Device and method for testing welding strength of embedded joint of water delivery soft belt

Abstract

The invention relates to a device and a method for testing the welding strength of an embedded joint of a water delivery soft belt. The testing device comprises a detection table, a cylindrical pressurizing water tank installed on the detection table, a water conveying pipe used for supplying water into the pressurizing water tank, a fixing and limiting mechanism used for fixing a detection sample to the side face of the pressurizing water tank and a plug used for plugging an embedded connector in the detection sample. A first through hole is formed in the side face of the pressurizing water tank, the detection sample covers the first through hole, and the embedded connector is communicated with the pressurizing water tank through the first through hole; the fixing and limiting mechanism comprises an arc-shaped pressing plate and a positioning piece; the arc-shaped pressing plate is used for covering the detection sample and pressing the detection sample on the side surface of the pressurizing water tank; the positioning piece is used for pressing the arc-shaped pressing plate; and a second through hole through which the embedded joint and the plug penetrate is formed in the arc-shaped pressing plate. According to the invention, the detection of the welding strength of the embedded screwed joint is realized, the reliability of the welding strength of the embedded screwed joint is ensured, and the production cost of the water delivery soft belt is reduced.

Description

Technical Field

[0001] This invention relates to the field of water conveyance flexible hose production technology, and in particular to a testing device and method for testing the welding strength of the inlaid joint of water conveyance flexible hose. Background Technology

[0002] Water conveying hoses are widely used as main water conveying pipes in agricultural irrigation. To facilitate quick connection between the hoses and external pipelines (branch pipes), threaded connectors are installed at intervals along the hoses. The reliability of the connection between the embedded threaded connector and the hose is higher; therefore, ultrasonic welding technology is currently generally used to weld the embedded threaded connector to the inner wall of the hose.

[0003] The welding strength of ultrasonic testing on embedded threaded joints is the most critical factor determining the service life and safety reliability of the entire water conveyance system. Insufficient welding strength can lead to micro-leakage points, which not only waste water resources over long-term operation but may also cause stress cracking in the surrounding materials, exacerbating the leakage. Currently, there is no testing method for the welding strength of embedded threaded joints, therefore the reliability of their welding strength cannot be effectively guaranteed.

[0004] The welding strength of ultrasonically welded inset threaded joints depends primarily on the parameter settings and adjustments of the ultrasonic welding machine. Therefore, the ultrasonic welding machine parameters need to be adjusted before each batch of water conveyance hoses is put into formal production. Based on the above problem, this application proposes a welding strength testing device and method for inset threaded joints of water conveyance hoses. After each adjustment of the ultrasonic welding machine parameters, the welded inset threaded joints are tested for strength. Only when the strength meets the requirements is the water conveyance hose put into formal production. This ensures the reliability of the welding strength of the inset threaded joints and reduces the production cost of the water conveyance hoses. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a testing device and method for testing the welding strength of inlaid joints in water conveyance flexible belts.

[0006] The first aspect of the present invention provides a testing device for the welding strength of an inlaid joint of a water conveyor belt, comprising a testing platform, a cylindrical pressurized water tank mounted on the testing platform, a water supply pipe for supplying water to the pressurized water tank, a fixing and limiting mechanism for fixing a test sample to the side of the pressurized water tank, and a plug for sealing the inlaid joint of the test sample; a first through hole is opened on the side of the pressurized water tank, the test sample covers the first through hole and the inlaid joint communicates with the pressurized water tank through the first through hole; the fixing and limiting mechanism includes an arc-shaped pressure plate for covering the test sample and pressing the test sample against the side of the pressurized water tank and a positioning member for pressing the arc-shaped pressure plate, and a second through hole is opened on the arc-shaped pressure plate for the inlaid joint and the plug to pass through.

[0007] Preferably, the positioning component includes a positioning screw fixed to the pressurized water tank and a locking nut connected to the positioning screw.

[0008] Preferably, there are four positioning screws distributed circumferentially along the outer side of the first through hole.

[0009] Preferably, a positioning notch is provided on the arc-shaped pressure plate that corresponds one-to-one with the positioning screw. After the positioning screw is inserted into the corresponding positioning notch, it is locked by a lock nut to fix the arc-shaped pressure plate.

