Direct contact condenser

Abstract

The present invention provides a direct contact condenser, comprising: a housing, an installation cavity is arranged inside the housing; a three-dimensional reticular cooling module, which is arranged in the installation cavity, the three-dimensional reticular cooling module comprises a plurality of basic fiber structure units connected to each other, mesh holes are formed between the basic fiber structure units, and each basic fiber structure unit is formed by twisting a plurality of hydrophilic fibers; and a water supply structure, which comprises a cooling water pipe corresponding to the three-dimensional reticular cooling module, and the cooling water pipe is used for conveying a cooling medium to the three-dimensional reticular cooling module. The direct contact condenser provided by the present invention aims to solve the problems of large volume and low condensation efficiency of the condenser in the traditional direct contact condensation technology.

Description

Technical Field

[0001] The present invention relates to the technical field of condensation devices, and particularly to a direct contact condenser. Background Art

[0002] The condensers used in thermal power plants and the like are mainly surface condensers and mixed condensers. Among them, the mixed condenser is also called a direct contact condenser. In the direct contact condenser, working fluids with different temperatures (such as water vapor and cooling water) directly contact for heat exchange, that is, the exhaust steam of the steam turbine directly contacts the cooling water surface for condensation, and then continues to participate in the thermal cycle after mixing with the cooling water. Compared with the surface condenser, this type of condenser has no intermediate heat transfer link and theoretically has a higher heat transfer efficiency.

[0003] Generally, direct contact condensers include liquid column type, liquid film type and jet type. However, at present, the liquid column type direct contact condenser and the liquid film type direct contact condenser are limited by the columnar liquid film back plate and the liquid film size, and the heat transfer surface density per unit volume is relatively limited, resulting in a larger volume of the condenser;

[0004] The liquid film type and jet type condensers require special film-forming devices or atomizing nozzles, and maintaining the film-forming or atomizing effect has relatively strict requirements for the flow rate, pressure, etc. of the cooling water;

[0005] In actual use, the liquid film type and jet type condensers require additional equipment such as pumps to maintain the operation of the condenser, and the film-forming or atomizing conditions pose extremely high requirements for the operation of the pumps and other equipment. Otherwise, the effect of the condenser will be greatly reduced or even fail. Summary of the Invention

[0006] The present invention provides a direct contact condenser to solve the problems of large volume and low condensation efficiency of the condenser in the traditional technology.

[0007] In view of the problems existing in the prior art, an embodiment of the present invention provides a direct contact condenser, including:

[0008] A housing, in which an installation cavity is provided;

[0009] A three-dimensional net-shaped cooling module, disposed in the installation cavity. The three-dimensional net-shaped cooling module includes a plurality of fiber structure basic units connected to each other. Mesh holes are formed between the fiber structure basic units. Each fiber structure basic unit is formed by twisting a plurality of hydrophilic fibers; and,

[0010] A water supply structure, including a cooling water pipe corresponding to the three-dimensional net-shaped cooling module, and the cooling water pipe is used to convey a cooling medium to the three-dimensional net-shaped cooling module.

[0011] A direct contact condenser provided by the present invention, wherein a plurality of three-dimensional reticular cooling modules are included, and the cooling water pipes are arranged corresponding to each of the three-dimensional reticular cooling modules.

[0012] A direct contact condenser provided by the present invention, wherein a steam inlet is provided on the upper end face of the housing, and the mesh sizes of the plurality of three-dimensional reticular cooling modules are gradually changed;

[0013] From the upper end to the lower end of the housing, the mesh sizes of each of the three-dimensional reticular cooling modules are gradually decreased, and from the two sides to the middle of the housing, the mesh sizes of each of the three-dimensional reticular cooling modules are gradually decreased.

[0014] A direct contact condenser provided by the present invention, from the upper end to the lower end of the three-dimensional reticular cooling module, the mesh size of the three-dimensional reticular cooling module is gradually decreased, and from the two sides to the middle of the three-dimensional reticular cooling module, the mesh size of the three-dimensional reticular cooling module is gradually decreased.

[0015] A direct contact condenser provided by the present invention, the mesh size of each of the three-dimensional reticular cooling modules is gradually changed.

