A stainless steel corrugated hose pressure resistance testing equipment

Abstract

The present invention belongs to the technical field of performance testing of stainless steel corrugated hoses, and provides a stainless steel corrugated hose pressure resistance testing device. The device opens one sealed end of a stainless steel corrugated hose body, maintains the gas flow inside the stainless steel corrugated hose body, controls the gas discharge amount at the output end of the stainless steel corrugated hose body, simulates the actual usage state of the stainless steel corrugated hose body, and continuously increases the gas volume at the input end of the stainless steel corrugated hose body to observe the pressure resistance of the stainless steel corrugated hose body. Through the above-mentioned pressure resistance testing of the stainless steel corrugated hose body in various states and forms, the device can achieve high-accuracy pressure resistance testing of the stainless steel corrugated hose body.

Description

Technical Field

[0001] The invention belongs to the technical field of stainless steel corrugated hose performance detection, and in particular relates to a stainless steel corrugated hose pressure resistance detection device. Background Art

[0002] Stainless steel corrugated hose is a flexible industrial metal material with good heat and pressure resistance. Classified by use: mainly includes metal bellows, corrugated expansion joints, corrugated heat exchange tubes, diaphragm boxes, etc. Metal bellows are made of thin-walled stainless steel welded pipes through corrugation processing. They are flexible and have good heat and pressure resistance. In life, the most common place where stainless steel corrugated hoses are used is in gas transmission, especially in the connection of household gas. Therefore, there are important requirements for the performance of stainless steel corrugated hoses. Stainless steel corrugated hoses can be used for safe gas transmission, and their pressure resistance is an important indicator for judging whether they are safe.

[0003] Some existing stainless steel corrugated hose pressure resistance testing equipment has limited detection accuracy when performing pressure resistance testing on stainless steel corrugated hoses, that is, in the actual use of stainless steel corrugated hoses, there is continuous gas transmission and operation inside them, but some existing detection devices only place the stainless steel corrugated hose in a static and internal vacuum state for pressure resistance testing, which cannot truly simulate the pressure resistance performance of the stainless steel corrugated hose under actual conditions, and the external form of the stainless steel corrugated hose is also in dynamic change during actual use, that is, according to the different external environments, the stainless steel corrugated hose may be in a variety of forms such as straight and curved. At this time, the pressure resistance of the stainless steel corrugated hose in different forms will also change accordingly, and some existing detection devices generally directly observe the rupture of the stainless steel corrugated hose for the limit judgment of the pressure resistance test of the stainless steel corrugated hose. Directly observing the rupture of the stainless steel corrugated hose is difficult to observe for some small cracks, so omissions may occur, affecting the accurate collection and judgment of the test results. Therefore, in view of the above-mentioned problems, it is urgent to design a solvable technical solution. Summary of the invention

[0004] The purpose of the embodiment of the present invention is to provide a stainless steel corrugated hose pressure resistance detection device to solve the problem.

[0005] The present invention is implemented as follows: a structural diagram of a stainless steel corrugated hose pressure resistance testing device comprises: a pressure resistance testing box, a stainless steel corrugated hose body; a testing box base is installed at the bottom of the pressure resistance testing box, a testing box cover is detachably installed at the top of the pressure resistance testing box, and a testing through hole for the stainless steel corrugated hose body to enter and exit is opened in the middle of the side walls on both sides of the pressure resistance testing box, and metal hose connectors are fixedly installed at both ends of the stainless steel corrugated hose body, and the metal hose connectors are detachably installed in the testing through hole, that is, the metal hose connector and the stainless steel corrugated hose body are connected and installed and the metal hose connector is positioned in the testing through hole, and then the two ends of the stainless steel corrugated hose body are fixed, and the middle part is placed in the pressure resistance testing box to wait for the pressure resistance testing, and a plurality of sets of stainless steel corrugated hose shape adjustment mechanisms are evenly distributed inside the pressure resistance testing box, and the stainless steel corrugated hose shape adjustment mechanisms are mounted on the stainless steel corrugated hose body to adjust the corresponding stainless steel corrugated hose body position. The height and front-to-back position of the stainless steel corrugated hose body are simulated in the actual use process, and the pressure resistance test is carried out in different forms. The outer ends of the metal hose joints on both sides are respectively connected to a vacuum mechanism and a gas pressure resistance detection mechanism. The vacuum mechanism is used to vacuum the inside of the stainless steel corrugated hose body for sealing pressure resistance detection. At the same time, the stainless steel corrugated hose body can clean the inside of the pressure resistance detection box during operation to maintain the cleanliness of the inside of the pressure resistance detection box and reduce the influence of external dust and impurities on the stainless steel corrugated hose body during pressure resistance detection. The gas pressure resistance detection mechanism is used to input colored gas into the stainless steel corrugated hose body, so as to clearly observe the rupture of any part of the stainless steel corrugated hose body. At the same time, the pressure resistance detection mechanism can control the speed of the gas flow inside the stainless steel corrugated hose body, that is, the pressure resistance performance detection of the real simulation of the gas flow inside the stainless steel corrugated hose body.

