Device and method for testing water pressure deformation of composite cylinder

Abstract

The invention discloses a water pressure deformation testing device for a composite material cylinder. The water pressure deformation testing device comprises a water injection pressurizing end capable of being arranged at one end of the composite material cylinder, a sealing end capable of being arranged at the other end of the composite material cylinder, and a tightening device capable of locking the composite material cylinder, and a plurality of groups of deformation test stands are arranged on the peripheral surface of the composite material cylinder. The deformation of the composite material cylinder during the water pressure test can be detected, and the detection efficiency and precision are high. The invention further discloses a water pressure deformation testing method for the composite material cylinder, so that the deformation quantity of the composite material cylinder in the water pressure testing process can be accurately detected.

Description

Technical Field

[0001] The invention relates to the technical field of composite material cylinder deformation testing, and in particular to a composite material cylinder water pressure deformation testing device and a testing method. Background Art

[0002] Composite materials have the advantages of high specific modulus, high specific strength and good designability, and are widely used in engineering, including common composite pressure vessels and cylinders. This type of composite cylinder must provide sufficient strength while also considering the special conditions and environment of its application. There are often special substances inside, which requires the composite cylinder itself to have strict pressure-bearing capacity. Therefore, in the early stage of application, the composite cylinder needs to be tested for its pressure-bearing performance, but the 4.0Mpa water pressure test on the composite cylinder belongs to the explosion-proof field. During the test, personnel cannot enter the test site and cannot detect the deformation of the composite cylinder.

[0003] Through searching, no patents and documents related to the present invention have been found.

[0004] Therefore, there is an urgent need for a composite material cylinder water pressure deformation testing device and a testing method to detect the deformation of the composite material cylinder. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a composite material cylinder water pressure deformation testing device and testing method in view of the inability to detect the deformation of the composite material cylinder during the water pressure test in the prior art.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a water pressure deformation testing device for a composite material cylinder, the water pressure deformation testing device includes a water injection and pressurizing end that can be set at one end of the composite material cylinder, a sealing end that can be set at the other end of the composite material cylinder and a tightening device that can lock the composite material cylinder; a plurality of deformation test benches are provided on the outer peripheral surface of the composite material cylinder.

[0007] Furthermore, the water injection and pressurizing end includes a rear flange of the cylinder, a water injection and pressurizing end cover, a pressurizing port and a water injection port; one end of the rear flange of the cylinder is connected to one end of the composite material cylinder, and the pressurizing end cover is sealed at the other end of the rear flange of the cylinder, and the pressurizing port and the water injection port are arranged on the water injection and pressurizing end cover and are both connected to the inner cavity of the composite material cylinder.

[0008] Furthermore, the sealing end includes a front flange of the cylinder, a sealing end cover plate and a clamping ring; one end of the front flange of the cylinder is connected to the other end of the composite cylinder, and the sealing end cover plate is locked to the front flange of the cylinder by using the clamping ring, so that the sealing end cover plate blocks the port at the other end of the front flange of the cylinder.

[0009] Furthermore, the clamping ring is a split structure, including a plurality of arc blocks, and locking pieces are provided between the ends of adjacent arc blocks. The locking pieces can be used to lock the plurality of arc blocks into a full circular ring, thereby forming a clamping ring.

[0010] Furthermore, the tightening device comprises a cylinder support platform and a cylinder support hoop clamp arranged on the cylinder support platform; the cylinder support hoop clamp is used to lock and fix the composite material cylinder on the cylinder support platform.

[0011] Furthermore, the cylinder support platform includes cylinder support platform one and cylinder support platform two; the cylinder support hoop clamp includes cylinder support hoop clamp one and cylinder support hoop clamp two, the cylinder support platform one and cylinder support hoop clamp one are connected by a lifting device, and the cylinder support hoop clamp can move up and down vertically under the drive of the lifting device, at this time, the cylinder support platform two and the cylinder support hoop clamp two are movably connected, so that the composite material cylinder can reach a horizontal state or an inclined state.

[0012] Furthermore, each group of the deformation test bench includes multiple detection heads, multiple detection head brackets and a test bench; one end of the detection head bracket is connected to the test bench, and the other end is connected to the detection head; the detection head bracket is a retractable structure; the detection is distributed on the outer circumference of the composite material cylinder and can contact the test points on the outer circumference of the composite material cylinder.

