 2213 and the second spoiler 2214 is a corrugated plate 2218; the corrugated plate 2218 causes the velocity and pressure of the steam-water mixture flow path to change, and can also change the flow direction or distribution of the steam-water mixture, thereby causing turbulence. Such turbulence is conducive to increasing the contact between water vapor and cooling water mist, thereby improving the cooling effect of water vapor.

[0081] Furthermore, the first spoiler 2213 and the second spoiler 2214 are both corrugated plates 2218, and the first spoiler 2213 and the second spoiler 2214 have different shapes. In this way, the velocity and pressure of the steam-water mixture on the flow path can be changed differently in the first guide channel 2215 and the second guide channel 2216, further improving the cooling effect of the water vapor.

[0082] In some embodiments, the first spoiler 2213 is provided with a first protruding structure; or the second spoiler 2214 is provided with a first protruding structure; or the first spoiler 2213 and the second spoiler 2214 are provided with a first protruding structure. The first protruding structure can be a convex point, a plate, a column, a cone, etc., and the present application does not limit the specific form of the first protruding structure. By providing the first protruding structure, the velocity and pressure on the flow path of the soda-water mixture can also be changed, and the direction or distribution of the flow of the soda-water mixture can also be changed, thereby causing the generation of turbulence and promoting the full mixing of the soda-water mixture.

[0083] In some embodiments, the spoiler structure 2210 includes a plurality of second protrusion structures, which protrude from the inner wall surface of the cooling pipe 2200 and are arranged at intervals along the extension direction of the cooling pipe 2200. The second protrusion structures can be set in the form of the first protrusion structures.

[0084] In some embodiments, see Figure 4 The cooling pipe 2200 includes a mixing pipe section 2217, which is a venturi tube structure and is formed as a turbulent structure 2210, and the nozzle 2330 is connected to the throat of the venturi tube. Specifically, when the airflow passes through the venturi tube, it will pass through a contracted cross section, which will increase the gas flow rate and greatly improve the turbulence. By cutting and mixing the gas-liquid mixture at a high speed, the gas-water mixture is fully mixed.

[0085] It should be noted that the first spoiler 2211, the second spoiler 2212 and the mixing pipe section 2217 of the present application can be arranged in combination. For example, the high-speed enhanced mixing of water vapor and cooling water mist can be first utilized by the mixing pipe section 2217, and then the steam-water mixture can be continuously diverted and merged through the first spoiler 2211 and the second spoiler 2212, so that the strong water vapor and cooling water mist are fully mixed and heat exchanged.

[0086] In some embodiments, see Figure 1The water vapor compressor device 2000 further includes a gas-liquid separator 2400, the inlet of the gas-liquid separator 2400 is connected to the cooling pipe 2200 and is located downstream of the spoiler structure 2210, the liquid outlet of the gas-liquid separator 2400 is connected to the spray device 2300, and the gas outlet is connected to the next-stage compression part 2100 of the compression part 2100. In the case where the cooling water mist sprayed by the spray device 2300 does not fully exchange heat with the water vapor for evaporation, the cooling water mist can flow to the gas-liquid separator 2400, so as to prevent the water mist droplets from entering the next-stage compression part 2100 and prevent the occurrence of liquid hammer. At the same time, after the gas-liquid separator 2400 is set, the spray volume of the cooling water mist can be increased, thereby increasing the steam-water heat exchange area, further enhancing the heat exchange and achieving the cooling target; finally, the unevaporated spray in the steam is efficiently separated by the steam-water separator to become low superheated dry steam, and then enters the next stage compression part 2100 for compression. The inter-stage cooling of compressors with more stages is similar, and so on.

[0087] In some embodiments, please refer to Figure 1 The spray device 2300 further includes a control valve 2320, which is connected to the water pump 2310 and the nozzle 2330 and is configured to adjust the spray flow rate of the nozzle 2330. The water vapor compressor device 2000 further includes a detection component and a controller. The detection component is configured to detect the gas superheat between the spray device 2300 and the next-stage compression part 2100 of the compression part 2100. The controller is connected to the detection component and the control valve 2320 signals respectively, and is configured to adjust the spray flow rate of the nozzle 2330 based on the gas superheat and the preset superheat until the gas superheat is equal to the preheating superheat.

[0088] The detection assembly may include a temperature sensor and a pressure sensor disposed in the cooling pipe 2200. The pressure sensor may be Figure 1 Component P and temperature sensor in Figure 1 Component T in the cooling pipe 2200 detects the gas temperature of the cooling pipe 2200 based on the temperature sensor, and detects the gas pressure of the cooling pipe 2200 based on the pressure sensor. Afterwards, the gas superheat is determined based on the gas temperature and the gas pressure. The gas superheat here is the temperature difference between the actual temperature of the gas (gas temperature) and the liquid-to-gas phase transition temperature of the phase transition from the liquid phase to the gas phase. The liquid-to-gas phase transition temperature can be obtained by looking up the table or calculating based on the gas pressure and the corresponding liquid type. For example, when the gas pressure is 1 atmosphere, the liquid-to-gas phase transition temperature of water is 100°C. After obtaining the gas temperature and obtaining the current liquid-to-gas phase transition temperature through the gas pressure, the gas superheat is obtained by subtracting the gas temperature based on the liquid-to-gas phase transition temperature.

[0089] The control valve 2320 adjusts the flow of the nozzle 2330 of the spray device 2300 according to the gas superheat and the preset superheat. It can be understood that when the gas superheat is greater than the preset superheat, the spray flow is increased, and when the gas superheat is less than the preset superheat, the spray flow is reduced, and when the gas superheat is equal to the preset superheat, the current spray flow is maintained.

[0090] In some embodiments, please refer to Figure 6 The water vapor compressor device 2000 also includes two first liquid level sensors 2410, which are installed on the gas-liquid separator 2400 and are spaced apart in the height direction. Both first liquid level sensors 2410 are connected to the control valve 2320 by signal. Specifically, the two first liquid level sensors 2410 can be set at the highest value and the lowest value of the preset value of the water storage level height. When the liquid level is higher than the first liquid level sensor 2410 at the top, it means that the liquid level is higher than the preset highest value. When the liquid level is higher than the first liquid level sensor 2410 at the bottom, it means that the liquid level is higher than the preset lowest value. The controller obtains the water storage level height in the gas-liquid separator 2400 through the two first liquid level sensors 2410. If the water storage level height and the preset value meet the set conditions, the control valve 2320 is controlled to adjust the spray flow of the nozzle 2330.

