Absorption type large-temperature-difference heat exchange unit

Abstract

The utility model provides an absorption type large-temperature-difference heat exchange unit, and belongs to the technical field of heat exchange machines. The absorption type large-temperature-difference heat exchange unit comprises a heat exchange machine and a filtering assembly. A primary water inlet pipe is arranged on one side of the heat exchanger, and a secondary water inlet pipe is arranged on the other side of the heat exchanger. The two sets of filter assemblies are arranged, each set of filter assembly comprises a filter screen plate, a connecting sleeve and a connecting pipe, the two connecting sleeves are arranged outside the primary water inlet pipe and the secondary water inlet pipe in a sliding and sleeving mode respectively, and when the device is used, the connecting sleeves are pulled in the direction away from the heat exchange machine, so that the connecting sleeves move in the direction away from the heat exchange machine; the filter screen plate can be detached by pulling the connecting sleeve, so that the filter screen plate is exposed, the filter screen plate can be detached, the filter screen plate can be cleaned, the filter screen plate can be detached by pulling the connecting sleeve, the filter screen plate is easy to detach, and the filter screen plate is convenient to clean.

Description

Technical Field

[0001] The present application relates to the field of heat exchangers, and in particular to an absorption type large temperature difference heat exchanger unit. Background Art

[0002] While generating electricity, thermal power plants usually use steam extraction or exhaust from steam turbines to provide heat to users. Its main working principle is to use the hot water generated by thermal power plants for heating after reheating. In the heating system, heat is exchanged through an absorption type large temperature difference heat exchanger, which can ensure the heat utilization effect and reduce heat loss. The large temperature difference heat exchanger is equivalent to a combination of a single-effect hot water heat pump unit and a plate heat exchanger. When working, the heat pump unit transfers the low-temperature waste heat to the higher temperature heating side, and the heat on the heating side is transferred to the low-temperature heating medium through the plate heat exchanger.

[0003] In a traditional large temperature difference heat exchanger unit, in order to prevent liquid impurities from entering the interior of the heat exchanger unit, a filter is usually installed at the water inlet of the heat exchanger unit for filtering. In actual work, when the filter needs to be cleaned, the water inlet and the external water inlet pipeline need to be separated. Only after the water inlet and the external water inlet pipeline are separated can the filter inside the water inlet be cleaned. The water inlet and the water inlet pipe are usually connected and fixed by the cooperation of multiple bolts and flanges, which is cumbersome and inconvenient to separate, making it inconvenient to clean the filter. Utility Model Content

[0004] In order to make up for the above shortcomings, the present application provides an absorption type large temperature difference heat exchange unit, aiming to improve the problem that it is inconvenient to clean the filter.

[0005] An embodiment of the present application provides an absorption type large temperature difference heat exchange unit, including a heat exchanger and a filter assembly.

[0006] A primary water inlet pipe is arranged on one side of the heat exchanger, and a secondary water inlet pipe is arranged on the other side of the heat exchanger.

[0007] The filter components are provided in two groups, and the two groups of filter components include a filter screen plate, a connecting sleeve and a connecting pipe. The two connecting sleeves are respectively slidably sleeved on the outside of the primary water inlet pipe and the secondary water inlet pipe, and the connecting sleeve is sleeved on the outside of the filter screen plate. One side of the two filter screen plates is respectively tightly pressed against one end of the primary water inlet pipe and one end of the secondary water inlet pipe, and the connecting pipe is slidably inserted into the inside of the connecting sleeve, and the connecting pipe is tightly pressed against the filter screen plate.

[0008] In a specific embodiment, the inner walls of the two connecting sleeves are both provided with sealing sleeves, and the inner walls of the two sealing sleeves are respectively tightly pressed against the outer walls of the primary water inlet pipe and the secondary water inlet pipe.

[0009] In a specific implementation, a first magnetic plate is disposed on the outside of the primary water inlet pipe and the secondary water inlet pipe, and a second magnetic plate is disposed on one end of the two connecting sleeves, and the second magnetic plate is adsorbed on the first magnetic plate.

[0010] In a specific embodiment, the outer sleeve of the filter screen is provided with a fixed tube, one side of the fixed tube is provided with a first sealing ring, and two first sealing rings are respectively tightly pressed against one end of the primary water inlet pipe and the secondary water inlet pipe.

[0011] In a specific implementation manner, a second sealing ring is provided at one end of each of the two connecting pipes, and each of the second sealing rings is tightly pressed against the fixing pipe.

[0012] In a specific embodiment, a first flange is provided at one end of the two connecting pipes away from the second sealing ring.

[0013] In a specific embodiment, the tube body of the connecting tube is sleeved with a connecting plate, one side of the connecting plate is provided with an elastic member, one end of the elastic member is fixedly connected to the connecting sleeve, and the elastic member is sleeved on the tube body of the connecting tube.

[0014] In a specific implementation, a primary water outlet pipe is provided on one side of the heat exchanger, a secondary water outlet pipe is provided on the other side of the heat exchanger, and a second flange is provided at one end of each of the primary water outlet pipe and the secondary water outlet pipe.

