Water pressure testing tool

Abstract

The utility model discloses a water pressure testing tool. The water pressure testing tool comprises a support, a blanking cap, a supporting sleeve and an elastic tie bar. The bracket is at least used for supporting a cylinder to be tested; the blanking caps comprise a first blanking cap and a second blanking cap, and the first blanking cap and the second blanking cap are at least used for plugging cylinder openings in the two ends of the cylinder; the supporting sleeves are arranged on the first blanking cap and the second blanking cap; the supporting sleeves are at least used for sealing the end part of the cylinder; and the elastic tie bar is arranged between the first blanking cap and the second blanking cap. The water pressure testing tool at least can solve the problems that when an existing water pressure testing tool and a composite material cylinder are installed and matched, holes need to be punched in the cylinder, and when the existing water pressure testing tool and the composite material cylinder are used cooperatively, sealing performance is insufficient.

Description

Technical Field

[0001] The utility model relates to the field of hydraulic tooling, and in particular, to a hydraulic pressure testing tooling. Background Technique

[0002] The hydraulic pressure testing tooling used for the hydraulic pressure test of a composite material cylinder is a testing device specifically used to simulate the internal pressure borne by the composite material cylinder in the actual working environment. With the wide application of composite materials in the fields of aerospace, automobile manufacturing, and various non-standard automation, the demand for the testing and analysis of the compressive performance of products is increasing day by day. The hydraulic pressure performance test is an important means to evaluate the bearing capacity and stability of composite materials under the hydraulic pressure environment. The large straight cylindrical hydraulic pressure testing tooling is widely used in the composite material rotary body structure with a large length-diameter ratio, and is currently mainly used in the field of hydraulic pressure detection of composite metal pipes and composite material pipe fittings.

[0003] However, since the thickness of the composite material cylinder is relatively thin, it is impossible to punch holes in the radial direction of the cylinder. Even if the punching is completed, under the premise of the thin wall, the hole cannot be assembled and used under high pressure. The traditional hydraulic pressure testing tooling directly connects the front and rear cover plates to the front and rear ends of the cylinder through bolts. However, since the composite material straight cylinder itself does not have a metal joint, the plug of the hydraulic pressure tooling cannot be sealed normally in the assembled state. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a hydraulic pressure testing tooling, which can at least solve the problems that the existing hydraulic pressure testing tooling needs to punch holes in the cylinder and has insufficient sealing performance when being installed and matched with the composite material cylinder.

[0005] According to one aspect of the utility model, a hydraulic pressure testing tooling is provided, including:

[0006] A bracket, which is at least used to support the cylinder to be tested;

[0007] A plug, which includes a first plug and a second plug, and the first plug and the second plug are at least used to block the barrel openings at both ends of the cylinder;

[0008] A support sleeve, which is provided on both the first plug and the second plug, and the support sleeve is at least used to cover the end of the cylinder;

[0009] An elastic tension bar, which is arranged between the first plug and the second plug.

[0010] Further, the bracket includes a support portion and a base, the support portion is disposed on the base, and an arc-shaped groove is provided on the support portion, and the arc-shaped groove is at least used to support the cylinder.

[0011] Further, at least one of the first plug cover and the second plug cover is provided with a water injection hole for injecting water into the cylinder, and a water injection joint is provided at the water injection hole.

[0012] Further, at least one of the first plug cover and the second plug cover is provided with an exhaust hole for exhausting air from the cylinder, and a valve is provided at the exhaust hole.

[0013] Further, the exhaust hole is close to one end of the support sleeve and is located at the highest position inside the support sleeve.

[0014] Further, both the first plug cover and the second plug cover include a plurality of first threaded holes, the plurality of first threaded holes are arranged at intervals along a first circumferential direction, and second threaded holes corresponding to the first threaded holes are provided on the support sleeve, and the support sleeve is connected to the first plug cover and the second plug cover by first bolts passing through the first threaded holes and the second threaded holes.

[0015] Further, a plurality of connection holes are provided on both the first plug cover and the second plug cover, the plurality of connection holes are arranged at intervals along a second circumferential direction, and the second circumference is arranged outside the first circumference, the elastic tension strips are multiple, one end of the elastic tension strip is connected to the first plug cover through the connection hole, and the other end of the elastic tension strip is connected to the second plug cover through the connection hole.

