Blockage on-line monitoring and self-cleaning system for heat exchanger of heat exchange station

Abstract

The utility model relates to a heat exchange station heat exchanger blockage online monitoring and self-cleaning system and method, the system comprises a controller, a primary dirt separator, a secondary dirt separator and a pressure monitoring assembly, the pressure monitoring assembly can obtain pipeline pressure of a primary water supply pipe, a primary water return pipe, a secondary water supply pipe and a secondary water return pipe close to the heat exchanger side; the primary dirt separator is mounted on a primary water supply pipe, and the secondary dirt separator is mounted on a secondary water return pipe; the pressure monitoring assembly is electrically connected with the controller, and the controller can control the primary dirt separator and the secondary dirt separator to work; according to the on-line monitoring and self-cleaning system and method for the blockage of the heat exchanger of the heat exchange station, the running state of the heat exchanger can be monitored in real time, the blockage problem can be found and processed in time, the complexity and uncertainty of manual inspection are avoided, the heat exchange efficiency is improved, the energy consumption and the maintenance cost are reduced, and remarkable economic and social benefits are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of hot water treatment, and in particular relates to an online monitoring and self-cleaning system for blockage of a heat exchanger in a heat exchange station. Background Art

[0002] With the diversification of energy utilization and the improvement of environmental protection requirements, heat exchange stations, as important equipment for heat energy conversion and transfer, play a key role in heating, air conditioning, chemical and other industries. However, heat exchangers are prone to blockage during long-term operation, resulting in reduced heat transfer efficiency, increased energy consumption, and even affecting the stable operation of the entire system. Traditional cleaning methods mostly rely on manual operations, which are inefficient and costly. Therefore, developing a system and method that can monitor the blockage status of heat exchangers in real time and automatically clean them is of great significance to improving the operating efficiency of heat exchange stations and reducing maintenance costs. Summary of the invention

[0003] The utility model solves the technical problem by adopting the following technical solutions:

[0004] Heat exchange station heat exchanger blockage online monitoring and self-cleaning system, the system includes a controller, a primary decontaminant, a secondary decontaminant, and a pressure monitoring component, the pressure monitoring component can obtain the pipe pressure of the primary water supply pipe, the primary water return pipe, the secondary water supply pipe, and the secondary water return pipe close to the heat exchanger side;

[0005] The primary dirt remover is installed on the primary water supply pipe, and the secondary dirt remover is installed on the secondary water return pipe;

[0006] The pressure monitoring component is electrically connected to the controller, and the controller can control the operation of the primary and secondary decontaminators.

[0007] Furthermore, the pressure monitoring component includes a first pressure sensor, a second pressure sensor, a third pressure sensor, and a fourth pressure sensor, and the first pressure sensor, the second pressure sensor, the third pressure sensor, and the fourth pressure sensor are respectively installed on the primary water supply pipe, the primary water return pipe, the secondary water supply pipe, and the secondary water return pipe.

[0008] Furthermore, it also includes a first electric ball valve, which is installed on the primary water supply pipe and located upstream of the first pressure sensor, and the first electric ball valve is electrically connected to the controller.

[0009] Furthermore, it also includes a second electric ball valve, which is installed on the secondary return pipe and located upstream of the fourth pressure sensor, and the second electric ball valve is electrically connected to the controller.

[0010] Furthermore, a third electric ball valve is installed on the primary sewage discharge pipe of the primary sewage remover, and the third electric ball valve is electrically connected to the controller.

[0011] Furthermore, a fourth electric ball valve is installed on the secondary sewage discharge pipe of the secondary sewage remover, and the fourth electric ball valve is electrically connected to the controller.

[0012] Based on the online monitoring of heat exchanger blockage in the heat exchange station, the online monitoring of the self-cleaning system, and the self-cleaning method, the method comprises the following steps:

[0013] S1, the controller monitors the pressure difference between the inlet and outlet of the primary or secondary side of the heat exchanger;

[0014] S2. When the controller detects that the pressure difference between the inlet and outlet of the primary side of the heat exchanger is greater than the set threshold, the controller controls the first electric ball valve to close and controls the primary dirt remover to work; when the controller detects that the pressure difference between the inlet and outlet of the secondary side of the heat exchanger is greater than the set threshold, the controller controls the second electric ball valve to close and controls the secondary dirt remover to work; if the pressure difference between the inlet and outlet of the primary side or the secondary side of the heat exchanger is less than the set threshold, the heat exchange station is kept in normal working state;

[0015] S3. Repeat the above steps S1-S2 in sequence to perform real-time monitoring and self-cleaning of the heat exchanger.