[0013] The present invention also provides a composite material cylinder water pressure deformation test method, using the composite material cylinder water pressure deformation test device to perform the test, the test steps are: S1. Connect the rear flange of the cylinder at the water injection and pressurization end and the front flange of the cylinder at the sealing end to the two ends of the composite material cylinder; S2. Place the composite cylinder connected with the cylinder front flange and the cylinder rear flange on the tightening device in the test site, install the water injection and pressurization end cover plate of the water injection and pressurization end on the cylinder rear flange, install the sealing end cover plate of the sealing end on the cylinder front flange, and then clamp the composite cylinder to the tightening device using the tightening device; S3, injecting water into the inner cavity of the composite material cylinder through the water injection and pressure end until the inner cavity is full of water; S4. After stopping water injection, close the exhaust valve at the sealing end, tighten the water injection plug at the water injection port at the water injection and pressurization end, and then connect the output pressure port of the hydraulic pressure testing machine with the pressure port at the pressurization end; S5. Move the multiple deformation test benches to the outer periphery of the composite material cylinder, adjust the detection head to make it contact with the test point on the outer periphery of the composite material cylinder; then start the pressurizing unit to test the pressure inside the composite material cylinder through the pressurizing port, and use the detection head and the camera device to detect the deformation amount.

[0014] Furthermore, S3 is specifically as follows: when water is injected into the inner cavity of the composite material cylinder through the water injection and pressurizing end, the lifting device of the tightening device is slowly lifted, and the cylinder support ring hoop clamp ring 1 can move up and down vertically under the drive of the lifting device, and the cylinder support platform 2 and the cylinder support ring hoop clamp 2 are movably connected, so that the composite material cylinder locked on the tightening device is in an inclined state, and then the exhaust valve is opened, the water injection plug is unscrewed, and the pressurizing port is blocked with a ball valve at this time, and the water injection port is connected to the pressurizing unit for water injection. When a water column appears in the exhaust valve, the lifting device of the tightening device is slowly lowered, and the tightening device drives the composite material cylinder to return to a horizontal state, and water injection is continued until the exhaust valve is full and then the water injection is stopped.

[0015] Furthermore, S5 is specifically as follows: each set of deformation test benches needs to debug the detection head at one end of the detection head bracket to contact the test point on the outer peripheral surface of the composite material cylinder, so that the digital laser rangefinder at the test point can accurately dock with the test point, and then turn on the pressurizing unit to gradually pressurize the pressurizing port at the pressurizing end to 4.0Mpa. After pressurizing to 4.0Mpa, stabilize the pressure for 10-60S, and use a camera to collect the deformation of the composite material cylinder detected by the detection head in real time.

[0016] Compared with the prior art, the beneficial technical effect of the present invention is that the water pressure testing device of the composite material cylinder of the present invention can detect the deformation of the key load-bearing area of ​​the composite material cylinder in real time during the water pressure test, and has good sealing effect and high detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a composite material cylinder water pressure deformation testing device according to an embodiment of the present invention; Figure 2 It is a structural schematic diagram of a pressurizing end of an embodiment of the present invention; Figure 3 It is a structural schematic diagram of the sealing end of an embodiment of the present invention; Figure 4 for Figure 3 A partial enlarged view of the middle C part; Figure 5 for Figure 3 Schematic diagram of the cross section of AA in FIG. Figure 6 for Figure 1 Schematic diagram of the cross section of the deformation test bench of the middle BB; Figure 7 This is a schematic structural diagram of a composite material cylinder connected to a pressurizing end, a sealing end and a tightening device according to an embodiment of the present invention; Figure 8 It is a schematic diagram of a water pressure deformation testing device when the tightening device is raised to inject water into the composite material cylinder according to an embodiment of the present invention; Fig. 9It is a schematic diagram of the structure of the hydraulic pressure deformation test of the embodiment of the invention; In the figure: 1. Water injection and pressurizing end, 11. Water injection and pressurizing end cover, 111. Pressurizing port, 112. Water injection port, 113. Pressurizing end cover handrail, 12. Cylinder rear flange, 2. Sealing end, 21. Sealing end cover, 211. Exhaust valve, 212. Groove 1, 213. Groove 2, 214. Sealing end cover handrail, 215. Toothed ring 1, 22. Tightening ring, 221. Arc block 1, 2211. Wedge groove 1, 222. Arc block 2, 2221. Wedge groove 2, 223. Locking block, 2 231. Wedge block one, 2232. Wedge block two, 224. Tightening ring handle, 225. Toothed ring two, 23. Cylinder front flange, 3. Tightening device, 31. Cylinder support platform one, 32. Cylinder support platform two, 33. Cylinder support ring clamp one, 34. Cylinder support ring clamp two, 35. Lifting device, 4. Deformation test bench, 41. Detection head bracket, 42. Detection head, 43. Detection stand, 5. Composite material cylinder, 6. Water injection unit, 7. Pressurization unit, 8. Camera device. DETAILED DESCRIPTION