[0016] Further, the hydrostatic test tooling further includes a first sealing element, and annular grooves are provided on one side of the first plug cover and the second plug cover for installing the inner support sleeve;

[0017] Wherein, the first sealing element is disposed in the annular groove, and the support sleeve is used for enclosing the outside of the end of the cylinder.

[0018] Further, an inner flange is provided at one end of the support sleeve connected to the first plug cover and the second plug cover, and at least one of the second threaded hole and the annular groove is provided on the inner flange.

[0019] On the other hand, the hydrostatic test tooling further includes a second sealing element;

[0020] Wherein, the support sleeve is used for enclosing the inside of the end of the cylinder, and the second sealing element is provided between the cylinder and the first plug cover and the second plug cover.

[0021] In the present utility model, support sleeves are respectively installed and fixed on the first plug cover and the second plug cover, and the two support sleeves are respectively sleeved on both ends of the cylinder to play a positioning role between the cylinder and the plug cover. The combination of the plug cover, the support sleeve and the cylinder is placed on the bracket, and then the first plug cover and the second plug cover are connected by an elastic tension strip. By tightening the elastic tension strip, the first plug cover and the second plug cover seal both ends of the cylinder. Thus, the water pressure test tooling of the present application is formed. Finally, water is injected into the cylinder for water pressure testing, and the bracket can prevent the cylinder from rolling randomly to avoid affecting the smooth progress of the experiment. In addition, a first sealing element is provided between the support sleeve and the plug cover, or a second sealing element is provided between the cylinder and the plug cover. Both the first sealing element and the second sealing element can seal the water pressure test tooling to improve the sealing performance of the water pressure test tooling of the present application.

[0022] That is to say, compared with the existing water pressure test tooling, when using the water pressure test tooling of the present application to perform a water pressure test on the cylinder, it is possible to avoid drilling holes in the cylinder to install the water pressure test tooling. At the same time, due to the provision of the first sealing element or the second sealing element, it is possible to effectively prevent the problem that the water in the cylinder flows out to the external space of the cylinder during the water pressure test of the cylinder, resulting in inaccurate test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present utility model and constitute a part of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:

[0024] Figure 1 is a structural diagram of the water pressure test tooling disclosed in the embodiment of the present utility model;

[0025] Figure 2 is a structural diagram of the first perspective view of the support sleeve of the water pressure test tooling disclosed in the embodiment of the present utility model blocking the outside of the end of the cylinder;

[0026] Figure 3 is Figure 2 an enlarged view of part A in

[0027] Figure 4 is a structural diagram of the first perspective view of the support sleeve of the water pressure test tooling disclosed in the embodiment of the present utility model blocking the inside of the end of the cylinder;

[0028] Figure 5 is Figure 4 an enlarged view of part B in

[0029] Among them, the above-mentioned drawings include the following reference numerals:

[0030] 10. Bracket; 11. Support part; 111. Arc-shaped groove; 12. Base; 20. Plug cover; 21. First plug cover; 211. Water injection hole; 212. Water injection joint; 213. Exhaust hole; 214. Connection hole; 215. Annular groove; 22. Second plug cover; 30. Support sleeve; 31. Inner flange; 40. Elastic tension rib; 50. First sealing element; 60. Second sealing element; 70. Cylinder. Detailed implementation manners

[0031] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0032] It should be noted that the terms used herein are only for describing the specific implementation manners and are not intended to limit the exemplary embodiments of the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0033] Unless otherwise specifically stated, the relative arrangements of the components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0034] See Figures 1 to 3 As shown, according to the first embodiment of the present invention, a water pressure test tooling is provided, and the water pressure test tooling includes a bracket 10, a plug cover 20, a support sleeve 30, and an elastic tension rib 40.

[0035] Among them, the bracket 10 is at least used to support the cylinder 70 to be tested. The plug covers 20 include a first plug cover 21 and a second plug cover 22, and the first plug cover 21 and the second plug cover 22 are at least used to block the openings at both ends of the cylinder 70. Support sleeves 30 are arranged on both the first plug cover 21 and the second plug cover 22, and the support sleeves 30 are at least used to enclose the ends of the cylinder 70. The elastic tension bars 40 are arranged between the first plug cover 21 and the second plug cover 22.

