A vapor-liquid separation steam exhaust device for recovering an evaporative cooling medium

Abstract

The present application relates to the technical field of evaporative cooling, and particularly relates to a vapor-liquid separation steam exhaust device for recycling evaporative cooling medium, which aims to solve the problem of vapor-state evaporative cooling medium exhaust during steam exhaust of an evaporative cooling system. The present application comprises a valve body and a valve rod; the valve body is provided with cooling fins and is provided with a primary steam exhaust port, a secondary steam exhaust port and a liquid return port; the valve rod is moved upward to open the secondary steam exhaust port and close the liquid return port, mixed steam enters the valve body, the cooling fins condense the evaporative cooling medium into liquid state, and non-condensed steam is exhausted from the secondary steam exhaust port; the valve rod is moved downward to close the secondary steam exhaust port and open the liquid return port, and the liquid-state evaporative cooling medium is returned to the evaporative cooling system through the liquid return port and the primary steam exhaust port. The present application cools the mixed steam by the cooling fins to condense the vapor-state evaporative cooling medium into liquid state, and the liquid-state evaporative cooling medium is returned to the evaporative cooling system under the action of gravity to avoid loss of the evaporative cooling medium, and the non-condensed steam is exhausted under the pressure difference between the inside and outside of the valve body.

Description

Technical Field

[0001] This invention relates to the field of evaporative cooling technology, and more particularly to a vapor-liquid separation and exhaust device for recovering evaporative cooling media. Background Technology

[0002] With the miniaturization of various power devices, especially the increasingly compact designs of servers and computers in the IT industry and their ever-increasing computing power, the heat flux density of heat-generating components is also constantly increasing. Heat dissipation bottlenecks are becoming a major obstacle to technological progress. To address this issue, evaporative cooling technology has been developed in recent years, building upon traditional cooling methods such as air cooling and water cooling. This technology boasts advantages such as extremely low energy consumption, quiet operation, and high reliability, making it particularly suitable for large electronic devices with high heat flux densities. This technology has been developed into various implementation forms, including immersion, wall-mounted, and spray-type applications.

[0003] However, the heat exchange efficiency of water-cooled condensers in evaporative cooling systems often drops significantly due to the mixing of non-condensable gases. This phenomenon can be solved by venting steam, but traditional venting methods discharge non-condensable gases and vaporized evaporative cooling media together, resulting in media waste. Summary of the Invention

[0004] The purpose of this invention is to provide a vapor-liquid separation and exhaust device for recovering evaporative cooling medium, so as to solve the problem of the discharge of gaseous evaporative cooling medium during the exhaust of the evaporative cooling system.

[0005] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows:

[0006] A vapor-liquid separation and exhaust device for recovering evaporative cooling medium includes a valve body and a valve stem;

[0007] The valve body is provided with cooling fins and has a primary exhaust port, a secondary exhaust port and a liquid return port. The primary exhaust port is located below the secondary exhaust port. The liquid return port is connected to the primary exhaust port. The primary exhaust port is connected to the evaporative cooling system.

[0008] The valve stem is inserted into the primary exhaust port and the secondary exhaust port at both ends and can reciprocate in the vertical direction.

[0009] The valve stem moves upward to open the secondary exhaust port and close the liquid return port, the mixed gas enters the valve body, the cooling fins condense the evaporative cooling medium in the mixed gas into liquid, and the non-condensable gas in the mixed gas is discharged from the secondary exhaust port.

[0010] The valve stem moves downward to close the secondary exhaust port and open the liquid return port, and the liquid evaporation cooling medium flows back to the evaporation cooling system through the liquid return port and the primary exhaust port in sequence.

[0011] Furthermore, the valve stem includes a reciprocating shaft and a gasket, the reciprocating shaft including a first slide rod, a shaft body, and a second slide rod connected in sequence;

[0012] The first slide bar is inserted into the primary exhaust port, and the second slide bar is inserted into the secondary exhaust port;

[0013] The gasket is connected to the first slide bar and moves with the first slide bar to open and close the return port.