[0091] In some embodiments, please refer to Fig.14 The spray device 2300 further includes a water replenishment component 2510 and a heat recovery component 2520. The first liquid inlet of the heat recovery component 2520 is connected to the liquid outlet of the gas-liquid separator 2400, the second liquid inlet of the heat recovery component 2520 is connected to the water replenishment component 2510, and the liquid outlet of the heat recovery component 2520 is connected to the water pump 2310. The replenishment liquid is transported to the second liquid inlet through the water replenishment component 2510, and the discharged liquid and the replenishment liquid are exchanged for liquid heat energy in the heat recovery component 2520, and the liquid is transported to the water pump 2310, and the cooling water mist is sprayed into the cooling pipe 2200.

[0092] In some embodiments, see Fig.10 The water vapor compressor further includes a water tank 2600, the water inlet of the water tank 2600 is connected to the liquid outlet pipe of the gas-liquid separator 2400, and the water outlet of the water tank 2600 is connected to the water pump 2310. A steam trap 2700 is also provided between the pipes connecting the water tank 2600 and the gas-liquid separator 2400, and a second liquid level sensor 2630 is provided on the water tank 2600, and the second liquid level sensor 2630 is used to detect the liquid level height in the water tank 2600.

[0093] In a second aspect, the present application also provides an interstage cooling method for a water vapor compressor device. Figure 7A flow chart of an interstage cooling method for a water vapor compressor device provided in an embodiment of the present application. The execution subject of the embodiment of the present application can be a water vapor compressor that executes the interstage cooling method for the water vapor compressor device, or a processor in the water vapor compressor that executes the interstage cooling method for the water vapor compressor, or an interstage cooling service in the water vapor compressor that executes the interstage cooling method for the water vapor compressor. For the convenience of description, the specific execution process of the interstage cooling method for the water vapor compressor device is introduced below by taking the execution subject being a processor in the water vapor compressor as an example.

[0094] The water vapor compressor equipment 2000 includes a multi-stage compression section 2100, a cooling pipe 2200, a spray device 2300, and a gas-liquid separator 2400. The spray device 2300 includes a water pump 2310, a control valve 2320 and a nozzle 2300. A turbulent structure 2210 is arranged in the cooling pipe 2200. The inlet of the gas-liquid separator 2400 is connected to the cooling pipe. The liquid outlet of the gas-liquid separator 2400 is connected to the control valve 2320 through the water pump 2310. The gas outlet of the gas-liquid separator 2400 is connected to the next-stage compression section 2100 of the compression section 2100. Among them, the compression section 2100 is a water vapor compressor.

[0095] In the water vapor compressor device 2000, the superheated steam discharged from the compression part 2100 is first sent to the next stage compression part 2100 through the cooling pipe 2200, and the cooling water is spray-cooled on the superheated steam in the cooling pipe 2200 through the water pump 2310, the control valve 2320 and the nozzle 2330. The gas-liquid mixture after the spray cooling treatment enters the gas-liquid separator 2200, and the gas-liquid separator 2200 performs gas-liquid separation on the gas-liquid mixture. The obtained steam is transported to the next stage compression part 2100 through the gas outlet 2230 of the gas-liquid separator 2200, and the obtained sprayed unvaporized liquid enters the spray device 2300 through the liquid outlet of the gas-liquid separator 2200, and the superheated steam in the cooling pipe 2200 is spray-cooled again, thereby realizing the recovery of liquid and heat. Since the turbulent flow structure 2100 is provided in the cooling pipe 2200, it can promote the mixing and heat exchange between high-temperature steam and low-temperature spray water, so as to ensure that the cooling target is achieved. Exemplary, Figure 1 The dashed arrows in the figure can represent the flow direction of water vapor, the dash-dot line can represent the flow direction of the steam-water mixture, and the solid arrows can represent the flow direction of liquid water.

[0096] Interstage cooling methods for water vapor compressors include:

[0097] S202: Detecting the gas temperature and gas pressure of the cooling pipeline, and determining the gas superheat based on the gas temperature and gas pressure.

[0098] S204: Obtain a preset superheat range for water vapor, and adjust the liquid flow rate of the control valve based on the gas superheat and the preset superheat range.

[0099] The preset superheat interval of the water vapor in the cooling pipe 2200 is set based on the structure and component materials of the water vapor compressor. When the superheat of the steam is in the preset superheat interval, it can effectively avoid the damage of the components in the water vapor compressor by the high-temperature steam; when the superheat of the steam is greater than the maximum value of the preset superheat interval, it may cause the high-temperature steam to damage the components in the water vapor compressor; when the superheat of the steam is less than the minimum value of the preset superheat interval, it indicates that the spray device 2300 is overcooled, which may affect the steam generation efficiency.

[0100] The preset superheat range can be [ΔTset-ε, ΔTset+ε], where ΔTset is the preset superheat, which can be 10°C or other values ​​set based on the structure and component materials of the steam compressor, and ε represents the allowable control accuracy, such as ε can be 0.5°C, 1°C, 2°C, etc.

[0101] By comparing the gas superheat with the preset superheat interval, it is determined whether the superheat of the steam is in the preset superheat interval, and when the superheat of the steam is not in the preset superheat interval, the superheat of the steam is greater than the maximum value or minimum value of the preset superheat interval. Thus, the control valve 2320 is adjusted in a targeted manner to adjust the liquid flow corresponding to the spray water, and then adjust the cooling effect of the superheated steam discharged from the compression part 2100 in the cooling pipe 220, so as to achieve the spray of unvaporized liquid and the heat recovery in the spray of unvaporized liquid, while effectively cooling the superheated steam discharged from the compression part 3100.

[0102] Since a gas-liquid separator 2400 is provided between the compression section 2100 of the water vapor compressor device 2000 provided in the present application and the next-stage compression section 2100, the flow rate of the cooling water mist can be slightly excessive.

[0103] Specifically, when the cooling water mist passing through the spoiler structure 2210 is completely vaporized, the following formula is theoretically satisfied: maha+mbhb=hc(ma+mb); wherein the flow rate of the superheated steam discharged from the compression part 2100 is ma, the heat of the superheated steam discharged from the compression part 2100 is ha, the flow rate of the spray water is mb, the heat of the spray water is hb, the total flow rate of the spray water after the spray water and the superheated steam discharged from the compression part 2100 are mixed, the spray water is completely vaporized and the mixed steam is cooled to saturated or nearly saturated steam, is ma+mb, and the total heat of the spray water after the spray water and the superheated steam discharged from the compression part 2100 are mixed, the spray water is completely vaporized and the mixed steam is cooled to saturated or nearly saturated steam, is hc. The unit of flow rate can be kg / s, and the unit of heat can be KJ / kg. In the embodiment provided in the present application, since a gas-liquid separator 2400 is provided between the compression section 2100 of the water vapor compressor device 2000 and the next-stage compression section 2100, the spray water flow rate can be slightly excessive, that is, the actual spray water flow rate mactual in the embodiment of the present application should be controlled to be greater than mb, thereby enhancing the heat exchange effect and the cooling effect.

