Corrugated pipe testing device

Abstract

The invention belongs to the technical field of testing devices, and discloses a corrugated pipe testing device which comprises a mounting frame, a water tank, a pressure monitoring mechanism, an inlet input mechanism and an outlet backflow mechanism, one end of the inlet input mechanism is communicated with the water tank, and the other end of the inlet input mechanism is communicated with an inlet testing pipeline. Through the communicating assemblies corresponding to the top of the first pipe head and the top of the second pipe head, pressure air is guided into one set of communicating assemblies, communication between the communicating assemblies and the first pipe head is achieved, communication between the other set of communicating assemblies and the second pipe head is achieved through the adjusting control part, and a well-sealed corrugated pipe is assembled in a matched mode; pressure air is input into the corrugated pipe to be purged, dust and particles attached to the interior of the corrugated pipe are rapidly removed, the internal drainage test of the corrugated pipe can be carried out along with resetting of the conduction assembly after purging, the corrugated pipe does not need to be repeatedly disassembled and assembled, and the conduction assembly integrated at the test end is used for testing the internal drainage of the corrugated pipe. Rapid and effective cleaning treatment before corrugated light testing is completed, and the using effect is good.

Description

Technical Field

[0001] The present invention belongs to the technical field of testing devices, and specifically relates to a testing device for bellows. Background Art

[0002] The bellows testing device precisely controls fluid pressure, temperature, and flow rate, measures the pressure difference (ΔP) and temperature difference (ΔT), and intelligently matches the optimal bellows model in combination with a database to ensure performance adaptation and quality verification.

[0003] In the existing bellows testing device, during use, in order to test and obtain accurate bellows and meet customer requirements, the liquid input method is used. By controlling the fluid temperature and pressure entering the bellows under test, and measuring the temperature and pressure at the outlet end, the performance of the insulated pipe under test is judged by calculating the temperature difference and pressure difference, and precise matching is carried out according to customer requirements. Also, by changing the initial values of the inlet pressure and temperature, the corresponding performance at a certain pressure and temperature can be tested. However, during testing, impurities and dirt inside the bellows affect the fluid passing effect and the final test accuracy. Usually, cleaning treatment is carried out. However, during internal cleaning at present, startup purging is often used. After purging and cleaning by independently connecting a gas supply mechanism, it is still necessary to disassemble and reconnect to the test tooling. It is necessary to repeatedly connect and fix the bellows and perform sealing treatment. The operation is troublesome. For the continuous testing of multiple groups of bellows, on the one hand, the efficiency is low, and on the other hand, repeated disassembly and assembly are likely to cause damage to the ends of the bellows. The comprehensive testing and processing efficiency is low, and the use effect is not good. Summary of the Invention

[0004] The purpose of the present invention is to provide a testing device for bellows to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A testing device for bellows, including a mounting frame, a water tank, a pressure monitoring mechanism, an inlet input mechanism, and an outlet return mechanism. One end of the inlet input mechanism is connected to the water tank, and the other end is connected to an inlet test pipeline. One end of the outlet return mechanism is connected to the water tank, and the other end is connected to an outlet test pipeline. The end of the inlet test pipeline is connected to a first pipe head, and the end of the outlet test pipeline is connected to a second pipe head. Mounting components are connected to the ends of the first pipe head and the second pipe head. A gas supply component is provided on one side of the mounting frame. Conducting components are installed on the tops of the first pipe head and the second pipe head. A distribution part is provided above one of the conducting components, and an adjustment control part is provided on the top of the other conducting component. The distribution part controls a group of conducting components to be connected to the first pipe head through the gas supply component, and the distribution part installs and seals the bellows through the gas supply component and the mounting component. The adjustment control part controls the other conducting component to be connected to the second pipe head.

[0006] Preferably, the inlet input mechanism includes an inhalation pipeline, a pump machine communicated with the inhalation pipeline, a heating part communicated with the pump machine, the outlet end of the heating part is communicated with an inlet test pipeline, the inhalation pipeline is communicated with a water tank, the outlet reflux mechanism is a reflux pipeline, and the reflux pipeline is communicated with the water tank.

