Spiral-plate heat exchanger

Abstract

The utility model discloses a spiral plate heat exchanger, which relates to the technical field of plate heat exchangers and comprises a heat exchanger body, two groups of heat exchange plates are arranged in the heat exchanger body, a first heat exchange cavity and a second heat exchange cavity are respectively formed between the two groups of heat exchange plates, and sealing covers are detachably mounted at two ends of the heat exchanger body. A first connecting pipe is detachably installed at one end of the cold medium inlet pipe, a filter box is installed at one end of the first connecting pipe, a second connecting pipe is installed at one end of the filter box, and a detection assembly is jointly installed on the first connecting pipe and the second connecting pipe. The detection assembly is arranged, the pressure difference detector in the detection assembly detects the pressure difference of the filtered heat exchange medium between the first connecting pipe and the second connecting pipe, the controller judges the detected pressure difference data, and when the pressure difference value is larger than the specified value, the controller controls the alarm to give an alarm. And a worker can be reminded.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, specifically a spiral plate heat exchanger. Background Technology

[0002] Currently, when using existing spiral plate heat exchangers, in order to avoid contamination of the metal plate surface by the heat exchange medium, a filter device is usually installed at the inlet of the heat exchange medium. However, when the filter device is in use, impurities usually clog the internal filter screen, thereby affecting the flow rate of the heat exchange medium, affecting the heat exchange efficiency, and making it impossible to detect in time whether the internal filter screen needs to be replaced, which is inconvenient to use. Utility Model Content

[0003] The purpose of this invention is to provide a spiral plate heat exchanger to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a spiral plate heat exchanger, comprising a heat exchanger body, wherein two sets of heat exchange plates are installed inside the heat exchanger body, and a first heat exchange chamber and a second heat exchange chamber are formed between the two sets of heat exchange plates respectively; both ends of the heat exchanger body are detachably fitted with sealing caps, and a cold medium inlet pipe and a hot medium inlet pipe are respectively installed on the two sealing caps; a cold medium outlet pipe and a hot medium outlet pipe are offsetly installed on the side surface of the heat exchanger body; a connecting pipe one is detachably installed at one end of the cold medium inlet pipe; a filter box is installed at one end of the connecting pipe one; a connecting pipe two is installed at one end of the filter box; and a detection component is jointly installed on the connecting pipe one and the connecting pipe two.

[0005] Preferably, the sealing cover and the heat exchanger body, as well as the connecting pipe and the cold medium inlet pipe, are all connected by flanges.

[0006] Preferably, the detection component includes a differential pressure detector, a controller, and an alarm. The two detection ends of the differential pressure detector are respectively connected to connecting pipe one and connecting pipe two through pipes. The controller is installed on the upper end of the differential pressure detector, and the alarm is installed on the upper end of the controller.

[0007] Preferably, the filter box has a filter chamber inside, and a sealing plate is bolted to the front end of the filter box outside the filter chamber. Two filter layers are slidably installed inside the filter chamber.

[0008] Preferably, two limiting plates are installed on both sides of the upper and lower walls of the filter chamber, the filter layer is slidably installed between the upper and lower limiting plates, and a connecting rod is installed between the two filter layers, with both ends of the connecting rod extending into the interior of the two filter layers respectively.

[0009] Preferably, the inner wall of the heat exchanger body is equipped with a heat insulation layer.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. The differential pressure detector in the detection component detects the pressure difference of the filtered heat exchange medium between connecting pipe one and connecting pipe two, and transmits the data to the controller. The controller judges the detected pressure difference data. When the pressure difference value is greater than the specified value, the controller controls the alarm to sound an alarm, which can remind the staff to replace the filter layer that needs to be replaced in time.

[0012] 2. By using a connecting rod to connect the two filter layers, when replacing the filter layers, pulling one filter layer will move the other filter layer via the connecting rod. This effectively avoids the situation where only one filter layer is replaced due to negligence, thus preventing the filtration effect from being affected. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a cross-sectional view of the present invention;

[0015] Figure 3 This is a partial cross-sectional view of the filter box of this utility model.

