Leakage detection device for plate-type oil cooler

Abstract

The utility model relates to the technical field of heat exchanger leakage detection, and discloses a leakage detection device for a plate-type oil cooler, which comprises a plate-type oil cooler body and a leakage detection unit, the plate-type oil cooler body comprises an oil side emptying pipe and an oil side feeding pipe which are communicated with each other, and the leakage detection unit comprises an air inlet pipe. The air inlet pipe is communicated with the oil side feeding pipe through the oil side emptying pipe and can feed air into the plate type oil cooler body through the oil side feeding pipe. Compressed air is used for replacing traditional oil and water media for leakage detection, the trouble that a large amount of oil is discharged after leakage points are found is avoided, time is saved, and the labor intensity of workers is reduced. And compressed air is convenient to intake, a pressure environment can be quickly established, and subsequent leak detection operation is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger leak detection technology, specifically to a leak detection device for plate oil coolers. Background Technology

[0002] Plate coolers are widely used in industrial cooling systems to exchange heat and maintain normal system operation. However, in practical applications, the sealing performance of plate coolers is crucial; even a minor leak can lead to equipment failure or reduced efficiency. Therefore, leak detection is a vital step in ensuring their proper functioning. Traditionally, leak detection after reassembly of plate coolers is performed using a water-side inlet and an oil-side inlet method. Specifically, water is introduced to the water side, and heat transfer oil is injected into the oil side, then the presence of leaks is observed. The drawback of this method is that if a leak is found, it takes considerable time to drain the large amount of oil from the oil side, and the oil-covered plates are relatively difficult to reassemble. If leak detection fails after several reassemblies, it consumes a significant amount of time, greatly increases the workload of workers, and raises safety risks during operation. Utility Model Content

[0003] The present invention aims to provide a leak detection device for plate-type oil coolers, so as to reduce the labor intensity during the leak detection process.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a leak detection device for a plate-type oil cooler, comprising a plate-type oil cooler body and a leak detection unit. The plate-type oil cooler body includes an oil-side vent pipe and an oil-side feed pipe that are interconnected. The leak detection unit includes an air inlet pipe, which is connected to the oil-side vent pipe and the oil-side feed pipe and can introduce air into the plate-type oil cooler body through the oil-side feed pipe.

[0005] The benefits of this solution are as follows: using compressed air instead of traditional oil and water for leak detection avoids the hassle of draining large amounts of oil after a leak is found, saves time, and reduces the workload of staff; moreover, compressed air is easy to supply and can quickly establish a pressure environment, which facilitates subsequent leak detection operations.

[0006] Furthermore, the leak detection unit also includes soapy water and a brush. The soapy water is used to coat the surface of the object to be checked for leaks, and the brush is used to dip into the soapy water and apply it to the surface of the object to be checked for leaks.

[0007] Beneficial effects: The combination of soapy water and a brush provides a simple and effective method for leak detection. Leaks can be identified by observing whether bubbles appear where soapy water has been applied. It is easy to operate, low in cost, and can accurately locate tiny leaks, thus improving the accuracy of leak detection.

[0008] Furthermore, the plate-type oil cooler body also includes a water-side feed pipe and a water-side vent pipe. The air inlet pipe is connected to the water-side feed pipe through the water-side vent pipe and can also allow air to enter the plate-type oil cooler body through the water-side feed pipe. This allows the device to check for leaks not only on the oil side but also on the water side, broadening the device's application range and enabling comprehensive testing of both sides of the plate-type oil cooler, ensuring the overall sealing of the equipment.

[0009] Furthermore, the leak detection unit also includes a pressure reducing valve, which is located between the compressed air and the intake pipe. The pressure reducing valve can regulate the compressed air pressure entering the plate oil cooler, preventing excessive pressure from damaging the oil cooler and ensuring the safety of the leak detection process. At the same time, the pressure can be adjusted according to actual needs to improve the accuracy and reliability of leak detection.

