Three-tube coaxial condensing device

Abstract

The utility model discloses a three pipe coaxial condensing device, including heat exchange water tank and water pump, and the input of water pump is linked with the output of heat exchange water tank, still include spiral condensing pipe and three axle condensing pipe, and spiral condensing pipe includes first cooling water flow channel and condensing flow channel, and the output of condensing flow channel is equipped with condensate output, three axle condensing pipe includes second cooling water flow channel, steam flow channel and third cooling water flow channel, and the input of second cooling water flow channel and the output of first cooling water flow channel are linked with through pipeline, and the output of steam flow channel and the input of condensing flow channel are linked with through pipeline, and the input of steam flow channel is equipped with steam input, and the input of third cooling water flow channel and the output of first cooling water flow channel are linked with through pipeline, and the input of heat exchange water tank is linked with the output of second cooling water flow channel and third cooling water flow channel respectively. The utility model can realize the full liquefaction of steam, improve steam condensing efficiency, improve the heat energy recycling rate simultaneously.

Description

Technical Field

[0001] This utility model relates to a condensation device, specifically a three-tube coaxial condensation device, belonging to the technical field of heat exchange and steam treatment equipment. Background Technology

[0002] In the field of heat exchange and steam treatment equipment technology, condensing units, as core equipment for realizing steam liquefaction, heat recovery, and media separation, are widely used in various industries such as chemical production, food processing, HVAC (heating, ventilation, and air conditioning), and pharmaceuticals. Whether it is the recovery of solvent vapors in chemical processes, the condensation and cooling of steam after food sterilization, or the recovery and utilization of waste heat in industrial production, the efficiency of condensing units directly determines the energy consumption level, product quality, and environmental protection indicators of the production process. Its technical performance has a key impact on the economy and stability of the entire production system. However, most mainstream condensing units on the market today still use single-tube or double-tube coaxial structures. These structures have inherent design flaws that make it difficult to meet the high-efficiency condensation requirements under high steam volume and high humidity conditions. Specifically, these shortcomings are as follows: First, the heat exchange contact area is limited. A single-tube structure only has a single steam flow channel and a cooling water flow channel. The cooling water and steam can only exchange heat through a single sidewall, and the contact area is limited by the pipe's inner diameter and length, resulting in a low upper limit for the heat that can be transferred per unit time. Even with the addition of an annular flow channel in a double-tube coaxial structure, the flow channel layout remains relatively simple. The contact interface between steam and cooling water does not form a three-dimensional coverage, limiting the improvement in heat exchange efficiency and failing to fully utilize the internal space of the pipe for efficient heat exchange. Second, the steam residence time is insufficient. Existing structures often use straight-cylinder or simple annular designs for the flow channels. The steam flow path within the channels is short and the flow velocity is high, easily forming a "short-circuit flow"—some steam does not fully exchange heat with the cooling water before being directly discharged from the flow channel output end. Especially when handling high-humidity, high-flow-rate steam, incomplete steam condensation is likely to occur, which not only wastes the target medium (such as solvent vapor) but also increases the load on subsequent exhaust gas treatment and may even lead to the risk of exceeding environmental emission standards. Thirdly, the heat recovery efficiency is low. Due to incomplete condensation, a large amount of latent heat contained in the steam cannot be fully absorbed by the cooling water, and some heat is lost with the uncondensed steam. Utility Model Content

[0003] The purpose of this invention is to provide a three-tube coaxial condenser. This invention can achieve complete liquefaction of steam, improve steam condensation efficiency, and enhance heat energy recovery and utilization rate.

[0004] The technical solution of this utility model is as follows: a three-tube coaxial condensing device, including a hot water tank and a water pump, wherein the input end of the water pump is connected to the output end of the hot water tank; it also includes a spiral condensing tube and a three-axis condensing tube; The spiral condenser tube is internally fitted with a cooling tube, and a first cooling water flow channel is formed between the spiral condenser tube and the cooling tube. The inlet end of the first cooling water flow channel and the outlet end of the water pump are connected by a pipeline. The cooling tube is internally fitted with a condensation flow channel, and the outlet end of the condensation flow channel is provided with a condensate outlet. The triaxial condenser tube includes an outer tube, a middle tube, and an inner tube arranged coaxially. A second cooling water flow channel is formed between the outer tube and the middle tube. The input end of the second cooling water flow channel and the output end of the first cooling water flow channel are connected by a pipeline. A steam flow channel is formed between the middle tube and the inner tube. The output end of the steam flow channel and the input end of the condenser flow channel are connected by a pipeline. The input end of the steam flow channel is provided with a steam inlet. A third cooling water flow channel is formed inside the inner tube. The input end of the third cooling water flow channel and the output end of the first cooling water flow channel are connected by a pipeline. The input end of the heat exchange tank is connected to the output ends of the second cooling water flow channel and the third cooling water flow channel, respectively.

