Heat exchange system
By setting pressure detection and control elements in the heat exchange system, we ensure that the plates on the side runners of the plate heat exchanger have spacing, solving the problems of cleaning dead corners and coking of oyster sauce, and achieving convenient cleaning and continuous production.
Patent Information
- Application Number
- CN202421266558.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-06-04
AI Technical Summary
During cleaning, existing plate heat exchangers are prone to forming cleaning dead corners due to the large pressure on the contact point of the plate, resulting in oyster sauce residue and coking, affecting product quality, and are difficult to clean, time-consuming and labor-consuming, and affecting continuous production.
A heat exchange system is designed. During cleaning, by setting up pressure detection elements and pressure control elements, we ensure that there is a spacing between the plates on the material side flow path, forming a cleaning channel to avoid cleaning dead corners.
It realizes convenient cleaning of plate heat exchangers, eliminates the cleaning dead corners between plates, avoids coking of oyster sauce, reduces the frequency of disassembly and cleaning, saves time and effort, and is conducive to continuous production.
Smart Images
Figure CN222481208U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heat exchange equipment, in particular to a heat exchange system. Background Art
[0002] In the production process of oyster sauce, after the oyster sauce is heated by a plate heat exchanger, the plate heat exchanger is generally cleaned with alkali and acid. However, due to the high pressure at the contact point of the plate of the existing plate heat exchanger, such as Figure 1 As shown in the figure, the contact points of the plates are in close contact, which easily forms a cleaning dead corner, resulting in the inability to effectively remove the residual oyster sauce at the contact points of the plates when cleaning the plate heat exchanger. In the long run, it is easy to form coking, affecting product quality. At present, in order to remove the oyster sauce coking formed at the contact points of the plates, it is generally necessary to regularly disassemble the plate heat exchanger for cleaning, which is difficult to clean, time-consuming and labor-intensive, and has an adverse effect on continuous production. Utility Model Content
[0003] The purpose of the utility model is to provide a heat exchange system to facilitate monitoring of the pressure on the material side and the medium side of a plate heat exchanger, so that there is a spacing between the two plates of the material side flow channel to avoid the formation of cleaning dead corners at the contact points of the plates, thereby facilitating the cleaning of the plate heat exchanger.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0005] The heat exchange system of the utility model comprises:
[0006] A plate heat exchanger having a material pipeline and a medium pipeline;
[0007] During cleaning, the pressure of the material pipeline is greater than that of the medium pipeline, and there is a gap between the plates of the plate heat exchanger to form a cleaning channel.
[0008] In some embodiments, the material pipeline includes a feed pipeline and a discharge pipeline; the medium pipeline includes a medium inlet pipeline and a medium outlet pipeline;
[0009] The feed pipeline is provided with a first pressure detection element;
[0010] The discharge pipe is provided with a second pressure detection element and a pressure control element in sequence according to the material flow direction, and the pressure control element is used to control the pressure of the feed pipe and the pressure of the discharge pipe to be constant;
[0011] The medium inlet pipeline is provided with a regulating valve and a third pressure detection element in sequence according to the medium flow direction;
[0012] The medium outlet pipeline is provided with a fourth pressure detection element;
[0013] During cleaning, the pressure value of the fourth pressure detection element is smaller than the pressure value of the first pressure detection element, and the pressure value of the third pressure detection element is smaller than the pressure value of the second pressure detection element.
[0014] In some embodiments, the difference between the pressure value of the fourth pressure detection element and the pressure value of the first pressure detection element is between 1.5 bar and 2.5 bar.
[0015] In some embodiments, the difference between the pressure value of the third pressure detection element and the pressure value of the second pressure detection element is between 1.5 bar and 2.5 bar.
[0016] In some embodiments, the heat exchange system further includes a cleaning bypass and a cleaning pump, one end of the cleaning bypass is connected to the feed pipe, the other end of the cleaning bypass is connected to the discharge pipe, and the cleaning pump is installed on the cleaning bypass.