[0010] Furthermore, it also includes a valve assembly for controlling flow rates. This assembly includes an oil-side inlet valve located on the oil-side inlet pipe and controlling the flow rate within it; a water-side inlet valve located on the water-side inlet pipe and controlling the flow rate within it; an oil-side outlet valve located on the oil-side outlet pipe and controlling the flow rate within it; a water-side outlet valve located on the water-side outlet pipe and controlling the flow rate within it; an oil-side vent valve located on the oil-side vent pipe and controlling the flow rate within it; and a water-side vent valve located on the water-side vent pipe and controlling the flow rate within it. Through precise control of the flow rates in different pipelines using these valves, operations such as discharging, injecting, and regulating the medium within the oil cooler can be achieved. This makes the leak detection process more flexible and efficient, allowing operators to easily adjust pipeline connections and flow rates according to the leak detection procedures.

[0011] Furthermore, a compressed air pressure gauge is installed on the intake pipe to display the intake pipe pressure. Operators can intuitively understand the air pressure in the intake pipe in real time, which facilitates the judgment of whether the internal pressure of the oil cooler meets the requirements, and allows for observation of pressure changes during leak detection, timely detection of problems such as continuous leakage, providing data support for leak detection work and improving the efficiency and accuracy of leak detection. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0013] Figure 2 This is a structural schematic diagram of Embodiment 2 of the present invention. Detailed Implementation

[0014] The following detailed description illustrates the specific implementation method:

[0015] The reference numerals in the accompanying drawings include: heat exchange plate 11, oil-side feed pipe 121, oil-side discharge pipe 122, water-side feed pipe 131, water-side discharge pipe 132, vent pipe 14, air inlet pipe 21, compressed air pressure gauge 221, oil-side feed pressure gauge 222, water-side feed pressure gauge 223, water-side vent valve 231, oil-side vent valve 232, oil-side feed valve 233, water-side feed valve 234, water discharge valve 235, oil-side discharge valve 236, and pressure relief valve 237.

[0016] Example 1

[0017] Example 1 is basically as shown in the appendix. Figure 1 As shown, Figure 1 The leak detection device for a plate oil cooler shown includes a heat exchange assembly, a leak detection assembly, and a valve assembly. The heat exchange assembly includes an oil cooler body. An oil-side inlet pipe 121, an oil-side outlet pipe 122, a water-side inlet pipe 131, and a water-side outlet pipe 132 are connected to the oil cooler body via flanges. An oil-side drain pipe 14 is connected to the oil-side inlet pipe 121 via a flange, and a water-side drain pipe 14 is connected to the water-side inlet pipe 131 via a flange.

[0018] The leak detection assembly includes an air inlet pipe 21, a pressure reducing valve, a compressed air pressure gauge 221, soapy water, and a brush, such as... Figure 1 As shown, the left end of the intake pipe 21 is connected to compressed air through a pressure reducing valve, and the right end of the intake pipe 21 is connected to the oil-side vent pipe 14 and the water-side vent pipe 14. The compressed air pressure gauge 221 is installed on the intake pipe 21 to detect the pressure of the intake pipe 21. Soapy water is used to coat the surface of the object to be checked for leaks to detect minor leaks. A brush is used to dip in soapy water and apply the dipped soapy water to the surface of the object to be checked for leaks.

[0019] The valve assembly includes an oil-side feed valve 233, a water-side feed valve 234, an oil-side discharge valve 236, a water-side discharge valve, an oil-side vent valve 232, a water-side vent valve 231, and a pressure relief valve 237, such as... Figure 1 As shown, the oil-side feed valve 233 is installed on the oil-side feed pipe 121 and connected to the oil-side feed pipe 121 via a flange; the water-side feed valve 234 is installed on the water-side feed pipe 131 and connected to the water-side feed pipe 131 via a flange; the oil-side discharge valve 236 is installed on the oil-side discharge pipe 122 and connected to the oil-side discharge pipe 122 via a flange; the water-side discharge valve is installed on the water-side discharge pipe 132 and connected to the water-side discharge pipe 132 via a flange; the oil-side vent valve 232 is installed on the oil-side vent pipe 14 and connected to the oil-side vent pipe 14 via a flange; the water-side vent valve 231 is installed on the water-side vent pipe 14 and connected to the water-side vent pipe 14 via a flange; and the pressure relief valve 237 is installed on the air intake pipe 21 and connected to the air intake pipe 21 via a flange.