[0036] In the present utility model, support sleeves 30 are respectively installed and fixed on the first plug cover 21 and the second plug cover 22, and the two support sleeves 30 are respectively sleeved on both ends of the cylinder 70 to play a positioning role between the cylinder 70 and the plug cover 20. The combined body composed of the plug cover 20, the support sleeve 30 and the cylinder 70 is placed on the bracket 10, and then the first plug cover 21 and the second plug cover 22 are connected by the elastic tension bars 40. By tightening the elastic tension bars 40, the first plug cover 21 and the second plug cover 22 block both ends of the cylinder 70. Thus, the water pressure test tooling of the present application is formed. Finally, water is injected into the cylinder 70 for water pressure testing, and the bracket 10 can prevent the cylinder 70 from rolling randomly to avoid affecting the smooth progress of the experiment. In addition, a first sealing element 50 is arranged between the support sleeve 30 and the plug cover 20, or a second sealing element 60 is arranged between the cylinder 70 and the plug cover 20. Both the first sealing element 50 and the second sealing element 60 can seal the water pressure test tooling to improve the sealing performance of the water pressure test tooling of the present application.

[0037] That is to say, compared with the existing water pressure test tooling, when using the water pressure test tooling of the present application to conduct a water pressure test on the cylinder 70, it is possible to avoid drilling holes in the cylinder 70 to install the water pressure test tooling. At the same time, due to the arrangement of the first sealing element 50 or the second sealing element 60, it can effectively prevent the problem that the water in the cylinder 70 flows out to the external space of the cylinder 70 during the water pressure test of the cylinder 70, resulting in inaccurate test data.

[0038] Further, as shown in Figure 1 shown, the bracket 10 includes a support portion 11 and a base 12. The support portion 11 is arranged on the base 12, and an arc-shaped groove 111 is arranged on the support portion 11. The arc-shaped groove 111 is at least used to support the cylinder 70.

[0039] Specifically, the support portion 11 and the base 12 can be integrally formed or separately formed. When the support portion 11 and the base 12 are integrally formed, processing methods such as casting, turning, and stamping can be used. When the support portion 11 and the base 12 are integrally formed, the support portion 11 and the base 12 can be respectively formed by processing methods such as casting, turning, and stamping and then combined together. At this time, the support portion 11 and the base 12 can be connected and fixed together by connection methods such as welding, bolt connection, and snap connection. The first embodiment shows the case where the support portion 11 and the base 12 are separately formed and then connected and fixed together by welding. The forming methods of the remaining support portion 11 and base 12 and the connection methods between the support portion 11 and the base 12 are all within the scope claimed in this application. The support portion 11 can be set as an arc-shaped groove 111 or can be set as a regular or irregular structure such as a square groove (not shown in the figure). The structure of the support portion 11 can be reasonably deformed according to the rest of the hydrostatic test tooling and the shape of the cylinder to be tested so that the support portion 11 can better fit the rest of the hydrostatic test tooling. The first embodiment shows the case where the support portion 11 is composed of the arc-shaped groove 111. The arc-shaped groove 111 is provided to better fit the cylinder 70 to be tested and the rest of the hydrostatic test tooling. Moreover, the bracket 10 can be one, two, three, or more than three, as long as it can ensure that the rest of the hydrostatic test tooling can remain stable and the force is balanced after being installed on the bracket. This application shows the case where the bracket 10 is three. The solutions for reasonably adjusting the number of the remaining brackets 10 are all within the scope claimed in this application. It should be noted that: the cylinder 70 to be tested in this application is generally made of composite materials such as glass fiber plus epoxy resin and carbon fiber plus epoxy resin.

[0040] Further, referring to Figure 1 and Figure 3 as shown, at least one of the first plug 21 and the second plug 22 is provided with a water injection hole 211 for injecting water into the cylinder 70, and a water injection joint 212 is provided at the water injection hole 211.