[0007] Preferably, the inlet test pipeline includes an inlet pipe, a first temperature detector, a first pressure gauge and a first control valve. The first temperature detector, the first pressure gauge and the first control valve are all fixed on the inlet pipe. The two ends of the inlet pipe are respectively communicated with a first pipe head and the heating part. The outlet test pipeline includes an outlet pipe, a second temperature detector, a second pressure gauge and a second control valve. The second temperature detector, the second pressure gauge and the second control valve are all fixed on the outlet pipe. The two ends of the outlet pipe are respectively communicated with a second pipe head and the reflux pipeline.

[0008] Preferably, the conduction assembly includes a fixed cylinder, a movable plug, a top sleeve rod, a communication air duct and a spring. The fixed cylinders in the two conduction assemblies are respectively fixed on the tops of the first pipe head and the second pipe head. The movable plug is movably sleeved in the fixed cylinder. The top sleeve rod is fixedly connected to the top of the movable plug. One end of the spring is fixedly connected to the movable plug, and the other end is fixedly connected in the fixed cylinder. The communication air duct is opened in the movable plug. One end of the communication air duct passes through the side surface of the movable plug, and the other end penetrates through the top sleeve rod and is communicated with the outside.

[0009] Preferably, the air supply assembly includes a bracket, an air pump and an output pipe. The air pump is fixed on the bracket, and its output end is communicated with the output pipe. The air outlet end of the output pipe is communicated with the distribution part.

[0010] Preferably, the distribution part includes a reversing valve and a conduction sleeve. The air inlet end of the reversing valve is communicated with the output pipe. One end of the conduction sleeve is communicated with the reversing valve, and the other end is sleeved above the conduction assembly and on the outside of the top sleeve rod.

[0011] Preferably, the adjustment and control part includes a sleeve plate and an electric push rod. The sleeve plate is fixedly sleeved on the outside of the fixed cylinder of the corresponding conduction assembly. The movable end of the electric push rod is fixedly connected to the sleeve plate and controls the movement of the movable plug in the corresponding conduction assembly through the sleeve plate.

[0012] Preferably, the installation assembly includes a connecting cover, an inner cylinder, a locking bolt and an elastic airbag. The inner cylinder is fixedly connected inside the connecting cover. The locking bolt is threadedly sleeved on the outside of the connecting cover. The elastic airbag is fixedly sleeved on the outside of the inner cylinder.

[0013] Preferably, a communication component is provided between the two groups of the mounting components. One end of the communication component is communicated with the distribution part. The communication component includes an intermediate pipe, a communication port and a communication pipe. The intermediate pipe is fixedly connected between the two connection covers. The communication port is opened in the connection cover and communicated with the elastic airbag, and the communication port is communicated with the intermediate pipe. The communication pipe is communicatively arranged between the intermediate pipe and the reversing valve.

[0014] Preferably, a test pressure gauge is provided at the bottom of the second pipe head.

[0015] The beneficial effects of the present invention are as follows: (1) By using the air supply component and the distribution part, and cooperating with the conduction components corresponding to the tops of the first pipe head and the second pipe head, the present invention realizes the connection between the conduction component and the first pipe head by introducing pressurized air into a group of conduction components, and uses the adjustment control part to realize the conduction between the other group of conduction components and the second pipe head. Cooperating with the well-assembled and sealed corrugated pipe, the pressurized air is input into the corrugated pipe for purging treatment, quickly removing the attached dust and particles inside. And after purging, the internal liquid conduction test of the corrugated pipe can be carried out as the conduction component resets, without repeatedly disassembling and assembling the corrugated pipe. By using the conduction component integrated at the test end, the quick and effective cleaning treatment before the corrugated pipe test is completed, and the use effect is good.

