Decontamination chain heat exchanger
By setting up monitoring devices and dosing devices in the heat exchanger, real-time monitoring and automatic dosing and descaling are solved, the efficiency reduction caused by the heat exchanger is solved, and the descaling treatment without disassembling the equipment and no stopping is achieved, which improves the continuity and efficiency of equipment operation.
Patent Information
- Application Number
- CN202422743064.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-11-11
AI Technical Summary
Existing heat exchangers are prone to scale after operating for a period of time, resulting in a decrease in heat exchange effect. The existing solutions require dismantling the equipment or shutting down the machine to manually descaling, which affects the operating duration and timeliness of the equipment.
A chain heat exchanger for decontamination is designed, equipped with monitoring devices and dosing devices, and the heat exchanger parameters are monitored in real time through sensors, and the dosing and discharging of waste is automatically controlled to achieve descaling without disassembling the equipment and without stopping the machine.
It realizes automatic and timely removal of scale without affecting the operation of the equipment, improving the heat exchange efficiency and the continuity of the operation of the equipment.
Smart Images
Figure CN223295290U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heat exchangers, in particular to a decontamination interlocking heat exchanger. Background Art
[0002] After a heat exchanger has been running for a period of time, scaling problems often occur. The existing solution is to dismantle the heat exchanger for manual descaling or manually add descaling agents.
[0003] Manual descaling requires manual dismantling of the heat exchanger, which delays the equipment's operation. Manual descaling does not require dismantling the heat exchanger, but it does require downtime for descaling. Utility Model Content
[0004] In response to the above problems, the present application provides a decontamination interlocking heat exchanger that can descale the heat exchanger without disassembling the equipment or stopping the machine.
[0005] The technical solution adopted by the utility model to solve its technical problems is:
[0006] A decontamination interlocking heat exchanger comprises a shell, the interior space of the shell comprising a water outlet cavity, a heat exchange cavity and a water inlet cavity, the shell being provided with a steam inlet, a condensed water outlet, a water inlet and a water outlet, the steam inlet and the condensed water outlet being in communication with the heat exchange cavity, the water inlet being in communication with the water inlet cavity, and the water outlet being in communication with the water outlet cavity;
[0007] It also includes monitoring devices and dosing devices;
[0008] The monitoring device includes a first temperature sensor for detecting the outlet water temperature of the pipe side;
[0009] The housing is provided with a dosing port connected to the water inlet chamber, the dosing outlet of the dosing device is connected to the dosing port via a pipeline, and the pipeline is provided with a first control valve;
[0010] The shell is provided with a sewage outlet communicated with the water outlet cavity, and the sewage outlet is provided with a sewage valve.
[0011] Furthermore, the first temperature sensor is arranged at the water outlet, and the dosing port is arranged on the water inlet.
[0012] Furthermore, the monitoring device also includes a first pressure sensor for detecting the outlet water pressure on the pipe side.
[0013] Furthermore, the first pressure sensor is arranged at the water outlet.
[0014] Furthermore, the monitoring device also includes a second temperature sensor for detecting the pipe-side inlet water temperature.
[0015] Furthermore, the second temperature sensor is arranged at the water inlet.
[0016] Furthermore, the monitoring device also includes a second pressure sensor for detecting the water inlet pressure on the pipe side.
[0017] Furthermore, the second pressure sensor is arranged at the water inlet.
[0018] Furthermore, a second control valve for controlling the flow of the heat exchange medium is provided at the water inlet or the water outlet.
[0019] Furthermore, a sampling port is provided at the water outlet.
[0020] The beneficial effects of the utility model are:
[0021] The embodiment of the present application provides a decontamination interlocking heat exchanger which descales the heat exchanger by setting a monitoring device and a dosing device, and controlling the opening of the dosing device through the parameter signal fed back by the monitoring device. This process does not require disassembly of the heat exchanger or shutdown, and will not affect the operating period of the equipment.