[0016] Furthermore, when the primary dirt remover or the secondary dirt remover is working, the electric ball valve on the sewage pipe is in an open state.

[0017] The advantages and positive effects of the utility model are:

[0018] The utility model discloses a heat exchange station heat exchanger blockage online monitoring and self-cleaning system and method, which can monitor the operating status of the heat exchanger in real time, promptly discover and deal with blockage problems, avoid the tediousness and uncertainty of manual inspections, improve heat exchange efficiency, reduce energy consumption and maintenance costs, and have significant economic and social benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The technical solution of the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments, but it should be understood that these drawings are designed only for the purpose of explanation and are not intended to limit the scope of the utility model. In addition, unless otherwise specified, these drawings are only intended to conceptually illustrate the structural configurations described herein and are not necessarily drawn to scale.

[0020] Figure 1 It is a structural schematic diagram of an online monitoring and self-cleaning system for heat exchanger blockage in a heat exchange station provided by an embodiment of the utility model. DETAILED DESCRIPTION

[0021] First of all, it should be noted that the specific structure, features and advantages of the present invention will be specifically described below by way of example, but all descriptions are only for illustration and should not be understood as limiting the present invention in any way. In addition, any single technical feature described or implied in the embodiments mentioned herein, or any single technical feature displayed or implied in the drawings, can still be combined or deleted between these technical features (or their equivalents) to obtain more other embodiments of the present invention that may not be directly mentioned in this document. In addition, in order to simplify the drawings, the same or similar technical features may be marked in only one place in the same drawing.

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0023] Example 1

[0024] like Figure 1 As shown, the heat exchange station heat exchanger blockage online monitoring and self-cleaning system provided in this embodiment includes a controller A, a primary dirt remover 1, a secondary dirt remover 2, and a pressure monitoring component. The pressure monitoring component can obtain the pipe pressures of the primary water supply pipe M, the primary water return pipe N, the secondary water supply pipe O, and the secondary water return pipe P close to the heat exchanger side;

[0025] The primary dirt remover is installed on the primary water supply pipe, and the secondary dirt remover is installed on the secondary water return pipe;

[0026] The pressure monitoring component is electrically connected to the controller, and the controller can control the operation of the primary and secondary decontaminators.

[0027] Specifically, the pressure monitoring component includes a first pressure sensor 3, a second pressure sensor 4, a third pressure sensor 5, and a fourth pressure sensor 6. The first pressure sensor, the second pressure sensor, the third pressure sensor, and the fourth pressure sensor are respectively installed on the primary water supply pipe, the primary water return pipe, the secondary water supply pipe, and the secondary water return pipe; it should be noted that the first pressure sensor, the second pressure sensor, the third pressure sensor, and the fourth pressure sensor are respectively installed on the primary water supply pipe, the primary water return pipe, the secondary water supply pipe, and the secondary water return pipe near the heat exchanger.

[0028] It also includes a first electric ball valve 7, which is installed on the primary water supply pipe and located upstream of the first pressure sensor, and is electrically connected to the controller; it also includes a second electric ball valve 8, which is installed on the secondary water return pipe and located upstream of the fourth pressure sensor, and is electrically connected to the controller; it should be noted that the primary dirt remover is located between the first electric ball valve 7 and the first pressure sensor 3, and the secondary dirt remover is located between the second electric ball valve 8 and the fourth pressure sensor 6;

[0029] In addition, a third electric ball valve 9 is installed on the primary sewage pipe of the primary sewage remover, and the third electric ball valve is electrically connected to the controller; a fourth electric ball valve 10 is installed on the secondary sewage pipe of the secondary sewage remover, and the fourth electric ball valve is electrically connected to the controller.