[0104] In the embodiment provided in the present application, a spray device 2300 is provided between the compression section 2100 of the water vapor compressor device 2000 and the next-stage compression section 2100, so as to realize spray cooling of the superheated steam discharged from the compression section 2100 and not yet entering the next-stage compression section 2100, and at the same time, a gas-liquid separator 2400 is used to separate the gas-liquid mixture between the stages after the spray cooling. Since the liquid outlet pipe of the gas-liquid separator 2400 is connected to the control valve 2320 through the water pump 2310, the liquid remaining after the spray cooling can be re-cooled. The stored liquid is sprayed and reused, and the superheated steam discharged from the compression part 2100 and not yet entering the next stage compression part 2100 is sprayed and cooled again, so that the heat taken away by the spray cooling is retained in the system of the water vapor compressor, which can effectively increase the evaporation ratio of the liquid in the water vapor compressor, and the temperature of the liquid retained after spray cooling will increase, further increasing the evaporation ratio of the liquid in the water vapor compressor, so that the outlet pipe of the gas-liquid separator 2400 can transport more steam to the next stage compression part 2100 of the compression part 2100. At the same time, please refer to Figure 5 By detecting the gas temperature and gas pressure of the outlet pipe, the superheat of the gas in the outlet pipe of the gas-liquid separator 2400 is determined, and the liquid flow of the control valve 2320 is adjusted by using the gas superheat and the preset superheat range, thereby adjusting the spray water flow, thereby achieving heat recovery of the sprayed unvaporized liquid and the sprayed unvaporized liquid, while effectively cooling the superheated steam discharged from the compression part 2100.

[0105] In other embodiments, when the sprayed unvaporized liquid and the heat of the sprayed unvaporized liquid are not recovered and external water supply is used for spray cooling, the theoretical thermodynamic process is as follows:

[0106] minhin+mwhw=mouthout+mshs; wherein, min is the steam flow rate discharged from the compression section 2100, hin is the steam heat discharged from the compression section 2100, mw is the water flow rate for spray cooling with external water supplement, hw is the water heat for spray cooling with external water supplement, mout is the steam flow rate of the next-stage compression section 2100 transported to the compression section 2100, hout is the steam flow rate of the next-stage compression section 2100 transported to the compression section 2100, ms is the liquid flow rate of the sprayed unvaporized liquid, and hs is the liquid heat of the sprayed unvaporized liquid.

[0107] In the embodiment provided in the present application, when both the sprayed unvaporized liquid and the heat of the sprayed unvaporized liquid are recovered, the theoretical thermodynamic process is as follows:

[0108] mout'hout'=min'hin'+ma'ha', where mout' is the steam flow rate of the next-stage compression section 2100 delivered to the compression section 2100, hout' is the steam flow rate of the next-stage compression section 2100 delivered to the compression section 2100, min' is the steam flow rate discharged from the compression section 2100, hin' is the heat of the steam discharged from the compression section 2100, ma' is the water flow rate of the external additional water for spray cooling, and ha' is the water heat of the external additional water for spray cooling. Since the high-temperature spray evaporation rate formed after the recovery of the sprayed unvaporized liquid is higher when the same cooling target is achieved in the embodiments provided in the present application, the outlet steam volume will be greater, that is, mout' is greater than mout.

[0109] In the embodiment provided in the present application, in S204, adjusting the liquid flow rate of the control valve based on the gas superheat and the preset superheat range includes:

[0110] The superheat control type is determined based on the gas superheat and the preset superheat range, and the liquid flow of the control valve is adjusted using the superheat control method corresponding to the superheat control type.

[0111] Among them, the superheat control types may include three types, corresponding to the gas superheat being within a preset superheat range, the gas superheat being greater than the maximum value of the preset superheat range, and the gas superheat being less than the minimum value of the preset superheat range.

[0112] When the superheat of the steam is in the preset superheat range, the damage of high-temperature steam to the parts in the water vapor compressor can be effectively avoided. At this time, the control valve 2320 does not need to be adjusted accordingly, that is, the current state is maintained; when the superheat of the steam is greater than the maximum value of the preset superheat range, the high-temperature steam may damage the parts in the water vapor compressor. At this time, the valve opening of the control valve 2320 can be increased to increase the liquid flow rate of the spray water; when the superheat of the steam is less than the minimum value of the preset superheat range, it indicates that the spray device 2300 is over-cooled, which may affect the steam generation efficiency. At this time, the valve opening of the control valve 2320 can be reduced or closed to reduce the liquid flow rate of the spray water.

[0113] In the embodiment provided in the present application, the corresponding superheat control type is determined by utilizing the gas superheat and the preset superheat range, so that the superheat control method corresponding to the superheat control type is used to accurately adjust the liquid flow of the control valve 2320, thereby effectively cooling the superheated steam discharged from the compression section 2100.

[0114] See also Figure 7 , Figure 7 A schematic diagram of a flow chart of regulating the liquid flow of the control valve 2320 provided in an embodiment of the present application. Figure 7 As shown, first, S302 determines the superheat control type based on the gas superheat and the preset superheat range. Then, the superheat control method corresponding to the superheat control type is used to adjust the liquid flow of the control valve 2320. Specifically, the superheat control method corresponding to the superheat control type is used to adjust the liquid flow of the control valve 2320, including:

[0115] S304: When the gas superheat is greater than the maximum value of the preset superheat range, the superheat control type is determined to be the first superheat control mode, and the control valve is adjusted based on the first superheat control mode to increase the liquid flow rate.

[0116] Among them, when the gas superheat is greater than the maximum value of the preset superheat range, the superheat control type is the first superheat control mode. The first superheat control mode is used to adjust the control valve 2320 to increase the valve opening corresponding to the control valve 2320, and then perform liquid flow increase processing, thereby increasing the liquid flow of the spray water, improving the spray cooling effect, and then reducing the gas superheat.

[0117] S306: When the gas superheat is less than the minimum value of the preset superheat range, the superheat control type is determined to be the second superheat control mode, and the control valve is adjusted based on the second superheat control mode to perform liquid flow reduction processing.

[0118] Among them, when the gas superheat is less than the minimum value of the preset superheat range, the superheat control type is the second superheat control mode. The second superheat control mode is used to adjust the control valve 2320 to reduce the valve opening corresponding to the control valve 2320, and then perform liquid flow reduction processing, thereby reducing the liquid flow of the spray water, weakening the spray cooling effect, and increasing the gas superheat.