[0016] (2) By using the elastic airbag and the locking bolt in the mounting component, and cooperating with the distribution part and the air supply component, the present invention forms an annular space surrounded and sleeved inside the mounting component to adapt to the sleeving of corrugated pipes of different sizes. After the corrugated pipe is inserted, the locking bolt is first used to basically fix the end of the corrugated pipe with elastic deformation ability. After guiding the pressurized air into the mounting component, the elastic airbag is inflated and expanded, and the inside of the inserted corrugated pipe is filled, realizing the fixed sleeving and stable sealing of corrugated pipes of different sizes, facilitating the subsequent test, actually expanding the test range, and having good installation sealing performance.

[0017] (3) By cooperating with the test pressure gauge at the bottom of the second pipe head, after the internal cleaning treatment of the corrugated pipe is completed, the conduction component on the second pipe head is reset by using the adjustment control part to cut off the air outlet path of the input air, realizing the continuous supply of pressurized air, so that the internal air pressure of the corrugated pipe is enhanced. After the internal pressure rises, the input of pressurized air is stopped, and the input end is sealed, so that the pressurized air is statically stored in the corrugated pipe. By observing the numerical change of the test pressure gauge, it is judged whether there are cracks or air leakage holes in the corrugated pipe. Before the selection and matching test, the quality inspection is completed, avoiding selecting and matching corrugated pipes with defects, and the comprehensive test and selection and matching effect is good. Description of the Drawings

[0018] Figure 1 is a structural schematic diagram of the present invention; Figure 2 Schematic diagram of the inlet test pipeline and the outlet test pipeline of the present invention; Figure 3 Schematic diagram of the connection of the two conduction components of the present invention to the first pipe head and the second pipe head respectively; Figure 4 Cross-sectional view of the conduction component of the present invention and the first pipe head; Figure 5 Cross-sectional view of the conduction component of the present invention and the installation component; Figure 6 Cross-sectional view of the connection component of the present invention; Figure 7 Schematic diagram of the connection between the middle pipe and the connection pipe of the present invention.

[0019] In the figure: 1, mounting frame; 2, water tank; 3, suction pipeline; 4, pump; 5, heating part; 6, return pipeline; 7, pressure monitoring mechanism; 8, inlet test pipeline; 81, inlet pipe; 82, temperature detector 1; 83, pressure gauge 1; 84, control valve 1; 9, outlet test pipeline; 91, outlet pipe; 92, temperature detector 2; 93, pressure gauge 2; 94, control valve 2; 10, first pipe head; 11, second pipe head; 12, installation component; 121, connection cover; 122, inner cylinder; 123, locking bolt; 124, elastic airbag; 13, air supply component; 131, support; 132, air pump; 133, output pipe; 14, conduction component; 141, fixed cylinder; 142, movable plug; 143, top sleeve rod; 144, communication air duct; 145, spring; 15, distribution part; 151, reversing valve; 152, conduction sleeve; 16, adjustment and control part; 161, sleeve plate; 162, electric push rod; 17, test pressure gauge; 18, connection component; 181, middle pipe; 182, communication port; 183, connection pipe. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Such as Figures 1 to 7As shown in the figure, an embodiment of the present invention provides a testing device for a corrugated pipe, including a mounting rack 1, a water tank 2, a pressure monitoring mechanism 7, an inlet input mechanism, and an outlet return mechanism. One end of the inlet input mechanism is communicated with the water tank 2, and the other end is communicated with an inlet test pipeline 8. One end of the outlet return mechanism is communicated with the water tank, and the other end is communicated with an outlet test pipeline 9. The end of the inlet test pipeline 8 is communicated with a first pipe head 10, and the end of the outlet test pipeline 9 is communicated with a second pipe head 11. Installation components 12 are communicated with the ends of the first pipe head 10 and the second pipe head 11. An air supply component 13 is arranged on one side of the mounting rack 1. Conducting components 14 are installed on the tops of the first pipe head 10 and the second pipe head 11. A distribution part 15 is arranged above one of the conducting components 14, and an adjustment control part 16 is arranged on the top of the other conducting component 14. The distribution part 15 controls a group of conducting components 14 to be communicated with the first pipe head 10 through the air supply component 13, and the distribution part 15 installs and seals the corrugated pipe through the air supply component 13 and the installation component 12. The adjustment control part 16 controls the other conducting component 14 to be communicated with the second pipe head 11.

