Cooling piping pressure and flow detection device

Abstract

A cooling piping pressure and flow detection device comprises a cooling piping, a cooling oil tank, an air compressor, a liquid feeding pump, an oil-gas loop and a pressure relief loop which are matched with one another, and a pressure gauge, a manual switch and a flow meter are arranged on the oil-gas loop; wherein the cooling oil tank is connected with the liquid feeding pump, the liquid feeding pump and the air compressor are respectively communicated to the head end of the oil-gas loop, the cooling piping is connected to the oil-gas loop, the tail end of the oil-gas loop is connected back to the cooling oil tank, and the pressure relief loop is connected between the oil-gas loop and the cooling oil tank and matched with the pressure gauge; oil in the cooling oil tank is conveyed to the oil-gas loop through the liquid conveying pump, passes through the oil-gas loop, is subjected to pressure maintaining through the cooling piping and then flows back to the cooling oil tank so as to detect the pressure and flow of the cooling piping; gas in the air compressor passes through the oil-gas loop and the cooling piping to blow residual oil in the oil-gas loop and the cooling piping back to the cooling oil tank, the structure is simple, and accuracy and efficiency are high.

Description

Technical Field

[0001] The utility model relates to a pressure and flow detection device, and specifically relates to a cooling pipe pressure and flow detection device. Background Art

[0002] Before the cooling pipes in a linear motor are assembled and used, it is necessary to test the sealing performance and passability of the pipes. Currently, there is no corresponding equipment for measurement, and only manual inspection can be carried out, with very poor accuracy and low efficiency. Content of the Utility Model

[0003] The purpose of the utility model is to solve the above problems of the prior art, and provide a cooling pipe pressure and flow detection device with simple structure, high accuracy and high efficiency.

[0004] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0005] A cooling pipe pressure and flow detection device includes a cooling pipe, a cooling oil tank, an air compressor, a liquid delivery pump, an oil-gas circuit, and a pressure relief circuit that cooperate with each other. A pressure gauge, a manual switch, and a flow meter are provided on the oil-gas circuit; among them, the cooling oil tank is connected to the liquid delivery pump, the liquid delivery pump and the air compressor are respectively connected to the head end of the oil-gas circuit, the cooling pipe is connected to the oil-gas circuit, the tail end of the oil-gas circuit is connected back to the cooling oil tank, and the pressure relief circuit is connected between the oil-gas circuit and the cooling oil tank and cooperates with the pressure gauge; the oil in the cooling oil tank is sent to the oil-gas circuit through the liquid delivery pump, the oil passes through the oil-gas circuit and is kept under pressure through the cooling pipe and then flows back to the cooling oil tank to detect the pressure and flow of the cooling pipe; the gas in the air compressor passes through the oil-gas circuit and blows the residual oil in the oil-gas circuit and the cooling pipe back to the cooling oil tank through the cooling pipe.

[0006] Further, the oil-gas circuit includes a pipeline 1 and a pipeline 2 that cooperate with each other; the head end of the pipeline 1 is connected to the liquid delivery pump through a liquid path valve and connected to the air compressor through a gas path valve, and the tail end is connected to the cooling pipe; the head end of the pipeline 2 is connected to the cooling pipe, and the tail end is connected to the cooling oil tank. A pressure gauge, a manual switch, and a flow meter are connected to the pipeline 2; the oil in the cooling oil tank is sent to the pipeline 1, the cooling pipe, the pipeline 2 in sequence through the liquid delivery pump and the liquid path valve and flows back to the cooling oil tank after passing through the handle switch and the flow meter; the gas in the air compressor is sent to the pipeline 1, the cooling pipe, the pipeline 2 in sequence through the gas path valve and then flows back to the cooling oil tank.

[0007] Further, the pressure relief circuit includes a pressure relief valve and a pipeline 3; one end of the pipeline 3 is connected to the pipeline 1, and the other end is connected to the cooling oil tank. The pressure relief valve is connected to the pipeline 3 and cooperates with the pressure gauge.

[0008] Further, the liquid path valve and the gas path valve are ball valves.