[0041] Specifically, the water injection hole 211 can be separately provided on the first plug cover 21, and a water injection joint 212 can be installed at the water injection hole 211. In this application, the water injection joint 212 serves two main purposes: First, when conducting a water pressure test using the water pressure test tooling of this application in subsequent use, it is necessary to inject water into the cylinder 70 to be tested for subsequent water pressure testing. Installing the water injection joint 212 facilitates connecting a water injection pipeline (not shown in the figure) at the water injection hole 211 for water injection. Second, since the water pressure test tooling of this application is a test device for simulating the internal pressure borne by the cylinder 70 to be tested in the actual working environment, a large amount of water needs to be injected into the cylinder 70 for pressurization. If the water injection joint 212 is not installed at the water injection hole 211, the increase in the internal water pressure of the cylinder 70 can easily expand the water injection pipeline at the water injection hole 211, resulting in the interruption of water injection. Installing the water injection joint 212 at the water injection hole 211 facilitates the installation and fixation of the water injection pipeline at the water injection hole 211, ensuring that the water injection pipeline will not be dislodged by the water pressure during subsequent testing. Moreover, the water injection hole 211 can be separately opened on the second plug cover 22 and the water injection joint 212 can be installed, or the water injection hole 211 can be opened and the water injection joint 212 can be installed on both the first plug cover 21 and the second plug cover 22. At the same time, opening the water injection hole 211 and installing the water injection joint 212 on both the first plug cover 21 and the second plug cover 22 has a significant advantage over separately opening the water injection hole 211 and installing the water injection joint 212 on only the first plug cover 21 or the second plug cover 22, that is, it can accelerate the water injection speed to save the testing time. This embodiment shows the situation where the water injection hole 211 is opened and the water injection joint 212 is installed on both the first plug cover 21 and the second plug cover 22. It should be added that the first plug cover 21 and the second plug cover 22 can be processed from materials such as stainless steel and cast iron that can withstand relatively large pressures.

[0042] Further, referring to Figure 1 and Figure 3As shown, at least one of the first plugging cover 21 and the second plugging cover 22 is provided with an exhaust hole 213 for exhausting the cylinder 70. The main function of the exhaust hole 213 is to facilitate the injection of water into the cylinder 70 from the water injection hole 211. As the water level rises, the air inside the cylinder 70 is compressed, which will make it increasingly difficult or even impossible to continue injecting water into the cylinder 70 for pressurization. Therefore, the exhaust hole 213 for exhausting the cylinder 70 is provided on at least one of the first plugging cover 21 and the second plugging cover 22. The hydraulic test tool of the present application can have an exhaust hole 213 on the first plugging cover 21 or the second plugging cover 22 alone, or can have an exhaust hole 213 on both the first plugging cover 21 and the second plugging cover 22. Compared with separately opening the exhaust hole 213 on the first cover 21 or the second cover 22, simultaneously opening the exhaust hole 213 on the first cover 21 or the second cover 22 has a significant advantage, that is, the time for filling the cylinder 70 with water can be shortened. However, compared with separately opening the exhaust hole 213 on the first cover 21 or the second cover 22, the sealing requirements for the water pressure test tooling will also be higher.

[0043] Further, see Figure 1 and Figure 3 As shown, a valve (not shown) is provided at the exhaust hole 213. The main function of providing the valve at the exhaust hole 213 is that as water is continuously injected into the cylinder 70, the air in the cylinder 70 will eventually be completely discharged from the exhaust hole 213 to the external space of the cylinder 70. If the valve is not installed at the exhaust hole 213, the water can flow out from the exhaust hole 213 to the external space of the cylinder 70 after the water level in the cylinder 70 reaches a certain height. After the valve is provided at the exhaust hole 213, the valve can be opened to discharge the air inside the cylinder 70 when water is injected into the cylinder 70. When the air in the cylinder 70 is completely discharged, the valve can be closed. At this time, the cylinder 70 can be filled with water. As water is continuously injected into the cylinder 70, the water pressure in the cylinder 70 can gradually increase to meet the subsequent water pressure test requirements.

[0044] Further, see Figure 1 and Figure 3 As shown, the exhaust hole 213 is arranged near one end of the support sleeve 30 and is located at the highest point inside the support sleeve 30. The effect of such arrangement is that when the exhaust hole 213 is located at the highest point inside the support sleeve 30, as the water level in the cylinder 70 continues to rise, the water level will gradually submerge the exhaust hole 213 only after reaching the highest point inside the support sleeve 30. In this way, the air inside the cylinder 70 can be exhausted as much as possible, so as to ensure that the data of the subsequent water pressure test using the water pressure test tool of the present application is more accurate.

[0045] Further, see Figure 1As shown, the first plug cover 21 and the second plug cover 22 both include a plurality of first threaded holes (not shown in the figure). The plurality of first threaded holes are arranged at intervals along the first circumferential direction. The support sleeve 30 is provided with second threaded holes (not shown in the figure) corresponding to the first threaded holes. The support sleeve 30 is connected to the first plug cover 21 and the second plug cover 22 by first bolts (not shown in the figure) passing through the first threaded holes and the second threaded holes.

