Low-noise efficient compact direct contact condensing device

Abstract

The invention relates to the technical field of heat exchange devices, and provides a low-noise efficient compact direct contact condensing device which comprises a shell, a negative Poisson's ratio permeation structure and a sprayer. A heat exchange cavity is formed in the shell, and an inlet and an outlet which are communicated with the heat exchange cavity are formed in the shell. The negative Poisson's ratio permeation structure is arranged in the heat exchange cavity, a spraying cavity and a plurality of interlayer channels are constructed on the negative Poisson's ratio permeation structure, and each interlayer channel communicates with the spraying cavity, the inlet and the outlet. The sprayer is arranged in the spraying cavity and used for spraying cooling water to the interlayer channel so that the cooling water can form a cooling liquid film on the side wall of the interlayer channel. According to the low-noise efficient compact direct contact condensing device, when the sprayer sprays to the negative Poisson's ratio permeation structure to form a cooling liquid film, the negative Poisson's ratio permeation structure can play a role in buffering and damping cooling water jet flow, and impact and mechanical vibration in the operation process can be effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of heat exchange devices, and in particular to a low-noise, high-efficiency, compact direct contact condensing device. Background Art

[0002] A direct contact condenser is a cooling device that exchanges heat between the cooling medium (usually liquid) and the cooled medium (usually vapor) through direct contact. Compared with traditional shell and tube condensers, it has the advantages of high heat transfer coefficient, compact equipment, small space occupation, no risk of heat exchange tube corrosion and blockage, and low maintenance cost. It is widely used in the fields of electricity, chemical industry, etc.

[0003] Large direct contact condensing equipment usually adopts liquid film condensation scheme. Cooling water is sprayed onto the baffle through a nozzle, and a liquid film is formed by impact, which directly contacts the steam and condenses it. When the cooling water hits the baffle, it will arouse strong mechanical vibration of the baffle, water chamber and even the equipment shell, so that the condenser will have a loud running noise during operation. Summary of the invention

[0004] The invention provides a low-noise, high-efficiency and compact direct contact condensing device, which is used to solve the defect of large operating vibration and noise of the direct contact condenser in the prior art.

[0005] The present invention provides a low-noise, high-efficiency, compact direct contact condensation device, comprising: A shell, wherein a heat exchange cavity is configured in the shell, and an inlet and an outlet communicating with the heat exchange cavity are provided on the shell; A negative Poisson's ratio permeation structure is arranged in the heat exchange cavity, and a spray cavity and a plurality of interlayer channels are constructed on the negative Poisson's ratio permeation structure, and each of the interlayer channels is respectively connected with the spray cavity, the inlet and the outlet; A sprayer is arranged in the spraying cavity, and is used for spraying cooling water to the interlayer channel so that the cooling water forms a cooling liquid film on the side wall of the interlayer channel.

[0006] According to the low-noise, high-efficiency, compact direct contact condensation device of the present invention, the spray chamber is arranged along the central axis of the heat exchange chamber, and a plurality of interlayer channels are arranged around the outside of the spray chamber along the circumference of the heat exchange chamber.

[0007] According to the low-noise, high-efficiency, compact direct contact condensing device of the present invention, the inlet is located at the top of the shell, and the outlet is located at the bottom of the shell.

[0008] According to the low-noise, high-efficiency, compact direct contact condensation device of the present invention, the sprayer includes a water chamber and a plurality of nozzles, the water chamber is used to accommodate cooling water; the plurality of nozzles are arranged on the side wall of the water chamber, each of the nozzles is connected to the inner cavity of the water chamber, and the plurality of nozzles are arranged at intervals in the vertical direction.

[0009] According to the low-noise, high-efficiency, compact direct contact condensation device of the present invention, the width of the interlayer channel gradually decreases from bottom to top.

[0010] According to the low-noise, high-efficiency, compact direct contact condensation device of the present invention, the water chamber has a tapered structure from top to bottom.