[0009] Further, the manual switch is a handle ball valve.

[0010] After adopting the above solution, the utility model applies a certain pressure (up to 2 Mpa) to the inside of the cooling pipe and maintains the pressure for 20 minutes. If no oil leakage is found at the welded joints of the product, the sealing performance passes, and the passing performance is judged by a flow meter (3.6 - 4.5 L / min). This operation is carried out after the pressure test. 12 groups of products can be measured at a time, and the structure is simple, with high accuracy and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural diagram of the product of the utility model;

[0012] Figure 2 is a schematic diagram of the oil circuit of the utility model;

[0013] Figure 3 is a schematic diagram of the gas circuit of the utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] In order to further explain the technical solution of the utility model, the following will elaborate on the utility model through specific embodiments.

[0015] As Figures 1-3 shown, a cooling pipe pressure and flow rate detection device includes a cooling pipe 1, a cooling oil tank 2, an air compressor 3, a liquid delivery pump 4, an oil-gas circuit 5, and a pressure relief circuit 6 that cooperate with each other. A pressure gauge 7, a manual switch 8, and a flow meter 9 are provided on the oil-gas circuit 5; among them, the cooling oil tank 2 is connected to the liquid delivery pump 4, and the liquid delivery pump 4 and the air compressor 3 are respectively connected to the head end of the oil-gas circuit 5. The cooling pipe 1 is connected to the oil-gas circuit 5, and the tail end of the oil-gas circuit 5 is connected back to the cooling oil tank 2. The pressure relief circuit 6 is connected between the oil-gas circuit 5 and the cooling oil tank 2 and cooperates with the pressure gauge 7; the oil in the cooling oil tank 2 is sent to the oil-gas circuit 5 through the liquid delivery pump 4, and the oil passes through the oil-gas circuit 5 and is maintained under pressure by the cooling pipe 1 and then flows back to the cooling oil tank 2 to detect the pressure and flow rate of the cooling pipe; the gas in the air compressor 3 passes through the oil-gas circuit 5 and blows the residual oil in the oil-gas circuit 5 and the cooling pipe 1 back to the cooling oil tank 2 through the cooling pipe 1.

[0016] Furthermore, the oil-gas circuit 5 includes a pipeline 51 and a pipeline 52 that cooperate with each other; the head end of the pipeline 51 is connected to the liquid delivery pump 4 through a liquid path valve 53 and connected to the air compressor 3 through a gas path valve 54, and the tail end is connected to the cooling pipe 1; the head end of the pipeline 52 is connected to the cooling pipe 1, and the tail end is connected to the cooling oil tank 2. A pressure gauge 7, a manual switch 8, and a flow meter 9 are connected to the pipeline 52; the oil in the cooling oil tank 2 is sent to the pipeline 51, the cooling pipe 1, and the pipeline 52 through the liquid delivery pump 4 and the liquid path valve 53 in sequence and flows back to the cooling oil tank 2 after passing through the handle switch 8 and the flow meter 9; the gas in the air compressor 3 is sent to the pipeline 51, the cooling pipe 1, and the pipeline 52 through the gas path valve 54 in sequence and then flows back to the cooling oil tank 2.

[0017] Furthermore, the pressure relief circuit 6 includes a pressure relief valve 61 and a third pipeline 62; one end of the third pipeline 62 is connected to the first pipeline 51, and the other end is connected to the cooling oil tank 2. The pressure relief valve 61 is connected to the third pipeline 62 and cooperates with the pressure gauge 7.

[0018] Furthermore, the liquid path valve 53 and the gas path valve 54 can be ball valves. The manual switch 8 can be a handle ball valve.

[0019] Operation process:

[0020] 1. In the initial state, all valves are in the closed state and are connected to the circuit as shown in the figure.

[0021] 2. Open the liquid path valve and turn on the power supply. The power supply is connected to the frequency converter 10. Adjust the rotation speed of the liquid delivery pump through the frequency converter 10 to change the pressure in the oil pipe. The pressure state can be confirmed through the pressure gauge. If the pressure in the pipe is higher than the set value of the pressure relief valve, the pressure relief valve will automatically open, and the pressure relief circuit will work for pressure relief.