[0006] The present invention provides a stainless steel corrugated hose pressure resistance testing device, which opens one sealed end of the stainless steel corrugated hose body, maintains the gas flow inside the stainless steel corrugated hose body, and controls the gas discharge amount at the output end of the stainless steel corrugated hose body to simulate the actual usage state of the stainless steel corrugated hose body. At this time, the gas volume at the input end of the stainless steel corrugated hose body is continuously increased to observe the pressure resistance of the stainless steel corrugated hose body. Through the above-mentioned pressure resistance testing of the stainless steel corrugated hose body in various states and forms, the equipment can realize high-accuracy pressure resistance testing of the stainless steel corrugated hose body. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a three-dimensional structural schematic diagram of a stainless steel corrugated hose pressure resistance testing device.

[0008] Figure 2 It is a schematic diagram of the main structure of a stainless steel corrugated hose pressure resistance testing device.

[0009] Figure 3 It is a rear view structural schematic diagram of a stainless steel corrugated hose pressure resistance testing device.

[0010] Figure 4 It is a side view structural diagram of a stainless steel corrugated hose pressure resistance testing device.

[0011] Figure 5 It is a schematic diagram of the top view of the structure of a stainless steel corrugated hose pressure resistance testing device.

[0012] Figure 6 The present invention is a structural schematic diagram of a stainless steel corrugated hose shape adjustment mechanism in a stainless steel corrugated hose pressure resistance testing device.

[0013] Figure 7 for Figure 2 A schematic diagram of the enlarged structure of A1;

[0014] In the accompanying drawings: a pressure test box 10, a test box base 11, a metal hose connector 12, a stainless steel corrugated hose body 13, a test box cover 14, an infusion tube 15, a three-way connector 16, a connecting tube 17, a test gas reflux tube 18, a gas compression device 19, an input flow monitor 20, an output flow monitor 21, a liquid temporary storage bin 22, a piston plate 23, a hydraulic rod 24, a hydraulic cylinder 25, an immersion tube 26, a test gas box 28, a stainless steel corrugated hose shape adjustment mechanism 29, an adjustment ring 30, a positioning inner ring 31, a fixing block 32, a free telescopic rod 33, a nut 34, a screw 35, a rotating rod 36, a rotating handle 37, an observation window 38, an adjusting screw 39, an internal thread groove block 40, a slider 41, a slide rail 42, a swivel 43, a rotating shaft 44, a solenoid valve 45, a one-way valve 46, and a gas flow regulating valve 47. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0016] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0017] like Figure 1-5As shown, it is a structural diagram of a stainless steel corrugated hose pressure resistance testing device provided by an embodiment of the present invention, comprising: a pressure resistance testing box 10, a stainless steel corrugated hose body 13; a testing box base 11 is installed at the bottom of the pressure resistance testing box 10, and a testing box cover 14 is detachably installed at the top of the pressure resistance testing box 10, and a testing through hole for the stainless steel corrugated hose body 13 to enter and exit is opened in the middle of the side walls of both sides of the pressure resistance testing box 10, and metal hose connectors 12 are fixedly installed at both ends of the stainless steel corrugated hose body 13, and the metal hose connector 12 is detachably installed in the testing through hole, that is, the metal hose connector 12 is connected to the stainless steel corrugated hose body 13 and the metal hose connector 12 is positioned in the testing through hole, and then the two ends of the stainless steel corrugated hose body 13 are fixed, and the middle part is placed in the pressure resistance testing box 10 to wait for the pressure resistance testing, and a plurality of groups of stainless steel corrugated hose shape adjustment mechanisms 29 are evenly distributed inside the pressure resistance testing box 10, and the stainless steel corrugated hose shape adjustment mechanisms 29 are set on the stainless steel corrugated hose body 13, and are used to adjust the corresponding The height and front-to-back position of the stainless steel corrugated hose body 13, that is, simulating the actual use of the stainless steel corrugated hose body 13, and performing pressure resistance testing in different states. The outer ends of the metal hose connectors 12 on both sides are respectively connected to a vacuum pumping mechanism and a gas pressure resistance testing mechanism. The vacuum pumping mechanism is used to vacuum the interior of the stainless steel corrugated hose body 13 for sealing pressure resistance testing. At the same time, the stainless steel corrugated hose body 13 can clean the interior of the pressure resistance testing box 10 during operation to maintain the cleanliness of the interior of the pressure resistance testing box 10 and reduce the influence of external dust and impurities on the stainless steel corrugated hose body 13 during pressure resistance testing. The gas pressure resistance testing mechanism is used to input colored gas into the interior of the stainless steel corrugated hose body 13, so as to facilitate clear observation of any rupture of the stainless steel corrugated hose body 13. At the same time, the pressure resistance testing mechanism can control the speed of the gas flow inside the stainless steel corrugated hose body 13, that is, truly simulate the pressure resistance performance test of the gas flow inside the stainless steel corrugated hose body 13;