[0005] In the aforementioned three-tube coaxial condenser, the lower end of the spiral condenser tube is provided with a first cooling water inlet connected to the first cooling water channel, and the upper end of the spiral condenser tube is provided with a first cooling water outlet connected to the first cooling water channel; one end of the outer tube is provided with a second cooling water inlet connected to the second cooling water channel, and the other end of the outer tube is provided with a second cooling water outlet connected to the second cooling water channel; one end of the inner tube is provided with a third cooling water inlet connected to the third cooling water channel, and the other end of the inner tube is provided with a third cooling water outlet connected to the third cooling water channel; the first cooling water inlet is connected to the output end of the water pump via a pipeline, the first cooling water outlet is connected to the second cooling water inlet and the third cooling water inlet via pipelines respectively, and the second cooling water outlet and the third cooling water outlet are connected to the input end of the heat exchange tank via pipelines.

[0006] In the aforementioned three-tube coaxial condenser, the output end of the middle tube is provided with a steam outlet communicating with the steam flow channel, and the upper end of the cooling tube is provided with a condensate inlet communicating with the condensation flow channel. The condensate inlet and the steam outlet are connected by a pipeline.

[0007] In the aforementioned three-tube coaxial condensing device, the condensing device also includes a frame, which is divided into a fixing layer, a support layer and an installation layer from top to bottom; the fixing layer is provided with multiple sets of hanging rods, and the lower end of the hanging rods is provided with a first fixing component for fixing the three-axis condensing tubes; the support layer is provided with a bracket for fixing the spiral condensing tubes and multiple through holes; the installation layer is provided with a collection tank located below the condensate outlet, and the hot water tank and water pump are installed on the installation layer.

[0008] In the aforementioned three-tube coaxial condenser, the first fixing member includes a first upper fixing member, one end of which is hinged to a first lower fixing member. A first fixing space for accommodating the triaxial condenser tube is formed between the first upper fixing member and the first lower fixing member. The first fixing space is adapted to the shape of the triaxial condenser tube. An opening is formed at the other end of the first upper fixing member and the first lower fixing member. The other end of the first upper fixing member has a first threaded hole, and the other end of the first lower fixing member has a second threaded hole that mates with the first threaded hole. A first fixing bolt is connected between the first threaded hole and the second threaded hole.

[0009] In the aforementioned three-tube coaxial condenser, the bracket includes a base connected to the support layer, a support column is provided at the upper end of the base, multiple sets of crossbars are provided on the side of the support column, and a second fixing component for fixing the spiral condenser tube is provided at the end of the crossbar.

[0010] In the aforementioned three-tube coaxial condenser, the second fixing member includes a second upper fixing member, one end of which is hinged to a second lower fixing member, and a second fixing space for accommodating the spiral condenser tube is formed between the second upper fixing member and the second lower fixing member. The second fixing space is adapted to the shape of the spiral condenser tube. An opening is formed at the other end of the second upper fixing member and the second lower fixing member. The other end of the second upper fixing member has a third threaded hole, and the other end of the second lower fixing member has a fourth threaded hole that mates with the third threaded hole. A second fixing bolt is connected between the third threaded hole and the fourth threaded hole.

[0011] In the aforementioned three-tube coaxial condenser, the through holes include multiple first through holes for the cooling water pipeline and a second through hole located between the condensate outlet and the collection tank.

[0012] In the aforementioned three-tube coaxial condenser, rollers are respectively installed at the four corners of the bottom of the frame.