[0011] According to the low-noise, high-efficiency, compact direct contact condensation device of the present invention, a guide area and a water collection area are provided between the negative Poisson's ratio permeation structure and the outlet, a plurality of guide plates arranged at intervals are provided in the guide area, a first guide channel is formed between adjacent guide plates, one end of the first guide channel is connected to the interlayer channel, and the other end is connected to the water collection area, and the water collection area is connected to the outlet.

[0012] The low-noise, high-efficiency, compact direct contact condensing device according to the present invention further comprises a cooling water header tank, the cooling water header tank being arranged between the sprayer and the outlet, the inner cavity of the cooling water header tank being in communication with the sprayer to supply cooling water to the sprayer, and the cooling water header tank being provided with a cooling water inlet for connecting the inner cavity of the cooling water header tank with an external water supply pipeline; The guide area is arranged around the outside of the cooling water collecting tank.

[0013] According to the low-noise, high-efficiency, compact direct contact condensing device of the present invention, a plurality of guide vanes are arranged at intervals along the circumference of the heat exchange chamber, one end of the guide vane abuts against the outer wall of the cooling water collecting tank, and the other end abuts against the cavity wall of the heat exchange chamber.

[0014] According to the low-noise, high-efficiency, compact direct contact condensation device of the present invention, a plurality of guide plates are arranged between the inlet and the negative Poisson's ratio permeation structure to form a plurality of second guide channels connecting the inlet and the negative Poisson's ratio permeation structure.

[0015] The low-noise, high-efficiency, compact direct contact condensation device of the present invention has a heat exchange chamber constructed in a shell, and an inlet and an outlet are respectively arranged at both ends of the heat exchange chamber, so that the steam to be condensed is passed into the heat exchange chamber from the inlet, and is discharged from the outlet after being condensed into condensed water in the heat exchange chamber. At the same time, a negative Poisson's ratio permeation structure and a sprayer are arranged in the heat exchange chamber, and the sprayer is arranged in the spraying chamber of the negative Poisson's ratio permeation structure. The sprayer is used to spray cooling water to the negative Poisson's ratio permeation structure. When the cooling water contacts the negative Poisson's ratio permeation structure, it is buffered by the skeleton part of the negative Poisson's ratio permeation structure and penetrates into the interlayer channel, forming a cooling liquid film on the interlayer channel, so that the steam is cooled and condensed into condensed water after heat exchange with the cooling liquid film when passing through the interlayer channel. From the above, it can be seen that in the low-noise, high-efficiency, compact direct contact condensation device of the present invention, when the sprayer sprays to the negative Poisson's ratio permeation structure to form a cooling liquid film, the negative Poisson's ratio permeation structure can play a role in buffering and reducing vibration of the cooling water jet, and can effectively reduce the impact and mechanical vibration during operation, thereby effectively solving the defect of large operating vibration and noise in the direct contact condenser in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of a low-noise, high-efficiency, compact direct contact condensation device provided by an embodiment of the present invention.

[0018] Figure 2 It is a cross-sectional view of a negative Poisson's ratio permeability structure provided by an embodiment of the present invention.

[0019] Figure 3 yes Figure 2 A partial enlarged view of position A in the middle.

[0020] Figure 4 It is a cross-sectional view of a negative Poisson's ratio permeability structure provided by another embodiment of the present invention.

[0021] Figure 5 yes Figure 4 A partial enlarged view of position B in the middle.

[0022] Figure 6 It is a cross-sectional view of a negative Poisson's ratio permeability structure provided by another embodiment of the present invention.

[0023] Figure 7 yes Figure 6 A partial enlarged view of the C position in the middle.

[0024] Figure 8 It is a cross-sectional view of a negative Poisson's ratio permeability structure provided by another embodiment of the present invention.

[0025] Fig. 9 yes Figure 8 A partial enlarged view of the D position in the middle.