[0017] In some embodiments, a first valve component and a second valve component are disposed on the cleaning bypass, and the first valve component and the second valve component are disposed on both sides of the cleaning pump, respectively.
[0018] In some embodiments, the heat exchange system further includes a controller, and the first pressure detection element, the second pressure detection element, the third pressure detection element, the fourth pressure detection element, and the regulating valve are electrically connected to the controller respectively.
[0019] In some embodiments, the pressure control element is electrically connected to the controller.
[0020] In some embodiments, the heat exchange system also includes a first material tank, a second material tank and a material pump, the first material tank is connected to the feed pipe, the second material tank is connected to the discharge pipe, the material pump is installed on the feed pipe, and the first material tank has a material inlet and a cleaning interface for connecting to a cleaning system.
[0021] In some embodiments, the heat exchange system further includes a medium tank and a medium pump, the medium tank is connected to the medium inlet pipe and the medium outlet pipe, and the medium pump is installed on the medium inlet pipe.
[0022] Compared with the prior art, the heat exchange system of the present utility model has the following beneficial effects:
[0023] The heat exchange system of the utility model embodiment includes a plate heat exchanger, and the plate heat exchanger has a feed pipe and a discharge pipe. During cleaning, the pressure of the material pipe is greater than that of the medium pipe, so that the pressure on the material side of the plate heat exchanger is greater than that on the medium side, so that there is a spacing between the plates of the material side flow channel of the plate heat exchanger, forming a cleaning channel, which is convenient for the cleaning agent to enter the plates for cleaning when cleaning the plate heat exchanger, and avoids the formation of cleaning dead corners at the contact points due to close contact between the plates of the plate heat exchanger, thereby eliminating the cleaning dead corners between the plates, avoiding the formation of oyster sauce coking at the contact points of the plates due to incomplete cleaning, facilitating the cleaning of the plate heat exchanger, and reducing the frequency of disassembling the plate heat exchanger, saving time and labor, and facilitating continuous production. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a schematic diagram of plate contact of a plate heat exchanger in the prior art;
[0025] Figure 2 is a schematic diagram of a heat exchange system according to an embodiment of the utility model;
[0026] Figure 3 It is a schematic diagram of a plate in an embodiment of the utility model.
[0027] Numbers in the figure:
[0028] 10. Plate heat exchanger; 11. Plate;
[0029] 20. Feed pipe; 21. First pressure detection element;
[0030] 30. Discharge pipe; 31. Second pressure detection element; 32. Pressure control element;
[0031] 40. medium inlet pipeline; 41. regulating valve; 42. third pressure detection element; 43. tenth valve member;
[0032] 50. medium outlet pipeline; 51. fourth pressure detection element;
[0033] 60. cleaning bypass; 61. cleaning pump; 62. first valve member; 63. second valve member;
[0034] 70, first material tank; 701, third valve member; 702, fourth valve member; 703, fifth valve member; 71, second material tank; 711, sixth valve member; 712, seventh valve member; 713, eighth valve member; 72, material pump;
[0035] 80. medium tank; 801. ninth valve component; 81. medium pump; 82. one-way valve. DETAILED DESCRIPTION
[0036] In the description of the present invention, it should be noted that the terms "center", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0038] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0039] See also Figure 2 and Figure 3 An embodiment of the utility model provides a heat exchange system, including a plate heat exchanger 10, having a material pipeline and a medium pipeline. During cleaning, the pressure of the material pipeline is greater than the pressure of the medium pipeline. There is a spacing between the plates of the plate heat exchanger to form a cleaning channel.
[0040] A cleaning channel is formed between the plates of the plate heat exchanger, which facilitates the cleaning agent to enter between the plates when cleaning the plate heat exchanger, avoiding the formation of cleaning dead corners at the contact points due to the close contact between the plates of the plate heat exchanger, thereby eliminating the cleaning dead corners between the plates and avoiding the formation of oyster sauce coking at the contact points of the plates due to incomplete cleaning, facilitating the cleaning of the plate heat exchanger, and reducing the frequency of disassembling the plate heat exchanger, saving time and labor, and being conducive to continuous production.