[0016] A direct contact condenser provided by the present invention, wherein a plurality of cooling water pipes are included, and each of the cooling water pipes is arranged corresponding to each of the three-dimensional reticular cooling modules;

[0017] Each of the cooling water pipes includes a main water pipe and a plurality of water distribution pipes communicated with the main water pipe, and each of the water distribution pipes is arranged in sequence along the length direction of the corresponding three-dimensional reticular cooling module, and / or, each of the water distribution pipes is arranged in sequence along the width direction of the corresponding three-dimensional reticular cooling module.

[0018] A direct contact condenser provided by the present invention, a plurality of water outlet holes are formed on each of the water distribution pipes, and a plurality of connecting fibers are correspondingly extended near each of the water distribution pipes of each of the three-dimensional reticular cooling modules, and each of the connecting fibers is wrapped around the outer periphery of the corresponding water distribution pipe.

[0019] A direct contact condenser provided by the present invention, a buckle is provided on each of the water distribution pipes, and each of the buckles is buckled on the circumference of the corresponding water distribution pipe to fix the corresponding connecting fiber.

[0020] A direct contact condenser provided by the present invention, a plurality of metal meshes are provided on the inner wall surface of the installation cavity, and the peripheries of each of the three-dimensional reticular cooling modules are correspondingly connected with each of the metal meshes.

[0021] A direct contact condenser provided by the present invention, wherein a plurality of partition plates are arranged in the installation cavity, and each partition plate divides the installation cavity into a plurality of condensation chambers. One of the three-dimensional network cooling modules is arranged in each condensation chamber, and communication holes are arranged on each partition plate.

[0022] A direct contact condenser provided by the present invention, wherein each basic unit of the fiber structure is formed by twisting four hydrophilic fibers, and the four hydrophilic fibers are rotationally symmetric, so that the corresponding basic unit of the fiber structure is in a regular hexahedron shape.

[0023] A direct contact condenser provided by the present invention, wherein the temperature of the cooling medium in each cooling water pipe is gradually decreased from the upper end face to the lower end face of the shell.

[0024] For the direct contact condenser provided by the present invention, the cooling medium is distributed through the cooling water pipes and flows into the three-dimensional network cooling module composed of hydrophilic fibers. The cooling medium is spread on the three-dimensional network cooling module, and the steam flowing into the three-dimensional network cooling module can meet and condense with the cooling medium. By using the combination of the cooling water pipes and the three-dimensional network cooling module, the spreading of the liquid film can be promoted by gravity and fiber capillary force, and the requirements for the flow rate and pressure of the cooling medium are relatively low; the three-dimensional network cooling module has a low cost and a light weight, and the three-dimensional network structure can be processed and formed by means such as weaving, and the process difficulty is relatively low; the areal density of the three-dimensional network cooling module is negatively correlated with the structural unit size of the direct contact condenser. For fibers with a relatively small diameter, excessive cooling medium is likely to drop off in a droplet shape, which is beneficial to maintaining the heat transfer areal density and reducing the volume of the direct contact condenser. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 It is a schematic cross-sectional view of a direct contact condenser according to an embodiment of the present invention;

[0027] Figure 2 It is a schematic longitudinal sectional view of a direct contact condenser according to an embodiment of the present invention;

[0028] Figure 3 is Figure 1 a schematic structural view of the middle water distribution pipe;

[0029] Figure 4 is Figure 1Schematic three-dimensional structure diagram of the first embodiment of the three-dimensional network cooling module;

[0030] Figure 5 is Figure 4 Schematic top view structure diagram;

[0031] Figure 6 is Figure 4 Schematic side view structure diagram;

[0032] Figure 7 is Figure 4 Schematic front view structure diagram;

[0033] Figure 8 is Figure 1 Schematic diagram of the mesh holes of the second embodiment of the three-dimensional network cooling module;

[0034] Figure 9 is Figure 4 Schematic three-dimensional structure diagram of the basic unit of the fiber structure

[0035] Figure 10 is Figure 9 Schematic front view structure diagram;

[0036] Figure 11 is Figure 9 Schematic top view structure diagram.