[0026] Fig.10 It is a cross-sectional view of the guide area and the cooling water collecting tank provided in an embodiment of the present invention.

[0027] Fig.11 yes Fig.10 A partial enlarged view of position E in the middle.

[0028] Reference numerals: 1. Low noise, high efficiency and compact direct contact condensing device; 11. Shell; 111. Heat exchange chamber; 112. Inlet; 113. Outlet; 114. Guide area; 115. Water collection area; 116. Guide vane; 117. First guide channel; 118. Guide plate; 119. Second guide channel; 12. Negative Poisson's ratio permeability structure; 121. Spray chamber; 122. Interlayer channel; 13. Sprinkler; 131. Water chamber; 132. Nozzle; 14. Cooling water collecting tank; 141. Cooling water inlet; 15. Liquid level meter. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Combine the following Figure 1-Figure 11 The present invention is described as a low noise, high efficiency and compact direct contact condensing device.

[0031] like Figures 1 to 9As shown, the present invention provides a low-noise, high-efficiency, compact direct contact condensation device 1, comprising a shell 11, a negative Poisson's ratio permeation structure 12 and a sprayer 13. A heat exchange chamber 111 is constructed in the shell 11, and an inlet 112 and an outlet 113 connected to the heat exchange chamber 111 are provided on the shell 11. The negative Poisson's ratio permeation structure 12 is arranged in the heat exchange chamber 111, and a spraying chamber 121 and a plurality of interlayer channels 122 are constructed on the negative Poisson's ratio permeation structure 12, and each interlayer channel 122 is connected to the spraying chamber 121, the inlet 112 and the outlet 113 respectively. The sprayer 13 is arranged in the spraying chamber 121, and the sprayer 13 is used to spray cooling water to the interlayer channel 122, so that the cooling water forms a cooling liquid film on the side wall of the interlayer channel 122.

[0032] In this embodiment, a heat exchange chamber 111 is constructed in the shell 11, and an inlet 112 and an outlet 113 are respectively provided at both ends of the heat exchange chamber 111. A negative Poisson's ratio permeation structure 12 and a sprayer 13 are provided in the heat exchange chamber 111 as a heat exchange structure. The inlet 112 is used to pass steam to be condensed. The steam entering the heat exchange chamber 111 is condensed into condensed water after passing through the heat exchange structure and is discharged from the outlet 113.

[0033] Specifically, it can be understood that the negative Poisson's ratio permeation structure 12 is made of a negative Poisson's ratio metamaterial composed of a periodic arrangement of typical cells such as an inner hexagonal honeycomb, and mainly includes a skeleton part and a sandwich channel 122 formed in the gap of the skeleton, and the skeleton part is also configured with a spraying cavity 121 for setting the sprayer 13. Among them, both ends and sides of the sandwich channel 122 have openings, and the openings at both ends are used to communicate with the inlet 112 and the outlet 113 respectively, and the openings on the side are formed on the cavity wall of the spraying cavity 121 so as to communicate with the spraying cavity 121.

[0034] The sprayer 13 is arranged in the spraying cavity 121, and is used to spray cooling water on the cavity wall of the spraying cavity 121, so that the cooling water penetrates into the interlayer channel 122 through the opening on the cavity wall, and forms a cooling liquid film on the side wall of the interlayer channel 122. At the same time, when the cooling water contacts the skeleton part of the negative Poisson's ratio permeation structure 12, the negative Poisson's ratio metamaterial can play a good buffering and vibration reduction role on the jet of cooling water, so as to reduce the vibration and noise generated during the operation of the condensing device. At the same time, the interlayer channel 122 of the negative Poisson's ratio permeation structure 12 has a very large specific surface area, so that the cooling water can be fully spread on the side wall of the interlayer channel 122, so that the steam to be condensed can fully contact with the cooling liquid film for heat exchange after entering the interlayer channel 122, which is conducive to reducing the volume of the entire negative Poisson's ratio permeation structure 12 while improving the heat exchange efficiency, and is conducive to reducing the volume of the entire condensing device.