[0041] See also Figure 2As shown, in some embodiments, the material pipeline includes a feed pipeline 20 and a discharge pipeline 30, the medium pipeline includes a medium inlet pipeline 40 and a medium outlet pipeline 50, the plate heat exchanger 10 has a feed port, a discharge port, a medium inlet and a medium outlet, the feed port is used to supply materials into the plate heat exchanger 10, the medium inlet is used to supply heat exchange medium into the plate heat exchanger 10, the medium outlet is used for the heat exchange medium to flow out of the plate heat exchanger 10, and the discharge port is used for the material to flow out of the plate heat exchanger 10 after heat exchange with the heat exchange medium in the plate heat exchanger 10; the feed pipeline 20 is connected to the feed port, and the material is transported to the feed port through the feed pipeline 20. The feed pipeline 20 is provided with a first pressure detection element 21, and the first pressure detection element 21 is used to detect the pressure of the feed pipeline 20; the discharge pipeline 30 is connected to the discharge port, and the discharge pipeline 30 is used to output the discharged from the discharge port. The material, the discharge pipeline 30 is provided with a second pressure detection element 31 and a pressure control element 32 in sequence according to the material flow direction, the pressure control element 32 is used to control the pressure of the feed pipeline 20 and the pressure of the discharge pipeline 30 to be constant, and the second pressure detection element 31 is used to detect the pressure of the discharge pipeline 30; the medium inlet pipeline 40 is connected to the medium inlet, and the medium inlet pipeline 40 is used to transport heat exchange medium to the medium inlet. The medium inlet pipeline 40 is provided with a regulating valve 41 and a third pressure detection element 42 in sequence according to the medium flow direction, and the third pressure detection element 42 is used to detect the pressure of the medium inlet pipeline 40; the medium outlet pipeline 50 is connected to the medium outlet, and the medium outlet pipeline 50 is used to output the heat exchange medium flowing out of the medium outlet. The medium outlet pipeline 50 is provided with a fourth pressure detection element 51, and the fourth pressure detection element 51 is used to detect the pressure of the medium outlet pipeline 50. By setting the first pressure detection element 21, the second pressure detection element 31, the third pressure detection element 42 and the fourth pressure detection element 51, it is convenient to monitor the pressure of the feed pipe 20, the discharge pipe 30, the inlet medium pipe 40 and the outlet medium pipe 50 of the plate heat exchanger 10.
[0042] During cleaning, the pressure value of the fourth pressure detection element 51 is smaller than the pressure value of the first pressure detection element 21, and the pressure value of the third pressure detection element 42 is smaller than the pressure value of the second pressure detection element 31, so that there is a spacing between the plates 11 of the plate heat exchanger 10 to form a cleaning channel.
[0043] The pressure of the medium inlet pipe 40 and the pressure of the medium outlet pipe 50 are adjusted by adjusting the opening of the regulating valve 41, thereby adjusting the pressure value of the third pressure detection element 42 and the pressure value of the fourth pressure detection element 51, so that the pressure value of the fourth pressure detection element 51 is smaller than the pressure value of the first pressure detection element 21, and the pressure value of the third pressure detection element 42 is smaller than the pressure value of the second pressure detection element 31, so that the material side pressure of the plate heat exchanger 10 is greater than the medium side pressure, ensuring that the material side plates 11 are not closely combined, so that there is a spacing between the plates 11 of the material side flow channel of the plate heat exchanger 10, forming a cleaning channel, reducing material accumulation, facilitating the cleaning agent to enter the plates 11 for cleaning when cleaning the plate heat exchanger 10, reducing oyster sauce residue, avoiding the formation of oyster sauce coking at the contact points of the plates due to incomplete cleaning, and reducing the risk of product abnormality.