[0018] Among them, the stainless steel corrugated hose body 13 placed inside the pressure test box 10 is adjusted in the front and back and height positions accordingly through the stainless steel corrugated hose shape adjustment mechanism 29, and then fixed in the detection through holes on both sides of the pressure test box 10 through the metal hose joints 12 at both ends of the stainless steel corrugated hose body 13, and then the vacuum mechanism is operated to remove the air inside the stainless steel corrugated hose body 13, and at the same time, one end of the stainless steel corrugated hose body 13 is sealed, and then the gas pressure resistance detection mechanism continuously inputs colored gas into the stainless steel corrugated hose body 13. As the gas pressure inside the stainless steel corrugated hose body 13 continues to increase, until a rupture occurs on the stainless steel corrugated hose body 13, at this time, the inside of the stainless steel corrugated hose body 13 The gas overflows, and the air pressure inside the stainless steel wave hose body 13 is recorded at this time. The pressure resistance of the stainless steel wave hose body 13 under the sealed state at both ends is detected, and then the sealed end of the stainless steel wave hose body 13 is opened, and then the gas flow inside the stainless steel wave hose body 13 is maintained. By controlling the gas discharge amount at the output end of the stainless steel wave hose body 13, the actual usage state of the stainless steel wave hose body 13 is simulated. At this time, the gas amount at the input end of the stainless steel wave hose body 13 is continuously increased, and the pressure resistance inside the stainless steel wave hose body 13 is observed. Through the above-mentioned pressure resistance detection of the stainless steel wave hose body 13 in various states and forms, the equipment can realize high-accuracy pressure resistance detection of the stainless steel wave hose body 13.

[0019] In the embodiment of the present invention, the stainless steel corrugated hose shape adjustment mechanism 29 can be operated in advance to adjust the shape of the stainless steel corrugated hose body 13, so as to prevent the two ends of the stainless steel corrugated hose body 13 from being unable to stretch after the metal hose connector 12 is fixed. In addition, since the stainless steel corrugated hose body 13 itself has a certain expansion and contraction ability, the stainless steel corrugated hose body 13 placed in the pressure resistance test box 10 can continuously adjust the shape of the stainless steel corrugated hose body 13 during the test, thereby fully simulating the pressure resistance test of the stainless steel corrugated hose body 13 in various shapes, and the metal hose connector 12 The connection with the detection through hole through the buckle facilitates the installation and disassembly between the two, that is, different lengths of stainless steel corrugated hose body 13 are selected for detection, which is conducive to adjusting the stainless steel corrugated hose body 13 in different forms. In order to facilitate intuitive observation of the test results inside the pressure test box 10, the side wall of the pressure test box 10 is provided with an observation window 38 of a transparent structure, and four bayonet pins are installed at the four corners of the bottom of the test box cover 14. The top of the pressure test box 10 corresponding to the bayonet pin is provided with a slot. The bayonet pin is connected in the slot to realize the detachable installation of the test box cover 14 and the pressure test box 10.