[0010] Preferably, a sealing groove is provided on the outer wall of the pressurized water tank around the first through hole, and a sealing gasket is embedded in the sealing groove.

[0011] Preferably, the sealing groove consists of two rings, one inside the other, and each sealing groove contains a sealing gasket.

[0012] Preferably, both the first through hole and the second through hole are circular holes and are the same size.

[0013] Preferably, an inlet is provided on the end face of the pressurized water tank, the inlet is connected to a water supply pipe, and a booster pump is installed on the water supply pipe to supply water and increase pressure.

[0014] Preferably, the inlet is equipped with a four-way connector. One port of the four-way connector is connected to a water supply pipe, and another port is connected to a water storage tank via a pressure regulating pipe. A pressure regulating valve is installed on the pressure regulating pipe, and a pressure gauge is installed on the other port. Water is supplied to the pressure boosting tank through a booster pump and the water supply pipe. The water pressure is monitored in real time by the pressure gauge. The amount of water entering the pressure boosting tank is adjusted by regulating the opening degree of the pressure regulating valve, thereby regulating the water pressure inside the pressure boosting tank.

[0015] Preferably, the pressurized water tank is laid horizontally and fixed to the testing platform by a support plate, and the first through hole is located on the upper side of the pressurized water tank.

[0016] Preferably, if the test sample is too large, it will interfere with the positioning screw and make it inconvenient to tighten; if it is too small, there is a risk of water leakage between the test sample and the pressurized water tank. To facilitate cutting the test sample to the appropriate size in one go and further improve the reliability of the test, a template for assisting in cutting the test sample is also included. A die hole is set in the middle of the template for the inner connector to pass through. The test sample is cut into a sheet-like structure of the same size as the template with the assistance of the template, and the inner connector is located in the middle of the test sample.

[0017] In a second aspect, the present invention provides a method for detecting the welding strength of the inlaid joint of a water conveying hose using the above-mentioned detection device, comprising the following steps: (1) Use templates to cut and test samples; (2) The test sample is placed over the first through hole and pressed and fixed by the arc-shaped pressure plate and positioning piece. The inner fitting is exposed through the second through hole and the plug is connected inside the inner fitting. (3) Turn on the booster pump to supply water to the booster tank through the water supply pipe. Adjust the opening of the pressure regulating valve as needed to adjust the pressure in the booster tank. After the pressure requirement is reached, maintain the pressure for 10-20 minutes and check whether there is leakage at the welding position of the inlaid joint. If there is no leakage, it indicates that the welding strength of the inlaid threaded joint meets the requirements. If there is leakage, it indicates that the welding strength of the inlaid threaded joint does not meet the requirements.

[0018] The beneficial effects of this invention are as follows: 1. This invention enables the testing of the welding strength of inlaid threaded joints. The testing method is simple and easy to implement, and is convenient for promotion and application.

[0019] 2. Through the application of this invention, after each ultrasonic welding machine parameter adjustment, the welded inlaid threaded joint is subjected to strength testing. When the strength meets the requirements, it is put into the formal production of water conveying hose. This not only ensures the reliability of the welding strength of the inlaid threaded joint, but also reduces the production cost of water conveying hose. Attached Figure Description

[0020] Figure 1 This is a top view of the structure of the present invention; Figure 2 This is a top view schematic diagram of the sample detection process according to the present invention; Figure 3 This is a top view of the pressurized water tank of the present invention; Figure 4 This is a schematic diagram of the longitudinal section of the pressurized water tank of the present invention. Figure 5 This is a schematic diagram of the longitudinal section of the pressurized water tank of the present invention. Figure 6 This is a top view of the arc-shaped pressure plate of the present invention; Figure 7 This is a side view of the arc-shaped pressure plate of the present invention. Figure 8 This is a schematic diagram of the structure of the template of the present invention; Figure 9 This is a schematic diagram of the structure of the sample tested in this invention; As shown in the figure: 1. Testing platform, 2. Pressurized water tank, 3. Water supply pipe, 4. Test sample, 5. Plug, 6. Inset connector, 7. First through hole, 8. Arc-shaped pressure plate, 9. Second through hole, 10. Positioning screw, 11. Locking nut, 12. Positioning notch, 13. Sealing gasket, 14. Water inlet, 15. Pressure regulating water pipe, 16. Pressure regulating valve, 17. Pressure gauge, 18. Support plate, 19. Template, 20. Mold hole. Detailed Implementation