[0037] Reference numerals: 1: direct contact condenser; 2: housing; 3: three-dimensional network cooling module; 4: water supply structure; 5: installation cavity; 6: steam inlet; 7: metal mesh; 8: partition; 9: basic unit of fiber structure; 10: cooling water pipe; 11: mesh hole; 12: main water pipe; 13: water distribution pipe; 14: water outlet hole; 15: buckle; 16: condensate water tank. Detailed implementation manners

[0038] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts fall within the protection scope of the present invention.

[0039] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the embodiments of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0040] In the description of the embodiments of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific situations.

[0041] In the embodiments of the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over", and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below", and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0042] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0043] The following will be combined with Figures 1-11 describe the direct contact condenser 1 of the present invention.

[0044] In the prior art, the condenser has a large volume and a low condensation efficiency. In view of this, the present invention provides a direct contact condenser 1, comprising: a housing 2, within which there is an installation cavity 5; a three-dimensional mesh cooling module 3 disposed in the installation cavity 5, the three-dimensional mesh cooling module 3 including a plurality of basic fiber structure units 9 connected to each other, with mesh holes 11 formed between the respective basic fiber structure units 9, and each basic fiber structure unit 9 being formed by twisting a plurality of hydrophilic fibers; and a water supply structure 4, including a cooling water pipe 10 corresponding to the three-dimensional mesh cooling module 3, the cooling water pipe 10 being used to convey a cooling medium to the three-dimensional mesh cooling module 3. In this embodiment, the cooling medium is set as cooling water.

[0045] It should be noted that one cooling water pipe 10 can correspond to one three-dimensional mesh cooling module 3, or multiple cooling water pipes 10 can correspond to one three-dimensional mesh cooling module 3, and the present invention does not limit this. In the direct contact condenser 1 provided by the present invention, the cooling water is distributed through the cooling water pipe 10 and flows into the three-dimensional mesh cooling module 3 composed of hydrophilic fibers. The cooling water is spread on the three-dimensional mesh cooling module 3, and when the steam flows into the three-dimensional mesh cooling module 3, it can meet the cooling water and condense. By using the form of combining the cooling water pipe 10 with the three-dimensional mesh cooling module 3, the spreading of the cooling water liquid film can be promoted by means of gravity and fiber capillary force, and the requirements for the flow rate and pressure of the cooling water are relatively low; the three-dimensional mesh cooling module 3 has a low cost and a light weight, and the three-dimensional mesh structure can be processed and formed by means such as weaving, and the process difficulty is relatively low; the areal density of the three-dimensional mesh cooling module 3 is negatively correlated with the structural unit size of the direct contact condenser 1. For fibers with a relatively small diameter, excessive condensed water is likely to drop in a droplet shape, which is beneficial to maintaining the heat transfer areal density and reducing the volume of the direct contact condenser 1.

[0046] Specifically, in the technical solution provided by the present invention, there are a plurality of three-dimensional mesh cooling modules 3. Using more three-dimensional mesh cooling modules 3 is beneficial to further improving the condensation efficiency of the direct contact condenser 1. Of course, the specific quantity needs to be determined according to the working conditions of the direct contact condenser 1, and the present invention does not limit this. In this embodiment, the respective three-dimensional mesh cooling modules 3 are stacked along the height direction of the housing 2, and the multiple three-dimensional mesh cooling modules 3 of each layer are arranged in sequence along the width direction of the housing 2. Each three-dimensional mesh cooling module 3 extends along the length direction of the housing 2, and the cooling water pipe 10 is correspondingly arranged with the three-dimensional mesh cooling module 3.

[0047] In this embodiment, a steam inlet 6 is provided on the upper end face of the housing 2. To further improve the cooling effect, the sizes of the mesh holes 11 of different three-dimensional mesh cooling modules 3 are set to be gradually changed; specifically, from the upper end to the lower end of the housing 2, the sizes of the mesh holes 11 of each three-dimensional mesh cooling module 3 are set to gradually decrease, and from both sides to the middle of the housing 2, the sizes of the mesh holes 11 of each three-dimensional mesh cooling module 3 are set to gradually decrease. It should be noted that the steam flows through the mesh holes 11 of the three-dimensional mesh cooling module 3. By changing the size of the mesh holes 11, the flow of the steam can be maximally uniform, ensuring the heat transfer effect.