[0035] The low-noise, highly efficient and compact direct contact condensation device 1 of the present invention has a heat exchange chamber 111 constructed inside the housing 11, and an inlet 112 and an outlet 113 are respectively arranged at both ends of the heat exchange chamber 111, so that the steam to be condensed is introduced into the heat exchange chamber 111 from the inlet 112, and after being condensed into condensed water in the heat exchange chamber 111, it is discharged from the outlet 113. At the same time, a negative Poisson's ratio permeable structure 12 and a sprinkler 13 are arranged in the heat exchange chamber 111. The sprinkler 13 is arranged in the sprinkling chamber 121 of the negative Poisson's ratio permeable structure 12. The sprinkler 13 is used to spray cooling water onto the negative Poisson's ratio permeable structure 12. When the cooling water contacts the negative Poisson's ratio permeable structure 12, it is buffered by the skeleton part of the negative Poisson's ratio permeable structure 12 and infiltrates into the interlayer channel 122, forming a coolant film on the interlayer channel 122. When the steam passes through the interlayer channel 122, it exchanges heat with the coolant film and then cools down and condenses into condensed water. As can be seen from the above, in the low-noise, highly efficient and compact direct contact condensation device 1 of the present invention, when the sprinkler 13 sprays onto the negative Poisson's ratio permeable structure 12 to form a coolant film, the negative Poisson's ratio permeable structure 12 can buffer and damp the cooling water jet, effectively reducing the impact and mechanical vibration during operation, and effectively solving the defect of large operation vibration and noise in the existing direct contact condenser.

[0036] It can be understood that according to the arrangement of the skeleton part formed by the negative Poisson's ratio metamaterial and the interlayer channel 122, a variety of negative Poisson's ratio permeable structures 12 can be designed.

[0037] Optionally, in some embodiments, as Figure 2 and Figure 3 shown, the negative Poisson's ratio permeable structure 12 includes multiple layers of skeletons arranged at intervals in the circumferential direction and multiple interlayer channels 122. Each layer of the skeleton is formed by laminating two layers of negative Poisson's ratio metamaterial layers. Each layer of the negative Poisson's ratio metamaterial layer is formed by connecting multiple typical cells of the negative Poisson's ratio metamaterial arranged flatly. Two interlayer channels 122 are arranged between adjacent two layers of skeletons.

[0038] In some other embodiments, as Figure 4 and Figure 5 shown, each layer of the skeleton of the negative Poisson's ratio permeable structure 12 is composed of a single layer of negative Poisson's ratio metamaterial layer, and one interlayer channel 122 is arranged between adjacent two layers of skeletons.

[0039] In still some other embodiments, as Figure 6 and Figure 7 shown, each layer of the skeleton of the negative Poisson's ratio permeable structure 12 is composed of a single layer of negative Poisson's ratio metamaterial layer, and three interlayer channels 122 are arranged between adjacent two layers of skeletons.

[0040] In yet some other embodiments, as Figure 8 and Fig. 9As shown, each skeleton layer of the negative Poisson's ratio permeation structure 12 is composed of three stacked layers of negative Poisson's ratio metamaterial layers, and an interlayer channel 122 is provided between two adjacent skeleton layers.

[0041] In some embodiments, Figures 1 to 9 As shown, the spray chamber 121 is arranged along the central axis of the heat exchange chamber 111 , and a plurality of interlayer channels 122 are arranged around the outer side of the spray chamber 121 along the circumference of the heat exchange chamber 111 .

[0042] In this embodiment, the spraying chamber 121 is arranged on the central axis of the heat exchange chamber 111, and a plurality of interlayer channels 122 are arranged circumferentially around the heat exchange chamber 111, so that the depth of each interlayer channel 122 in the radial direction of the heat exchange chamber 111 can be basically kept consistent, so that the cooling water sprayed by the sprayer 13 can evenly penetrate into each interlayer channel 122, so that the cooling liquid film can be evenly and fully spread on the side wall of each interlayer channel 122.