[0021] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0022] like Figure 1-5 As shown, the testing device of the present invention includes a testing platform 1, a cylindrical pressurized water tank 2 mounted on the testing platform 1, a water supply pipe 3 for supplying water to the pressurized water tank 2, a fixing and limiting mechanism for fixing the test sample 4 to the side of the pressurized water tank 2, and a plug 5 for sealing the inner connector 6 of the test sample 4. The inner connector 6 is a threaded connector, and the plug 5 is threadedly connected to the inner connector 6.

[0023] A first through hole 7 is opened on the side of the pressurized water tank 2. The test sample 4 covers the first through hole 7, and the inlaid connector 6 communicates with the pressurized water tank 2 through the first through hole 7. The fixing and limiting mechanism includes an arc-shaped pressure plate 8 for covering the test sample 4 and pressing the test sample 4 against the side of the pressurized water tank 2, and a positioning element for pressing the arc-shaped pressure plate 8. Figure 6 , 7 As shown, a second through hole 9 is provided on the arc-shaped pressure plate 8 for the inner fitting 6 and the plug 5 to pass through. The second through hole 9 also allows for easy observation of whether there is leakage at the welding position of the inner fitting 6. In this embodiment, both the first through hole 7 and the second through hole 9 are circular holes of the same size.

[0024] The positioning components include positioning screws 10 fixed to the pressurized water tank 2 and locking nuts 11 connected to the positioning screws 10. There are four positioning screws 10 distributed circumferentially along the outer side of the first through hole 7. Positioning notches 12 corresponding to the positioning screws 10 are provided on the arc-shaped pressure plate 8. After the positioning screws 10 are inserted into the corresponding positioning notches 12, they are locked by the locking nuts 11 to fix the arc-shaped pressure plate 8.

[0025] To ensure reliable detection, a sealing groove is provided on the outer wall of the pressurized water tank 2 around the first through hole 7, and a sealing gasket 13 is embedded in the sealing groove. In this embodiment, the sealing groove consists of two rings, one inside the other, and a sealing gasket 13 is embedded in each sealing groove.

[0026] An inlet 14 is provided on the end face of the pressurized water tank 2. The inlet 14 is connected to the water supply pipe 3, and a booster pump is installed on the water supply pipe 3 to supply and pressurize water. In this embodiment, the inlet 14 is equipped with a four-way connector. One of the four-way connectors is connected to the water supply pipe 3, and the other connector is connected to the water storage tank through a pressure regulating water pipe 15. A pressure regulating valve 16 is installed on the pressure regulating water pipe 15, and a pressure gauge 17 is installed on the other connector. Water is supplied to the pressurized water tank 2 through the booster pump and the water supply pipe 3 to increase the pressure. The water pressure is monitored in real time by the pressure gauge 17. The amount of water entering the pressurized water tank 2 is adjusted by adjusting the opening degree of the pressure regulating valve 16, that is, the water pressure in the pressurized water tank 2 is adjusted.

[0027] In this embodiment, the pressurized water tank 2 lies horizontally and is fixed to the testing platform 1 by the support plate 18, and the first through hole 7 is located on the upper side of the pressurized water tank 2.

[0028] If the test sample 4 is too large, it will interfere with the positioning screw 10, making it inconvenient to tighten. If it is too small, there is a risk of water leakage between the test sample 4 and the pressurized water tank 2. Therefore, in this embodiment, in order to facilitate the one-time cutting of the test sample 4 to a suitable size and further improve the reliability of the test, such as... Figure 8 , 9 As shown, the present invention also includes a template 19 for assisting in cutting the test sample 4, with a die hole 20 in the middle of the template 19 for the inner connector 6 to pass through. The template 19 assists in cutting the test sample 4 into a sheet-like structure of the same size as the template 19, with the inner connector 6 located in the middle of the test sample 4.