[0048] Each three-dimensional mesh cooling module 3 is equivalent to an independent cooling unit. To further improve the cooling effect of each cooling unit, from the upper end to the lower end of the three-dimensional mesh cooling module 3, the size of the mesh hole 11 of the three-dimensional mesh cooling module 3 is set to gradually decrease, and from both sides to the middle of the three-dimensional mesh cooling module 3, the size of the mesh hole 11 of the three-dimensional mesh cooling module 3 is set to gradually decrease. This can also further optimize the flow of the steam and improve the cooling effect. It should be noted that in this embodiment, the steam enters the installation cavity 5 from the upper end face of the housing 2, and the flow direction of the steam is from top to bottom. Therefore, the variation law of the size of the mesh hole 11 is set corresponding to the flow direction of the steam; if in other embodiments, the flow direction of the steam is not from top to bottom, then the variation law of the size of the mesh hole 11 needs to be set according to the flow direction of the steam. Specifically, along the flow direction of the steam, the size of the mesh hole 11 is sequentially decreased, and perpendicular to the flow direction of the steam, the size of the mesh hole 11 gradually decreases from both sides to the middle. In addition, it should be noted that please refer to Figures 4-8 , for each three-dimensional mesh cooling module 3, the size of the mesh hole 11 inside it can be uniformly set, so the manufacturing process is relatively simple; of course, the size of the mesh hole 11 of each three-dimensional mesh cooling module 3 can also be designed in a gradually changing form, so that the heat exchange performance of the three-dimensional mesh cooling module 3 can be more significantly improved. In Figure 8 , a form of the change in the size of the mesh hole 11 is proposed, that is, the size of the mesh hole 11 gradually decreases from top to bottom. Of course, the size of the mesh hole 11 can also gradually decrease from left to right, or the size of the mesh hole 11 changes uniformly from top to bottom and from left to right. The present invention does not limit this.

[0049] Further, in the technical solution provided by the present invention, there are multiple cooling water pipes 10, and each cooling water pipe 10 is correspondingly arranged with each three-dimensional network cooling module 3; each cooling water pipe 10 includes a main water pipe 12 and a plurality of water distribution pipes 13 communicated with the main water pipe 12. It should be noted that the water distribution pipe 13 can be communicated with the main water pipe 12 through a pipeline, or the water distribution pipe 13 can be directly arranged on the main water pipe 12, and the present invention does not limit this. The water distribution pipes 13 are arranged in sequence along the length direction of the corresponding three-dimensional network cooling module 3, or the water distribution pipes 13 are arranged in sequence along the width direction of the corresponding three-dimensional network cooling module 3, so that the cooling water can be evenly distributed on the three-dimensional network cooling module 3. Reference can be made to Figure 1 , in this embodiment, the main water pipes 12 are correspondingly arranged in multiple layers along the height direction of the housing 2, and the main water pipes 12 of each layer are arranged in sequence along the width direction of the housing 2. Each main water pipe 12 extends along the length direction of the housing 2, and a plurality of water distribution pipes 13 are sequentially arranged in its extending direction for distributing cooling water to the corresponding three-dimensional network cooling module 3.