[0119] S308: When the gas superheat is within a preset superheat range, determining that the superheat control type is a third superheat control mode, and stopping regulating the control valve based on the third superheat control mode.

[0120] Among them, when the gas superheat is in the preset superheat range, the superheat control type is the third superheat control mode, and the third superheat control mode is used to maintain the current state of the control valve 2320, so that the gas superheat is always within the preset superheat range.

[0121] In the embodiment provided in the present application, when the superheat of the steam is greater than the maximum value of the preset superheat interval, the high-temperature steam may damage the parts in the water vapor compressor. When the superheat of the steam is less than the minimum value of the preset superheat interval, it indicates that the spray device 2300 is overcooled, which may affect the steam generation efficiency. Therefore, the corresponding superheat control type is determined by using the gas superheat and the preset superheat interval, so that the control valve 2320 is accurately adjusted for liquid flow by using the superheat control method corresponding to the superheat control type, so that the superheat of the gas obtained by mixing the superheated steam discharged from the compression part 2100 and the spray can be within the preset superheat interval, thereby effectively cooling the superheated steam discharged from the compression part 2100.

[0122] See also Figure 8 , Figure 8 A schematic diagram of a process for adjusting the water level provided in an embodiment of the present application. Figure 8 As shown, the interstage cooling method of the water vapor compressor also includes:

[0123] S402: Detect the water level height of the gas-liquid separator.

[0124] Among them, the bottom of the gas-liquid separator 2400 is a water storage chamber, the top of the gas-liquid separator 2400 is an air chamber, the water storage chamber and the air chamber are connected to each other, the water storage chamber of the gas-liquid separator 2400 is connected to the liquid outlet pipe of the gas-liquid separator 2400, and the air chamber of the gas-liquid separator 2400 is connected to the air outlet pipe of the gas-liquid separator 2400.

[0125] A liquid level sensor may be installed in the water storage chamber of the gas-liquid separator 2400 , and the liquid level sensor is used to detect the height of the water level in the water storage chamber of the gas-liquid separator 2400 .

[0126] S404: Obtain a first preset liquid level height interval corresponding to the gas-liquid separator, determine a liquid level height control type based on the water storage liquid level and the first preset liquid level height interval, and perform water storage liquid level height adjustment processing based on the liquid level height control type.

[0127] Among them, the first preset liquid level height interval includes a first preset liquid level height upper limit value and a first preset liquid level height lower limit value, and the first preset liquid level height upper limit value can be determined based on the set safety time length of the gas-liquid separator 2400 supplying water to the spray device 2300 at a set flow rate without external water replenishment. Specifically, the liquid mass or volume of the gas-liquid separator 2400 can be determined based on the product of the safety time length and the set flow rate, thereby determining the first preset liquid level height upper limit value. At the same time, the first preset liquid level height lower limit value of the gas-liquid separator 2400 can be determined based on the minimum pressure value of the water pump 2310 to avoid cavitation.

[0128] When the water storage level is greater than the first preset liquid level upper limit value of the first preset liquid level height interval, it indicates that there is too much liquid in the gas-liquid separator 2400, and the water storage level adjustment can be stopped; when the water storage level is less than the first preset liquid level lower limit value of the first preset liquid level height interval, it indicates that there is too little liquid in the gas-liquid separator 2400, and the water storage level can be adjusted to increase the water storage level to the first preset liquid level upper limit value or slightly greater than the first preset liquid level upper limit value. When the water storage level is within the first preset liquid level interval, the water storage level adjustment can be stopped, or the water storage level can be adjusted to increase the water storage level continuously or intermittently. When the water storage level adjustment process is performed, the adjustment can be based on the water replenishment control valve.

[0129] In the embodiment provided in the present application, the liquid level height control type is determined based on the water storage level height and the first preset liquid level height interval, and the water storage level height is adjusted based on the liquid level height control type, so that the water level in the gas-liquid separator 2400 is in a reasonable range, avoiding cavitation of the water pump 2310 and ensuring that the time for the gas-liquid separator 2400 to supply water to the spray device 2300 at a set flow rate meets the set safety time.

[0130] See also Fig. 9 , Fig. 9 This is another schematic diagram of a process for adjusting the water level provided in an embodiment of the present application. Fig. 9 As shown, in S404, the liquid level height control type is determined based on the water storage level height and the first preset liquid level height interval, and the water storage level height adjustment process is performed based on the liquid level height control type, including:

[0131] S502: Compare the water level with the first preset liquid level interval.

[0132] Among them, after comparing the water storage level height and the first preset liquid level height interval, three situations can be obtained, namely, the water storage level height is greater than the first preset liquid level height upper limit value of the first preset liquid level height interval, the water storage level height is less than the first preset liquid level height lower limit value of the first preset liquid level height interval, and the water storage level height is within the first preset liquid level height interval.

[0133] S504: When the water storage level is less than the minimum value of the first preset level range, the level control type is determined to be the first level control mode, and water storage and water supply processing is performed based on the first level control mode to increase the water storage level.

[0134] Among them, if the water storage level height is less than the minimum value of the first preset liquid level height interval, it indicates that there is too little liquid in the gas-liquid separator 2400, and the liquid level height control type is the first liquid level height control method. The water storage level height can be adjusted based on the first liquid level height control method to increase the water storage level height to the first preset liquid level height upper limit value or slightly larger than the first preset liquid level height upper limit value.

[0135] S506: When the water storage level is greater than or equal to the maximum value of the first preset liquid level range, the liquid level control type is determined to be the second liquid level control mode, and the water storage and supply process is terminated based on the second liquid level control mode.

[0136] Among them, the water storage level height is greater than or equal to the maximum value of the first preset liquid level height interval, indicating that there is too much liquid in the gas-liquid separator 2400, and the adjustment of the water storage level height can be stopped. At this time, the water storage and supply processing can be ended based on the second liquid level height control method.

[0137] In addition, when the water storage level is within the first preset level interval, the water storage level may be stopped from being adjusted, or the water storage level may be adjusted to increase the water storage level continuously or intermittently.

[0138] In the embodiment provided in the present application, a liquid level comparison process is performed between the water storage level and the first preset liquid level height interval to determine the corresponding liquid level height control type, so that the water level in the gas-liquid separator 2400 is within a reasonable range, thereby avoiding cavitation of the water pump 2310 and ensuring that the time for the gas-liquid separator 2400 to supply water to the spray device 2300 at a set flow rate meets the set safety time.

