Radar water cooling system external circulation manual back-flushing cleaning device and method

Abstract

The invention discloses an external circulation manual back-flushing cleaning device and method for a radar water cooling system. The device comprises a four-way valve, a first Y-shaped filter and a second Y-shaped filter. And a P port, a T port, an A1 port and a B1 port of the four-way valve are respectively connected with an external circulation water inlet, a water return port and pipelines A and B leading to the heat exchanger. The first filter pre-filters inlet water, and the second filter collects backflushing impurities. By manually switching the position of the valve element of the four-way valve, the direction of water flowing through the heat exchanger can be directly exchanged, and switching between a normal heat exchange mode and a back-flushing cleaning mode is achieved. During backflushing, cooling water reversely flows from an outlet of the heat exchanger for strong flushing, and impurities are collected and discharged by the second filter. The device is purely mechanical in design, high in reliability and easy and convenient to operate, emergency cleaning can be completed without pipe disassembly, and continuous and stable operation of a radar system is effectively guaranteed.

Description

Technical Field

[0001] This invention relates to the field of radar equipment maintenance technology, and in particular to a purely mechanical manual backflushing cleaning device and method for cleaning the external circulation pipeline and heat exchanger of a radar water cooling system. Background Technology

[0002] Radar water-cooling systems typically use natural ambient water (seawater, river water, lake water, etc.) as the external circulating cooling medium. However, the water quality is complex and variable; the content of impurities such as silt and microorganisms can increase dramatically under specific conditions, leading to severe blockage of heat exchangers and pipes, and a sharp drop in heat exchange efficiency.

[0003] Currently, the traditional method for resolving blockages is to completely shut down the radar and have maintenance personnel disassemble the heat exchanger for physical cleaning or replace pipe joints to achieve backflushing. This method is cumbersome and time-consuming, and frequent disassembly and assembly can damage threads and seals, introducing new potential malfunctions and failing to meet the rapid response requirements of radar emergency missions.

[0004] In recent years, although technical solutions using electrically controlled valves for automatic backwashing have emerged to avoid downtime, their initial design was primarily geared towards civilian applications such as industrial and building applications. These solutions rely on external power, complex sensors, and control systems, resulting in complex structures, high costs, and difficult maintenance. Crucially, their core electronic control units struggle to meet the extreme requirements of radar stations, ships, and other specialized applications for equipment reliability, electromagnetic interference resistance, and adaptability to harsh environments. Therefore, existing electric backwashing technology has not been applied to radar water-cooling systems with extremely high reliability requirements, and the industry still lacks an emergency cleaning method that can balance "non-stop operation" with "extremely high reliability." Summary of the Invention

[0005] 1. Purpose of the invention

[0006] This invention addresses the fundamental flaw of existing technologies that require system shutdown and pipe disassembly by providing a purely mechanical, manually operated backflushing cleaning device and method. This device can quickly switch the water flow path through a simple valve operation step without completely shutting down the system or disassembling any pipes. It directly reverses the functions of the external circulation inlet and outlet in the original system, achieving powerful reverse flushing of the heat exchanger, thus efficiently and reliably solving emergency problems caused by external circulation blockage.

[0007] 2. Technical Solution

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A manual backflushing cleaning device for the external circulation of a radar water-cooling system includes a four-way valve, a first Y-type filter, and a second Y-type filter. The four ports of the four-way valve are connected via fixed sealing connections (such as threaded connections): the P port of the four-way valve connects to the external circulation inlet, its T port connects to the external circulation return port, its A1 port connects to pipe A leading to the heat exchanger inlet, and its B1 port connects to pipe B leading to the heat exchanger outlet. The first Y-type filter is installed in series on the pipeline between the external circulation inlet and the P port of the four-way valve for pre-filtering the cooling water entering the system. The second Y-type filter is installed in series on the pipeline between the T port of the four-way valve and the external circulation return port for collecting, temporarily storing, and discharging impurities in backflushing mode.