[0050] Generally, the water distribution pipe 13 can directly open an opening to allow the cooling water to flow out from the opening and infiltrate into the three-dimensional network cooling module 3. However, in this way, the uneven distribution of the cooling water may occur. In the technical solution provided by the present invention, a plurality of water outlet holes 14 are opened on each water distribution pipe 13, and the cooling water flows out through the water outlet holes 14; a plurality of connecting fibers are correspondingly extended near each water distribution pipe 13 of the three-dimensional network cooling module 3, and each connecting fiber is wrapped around the outer periphery of the corresponding water distribution pipe 13. With such a setting, on the one hand, the cooling water can use the connecting fiber as a guiding member to gradually spread downward and infiltrate the entire three-dimensional network cooling module 3, and on the other hand, the connecting fiber is connected to the water distribution pipe 13, which can also improve the structural stability of the three-dimensional network cooling module 3. It should be noted that the material of the connecting fiber is the same as that of each fiber structure basic unit 9. It can be the single-fiber extension combination of a plurality of fiber structure basic units 9 to form a connecting fiber. The connecting fiber can be directly wound around the outer periphery of the water distribution pipe 13 and fixed by tying a knot by itself, or can be fixed by other components. For example, in this embodiment, a buckle 15 is provided on the water distribution pipe 13, and the buckle 15 is buckled on the circumference of the corresponding water distribution pipe 13 to fix the corresponding connecting fiber. Of course, it can also be fixed by a wire or other fixing structures, and the present invention does not limit this.

[0051] Since the three-dimensional network cooling module 3 is woven from hydrophilic fibers and the structure of the hydrophilic fibers is relatively soft, a certain tensile force needs to be applied to the three-dimensional network cooling module 3 to open the mesh holes 11 of the three-dimensional network cooling module 3. In the technical solution provided by the present invention, a plurality of metal meshes 7 are provided on the inner wall surface of the installation cavity 5, and the periphery of the three-dimensional network cooling module 3 is correspondingly connected to each metal mesh 7, so that the three-dimensional network cooling module 3 has a stable shape. It should be noted that the three-dimensional network cooling module 3 can be connected to the metal mesh by setting connecting fibers or fixed by iron wires, and the present invention does not limit this.

[0052] Furthermore, a plurality of partition plates 8 are provided in the installation cavity 5, and each partition plate 8 divides the installation cavity 5 into a plurality of condensation chambers. A three-dimensional network cooling module 3 is provided in each condensation chamber, and communication holes are provided on each partition plate 8. On the one hand, the partition plates 8 play a supporting role for each three-dimensional network cooling module 3, and on the other hand, they also play an effect of isolating the flow of steam between different three-dimensional network cooling modules in the horizontal and vertical directions, which is beneficial to avoiding the over-concentration of steam and enabling each three-dimensional network cooling module 3 to achieve a good cooling effect.

[0053] Specifically, each fiber structure basic unit 9 is formed by twisting four hydrophilic fibers, and the four hydrophilic fibers are rotationally symmetric so that the corresponding fiber structure basic unit 9 is in a regular hexahedron shape. Please refer to Figures 9-11 , the basic structural unit of the fiber structure basic unit 9 is a three-dimensional regular hexahedron. In order to facilitate the flow of cooling water and condensed water, the horizontal structural lines in the three-dimensional regular hexahedron are not used, and the vertical lines are further ignored to facilitate the uniform stress of the whole fiber. The fiber structure basic unit 9 can be obtained by winding four hydrophilic fibers, and these 4 hydrophilic fibers are rotationally symmetric in structure. The fiber structure basic unit 9 is made of hydrophilic and durable fibers (such as improved and strengthened cotton fibers, cotton blended fibers, etc.). The three-dimensional network cooling module can be processed in the same way as fishing nets or weaving, knitting sweaters, or can also be processed by 3D printing. The process is relatively simple and the production cost is relatively low.

[0054] Furthermore, since the temperature of the steam gradually decreases from top to bottom, the temperature of the cooling water in each cooling water pipe 10 is set to gradually decrease from the upper end surface to the lower end surface of the housing 2 to improve the cooling effect. Of course, according to the operating conditions of the equipment, cooling water with different pressures and flows can be supplied to the cooling water pipes 10 at different heights to optimize the contact condensation process of the steam in the direct contact condenser 1 and achieve the strengthening of heat transfer and mass transfer.

[0055] Even further, condensed water is generated when the steam flows from top to bottom. A condensate water tank 16 is also provided below the housing 2. The condensate water tank 16 is communicated with the installation cavity 5 and is used to recover the condensate water generated by the condensation of the steam for further recycling.

