Underwater pressure experiment device

Abstract

The utility model relates to the technical field of underwater pressure experiments, in particular to an underwater pressure experiment device, which comprises a telescopic cylinder, the telescopic cylinder consists of a cylinder shell, a rear cover and a telescopic rod, and the cylinder shell and the rear cover are mounted and sealed through a mounting and dismounting structure; the sealing structure is mounted in the air cylinder shell; compared with the prior art, by arranging the mounting and dismounting structure, the sealing effect of the whole telescopic air cylinder in the static process can be improved while mounting and dismounting between the air cylinder shell and the rear cover are facilitated, and by arranging the sealing structure, the sealing effect of the telescopic air cylinder in the dynamic telescopic process can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of underwater pressure experiments, in particular to an underwater pressure experiment device. Background Art

[0002] Hydrostatic testing refers to a testing method that injects liquid (usually water) into the tested object by applying a specific pressure to evaluate its sealing performance and pressure-bearing capacity. Through hydrostatic testing, it can be determined whether there are leaks in pipelines, containers or equipment, and whether they can withstand the design pressure.

[0003] For existing underwater pressure testing devices, sealing is a crucial link. For existing cylinders, maintaining sealing during the expansion and contraction process can improve the accuracy of the underwater pressure test. Therefore, further improvements are needed on this basis. Utility Model Content

[0004] The purpose of the present utility model is to provide an underwater pressure test device to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] An underwater pressure test device, comprising:

[0007] Telescopic cylinder, which consists of a cylinder housing, a rear cover and a telescopic rod. The cylinder housing and the rear cover are installed and sealed by an installation and removal structure, which is used to achieve sealed installation and removal between the cylinder housing and the rear cover;

[0008] The sealing structure is installed inside the cylinder housing and is used to improve the sealing effect of the telescopic cylinder during the telescopic adjustment process.

[0009] As a further solution of the present invention: the installation and disassembly structure includes:

[0010] The sleeve plate is slidably mounted on one end of the cylinder housing located at the rear cover. An elastic member is provided in the enclosed space formed by the cylinder housing and the sleeve plate. The two ends of the elastic member are fixedly connected to the cylinder housing and the sleeve plate respectively. A mounting groove is provided in the middle of the cylinder housing, and a card ball is provided in the middle of the mounting groove.

[0011] The card slot is arranged on the outer side of the rear cover and is adapted to fit between the card balls. The outer side of the rear cover is provided with an annular groove, and a sealing ring is provided in the middle of the annular groove.

[0012] As another solution of the present invention: a limiting block is provided on the outer side of the cylinder housing, and the limiting block is adapted to the sleeve plate.

[0013] As another solution of the utility model: the sealing structure includes:

[0014] A piston, the piston being fixedly connected to one end of the telescopic rod located inside the cylinder housing, a sealing ring being provided on the outer side of the piston, and the piston being in sliding engagement with the inner wall of the cylinder housing;

[0015] The second sealing ring is fixedly mounted on one end of the cylinder housing away from the rear cover, and the second sealing ring is slidably fitted with the telescopic rod.

[0016] As another solution of the present invention: a pair of annular grooves are provided and are symmetrically arranged with respect to the clamping slot.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] Compared with the existing technology, by setting up the installation and disassembly structure, it can facilitate the installation and disassembly between the cylinder housing and the rear cover, and can also improve the sealing effect of the entire telescopic cylinder during the static process. By setting up the sealing structure, the sealing effect of the telescopic cylinder during the dynamic telescopic process can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the underwater pressure test device of the present utility model.

[0020] Figure 2 This is a schematic diagram of the internal structure of the telescopic cylinder in the underwater pressure test device of the utility model.

[0021] Figure 3 This is a structural diagram of the elastic parts in the underwater pressure test device of the present utility model.

[0022] In the figure: 1-telescopic cylinder, 101-cylinder housing, 102-back cover, 103-telescopic rod, 2-annular groove, 3-sealing ring, 4-sleeve plate, 5-limiting block, 6-mounting groove, 7-card ball, 8-elastic member, 9-piston, 10-sealing ring 1, 11-sealing ring 2, 12-card groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-Figure 3This embodiment provides an underwater pressure test device, which includes:

[0025] The telescopic cylinder 1 is composed of a cylinder housing 101, a rear cover 102, and a telescopic rod 103. The cylinder housing 101 and the rear cover 102 are installed and sealed by an installation and removal structure, which is used to achieve sealed installation and removal between the cylinder housing 101 and the rear cover 102;

[0026] A sealing structure installed inside the cylinder housing 101 to improve the sealing effect of the telescopic cylinder 1 during telescopic adjustment;

[0027] Compared with the existing technology, by setting up the installation and disassembly structure, it can facilitate the installation and disassembly between the cylinder housing 101 and the back cover 102, and can also improve the sealing effect of the entire telescopic cylinder 1 during the static process. By setting up the sealing structure, the sealing effect of the telescopic cylinder 1 during the dynamic telescopic process can be effectively improved.

[0028] See also Figure 1-Figure 3 In one embodiment, the installation and disassembly structure includes:

[0029] The sleeve plate 4 is slidably mounted on one end of the cylinder housing 101 located at the rear cover 102. An elastic member 8 is provided in the enclosed space formed by the cylinder housing 101 and the sleeve plate 4. The two ends of the elastic member 8 are respectively fixedly connected to the cylinder housing 101 and the sleeve plate 4. A mounting groove 6 is provided in the middle of the cylinder housing 101, and a locking ball 7 is provided in the middle of the mounting groove 6.

