Hydraulic test device of pressure-bearing part

Abstract

The utility model discloses a hydraulic test device for a pressure-bearing part, which belongs to the technical field of machining equipment and comprises a body, the longitudinal section of the body is U-shaped, the body is hermetically connected with the pressure-bearing part, a water pressure cavity is formed between the body and the pressure-bearing part, and a threaded hole c communicated with the water pressure cavity is formed in the side wall of the body in a penetrating manner. The pipe threaded hole c is in threaded connection with a nut connecting pipe joint which is connected with a pressing machine. According to the utility model, the body is arranged, so that the water pressure cavity is formed between the body and the pressure-bearing part; an end cover is arranged, so that a middle through hole of the pressure-bearing part is sealed; the hydraulic test of the pressure-bearing part is realized by injecting water into the water pressure cavity and pressurizing the water pressure cavity. The technical problem that the test cannot be completed due to the fact that an existing single part does not have a hydraulic test tool for completing a pressure-bearing surface is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing equipment, and in particular relates to a hydraulic testing device for pressure-bearing parts. Background Art

[0002] A hydraulic test is a pressure test performed on pressure vessels or pipelines using a liquid medium, designed to comprehensively assess the strength and quality of the vessel. The test pressure is generally 1.25 times the design pressure. For pressure vessels in use, it can be 1.25 times the maximum working pressure. The main purpose of a hydraulic test is to pressure-test pressure vessels using a liquid medium to verify their strength and sealing performance. The test pressure is usually 1.25 times the design pressure. During the test, the pressure is slowly increased. After reaching the test pressure, it is maintained for 10 minutes. The pressure is then reduced to the design pressure and maintained for 30 minutes to check whether the vessel maintains constant pressure and leaks within the specified time. Hydraulic testing is widely used in the manufacture and maintenance of various pressure vessels to ensure their safe operation at the design pressure. In addition, hydraulic testing is also of great significance in the design and development of hydraulic systems. It can help verify the applicability of theories, detect component performance, and perform fault diagnosis and predictive maintenance.

[0003] Currently, hydraulic testing is limited to water injection and pressurization tests on complete pressure vessels to detect their strength and sealing performance. However, there is no dedicated hydraulic testing equipment for individual components to comprehensively assess their strength and quality. It is also impossible to perform non-destructive testing on individual components under simulated usage conditions to check for internal and surface defects. Utility Model Content

[0004] The purpose of the utility model is to provide a hydraulic test device for pressure-bearing parts, which solves the technical problem that the existing hydraulic test tooling for individual parts does not have a complete pressure-bearing surface, resulting in the inability to complete the test.

[0005] The technical solution adopted by the utility model is a hydraulic testing device for pressure-bearing parts, including a main body, a longitudinal section of which is U-shaped, the main body being sealed and connected to the pressure-bearing part, a hydraulic cavity being formed between the main body and the pressure-bearing part, a threaded hole c communicating with the hydraulic cavity being penetrated through the side wall of the main body, a pipe threaded hole c being threadedly connected to a nut connecting pipe joint, and the nut connecting pipe joint being connected to a press.

[0006] The utility model is also characterized in that:

[0007] Both ends of the body are provided with threaded holes b, and screws a are connected in the threaded holes b. The screws a are used to connect the pressure-bearing parts and the body.

[0008] A pressure ring is sleeved between the screw a and the pressure-bearing part.

[0009] A lifting threaded hole is provided on any end portion of the body, and the lifting threaded hole is away from the threaded hole b.

[0010] The hydraulic testing device also includes an end cover arranged at the top center of the pressure-bearing part. The end cover is connected to the pressure-bearing part by a screw b. A light hole is opened along the axis of the end cover. The light hole, the pressure-bearing part, and the hydraulic cavity are connected. The end of the light hole away from the pressure-bearing part is set as a threaded hole d, and the threaded hole d is connected to a screw c.

[0011] A copper gasket is sleeved between the screw c and the end cover.

[0012] The inner cavity of the main body is provided with inner fillets near the edges of both ends, and an O-ring a is provided on the inner fillet. The O-ring a is used to seal the main body and the pressure-bearing parts.