[0056] For the direct contact condenser 1 provided by the present invention, calculated with a fiber diameter of 0.2 mm, a unit structure size of 1 mm, and a hexahedron-centered structure, the heat transfer surface density of the three-dimensional network cooling module 3 can reach 4000 m 2 / m 3 , far exceeding the performance range of the shell-and-tube heat exchanger.

[0057] 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 foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A direct contact condenser, characterized in that, Comprising: A housing, within which an installation cavity is provided; A three-dimensional reticular cooling module, disposed within the installation cavity, the three-dimensional reticular cooling module comprising a plurality of basic fiber structure units connected to each other, with mesh holes formed between each of the basic fiber structure units, and each of the basic fiber structure units being formed by twisting a plurality of hydrophilic fibers; there are a plurality of the three-dimensional reticular cooling modules; and, A water supply structure, comprising cooling water pipes corresponding to the three-dimensional reticular cooling modules, the cooling water pipes being used to convey a cooling medium to the three-dimensional reticular cooling modules; Wherein, a steam inlet is provided on the upper end face of the housing, and the mesh hole sizes of the plurality of three-dimensional reticular cooling modules are arranged in a gradual change; along the steam flow direction, the mesh hole sizes are arranged to gradually decrease, and perpendicular to the steam flow direction, the mesh hole sizes gradually decrease from both sides to the middle.

2. The direct contact condenser according to claim 1, wherein From the upper end to the lower end of the housing, the mesh hole sizes of each of the three-dimensional reticular cooling modules are arranged to gradually decrease, and from both sides to the middle of the housing, the mesh hole sizes of each of the three-dimensional reticular cooling modules are arranged to gradually decrease.

3. The direct contact condenser according to claim 2, wherein From the upper end to the lower end of the three-dimensional reticular cooling module, the mesh hole sizes of each of the three-dimensional reticular cooling modules are arranged to gradually decrease, and from both sides to the middle of the three-dimensional reticular cooling module, the mesh hole sizes of each of the three-dimensional reticular cooling modules are arranged to gradually decrease.

4. The direct contact condenser according to claim 3, wherein The mesh hole size of each of the three-dimensional reticular cooling modules is arranged in a gradual change.

5. The direct contact condenser according to claim 1, characterized in that, There are a plurality of the cooling water pipes, and each of the cooling water pipes corresponds to one of the three-dimensional reticular cooling modules; Each of the cooling water pipes comprises a main water pipe and a plurality of water distribution pipes communicated with the main water pipe, and the water distribution pipes are arranged in sequence along the length direction of the corresponding three-dimensional reticular cooling module, and / or, the water distribution pipes are arranged in sequence along the width direction of the corresponding three-dimensional reticular cooling module.

6. The direct contact condenser according to claim 5, wherein, A plurality of water outlet holes are formed on each of the water distribution pipes, and a plurality of connecting fibers are correspondingly extended near each of the water distribution pipes of each of the three-dimensional reticular cooling modules, and each of the connecting fibers is wrapped around the outer periphery of the corresponding water distribution pipe.

7. The direct contact condenser according to claim 6, characterized in that, Clasps are provided on each of the water distribution pipes, and each of the clasps is buckled on the circumference of the corresponding water distribution pipe to fix the corresponding connecting fiber.

8. The direct contact condenser according to claim 1, wherein, A plurality of metal meshes are provided on the inner wall surface of the installation cavity, and the peripheries of each of the three-dimensional reticular cooling modules are correspondingly connected to each of the metal meshes.

9. The direct contact condenser according to claim 1, wherein A plurality of partition plates are provided within the installation cavity, and each of the partition plates divides the installation cavity into a plurality of condensation chambers, and one of the three-dimensional reticular cooling modules is provided in each of the condensation chambers, and communication holes are provided on each of the partition plates.

10. The direct contact condenser according to claim 1, wherein, Each of the basic fiber structure units is formed by twisting four hydrophilic fibers, and the four hydrophilic fibers are rotationally symmetric, so that the corresponding basic fiber structure unit is in a regular hexahedron shape.

11. The direct-contact condenser according to claim 1, wherein, From the upper end face to the lower end face of the housing, the temperatures of the cooling medium in each of the cooling water pipes are arranged to gradually decrease.

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