[0030] Based on the online monitoring of heat exchanger blockage in the heat exchange station, the online monitoring of the self-cleaning system, and the self-cleaning method, the method comprises the following steps:

[0031] S1, the controller monitors the pressure difference between the inlet and outlet of the primary or secondary side of the heat exchanger;

[0032] S2. When the controller detects that the pressure difference between the inlet and outlet of the primary side of the heat exchanger is greater than the set threshold, the controller controls the first electric ball valve to close and controls the primary dirt remover to work; when the controller detects that the pressure difference between the inlet and outlet of the secondary side of the heat exchanger is greater than the set threshold, the controller controls the second electric ball valve to close and controls the secondary dirt remover to work; if the pressure difference between the inlet and outlet of the primary side or the secondary side of the heat exchanger is less than the set threshold, the heat exchange station is kept in normal working state;

[0033] S3. Repeat the above steps S1-S2 in sequence to perform real-time monitoring and self-cleaning of the heat exchanger.

[0034] Of course, in order to clear the blockage, when the primary or secondary dirt remover is working, the electric ball valve on the sewage pipe is in an open state.

[0035] Specifically, in this embodiment, as an example, when the controller (GT-7M can be used) detects that the difference between the first pressure sensor 3 and the second pressure sensor 4 is greater than or equal to 5 bar, the controller controls the first electric ball valve 7 to close and the third electric ball valve 9 to open, and controls the primary decontaminant to work, and backwashes the primary side of the heat exchanger to clear the blockage; when the controller detects that the difference between the first pressure sensor 3 and the second pressure sensor 4 is less than 5 bar, the heat exchange station maintains a normal working state; when the controller detects that the difference between the third pressure sensor 5 and the fourth pressure sensor 6 is greater than or equal to 5 bar, the controller controls the second electric ball valve 8 to close and the fourth electric ball valve 10 to open, and controls the secondary decontaminant to work, and backwashes the secondary side of the heat exchanger to clear the blockage; when the controller detects that the difference between the third pressure sensor 5 and the fourth pressure sensor 6 is less than 5 bar, the heat exchange station maintains a normal working state.

[0036] The above embodiments describe the present invention in detail, but the above contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of application of the present invention shall still fall within the scope of the patent coverage of the present invention.

Claims

1. Heat exchange station heat exchanger blockage online monitoring and self-cleaning system, characterized by: The system includes a controller, a primary dirt remover, a secondary dirt remover, and a pressure monitoring component, wherein the pressure monitoring component can obtain the pipe pressures of the primary water supply pipe, the primary water return pipe, the secondary water supply pipe, and the secondary water return pipe close to the heat exchanger side; The primary dirt remover is installed on the primary water supply pipe, and the secondary dirt remover is installed on the secondary water return pipe; The pressure monitoring component is electrically connected to the controller, and the controller can control the operation of the primary and secondary decontaminants.

2. The heat exchange station heat exchanger blockage online monitoring and self-cleaning system according to claim 1 is characterized by: The pressure monitoring component includes a first pressure sensor, a second pressure sensor, a third pressure sensor, and a fourth pressure sensor, and the first pressure sensor, the second pressure sensor, the third pressure sensor, and the fourth pressure sensor are respectively installed on the primary water supply pipe, the primary water return pipe, the secondary water supply pipe, and the secondary water return pipe.

3. The heat exchange station heat exchanger blockage online monitoring and self-cleaning system according to claim 2 is characterized by: It also includes a first electric ball valve, which is installed on the primary water supply pipe and located upstream of the first pressure sensor, and the first electric ball valve is electrically connected to the controller.

4. The heat exchange station heat exchanger blockage online monitoring and self-cleaning system according to claim 2 is characterized by: It also includes a second electric ball valve, which is installed on the secondary return pipe and located upstream of the fourth pressure sensor. The second electric ball valve is electrically connected to the controller.

5. The heat exchange station heat exchanger blockage online monitoring and self-cleaning system according to claim 1 is characterized by: A third electric ball valve is installed on the primary sewage discharge pipe of the primary sewage remover, and the third electric ball valve is electrically connected to the controller.

6. The heat exchange station heat exchanger blockage online monitoring and self-cleaning system according to claim 1 is characterized by: A fourth electric ball valve is installed on the secondary sewage discharge pipe of the secondary sewage remover, and the fourth electric ball valve is electrically connected to the controller.

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