[0018] To make the purpose, technical solution and advantages of the embodiments of the invention more clear, the following will be combined with the appended drawings of the embodiments of the invention to Figure 1-9 , clearly and completely describe the technical solutions of the embodiments of the invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0019] It should be noted that all directional indications (such as up, down, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship of the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. Example

[0020] like Figure 1 As shown, the water pressure deformation testing device for the composite material cylinder provided in the present application includes a water injection and pressurizing end 1 connected to one end of the composite material cylinder 5, a sealing end 2 connected to the other end of the composite material cylinder 5, a tightening device 3 for locking the composite material cylinder 5, and multiple sets of deformation testing benches 4 arranged on the outer peripheral surface of the composite material cylinder 5.

[0021] When the composite cylinder 5 is subjected to a water pressure deformation test, the composite cylinder is locked on the tightening device 3 by the tightening device 3; then one end of the composite cylinder 5 is sealed by the water injection pressurizing end 1, and the other end of the composite cylinder 5 is sealed by the sealing end 2; then the above-mentioned assembled device is moved to the test site, and the inner cavity of the composite cylinder 1 is filled with water by the water injection pressurizing end 1, and then the composite cylinder 5 is in a horizontal and sealed state, and multiple sets of deformation test benches 4 are placed at the test position on the outer peripheral surface of the composite cylinder 5, and then the water injection pressurizing end 1 of the composite cylinder 5 is pressurized to perform a water pressure deformation test, and the multiple sets of deformation test benches 4 detect the test position on the outer peripheral surface of the composite cylinder, so as to obtain the deformation of the composite cylinder before and after the test. The water pressure deformation test device of the present application solves the problem of being unable to detect the deformation of the composite cylinder 5 before and after the test.

[0022] like Figure 2 As shown, the water injection and pressurizing end 1 includes a water injection and pressurizing end cover plate 11, a cylinder rear flange 12, a pressurizing port 111 and a water injection port 112; one end of the cylinder rear flange 12 is connected to one end of the composite cylinder 4, and the pressurizing end cover plate 11 is sealed at the other end of the cylinder rear flange 12. The pressurizing port 111 and the water injection port 112 are arranged on the water injection and pressurizing end cover plate 11 and are both connected to the inner cavity of the composite cylinder 5. By installing the water injection and pressurizing end 1 at the end of the composite cylinder 5, one end of the composite cylinder 5 can be sealed, and it can also help the subsequent water pressure deformation test to perform water injection and pressurization operations on the composite cylinder 5. It should be noted that in this embodiment, the water injection and pressurizing end cover plate and the cylinder rear flange are sealed on the cylinder rear flange port through peripheral bolts.

[0023] like Figure 3 As shown, the sealing end 2 includes a sealing end cover plate 21, a clamping ring 22 and a cylinder front flange 23; one end of the cylinder front flange 23 is connected to the other end of the composite cylinder 5, and the sealing end cover plate 21 is locked to the cylinder front flange 23 by using the clamping ring 22, so that the sealing end cover plate 21 blocks the port at the other end of the cylinder front flange 23, thereby forming a seal for the other end of the composite cylinder 5.

[0024] By installing the water injection and pressurizing end 1 and the sealing end 2 on both ends of the composite material cylinder 5, the composite material cylinder 5 is placed in a sealed space, which is beneficial to the smooth progress of subsequent tests.

[0025] like Figure 3As shown, the clamping ring 22 is a split structure, including a plurality of arc blocks, and a locking member is provided between the ends of adjacent arc blocks, through which the plurality of arc blocks can be locked to form a full circle ring, thereby forming a clamping ring. The clamping ring is designed in sections and each arc block has two clamping ring handles 224, in order to facilitate installation when clamping the sealing end cover.

[0026] like Figure 4 As shown, wedge-shaped groove 1 2211 and wedge-shaped groove 2 2221 are correspondingly provided at the ends of adjacent arc-shaped blocks 1 221 and 222, and the locking member includes a locking block 223, and also includes two wedge-shaped blocks 1 2231 and two wedge-shaped blocks 2232 arranged on the locking block 223.