[0139] like Fig.11As shown (the compression part 2100 and the next stage compression part 2100 are not shown), the water vapor compressor also includes a water tank 2600, the water inlet of the water tank 2600 is connected to the liquid outlet pipe of the gas-liquid separator 2400, and the water outlet of the water tank 2600 is connected to the water pump 2310. A steam trap 2700 is also arranged between the pipes connecting the water tank 2600 and the gas-liquid separator 2400, and a second liquid level sensor 2630 is arranged on the water tank 2600. The number of the second liquid level sensors 2630 is two, and they are arranged at intervals in the height direction. The two second liquid level sensors 2630 are both connected to the control valve 2320 signal. Specifically, the two second liquid level sensors 2630 can be set at the highest value and the lowest value of the preset value of the liquid level height. When the liquid level is higher than the second liquid level sensor 2630 at the top, it means that the liquid level is higher than the preset highest value. When the liquid level is higher than the second liquid level sensor 2630 at the bottom, it means that the liquid level is higher than the preset lowest value. Thus, the second liquid level sensor 2630 can detect the liquid level height of the water tank 2600. Specifically, the method for adjusting the liquid level height of the water tank 2600 includes:

[0140] S702: Detect the liquid level of the water tank.

[0141] The liquid level height in the water tank 2600 is detected based on the second liquid level sensor 2630 , so as to obtain the liquid level height of the water tank 2600 .

[0142] S704: Obtain a second preset liquid level height interval corresponding to the water tank, determine a water tank liquid level height control type based on the water tank liquid level and the second preset liquid level height interval, and perform water tank liquid level height adjustment processing based on the water tank liquid level height control type.

[0143] Among them, the second preset liquid level height interval corresponding to the water tank 2600 includes a second preset liquid level height upper limit value and a second preset liquid level height lower limit value, and the second preset liquid level height upper limit value can be determined based on the set safety time length of the water tank 2600 supplying water to the spray device 2300 at a set flow rate without external water replenishment. Specifically, the liquid mass or volume of the water tank 2600 can be determined based on the product of the safety time length and the set flow rate, thereby determining the second preset liquid level height upper limit value. At the same time, the second preset liquid level height lower limit value of the water tank 2600 can be determined based on the minimum pressure value of the water pump 2310 to avoid cavitation.

[0144] Afterwards, the second preset liquid level height interval corresponding to the water tank 2600 is compared with the liquid level height of the water tank 2600 to determine the liquid level height control type of the water tank 2600. Finally, the liquid level height of the water tank 2600 is adjusted based on the liquid level height control type of the water tank 2600 so that the liquid level height of the water tank 2600 falls within a suitable interval.

[0145] In the embodiment provided in the present application, the liquid level height control type of the water tank 2600 is determined based on the liquid level height of the water tank 2600 and the second preset liquid level height interval, and the liquid level height of the water tank 2600 is adjusted based on the liquid level height control type of the water tank 2600, so that the water level in the water tank 2600 is within a reasonable range, avoiding cavitation of the water pump 2310 and ensuring that the time for the water tank 2600 to supply water to the spray device 2300 at a set flow rate meets the set safety time.

[0146] See also Fig.12 In S704, the water tank liquid level height control type is determined based on the water tank liquid level height and the second preset liquid level height interval, and the water tank liquid level height adjustment process is performed based on the water tank liquid level height control type, including:

[0147] S802: Compare the water tank liquid level with the second preset liquid level interval.

[0148] Among them, after comparing the liquid level height of water tank 2600 and the second preset liquid level height interval, three situations can be obtained, namely, the liquid level height of water tank 2600 is greater than the second preset liquid level height upper limit value of the second preset liquid level height interval, the liquid level height of water tank 2600 is less than the second preset liquid level height lower limit value of the second preset liquid level height interval, and the liquid level height of water tank 2600 is within the second preset liquid level height interval.

[0149] S804: When the water tank liquid level is less than the minimum value of the second preset liquid level range, determine that the water tank liquid level control type is the first water tank liquid level control method, and perform water tank water supply processing based on the first water tank liquid level control method to increase the water tank liquid level.

[0150] Among them, the liquid level height of water tank 2600 is less than the minimum value of the second preset liquid level height interval, indicating that there is too little liquid in water tank 2600, then the liquid level height control type of water tank 2600 is the first water tank 2600 liquid level height control method, and the water supply processing of water tank 2600 can be performed based on the first water tank 2600 liquid level height control method, and the liquid level height of water tank 2600 can be adjusted to increase the liquid level height of water tank 2600 to the second preset liquid level height upper limit value or slightly larger than the second preset liquid level height upper limit value.

[0151] S806: When the water tank liquid level is greater than or equal to the maximum value of the second preset liquid level interval, determine that the water tank liquid level control type is the second water tank liquid level control method, and end the water tank water supply process based on the second water tank liquid level control method.

[0152] Among them, the liquid level height of water tank 2600 is greater than or equal to the maximum value of the second preset liquid level height interval, indicating that there is too much liquid in water tank 2600, and the adjustment of the liquid level height of water tank 2600 can be stopped. At this time, the water supply processing of water tank 2600 can be ended based on the second water tank 2600 liquid level height control method.

[0153] In addition, when the liquid level of the water tank 2600 is within the second preset liquid level interval, the liquid level of the water tank 2600 may be stopped from being adjusted, or the liquid level of the water tank 2600 may be adjusted to continuously or intermittently increase the liquid level of the water tank 2600.

[0154] In the embodiment provided in the present application, the liquid level height of the water tank 2600 is compared with the second preset liquid level height interval to determine the corresponding liquid level height control type of the water tank 2600, so that the water level in the water tank 2600 is within a reasonable range, avoiding cavitation of the water pump 2310 and ensuring that the time for the water tank 2600 to supply water to the spray device 2300 at a set flow rate meets the set safety time.

[0155] See also Fig.13 , the method comprising:

[0156] S902: Perform a liquid quality test on the liquid outlet pipeline of the gas-liquid separator to obtain the liquid outlet spray water quality parameters.

[0157] Among them, the water quality of the liquid discharged from the liquid outlet pipe of the gas-liquid separator 2400 may not meet the water quality requirements for recycling. Therefore, the liquid outlet pipe of the gas-liquid separator 2400 is subjected to a liquid outlet quality test to obtain the liquid outlet spray water quality parameters, thereby determining whether the liquid outlet spray water quality parameters meet the liquid outlet recovery conditions.

[0158] S904: If the outlet liquid spray water quality parameters meet the outlet liquid recovery conditions, the discharge liquid of the outlet liquid pipeline is used to perform a first water supply treatment on the water pump.

[0159] Among them, when the water quality parameters of the liquid spray meet the liquid recovery conditions, the discharged liquid from the liquid outlet pipe can be directly used to perform the first water supply treatment on the water pump 2310, so that the sprayed unvaporized liquid and the heat of the sprayed unvaporized liquid can be doubly recovered.

