Device for detecting compressive strength of PFA (Polyfluoroalkoxy) pipe

Abstract

The utility model provides a device for detecting the compressive strength of a PFA (Polyfluoroalkoxy) pipe. Comprising a machine base, a detection groove is formed in the machine base, a water supply device is installed at one end of the detection groove, a water inlet pipe is connected to the upper portion of the water supply device, and the side face of the water supply device communicates with the interior of the detection groove through a water outlet pipe; a water storage pipe is installed on the rod portion of the push rod motor, a second quick connector is installed at an inlet of the water storage pipe, a water outlet is formed in the side face of the water storage pipe, an electric control valve is installed at the water outlet, a pressure gauge is installed at the top of the water storage pipe, and a clamping mechanism is installed in the middle of the detection groove. According to the utility model, a series of pipeline structures are arranged, the compressive strength of the PFA pipe is mapped through the change of water pressure in the PFA pipe when the PFA pipe is pressed, and the compressive strength of the PFA pipe can be conveniently and intuitively detected.

Description

Technical Field

[0001] This utility model belongs to the field of pipeline testing technology and relates to a device for testing the pressure resistance of PFA pipes. Background Technology

[0002] PFA (perfluoroalkoxyalkane) tubing is a high-performance fluoroplastic tubing with excellent chemical stability and temperature resistance. It is commonly used as a conveying pipe in chemical, medical and other fields. Since conveying pipes need to have a certain pressure resistance, it is necessary to design a PFA tubing pressure resistance testing device in order to effectively test the pressure resistance of PFA tubing. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a device for testing the pressure resistance of PFA pipes.

[0004] The objective of this utility model can be achieved through the following technical solution: A PFA pipe pressure resistance testing device, comprising a base, characterized in that a testing groove is provided on the base, a water supply device is installed at one end of the testing groove, an inlet pipe is connected above the water supply device, the side of the water supply device is connected to the inside of the testing groove through an outlet pipe, a quick connector is installed at the outlet of the outlet pipe, a push rod motor is horizontally installed at the other end of the testing groove, a water storage pipe is installed on the rod of the push rod motor, a quick connector is installed at the inlet of the water storage pipe, an outlet is opened on the side of the water storage pipe, an electrically controlled valve is installed at the outlet, a pressure gauge is installed on the top of the water storage pipe, a set of clamping mechanisms is installed in the middle section of the testing groove, the clamping mechanism includes a hydraulic push rod, the hydraulic push rod is horizontally installed inside the testing groove, an arc-shaped clamping block is installed on the rod of the hydraulic push rod through an installation component, a protrusion is provided in the middle section of the arc-shaped clamping block, buffer strips are evenly installed on both sides of the protrusion, and a drain pipe is connected to the bottom of the testing groove.

[0005] The working principle of this utility model is as follows: One end of the PFA tube to be tested is fixed through quick connector one, and the other end of the PFA tube is aligned with quick connector two. The fixing is completed under the action of the push rod motor. Then, water is transported from the inlet pipe to the outlet pipe through the water supply device. After passing through the PFA tube, it enters the storage pipe. When the water in the storage pipe reaches the specified amount, the electric control valve switches from the open state to the closed state. At the same time, the water supply device switches to the low power working state and pushes out the arc-shaped clamping block through the hydraulic push rod to clamp the outer wall of the PFA tube. Then, the hydraulic push rod continuously applies pressure, applying pressure to the PFA tube through the protrusion. At the same time, the buffer strip plays a role in buffering and wrapping. During this period, the pressure inside the tube is detected and recorded by the pressure gauge. When the pressure applied by the hydraulic push rod reaches the specified value or the PFA tube cannot withstand the pressure and deforms, the entire process stops, and the pressure resistance test is completed. Then, the electric control valve is opened to allow the water in the tube to flow out to the drain pipe at the bottom of the test tank and be drained away.

[0006] The quick connector one and quick connector two are clamp-type quick connectors, and quick connector one and quick connector two are installed by threaded structure.

[0007] With the above structure, the clamp-type quick connector ensures a good seal while allowing for quick and easy manual fixing of the pipe head. The threaded structure also allows for quick replacement of the corresponding size connector according to the size of different PFA pipes.

[0008] The arc-shaped clamping block is made of alloy material.

[0009] The above structure ensures rigidity during clamping and provides wrapping protection when the PFA tube deforms.

[0010] The protrusion is made of rigid silicone material.

[0011] With the above structure, the rigid silicone material used to apply pressure to the PFA tube has a certain degree of hardness, while also protecting the tube body.

[0012] The buffer strip is made of soft silicone material.

[0013] With the above structure, compared to the protrusion, the buffer strip plays a role in positioning the PFA pipe during clamping and in buffering the pressure during application.

[0014] Compared with the prior art, this PFA pipe pressure resistance testing device has the following advantages: This utility model sets up a series of pipeline structures, and maps the pressure resistance of the PFA pipe by the change of water pressure inside the pipe when the PFA pipe is under pressure, so as to conveniently and intuitively detect the pressure resistance of the PFA pipe. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the clamping mechanism in this utility model.