[0022] Embodiment: The two ends of the corrugated pipe to be tested are sleeved into the connection covers 121 in the two groups of installation components 12 and are sleeved outside the elastic air bags 124. The locking bolts 123 are rotated to preliminarily position the sleeved corrugated pipe. The air pump 132 in the air supply component 13 is started. The air pump 132 inputs pressurized air into the distribution part 15. The reversing valve 151 is started, so that the pressurized air is input into the communicating component 18 and is input into the elastic air bag 124 through the communicating pipe 183 and the communicating port 182, so that the elastic air bag 124 is inflated and expanded and fills the inner side of the clamped corrugated pipe, filling the inner space between the corrugated pipe and the inner cylinder 122, completing the sealing, and completing the fixing and sealing; Keep the control valve I 84 in the inlet test pipeline 8 closed and the control valve II 94 in the outlet test pipeline 9 closed. Then, the reversing valve 151 is actuated, so that the pressurized air is input into the corresponding conducting component 14 through the conducting sleeve 152. Under the push of the pressurized air, the top sleeve rod 143 moves downward, driving the communicating air duct 144 to move downward and be communicated with the first pipe head 10. Thus, the pressurized air is introduced into the first pipe head 10 and is input into the corrugated pipe. At the same time, the adjustment control part 16 is started, so that the electric push rod 162 drives the sleeve plate 161 to move downward and controls the top sleeve rod 143 in the connected conducting component 14 to move downward. The communicating air duct 144 moves downward and is communicated with the second pipe head 11. The pressurized air introduced into the corrugated pipe sweeps the inner wall of the corrugated pipe, and the internal impurities and dust are swept out through the communicating air duct 144 on the side of the second pipe head 11, completing the internal cleaning; Restart the electric push rod 162 to drive the sleeve plate 161 and the top sleeve rod 143 to move upward, so that the corresponding communication airway 144 is disconnected from the second pipe head 11. As the air pressure inside the corrugated pipe gradually increases, the pressure value of the test pressure gauge 17 increases. Stop the air supply and maintain the stability of the air pressure inside the corrugated pipe. Observe the change of the pressure value of the test pressure gauge 17 within a certain period of time to judge the sealing performance of the corrugated pipe; After internal cleaning and sealing detection, close the air supply assembly 13, start the pump 4 in the inlet input mechanism, suck the water in the water tank 2 into the heating part 5 through the suction pipeline 3 for heating, and then introduce it into the inlet test pipeline 8. The temperature detector 82 and the pressure gauge 83 in the inlet test pipeline 8 test the temperature and hydraulic pressure entering the corrugated pipe. As the fluid enters the corrugated pipe and is introduced into the outlet test pipeline 9, the temperature detector 92 and the pressure gauge 93 in the outlet test pipeline 9 detect the temperature and pressure at the outlet of the corrugated pipe, calculate the temperature difference and pressure difference, and evaluate the performance of the corrugated pipe to complete the matching test.

[0023] First, by using the elastic airbag 124 and the locking bolt 123 in the installation assembly 12, in cooperation with the distribution part 15 and the air supply assembly 13, an annular space surrounded and sleeved is formed inside the installation assembly 12 to adapt to the insertion of corrugated pipes of different sizes. After insertion, first use the locking bolt 123 to basically fix the end of the corrugated pipe with elastic deformation ability. After guiding the compressed air into the installation assembly 12, the elastic airbag 124 is inflated and expanded, and the inside of the inserted corrugated pipe is filled to achieve the fixed socket and stable seal of corrugated pipes of different sizes, which is convenient for subsequent testing, actually expanding the test range and having good installation tightness.