[0014] Furthermore, the first slide bar is configured as a U-shaped structure with its opening facing away from the shaft body, and the gaskets are provided on both sides of the U-shaped structure.

[0015] Furthermore, the valve stem also includes a limiting spring, which is installed in the opening of the first slide bar to apply a thrust to both sides of the U-shaped structure so that the gasket abuts against the inner wall of the valve body.

[0016] Furthermore, the gasket is made of an elastic material.

[0017] Furthermore, the valve stem also includes a sealing gasket, and the reciprocating shaft also includes a pressure cap;

[0018] The end of the second slide rod away from the shaft body extends through the secondary vent and connects to the pressure cap. The sealing gasket is fitted onto the second slide rod and positioned between the pressure cap and the valve body, and is connected to the pressure cap.

[0019] Furthermore, the valve stem also includes a return spring, one end of which is connected to the valve body and the other end of which is connected to the shaft body, for applying a thrust to the shaft body to move the shaft body toward the primary exhaust port.

[0020] Furthermore, the valve stem includes a guide plate, which is horizontally disposed below the cooling fins.

[0021] Furthermore, the vapor-liquid separation and exhaust device for recovering the evaporative cooling medium also includes a drive mechanism, which includes a drive gear, a transmission gear set, a drive gear set, a rack, and a spring.

[0022] The transmission gear set includes a first gear and a second gear mounted coaxially, and the drive gear set includes a third gear and a fourth gear mounted coaxially.

[0023] One end of the spring is connected to the drive gear, and the other end is connected to the valve body; the rack is vertically arranged and installed on the valve stem;

[0024] The driving gear meshes with the first gear, the second gear meshes with the third gear, and the fourth gear meshes with the rack and is configured as a sector gear;

[0025] The number of teeth of the driving gear is greater than that of the first gear, the number of teeth of the second gear is greater than that of the first gear, and the number of teeth of the third gear is less than that of the second gear.

[0026] Furthermore, the drive mechanism also includes a handle and a scale ring;

[0027] The handle is connected to the drive gear, and the scale ring is mounted on the valve body and coaxially arranged with the drive gear to indicate the position of the handle.

[0028] In summary, the technical effects achieved by this invention are as follows:

[0029] The vapor-liquid separation and exhaust device for recovering evaporative cooling medium provided by the present invention includes a valve body and a valve stem. The valve body is provided with cooling fins and has a primary exhaust port, a secondary exhaust port, and a liquid return port. The primary exhaust port is located below the secondary exhaust port, and the liquid return port is connected to the primary exhaust port. The primary exhaust port is connected to the evaporative cooling system. The two ends of the valve stem are respectively inserted into the primary exhaust port and the secondary exhaust port and can reciprocate in the vertical direction. The valve stem moves upward to open the secondary exhaust port and close the liquid return port. The mixed gas enters the valve body, and the cooling fins condense the evaporative cooling medium in the mixed gas into a liquid state. The non-condensable gas in the mixed gas is discharged from the secondary exhaust port. The valve stem moves downward to close the secondary exhaust port and open the liquid return port. The liquid evaporative cooling medium flows back to the evaporative cooling system in sequence through the liquid return port and the primary exhaust port.

[0030] The vapor-liquid separation and exhaust device for recovering evaporative cooling medium provided by the present invention cools the mixed gas composed of evaporative cooling medium and non-condensable gas through cooling fins, so that the gaseous evaporative cooling medium condenses into liquid and flows back into the evaporative cooling system under the action of gravity to avoid the loss of evaporative cooling medium. At the same time, the non-condensable gas is discharged under the pressure difference between the inside and outside of the valve body.

[0031] When the valve stem closes the secondary vent and opens the liquid return port, the pressure inside the valve body is the same as the pressure of the evaporative cooling system, allowing the liquid evaporative cooling medium to flow smoothly back to the evaporative cooling system. The reciprocating motion of the valve stem, which intermittently opens the secondary vent, allows sufficient non-condensable gas to accumulate above the condenser of the evaporative cooling system, and provides time for non-condensable gas, which is horizontally farther from the primary vent, to converge towards the primary vent. In other words, the intermittent venting method allows time for the non-condensable gas and the gaseous evaporative cooling medium to separate, which helps increase the proportion of non-condensable gas in the mixed gas entering the valve body through the primary vent, thereby improving venting efficiency.