[0017] In the diagram: 1. Base; 2. Detection tank; 3. Water supply device; 4. Inlet pipe; 5. Outlet pipe; 6. Quick connector one; 7. Push rod motor; 8. Water storage pipe; 9. Quick connector two; 10. Electrically controlled valve; 11. Pressure gauge; 12. Hydraulic push rod; 13. Mounting component; 14. Arc-shaped clamp; 15. Protrusion; 16. Buffer strip; 17. Drain pipe. Detailed Implementation

[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0019] like Figure 1-2 As shown, this PFA pipe pressure resistance testing device includes a base 1, a testing groove 2 on the base 1, a water supply device 3 installed at one end of the testing groove 2, an inlet pipe 4 connected to the top of the water supply device 3, and an outlet pipe 5 connecting the side of the water supply device 3 to the inside of the testing groove 2. A quick connector 6 is installed at the opening of the outlet pipe 5. A push rod motor 7 is horizontally installed at the other end of the testing groove 2, a water storage pipe 8 is installed on the rod of the push rod motor 7, and a quick connector 9 is installed at the inlet of the water storage pipe 8. A water outlet is provided on the side, and an electrically controlled valve 10 is installed at the water outlet. A pressure gauge 11 is installed on the top of the water storage pipe 8. A set of clamping mechanisms is installed in the middle of the detection tank 2. The clamping mechanism includes a hydraulic push rod 12, which is horizontally installed inside the detection tank 2. An arc-shaped clamping block 14 is installed on the rod of the hydraulic push rod 12 through the mounting part 13. A protrusion 15 is provided in the middle of the arc-shaped clamping block 14. Buffer strips 16 are evenly installed on both sides of the protrusion 15. A drain pipe 17 is connected to the bottom of the detection tank 2.

[0020] In this utility model, the water supply device 3 adopts an existing pressurized water pump structure.

[0021] In this utility model, the water inlet pipe 4 is connected to an external water supply device.

[0022] In this utility model, the water outlet pipe 5 and the water storage pipe 8 are made of metal fittings.

[0023] The pressure gauge 11 in this utility model is an existing product.

[0024] The arc setting of the arc-shaped clamp 14 in this utility model can meet the clamping and testing of most PFA pipes of different diameters. If it cannot meet the requirements, the clamp with the customized arc can be replaced.

[0025] Quick connector 16 and quick connector 29 are clamp-type quick connectors, and quick connector 16 and quick connector 29 are installed via a threaded structure.

[0026] The clamp-type quick connector in this utility model is a commonly used product for existing pipe connections. The connection has a certain degree of elasticity, which can ensure the seal of the connection under a certain degree of deformation.

[0027] The arc-shaped clamp 14 is made of alloy material.

[0028] The protrusion 15 is made of hard silicone material.

[0029] The hardness of the rigid silicone material in this invention is 70-80A.

[0030] The buffer strip 16 is made of soft silicone material.

[0031] The hardness of the soft silicone material in this invention is 30-40A.

[0032] The working principle of this utility model is as follows: One end of the PFA tube to be tested is fixed by quick connector 6, and the other end of the PFA tube is aligned with quick connector 9. The fixation is completed under the action of push rod motor 7. Then, water is transported from inlet pipe 4 to outlet pipe 5 through water supply device 3. After passing through PFA tube, it enters water storage pipe 8. When the water in water storage pipe 8 reaches the specified amount, the electric control valve 10 switches from open to closed. At the same time, water supply device 3 switches to low power operation and pushes out arc-shaped clamp 14 through hydraulic push rod 12 to clamp the outer wall of PFA tube. Then, hydraulic push rod 12 continuously applies pressure and applies pressure to PFA tube through protrusion 15. At the same time, buffer strip 16 plays a role in buffering and wrapping. During this period, pressure gauge 11 detects and records the pressure in the tube. When the pressure applied by hydraulic push rod 12 reaches the specified value or PFA tube cannot withstand the pressure and deforms, the whole process stops and the pressure resistance test is completed. Then, the electric control valve 10 is opened to allow the water in the tube to flow out to the drain pipe 17 at the bottom of the test tank 2 and be drained away.

[0033] In this invention, the various mechanisms are connected and driven using existing technologies, and synchronous control is achieved through a control panel.

[0034] All of the above components are general standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0035] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A device for testing the withstand voltage strength of PFA pipes, comprising a base (1), characterized in that, The base (1) is provided with a detection groove (2). A water supply device (3) is installed at one end of the detection groove (2). A water inlet pipe (4) is connected above the water supply device (3). The side of the water supply device (3) is connected to the inside of the detection groove (2) through a water outlet pipe (5). A quick connector (6) is installed at the opening of the water outlet pipe (5). A push rod motor (7) is horizontally installed at the other end of the detection groove (2). A water storage pipe (8) is installed on the rod of the push rod motor (7). A quick connector (9) is installed at the inlet of the water storage pipe (8). A water outlet is opened on the side of the water storage pipe (8). An electric control valve (10) is installed at the opening, and a pressure gauge (11) is installed on the top of the water storage pipe (8). A set of clamping mechanisms is installed in the middle section of the detection groove (2). The clamping mechanism includes a hydraulic push rod (12). The hydraulic push rod (12) is horizontally installed inside the detection groove (2). The rod of the hydraulic push rod (12) is fitted with an arc-shaped clamping block (14) through the mounting part (13). A protrusion (15) is provided in the middle section of the arc-shaped clamping block (14). Buffer strips (16) are evenly installed on both sides of the protrusion (15). A drain pipe (17) is connected to the bottom of the detection groove (2).

2. The PFA pipe withstand voltage testing device according to claim 1, characterized in that, The quick connector one (6) and quick connector two (9) are clamp-type quick connectors, and quick connector one (6) and quick connector two (9) are installed by threaded structure.

3. The PFA pipe withstand voltage testing device according to claim 1, characterized in that, The arc-shaped clamp (14) is made of alloy material.

4. The PFA pipe withstand voltage testing device according to claim 1, characterized in that, The protrusion (15) is made of hard silicone material.

5. The PFA pipe withstand voltage testing device according to claim 1, characterized in that, The buffer strip (16) is made of soft silicone material.

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