[0013] Compared with the prior art, the present invention has the following beneficial effects: This invention utilizes a combination of triaxial and spiral condenser tubes. The outer, middle, and inner tubes of the triaxial condenser tube are coaxially arranged, allowing for simultaneous heat exchange from both the inner and outer sides of the steam flow channel through a second cooling water channel between the outer and middle tubes and a third cooling water channel inside the inner tube. The heat exchange interface is expanded from a traditional single sidewall to a double-layered annular interface, efficiently handling the condensation requirements of high humidity and high flow rates of steam. The spiral structure of the spiral condenser tube significantly extends the cooling water flow path compared to traditional straight tubes. Simultaneously, the internal cooling pipes allow for a circumferential heat exchange of the medium within the cooling pipes through the first cooling water channel between the spiral condenser tube and the cooling pipes. Furthermore, the invention's frame structure, divided from top to bottom into a fixed layer, a support layer, an installation layer, and a fixing structure, balances structural stability with ease of use, facilitating easy assembly and disassembly and effectively reducing maintenance costs. Attached Figure Description

[0014] Figure 1 This is the front view of this utility model; Figure 2 This is a schematic diagram of the spiral condenser tube of this utility model; Figure 3 This is a schematic diagram of the triaxial condenser tube of this utility model; Figure 4 This is a schematic diagram of the lifting rod and the first fixing component of this utility model; Figure 5 This is a schematic diagram of the bracket of this utility model.

[0015] The labels in the attached diagram are as follows: 1. Spiral condenser tube; 101. First cooling water channel; 102. First cooling water inlet; 103. First cooling water outlet; 2. Triaxial condenser tube; 201. Second cooling water channel; 202. Steam channel; 203. Third cooling water channel; 3. Cooling pipe; 301. Condensate channel; 302. Condensate outlet; 303. Condensate inlet; 4. Outer pipe; 401. Second cooling water inlet; 402. Second cooling water outlet; 5. Middle pipe; 501. Steam inlet; 502. Steam outlet; 6. Inner pipe; 601. Third cooling water inlet; 60 2. Third cooling water outlet; 7. Hot water tank; 8. Water pump; 9. Frame; 901. Fixing layer; 902. Supporting layer; 903. Mounting layer; 10. Collection tank; 11. Hanging rod; 12. First fixing component; 1201. First upper fixing component; 1202. First lower fixing component; 1203. First fixing bolt; 13. Bracket; 1301. Base; 1302. Support column; 1303. Crossbar; 14. Second fixing component; 1401. Second upper fixing component; 1402. Second lower fixing component; 1403. Second fixing bolt; 15. First through hole; 16. Second through hole; 17. Roller. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0017] Example: A three-tube coaxial condenser, configured as follows Figure 1As shown, the system includes a heat exchange tank 7, a water pump 8, a spiral condenser tube 1, and a triaxial condenser tube 2. The input end of the water pump 8 is connected to the output end of the heat exchange tank 7 to extract cooling water. The heat exchange tank 7 has a built-in brazed plate heat exchanger to store cooling water and recover heat from the cooled water after heat exchange (to regulate water temperature), providing a stable water source for the entire cooling water circulation system. The water pump 8, as the power source for the cooling water circulation, is a 304 stainless steel self-priming booster pump (model JET250G2). It draws cooling water from the heat exchange tank 7 through pipelines and delivers it to the first cooling water flow channel 101 of the spiral condenser tube 1, driving the cooling water to flow in each channel. Both the brazed plate heat exchanger and the water pump 8 are commercially available. A cooling pipe 3 is inserted inside the spiral condenser tube 1, and the two are arranged coaxially. A closed first cooling water channel 101 is naturally formed between the inner wall of the spiral condenser tube 1 and the outer wall of the cooling pipe 3. The inlet end of the first cooling water channel 101 and the outlet end of the water pump 8 are connected via a pipeline. A condensation channel 301 is formed inside the cooling pipe 3, and a condensate outlet 302 is provided at the outlet end of the condensation channel 301. Figure 2 As shown, the spiral condenser tube 1 and the internally inserted cooling tube 3 form a first cooling water flow channel 101. The spiral structure extends the cooling water flow path and increases the heat exchange time. The medium (incompletely condensed steam) in the cooling tube 3 is subjected to a surrounding heat exchange through the first cooling water flow channel 101, which enhances the secondary cooling effect.