[0015] In a specific embodiment, the primary water outlet pipe is located below the primary water inlet pipe, and the secondary water outlet pipe is located above the secondary water inlet pipe.

[0016] The beneficial effect of the utility model is that the absorption type large temperature difference heat exchanger unit obtained by the above design can be used to clean the filter screen by pulling the connecting sleeve in the direction away from the heat exchanger during use, so that the connecting sleeve moves in the direction away from the heat exchanger, thereby exposing the filter screen, and then the filter screen can be removed, and then the filter screen can be cleaned. The filter screen can be removed by pulling the connecting sleeve, which makes the removal of the filter screen simpler and the cleaning of the filter screen more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the structure of an absorption type large temperature difference heat exchange unit provided in an embodiment of the present application;

[0019] Figure 2 A schematic diagram of the heat exchanger structure provided for the implementation mode of the present application;

[0020] Figure 3 A schematic diagram of the partial structure of a primary water inlet pipe and a filter assembly provided in an embodiment of the present application;

[0021] Figure 4 A schematic diagram of the partial structure of the secondary water inlet pipe and the filter assembly provided in the embodiment of the present application;

[0022] Figure 5 This is a schematic diagram of the structure of the filter screen plate and fixed tube part provided in the implementation mode of the present application.

[0023] In the figure: 100-heat exchanger; 110-primary water inlet pipe; 120-secondary water inlet pipe; 130-first magnetic plate; 140-primary water outlet pipe; 150-secondary water outlet pipe; 160-second flange; 200-filter assembly; 210-filter screen; 211-fixing pipe; 212-first sealing ring; 220-connecting sleeve; 221-sealing sleeve; 222-second magnetic plate; 230-connecting pipe; 231-second sealing ring; 232-first flange; 233-connecting plate; 234-elastic member. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0025] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0026] See also Figure 1The present application provides an absorption type large temperature difference heat exchange unit, including a heat exchanger 100 and a filter assembly 200.

[0027] See also Figure 1-2 A primary water inlet pipe 110 is provided on one side of the heat exchanger 100, and a secondary water inlet pipe 120 is provided on the other side of the heat exchanger 100. A primary water outlet pipe 140 is provided on one side of the heat exchanger 100, and a secondary water outlet pipe 150 is provided on the other side of the heat exchanger 100. A second flange 160 is provided at one end of each of the primary water outlet pipe 140 and the secondary water outlet pipe 150. The primary water outlet pipe 140 is located below the primary water inlet pipe 110, and the secondary water outlet pipe 150 is located above the secondary water inlet pipe 120. Hot water containing heat can enter from the inside of the primary water inlet pipe 110, and can be discharged through the primary water outlet pipe 140 after heat exchange in the heat exchanger 100. The heating medium enters from the secondary water inlet pipe 120, and the heating medium is discharged from the secondary water outlet pipe 150 after heat exchange in the heat exchanger 100 with the temperature increased.

[0028] See also Figure 1-5 There are two groups of filter components 200, both of which include a filter screen plate 210, a connecting sleeve 220 and a connecting pipe 230. The two connecting sleeves 220 are respectively slidably sleeved on the outside of the primary water inlet pipe 110 and the secondary water inlet pipe 120. The inner walls of the two connecting sleeves 220 are respectively provided with sealing sleeves 221. The inner walls of the two sealing sleeves 221 are respectively tightly pressed against the outer walls of the primary water inlet pipe 110 and the secondary water inlet pipe 120. The outside of the primary water inlet pipe 110 and the secondary water inlet pipe 120 are both provided with a first magnetic plate 130, and the first magnetic plate 130 is fixedly sleeved on the outside of the first magnetic plate 130. One end of the two connecting sleeves 220 is provided with a second magnetic plate 222, and the second magnetic plate 222 is adsorbed on the first magnetic plate 130.

[0029] In the present application, the connecting sleeve 220 is sleeved on the outside of the filter screen plate 210, and one side of the two filter screen plates 210 is respectively pressed against one end of the primary water inlet pipe 110 and one end of the secondary water inlet pipe 120, and the outer sleeve of the filter screen plate 210 is provided with a fixed tube 211, and one side of the fixed tube 211 is provided with a first sealing ring 212, and the two first sealing rings 212 are respectively pressed against one end of the primary water inlet pipe 110 and one end of the secondary water inlet pipe 120, and the outer wall of the fixed tube 211 is pressed against the inner wall of the sealing sleeve 221.

[0030] In this embodiment, the connecting pipe 230 is slidably inserted into the interior of the connecting sleeve 220, the outer wall of the connecting pipe 230 is tightly pressed against the inner wall of the sealing sleeve 221, the connecting pipe 230 is tightly pressed against the filter screen plate 210, one end of the two connecting pipes 230 is provided with a second sealing ring 231, the second sealing ring 231 is tightly pressed against the fixed pipe 211, and the end of the two connecting pipes 230 away from the second sealing ring 231 is provided with a first flange 232.

[0031] In the specific setting, the tube body of the connecting tube 230 is sleeved with a connecting plate 233, and an elastic member 234 is provided on one side of the connecting plate 233. One end of the elastic member 234 is fixedly connected to the connecting sleeve 220. The elastic member 234 is sleeved on the tube body of the connecting tube 230, and the elastic member 234 is a spring.