[0032] Furthermore, the reciprocating motion of the valve stem causes the return port to open intermittently. When the secondary vent port opens, the mixed gas enters the valve body cavity from the primary vent port. At this time, the return port closes, preventing the mixed gas from splashing the liquid evaporative cooling medium accumulated at the return port, thus avoiding affecting the return flow of the evaporative cooling medium. Simultaneously, the intermittent venting provides recovery time for the cooling fins, preventing continuous operation from causing a temperature rise, which would reduce the condensation effect and affect the condensation of the evaporative cooling medium. Attached Figure Description

[0033] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of the vapor-liquid separation and exhaust device for recovering evaporative cooling medium provided in an embodiment of the present invention;

[0035] Figure 2 This is a front view of the vapor-liquid separation and exhaust device for recovering evaporative cooling medium provided in an embodiment of the present invention;

[0036] Figure 3 The right view of the vapor-liquid separation and exhaust device for recovering evaporative cooling medium provided in an embodiment of the present invention;

[0037] Figure 4 for Figure 3 Sectional view at point AA;

[0038] Figure 5 for Figure 3 Sectional view at point BB;

[0039] Figure 6 for Figure 5 Enlarged view of point C in the middle;

[0040] Figure 7 for Figure 4 A three-dimensional image;

[0041] Figure 8 This is a schematic diagram of the reciprocating shaft.

[0042] Icons: 100, Valve body; 200, Valve stem; 300, Drive mechanism; 110, Cooling fins; 120, Primary exhaust port; 130, Secondary exhaust port; 140, Liquid return port; 150, Shifting groove; 210, Reciprocating shaft; 220, Gasket; 230, Limiting spring; 240, Sealing gasket; 250, Return spring; 211, First slide rod; 212, Shaft body; 213, Second slide rod; 214, Pressure cap; 215, Guide plate; 310, Drive gear; 320, Transmission gear set; 330, Drive gear set; 340, Rack; 350, Spring; 360, Handle; 370, Scale ring; 321, First gear; 322, Second gear; 331, Third gear; 332, Fourth gear. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0045] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0046] In water-cooled condensers of evaporative cooling systems, the heat exchange efficiency of the condenser often drops significantly due to the mixing of non-condensable gases. This phenomenon can be solved by venting steam, but traditional venting methods discharge non-condensable gases and vaporized evaporative cooling media together, resulting in media waste.

[0047] In view of this, the present invention provides a vapor-liquid separation and exhaust device for recovering evaporative cooling medium, comprising a valve body 100 and a valve stem 200; the valve body 100 is provided with cooling fins 110 and has a primary exhaust port 120, a secondary exhaust port 130 and a liquid return port 140, the primary exhaust port 120 being located below the secondary exhaust port 130, the liquid return port 140 being connected to the primary exhaust port 120, and the primary exhaust port 120 being connected to the evaporative cooling system; the two ends of the valve stem 200 are respectively inserted into the primary exhaust port 120 and the secondary exhaust port 130. The valve stem 200 moves upward to open the secondary exhaust port 130 and close the return port 140, allowing the mixed gas to enter the valve body 100. The cooling fins 110 condense the evaporative cooling medium in the mixed gas into a liquid state, and the non-condensable gas in the mixed gas is discharged from the secondary exhaust port 130. The valve stem 200 moves downward to close the secondary exhaust port 130 and open the return port 140, allowing the liquid evaporative cooling medium to flow back to the evaporative cooling system through the return port 140 and the primary exhaust port 120 in sequence.

[0048] The vapor-liquid separation and exhaust device for recovering evaporative cooling medium provided by the present invention cools the mixed gas composed of evaporative cooling medium and non-condensable gas through cooling fins 110, so that the gaseous evaporative cooling medium condenses into liquid and flows back into the evaporative cooling system under the action of gravity to avoid the loss of evaporative cooling medium. At the same time, the non-condensable gas is discharged under the pressure difference inside and outside the valve body 100.