[0027] The specific operation of locking multiple arc blocks into a clamping ring is as follows: insert the wedge block 1 2231 of the locking block 223 into the wedge groove 1 2211, insert the wedge block 2 2232 of the locking block 223 into the wedge groove 2212, and match the inclined surface of the wedge groove 1 2211 with the wedge surface of the wedge block 1 2231, and the inclined surface of the wedge groove 2221 with the wedge surface of the wedge block 2 2232, and then use bolts to fix the locking block 223 between the arc block 1 221 and the arc block 2 222. Thus, the arc block 1 221 and the arc block 2 222 are locked, and then the multiple arc blocks are locked in sequence to lock the multiple arc blocks into a clamping ring.

[0028] like Figure 5 As shown, a toothed ring 1 215 is provided at the upper end of the sealing end cover plate 21, and a toothed ring 225 is provided at one end of the clamping ring. After the toothed ring 1 215 and the toothed ring 2 225 are engaged, the multiple arc blocks of the clamping ring are locked, thereby locking the sealing end cover plate 21 to the cylinder front flange 23. On the basis of locking, the toothed structure engagement is added to facilitate locking the sealing end cover plate, ensuring the pressure bearing capacity and sealing performance of the sealing end.

[0029] like Figure 5 As shown, the sealing end cover plate 21 is provided with two grooves 2 for placing the sealing ring, the bottom is provided with a groove 1 for placing the sealing ring, and an exhaust valve 211 that runs through the bottom of the sealing end cover plate 21. The sealing end cover plate 21 is provided with multiple grooves for placing the sealing ring, which ensures the sealing performance of the sealing end 1 when performing the matching seal, and the exhaust valve 211 that runs through the bottom of the sealing end cover plate 21 is conducive to the subsequent discharge of gas from the inner cavity of the composite material cylinder 5 when the inner cavity of the composite material cylinder 5 is filled with water.

[0030] like Figure 7As shown, the clamping device 2 includes a cylinder support platform and a cylinder support ring clamp provided on the cylinder support platform; the cylinder support ring clamp can be used to lock and fix the composite cylinder 5 on the cylinder support platform. This arrangement is for fixing and supporting the composite cylinder.

[0031] Specifically, Figure 8 As shown, the cylinder support platform includes a cylinder support platform 1 31 and a cylinder support platform 2 32; the cylinder support hoop clamp includes a cylinder support hoop clamp 1 33 and a cylinder support hoop clamp 2 34, the cylinder support platform 1 31 and the cylinder support hoop clamp 1 33 are connected by a lifting device 35, and the cylinder support hoop clamp 1 33 can move up and down in the vertical direction under the drive of the lifting device 35, and the cylinder support platform 2 32 and the cylinder support hoop clamp 2 34 are movably connected, so that the composite material cylinder 5 can be in a horizontal state or an inclined state.

[0032] By arranging a lifting device 35 between the cylinder support platform 1 31 and the cylinder support ring hoop clamp 1 33, the cylinder support platform 2 32 and the cylinder support ring hoop clamp 2 34 are movably connected, so that one end of the composite material cylinder 5 can be lifted up as the lifting device 35 rises, and the other end is lowered by the cylinder support platform 2 32 and the cylinder support ring hoop clamp 2 34 being movably connected, so that the composite material cylinder 5 is in an inclined state, and the inclination angle is generally between 15 and 25°, thereby improving the speed of water injection and drainage. At the same time, the cylinder support ring hoop clamp can lock and fix the composite material cylinder 5 on the cylinder support platform to prevent the composite material cylinder 5 from falling off when it is in a tilted state.

[0033] like Figure 6 and Fig. 9 As shown, the deformation test bench 4 includes a plurality of probes 42, a plurality of probe brackets 42 and a stand 43; one end of the probe bracket 42 is connected to the detection stand 43, and the other end is connected to the probe 41; the probe bracket 42 is a retractable structure; the probes 41 are distributed on the outer circumference of the composite material cylinder 5 and can contact the test points of the pre-set test positions on the outer circumference of the composite material cylinder 5. It is convenient to detect the deformation amount of the composite material cylinder 5 before and after the test.

[0034] When conducting a water pressure deformation test, the detection head 42 contacts the test point on the outer circumference of the composite material cylinder 5. When the composite material cylinder 5 is deformed, the detection head 42 can accurately detect the deformation and contraction of the composite material cylinder 5 through the retractable detection head bracket 42. The precise deformation amount of the composite material cylinder during the test can be obtained by collecting the change in the position of the detection head before and after the test through the camera device.