[0160] S906: If the outlet spray water quality parameters do not meet the outlet liquid recovery conditions, the liquid discharged from the outlet pipe is treated with liquid heat energy recovery using supplementary liquid to obtain spray supplementary liquid, and the water pump 2310 is subjected to a second water supply treatment using the spray supplementary liquid.

[0161] Among them, when the water quality parameters of the liquid spray do not meet the liquid recovery conditions, the liquid discharged from the liquid outlet pipe is treated with liquid heat energy recovery liquid to obtain spray supplementary liquid, so that the heat of the sprayed unvaporized liquid can be recovered, and then the spray supplementary liquid is used to perform a second water supply treatment on the water pump 2310.

[0162] In the embodiment provided in the present application, by judging whether the outlet spray water quality parameters meet the outlet liquid recovery conditions, and then judging whether to perform dual recovery of the sprayed unvaporized liquid and the heat of the sprayed unvaporized liquid, when the outlet spray water quality parameters meet the outlet liquid recovery conditions, the discharge liquid of the outlet pipe can be directly used to perform the first water supply treatment on the water pump 2310, so that the sprayed unvaporized liquid and the heat of the sprayed unvaporized liquid can be dually recovered; when the outlet spray water quality parameters do not meet the outlet liquid recovery conditions, the discharge liquid of the outlet pipe is treated with liquid heat energy recovery liquid to obtain sprayed supplementary liquid, so that the heat of the sprayed unvaporized liquid can be recovered, and then the sprayed supplementary liquid is used to perform the second water supply treatment on the water pump 2310.

[0163] See also Fig.14 The spray device 2300 further includes a water replenishment component 2510 and a heat recovery component 2520. The first liquid inlet of the heat recovery component 2520 is connected to the liquid outlet pipeline, the second liquid inlet of the heat recovery component 2520 is connected to the water replenishment component 2510, and the liquid outlet of the heat recovery component 2520 is connected to the water pump 2310 ( Fig.13 The water pump 2310 is not shown); see Fig.10 The liquid outlet pipe is also provided with a steam trap 2700 and a circulating pump for drainage. The water replenishment component 2510 may include a spray water replenishment pump 2310, and the heat recovery component 2520 may include a heat exchanger for drainage recovery.

[0164] In S906, liquid heat recovery treatment is performed on the discharged liquid of the liquid outlet pipe by using supplementary liquid to obtain spray supplementary liquid, and the spray supplementary liquid is used to perform a second water supply treatment on the water pump, including:

[0165] The discharged liquid from the liquid outlet pipe is transported to the first liquid inlet, and the supplementary liquid is transported to the second liquid inlet through the water replenishment component 2510. The discharged liquid and the supplementary liquid are subjected to liquid heat energy exchange treatment in the heat energy recovery component 2520 to obtain waste liquid and spray supplementary liquid, and the spray supplementary liquid is driven to be transported to the water pump 2310 through the liquid outlet.

[0166] The liquid outlet is connected to the water replenishment component 2510 to the second liquid inlet, and the discharged liquid from the liquid outlet pipe is transported to the first liquid inlet through Figure 1 The water pump 2310, the control valve 2320 and the cooling pipe 2200 in the liquid outlet pipe can be transported to the first liquid inlet and then recycled after water treatment by the liquid recovery module (deaerator, soft water tank 2600, etc.). The circuit after the liquid is transported to the first liquid inlet can be determined based on whether the liquid spray water quality parameters meet the liquid recovery conditions. When the liquid spray water quality parameters meet the liquid recovery conditions, the liquid discharged from the liquid outlet pipe can be transported to the first liquid inlet and then recycled. Figure 1 The water pump 2310 and the control valve 2320 are connected to the cooling pipe 2200; when the water quality parameters of the liquid spray do not meet the liquid recovery conditions, the discharged liquid from the liquid outlet pipe is transported to the first liquid inlet and can be recycled after water treatment by the liquid recovery module (deaerator, soft water tank 2600, etc.).

[0167] In this embodiment, since the water quality parameters of the liquid spray do not meet the liquid recovery conditions, the spray replenishing liquid is used to perform the second water supply treatment on the water pump 2310. Therefore, the discharged liquid of the liquid outlet pipe is transported to the first liquid inlet and then recycled after water treatment by the liquid recovery module. The discharged liquid is subjected to liquid heat exchange treatment to obtain waste liquid, and the replenishing liquid is subjected to liquid heat exchange treatment to obtain spray replenishing liquid.

[0168] In the embodiments provided in the present application, liquid heat energy is recovered from the liquid discharged from the liquid outlet pipe by supplementary liquid to obtain spray supplementary liquid, so that the heat of the sprayed unvaporized liquid can be recovered.

[0169] See also Fig.15 , Fig.15 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. Fig.15 As shown, the electronic device 1100 may include: at least one processor 1101 , at least one network interface 1104 , a user interface 1103 , a memory 1105 , and at least one communication bus 1102 .

[0170] The communication bus 1102 is used to realize the connection and communication between these components.

[0171] The user interface 1103 may include a display screen (Display) and a camera (Camera), and the optional user interface 1103 may also include a standard wired interface and a wireless interface.

[0172] The network interface 1104 may optionally include a standard wired interface or a wireless interface (such as a WI-FI interface).

[0173] Among them, the processor 1101 may include one or more processing cores. The processor 1101 uses various interfaces and lines to connect various parts within the entire electronic device 1100, and executes various functions and processes data of the electronic device 1100 by running or executing instructions, programs, code sets or instruction sets stored in the memory 1105, and calling data stored in the memory 1105. Optionally, the processor 1101 can be implemented in at least one hardware form of digital signal processing (Digital Signal Processing, DSP), field programmable gate array (Field-Programmable Gate Array, FPGA), and programmable logic array (Programmable Logic Array, PLA). The processor 1101 can integrate one or a combination of a central processing unit (Central Processing Unit, CPU), a graphics processing unit (Graphics Processing Unit, GPU) and a modem. Among them, the CPU mainly processes the operating system, user interface and application programs; the GPU is responsible for rendering and drawing the content to be displayed on the display screen; the modem is used to process wireless communications. It can be understood that the above-mentioned modem may not be integrated into the processor 1101, and it can be implemented separately through a chip.