[0043] Specifically, in some embodiments, Figure 1 As shown, the inlet 112 is located at the top of the housing 11 , and the outlet 113 is located at the bottom of the housing 11 .

[0044] In this embodiment, by arranging the inlet 112 and the outlet 113 at the top and the bottom of the shell 11 respectively, the steam to be condensed enters the heat exchange chamber 111 from the inlet 112 at the top, enters the interlayer channel 122 of the negative Poisson's ratio permeation structure 12 under the action of gravity to exchange heat with the cooling liquid film, and is discharged from the outlet 113 at the bottom after condensation to form condensed water.

[0045] Specifically, in some embodiments, Figure 1 As shown, the sprayer 13 includes a water chamber 131 and a plurality of nozzles 132. The water chamber 131 is used to contain cooling water. The plurality of nozzles 132 are arranged on the side wall of the water chamber 131, each nozzle 132 is connected to the inner cavity of the water chamber 131, and the plurality of nozzles 132 are arranged at intervals along the vertical direction.

[0046] In this embodiment, the water chamber 131 is used to contain cooling water and supply water to the nozzle 132, and the nozzle 132 is used to spray cooling water onto the wall of the spraying cavity 121. At the same time, by arranging the plurality of nozzles 132 at intervals in the vertical direction, the jets sprayed by the plurality of nozzles 132 can evenly cover the wall of the spraying cavity 121, so that the cooling water can fully and evenly penetrate into each interlayer channel 122.

[0047] Furthermore, the nozzles 132 may be divided into a plurality of groups, and the plurality of groups of nozzles 132 are arranged at intervals in the vertical direction, and the plurality of nozzles 132 in the same group are arranged at intervals along the circumference of the water chamber 131 .

[0048] In some embodiments, the width of the interlayer channel 122 gradually decreases from bottom to top.

[0049] It is understandable that the plurality of nozzles 132 are arranged at intervals in the vertical direction, and the nozzle pressure difference of the nozzles 132 at different heights is different under the influence of gravity, and the corresponding jet speed is also different. In this embodiment, the width of the interlayer channel 122 is the distance between the two opposite side walls of the interlayer channel 122. By setting the width of the interlayer channel 122 to gradually decrease from bottom to top, the cooling water sprayed by the nozzles 132 at different heights can better reduce vibration and penetrate in the interlayer channel 122 at the corresponding height. Specifically, for the nozzle 132 with a lower height, the jet velocity is faster, while the width of the interlayer channel 122 opposite to the nozzle 132 is larger, which is beneficial to reducing the flow velocity of the cooling water jet, thereby reducing the structural vibration caused by the jet impact on the negative Poisson's ratio metamaterial, and the vibration reduction effect is better; for the nozzle 132 with a higher height, the jet velocity is lower, while the width of the interlayer channel 122 opposite to the nozzle 132 is smaller, which is beneficial to improving the permeability of the cooling water jet, so that the cooling water can fully penetrate and diffuse in the interlayer channel 122 at a lower jet velocity. While improving the uniformity of the distribution of cooling water in the interlayer channel 122, the pressure difference requirement of the nozzle 132 with a higher height can be reduced, thereby reducing the head and power of the cooling water pump.

[0050] It is understandable that there is usually a certain gap between the cavity wall of the spraying cavity 121 and the nozzle 132. The cooling water sprayed by the nozzle 132 will form a conical jet, and the gap between the cavity wall of the spraying cavity 121 and the nozzle 132 can make the cooling water jet cover a larger area when reaching the cavity wall of the spraying cavity 121, so that the cooling water can be sprayed on the cavity wall of the spraying cavity 121 more evenly.

[0051] In some embodiments, Figure 1 As shown, the water chamber 131 is a tapered structure from top to bottom.