[0049] When valve stem 200 closes secondary vent 130 and opens liquid return port 140, the pressure inside valve body 100 is the same as the pressure of the evaporative cooling system, allowing the liquid evaporative cooling medium to flow smoothly back to the evaporative cooling system. The reciprocating motion of valve stem 200 intermittently opens secondary vent 130, allowing sufficient non-condensable gas to accumulate above cooling fins 110 and providing time for non-condensable gas, which is horizontally farther from primary vent 120, to converge towards it. This intermittent venting allows time for the non-condensable gas and the gaseous evaporative cooling medium to separate, which helps increase the proportion of non-condensable gas in the mixed gas entering valve body 100 through primary vent 120, thereby improving venting efficiency.

[0050] Furthermore, the reciprocating motion of the valve stem 200 causes the return port 140 to open intermittently. When the secondary vent port 130 opens, the mixed gas enters the inner cavity of the valve body 100 from the primary vent port 120. At this time, the return port 140 closes, which prevents the mixed gas from splashing the liquid evaporative cooling medium accumulated at the return port 140, thus avoiding affecting the return flow of the evaporative cooling medium. At the same time, the intermittent venting mode provides recovery time for the cooling fins 110, preventing continuous operation from causing the temperature to rise, which would reduce the condensation effect and affect the condensation of the evaporative cooling medium.

[0051] The following combination Figures 1-8The structure and shape of the vapor-liquid separation and exhaust device for recovering evaporative cooling medium provided in this embodiment are described in detail below:

[0052] In this embodiment, the valve stem 200 includes a reciprocating shaft 210, a gasket 220, a limiting spring 230, a sealing gasket 240, and a return spring 250, as follows: Figure 4 , Figure 5 , Figure 6 As shown. Specifically, the reciprocating shaft 210 includes a first slide bar 211, a shaft body 212, a second slide bar 213, a pressure cap 214, and a guide plate 215, as shown. Figure 8 As shown in the diagram, the pressure cap 214, the first slide rod 211, the shaft body 212, and the second slide rod 213 are connected in sequence. The first slide rod 211 is inserted into the primary exhaust port 120, and the second slide rod 213 is inserted into the secondary exhaust port 130 and extends out of the secondary exhaust port 130 to connect with the pressure cap 214. For ease of installation, the pressure cap 214 and the first slide rod 211 can be connected by a threaded connection.

[0053] In this embodiment, the first slide bar 211 is configured as a U-shaped structure with its opening facing away from the shaft body 212, i.e., the U-shaped opening faces downwards. Gaskets 220 are provided on both sides of the U-shaped structure. The gaskets 220 are connected to the first slide bar 211 and move with the first slide bar 211 to open and close the return port 140. Figure 5 As shown.

[0054] In this embodiment, the limiting spring 230 is installed at the opening of the first slide rod 211 to apply a pushing force to both sides of the U-shaped structure, thereby causing the gasket 220 to abut against the inner wall of the valve body 100. Specifically, as shown... Figure 5 As shown, the first slide rod 211 has connecting posts on both sides of its U-shaped structure. The two ends of the limiting spring 230 are respectively fitted onto the connecting posts and abut against both sides of the U-shaped structure, thereby causing the two gaskets 220 to abut against the inner wall of the valve body 100 to ensure the closed state of the return port 140. The gaskets 220 are made of elastic material to improve sealing and ensure smooth movement; specifically, rubber, polyurethane, polytetrafluoroethylene, etc., can be used.

[0055] In this embodiment, the primary exhaust port 120 is designed as a rectangular through hole to facilitate machining and mating with the gasket 220. It should be noted that the primary exhaust port 120 is always open throughout the entire operation.