[0016] In the diagram: 1. Heat exchanger body; 2. Heat exchange plate; 3. First heat exchange chamber; 4. Second heat exchange chamber; 5. Sealing cover; 6. Cold medium inlet pipe; 7. Hot medium inlet pipe; 8. Cold medium outlet pipe; 9. Hot medium outlet pipe; 10. Connecting pipe one; 11. Filter box; 12. Connecting pipe two; 14. Filter chamber; 15. Sealing plate; 16. Filter layer; 17. Limiting plate; 18. Connecting rod; 19. Insulation layer; 1301. Differential pressure detector; 1302. Controller; 1303. Alarm. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figures 1 to 3As shown, this embodiment includes a heat exchanger body 1, inside which two sets of heat exchange plates 2 are installed. The two sets of heat exchange plates 2 are connected to each other. The heat exchange plates 2 have a certain thermal conductivity and can transfer heat. The arrangement of the heat exchange plates 2 is a known prior art in the field of heat exchanger technology. A first heat exchange cavity 3 and a second heat exchange cavity 4 are formed between the two sets of heat exchange plates 2, respectively. The first heat exchange cavity 3 and the second heat exchange cavity 4 are used for the flow of cold and hot media. Both ends of the heat exchanger body 1 are detachably equipped with sealing caps 5. The sealing caps 5 are used to seal both ends of the heat exchange plates 2, and the sealing caps 5 can be removed to facilitate cleaning of the surface of the heat exchange plates 2 after long-term use. A cold medium inlet pipe 6 and a hot medium inlet pipe 7 are respectively installed on the cover 5. A cold medium outlet pipe 8 and a hot medium outlet pipe 9 are installed offset on the side surface of the heat exchanger body 1. A connecting pipe 10 is detachably installed at one end of the cold medium inlet pipe 6. A filter box 11 is installed at one end of the connecting pipe 10. The filter box 11 is used to filter the heat exchange medium entering the heat exchanger body 1. A connecting pipe 2 12 is installed at one end of the filter box 11. A detection component is installed on both the connecting pipe 10 and the connecting pipe 2 12. The detection component is used to detect the pressure difference between the connecting pipe 10 and the connecting pipe 2 12, and to determine whether the filter layer 16 inside the filter box 11 needs to be replaced based on the pressure difference.

[0019] Specifically, the sealing cover 5 and the heat exchanger body 1, as well as the connecting pipe 10 and the cold medium inlet pipe 6, are all connected by flanges, allowing them to be disassembled and ensuring the sealing during connection.

[0020] Furthermore, the detection assembly includes a differential pressure detector 1301, a controller 1302, and an alarm 1303. The two detection ends of the differential pressure detector 1301 are connected to connecting pipe 10 and connecting pipe 12 respectively via pipes. The controller 1302 is installed on the upper end of the differential pressure detector 1301, and the alarm 1303 is installed on the upper end of the controller 1302. The differential pressure detector 1301 detects the pressure difference between connecting pipe 10 and connecting pipe 12 and transmits the data to the controller 1302. The controller 1302 monitors the detected pressure difference. The data is used for judgment. When the pressure difference value is greater than the specified value, the controller 1302 controls the alarm 1303 to sound an alarm, which can remind the staff to replace the filter layer 16 in time. The principle is that when there are too many impurities on the filter layer 16, the excessive impurities will reduce the flow rate of the heat exchange medium passing through the filter layer 16. The slower flow rate will reduce the pressure. The differential pressure detector 1301 can detect the pressure difference between the two pipes. The detection principle of the differential pressure detector 1301 is a known existing technology, so it will not be described in detail.

[0021] Furthermore, a filter chamber 14 is provided inside the filter box 11. A sealing plate 15 is bolted to the front end of the filter box 11 outside the filter chamber 14. Two filter layers 16 are slidably installed inside the filter chamber 14. The filter layers 16 inside the filter chamber 14 can be replaced by removing the sealing plate 15.

[0022] Furthermore, two limiting plates 17 are installed on both sides of the upper and lower walls of the filter chamber 14. The filter layer 16 is slidably installed between the two limiting plates 17. A connecting rod 18 is installed between the two filter layers 16. The two ends of the connecting rod 18 extend into the interior of the two filter layers 16 respectively. The specific material of the filter layer 16 can be changed according to whether the heat exchange medium is gas or liquid. When one filter layer 16 is disassembled, the two filter layers 16 can be removed at the same time under the action of the connecting rod 18, which makes it convenient to replace the two filter layers 16 at the same time and avoids replacing only one filter layer 16.