[0020] The specific process for identifying and detecting leaks is as follows:

[0021] During use, the leak detection process for the oil side and water side of the oil cooler is largely the same. Taking the oil side leak detection as an example, firstly, the oil side is emptied by using compressed air to discharge the material from the oil side. The oil side feed valve 233 and vent valve are closed, and the oil side vent valve 232 and oil side discharge valve 236 are opened, so that the material from the oil side is discharged from the oil side discharge pipe 122 by compressed air. Then, the oil side is pressurized for leak detection by using compressed air to check for leaks. The oil side discharge valve 236 is closed, and the oil side is pressurized for leak detection. Next, the oil side is coated for leak detection by using a brush to apply soapy water to the surface of the heat exchange plate 11. The leak points are marked by observing the foam blown out by the compressed air, and the leak points are treated. Finally, after the treatment is completed, the surface of the heat exchange plate 11 is coated with soapy water again by using a brush to observe and mark the leak points until the compressed air pressure gauge 221 remains unchanged and is maintained for 4-5 minutes.

[0022] Example 2

[0023] Example 2 is basically the same as Example 1, except that, as Figure 2 As shown, an oil-side feed pressure gauge 222 is installed on the oil-side feed pipe 121, and a water-side feed pressure gauge 223 is installed on the water-side feed pipe 131. During the pressure holding test, the oil-side pressure and water-side pressure can be displayed by the oil-side feed pressure gauge 222 and the water-side feed pressure gauge 223 respectively, thereby eliminating the problem of leakage in the air intake pipe 21 and reducing the tediousness of leak detection.

[0024] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that the technical means used to solve problems in the above embodiments of this utility model can be combined to solve multiple technical problems simultaneously. For those skilled in the art, several modifications and improvements can be made without departing from the technical solution of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A leak detection device for a plate oil cooler, characterized by: The plate oil cooler body comprises an oil-side emptying pipe and an oil-side feeding pipe which are in communication with each other, and the leak detection unit comprises an air inlet pipe which is in communication with the oil-side emptying pipe and the oil-side feeding pipe and can feed air into the plate oil cooler body through the oil-side feeding pipe.

2. A leak detection device for a plate oil cooler according to claim 1, characterized in that: The leak detection unit further comprises soap water and a brush, the soap water is used to be coated on the surface of the object to be detected, and the brush is used to dip the soap water and coat the dipped soap water on the surface of the object to be detected.

3. A leak detection device for a plate oil cooler according to claim 2, characterized in that: The plate oil cooler body further comprises a water-side feeding pipe and a water-side emptying pipe, and the air inlet pipe is in communication with the water-side emptying pipe and the water-side feeding pipe and can feed air into the plate oil cooler body through the water-side feeding pipe.

4. A leak detection device for a plate oil cooler according to claim 3, characterized in that: The leak detection unit further comprises a pressure reducing valve which is arranged between the compressed air and the air inlet pipe.

5. A leak detection device for a plate oil cooler according to claim 4, characterized in that: The valve group for controlling the flow rate comprises an oil-side feeding valve which is arranged on the oil-side feeding pipe and can control the flow rate in the oil-side feeding pipe, a water-side feeding valve which is arranged on the water-side feeding pipe and can control the flow rate in the water-side feeding pipe, an oil-side discharging valve which is arranged on the oil-side discharging pipe and can control the flow rate in the oil-side discharging pipe, a water-side discharging valve which is arranged on the water-side discharging pipe and can control the flow rate in the water-side discharging pipe, an oil-side emptying valve which is arranged on the oil-side emptying pipe and can control the flow rate in the oil-side emptying pipe, and a water-side emptying valve which is arranged on the water-side emptying pipe and can control the flow rate in the water-side emptying pipe.

6. A leak detection device for a plate oil cooler according to claim 5, characterized in that: The air inlet pipe is provided with a compressed air pressure gauge for displaying the air pressure of the air inlet pipe.

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