[0056] In this embodiment, the sealing gasket 240 is fitted onto the second slide rod 213 and positioned between the pressure cap 214 and the valve body 100 to seal the secondary exhaust port 130. In the closed state, the pressure cap 214 presses the sealing gasket 240 tightly against the valve body 100. The sealing gasket 240 is connected to the pressure cap 214 to move under the drive of the reciprocating shaft 210, thereby opening and closing the secondary exhaust port 130.

[0057] In this embodiment, one end of the return spring 250 is connected to the valve body 100 and the other end is connected to the shaft body 212. It is used to apply a thrust to the shaft body 212 to move the shaft body 212 toward the primary exhaust port 120, thereby driving the sealing gasket 240 to move downward so that the secondary exhaust port 130 returns to the closed state.

[0058] In this embodiment, the guide plate 215 is horizontally disposed below the cooling fins 110 and connected to the shaft body 212. It is used to block the mixed gas entering from the primary exhaust port 120, so that the mixed gas diffuses to the surroundings and fully contacts the cooling fins 110, thereby allowing the evaporative cooling medium in the mixed gas to be fully cooled and become liquid.

[0059] In an optional embodiment, the cooling fins 110 are configured with a triangular structure, thereby cooperating with the guide plate 215 to ensure sufficient contact between the mixed gas and the cooling fins 110 and increase the contact area, achieving adequate cooling. Figure 4 As shown. At this time, due to the limited internal space, a narrow gap is formed between the valve body 100 and the valve stem 200. The mixed gas flows upward along the inner wall of the valve body 100, and the hypotenuse of the triangle increases the contact distance and contact area, realizing full contact between the mixed gas and the cooling fins 110.

[0060] In this embodiment, the valve stem 200 is slidably connected to the valve body 100. Specifically, the shaft body 212 has an elongated hole extending along the sliding direction, such as... Figure 8 As shown, the valve body 100 is provided with corresponding protrusions extending along the sliding direction of the shaft body 212. The protrusions are inserted into the elongated holes to limit and guide the sliding, ensuring the stable movement of the valve stem 200. In this embodiment, the shaft body 212 is set as a rectangular frame structure to facilitate the installation of various parts.

[0061] In this embodiment, to achieve the reciprocating motion of the valve stem 200, the vapor-liquid separation and exhaust device for recovering the evaporative cooling medium further includes a drive mechanism 300 for driving the valve stem 200 to move upward. Specifically, the drive mechanism 300 includes a drive gear 310, a transmission gear set 320, a drive gear set 330, a rack 340, and a spring 350, as shown below. Figure 4 , Figure 8 As shown. The drive gear 310, transmission gear set 320, and drive gear set 330 are all rotatably mounted on the valve body 100; one end of the spring 350 is connected to the drive gear 310, and the other end is connected to the valve body 100; the rack 340 is vertically arranged and mounted on the valve stem 200. To reduce the number of parts and processing costs, the reciprocating shaft 210 and the rack 340 can be integrally machined, such as... Figure 8 As shown.

[0062] In this embodiment, the transmission gear set 320 includes a first gear 321 and a second gear 322 coaxially mounted, and the drive gear set 330 includes a third gear 331 and a fourth gear 332 coaxially mounted; the driving gear 310 meshes with the first gear 321, the second gear 322 meshes with the third gear 331, and the fourth gear 332 meshes with the rack 340 and is configured as a sector gear to achieve intermittent power transmission.

[0063] To increase the working time of the mainspring 350 and ensure smooth transmission, the number of teeth on the drive gear 310 is greater than that on the first gear 321, the number of teeth on the second gear 322 is greater than that on the first gear 321, and the number of teeth on the third gear 331 is less than that on the second gear 322. Thus, by limiting the transmission ratio, multiple reciprocating motions can be achieved by winding the mainspring 350 once.

[0064] In this embodiment, to prevent the valve stem 200 from moving when the mainspring 350 is wound, and to reduce the resistance of winding the mainspring 350, a displacement groove 150 is provided on the valve body 100. The shaft of the transmission gear set 320 is inserted into the displacement groove 150 and can slide along the displacement groove 150 to disengage the transmission gear set 320 and prevent power transmission. The position of the transmission gear set 320 can be locked by means of a nut, that is, the nut is screwed onto the shaft of the transmission gear set 320 and abuts against the valve body 100.