[0029] The method for testing the welding strength of the inlaid joint of the water conveyor hose using the above-mentioned testing device includes the following steps: (1) Use template 19 to cut and test sample 4; (2) The test sample 4 is placed over the first through hole 7 and pressed and fixed by the arc-shaped pressure plate 8 and the positioning piece. The inner connector 6 is exposed through the second through hole 9 and the plug 5 is connected inside the inner connector 6. (3) Turn on the booster pump to supply water to the booster tank 2 through the water supply pipe 3. Adjust the opening of the pressure regulating valve 16 as needed to adjust the pressure in the booster tank 2. After the pressure requirement is reached, maintain the pressure for 10-20 minutes and check whether there is leakage at the welding position of the inlaid joint 6. If there is no leakage, it indicates that the welding strength of the inlaid threaded joint meets the requirements. If there is leakage, it indicates that the welding strength of the inlaid threaded joint does not meet the requirements.

[0030] Of course, the above description is not limited to the examples above. Technical features not described in this invention can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solutions of this invention and are not intended to limit this invention. This invention has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this invention do not depart from the spirit of this invention and should also fall within the scope of protection of the claims of this invention.

Claims

1. A device for testing the welding strength of an inlaid joint in a water conveying hose, characterized in that: The device includes a testing platform, a cylindrical pressurized water tank mounted on the testing platform, a water supply pipe for supplying water to the pressurized water tank, a fixing and limiting mechanism for fixing the test sample to the side of the pressurized water tank, and a plug for sealing the internal connector of the test sample. A first through hole is opened on the side of the pressurized water tank, the test sample covers the first through hole and the internal connector communicates with the pressurized water tank through the first through hole. The fixing and limiting mechanism includes an arc-shaped pressure plate for covering the test sample and pressing the test sample against the side of the pressurized water tank, and a positioning component for pressing the arc-shaped pressure plate. A second through hole is opened on the arc-shaped pressure plate for the internal connector and the plug to pass through.

2. The testing device for the welding strength of the inlaid joint of the water conveying flexible belt according to claim 1, characterized in that: The positioning component includes a positioning screw fixed to the pressurized water tank and a locking nut connected to the positioning screw.

3. The testing device for the welding strength of the inlaid joint of the water conveying flexible belt according to claim 2, characterized in that: There are four positioning screws, which are distributed circumferentially along the outer side of the first through hole.

4. The testing device for the welding strength of the inlaid joint of the water conveying flexible belt according to claim 3, characterized in that: A positioning notch is set on the arc-shaped pressure plate, which corresponds to the positioning screw. After the positioning screw is inserted into the corresponding positioning notch, it is locked by the lock nut.

5. The testing device for the welding strength of the inlaid joint of the water conveying flexible belt according to claim 1, characterized in that: A sealing groove is provided on the outer wall of the pressurized water tank around the first through hole, and a sealing gasket is embedded in the sealing groove.

6. The testing device for the welding strength of the inlaid joint of the water conveying flexible belt according to claim 1, characterized in that: Both the first through hole and the second through hole are circular holes and are the same size.

7. The testing device for the welding strength of the inlaid joint of the water conveying flexible belt according to claim 1, characterized in that: An inlet is provided on the end face of the pressurized water tank, and the inlet is connected to a water supply pipe. A booster pump is installed on the water supply pipe to supply water and increase pressure.

8. The device for testing the welding strength of an inlaid joint in a water conveying hose according to claim 7, characterized in that: The inlet is equipped with a four-way connector. One of the four-way connectors is connected to the water supply pipe, and the other connector is connected to the water storage tank through a pressure regulating pipe. A pressure regulating valve is installed on the pressure regulating pipe, and a pressure gauge is installed on the other connector.

9. A method for testing the welding strength of the inlaid joint of a water conveyance flexible hose using the testing apparatus according to any one of claims 1-8, characterized in that, Includes the following steps: (1) Cut and test the sample; (2) The test sample is placed over the first through hole and pressed and fixed by the arc-shaped pressure plate and positioning piece. The inner fitting is exposed through the second through hole and the plug is connected inside the inner fitting. (3) Turn on the booster pump and supply water to the booster tank through the water supply pipe. After the pressure requirement is reached, maintain the pressure for 10-20 minutes and check whether there is leakage at the welding position of the inlaid joint. If there is no leakage, it indicates that the welding strength of the inlaid threaded joint meets the requirements.

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