[0035] The present application also provides a method for testing the water pressure deformation of a composite material cylinder, specifically: S1, connecting the cylinder rear flange 12 of the water injection and pressurization end 1 and the cylinder front flange 23 of the sealing end 2 to the two ends of the composite cylinder 5; S2, placing the composite material cylinder 5 connected with the cylinder front flange 23 and the cylinder rear flange 12 on the tightening device 2 in the test site, installing the water injection pressurization end cover plate 11 on the cylinder rear flange 12, installing the sealing end cover plate 21 of the sealing end 2 on the cylinder front flange 23, and then clamping the composite material cylinder 5 onto the tightening device 2 by using the tightening device 2; S3, the water injection unit 6 injects water into the inner cavity of the composite material cylinder 5 through the water injection and pressurizing end 1 until the inner cavity is full of water; S4. After stopping water injection, close the exhaust valve 211, tighten the water injection plug of the water injection port 112, and then connect the output pressure port of the pressurizing unit 7 to the pressurizing port 111 of the water injection pressurizing end 1; S5 , moving the multiple deformation test benches 4 to the outer periphery of the composite material cylinder 5 , and adjusting the detection head 41 to make it contact with the test points on the outer periphery of the composite material cylinder 5 .

[0036] The specific steps of S3 are as follows: when water is injected into the inner cavity of the composite material cylinder 5 through the water injection port, the lifting device 35 is slowly lifted, and the cylinder support ring hoop clamp ring 1 33 can move up and down in the vertical direction under the drive of the lifting device 35, and the cylinder support platform 2 32 and the cylinder support ring hoop clamp ring 2 34 are movably connected, so that the composite material cylinder 5 locked on the tightening device 2 is in an inclined state, and then the exhaust valve 211 at the upper left corner of the sealing end cover plate 21 is opened, and the water injection plug is unscrewed. At this time, the pressure port 112 of the water injection pressurizing end 1 is blocked with a ball valve, and the water injection port 111 is connected to the water injection unit 6 for water injection. When a water column appears in the exhaust valve 211 at the upper left corner of the sealing end cover plate 21, the lifting device 35 of the tightening device 2 is slowly lowered, and the tightening device 35 drives the composite material cylinder 5 to return to a horizontal state, and then continue to inject water until the exhaust valve 211 of the sealing end cover plate 21 is full and then stop injecting water.

[0037] S5 is specifically as follows: each set of deformation test benches 4 needs to debug the detection head bracket 42 to contact the test point on the outer peripheral surface of the composite material cylinder in a natural state, so that the digital display laser rangefinder at the test point can accurately dock with the test point, and then turn on the pressurizing unit 7 to gradually pressurize the pressurizing port 112 of the water injection pressurizing end 1 to 4.0Mpa. After pressurizing to 4.0Mpa, stabilize the pressure for 10-60S, and use the camera device 8 to collect the deformation of the composite material cylinder 5 detected by the detection head in real time.

[0038] The above embodiments are only used to illustrate the present invention, rather than to limit the present invention. Technicians in the relevant technical field may make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also fall within the protection scope of the present invention, and the protection scope of the present invention should be defined by the claims.

Claims

1. A composite material cylinder water pressure deformation testing device, characterized in that: The water pressure deformation testing device comprises a water injection and pressurizing end that can be arranged at one end of the composite material cylinder, a sealing end that can be arranged at the other end of the composite material cylinder and a tightening device that can lock the composite material cylinder; multiple groups of deformation testing benches are arranged on the outer peripheral surface of the composite material cylinder.

2. The composite material cylinder water pressure deformation testing device according to claim 1, characterized in that: The water injection and pressurizing end includes a rear flange of the cylinder, a water injection and pressurizing end cover, a pressurizing port and a water injection port; one end of the rear flange of the cylinder is connected to one end of the composite material cylinder, and the pressurizing end cover is sealed at the other end of the rear flange of the cylinder, and the pressurizing port and the water injection port are arranged on the water injection and pressurizing end cover and are both connected to the inner cavity of the composite material cylinder.

3. The composite material cylinder water pressure deformation testing device according to claim 1, characterized in that: The sealing end includes a front flange of the cylinder, a sealing end cover plate and a clamping ring; one end of the front flange of the cylinder is connected to the other end of the composite material cylinder, and the sealing end cover plate is locked to the front flange of the cylinder by using the clamping ring, so that the sealing end cover plate blocks the port at the other end of the front flange of the cylinder.