[0174] Among them, the memory 1105 may include a random access memory (Random Access Memory, RAM) and may also include a read-only memory (Read-Only Memory, ROM). Optionally, the memory 1105 includes a non-transitory computer-readable storage medium. The memory 1105 can be used to store instructions, programs, codes, code sets or instruction sets. The memory 1105 may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playback function, an image playback function, etc.), instructions for implementing the above-mentioned various method embodiments, etc.; the data storage area may store data involved in the above-mentioned various method embodiments, etc. The memory 1105 may also be optionally at least one storage device located away from the aforementioned processor 1101. As Fig.15As shown, the memory 1105 as a computer storage medium may include an operating system, a network communication module, a user interface module, and an interstage cooling program of a water vapor compressor. The water vapor compressor includes a multi-stage compression part, a cooling pipeline, a spray device, and a gas-liquid separator. The spray device includes a water pump, a control valve, and a nozzle. The cooling pipeline is connected to the adjacent two-stage compression parts. The inlet of the gas-liquid separator is connected to the cooling pipeline. The liquid outlet pipeline of the gas-liquid separator is connected to the spray device. The gas outlet pipeline of the gas-liquid separator is connected to the next stage compression part.

[0175] exist Fig.15 In the electronic device 1100 shown, the user interface 1103 is mainly used to provide an input interface for the user and obtain the data input by the user; and the processor 1101 can be used to call the interstage cooling program of the water vapor compressor stored in the memory 1105, and specifically perform the following operations:

[0176] Detecting the gas temperature and gas pressure of the cooling pipeline, and determining the gas superheat based on the gas temperature and gas pressure;

[0177] A preset superheat range for water vapor is obtained, and the liquid flow rate of the control valve is adjusted based on the gas superheat and the preset superheat range.

[0178] Optionally, when the processor performs liquid flow regulation on the control valve based on the gas superheat and the preset superheat interval, the processor specifically performs:

[0179] The superheat control type is determined based on the gas superheat and the preset superheat range, and the liquid flow of the control valve is adjusted using the superheat control method corresponding to the superheat control type.

[0180] Optionally, when the processor executes the liquid flow regulation of the control valve by using the superheat control method corresponding to the superheat control type, the processor specifically executes:

[0181] When the gas superheat is greater than the maximum value of the preset superheat range, the superheat control type is determined to be the first superheat control mode, and the control valve is adjusted based on the first superheat control mode to increase the liquid flow rate;

[0182] When the gas superheat is less than the minimum value of the preset superheat range, the superheat control type is determined to be the second superheat control mode, and the control valve is adjusted based on the second superheat control mode to perform liquid flow reduction processing;

[0183] When the gas superheat is within a preset superheat range, the superheat control type is determined to be a third superheat control mode, and the control valve is stopped from being adjusted based on the third superheat control mode.

[0184] Optionally, the processor is further adapted to execute:

[0185] Detect the water level height of the gas-liquid separator;

[0186] A first preset liquid level height interval corresponding to the gas-liquid separator is obtained, a liquid level height control type is determined based on the water storage liquid level height and the first preset liquid level height interval, and a water storage liquid level height adjustment process is performed based on the liquid level height control type.

[0187] Optionally, the processor determines the liquid level control type based on the water storage level and the first preset liquid level interval, and performs the water storage level adjustment process based on the liquid level control type, specifically performing:

[0188] Performing a liquid level comparison process on the water storage liquid level and the first preset liquid level height interval;

[0189] When the water storage level is less than the minimum value of the first preset liquid level range, the liquid level control type is determined to be the first liquid level control mode, and water storage and water supply processing is performed based on the first liquid level control mode to increase the water storage level;

[0190] When the water storage level is greater than or equal to the maximum value of the first preset liquid level range, the liquid level control type is determined to be the second liquid level control mode, and the water storage and supply process is terminated based on the second liquid level control mode.

[0191] Optionally, the water vapor compressor device 2000 further includes a water tank, the water inlet of the water tank is connected to the liquid outlet pipe of the gas-liquid separator, and the water outlet of the water tank is connected to the water pump.

[0192] The processor is further adapted to perform:

[0193] Detect the water tank liquid level height of the water tank;

[0194] Obtain a second preset liquid level height interval corresponding to the water tank, determine a water tank liquid level height control type based on the water tank liquid level and the second preset liquid level height interval, and perform water tank liquid level height adjustment processing based on the water tank liquid level height control type.

[0195] Optionally, the processor determines the water tank liquid level height control type based on the water tank liquid level height and the second preset liquid level height interval, and performs water tank liquid level height adjustment processing based on the water tank liquid level height control type, specifically performing:

[0196] Performing a comparison process on the water tank liquid level height and the second preset liquid level height interval;

[0197] When the water tank liquid level is less than the minimum value of the second preset liquid level interval, determining that the water tank liquid level control type is the first water tank liquid level control mode, and performing water supply processing on the water tank based on the first water tank liquid level control mode to increase the water tank liquid level;

[0198] When the water tank liquid level is greater than or equal to the maximum value of the second preset liquid level interval, the water tank liquid level control type is determined to be the second water tank liquid level control method, and the water tank water supply process is terminated based on the second water tank liquid level control method.

[0199] Optionally, the processor is further adapted to execute:

[0200] Conducting a liquid quality test on the liquid outlet pipeline of the gas-liquid separator to obtain the liquid outlet spray water quality parameters;

[0201] If the water quality parameters of the outlet spray meet the outlet recovery conditions, the discharge liquid from the outlet pipe is used to perform the first water supply treatment on the water pump;

[0202] If the outlet spray water quality parameters do not meet the outlet liquid recovery conditions, the liquid discharged from the outlet pipe is treated with liquid heat energy recovery using supplementary liquid to obtain spray supplementary liquid, and the spray supplementary liquid is used to perform a second water supply treatment on the water pump.

[0203] Optionally, the spray device further includes a water replenishment component and a heat recovery component, the first liquid inlet of the heat recovery component is connected to the liquid outlet pipe, the second liquid inlet of the heat recovery component is connected to the water replenishment component, and the liquid outlet of the heat recovery component is connected to the water pump;

[0204] When the processor executes liquid heat recovery processing of the discharged liquid from the liquid outlet pipe using the supplementary liquid to obtain the spray supplementary liquid, and uses the spray supplementary liquid to perform the second water supply processing on the water pump, the specific execution is:

[0205] The discharged liquid from the liquid outlet pipe is transported to the first liquid inlet, and the supplementary liquid is transported to the second liquid inlet through the water replenishment component. The discharged liquid and the supplementary liquid are subjected to liquid heat energy exchange treatment in the heat energy recovery component to obtain waste liquid and spray supplementary liquid, and the spray supplementary liquid is driven to be transported to the water pump through the liquid outlet.

[0206] In the several embodiments provided in the embodiments of the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the modules is only a logical function division. There may be other division methods in actual implementation, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or modules, which can be electrical, mechanical or other forms.