[0020] In one embodiment of the present invention, the gas pressure resistance detection mechanism includes a three-way joint 16 and a connecting pipe 17 connected to the outer ends of the metal hose joints 12 on both sides. The bottom end of the three-way joint 16 is connected to a detection gas box 28 fixed on the detection box base 11. The output end of the detection gas box 28 is provided with a pressure pump for controlling the air pressure input into the three-way joint 16. The end of the connecting pipe 17 is connected to a detection gas reflux pipe 18. A gas flow regulating valve 47 is provided at the connection between the connecting pipe 17 and the detection gas reflux pipe 18. The gas flow regulating valve 47 is used to control the amount of gas input into the detection gas reflux pipe 18, that is, to control whether the interior of the stainless steel corrugated hose body 13 is in a sealed state or in a gas flowing state. The end of the detection gas return pipe 18 is connected to a gas compression device 19 fixed on the detection box base 11 on one side of the detection gas box 28, and the output end of the gas compression device 19 is connected to the detection gas box 28. The gas transmitted to the inside of the gas compression device 19 through the detection gas return pipe 18 is pressurized and input into the detection gas box 28 for repeated use. The pressurization speed of the maximum gas flow input into the detection gas return pipe 18 by the gas compression device 19 is much greater than the delivery volume of the detection gas return pipe 18, that is, it is ensured that the gas compression device 19 will not affect the speed of the gas flow inside the stainless steel corrugated hose body 13, thereby affecting the pressure resistance test inside the stainless steel corrugated hose body 13;

[0021] The detection gas box 28 stores ozone gas, which is non-toxic and odorless and turns dark blue when in contact with air. It is input into the stainless steel corrugated tube body 13 for pressure resistance testing. Once the stainless steel corrugated tube body 13 is broken somewhere and the ozone inside directly overflows and comes into contact with the air inside the pressure resistance test box 10, the location of the break in the stainless steel corrugated tube body 13 can be quickly and intuitively found.

[0022] As a preferred embodiment of the present invention, the vacuum mechanism includes a liquid temporary storage bin 22 opened inside the test box base 11 corresponding to the bottom of the pressure test box 10, and the liquid temporary storage bin 22 is connected to a liquid return pipe on the side facing the connecting pipe 17, and the top of the liquid return pipe is connected to the connecting pipe 17. The top of the three-way joint 16 is connected to an infusion pipe 15, and the other end of the infusion pipe 15 movably passes through the test box cover 14 to extend to the inside of the pressure test box 10 and is connected to an immersion pipe 26. The bottom end of the immersion pipe 26 is placed at the bottom of the pressure test box 10, and a water pump is provided on the infusion pipe 15 located on the top surface of the test box cover 14, that is, Start the water pump to input the liquid inside the pressure test box 10 into the liquid infusion tube 15 through the filter screen, and then close the output end of the detection gas box 28 at this time, and the liquid inside the liquid infusion tube 15 is input into the stainless steel corrugated hose body 13 along the metal hose connector 12. At this time, the connection between the connecting pipe 17 and the detection gas return pipe 18 is also in a closed state, and then the liquid output from the stainless steel corrugated hose body 13 flows into the liquid return pipe, and then input into the liquid temporary storage bin 22. By passing the liquid through the stainless steel corrugated hose body 13, the air inside the stainless steel corrugated hose body 13 can be removed to achieve the purpose of vacuum;

[0023] A one-way valve 46 is provided inside the liquid return pipe to prevent the liquid entering the liquid temporary storage bin 22 from flowing back into the liquid return pipe;

[0024] The infusion tube 15 is provided with an input flow monitor 20 for monitoring the flow of liquid input into the stainless steel corrugated hose body 13, and the liquid return tube is provided with an output flow monitor 21 for monitoring the flow of liquid output from the stainless steel corrugated hose body 13. The input flow monitor 20 and the output flow monitor 21 are used to compare the input liquid flow and the output flow inside the stainless steel corrugated hose body 13, so as to ensure that the air inside the stainless steel corrugated hose body 13 can be accurately cleared and liquid can be prevented from remaining inside the stainless steel corrugated hose body 13, which affects the accuracy of the subsequent pressure resistance test of the stainless steel corrugated hose body 13;