[0018] like Figure 3 As shown, the triaxial condenser tube 2 includes an outer tube 4, a middle tube 5, and an inner tube 6 arranged coaxially. A second cooling water flow channel 201 is formed between the outer tube 4 and the middle tube 5. The input end of the second cooling water flow channel 201 and the output end of the first cooling water flow channel 101 are connected by a pipeline. A steam flow channel 202 is formed between the middle tube 5 and the inner tube 6. The output end of the steam flow channel 202 and the input end of the condenser flow channel 301 are connected by a pipeline. The input end of the steam flow channel 202 is provided with a steam inlet 501. A third cooling water flow channel 203 is formed inside the inner tube 6. The input end of the third cooling water flow channel 203 and the output end of the first cooling water flow channel 101 are connected by a pipeline. The input end of the heat exchange tank 7 is connected to the output ends of the second cooling water flow channel 201 and the third cooling water flow channel 203, respectively. The third cooling water channel 203 formed inside the triaxial condenser tube 2 delivers cooling water from the inside of the steam channel 202, forming an inner and outer enveloping heat exchange with the second cooling water channel 201, which greatly improves the steam condensation efficiency.

[0019] Furthermore, the lower end of the spiral condenser tube 1 is provided with a first cooling water inlet 102 connected to the first cooling water flow channel 101, and the upper end of the spiral condenser tube 1 is provided with a first cooling water outlet 103 connected to the first cooling water flow channel 101; one end of the outer tube 4 is provided with a second cooling water inlet 401 connected to the second cooling water flow channel 201, and the other end of the outer tube 4 is provided with a second cooling water outlet 402 connected to the second cooling water flow channel 201; one end of the inner tube 6 is provided with a third cooling water inlet 601 connected to the third cooling water flow channel 203, and the other end of the inner tube 6 is provided with a third cooling water outlet 602 connected to the third cooling water flow channel 203; the first cooling water inlet 102 is connected to the output end of the water pump 8 via a pipeline, the first cooling water outlet 103 is connected to the second cooling water inlet 401 and the third cooling water inlet 601 via pipelines respectively, and the second cooling water outlet 402 and the third cooling water outlet 602 are connected to the input end of the hot water exchange tank 7 via pipelines. The output end of the middle pipe 5 is provided with a steam outlet 502 that is connected to the steam flow channel 202. The upper end of the cooling pipe 3 is provided with a condensate inlet 303 that is connected to the condensation flow channel 301. The condensate inlet 303 and the steam outlet 502 are connected through a pipeline so that the steam that is not completely condensed can enter the condensation flow channel 301 for secondary cooling.

[0020] The condensation unit also includes a frame 9, which is divided into a fixing layer 901, a support layer 902, and a mounting layer 903 from top to bottom. The fixing layer 901 is equipped with multiple sets of hangers 11, such as... Figure 4 As shown, the lower end of the hanger 11 is provided with a first fixing member 12 for fixing the triaxial condenser tube 2. The first fixing member 12 includes a first upper fixing member 1201, one end of which is hinged to a first lower fixing member 1202. A first fixing space for accommodating the triaxial condenser tube 2 is formed between the first upper fixing member 1201 and the first lower fixing member 1202. The first fixing space is adapted to the shape of the triaxial condenser tube 2. The other ends of the first upper fixing member 1201 and the first lower fixing member 1202 have openings. The other end of the first upper fixing member 1201 has a first threaded hole, and the other end of the first lower fixing member 1202 has a second threaded hole that mates with the first threaded hole. A first fixing bolt 1203 is connected between the first threaded hole and the second threaded hole. By inserting the first fixing bolt 1203 into the first threaded hole and tightening it, the triaxial condenser tube 2 is firmly fixed. During disassembly, the tube can be removed simply by loosening the bolt. The support layer 902 is provided with a bracket 13 for fixing the spiral condenser tube 1 and multiple through holes. like Figure 5As shown, the bracket 13 includes a base 1301 connected to the support layer 902. A support column 1302 is provided at the upper end of the base 1301. Multiple sets of crossbars 1303 are provided on the side of the support column 1302. A second fixing member 14 for fixing the spiral condenser tube 1 is provided at the end of each crossbar 1303. The second fixing member 14 includes a second upper fixing member 1401, one end of which is hinged to a second lower fixing member 1402. A second fixing space for accommodating the spiral condenser tube 1 is formed between the second upper fixing member 1401 and the second lower fixing member 1402. The second fixing space is adapted to the shape of the spiral condenser tube 1. An opening is formed at the other end of the second upper fixing member 1401 and the second lower fixing member 1402. The other end of the second upper fixing member 1401 has a third threaded hole, and the other end of the second lower fixing member 1402 has a fourth threaded hole that mates with the third threaded hole. A second fixing bolt 1403 is connected between the third threaded hole and the fourth threaded hole. The spiral condenser tube 1 is fixed by the second fixing bolt 1403 passing through the third threaded hole and the fourth threaded hole, which facilitates the disassembly, assembly, and position adjustment of the spiral condenser tube 1. The through holes include multiple first through holes 15 and second through holes 16. The connecting pipes between the components pass through the first through holes 15 to avoid pipe clutter. The second through hole 16 is located between the condensate outlet 302 of the cooling pipe 3 and the collection tank 10, ensuring that the medium discharged from the condensate outlet 302 can fall directly into the collection tank 10 through the second through hole 16. The collection tank 10 is located below the condensate outlet 302 on the mounting layer 903. The hot water tank 7 and the water pump 8 are installed on the mounting layer 903. Rollers 17 are respectively provided at the four corners of the bottom of the frame 9.