[0024] In addition, by using the air supply assembly 13 and the distribution part 15 again, in cooperation with the conduction assemblies 14 corresponding to the tops of the first pipe head 10 and the second pipe head 11, by introducing the compressed air into a group of conduction assemblies 14, the connection between the conduction assembly 14 and the first pipe head 10 is realized, and the conduction of another group of conduction assemblies with the second pipe head 11 is realized by using the adjustment and control part 16. In cooperation with the well-assembled and sealed corrugated pipe, the compressed air is input into the corrugated pipe for purging treatment to quickly remove the attached dust and particles inside. After purging, as the conduction assembly 14 resets, the internal liquid conduction test of the corrugated pipe can be carried out, without repeatedly disassembling and assembling the corrugated pipe. By using the conduction assembly 14 integrated at the test end, a quick and effective pre-test cleaning treatment of the corrugated pipe is completed, and the use effect is good.

[0025] On the other hand, by cooperating with the test pressure gauge 17 at the bottom of the second pipe head 11, after the internal cleaning of the corrugated pipe is completed, the conduction component 14 on the second pipe head 11 is reset by using the adjustment control unit 16 to cut off the air outlet path of the input air, so as to continuously feed the pressure air, enhance the internal air pressure of the corrugated pipe. After the internal pressure rises, the input of the pressure air is stopped, the input end is sealed, so that the pressure air is statically stored in the corrugated pipe, and by observing the numerical change of the test pressure gauge, it is judged whether there are cracks or air leakage holes in the corrugated pipe. Before the selection test, the quality inspection is completed to avoid selecting a corrugated pipe with defects, and the comprehensive test selection effect is good.

[0026] Among them, the inlet input mechanism includes a suction pipeline 3, a pump 4 communicated with the suction pipeline 3, a heating part 5 communicated with the pump 4, the outlet end of the heating part 5 is communicated with the inlet test pipeline 8, the suction pipeline 3 is communicated with the water tank 2, and the outlet return mechanism is a return pipeline 6, and the return pipeline 6 is communicated with the water tank 2.

[0027] The inlet input mechanism sucks the liquid water in the water tank 2, and after pressure control and temperature control, it is input into the corrugated pipe through the inlet test pipeline 8. The outlet return mechanism is used for reflux, and cooperates with the outlet test pipeline 9 to transport the liquid at the outlet of the corrugated pipe back to the water tank 2.

[0028] Among them, the inlet test pipeline 8 includes an inlet pipe 81, a temperature detector 82, a pressure gauge 83 and a control valve 84. The temperature detector 82, the pressure gauge 83 and the control valve 84 are all fixed on the inlet pipe 81. The two ends of the inlet pipe 81 are respectively communicated with the first pipe head 10 and the heating part 5. The outlet test pipeline 9 includes an outlet pipe 91, a temperature detector 92, a pressure gauge 93 and a control valve 94. The temperature detector 92, the pressure gauge 93 and the control valve 94 are all fixed on the outlet pipe 91. The two ends of the outlet pipe 91 are respectively communicated with the second pipe head 11 and the return pipeline 6.

[0029] When the inlet test pipeline 8 and the outlet test pipeline 9 are conducting, the temperature and pressure of the liquid water are detected, so as to calculate the inlet and outlet pressure difference and temperature difference, and the control valves 84 and 94 are respectively controlled for on-off.

[0030] Among them, the conduction component 14 includes a fixed cylinder 141, a movable plug 142, a top sleeve rod 143, a communication air duct 144, and a spring 145. The fixed cylinders 141 in the two conduction components 14 are respectively fixed on the tops of the first pipe head 10 and the second pipe head 11. The movable plug 142 is movably sleeved in the fixed cylinder 141. The top sleeve rod 143 is fixedly connected to the top of the movable plug 142. One end of the spring 145 is fixedly connected to the movable plug 142, and the other end is fixedly connected in the fixed cylinder 141. The communication air duct 144 is opened in the movable plug 142. One end of the communication air duct 144 passes through the side surface of the movable plug 142, and the other end penetrates through the top sleeve rod 143 and communicates with the outside.