[0025] The top of the liquid temporary storage bin 22 on one side facing the liquid return pipe is connected to the bottom of the pressure test box 10, and a piston plate 23 is provided inside the liquid temporary storage bin 22 to control the liquid inside the liquid temporary storage bin 22 to return to the pressure test box 10. A hydraulic rod 24 is connected to the middle of the end of the piston plate 23 away from the liquid return pipe, and a hydraulic cylinder 25 is installed at the end of the hydraulic rod 24, that is, the hydraulic cylinder 25 is started to control the extension and contraction of the hydraulic rod 24, and then the piston plate 23 is driven to move laterally inside the liquid temporary storage bin 22. The width and height of the piston plate 23 are the same as the corresponding width and height inside the liquid temporary storage bin 22, and the outer surface of the piston plate 23 is wrapped with a sealing ring, that is, when the piston plate 23 moves laterally, the flow of liquid on the side away from the hydraulic rod 24 can be controlled. At this time, the liquid temporary storage bin 22 is connected to the bottom of the pressure test box 10, and a one-way valve 46 is provided in the liquid return pipe. At this time, the liquid can be returned to the pressure test box 10 for reuse.

[0026] As a preferred embodiment of the present invention, by controlling the flow of liquid among the pressure test box 10, the infusion tube 15, the stainless steel corrugated hose body 13, the connecting tube 17, the liquid reflux pipe, and the liquid temporary storage bin 22, the inside of the pressure test box 10 can be cleaned to a certain extent. At the same time, since ozone is selected as the gas for pressure resistance testing of the stainless steel corrugated hose body 13, when its concentration is too high, it will generate high heat when it comes into contact with oxygen in the air, which is prone to danger. At this time, by arranging liquid at the bottom of the pressure test box 10 and using the flow of liquid to reduce the surface temperature of various places before testing, the heat temperature generated by the contact between ozone and air can be reduced to a certain extent. Moreover, since the liquid is mainly used for vacuuming, some low-temperature liquids such as water can be directly used when selected.

[0027] As a preferred embodiment of the present invention, solenoid valves are provided on both ends of the three-way joint 16, the end of the connecting pipe 17, the liquid reflux pipe, and the detection gas reflux pipe 18, that is, the flow of gas or liquid between the pipes is controlled by the solenoid valves.

[0028] See also Figure 6-7 As a preferred embodiment of the present invention, the stainless steel corrugated hose shape adjustment mechanism 29 includes a plurality of equally spaced screws 35 rotatably arranged at the bottom of the pressure test box 10 and distributed along the front-to-back direction, and rotating rods 36 are installed at both ends of the screw 35, wherein the rotating rod 36 at one end is rotatably connected to the inner wall of the pressure test box 10, and the rotating rod 36 at the other end is movable through the wall of the pressure test box 10 and is connected to a rotating handle 37 outwardly, that is, the screw 35 is driven to rotate by manually rotating the rotating handle 37, and the movable connection between the rotating rod 36 and the wall of the pressure test box 10 is provided with sealing rings inside and outside, so as to prevent the liquid inside the pressure test box 10 from leaking;

[0029] The screw 35 is threadedly connected with a nut 34, and the nut 34 is provided with a phase guide device for limiting its rotation. A free telescopic rod 33 is installed on the top of the nut 34, and an adjusting ring 30 is installed on the top of the free telescopic rod 33. The aperture of the adjusting ring 30 is larger than the diameter of the stainless steel wave hose body 13, and the stainless steel wave hose body 13 to be detected passes through the inside of the adjusting ring 30, and then the adjusting ring 30 moves while adjusting the shape of the stainless steel wave hose body 13 at the corresponding position. A fixed block 32 is installed on the top of the adjusting ring 30, and a rotating groove is opened on the top of the fixed block 32. A rotating shaft 44 is rotatably connected inside the rotating groove. An adjusting screw 39 is installed on the top of the rotating shaft 44. The top of the adjusting screw 39 corresponds to A sliding opening along the front-to-back direction is provided on the cover 14 of the detection box, and the upper side of the adjusting screw 39 passes through the sliding opening and is threadedly connected to an internal thread groove block 40. At the same time, a rotating ring 43 is installed on the top of the adjusting screw 39, that is, the rotating ring 43 is manually rotated to drive the adjusting screw 39 to rotate in the internal thread groove block 40, and then the adjusting screw 39 is controlled to rise and fall, thereby driving the adjusting ring 30 at the bottom end of the rotating shaft 44 to rise and fall, and then the stainless steel corrugated hose body 13 passing through the inside of the adjusting ring 30 is adjusted to adjust the height. At the same time, when the nut 34 moves along the screw 35, the front and rear positions of the stainless steel corrugated hose body 13 are adjusted, so as to realize the pressure resistance test of the stainless steel corrugated hose body 13 in different forms;