[0022] 3. After maintaining the pressure for 20 minutes, check whether the product leaks.

[0023] 4. After confirming no leakage, open the manual switch to make the coolant return to the cooling oil tank through the flow meter to complete the cycle. The value can be obtained by observing the flow meter. If it is within the set range, it is qualified.

[0024] 5. Adjust the frequency converter to the lowest level, turn off the power supply, close the liquid path valve, open the gas path valve, and the gas in the air compressor will blow the residual liquid in the circuit back to the oil tank.

[0025] In the present utility model, a certain pressure (up to 2 Mpa) is applied to the cooling pipe, and the pressure is maintained for 20 minutes. If no oil leakage is found at the welded joints of the product, the sealing performance is qualified. The passing performance is judged by the flow meter (3.6 - 4.5 L / min), and this operation is after the pressure test. 12 groups of products can be measured at a time, and the structure is simple, with high accuracy and efficiency.

[0026] The above description shows and describes the preferred embodiments of the present utility model. As mentioned above, it should be understood that the present utility model is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the inventive concept described herein through the above teachings or the technology or knowledge in related fields. And any changes and modifications made by those skilled in the art without departing from the spirit and scope of the present utility model should fall within the protection scope of the appended claims of the present utility model.

Claims

1. A cooling pipe pressure and flow detection device, characterized in that: It includes cooling piping, cooling oil tank, air compressor, liquid delivery pump, oil and gas circuit, and pressure relief circuit that cooperate with each other. The oil and gas circuit is equipped with a pressure gauge, manual switch and flow meter. Among them, the cooling oil tank is connected to the liquid delivery pump, the liquid delivery pump and the air compressor are respectively connected to the head end of the oil and gas circuit, the cooling piping is connected to the oil and gas circuit, the tail end of the oil and gas circuit is connected back to the cooling oil tank, and the pressure relief circuit is connected between the oil and gas circuit and the cooling oil tank and cooperates with the pressure gauge. The oil in the cooling oil tank is delivered to the oil and gas circuit by the liquid delivery pump, and the oil flows back to the cooling oil tank after passing through the oil and gas circuit and the cooling piping to maintain pressure so as to detect the cooling piping pressure and flow rate. The gas in the air compressor passes through the oil and gas circuit and the cooling piping to blow the residual oil in the oil and gas circuit and the cooling piping back to the cooling oil tank.

2. A cooling pipe pressure and flow detection device as claimed in claim 1, characterized in that: The oil and gas circuit includes pipeline 1 and pipeline 2 which cooperate with each other; the first end of the pipeline is connected to the liquid delivery pump through the liquid circuit valve, connected to the air compressor through the gas circuit valve, and the tail end is connected to the cooling pipe; the first end of pipeline 2 is connected to the cooling pipe, and the tail end is connected to the cooling oil tank, and pipeline 2 is connected with a pressure gauge, a manual switch and a flow meter; the oil in the cooling oil tank is sent to pipeline 1, the cooling pipe, and pipeline 2 in turn through the liquid delivery pump and the liquid circuit valve, and flows back to the cooling oil tank after passing through the handle switch and the flow meter; the gas in the air compressor is sent to pipeline 1, the cooling pipe, and pipeline 2 in turn through the gas circuit valve, and then flows back to the cooling oil tank.

3. A cooling pipe pressure and flow detection device as claimed in claim 1 or 2, characterized in that: The pressure relief circuit includes a pressure relief valve and pipeline three; one end of pipeline three is connected to pipeline one, and the other end is connected to the cooling oil tank. The pressure relief valve is connected to pipeline three and cooperates with the pressure gauge.

4. A cooling pipe pressure and flow detection device as claimed in claim 3, characterized in that: The liquid circuit valve and gas circuit valve are ball valves.

5. A cooling pipe pressure and flow detection device as claimed in claim 3, characterized in that: The manual switch is a handle ball valve.

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