[0013] An O-ring b is abutted between the bottom of the end cover and the pressure-bearing part, and the O-ring a is used to seal the end cover and the pressure-bearing part.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model forms a hydraulic cavity between the main body and the pressure-bearing part by providing a body, and seals the central through-hole of the pressure-bearing part by providing an end cap. By injecting water into the hydraulic cavity and applying pressure, the hydraulic pressure test of the pressure-bearing part is performed. This solves the technical problem of existing hydraulic test fixtures that cannot complete the test due to the lack of a complete pressure-bearing surface on individual parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the main body of the hydraulic testing device for pressure-bearing parts of the utility model;

[0017] Figure 2 yes Figure 1 B-direction view;

[0018] Figure 3 This is a schematic structural diagram of the end cover in the hydraulic testing device for pressure-bearing parts of the utility model;

[0019] Figure 4 yes Figure 3 D-direction view;

[0020] Figure 5 This is a structural diagram of the pressure ring in the hydraulic testing device for pressure-bearing parts of the utility model;

[0021] Figure 6 yes Figure 5 C-direction view;

[0022] Figure 7 It is a structural diagram of the pressure-bearing parts in the hydraulic testing device for pressure-bearing parts of the utility model;

[0023] Figure 8 yes Figure 7 A-direction view;

[0024] Figure 9 The utility model is a schematic diagram of the assembly structure of the pressure-bearing parts and the main body of the hydraulic testing device for the pressure-bearing parts.

[0025] In the figure, 1. screw a, 2. pressure ring, 3. pressure-bearing part, 4. screw b, 5. end cover, 6. copper gasket, 7. screw c, 8. O-ring a, 9. O-ring b, 10. body, 11. hydraulic cavity, 12. nut connecting pipe joint, 13. through hole a, 14. threaded hole a, 15. outer circle, 16. pressure-bearing surface, 17. inner hole a, 18. ring groove, 19. inner hole b, 20. lifting threaded hole, 21. threaded hole b, 22. inner hole c, 23. inner fillet, 24. threaded hole c, 25. through hole b, 26. through hole c, 27. outer circle, 28. smooth hole, 29. threaded hole d. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0027] The hydraulic test is carried out after the pressure-bearing part 3 in the utility model is processed into a finished product. The characteristics of the part cannot be changed. It can only be analyzed according to the structure of the finished product. The tooling is designed to carry out the hydraulic test using the characteristics of the finished part. The structure is as follows: Figure 7 、 Figure 8 The pressure-bearing part 3 is made of 2A50 aluminum alloy, and its pressure-bearing surface 16 is multifaceted and must withstand a certain amount of water pressure during operation. Currently, there is no readily available tooling for completing hydraulic testing of the pressure-bearing surface 16 of a single component.

[0028] Example 1

[0029] like Figure 1-2 、 Figure 9 The hydraulic testing device for pressure-bearing parts disclosed in this embodiment includes a main body 10. The longitudinal section of the main body 10 is U-shaped. The main body 10 is sealed and connected to the pressure-bearing part 3. A hydraulic cavity 11 is formed between the main body 10 and the pressure-bearing part 3. A threaded hole c24 communicating with the hydraulic cavity 11 is penetrated through the side wall of the main body 10. The threaded hole c24 is threadedly connected to a nut connecting pipe joint 12, and the nut connecting pipe joint 12 is connected to a press.

[0030] First, consider placing the pressure-bearing surface 16 of the pressure-bearing component 3 within a cavity to form a water-retaining cavity. By providing a clearance fit between the inner hole c22 of the body 10 and the outer circle a15 of the pressure-bearing component 3, a water-retaining cavity 11 is initially formed for the pressure-bearing surface 16. Simultaneously, pipe threads, namely threaded holes c24, are designed on the body 10 for connecting the nut connection pipe joint 12 of the pressure-bearing equipment. The inner hole c22 of the body 10 provides a clearance fit with the outer circle a15 of the pressure-bearing component 3. This inner hole c22 serves as a centering mechanism for assembly with the outer circle a15 of the pressure-bearing component 3, thus forming a preliminary hydraulic cavity 11.

[0031] Example 2

[0032] The hydraulic testing device for pressure-bearing parts disclosed in this embodiment includes a main body 10. The longitudinal section of the main body 10 is U-shaped. The main body 10 is sealed and connected to the pressure-bearing part 3. A hydraulic cavity 11 is formed between the main body 10 and the pressure-bearing part 3. A threaded hole c24 communicating with the hydraulic cavity 11 is penetrated through the side wall of the main body 10. The threaded hole c24 is threadedly connected to a nut connecting pipe joint 12, and the nut connecting pipe joint 12 is connected to a press.