[0046] Specifically, after a plurality of spaced-apart first threaded holes are formed in the first plug cover 21 and the second plug cover 22 along the first circumferential direction, the support sleeve 30 with corresponding first threaded holes is respectively installed on the first plug cover 21 and the second plug cover 22. Then, the first bolts are passed from the first threaded holes into the second threaded holes and tightened to ensure that the support sleeve 30 is respectively installed and fixed on the first plug cover 21 and the second plug cover 22. The diameters of the first plug cover 21 and the second plug cover 22 can be 800 mm to 1200 mm, or can be sizes outside this range of 800 mm to 1200 mm. Specifically, it can be reasonably adjusted according to the size of the cylinder 70 to be tested. The maximum radius of the support sleeve 30 can be 30 mm smaller than the radii of the first plug cover 21 and the second plug cover 22. Such a design reserves at least an installation position for the elastic tension bars 40 to be installed subsequently.

[0047] Further, referring to Figure 1 and Figure 3 As shown, a plurality of connection holes 214 are provided on both the first plug cover 21 and the second plug cover 22. The plurality of connection holes 214 are arranged at intervals along the second circumferential direction, and the second circumference is arranged outside the first circumference. There are a plurality of elastic tension bars 40. One end of the elastic tension bar 40 is connected to the first plug cover 21 through the connection hole 214, and the other end of the elastic tension bar 40 is connected to the second plug cover 22 through the connection hole 214.

[0048] Specifically, the connection hole 214 can be a threaded hole or a through hole without threads. When the connection hole 214 is a threaded hole, both ends of the elastic tension strip 40 connected to the first plug 21 and the second plug 22 are fixed by a second bolt (not shown in the figure), and it is ensured that the pre-tightening force of the second bolt is not less than 7000 N. This is to prevent the second bolt from loosening during subsequent tests and affecting the sealing performance between the plug 20 and the cylinder 70. The second bolt can be a hexagonal bolt or a square head bolt, etc. The specific type is reasonably selected according to the remaining structure of the hydrostatic test tooling and the size of the cylinder 70. When the connection hole 214 is a through hole, both ends of the elastic tension strip 40 connected to the first plug 21 and the second plug 22 are passed through the through hole for tensioning and fixing. Under the action of the elastic tension strip 40, the first plug 21 and the second plug 22 can respectively seal the two ends of the cylinder 70 to ensure the smooth progress of subsequent tests. There are multiple elastic tension strips 40, and it is preferably an even number as much as possible. In this embodiment, the case where the elastic tension strip 40 is 32 is shown. Reasonable increase or decrease of the number of elastic tension strips 40 due to different sizes of the cylinder 70 to be tested is within the scope protected by this application.

[0049] Further, referring to Figure 2 and Figure 3 shown, the hydrostatic test tooling further includes a first sealing element 50. An annular groove 215 is provided on one side of the first plug 21 and the second plug 22 for installing the support sleeve 30. Among them, the first sealing element 50 is disposed in the annular groove 215, and the support sleeve 30 is used to enclose the outside of the end of the cylinder 70. The annular groove 215 is provided at the connection between the first plug 21 and the second plug 22 and the support sleeve 30, and the first sealing element 50 is installed in the annular groove 215. This is to further seal the connection between the first plug 21 and the second plug 22 and the support sleeve 30 to prevent water from flowing out of this connection and causing inaccurate experimental test data. At the same time, the support sleeve 30 enclosing the outside of the end of the cylinder 70 can play a role in positioning the cylinder 70. Under the combined action of the elastic tension strip 40, the cylinder 70, and the first bolt, the first sealing element 50 will be compressed to better seal the connection.

[0050] Further, referring to Figure 3As shown in the figure, an inner flange 31 is provided at one end of the support sleeve 30 connected to the first end cap 21 and the second end cap 22, and at least one of the second threaded hole and the annular groove 215 is provided on the inner flange 31. Although the side wall surface of the support sleeve 30 that fits against the side wall of the cylinder 70 has a certain thickness, if the second threaded hole and the annular groove 215 are both provided on the wall thickness surface at the end where the side wall surface contacts the end cap 20, it will cause an increase in the size of the support sleeve 30, and further increase the size of the entire hydrostatic test tooling, bringing inconvenience to the test. The setting of the inner flange 31 provides an installation position for at least one of the second threaded hole and the annular groove 215, so that the size of the hydrostatic test tooling of the present application will not be too large. Moreover, the setting of the inner flange 31 can also press both ends of the cylinder 70 against the inner flange 31, thereby making the sealing performance of the hydrostatic test tooling better. The support sleeve 30 can be made of a composite material of fiberglass and epoxy resin or carbon fiber and epoxy resin, or can be made of a metal material with good performance. At the same time, the inner wall surface of the support sleeve 30 and the outer wall surface of the cylinder 70 are installed in an interference fit manner, and such an installation method is to ensure the sealing performance after the hydrostatic test tooling is fitted with the cylinder 70 and ensure that water will not flow out to the external space of the cylinder 70.