[0022] In addition, traditional methods, whether removing the heat exchanger for manual descaling or manually adding descaling agents, require the equipment to run for a fixed period before descaling, which lacks timeliness. The descaling interlocking heat exchanger provided in this application uses parameter signals fed back by a monitoring device to control the activation of the dosing device, effectively ensuring the timeliness of descaling. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 A structural schematic diagram of a decontamination interlocking heat exchanger provided in an embodiment of the present application;
[0024] Figure 2 A schematic diagram of the internal structure of a decontamination interlocking heat exchanger provided in an embodiment of the present application.
[0025] In the figure: 11, shell; 111, steam inlet; 112, condensate outlet; 113, water inlet; 114, water outlet; 115, sewage outlet; 116, dosing port; 117, sampling port; 12, end plate; 13, tube bundle; 14, baffle; 151, water outlet chamber; 152, heat exchange chamber; 153, water inlet chamber;
[0026] 21. First temperature sensor; 22. First pressure sensor; 23. Second temperature sensor; 24. Second pressure sensor;
[0027] 3. Dosing device; 31. Drug outlet;
[0028] 4. Pipeline; 41. First control valve. DETAILED DESCRIPTION
[0029] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be described in detail below in conjunction with the drawings in the embodiments of this application. The described embodiments are only part of the embodiments of this application, not all of the embodiments. All other embodiments obtained by those skilled in the art without creative work based on the embodiments of this application should fall within the scope of protection of this application.
[0030] Example 1
[0031] like Figure 2 As shown, a dirt removal interlocking heat exchanger includes a shell 11, with end plates 12 disposed at each end of the shell 11. The two end plates 12 axially divide the interior space of the shell 11 into a water outlet chamber 151, a heat exchange chamber 152, and a water inlet chamber 153. The heat exchange chamber 152 is provided with a tube bundle 13 consisting of multiple heat exchange tubes and a baffle 14 for securing the tube bundle 13. One end of the heat exchange tube passes through the end plate 12 on one side of the water inlet chamber 153 to communicate with the water inlet chamber 153, while the other end of the heat exchange tube passes through the end plate 12 on the other side of the water outlet chamber 151 to communicate with the water outlet chamber 151.
[0032] The shell 11 is provided with a steam inlet 111 at the upper end thereof, which is in communication with the heat exchange chamber 152. The shell 11 is provided with a condensate outlet 112 at the lower end thereof, which is in communication with the heat exchange chamber 152. As a specific embodiment, in this embodiment, the upper end of the shell 11 is provided with two steam inlets 111, and the lower end of the shell 11 is provided with two condensate outlets 112.
[0033] The housing 11 is provided with a water inlet 113 communicating with the water inlet chamber 153 and a water outlet 114 communicating with the water outlet chamber 151. As a specific embodiment, the water inlet 113 in this embodiment is located at the bottom of the housing 11, and the water outlet 114 is located at the top of the housing 11.
[0034] The bottom of the housing 11 is provided with a sewage outlet 115 that is in communication with the water outlet cavity 151 , and the sewage outlet 115 is provided with a sewage valve (not shown in the figure).
[0035] During normal heat exchange, the drain valve is closed, and the heat exchange medium flows from the water inlet 113 into the water inlet chamber 153, flows through the heat exchange tubes to the water outlet chamber 151, and finally flows out through the water outlet 114. At the same time, high-temperature steam flows in from the steam inlet 111 and exchanges heat with the heat exchange tubes in the heat exchange chamber 152. The heat exchange medium absorbs the heat from the high-temperature steam, raising its temperature. After releasing heat, the steam condenses into condensed water, which eventually flows out through the condensed water outlet 112.
[0036] like Figure 1 As shown, a decontamination interlocking heat exchanger further includes a monitoring device, a dosing device 3 and a controller (not shown in the figure). The controller can control the opening of the dosing device 3 according to the signal fed back by the monitoring device.
[0037] The monitoring device includes a first temperature sensor 21 for detecting the outlet water temperature of the pipe side. As a specific implementation, the first temperature sensor 21 in this embodiment is disposed at the water outlet 114 .
[0038] The housing 11 is provided with a dosing port 116 connected to the water inlet chamber 153, and the dosing port 31 of the dosing device 3 is connected to the dosing port 116 via a pipeline 4. The pipeline 4 is provided with a first control valve 41 for controlling the on-off of the pipeline 4.
[0039] As a specific implementation, the drug adding port 116 in this embodiment is provided on the water inlet 113 .