[0021] Work process When water pump 8 is started, cooling water in the heat exchange tank 7 is drawn by water pump 8 and transported through pipeline to the first cooling water inlet 102 of the spiral condenser tube 1, entering the first cooling water flow channel 101. The cooling water flows in the spiral structure of the spiral condenser tube 1 (extending the flow path and initially increasing the heat exchange contact time), and finally flows out from the first cooling water outlet 103. The cooling water flowing out from the first cooling water outlet 103 is divided into two paths through the pipeline. One path enters the second cooling water inlet 401 of the triaxial condenser tube 2 (flowing into the second cooling water flow channel 201), and the other path enters the third cooling water inlet 601 (flowing into the third cooling water flow channel 203). The two cooling water paths flow in the second cooling water flow channel 201 (between the outer tube 4 and the middle tube 5) and the third cooling water flow channel 203 (inside the inner tube 6), respectively.

[0022] The steam to be condensed is introduced into the steam inlet 501 of the triaxial condenser tube 2 through the pipeline, and enters the steam flow channel 202 between the middle tube 5 and the inner tube 6. When the steam flows in the steam flow channel 202, it exchanges heat with the cooling water of the outer second cooling water flow channel 201 and the inner third cooling water flow channel 203 at the same time, and most of the steam is liquefied in this process. The steam that is not completely liquefied continues to flow to the steam outlet 502, enters the condensate inlet 303 of the cooling tube 3 through the pipeline, flows into the condensation flow channel 301, and exchanges heat again with the cooling water of the outer first cooling water flow channel 101 of the condensation flow channel 301, and finally becomes completely liquefied.

[0023] The completely liquefied medium in the condensation channel 301 is discharged from the condensate outlet 302 and falls into the collection tank 10 of the mounting layer 903 through the second through hole 16 of the support layer 902, thus completing the condensation and recovery of steam. The cooling water that has completed heat exchange in the second cooling water channel 201 and the third cooling water channel 203 flows out from the second cooling water outlet 402 and the third cooling water outlet 602 respectively, and flows back to the heat exchange water tank 7 after converging through the pipeline, forming a closed loop circulation of cooling water, which can be reused for heat exchange.

[0024] In summary, this invention can achieve full liquefaction of steam, improve steam condensation efficiency, and enhance the heat energy recovery and utilization rate.

Claims

1. A three-tube coaxial condensing device, comprising a hot water exchange tank (7) and a water pump (8), wherein the input end of the water pump (8) is connected to the output end of the hot water exchange tank (7); characterized in that: It also includes a spiral condenser (1) and a triaxial condenser (2). The spiral condenser (1) has a cooling pipe (3) running through it. A first cooling water channel (101) is formed between the spiral condenser (1) and the cooling pipe (3). The input end of the first cooling water channel (101) and the output end of the water pump (8) are connected by a pipeline. A condensation channel (301) is formed inside the cooling pipe (3). The output end of the condensation channel (301) is provided with a condensate outlet (302). The triaxial condenser (2) includes an outer tube (4), a middle tube (5) and an inner tube (6) arranged coaxially. A second cooling water channel (201) is formed between the outer tube (4) and the middle tube (5). The input end of the heat exchange tank (7) and the output end of the first cooling water channel (101) are connected by a pipeline; a steam channel (202) is formed between the middle pipe (5) and the inner pipe (6), and the output end of the steam channel (202) and the input end of the condensation channel (301) are connected by a pipeline. The input end of the steam channel (202) is provided with a steam inlet (501); a third cooling water channel (203) is formed inside the inner pipe (6), and the input end of the third cooling water channel (203) and the output end of the first cooling water channel (101) are connected by a pipeline; the input end of the heat exchange tank (7) is connected to the output ends of the second cooling water channel (201) and the third cooling water channel (203) respectively.