[0052] In this embodiment, the water chamber 131 is formed into a tapered structure from top to bottom, so that the distance between the nozzle 132 with a higher height on the water chamber 131 and the cavity wall of the spraying cavity 121 is shortened, so as to reduce the velocity loss of the cooling water jet sprayed by the nozzle 132 with a higher height when reaching the cavity wall of the spraying cavity 121, which is conducive to improving the permeability of the cooling water jet at a higher position, so that the cooling water can fully penetrate and diffuse in the sandwich channel 122 at a lower jet velocity. The jet velocity of the cooling water sprayed by the nozzle 132 with a lower height is greater, and the distance between these nozzles 132 and the cavity wall of the spraying cavity 121 is relatively long, so as to reduce the jet velocity of the cooling water reaching the cavity wall of the spraying cavity 121, and reduce the structural vibration of the cooling water on the negative Poisson's ratio metamaterial while ensuring that the cooling water fully penetrates and diffuses in the sandwich channel 122.

[0053] In a specific embodiment, Figure 1 As shown, the spray chamber 121 is a cylindrical cavity, the water chamber 131 is a truncated cone chamber, and the spray chamber 121 and the water chamber 131 are coaxially arranged so that the cooling water jet sprayed by the nozzle 132 on the water chamber 131 can evenly cover the cavity wall of the spray chamber 121.

[0054] In some embodiments, Figure 1 , Fig.10 and Fig.11 As shown, a guide area 114 and a water collection area 115 are provided between the negative Poisson's ratio permeability structure 12 and the outlet 113. A plurality of guide plates 116 are provided in the guide area 114 at intervals. A first guide channel 117 is formed between adjacent guide plates 116. One end of the first guide channel 117 is connected to the interlayer channel 122, and the other end is connected to the water collection area 115. The water collection area 115 is connected to the outlet 113.

[0055] In this embodiment, a guide area 114 and a water collection area 115 connected in sequence are arranged between the negative Poisson's ratio permeation structure 12 and the outlet 113, so that the condensed water condensed in the negative Poisson's ratio permeation structure 12 flows through the guide area 114 and the water collection area 115 in sequence and then is discharged from the outlet 113, wherein a plurality of guide plates 116 are arranged in the guide area 114, and a first guide channel 117 for the condensed water to flow is formed between the guide plates 116. When the condensed water flows through the first guide channel 117, the condensed water flows along the guide plates 116, so as to prevent the condensed water droplets from directly dripping from the interlayer channel 122 to the inner wall of the heat exchange chamber 111 or dripping to the condensed water liquid surface below to generate noise. It can be understood that by adjusting the air intake or discharge volume of the condensing device, or adding water to the water collection area 115, the condensate level can be made to submerge the water collection area 115 and reach the guide area 114, so that the condensate flows along the guide plate 116 and merges into the condensate surface, and will not directly drip on the condensate surface to generate liquid flow excitation noise.

[0056] In some embodiments, Figure 1 , Fig.10 and Fig.11 As shown, the low-noise, high-efficiency, compact direct contact condensation device 1 further includes a cooling water header tank 14, which is disposed between the sprinkler 13 and the outlet 113. The inner cavity of the cooling water header tank 14 is in communication with the sprinkler 13 to supply cooling water to the sprinkler 13. The cooling water header tank 14 is provided with a cooling water inlet 141 for connecting the inner cavity of the cooling water header tank 14 and an external water supply pipeline. The guide area 114 is disposed around the outside of the cooling water header tank 14.

[0057] In this embodiment, the cooling water header tank 14 is disposed between the sprayer 13 and the outlet 113, and is used to store cooling water and supply cooling water to the sprayer 13. At the same time, the cooling water header tank 14 is also provided with a cooling water inlet 141, so as to replenish cooling water into the cooling water header tank 14 through an external pipeline. It can be understood that the cooling water header tank 14 is located in the middle of the heat exchange chamber 111, and the guide area 114 surrounds the outside of the cooling water header tank 14, so as to guide the condensed water to the collection area 115.