[0031] There are two sets of conduction components 14. Among them, the conduction component 14 connected to the distribution part 15 is conducted with the first pipe head 10 under the action of air pressure to complete the introduction of the purging air. Among them, the conduction component 14 corresponding to the adjustment control part 16 is conducted with the second pipe head 11 when the adjustment control part 16 drives it to move downwards to complete the export of the purged air and impurities.

[0032] Among them, the air supply component 13 includes a bracket 131, an air pump 132, and an output pipe 133. The air pump 132 is fixed on the bracket 131, and its output end is communicated with the output pipe 133. The air outlet end of the output pipe 133 is communicated with the distribution part 15.

[0033] The air supply component 13 provides pressure control, and respectively realizes purging treatment and expansion clamping treatment under the distribution action. Moreover, through the input of pressure air after purging, the seal detection of the bellows can also be realized.

[0034] Among them, the distribution part 15 includes a reversing valve 151 and a conduction sleeve 152. The air inlet end of the reversing valve 151 is communicated with the output pipe 133. One end of the conduction sleeve 152 is communicated with the reversing valve 151, and the other end is sleeved above the conduction component 14 and outside the top sleeve rod 143.

[0035] The distribution part 15 controls the output direction of the pressure air. When it is introduced into the corresponding conduction component 14, the subsequent seal detection after purging is realized. After being introduced into the connection component 18, the installation clamping is realized.

[0036] Among them, the adjustment control part 16 includes a sleeve plate 161 and an electric push rod 162. The sleeve plate 161 is fixedly sleeved outside the fixed cylinder 141 of the corresponding conduction component 14. The movable end of the electric push rod 162 is fixedly connected to the sleeve plate 161, and controls the movement of the movable plug 142 in the corresponding conduction component 14 through the sleeve plate 161.

[0037] The adjustment control part 16 controls the connection and sealing between the conduction component 14 where it is located and the second pipe head 11 by moving up and down.

[0038] Among them, the installation component 12 includes a connection cover 121, an inner cylinder 122, a locking bolt 123, and an elastic airbag 124. The inner cylinder 122 is fixedly connected inside the connection cover 121. The locking bolt 123 is threadedly sleeved on the outside of the connection cover 121. The elastic airbag 124 is fixedly sleeved on the outside of the inner cylinder 122.

[0039] The installation component 12 realizes rapid clamping and stable sealing by first clamping the base and then expanding and filling, and has a wide installation range for bellows with different pipe diameters.

[0040] Among them, a communication component 18 is provided between the two installation components 12. One end of the communication component 18 is communicated with the distribution part 15. The communication component 18 includes an intermediate pipe 181, a communication port 182, and a communication pipe 183. The intermediate pipe 181 is fixedly connected between the two connection covers 121. The communication port 182 is opened in the connection cover 121 and communicated with the elastic airbag 124, and the communication port 182 is communicated with the intermediate pipe 181. The communication pipe 183 is communicatively arranged between the intermediate pipe 181 and the reversing valve 151.

[0041] Through the cooperation of the communication component 18 and the installation component 12, after the compressed air is introduced into the communication component 18, the elastic expansion of the elastic airbag 124 is controlled in cooperation with the compressed air, and in cooperation with the preliminary locking of the locking bolt 123, the stable fixing and sealing of bellows with different diameters are completed, adapting to the assembly of bellows with different size specifications and having good sealing performance.

[0042] Among them, a test pressure gauge 17 is provided at the bottom of the second pipe head 11.

[0043] The test pressure gauge 17 is used in cooperation with the introduced compressed air to realize the sealing performance detection.