[0032] Specifically, the working principle of the absorption type large temperature difference heat exchange unit is as follows: when in use, the connecting pipe 230 connected with the primary water inlet pipe 110 is connected with the pipeline for conveying hot water from the outside, and the hot water enters the heat exchanger 100 through the connecting pipe 230 and the primary water inlet pipe 110. When the hot water passes through the filter screen 210, it will be filtered by the filter screen 210. After the hot water is heat exchanged inside the heat exchanger 100, it becomes low-temperature water and is discharged from the primary water outlet pipe 140. The connecting pipe 230 connected with the secondary water inlet pipe 120 is connected with the pipeline for conveying heating medium from the outside, and the heating medium enters the heat exchanger 100 through the connecting pipe 230 and the secondary water inlet pipe 120. When the heating medium passes through the filter screen 210, it will be filtered. After the heating medium is heated in the heat exchanger 100 and its temperature rises, it is discharged from the secondary water outlet pipe 150. When the filter screen 210 needs to be cleaned, the connecting sleeve 220 is pulled away from the heat exchanger 100 to separate the first magnetic plate 130 from the second magnetic plate 222, so that the connecting sleeve 220 moves toward the first flange 232, thereby exposing the fixed pipe 211, and then the fixed pipe 211 can be removed, and then the filter screen 210 inside the fixed pipe 211 can be cleaned. The fixed pipe 211 and the filter screen 210 can be disassembled by pulling the connecting sleeve 220, so that the disassembly of the filter screen 210 is relatively simple, and the cleaning of the filter screen 210 is relatively convenient.

[0033] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0034] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An absorption type large temperature difference heat exchange unit, characterized in that: include A heat exchanger (100), wherein a primary water inlet pipe (110) is disposed on one side of the heat exchanger (100), and a secondary water inlet pipe (120) is disposed on the other side of the heat exchanger (100); A filter assembly (200), wherein the filter assembly (200) is provided with two groups, and the two groups of the filter assembly (200) each include a filter screen plate (210), a connecting sleeve (220) and a connecting pipe (230), wherein the two connecting sleeves (220) are respectively slidably sleeved on the outside of the primary water inlet pipe (110) and the secondary water inlet pipe (120), and the connecting sleeve (220) is sleeved on the outside of the filter screen plate (210), and one side of the two filter screen plates (210) is respectively tightly abutted against one end of the primary water inlet pipe (110) and one end of the secondary water inlet pipe (120), and the connecting pipe (230) is slidably inserted into the interior of the connecting sleeve (220), and the connecting pipe (230) is tightly abutted against the filter screen plate (210).

2. The absorption type large temperature difference heat exchange unit according to claim 1, characterized in that: The inner walls of the two connecting sleeves (220) are both provided with sealing sleeves (221), and the inner walls of the two sealing sleeves (221) are respectively tightly abutted against the outer walls of the primary water inlet pipe (110) and the secondary water inlet pipe (120).

3. The absorption type large temperature difference heat exchange unit according to claim 1, characterized in that: A first magnetic plate (130) is disposed outside the primary water inlet pipe (110) and the secondary water inlet pipe (120), and a second magnetic plate (222) is disposed at one end of the two connecting sleeves (220), and the second magnetic plate (222) is adsorbed on the first magnetic plate (130).

4. The absorption type large temperature difference heat exchange unit according to claim 1, characterized in that: The outer sleeve of the filter screen plate (210) is provided with a fixed tube (211), one side of each of the fixed tubes (211) is provided with a first sealing ring (212), and the two first sealing rings (212) are respectively tightly abutted against one end of the primary water inlet pipe (110) and one end of the secondary water inlet pipe (120).

5. The absorption type large temperature difference heat exchange unit according to claim 4, characterized in that: One end of each of the two connecting pipes (230) is provided with a second sealing ring (231), and each of the second sealing rings (231) is tightly pressed against the fixing pipe (211).

6. The absorption type large temperature difference heat exchange unit according to claim 5, characterized in that: The two connecting pipes (230) are both provided with a first flange (232) at one end away from the second sealing ring (231).

7. The absorption type large temperature difference heat exchange unit according to claim 1, characterized in that: The tube body of the connecting tube (230) is sleeved with a connecting plate (233), one side of the connecting plate (233) is provided with an elastic member (234), one end of the elastic member (234) is fixedly connected to the connecting sleeve (220), and the elastic member (234) is sleeved on the tube body of the connecting tube (230).

8. The absorption type large temperature difference heat exchange unit according to claim 1, characterized in that: A primary water outlet pipe (140) is provided on one side of the heat exchanger (100), and a secondary water outlet pipe (150) is provided on the other side of the heat exchanger (100); a second flange (160) is provided at one end of each of the primary water outlet pipe (140) and the secondary water outlet pipe (150).

9. The absorption type large temperature difference heat exchange unit according to claim 8, characterized in that: The primary water outlet pipe (140) is located below the primary water inlet pipe (110), and the secondary water outlet pipe (150) is located above the secondary water inlet pipe (120).

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