[0030] Since the structure of the outer side of the stainless steel corrugated hose body 13 is corrugated, in order to reduce the sliding between the two after the adjusting ring 30 is installed thereon, a circle of positioning inner ring 31 is provided on the inner side of the adjusting ring 30, and the cross-section of the positioning inner ring 31 is provided as an isosceles triangle structure. The embedded positioning between the positioning inner ring 31 and the corrugation of the stainless steel corrugated hose body 13 is utilized to reduce the sliding between the adjusting ring 30 and the stainless steel corrugated hose body 13.

[0031] In order to ensure that the internal thread groove block 40 can move stably along the slide, sliders 41 are installed at the bottom of both sides of the internal thread groove block 40, and a slide rail 42 is provided on the top of the detection box cover 14 corresponding to the slider 41. The slider 41 is slidably connected in the slide rail 42, and the vertical section of the slider 41 and the slide rail 42 is set to a T-shaped structure for maintaining the longitudinal stability of the two when sliding.

[0032] The above embodiment of the present invention provides a stainless steel corrugated hose pressure resistance testing device. When in use, the middle section of the stainless steel corrugated hose body 13 to be tested is placed inside the pressure resistance testing box 10, and then the metal hose connectors 12 are installed at both ends thereof, and then the metal hose connectors 12 are fixed in the testing through hole, and then the stainless steel corrugated hose body 13 is subjected to a pressure resistance test: (1) The stainless steel corrugated hose body 13 is subjected to a sealed pressure resistance test, firstly the interior of the stainless steel corrugated hose body 13 is vacuumed, and the liquid inside the pressure resistance testing box 10 is transferred to the infusion tube 15 along the immersion tube 26 by starting the water pump. At this time, the connection between the detection gas box 28 and the three-way connector 16 is closed, and the connection between the connecting tube 17 and the detection gas return tube 18 is closed, and then the flow rate of the liquid passing through the input flow monitor 20 and the output flow monitor 21 is observed to confirm the pressure resistance of the stainless steel corrugated hose body 13. Ensure that the liquid input into the stainless steel corrugated hose body 13 can completely discharge the air, and then the liquid output from the stainless steel corrugated hose body 13 flows into the liquid temporary storage bin 22 through the liquid reflux pipe. At this time, the end of the connecting pipe 17 is closed, and then the rotating ring 43 and the rotating handle 37 are manually controlled to rotate, and then the stainless steel corrugated hose body 13 inside the corresponding adjustment ring 30 is controlled to adjust the front and back and the height, and the shape of the stainless steel corrugated hose body 13 is changed, and then the pressure pump on the detection gas box 28 is started to transport the gas inside the stainless steel corrugated hose body 13. Then, as the gas pressure inside the stainless steel corrugated hose body 13 continues to increase, until a rupture occurs on the stainless steel corrugated hose body 13, the gas inside the stainless steel corrugated hose body 13 overflows, and the overflowed ozone reacts with the air to present a dark blue color, which is directly observed from the outside, and the air pressure inside the stainless steel corrugated hose body 13 is recorded at this time, so as to detect the pressure resistance of the stainless steel corrugated hose body 13 in a sealed state;