[0040] When the temperature of the water outlet 114 decreases while the equipment operating conditions remain unchanged, it indicates poor heat exchange performance. This may be due to scaling, which reduces the thermal conductivity of the heat exchange tubes, resulting in poor heat exchange performance. Therefore, when the temperature detected by the first temperature sensor 21 is lower than the set value under the corresponding operating conditions, the controller opens the first control valve 41, thereby injecting descaling agent into the heat exchanger through the dosing device 3, and at the same time, opens the drain valve.
[0041] Furthermore, the monitoring device further includes a first pressure sensor 22 for detecting the outlet water pressure of the pipe side. As a specific implementation, the first pressure sensor 22 in this embodiment is disposed at the outlet 114.
[0042] When the pressure at water outlet 114 decreases while the equipment operating conditions remain unchanged, it indicates that the flow resistance of the heat exchange medium has increased, resulting in increased pressure loss. It can be inferred that scaling is causing the increased flow resistance in the heat exchange tubes. Therefore, when the temperature detected by the first temperature sensor 21 is lower than the set value for the corresponding operating conditions, and the pressure detected by the first pressure sensor 22 is also lower than the set value for the corresponding operating conditions, the controller opens the first control valve 41, thereby injecting descaling agent into the heat exchanger through the dosing device 3, and simultaneously opens the drain valve.
[0043] The reason for providing the first pressure sensor 22 is that poor heat exchange can be caused by a variety of factors, including problems with the heat source (i.e., steam). Therefore, determining whether scaling has occurred solely by temperature can lead to misjudgments. The provision of the first pressure sensor 22 allows the feedback from the first pressure sensor 22 and the first temperature sensor 21 to verify each other, thereby reducing misjudgments.
[0044] Furthermore, in order to improve the accuracy of the monitoring results and reduce the probability of misjudgment, the monitoring device also includes a second temperature sensor 23 for detecting the pipe-side inlet water temperature. As a specific embodiment, the second temperature sensor 23 in this embodiment is disposed at the water inlet 113.
[0045] When the temperature difference detected by the first temperature sensor 21 and the second temperature sensor 23 is less than the set value, and the pressure detected by the first pressure sensor 22 is also lower than the set value under the corresponding working condition, the first control valve 41 is opened by the controller, thereby injecting the descaling agent into the heat exchanger through the dosing device 3, and at the same time, the drain valve is opened.
[0046] Furthermore, in order to further improve the accuracy of the monitoring results and reduce the probability of misjudgment, the monitoring device also includes a second pressure sensor 24 for detecting the water inlet pressure on the pipe side. As a specific embodiment, the second pressure sensor 24 in this embodiment is disposed at the water inlet 113.
[0047] When the temperature difference detected by the first temperature sensor 21 and the second temperature sensor 23 is less than the set value, and the pressure difference detected by the first pressure sensor 22 and the second pressure sensor 24 is less than the set value, the first control valve 41 is opened by the controller, thereby injecting the descaling agent into the heat exchanger through the dosing device 3, and at the same time, the drain valve is opened.
[0048] Furthermore, a second control valve (not shown in the figure) for controlling the flow of the heat exchange medium is provided at the water inlet 113 or the water outlet 114. As a specific implementation, the second control valve in this embodiment is provided at the water inlet 113.
[0049] When the first control valve 41 is open, the controller controls the second control valve to reduce the flow of the heat exchange medium, thereby extending the time the agent remains in the heat exchange tube and allowing it to fully function. When the preset descaling time is reached, the controller controls the second control valve to increase the flow of the heat exchange medium, thereby quickly discharging the reacted agent and impurities.
[0050] Furthermore, a sampling port 117 is provided at the water outlet 114. When the signal fed back by the monitoring device is abnormal, a portion of the fluid can be manually removed for analysis to determine the scale condition of the heat exchanger. The provision of the sampling port 117 can further improve the accuracy of the judgment result.
[0051] Example 2
[0052] The first temperature sensor 21 and the first pressure sensor 22 are both provided on the housing 11 and are used to detect the temperature and pressure of the water outlet chamber 151. The second temperature sensor 23 and the second pressure sensor 24 are both provided on the housing 11 and are used to detect the temperature and pressure of the water inlet chamber 153. The remaining structure is the same as that of the first embodiment.