[0044] Working principle and usage process of the present invention: During use, both ends of the corrugated pipe to be tested are sleeved into the connection covers 121 in the two groups of installation components 12 and are sleeved outside the elastic air bags 124. Rotate the locking bolts 123 to preliminarily position the sleeved corrugated pipe. Start the air pump 132 in the air supply component 13. The air pump 132 inputs pressurized air into the distribution part 15. Start the reversing valve 151 so that the pressurized air is input into the communication component 18 and is input into the elastic air bag 124 through the communication pipe 183 and the communication port 182, causing the elastic air bag 124 to inflate and expand and fill the inside of the clamped corrugated pipe, filling the inner space between the corrugated pipe and the inner cylinder 122 to complete sealing, fixation and sealing. Keep the control valve one 84 in the inlet test pipeline 8 closed and the control valve two 94 in the outlet test pipeline 9 closed. Then, make the reversing valve 151 act so that the pressurized air is input into the corresponding conduction component 14 through the conduction sleeve 152. Under the push of the pressurized air, the top sleeve rod 143 moves downward, driving the communication air passage 144 to move downward and communicate with the first pipe head 10. Thus, the pressurized air is introduced into the first pipe head 10 and then into the corrugated pipe. At the same time, start the adjustment control part 16 so that the electric push rod 162 drives the sleeve plate 161 to move downward and controls the top sleeve rod 143 in the connected conduction component 14 to move downward. The communication air passage 144 moves downward and communicates with the second pipe head 11. The pressurized air introduced into the corrugated pipe purges the inner wall of the corrugated pipe, and the internal impurities and dust are purged out through the communication air passage 144 on the side of the second pipe head 11 to complete internal cleaning. Start the electric push rod 162 again to drive the sleeve plate 161 and the top sleeve rod 143 to move upward, so that the corresponding communication air passage 144 is disconnected from the second pipe head 11. As the internal pressure of the corrugated pipe gradually increases, the pressure value of the test pressure gauge 17 increases. Stop the air supply and maintain the stability of the internal pressure of the corrugated pipe. Observe the change in the pressure value of the test pressure gauge 17 within a certain period of time to judge the sealing performance of the corrugated pipe. After internal cleaning and sealing performance detection, turn off the air supply component 13. Start the pump 4 in the inlet input mechanism, suck the water in the water tank 2 into the heating part 5 through the suction pipeline 3 for heating, and then introduce the heated water into the inlet test pipeline 8. The temperature detector one 82 and the pressure gauge one 83 in the inlet test pipeline 8 test the temperature and hydraulic pressure entering the corrugated pipe. As the fluid enters the corrugated pipe and is introduced into the outlet test pipeline 9, the temperature detector two 92 and the pressure gauge two 93 in the outlet test pipeline 9 detect the temperature and pressure at the outlet of the corrugated pipe, calculate the temperature difference and pressure difference, and evaluate the performance of the corrugated pipe to complete the matching test.

[0045] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bellows testing device, comprising a mounting frame (1), a water tank (2), a pressure monitoring mechanism (7), an inlet input mechanism and an outlet return mechanism, characterized in that: One end of the inlet input mechanism is in communication with the water tank (2), and the other end is in communication with an inlet test pipeline (8); one end of the outlet return mechanism is in communication with the water tank, and the other end is in communication with an outlet test pipeline (9); the end of the inlet test pipeline (8) is in communication with a first pipe head (10), and the end of the outlet test pipeline (9) is in communication with a second pipe head (11); the ends of the first pipe head (10) and the second pipe head (11) are both in communication with a mounting assembly (12); and an air supply assembly (13) is provided on one side of the mounting frame (1). A conduction component (14) is installed on the top of the first pipe head (10) and the second pipe head (11); a distribution unit (15) is provided on the top of one of the conduction components (14); and an adjustment control unit (16) is provided on the top of the other conduction component (14); the distribution unit (15) controls a group of conduction components (14) to communicate with the first pipe head (10) through an air supply component (13); the distribution unit (15) is installed and sealed with a bellows through the air supply component (13) and the installation component (12); and the adjustment control unit (16) controls another conduction component (14) to communicate with the second pipe head (11).

2. The bellows testing device according to claim 1, characterized in that: The inlet input mechanism comprises a suction pipeline (3), a pump (4) connected to the suction pipeline (3), and a heating unit (5) connected to the pump (4); the outlet end of the heating unit (5) is connected to an inlet test pipeline (8); the suction pipeline (3) is connected to a water tank (2); and the outlet return mechanism is a return pipeline (6); and the return pipeline (6) is connected to the water tank (2).