[0051] On the other hand, as shown in Figure 4 and Figure 5 In the second embodiment of the present application, the hydrostatic test tooling further includes a second sealing element 60. Among them, the support sleeve 30 is used to enclose the inner side of the end of the cylinder 70, and a second sealing element 60 is provided between the cylinder 70 and the first end cap 21 and the second end cap 22.

[0052] Specifically, the second embodiment includes most of the technical features of the first embodiment. The difference from the first embodiment is that in the second embodiment, a second sealing element 60 is provided between both ends of the cylinder 70 and the first end cap 21 and the second end cap 22, and the support sleeve 30 encloses the inner side of the end of the cylinder 70. Among them, the function of the second sealing element 60 is the same as that of the first sealing element 50, both of which are to seal the hydrostatic test tooling, thereby improving the sealing performance of the hydrostatic test tooling, and further making the data measured by using the hydrostatic test tooling of the present application more accurate. At the same time, the support sleeve 30 enclosing the inner side of the end of the cylinder 70 also positions the cylinder 70 on the end cap 20 to prevent the end of the cylinder 70 from moving on the end cap 20, thereby increasing the stability of the hydrostatic test tooling of the present application. It should be noted that in other embodiments of the present application, the first sealing element 50 and the second sealing element 60 can be provided at the same time. And in order to improve the sealing performance of the hydrostatic test tooling of the present application, a sealing element can be appropriately added between the support sleeve 30 and the end cap 20 to make the measured data more accurate.

[0053] As can be seen from the above description, in this application, a hydrostatic test tooling composed of a bracket 10, a first plug cover 21, a second plug cover 22, a support sleeve 30, and an elastic tension strip 40 can be used to perform a hydrostatic test on a cylinder 70 made of a composite material. The hydrostatic test tooling is used in cooperation with the first plug cover 21, the second plug cover 22, multiple elastic tension strips 40, and multiple brackets 10. When the first plug cover 21 and the second plug cover 22 are assembled with the cylinder 70 to be tested, annular grooves 215 are first milled on the surfaces of the first plug cover 21 and the second plug cover 22 that are respectively in contact with the two ends of the cylinder 70, and a first sealing element 50 is installed at the annular grooves 215 for sealing treatment. Since the roughness of the first plug cover 21 and the second plug cover 22 of the hydrostatic test tooling cannot meet the sealing requirements after machining, support sleeves 30 need to be installed on the surfaces of the first plug cover 21 and the second plug cover 22 that are in contact with the two ends of the cylinder 70, so as to ensure that the radial expansion and axial shrinkage deformation of the cylinder 70 under the specified hydrostatic pressure are less than the pre-compression deformation of the first sealing element 50. And the contact surface between the first sealing element 50 and the support sleeve 30 has a roughness of not less than 3.2, so as to ensure the sealing performance between the hydrostatic test tooling and the cylinder 70 during assembly. After the hydrostatic test tooling is assembled with the cylinder 70, water is continuously injected into the cylinder 70 to make the cylinder 70 expand. Although the cylinder 70 will expand radially and shrink axially, due to the elasticity of the elastic tension strips 40, they will contract correspondingly in the axial direction, so that the sealing performance between the hydrostatic test tooling and the cylinder 70 is better. Finally, strain gauges (not shown in the figure) are installed on the side wall surface of the cylinder 70 and displacement test instruments are installed on the plug cover 20 to collect data. Finally, through analysis, it can be known whether the cylinder 70 made of a composite material meets the requirements. In addition, a second sealing element 60 can be provided between the cylinder 70 and the plug cover 20 to seal between the cylinder 70 and the plug cover 20. At the same time, the support sleeve 30 is sleeved on the inner side of the end of the cylinder 70 to position the cylinder 70 on the plug cover 20, preventing the end of the cylinder 70 from moving on the plug cover 20, thereby increasing the stability of the hydrostatic test tooling of this application.