[0058] In a specific embodiment, Figures 1 to 11 As shown, the inlet 112 is located at the top of the shell 11, and the outlet 113 is located at the bottom of the shell 11. The sprinkler 13 is arranged along the central axis of the heat exchange chamber 111, and the negative Poisson's ratio permeation structure 12 is arranged around the outside of the sprinkler 13. The sprinkler 13 has multiple groups of nozzles 132, and the multiple groups of nozzles 132 are arranged at intervals along the vertical direction. Each group of nozzles 132 has multiple nozzles, and the multiple nozzles 132 in the same group are arranged at intervals along the circumference of the sprinkler 13. The cooling water collecting tank 14 is connected to the bottom of the sprinkler 13, and the cross-sectional size of the cooling water collecting tank 14 along the horizontal direction is larger than the cross-sectional size of the sprinkler 13 along the horizontal direction. The guide area 114 is arranged at the bottom of the negative Poisson's ratio permeation structure 12 and surrounds the cooling water collecting tank 14. The water collection area 115 is located at the bottom of the guide area 114.

[0059] During condensation, the steam to be condensed enters the heat exchange chamber 111 from the inlet 112, and then flows into the interlayer channel 122 of the negative Poisson's ratio permeation structure 12 under the action of gravity, and condenses into condensed water after heat exchange with the cooling liquid film in the interlayer channel 122, and passes through the guide area 114 and the water collection area 115 in turn, and is discharged from the outlet 113.

[0060] In some embodiments, Fig.10 and Fig.11 As shown, a plurality of guide vanes 116 are arranged at intervals along the circumference of the heat exchange cavity 111 , one end of the guide vane 116 abuts against the outer wall of the cooling water header 14 , and the other end abuts against the cavity wall of the heat exchange cavity 111 .

[0061] In this embodiment, a plurality of guide plates 116 are arranged at intervals along the circumference of the heat exchange chamber 111 to form a plurality of first guide channels 117 arranged along the circumference of the heat exchange chamber 111, thereby uniformly guiding the condensed water along the circumference of the heat exchange chamber 111 to the water collection area 115.

[0062] Specifically, in combination with the above-mentioned embodiments, under the flow of steam and the flow of condensed water in the vertical direction, the guide vane 116 can extend in the vertical direction. Further, the guide vane 116 can be in the shape of a corrugated plate, and the folds of the corrugations extend in the vertical direction to improve the longitudinal strength of the guide vane 116 and prevent the guide vane 116 from bending. Optionally, the guide vane 116 can be arranged at an angle so that the condensed water can slide along the guide vane 116 into the condensed water liquid surface below, avoiding the condensed water from dripping directly in the vertical direction to generate liquid flow excitation noise.

[0063] Optionally, in some embodiments, Figure 1 As shown, the low-noise, high-efficiency, compact direct contact condensation device 1 further includes a liquid level meter 15 , which is disposed on the housing 11 , and is used to detect the liquid level height of the guide area 114 .

[0064] In this embodiment, a liquid level gauge 15 is installed on the housing 11 to detect the liquid level in the diversion area 114. When the liquid level has a certain height in the diversion area 114, it can be ensured that the condensed water can directly flow into the condensed water surface along the first diversion channel 117, so as to avoid the condensed water dripping on the condensed water surface to generate liquid flow excitation noise; when the liquid level does not reach the diversion area 114, there is a certain distance between the condensed water surface and the outlet of the first diversion channel 117, and the condensed water will drip on the condensed water surface after leaving the first diversion channel 117, thereby generating noise. Therefore, when the liquid level does not reach the diversion area 114, the steam intake or drainage of the condensing device is adjusted, or water is added to the water collection area 115 so that the liquid level can reach the diversion area 114.

[0065] Optionally, in some embodiments, Figure 1 As shown, a plurality of guide plates 118 are disposed between the inlet 112 and the negative Poisson's ratio permeability structure 12 to form a plurality of second guide channels 119 connecting the inlet 112 and the negative Poisson's ratio permeability structure 12 .