[0053] Example 3
[0054] The monitoring device includes a first temperature sensor 21 and a second temperature sensor 23. When the temperature difference detected by the first temperature sensor 21 and the second temperature sensor 23 is less than a set value, the controller opens the first control valve 41, thereby injecting descaling agent into the heat exchanger through the dosing device 3. At the same time, the drain valve is opened. The remaining structure is the same as that of the first embodiment.
[0055] Example 4
[0056] The monitoring device includes a first temperature sensor 21, a first pressure sensor 22, and a second pressure sensor 24. When the temperature detected by the first temperature sensor 21 is lower than the set value under the corresponding operating conditions, and the pressure difference detected by the first pressure sensor 22 and the second pressure sensor 24 is lower than the set value, the controller opens the first control valve 41, thereby injecting descaling agent into the heat exchanger through the dosing device 3, and at the same time, opens the drain valve. The remaining structure is the same as that of the first embodiment.
[0057] Other embodiments obtained by those skilled in the art by combining, splitting, reorganizing, etc. the embodiments provided in this application do not exceed the scope of protection of this application.
[0058] The above specific implementation methods provide a detailed description of the purpose, technical solutions and beneficial effects of the embodiments of the present application. The above is only a specific implementation method of the embodiments of the present application and is not intended to limit the scope of protection of the embodiments of the present application. That is, any modifications, equivalent replacements, improvements, etc. made on the basis of the embodiments of the present application should be included in the scope of protection of the embodiments of the present application.
Claims
1. A decontamination interlocking heat exchanger, comprising a shell (11), wherein the interior space of the shell (11) comprises a water outlet chamber (151), a heat exchange chamber (152) and a water inlet chamber (153), wherein the shell (11) is provided with a steam inlet (111), a condensed water outlet (112), a water inlet (113) and a water outlet (114), wherein the steam inlet (111) and the condensed water outlet (112) are connected to the heat exchange chamber (152), the water inlet (113) is connected to the water inlet chamber (153), and the water outlet (114) is connected to the water outlet chamber (151), characterized in that: It also includes a monitoring device and a dosing device (3); The monitoring device comprises a first temperature sensor (21) for detecting the outlet water temperature of the pipe side; The housing (11) is provided with a dosing port (116) connected to the water inlet chamber (153); the dosing port (31) of the dosing device (3) is connected to the dosing port (116) via a pipeline (4); and the pipeline (4) is provided with a first control valve (41); The housing (11) is provided with a sewage outlet (115) connected to the water outlet chamber (151), and a sewage valve is provided on the sewage outlet (115).
2. The decontamination interlocking heat exchanger according to claim 1, characterized in that: The first temperature sensor (21) is arranged at the water outlet (114), and the drug adding port (116) is arranged on the water inlet (113).
3. The decontamination interlocking heat exchanger according to claim 1, characterized in that: The monitoring device further comprises a first pressure sensor (22) for detecting the outlet water pressure on the pipe side.
4. The decontamination interlocking heat exchanger according to claim 3, characterized in that: The first pressure sensor (22) is arranged at the water outlet (114).
5. The decontamination interlocking heat exchanger according to claim 1 or 3, characterized in that: The monitoring device further comprises a second temperature sensor (23) for detecting the pipe-side inlet water temperature.
6. The decontamination interlocking heat exchanger according to claim 5, characterized in that: The second temperature sensor (23) is arranged at the water inlet (113).
7. The decontamination interlocking heat exchanger according to claim 5, characterized in that: The monitoring device further comprises a second pressure sensor (24) for detecting the water inlet pressure on the pipe side.
8. The decontamination interlocking heat exchanger according to claim 7, characterized in that: The second pressure sensor (24) is arranged at the water inlet (113).
9. The decontamination interlocking heat exchanger according to claim 1, characterized in that: A second control valve for controlling the flow of the heat exchange medium is provided at the water inlet (113) or the water outlet (114).
10. The decontamination interlocking heat exchanger according to claim 1, characterized in that: A sampling port (117) is provided at the water outlet (114).