3. The bellows testing device according to claim 2, characterized in that: The inlet test pipeline (8) comprises an inlet pipe (81), a temperature detector (82), a pressure gauge (83) and a control valve (84); the temperature detector (82), the pressure gauge (83) and the control valve (84) are all fixed on the inlet pipe (81); the two ends of the inlet pipe (81) are respectively connected to the first pipe head (10) and the heating part (5); the outlet test pipeline (9) comprises an outlet pipe (91), a temperature detector (92), a pressure gauge (93) and a control valve (94); the temperature detector (92), the pressure gauge (93) and the control valve (94) are all fixed on the outlet pipe (91); the two ends of the outlet pipe (91) are respectively connected to the second pipe head (11) and the return pipe (6).

4. The bellows testing device according to claim 3, characterized in that: The conduction assembly (14) comprises a fixed cylinder (141), a movable plug (142), a top sleeve rod (143), a communication air passage (144) and a spring (145). The fixed cylinders (141) in the two conduction assemblies (14) are respectively fixed to the top of the first pipe head (10) and the second pipe head (11). The movable plug (142) is movably sleeved in the fixed cylinder (141). The top sleeve rod (143) is fixedly connected to the top of the movable plug (142). One end of the spring (145) is fixedly connected to the movable plug (142), and the other end is fixedly connected to the fixed cylinder (141). The communication air passage (144) is opened in the movable plug (142). One end of the communication air passage (144) passes through the side of the movable plug (142), and the other end passes through the top sleeve rod (143) and is connected to the outside.

5. The bellows testing device according to claim 4, characterized in that: The air supply assembly (13) comprises a bracket (131), an air pump (132) and an output pipe (133); the air pump (132) is fixed on the bracket (131), and its output end is in communication with the output pipe (133); and the air outlet end of the output pipe (133) is in communication with the distribution portion (15).

6. The bellows testing device according to claim 5, characterized in that: The distribution portion (15) comprises a reversing valve (151) and a conducting sleeve (152); the air inlet end of the reversing valve (151) is in communication with the output pipe (133); one end of the conducting sleeve (152) is in communication with the reversing valve (151), and the other end is sleeved above the conducting assembly (14) and sleeved on the outside of the top sleeve rod (143).

7. The bellows testing device according to claim 6, characterized in that: The regulating control unit (16) comprises a sleeve plate (161) and an electric push rod (162); the sleeve plate (161) is fixedly sleeved on the outside of a fixed cylinder (141) of a corresponding conduction component (14); a movable end of the electric push rod (162) is fixedly connected to the sleeve plate (161), and the movement of the movable plug (142) in the corresponding conduction component (14) is controlled through the sleeve plate (161).

8. The bellows testing device according to claim 1, characterized in that: The mounting assembly (12) comprises a connecting cover (121), an inner cylinder (122), a locking bolt (123) and an elastic airbag (124); the inner cylinder (122) is fixedly connected to the inside of the connecting cover (121); the locking bolt (123) is threadedly sleeved on the outside of the connecting cover (121); and the elastic airbag (124) is fixedly sleeved on the outside of the inner cylinder (122).

9. The bellows testing device according to claim 8, characterized in that: A communication component (18) is provided between the two groups of the mounting components (12); one end of the communication component (18) is in communication with the distribution portion (15); the communication component (18) comprises an intermediate tube (181), a communication port (182) and a communication tube (183); the intermediate tube (181) is fixedly connected between the two connection covers (121); the communication port (182) is provided in the connection cover (121) and is in communication with the elastic airbag (124); the communication port (182) is in communication with the intermediate tube (181); and the communication tube (183) is arranged in communication between the intermediate tube (181) and the reversing valve (151).

10. The bellows testing device according to claim 1, characterized in that: A test pressure gauge (17) is provided at the bottom of the second pipe head (11).

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