[0010] Two operating modes can be achieved by manually switching the valve core position of the four-way valve:

[0011] Normal heat exchange mode: The valve core is in the first position. The water flow path is as follows: it flows in from the external circulation inlet, passes through the first Y-type filter, the P port of the four-way valve, the A1 port of the four-way valve, and pipe A in sequence, enters the heat exchanger for forward flow heat exchange, then flows through pipe B, the B1 port of the four-way valve, the T port of the four-way valve, and the second Y-type filter, and finally exits from the external circulation return port.

[0012] Backwashing Mode: The valve core is in the second position. The water flow path is as follows: water flows in from the external circulation inlet, passes sequentially through the first Y-type filter, the P port of the four-way valve, the B1 port of the four-way valve, and pipe B, flows back into the heat exchanger outlet for powerful flushing, then flows through pipe A, the A1 port of the four-way valve, the T port of the four-way valve, and the second Y-type filter, finally exiting from the external circulation return port. In this mode, the original external circulation inlet is switched to the backwash inlet, and the original external circulation return port is switched to the backwash outlet.

[0013] 3. Beneficial effects

[0014] Compared with the prior art, the significant advantages of the present invention are:

[0015] (1) Revolutionary operating experience: It completely revolutionizes the maintenance method that requires disassembly of pipes. Without any tools, one person can manually operate the valve core drive device (such as handwheel or handle) to complete the mode switching within one minute, realizing rapid emergency handling without stopping the machine, which greatly ensures the continuous operation capability of the radar.

[0016] (2) Dual filtration protection: Innovatively set up dual Y-type filters. The first filter pre-filters the incoming water to protect the four-way valve and heat exchanger; the second filter efficiently collects impurities during backwashing, serving two purposes in one and doubling the system reliability.

[0017] (3) Functional swapping innovation: Through the simple operation of a valve body, the functions of "inlet" and "outlet" are directly swapped. The concept is extremely ingenious, simplifying the complex and solving a long-standing technical problem.

[0018] (4) Extremely high reliability: All mechanical structure, no electronic components, corrosion resistant, anti-interference, long life, extremely low failure rate, perfectly suited to the harsh working conditions of radar that are "infrequent but require high reliability for emergency response".

[0019] (5) Completely disassembly-free design: It fundamentally avoids the problems of thread stripping, sealing surface damage and coolant leakage caused by frequent disassembly and assembly of pipe fittings, and significantly reduces the maintenance cost throughout the entire life cycle. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the system structure and water flow of the device of the present invention in normal heat exchange mode;

[0022] Figure 2 This is a schematic diagram of the system structure and water flow of the device of the present invention in the backwash cleaning mode;

[0023] Figure 3 This is the schematic diagram of the system structure of the device of the present invention;

[0024] Figure 4 This is a schematic diagram of a four-way valve.

[0025] Figure 5 This is a schematic diagram of a Y-type filter structure.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Four-way valve; 2a. First Y-type filter; 2b. Second Y-type filter; 3. Heat exchanger; 4. External circulation inlet; 5. External circulation return outlet; A. Pipe A; B. Pipe B; P. Inlet of four-way valve 1; A1. Port A of four-way valve 1; B1. Port B of four-way valve 1; T. Return outlet of four-way valve 1; 101. Four-way valve core; 102. Four-way valve core drive device; 103. Four-way valve core drive shaft; 201. Y-type filter collection port; 202. Y-type filter screen. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] Please see Figure 1 and Figure 2 The core of the device of this invention is a manually operated four-way valve (1), such as a manual plug valve or a manual ball valve. Its four ports (P, A1, B1, T) are fixedly connected to external pipelines through conventional sealing connection methods in the art, such as threaded connection, flange connection or quick-connect fitting: wherein, port P is connected to the external circulation inlet (4), port T is connected to the external circulation return port (5), port A1 is connected to pipe A (A), and port B1 is connected to pipe B (B). The other ends of pipes (A) and (B) are respectively connected to the inlet and outlet of heat exchanger (3).