2. The three-tube coaxial condenser according to claim 1, characterized in that: The lower end of the spiral condenser tube (1) is provided with a first cooling water inlet (102) communicating with the first cooling water channel (101), and the upper end of the spiral condenser tube (1) is provided with a first cooling water outlet (103) communicating with the first cooling water channel (101); one end of the outer tube (4) is provided with a second cooling water inlet (401) communicating with the second cooling water channel (201), and the other end of the outer tube (4) is provided with a second cooling water outlet (402) communicating with the second cooling water channel (201); one end of the inner tube (6) is provided with a third cooling water channel (203) The third cooling water inlet (601) is connected, and the other end of the inner tube (6) is provided with a third cooling water outlet (602) connected to the third cooling water flow channel (203); the first cooling water inlet (102) is connected to the output end of the water pump (8) through a pipeline, the first cooling water outlet (103) is connected to the second cooling water inlet (401) and the third cooling water inlet (601) through a pipeline respectively, and the second cooling water outlet (402) and the third cooling water outlet (602) are connected to the input end of the hot water exchange tank (7) through a pipeline.

3. The three-tube coaxial condenser according to claim 1, characterized in that: The output end of the middle pipe (5) is provided with a steam outlet (502) that communicates with the steam flow channel (202), and the upper end of the cooling pipe (3) is provided with a condensate inlet (303) that communicates with the condensate flow channel (301). The condensate inlet (303) and the steam outlet (502) are connected by a pipeline.

4. The three-tube coaxial condenser according to claim 1, characterized in that: The condensation device also includes a frame (9), which is divided into a fixed layer (901), a support layer (902) and an installation layer (903) from top to bottom. The fixed layer (901) is provided with multiple sets of hanging rods (11), and the lower end of the hanging rods (11) is provided with a first fixing member (12) for fixing the triaxial condenser tube (2). The support layer (902) is provided with a bracket (13) for fixing the spiral condenser tube (1) and multiple through holes. The installation layer (903) is provided with a collection bucket (10) located below the condensate outlet (302). The hot water tank (7) and the water pump (8) are installed on the installation layer (903).

5. The three-tube coaxial condenser according to claim 4, characterized in that: The first fixing member (12) includes a first upper fixing member (1201), one end of which is hinged to a first lower fixing member (1202). A first fixing space for accommodating the triaxial condenser tube (2) is formed between the first upper fixing member (1201) and the first lower fixing member (1202). The first fixing space is adapted to the shape of the triaxial condenser tube (2). An opening is formed at the other end of the first upper fixing member (1201) and the first lower fixing member (1202). The other end of the first upper fixing member (1201) has a first threaded hole, and the other end of the first lower fixing member (1202) has a second threaded hole that mates with the first threaded hole. A first fixing bolt (1203) is connected between the first threaded hole and the second threaded hole.

6. The three-tube coaxial condenser according to claim 4, characterized in that: The bracket (13) includes a base (1301) connected to the support layer (902). The upper end of the base (1301) is provided with a support column (1302). The side of the support column (1302) is provided with multiple sets of crossbars (1303). The end of the crossbar (1303) is provided with a second fixing member (14) for fixing the spiral condenser tube (1).

7. The three-tube coaxial condenser according to claim 6, characterized in that: The second fixing member (14) includes a second upper fixing member (1401), one end of which is hinged to a second lower fixing member (1402). A second fixing space for accommodating the spiral condenser tube (1) is formed between the second upper fixing member (1401) and the second lower fixing member (1402). The second fixing space is adapted to the shape of the spiral condenser tube (1). An opening is formed at the other end of the second upper fixing member (1401) and the second lower fixing member (1402). The other end of the second upper fixing member (1401) has a third threaded hole, and the other end of the second lower fixing member (1402) has a fourth threaded hole that mates with the third threaded hole. A second fixing bolt (1403) is connected between the third threaded hole and the fourth threaded hole.

8. The three-tube coaxial condenser according to claim 4, characterized in that: The through holes include multiple first through holes (15) for cooling water pipeline routing and a second through hole (16) located between the condensate outlet (302) and the collection tank (10).

9. The three-tube coaxial condenser according to claim 4, characterized in that: The frame (9) is equipped with rollers (17) at the four corners of its bottom.

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