4. The composite material cylinder water pressure deformation testing device according to claim 3, characterized in that: The clamping ring is a split structure, including a plurality of arc blocks, and locking pieces are arranged between the ends of adjacent arc blocks. The locking pieces can lock the plurality of arc blocks into a full circle ring, thereby forming a clamping ring.

5. The composite material cylinder water pressure deformation testing device according to claim 1, characterized in that: The tightening device comprises a cylinder support platform and a cylinder support hoop clamp arranged on the cylinder support platform; the cylinder support hoop clamp is used to lock and fix the composite material cylinder on the cylinder support platform.

6. The composite material cylinder water pressure deformation testing device according to claim 5, characterized in that: The cylinder support platform includes cylinder support platform 1 and cylinder support platform 2; the cylinder support hoop clamp includes cylinder support hoop clamp 1 and cylinder support hoop clamp 2, the cylinder support platform 1 and cylinder support hoop clamp 1 are connected by a lifting device, and the cylinder support hoop clamp can move up and down in the vertical direction under the drive of the lifting device, and the cylinder support platform 2 and cylinder support hoop clamp 2 are movably connected, so that the composite material cylinder can reach a horizontal state or an inclined state.

7. The composite material cylinder water pressure deformation testing device according to claim 1, characterized in that: Each group of the deformation test bench includes multiple detection heads, multiple detection head brackets and a test bench; one end of the detection head bracket is connected to the test bench, and the other end is connected to the detection head; the detection head bracket is a retractable structure; the detection heads are distributed on the outer circumference of the composite material cylinder and can contact the test points on the outer circumference of the composite material cylinder.

8. A composite material cylinder water pressure deformation testing method, using the composite material cylinder water pressure deformation testing device according to any one of claims 2 to 7, characterized in that: The test method is: S1. Connect the cylinder rear flange and the cylinder front flange to the two ends of the composite cylinder; S2. Place the composite cylinder connected with the cylinder front flange and the cylinder rear flange on the clamping device in the test site, install the water injection pressurization end cover plate on the cylinder rear flange, install the sealing end cover plate and the clamping ring on the cylinder front flange, and then clamp the composite cylinder to the clamping device using the clamping device; S3, the water injection unit injects water into the inner cavity of the composite material cylinder through the water injection port until the water is full; S4. After stopping water injection, close the exhaust valve, tighten the water injection plug of the water injection port, and then connect the pressure port of the pressurizing unit to the pressurizing port; S5. Move the multiple deformation test benches to the outer periphery of the composite material cylinder, adjust the detection head to make it contact with the test point on the outer periphery of the composite material cylinder; then start the pressurizing unit to test the pressure inside the composite material cylinder through the pressurizing port, and use the detection head and the camera device to detect the deformation amount.

9. The method for testing the hydraulic deformation of a composite material cylinder according to claim 8, characterized in that: S3 is specifically as follows: when water is injected into the inner cavity of the composite material cylinder through the water injection and pressurizing end, the lifting device is slowly lifted, and the cylinder support ring hoop clamp ring 1 can move up and down vertically under the drive of the lifting device, and the cylinder support platform 2 and the cylinder support ring hoop clamp 2 are movably connected, so that the composite material cylinder locked on the clamping device is in an inclined state, and then the exhaust valve is opened, and the water injection plug is unscrewed. At this time, the pressurizing port is blocked with a ball valve, and the water injection port is connected to the pressurizing unit for water injection. When a water column appears in the exhaust valve, the lifting device of the clamping device is slowly lowered, and the clamping device drives the composite material cylinder to return to a horizontal state, and water injection is continued until the exhaust valve is full and then the water injection is stopped.

10. The method for testing the water pressure deformation of a composite material cylinder according to claim 8, characterized in that: S5 is specifically as follows: Each set of deformation test benches needs to debug the detection head at one end of the detection head bracket to contact the test point on the outer peripheral surface of the composite material cylinder, so that the digital display laser rangefinder at the test point can accurately dock with the test point, and then turn on the pressurizing unit to gradually pressurize the pressurizing port at the pressurizing end to 4.0Mpa. After pressurizing to 4.0Mpa, stabilize the pressure for 10-60S, and use a camera to collect the deformation of the composite material cylinder detected by the detection head in real time.

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