[0044] In some embodiments, the pressure control element 32 is a back pressure valve, and the pipeline back pressure is adjusted by adjusting the opening of the back pressure valve. The first pressure detection element 21, the second pressure detection element 31, the third pressure detection element 42 and the fourth pressure detection element 51 are all pressure transmitters.
[0045] In some embodiments, the difference between the pressure value of the fourth pressure detection element 51 and the pressure value of the first pressure detection element 21 is between 1.5 bar and 2.5 bar. The pressure difference within this range satisfies the slight spacing between the material side plates 11 and ensures that the spacing between the material side plates 11 is not too large, resulting in excessive pressure on the heat exchange medium side plates to damage the plates 11. For example, the difference between the pressure value of the fourth pressure detection element 51 and the pressure value of the first pressure detection element 21 can be 1.6 bar, 1.7 bar, 1.8 bar, 1.9 bar, 2.0 bar, 2.1 bar, 2.2 bar, 2.3 bar, 2.4 bar, etc. Preferably, the difference between the pressure value of the fourth pressure detection element 51 and the pressure value of the first pressure detection element 21 is 2.0 bar.
[0046] In some embodiments, the difference between the pressure value of the third pressure detection element 42 and the pressure value of the second pressure detection element 31 is between 1.5 bar and 2.5 bar. The pressure difference within this range satisfies the slight spacing between the material side plates 11 and ensures that the spacing between the material side plates 11 is not too large, resulting in excessive pressure on the heat exchange medium side plates and causing damage to the plates. For example, the difference between the pressure value of the third pressure detection element 42 and the pressure value of the second pressure detection element 31 can be 1.6 bar, 1.7 bar, 1.8 bar, 1.9 bar, 2.0 bar, 2.1 bar, 2.2 bar, 2.3 bar, 2.4 bar, etc. Preferably, the difference between the pressure value of the third pressure detection element 42 and the pressure value of the second pressure detection element 31 is 2.0 bar.
[0047] See also Figure 2 In some embodiments, the heat exchange system further includes a first material tank 70, a second material tank 71 and a material pump 72. The first material tank 70 is connected to the feed pipe 20 and is used to supply materials to the feed pipe 20. The second material tank 71 is connected to the discharge pipe 30 and is used to receive materials discharged from the discharge pipe 30. The material pump 72 is installed on the feed pipe 20 and provides power for the transportation of materials in the feed pipe 20. The first material tank 70 has a material inlet and a cleaning interface for connecting to a cleaning system. Materials are supplied to the first material tank 70 through the material inlet, and the cleaning system is conveniently connected through the cleaning interface. Cleaning agents are supplied to the first material tank 70 to clean the plate heat exchanger 10. The second material tank 71 has a material inlet, a material outlet and a cleaning outlet.
[0048] See also Figure 2 In some embodiments, the heat exchange system further includes a medium tank 80 and a medium pump 81. The medium tank 80 is connected to the medium inlet pipe 40 and the medium outlet pipe 50. The medium pump 81 is installed on the medium inlet pipe 40. The medium tank 80 is used to store heat exchange medium. The medium tank 80, the medium inlet pipe 40, and the medium outlet pipe 50 form a medium circulation pipeline. The medium pump 81 provides power for the circulation of the heat exchange medium. In some embodiments, the heat exchange system further includes a one-way valve 82, which is arranged on the medium outlet pipe 50. The one-way valve 82 ensures that the heat exchange medium can only flow in one direction, and prevents the heat exchange medium in the medium tank 80 from being discharged through the medium outlet pipe 50.