[0207] The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed on multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0208] In addition, each functional module in each embodiment of the present application can be integrated into a processing module, or each module can exist physically separately, or two or more modules can be integrated into one module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules.

[0209] If the integrated module is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program code.

[0210] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0211] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cooling system, characterized in that: include: A spraying device, comprising a water pump and a nozzle; the nozzle is connected to the cooling pipe to spray cooling water mist into the cooling pipe under the pumping of the water pump; and A cooling pipeline is provided with a turbulent structure, and the turbulent structure is used to drive the cooling water mist and the steam discharged into the cooling pipeline from the upstream compression part to mix.

2. The cooling system according to claim 1, characterized in that The spoiler structure comprises a first spoiler and a second spoiler provided in the cooling pipe, wherein the first spoiler and the second spoiler are arranged in sequence in the extending direction of the cooling pipe; A plurality of first flow guide channels arranged at intervals are formed in the first flow spoiler, and a plurality of second flow guide channels arranged at intervals are formed in the second flow spoiler; The first flow guiding channel and the second flow guiding channel are both flat, and a thickness direction of the first flow guiding channel and a thickness direction of the second flow guiding channel form an angle.

3. The cooling system according to claim 2, characterized in that The thickness direction of the first guide channel is perpendicular to the thickness direction of the second guide channel.

4. The cooling system according to claim 2, characterized in that: The thickness of the first flow guiding channel is greater than or equal to the thickness of the second flow guiding channel.

5. The cooling system according to claim 2, characterized in that: The thickness of the first flow guiding channel decreases along the extending direction of the cooling pipe; and / or The thickness of the second flow guiding channel increases along the extending direction of the cooling pipe.

6. The cooling system according to claim 2, characterized in that: There is a gap between the first spoiler and the second spoiler along the extending direction of the cooling pipe.

7. The cooling system according to claim 2, characterized in that: There is no interval between the first spoiler and the second spoiler along the extending direction of the cooling pipe.

8. The cooling system according to any one of claims 2 to 7, characterized in that: The first spoiler portion includes a plurality of first spoilers arranged at intervals, and the first guide channel is formed between two adjacent first spoilers. The second spoiler portion includes a plurality of second spoilers arranged at intervals, and the first guide channel is formed between two adjacent second spoilers.

9. The cooling system according to claim 8, characterized in that At least one of the first spoiler and the second spoiler is a corrugated plate; Alternatively, both the first spoiler and the second spoiler are corrugated plates, and the first spoiler and the second spoiler have different shapes; Alternatively, a first protruding structure is further provided on the first spoiler and / or the second spoiler.

10. The cooling system according to claim 1, characterized in that The cooling pipeline includes a mixing pipe section, the mixing pipe section is a venturi tube structure, the flow disturbance structure is arranged inside the venturi tube cavity, and the nozzle is connected to the throat position of the venturi tube.

11. The cooling system according to claim 1, characterized in that The spoiler structure includes a plurality of second protrusion structures, which protrude from the inner wall surface of the cooling pipe and are arranged at intervals along the extension direction of the cooling pipe.

12. A water vapor compressor device, characterized in that: include: at least two compression sections; as well as A cooling system as claimed in any one of claims 1 to 11; The cooling pipeline connects the compression parts of two adjacent stages, and the nozzle is connected to the cooling pipeline to spray cooling water mist into the cooling pipeline under the pumping of the water pump; Wherein, a turbulent structure is arranged on the cooling pipe, and the turbulent structure is used to drive the cooling water mist and the steam discharged into the cooling pipe from the upstream compression part to perform mixed heat exchange.

13. The water vapor compressor device according to claim 12, characterized in that: The spray device further comprises a control valve, the control valve being connected between the water pump and the nozzle and being configured to adjust the spray flow rate of the nozzle; The water vapor compressor device also includes: a detection assembly configured to detect the superheat of gas between the spray device and the next-stage compression section of the compression section; The controller is respectively connected to the detection component and the control valve signal, and is configured to adjust the spray flow of the nozzle based on the gas superheat and the preset superheat until the gas superheat is equal to the preheating superheat.

14. The water vapor compressor device according to claim 12, characterized in that: It also includes a gas-liquid separator, the inlet of which is connected to the cooling pipe and is located downstream of the flow-disturbing structure, the liquid outlet of which is connected to the spray device, and the gas outlet is connected to the next-level compression part of the compression part.

15. The water vapor compressor device according to claim 14, characterized in that: It also includes two first liquid level sensors, which are installed on the gas-liquid separator and spaced apart in the height direction, and are both connected to the control valve signal; The controller is configured to: obtain the water level height in the gas-liquid separator through the first liquid level sensor, and if the water level height and a preset value meet a set condition, control the control valve to adjust the spray flow of the nozzle.

16. The water vapor compressor device according to claim 14, characterized in that: The spray device also includes a water replenishment component and a heat recovery component. The first liquid inlet of the heat recovery component is connected to the liquid outlet of the gas-liquid separator, the second liquid inlet of the heat recovery component is connected to the water replenishment component, and the liquid outlet of the heat recovery component is connected to the water pump.

17. The water vapor compressor device according to claim 14, characterized in that: It also includes a water tank and two second liquid level sensors, wherein the water inlet of the water tank is connected to the liquid outlet pipe of the gas-liquid separator, and the water outlet of the water tank is connected to the water pump. The two second liquid level sensors are arranged in the water tank and spaced apart in the height direction, and the two second liquid level sensors are used to detect the liquid level in the water tank.

18. An interstage cooling method for a water vapor compressor device, characterized in that: The water vapor compressor equipment comprises a multi-stage compression part, a cooling system and a gas-liquid separator, the cooling system comprises a cooling pipe and a spraying device, the cooling pipe connects two adjacent stages of the compression parts, the spraying device comprises a water pump, a control valve and a nozzle, the nozzle is connected to the cooling pipe to spray cooling water mist into the cooling pipe under the pumping of the water pump, a turbulent structure is provided on the cooling pipe, the turbulent structure is used to drive the cooling water mist and the steam discharged into the cooling pipe from the upstream compression part to mix and exchange heat, the inlet of the gas-liquid separator is connected to the cooling pipe, the liquid outlet pipe of the gas-liquid separator is connected to the control valve through the water pump, and the gas outlet pipe of the gas-liquid separator is connected to the next stage of the compression part of the compression part; The method comprises: detecting a gas temperature and a gas pressure of the cooling pipeline, and determining a gas superheat based on the gas temperature and the gas pressure; A preset superheat interval for the cooling pipeline is obtained, and the liquid flow of the control valve is adjusted based on the gas superheat and the preset superheat interval.

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