[0033] A gas flow type pressure resistance test is performed on the stainless steel corrugated hose body 13, and the above-mentioned vacuum treatment is repeated on the interior of the stainless steel corrugated hose body 13. When the interior of the stainless steel corrugated hose body 13 is in a vacuum state, the connecting pipe 17 and the liquid reflux pipe are closed, and the solenoid valve 45 connected to the connecting pipe 17 is opened. At this time, the opening size of the gas flow regulating valve 47 is controlled, and then the air pressure pump on the detection gas box 28 is started to supply gas to the interior of the stainless steel corrugated hose body 13, and the shape of the stainless steel corrugated hose body 13 is adjusted before the test, and then the gas flowing inside the stainless steel corrugated hose body 13 is transmitted to the gas compression device 19 through the detection gas reflux pipe 18, and then compressed by the gas compression device 19 and returned to the detection gas box 28. By controlling the difference in gas flow between the gas flow regulating valve 47 and the air pressure pump, the pressure situation inside the stainless steel corrugated hose body 13 under real conditions is simulated, and then the pressure resistance limit that the stainless steel corrugated hose body 13 can withstand under various conditions is tested.

[0034] The stainless steel corrugated hose body 13 placed inside the pressure test box 10 is adjusted to the corresponding front and rear and height positions through the stainless steel corrugated hose shape adjustment mechanism 29, and then fixed to the detection through holes on both sides of the pressure test box 10 through the metal hose joints 12 at both ends of the stainless steel corrugated hose body 13, and then the vacuum mechanism is operated to remove the air inside the stainless steel corrugated hose body 13, and at the same time, one end of the stainless steel corrugated hose body 13 is sealed, and then the gas pressure resistance detection mechanism continuously inputs colored gas into the stainless steel corrugated hose body 13, and as the gas pressure inside the stainless steel corrugated hose body 13 continues to increase, until a rupture occurs on the stainless steel corrugated hose body 13, the gas inside the stainless steel corrugated hose body 13 overflows at this time, and the air pressure inside the stainless steel corrugated hose body 13 is recorded at this time, and the pressure resistance of the stainless steel corrugated hose body 13 under the sealed state at both ends is detected;

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A stainless steel corrugated hose pressure resistance testing device, characterized in that: The pressure resistance testing equipment for the stainless steel corrugated hose comprises: a pressure resistance testing box (10) and a stainless steel corrugated hose body (13); a testing box base (11) is installed at the bottom of the pressure resistance testing box (10); a testing box cover (14) is detachably installed at the top of the pressure resistance testing box (10); a testing through hole for the stainless steel corrugated hose body (13) to enter and exit is opened in the middle of the side walls of both sides of the pressure resistance testing box (10); metal hose connectors (12) are fixedly installed at both ends of the stainless steel corrugated hose body (13); and the metal hose connectors (12) are detachably installed in the testing through hole; The stainless steel corrugated hose shape adjustment mechanism (29) is provided in multiple groups and is evenly distributed inside the pressure test box (10). The stainless steel corrugated hose shape adjustment mechanism (29) is sleeved on the stainless steel corrugated hose body (13) and is used to adjust the height and front-to-back position of the corresponding stainless steel corrugated hose body (13); A vacuum pumping mechanism connected to the outer end of the metal hose connector (12) on one side, used to vacuum the interior of the stainless steel corrugated hose body (13) to perform a sealing pressure resistance test; A gas pressure resistance detection mechanism is connected to the outer end of the metal hose connector (12) on the other side and is used to input colored gas into the interior of the stainless steel corrugated hose body (13). The pressure resistance detection mechanism controls the flow speed of the gas inside the stainless steel corrugated hose body (13) and truly simulates the pressure resistance performance detection when the gas flows inside the stainless steel corrugated hose body (13); The stainless steel corrugated hose shape adjustment mechanism (29) comprises a plurality of screws (35) rotatably arranged at equal intervals on the bottom of the pressure test box (10) and distributed along the front-to-back direction, and rotating rods (36) are installed at both ends of the screws (35), wherein the rotating rod (36) at one end is rotatably connected to the inner wall of the pressure test box (10), and the rotating rod (36) at the other end is movable through the wall of the pressure test box (10) and is connected to a rotating handle (37) outwardly; The lead screw (35) is threadedly connected with a nut (34), and the nut (34) is provided with a phase guide device for limiting its rotation. A free telescopic rod (33) is installed on the top of the nut (34), and an adjusting ring (30) is installed on the top of the free telescopic rod (33). The aperture of the adjusting ring (30) is larger than the diameter of the stainless steel corrugated hose body (13). A fixed block (32) is installed on the top of the adjusting ring (30). A rotating groove is opened on the top of the fixed block (32). A rotating shaft (44) is rotatably connected inside the rotating groove. An adjusting screw (39) is installed on the top of the rotating shaft (44). A sliding opening along the front-to-back direction is opened on the detection box cover (14) corresponding to the top of the adjusting screw (39). The upper side of the adjusting screw (39) passes through the sliding opening and is threadedly connected to an internal thread groove block (40) upward. A rotating ring (43) is installed on the top of the adjusting screw (39); A circle of positioning inner ring (31) is arranged inside the adjusting ring (30), and the cross section of the positioning inner ring (31) is arranged to be an isosceles triangle structure.