[0049] See also Figure 2 In some embodiments, the heat exchange system further includes a cleaning bypass 60 and a cleaning pump 61, one end of the cleaning bypass 60 is connected to the feed pipe 20, the other end of the cleaning bypass 60 is connected to the discharge pipe 30, and the cleaning pump 61 is installed on the cleaning bypass 60. When cleaning the plate heat exchanger 10, the cleaning agent can be circulated to the plate heat exchanger 10 through the cleaning bypass 60 and the cleaning pump 61, increasing the flow of the cleaning agent entering the plate heat exchanger 10, so that the cleaning of the plate heat exchanger 10 is more thorough. By adding the cleaning pump 61, the cleaning flow rate can be increased and the cleaning effect can be enhanced. In some embodiments, one end of the cleaning bypass 60 is connected to the feed pipe 20 between the first pressure detection element 21 and the material pump 72, and the other end of the cleaning bypass 60 is connected to the discharge pipe 30 between the second pressure detection element 31 and the pressure control element 32.
[0050] See also Figure 2In some embodiments, the cleaning bypass 60 is provided with a first valve member 62 and a second valve member 63, and the first valve member 62 and the second valve member 63 are respectively provided on both sides of the cleaning pump 61. The first valve member 62 and the second valve member 63 are used to control the on-off of the cleaning bypass 60, and to prevent the cleaning agent from flowing back, thereby preventing the cleaning agent in the feed pipeline 20 from being directly discharged from the cleaning bypass 60 without passing through the plate heat exchanger 10, and preventing the material in the feed pipeline 20 from entering the cleaning bypass 60.
[0051] In some embodiments, the heat exchange system further includes a controller, and the first pressure detection element 21, the second pressure detection element 31, the third pressure detection element 42, the fourth pressure detection element 51, and the regulating valve 41 are electrically connected to the controller respectively. Due to the setting of the pressure control element 32, the pressure value of the first pressure detection element 21 and the pressure value of the second pressure detection element 31 remain substantially constant, and the first pressure detection element 21 and the second pressure detection element 31 transmit pressure signals to the controller respectively. The controller controls the opening of the regulating valve 41 to adjust the pressure value of the third pressure detection element 42 and the pressure value of the fourth pressure detection element 51, so that the pressure value of the fourth pressure detection element 51 is less than the pressure value of the first pressure detection element 21, and the pressure value of the third pressure detection element 42 is less than the pressure value of the second pressure detection element 31.
[0052] In some embodiments, the pressure control element 32 is electrically connected to the controller. The pressure of the pressure control element 32 can be preset by the controller so that the pressure values of the first pressure detection element 21 and the second pressure detection element 31 are preset values.
[0053] In order to facilitate the operation and control of the on-off of the pipeline, valves are installed at appropriate positions of the pipeline. Figure 2 A third valve member 701 is provided at the material inlet of the first material tank 70, a fourth valve member 702 is provided at the cleaning interface of the first material tank 70, and a fifth valve member 703 is provided at the outlet of the first material tank 70. A sixth valve member 711 is provided at the material inlet of the second material tank 71, a seventh valve member 712 is provided at the material outlet of the second material tank 71, and an eighth valve member 713 is provided at the cleaning outlet of the second material tank 71. A ninth valve member 801 is provided at the outlet of the medium tank 80, and a tenth valve member 43 is provided on the medium inlet pipeline 40.
[0054] The working process of the utility model is:
[0055] The heat exchange system operates normally. When the material is heated, the third valve component 701 is opened to feed the first material tank 70, the fifth valve component 703, the material pump 72, the back pressure valve, and the sixth valve component 711 are opened, and the material enters the plate heat exchanger 10 through the feed pipe 20, exchanges heat with the heat exchange medium in the plate heat exchanger 10, and then enters the second material tank 71 through the discharge pipe 30, thereby realizing the material production process.
[0056] During the material heating process, the heat exchange medium provides energy. The ninth valve member 801, the medium pump 81, the tenth valve member 43, the regulating valve 41 and the check valve 82 are opened, and the heat exchange medium in the medium tank 80 enters the plate heat exchanger 10 through the medium inlet pipe 40 to exchange heat with the material, and then flows back to the medium tank 80 through the medium outlet pipe 50, realizing the circulation of the heat exchange medium.