[0065] Furthermore, the drive mechanism 300 also includes a handle 360 ​​and a scale ring 370, such as Figure 2 As shown. The handle 360 ​​is connected to the drive gear 310 and is used to drive the drive gear 310 to rotate and tighten the spring 350. The scale ring 370 is installed on the valve body 100 and is coaxially arranged with the drive gear 310. It is used to indicate the position of the handle 360 ​​and thus display the rotation angle of the drive gear 310, thereby measuring the exhaust time and remaining working time.

[0066] Furthermore, a sensor can be installed on the scale ring 370. When the handle 360 ​​is turned to the sensor position, the sensor is triggered to remind the operator that the mainspring 350 needs to be re-tightened.

[0067] In this embodiment, the valve body 100 is threadedly connected to the evaporative cooling system.

[0068] The working process of the vapor-liquid separation and exhaust device for recovering the evaporative cooling medium provided in this embodiment is as follows:

[0069] The transmission gear set 320 is moved to disengage it, and the handle 360 ​​is turned to drive the drive gear 310 to rotate, thereby winding the mainspring 350. The transmission gear set 320 is then moved back to its original position and fixed, restoring the engagement state. At this time, the secondary exhaust port 130 remains closed under the action of the return spring 250.

[0070] After the mainspring 350 has finished charging, the drive gear 310 rotates in the opposite direction under the drive of the mainspring 350, thereby driving the transmission gear set 320 to rotate. The transmission gear set 320 drives the drive gear set 330 to rotate, thereby realizing the rotation of the fourth gear 332. Since the fourth gear 332 is a sector gear, its meshing state with the rack 340 is intermittent.

[0071] When the fourth gear 332 meshes with the rack 340, it drives the valve stem 200 to overcome the spring force of the return spring 250 and move upward, thereby opening the secondary exhaust port 130 and closing the return port 140. At this time, under the action of the pressure difference between the evaporative cooling system and the outside, the mixed gas enters the inner cavity of the valve body 100 from the primary exhaust port 120 and is condensed by the cooling fins 110 under the guidance of the guide plate 215. The evaporative cooling medium in the mixed gas condenses into a liquid state, while the non-condensable gas is discharged upward through the secondary exhaust port 130. At this time, closing the return port 140 can prevent the airflow from splashing the liquid evaporative cooling medium accumulated in the return port 140, thus reducing the reflux effect.

[0072] When the fourth gear 332 disengages from the rack 340, under the action of the return spring 250 and gravity, the valve stem 200 moves downward to close the secondary exhaust port 130 and open the liquid return port 140. At this time, the pressure inside the valve body 100 is consistent with that of the evaporative cooling system, and the condensed liquid evaporative cooling medium can smoothly flow back into the evaporative cooling system through the liquid return port 140 and the primary exhaust port 120, avoiding the upward airflow affecting the return flow.

[0073] The vapor-liquid separation exhaust device for recovering the evaporative cooling medium provided in this embodiment uses an intermittent exhaust method. Because non-condensable gases accumulate above the condenser of the evaporative cooling system, a certain amount of time is required for the non-condensable gases accumulated above the condenser to disperse to the primary exhaust port 120 during the exhaust process. Therefore, the intermittent exhaust method allows time for the stratification of the non-condensable gases and the gaseous evaporative cooling medium, increasing the proportion of non-condensable gases in the mixed gas, thereby increasing exhaust efficiency and facilitating the discharge of non-condensable gases. It should be noted that the density of the gaseous evaporative cooling medium is greater than that of the non-condensable gases; therefore, the two will stratify, with the non-condensable gases accumulating at the top.

[0074] In addition, the intermittent exhaust method is conducive to the recovery of the cooling fins 110, and avoids the cooling fins 110 from working continuously, which would lead to a decrease in the condensation effect and result in the vaporized evaporating cooling medium not being able to condense sufficiently, causing the vaporized evaporating cooling medium to be discharged through the secondary exhaust port 130.