2. The stainless steel corrugated hose pressure resistance testing equipment according to claim 1 is characterized in that: The side wall of the pressure test box (10) is provided with an observation window (38) of a transparent structure, and four latches are installed at the four corners of the bottom of the test box cover (14). The top of the pressure test box (10) corresponding to the latches is provided with a latch slot, and the latch pins are latched in the latch slot.

3. The stainless steel corrugated hose pressure resistance testing equipment according to claim 1 is characterized in that: The gas pressure resistance detection mechanism comprises a three-way joint (16) and a connecting pipe (17) connected to the outer ends of the metal hose joints (12) on both sides; the bottom end of the three-way joint (16) is connected to a detection gas box (28) fixed on the detection box base (11); a pressure pump is provided at the output end of the detection gas box (28); the end of the connecting pipe (17) is connected to a detection gas return pipe (18); a gas flow regulating valve (47) is provided at the connection point between the connecting pipe (17) and the detection gas return pipe (18); the end of the detection gas return pipe (18) is connected to a gas compression device (19) fixed on the detection box base (11) on one side of the detection gas box (28); and the output end of the gas compression device (19) is connected to the detection gas box (28).

4. The stainless steel corrugated hose pressure resistance testing equipment according to claim 3 is characterized in that: The detection gas box (28) stores ozone gas inside.

5. The stainless steel corrugated hose pressure resistance testing equipment according to claim 4, characterized in that: The vacuum pumping mechanism comprises a liquid temporary storage bin (22) provided inside the test box base (11) corresponding to the bottom of the pressure test box (10); a liquid return pipe is connected to the liquid temporary storage bin (22) on one side facing the connecting pipe (17); the top end of the liquid return pipe is connected to the connecting pipe (17); the top end of the three-way connector (16) is connected to a liquid infusion pipe (15); the other end of the liquid infusion pipe (15) movably passes through the test box cover (14) and extends into the pressure test box (10) and is connected to an immersion pipe (26); the bottom end of the immersion pipe (26) is placed at the bottom of the pressure test box (10); a water pump is provided on the liquid infusion pipe (15) located on the top surface of the test box cover (14); and the liquid inside the liquid infusion pipe (15) is input into the stainless steel corrugated hose body (13) along the metal hose connector (12).

6. The stainless steel corrugated hose pressure resistance testing equipment according to claim 5, characterized in that: The infusion tube (15) is provided with an input flow monitor (20) for monitoring the flow of liquid input into the stainless steel corrugated hose body (13), and the liquid return tube is provided with an output flow monitor (21) for monitoring the flow of liquid output from the stainless steel corrugated hose body (13).

7. The stainless steel corrugated hose pressure resistance testing equipment according to claim 6, characterized in that: The top of the liquid temporary storage bin (22) facing the liquid return pipe is in communication with the bottom of the pressure test box (10), and a piston plate (23) is provided inside the liquid temporary storage bin (22) for controlling the liquid inside the liquid temporary storage bin (22) to return to the pressure test box (10). A hydraulic rod (24) is connected to the middle of one end of the piston plate (23) away from the liquid return pipe, and a hydraulic cylinder (25) is installed at the end of the hydraulic rod (24). The width and height of the piston plate (23) are the same as the corresponding width and height of the inside of the liquid temporary storage bin (22).

8. The stainless steel corrugated hose pressure resistance testing equipment according to claim 7 is characterized in that: Solenoid valves are provided on both ends of the three-way joint (16), the end of the connecting pipe (17), the liquid reflux pipe, and the detection gas reflux pipe (18).

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