[0030] The card slot 12 is provided on the outer side of the rear cover 102 and is adapted to fit between the card ball 7. The outer side of the rear cover 102 is provided with an annular groove 2, and a sealing ring 3 is provided in the middle of the annular groove 2;

[0031] See also Figure 2 In one embodiment, a limit block 5 is provided on the outer side of the cylinder housing 101, and the limit block 5 is adapted to the sleeve plate 4;

[0032] In order to improve the sealing effect of the cylinder housing 101, the sealing ring 3 is put on the annular groove 2 of the rear cover 102, and the rear cover 102 is connected to one end of the cylinder housing 101. At the same time, the sleeve plate 4 is pushed to slide along one end of the cylinder housing 101. At this time, the elastic member 8 shrinks and deforms, and as the push plate slides, the card ball 7 bounces from the mounting groove 6 into the cavity inside the sleeve plate 4, and then the rear cover 102 is completely pushed into one end of the cylinder housing 101 and fits with the cylinder housing 101. After completing the fitting installation of the rear cover 102 and the cylinder housing 101, the push plate is released. The push plate can be reset by the action of the elastic member 8. During the reset process of the push plate, the push plate squeezes the ball to move radially along the cylinder housing 101, and finally a snap fit is formed between the ball and the card groove 12.

[0033] See also Figure 2 In one embodiment, the sealing structure comprises:

[0034] The piston 9 is fixedly connected to one end of the telescopic rod 103 located inside the cylinder housing 101. A sealing ring 10 is provided on the outside of the piston 9. The piston 9 slides with the inner wall of the cylinder housing 101.

[0035] The second sealing ring 11 is fixedly mounted on the end of the cylinder housing 101 away from the rear cover 102, and is in sliding engagement with the telescopic rod 103;

[0036] See also Figure 2 In one embodiment, the annular groove 2 is provided in a pair and is symmetrically arranged with respect to the card slot 12;

[0037] The sealing installation of the rear cover 102 and the cylinder housing 101 is completed. In order to make the telescopic rod 103 more sealed during the extension and retraction process, as the telescopic rod 103 is extended and retracted, the piston 9 slides along the inner wall of the cylinder housing 101. By providing the sealing ring 10 and the sealing ring 2 11, the airtightness between the piston 9 and the telescopic rod 103 and the cylinder housing 101 during the extension and retraction process can be improved, thereby improving the accuracy of the underwater pressure test.

[0038] The working principle of this utility model is:

[0039] In this embodiment, in order to improve the sealing effect of the cylinder housing 101, the sealing ring 3 is put on the annular groove 2 of the rear cover 102, and the rear cover 102 is connected to one end of the cylinder housing 101. At the same time, the sleeve plate 4 is pushed to slide along one end of the cylinder housing 101. At this time, the elastic member 8 shrinks and deforms, and as the push plate slides, the card ball 7 bounces from the installation groove 6 into the cavity inside the sleeve plate 4, and then the rear cover 102 is completely pushed into one end of the cylinder housing 101 and fits with the cylinder housing 101. After the cover 102 and the cylinder housing 101 are fitted together, the push plate is released, and the elastic member 8 is used to press the sleeve plate 4 to release the card ball 7. It can reset the push plate, and during the resetting process of the push plate, the push plate squeezes the ball to make the ball move radially along the cylinder housing 101, and finally forms a snap fit between the ball and the slot 12, completing the sealing installation of the back cover 102 and the cylinder housing 101. In order to make the telescopic rod 103 more sealed during the telescopic process, as the telescopic rod 103 is extended and retracted, the piston 9 slides along the inner wall of the cylinder housing 101, and by arranging the sealing ring 10 and the sealing ring 2 11, the air tightness between the piston 9 and the telescopic rod 103 and the cylinder housing 101 during the telescopic process can be improved, thereby improving the accuracy of the underwater pressure test.

[0040] Of course, it will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, but also encompasses the same or similar structures that can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and it is intended that all variations that fall within the meaning and range of equivalents of the claims be encompassed within the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0041] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0042] The technology, shape and structure that are not described in detail in this utility model are all well-known technologies.

Claims

1. An underwater pressure test device, characterized in that: The underwater pressure test device comprises: Telescopic cylinder, which consists of a cylinder housing, a rear cover and a telescopic rod. The cylinder housing and the rear cover are installed and sealed by an installation and removal structure, which is used to achieve sealed installation and removal between the cylinder housing and the rear cover; The sealing structure is installed inside the cylinder housing and is used to improve the sealing effect of the telescopic cylinder during the telescopic adjustment process.

2. The underwater pressure test device according to claim 1, characterized in that: The installation and disassembly structure includes: The sleeve plate is slidably mounted on one end of the cylinder housing located at the rear cover. An elastic member is provided in the enclosed space formed by the cylinder housing and the sleeve plate. The two ends of the elastic member are fixedly connected to the cylinder housing and the sleeve plate respectively. A mounting groove is provided in the middle of the cylinder housing, and a card ball is provided in the middle of the mounting groove. The card slot is arranged on the outer side of the rear cover and is adapted to fit between the card balls. The outer side of the rear cover is provided with an annular groove, and a sealing ring is provided in the middle of the annular groove.

3. The underwater pressure test device according to claim 2, characterized in that: A limiting block is provided on the outer side of the cylinder housing, and the limiting block is adapted to the sleeve plate.

4. The underwater pressure test device according to claim 2, characterized in that: The sealing structure comprises: A piston, the piston being fixedly connected to one end of the telescopic rod located inside the cylinder housing, a sealing ring being provided on the outer side of the piston, and the piston being in sliding engagement with the inner wall of the cylinder housing; The second sealing ring is fixedly mounted on one end of the cylinder housing away from the rear cover, and the second sealing ring is slidably fitted with the telescopic rod.

5. The underwater pressure test device according to claim 2 or 3, characterized in that: The annular grooves are provided in a pair and are symmetrically arranged with respect to the clamping groove.

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