[0075] This embodiment uses a 350-stroke spring-driven mechanism, eliminating the need for wiring. It can store sufficient kinetic energy and release it continuously and smoothly through gear ratio adjustment. This driving method requires no electrical supply and has a long enough operating time; the brief 350-stroke spring-driven energy storage process does not affect exhaust gas, improving the ease of use and flexibility of the device.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vapor-liquid separation and exhaust device for recovering evaporative cooling medium, characterized in that, Includes valve body and valve stem; The valve body is provided with cooling fins and has a primary exhaust port, a secondary exhaust port and a liquid return port. The primary exhaust port is located below the secondary exhaust port. The liquid return port is connected to the primary exhaust port. The primary exhaust port is connected to the evaporative cooling system. The valve stem is inserted into the primary exhaust port and the secondary exhaust port at both ends and can reciprocate in the vertical direction. The valve stem moves upward to open the secondary exhaust port and close the liquid return port, the mixed gas enters the valve body, the cooling fins condense the evaporative cooling medium in the mixed gas into liquid, and the non-condensable gas in the mixed gas is discharged from the secondary exhaust port. The valve stem moves downward to close the secondary exhaust port and open the liquid return port, and the liquid evaporative cooling medium flows back to the evaporative cooling system through the liquid return port and the primary exhaust port in sequence. The valve stem includes a reciprocating shaft and a gasket, and the reciprocating shaft includes a first slide rod, a shaft body, and a second slide rod connected in sequence. The first slide bar is inserted into the primary exhaust port, and the second slide bar is inserted into the secondary exhaust port; The gasket is connected to the first slide bar and moves with the first slide bar to open and close the return port; The valve stem also includes a return spring, one end of which is connected to the valve body and the other end of which is connected to the shaft body, for applying a thrust to the shaft body to move the shaft body toward the primary exhaust port; The valve stem includes a guide plate, which is horizontally disposed below the cooling fins; It also includes a drive mechanism, which comprises a drive gear, a transmission gear set, a drive gear set, a rack, and a spring; The transmission gear set includes a first gear and a second gear mounted coaxially, and the drive gear set includes a third gear and a fourth gear mounted coaxially. One end of the spring is connected to the drive gear, and the other end is connected to the valve body; the rack is vertically arranged and installed on the valve stem; The driving gear meshes with the first gear, the second gear meshes with the third gear, and the fourth gear meshes with the rack and is configured as a sector gear; The number of teeth of the driving gear is greater than that of the first gear, the number of teeth of the second gear is greater than that of the first gear, and the number of teeth of the third gear is less than that of the second gear.

2. The vapor-liquid separation and exhaust device for recovering evaporative cooling medium according to claim 1, characterized in that, The first slide bar is configured as a U-shaped structure with its opening facing away from the shaft body, and the gaskets are provided on both sides of the U-shaped structure.

3. The vapor-liquid separation and exhaust device for recovering evaporative cooling medium according to claim 2, characterized in that, The valve stem also includes a limiting spring, which is installed in the opening of the first slide bar to apply a thrust to both sides of the U-shaped structure so that the gasket abuts against the inner wall of the valve body.

4. In the vapor-liquid separation and exhaust device for recovering evaporative cooling medium according to claim 1, the gasket is made of an elastic material.

5. The vapor-liquid separation and exhaust device for recovering evaporative cooling medium according to claim 1, characterized in that, The valve stem also includes a sealing gasket, and the reciprocating shaft also includes a pressure cap; The end of the second slide rod away from the shaft body extends through the secondary vent and connects to the pressure cap. The sealing gasket is fitted onto the second slide rod and positioned between the pressure cap and the valve body. The sealing gasket is connected to the pressure cap.

6. The vapor-liquid separation and exhaust device for recovering evaporative cooling medium according to claim 1, characterized in that, The drive mechanism also includes a handle and a scale ring; The handle is connected to the drive gear, and the scale ring is mounted on the valve body and coaxially arranged with the drive gear to indicate the position of the handle.

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