[0030] A first Y-type filter (2a) is installed in series between the external circulation inlet (4) and the P port of the four-way valve (1). The filter screen aperture can be selected according to the water quality (e.g., 1mm) to filter out most particulate impurities and protect the four-way valve (1) and the heat exchanger (3). A second Y-type filter (2b) is installed in series between the T port of the four-way valve (1) and the external circulation return port (5) to collect and temporarily store the impurities flushed out of the heat exchanger (3) in backwash mode, and can be discharged periodically through its drain port.

[0031] During normal operation, the valve core drive device (such as a handwheel, handle, or lever) of the manual four-way valve (1) is in the "normal" position (first working position), and the water flow is as follows: Figure 1 The water flows in the direction shown. When the system pressure drop increases and a blockage is detected, manually operate the valve core drive device to switch it to the "backflush" position (second position), and the water flow immediately changes to... Figure 2 The heat exchanger (3) is flushed in the reverse direction as shown. The flushed impurities are captured by the second Y-type filter (2b), and the cleaned water is discharged. After flushing for a period of time (e.g., 1-2 minutes), the valve core drive can be manually operated to switch it back to the "normal" position to resume operation. Throughout the process, the radar system can maintain normal operation, completely avoiding the downtime and disassembly required in traditional maintenance methods. No parts need to be disassembled, making it safe, efficient, and reliable.

[0032] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A manual backwashing cleaning device for the external circulation of a radar water-cooling system, characterized in that: It includes a four-way valve (1), a first Y-type filter (2a), and a second Y-type filter (2b); the P port of the four-way valve (1) is connected to the external circulation inlet (4), its T port is connected to the external circulation return port (5), its A1 port is connected to the pipe A (A) leading to the inlet of the heat exchanger (3), and its B1 port is connected to the pipe B (B) leading to the outlet of the heat exchanger (3); the first Y-type filter (2a) is installed in series on the pipeline between the external circulation inlet (4) and the P port of the four-way valve (1); the second Y-type filter (2b) is installed in series on the pipeline between the T port of the four-way valve (1) and the external circulation return port (5); by manually switching the valve core position of the four-way valve (1), the direction of water flow through the heat exchanger (3) can be changed, realizing the switching between the two working modes of normal heat exchange and backwash cleaning.

2. The apparatus according to claim 1, characterized in that: The four-way valve (1) is connected to each pipeline by threaded connection, flange connection or quick-connect fitting.

3. The apparatus according to claim 1, characterized in that: The water flow path under the normal heat exchange mode is as follows: the water flows through the external circulation inlet (4), the first Y-type filter (2a), the P port of the four-way valve (1), the A1 port of the four-way valve (1), the pipe A (A), the heat exchanger (3), the pipe B (B), the B1 port of the four-way valve (1), the T port of the four-way valve (1), the second Y-type filter (2b), and finally flows out from the external circulation return port (5).

4. The apparatus according to claim 1, characterized in that: The water flow path under the backwash cleaning mode is as follows: the water flows sequentially through the external circulation inlet (4), the first Y-type filter (2a), the P port of the four-way valve (1), the B1 port of the four-way valve (1), the pipe B (B), the heat exchanger (3), the pipe A (A), the A1 port of the four-way valve (1), the T port of the four-way valve (1), the second Y-type filter (2b), and finally flows out from the external circulation return port (5).

5. A backwashing cleaning method based on the device described in claim 1, characterized in that, The method is a purely manual mechanical operation, including the following steps: In normal heat exchange mode, keep the valve core of the four-way valve (1) in the first position so that the water flows from port P to port A1 and from port B1 to port T. When backflushing is required, without stopping the external circulating water flow and without disassembling any pipeline, manually operate the four-way valve (1) to switch its valve core to the second position so that the water flows from port P to port B1 and from port A1 to port T, so that the cooling water flows in reverse through the heat exchanger (3) to flush it. After flushing, manually switch the valve core of the four-way valve (1) back to the first position to restore normal heat exchange mode.

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