[0023] Furthermore, an insulation layer 19 is installed on the inner wall of the heat exchanger body 1. The insulation layer 19 effectively prevents heat from dissipating from the inside of the heat exchanger body 1 to the outside, thereby improving heat exchange efficiency, reducing heat energy waste, and playing a role in environmental protection and energy saving.

[0024] The usage method of this embodiment is as follows: the cold medium inlet pipe 6 and the cold medium outlet pipe 8 are connected to the external cold medium pipeline, and the hot medium inlet pipe 7 and the hot medium outlet pipe 9 are connected to the external hot medium pipeline. When the heat exchange medium enters the first heat exchange chamber 3 and the second heat exchange chamber 4, the hot medium and the cold medium are filtered through the filter box 11. The two filter layers 16 inside the filter box 11 can filter large and small particulate impurities. At the same time, the differential pressure detector 1301 detects the pressure difference between the connecting pipe 10 and the connecting pipe 2 and transmits the data to the controller 130. 2. The controller 1302 judges the detected pressure difference data. The hot medium and cold medium enter the first heat exchange chamber 3 and the second heat exchange chamber 4 for heat exchange treatment. After the heat exchange is completed, they are discharged. After a period of use, the impurities on the filter layer 16 will increase, the flow rate will slow down, and the internal pressure will increase. When the detected pressure difference data is greater than the specified value, the controller 1302 controls the alarm 1303 to sound an alarm, which can remind the staff. The staff can then stop the heat exchange operation, remove the sealing plate 15, and replace the filter layer 16.

[0025] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A spiral plate heat exchanger comprising a heat exchanger body (1), characterized in that: The heat exchanger body (1) is internally provided with two groups of heat exchange plates (2), and first and second heat exchange cavities (3) and (4) are formed between the two groups of heat exchange plates (2), respectively; the heat exchanger body (1) is detachably provided with sealing covers (5) at both ends, and cold medium inlet pipes (6) and hot medium inlet pipes (7) are respectively arranged on the two sealing covers (5); the heat exchanger body (1) is laterally provided with cold medium outlet pipes (8) and hot medium outlet pipes (9) in a staggered manner; one end of the cold medium inlet pipe (6) is detachably provided with a connecting pipe (10), one end of the connecting pipe (10) is provided with a filter box (11), one end of the filter box (11) is provided with a connecting pipe (12), and a detection assembly is arranged on the connecting pipe (10) and the connecting pipe (12).

2. The spiral plate heat exchanger according to claim 1, characterized in that: The sealing cover (5) and the heat exchanger body (1), and the connecting pipe (10) and the cold medium inlet pipe (6) are connected through flanges.

3. The spiral plate heat exchanger according to claim 1, characterized in that: The detection assembly comprises a differential pressure detector (1301), a controller (1302) and an alarm (1303), two detection ends of the differential pressure detector (1301) are respectively connected with the connecting pipe (10) and the connecting pipe (12) through pipes, the controller (1302) is arranged on the upper end of the differential pressure detector (1301), and the alarm (1303) is arranged on the upper end of the controller (1302).

4. The spiral plate heat exchanger according to claim 1, characterized in that: The filter box (11) is internally provided with a filter cavity (14), the front end of the filter cavity (14) is provided with a sealing plate (15) outside the filter box (11) through bolts, and two filter layers (16) are slidably arranged in the filter cavity (14).

5. The spiral plate heat exchanger according to claim 4, characterized in that: Two limiting plates (17) are arranged on the upper and lower walls of the filter cavity (14), the filter layers (16) are slidably arranged between the two limiting plates (17), a connecting rod (18) is arranged between the two filter layers (16), and the connecting rod (18) extends into the two filter layers (16) at both ends.

6. The spiral plate heat exchanger according to claim 1, characterized in that: A heat preservation layer (19) is arranged on the inner wall of the heat exchanger body (1).

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