[0057] During the material production process, the pressure of the feed pipe 20 is detected by the first pressure detection element 21, the pressure of the discharge pipe 30 is detected by the second pressure detection element 31, the pressure of the inlet medium pipe 40 is detected by the third pressure detection element 42, and the pressure of the outlet medium pipe 50 is detected by the fourth pressure detection element 51. The opening of the regulating valve 41 is adjusted to make the pressure value of the third pressure detection element 42 smaller than the pressure value of the second pressure detection element 31, and the pressure value of the fourth pressure detection element 51 smaller than the pressure value of the first pressure detection element 21, so that the material side plates 11 of the plate heat exchanger 10 are spaced apart to form a cleaning channel.
[0058] During cleaning, the CIP cleaning system is connected through the cleaning interface of the first material tank 70, the fourth valve 702 is opened, and at the same time, the fifth valve 703, the material pump 72, the back pressure valve, and the sixth valve 711 are opened to perform conventional cleaning of the first material tank 70, the plate heat exchanger 10, and the second material tank 71. At this time, the first valve 62, the second valve 63, and the cleaning pump 61 are also running. On the basis of conventional cleaning, the cleaning pump 61 is used to increase the flow rate and improve the cleaning effect.
[0059] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.
Claims
1. A heat exchange system, characterized in that: include: A plate heat exchanger having a material pipeline and a medium pipeline; During cleaning, the pressure of the material pipeline is greater than that of the medium pipeline, and there is a gap between the plates of the plate heat exchanger to form a cleaning channel.
2. The heat exchange system according to claim 1, characterized in that: The material pipeline includes a feed pipeline and a discharge pipeline; the medium pipeline includes a medium inlet pipeline and a medium outlet pipeline; The feed pipeline is provided with a first pressure detection element; The discharge pipe is provided with a second pressure detection element and a pressure control element in sequence according to the material flow direction, and the pressure control element is used to control the pressure of the feed pipe and the pressure of the discharge pipe to be constant; The medium inlet pipeline is provided with a regulating valve and a third pressure detection element in sequence according to the medium flow direction; The medium outlet pipeline is provided with a fourth pressure detection element; During cleaning, the pressure value of the fourth pressure detection element is smaller than the pressure value of the first pressure detection element, and the pressure value of the third pressure detection element is smaller than the pressure value of the second pressure detection element.
3. The heat exchange system according to claim 2, characterized in that: The difference between the pressure value of the fourth pressure detection element and the pressure value of the first pressure detection element is between 1.5 bar and 2.5 bar.
4. The heat exchange system according to claim 2, characterized in that: The difference between the pressure value of the third pressure detection element and the pressure value of the second pressure detection element is between 1.5 bar and 2.5 bar.
5. The heat exchange system according to claim 2, characterized in that: The heat exchange system further comprises a cleaning bypass and a cleaning pump. One end of the cleaning bypass is connected to the feed pipe, the other end of the cleaning bypass is connected to the discharge pipe, and the cleaning pump is installed on the cleaning bypass.
6. The heat exchange system according to claim 5, characterized in that: The cleaning bypass is provided with a first valve component and a second valve component, and the first valve component and the second valve component are respectively provided on two sides of the cleaning pump.
7. The heat exchange system according to claim 2, characterized in that: The heat exchange system further includes a controller, and the first pressure detection element, the second pressure detection element, the third pressure detection element, the fourth pressure detection element, and the regulating valve are electrically connected to the controller respectively.
8. The heat exchange system according to claim 7, characterized in that: The pressure control element is electrically connected to the controller.
9. The heat exchange system according to claim 2, characterized in that: The heat exchange system also includes a first material tank, a second material tank and a material pump. The first material tank is connected to the feed pipe, the second material tank is connected to the discharge pipe, the material pump is installed on the feed pipe, and the first material tank has a material inlet and a cleaning interface for connecting to a cleaning system.
10. The heat exchange system according to claim 2, characterized in that: The heat exchange system further comprises a medium tank and a medium pump, wherein the medium tank is connected to the medium inlet pipeline and the medium outlet pipeline, and the medium pump is installed on the medium inlet pipeline.