[0066] In this embodiment, a plurality of guide plates 118 are provided between the inlet 112 and the negative Poisson's ratio permeation structure 12 to form a plurality of second guide channels 119 so as to divert the steam introduced into the inlet 112 and evenly introduce the steam into the interlayer channels 122 at various positions of the negative Poisson's ratio permeation structure 12, so that the steam and the cooling liquid film in the interlayer channels 122 are in full contact with each other for heat exchange and condensation into condensed water.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A low-noise, high-efficiency, compact direct contact condensation device, characterized in that: include: A shell, wherein a heat exchange cavity is configured in the shell, and an inlet and an outlet communicating with the heat exchange cavity are provided on the shell; A negative Poisson's ratio permeation structure is arranged in the heat exchange cavity, and a spray cavity and a plurality of interlayer channels are constructed on the negative Poisson's ratio permeation structure, and each of the interlayer channels is respectively connected with the spray cavity, the inlet and the outlet; A sprayer is arranged in the spraying cavity, and is used for spraying cooling water to the interlayer channel so that the cooling water forms a cooling liquid film on the side wall of the interlayer channel.

2. The low-noise, high-efficiency, compact direct contact condensation device according to claim 1 is characterized in that: The spraying chamber is arranged along the central axis of the heat exchange chamber, and a plurality of interlayer channels are arranged around the outer side of the spraying chamber along the circumference of the heat exchange chamber.

3. The low-noise, high-efficiency, compact direct contact condensation device according to claim 2 is characterized in that: The inlet is located at the top of the housing, and the outlet is located at the bottom of the housing.

4. The low-noise, high-efficiency, compact direct contact condensation device according to claim 3 is characterized in that: The sprayer includes a water chamber and a plurality of nozzles, wherein the water chamber is used to contain cooling water; the plurality of nozzles are arranged on the side wall of the water chamber, each of the nozzles is connected to the inner cavity of the water chamber, and the plurality of nozzles are arranged at intervals in the vertical direction.

5. The low-noise, high-efficiency, compact direct contact condensation device according to claim 3 is characterized in that: The width of the interlayer channel gradually decreases from bottom to top.

6. The low-noise, high-efficiency, compact direct contact condensation device according to claim 4 is characterized in that: The water chamber is in a gradually shrinking structure from top to bottom.

7. The low-noise, high-efficiency, compact direct contact condensation device according to claim 1, characterized in that: A guide area and a water collection area are provided between the negative Poisson's ratio permeability structure and the outlet. A plurality of guide plates are arranged at intervals in the guide area. A first guide channel is formed between adjacent guide plates. One end of the first guide channel is connected to the interlayer channel, and the other end is connected to the water collection area. The water collection area is connected to the outlet.

8. The low-noise, high-efficiency, compact direct contact condensation device according to claim 7, characterized in that: It also includes a cooling water header tank, which is arranged between the sprayer and the outlet, the inner cavity of the cooling water header tank is communicated with the sprayer to supply cooling water to the sprayer, and the cooling water header tank is provided with a cooling water inlet for connecting the inner cavity of the cooling water header tank and an external water supply pipeline; The guide area is arranged around the outside of the cooling water collecting tank.

9. The low-noise, high-efficiency, compact direct contact condensation device according to claim 8, characterized in that: The plurality of guide vanes are arranged at intervals along the circumference of the heat exchange cavity, one end of the guide vane abuts against the outer wall of the cooling water collecting tank, and the other end abuts against the cavity wall of the heat exchange cavity.

10. The low-noise, high-efficiency, compact direct contact condensation device according to claim 1, characterized in that: A plurality of guide plates are arranged between the inlet and the negative Poisson's ratio permeation structure to form a plurality of second guide channels connecting the inlet and the negative Poisson's ratio permeation structure.

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