[0054] It can be seen that through reasonable structural design, the hydrostatic test tooling of this application avoids the situation that it is impossible to drill holes in the cylinder 70 to install the plug cover 20 due to the thin thickness of the composite material cylinder 70. And it can solve the problem of insufficient sealing performance when the existing hydrostatic test tooling is installed and used in cooperation with the composite material cylinder 70.

[0055] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both orientations of "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations for the spatial relative descriptions used herein will be made accordingly.

[0056] In addition, it should be noted that the use of terms such as "first", "second" etc. to define components is only for the convenience of differentiating the corresponding components. Without further statement, the above terms have no special meaning, and thus should not be construed as limiting the protection scope of the present utility model.

[0057] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A hydrostatic test tooling, characterized in that, Comprising: A bracket (10), the bracket (10) is at least used to support a cylinder (70) to be tested; A plug cover (20), the plug cover (20) includes a first plug cover (21) and a second plug cover (22), the first plug cover (21) and the second plug cover (22) are at least used to block the openings at both ends of the cylinder (70); A support sleeve (30), the support sleeve (30) is provided on both the first plug cover (21) and the second plug cover (22), the support sleeve (30) is at least used to enclose the end of the cylinder (70); An elastic tension strip (40), the elastic tension strip (40) is arranged between the first plug cover (21) and the second plug cover (22).

2. The hydrostatic test tooling according to claim 1, wherein The bracket (10) includes a support part (11) and a base (12), the support part (11) is arranged on the base (12), an arc-shaped groove (111) is provided on the support part (11), and the arc-shaped groove (111) is at least used to support the cylinder (70).

3. The hydrostatic test tooling according to claim 1, wherein At least one of the first plug cover (21) and the second plug cover (22) is provided with a water injection hole (211) for injecting water into the cylinder (70), and a water injection joint (212) is provided at the water injection hole (211).

4. The hydrostatic test tooling according to any one of claims 1 to 3, characterized in that, At least one of the first plug cover (21) and the second plug cover (22) is provided with an exhaust hole (213) for exhausting air from the cylinder (70), and a valve is provided at the exhaust hole (213).

5. The hydrostatic test tooling according to claim 4, characterized in that, The exhaust hole (213) is close to one end of the support sleeve (30) and is located at the highest position inside the support sleeve (30).

6. The hydrostatic test tooling according to claim 3, characterized in that, Both the first plug cover (21) and the second plug cover (22) include a plurality of first threaded holes, the plurality of first threaded holes are arranged at intervals along a first circumferential direction, the support sleeve (30) is provided with second threaded holes corresponding to the first threaded holes, and the support sleeve (30) is connected to the first plug cover (21) and the second plug cover (22) by first bolts passing through the first threaded holes and the second threaded holes.

7. The hydrostatic test tooling according to claim 6, wherein A plurality of connection holes (214) are provided on both the first plug cover (21) and the second plug cover (22), the plurality of connection holes (214) are arranged at intervals along a second circumferential direction, and the second circumference is arranged outside the first circumference, the elastic tension strips (40) are multiple, one end of the elastic tension strip (40) is connected to the first plug cover (21) through the connection hole (214), and the other end of the elastic tension strip (40) is connected to the second plug cover (22) through the connection hole (214).

8. The hydrostatic test tooling according to claim 6, characterized in that, The water pressure test tooling further includes a first sealing element (50), and annular grooves (215) are provided on one side of the first plug cover (21) and the second plug cover (22) for installing the support sleeve (30); Wherein, the first sealing element (50) is arranged in the annular groove (215), and the support sleeve (30) is used to enclose the outside of the end of the cylinder (70).

9. The hydrostatic test tooling according to claim 8, wherein, One end of the support sleeve (30) connected to the first end cap (21) and the second end cap (22) is provided with an inner flange (31), and at least one of the second threaded hole and the annular groove (215) is provided on the inner flange (31).

10. The hydrostatic test tooling according to any one of claims 1 to 7, characterized in that, The hydrostatic test tooling further includes a second sealing element (60); Wherein, the support sleeve (30) is used to enclose the inner side of the end of the cylinder (70), and the second sealing element (60) is provided between the cylinder (70) and the first end cap (21) and the second end cap (22).

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