[0033] Both ends of the body 10 have threaded holes b21, which are connected to screws a1. Screws a1 connect the pressure-bearing component 3 to the body 10. These holes b21, along with the through-hole a13 in the pressure-bearing component 3 and the through-hole b25 in the pressure ring 2, provide a secure connection. The through-holes b25, which are used to pass screws a1 through, have their end surfaces used to distribute the tightening force of screws a1, preventing damage to the pressure-bearing component 3.

[0034] like Figure 5 、 Figure 6 As shown, a compression ring 2 is sleeved between screw a1 and pressure-bearing part 3. Considering that pressure-bearing part 3 is made of aluminum alloy, a relatively soft material, screw 1 could damage the contact area between pressure-bearing part 3 and screw 1 when assembling pressure-bearing part 3 and body 10. Therefore, a compression ring 2 is designed. During assembly, compression ring 2 is placed on pressure-bearing part 3, transferring the pressing surface to the surface annular band of compression ring 2, thus protecting the surface of pressure-bearing part 3 from damage.

[0035] Example 3

[0036] The hydraulic testing device for pressure-bearing parts disclosed in this embodiment includes a main body 10. The longitudinal section of the main body 10 is U-shaped. The main body 10 is sealed and connected to the pressure-bearing part 3. A hydraulic cavity 11 is formed between the main body 10 and the pressure-bearing part 3. A threaded hole c24 communicating with the hydraulic cavity 11 is penetrated through the side wall of the main body 10. The threaded hole c24 is threadedly connected to a nut connecting pipe joint 12, and the nut connecting pipe joint 12 is connected to a press.

[0037] Threaded holes b21 are formed at both ends of the main body 10 . Screws a1 are connected in the threaded holes b21 . The screws a1 are used to connect the pressure-bearing part 3 and the main body 10 .

[0038] A lifting threaded hole 20 is formed at either end of the body 10, remote from the threaded hole b21. A lifting eye can be mounted at this hole for lifting the fixture body 10 or the entire assembly after assembly. This placement of the lifting threaded hole 20 remote from the threaded hole b21 prevents interference between the eye and the pressure-bearing component 3 during lifting.

[0039] Example 4

[0040] The hydraulic testing device for pressure-bearing parts disclosed in this embodiment includes a main body 10. The longitudinal section of the main body 10 is U-shaped. The main body 10 is sealed and connected to the pressure-bearing part 3. A hydraulic cavity 11 is formed between the main body 10 and the pressure-bearing part 3. A threaded hole c24 communicating with the hydraulic cavity 11 is penetrated through the side wall of the main body 10. The threaded hole c24 is threadedly connected to a nut connecting pipe joint 12, and the nut connecting pipe joint 12 is connected to a press.

[0041] like Figure 3 、 Figure 4 As shown, the hydraulic test apparatus also includes an end cap 5 positioned at the top center of the pressure-bearing component 3. The end cap 5 is connected to the pressure-bearing component 3 via screws b4. A light hole 28 is provided along the end cap 5's axis. Light hole 28 is used for venting during the initial water injection phase of the hydraulic test. Light hole 28, the pressure-bearing component 3, and the hydraulic cavity 11 are connected. The end of light hole 28, facing away from the pressure-bearing component 3, is threaded with a hole d29. This hole d29 is used to secure the end cap 5 to the pressure-bearing component 3 after venting, thereby providing a seal. Screw c7 is connected to threaded hole d29. After assembly, air will inevitably remain within the hydraulic cavity 11, preventing it from being completely filled during water injection and preventing the hydraulic test from being effective. To this end, light hole 28 is provided on the end cap 5 for venting, and threaded hole 29 is provided for securing the seal. A through hole c26 is provided for screws b4 to secure the end cap 5 to the pressure-bearing component 3 and compress the O-ring 9. The outer circle b27 is used to cooperate with the inner hole b19 of the pressure-bearing part 3 during assembly to play a centering role.

[0042] Example 5

[0043] The hydraulic testing device for pressure-bearing parts disclosed in this embodiment includes a main body 10. The longitudinal section of the main body 10 is U-shaped. The main body 10 is sealed and connected to the pressure-bearing part 3. A hydraulic cavity 11 is formed between the main body 10 and the pressure-bearing part 3. A threaded hole c24 communicating with the hydraulic cavity 11 is penetrated through the side wall of the main body 10. The threaded hole c24 is threadedly connected to a nut connecting pipe joint 12, and the nut connecting pipe joint 12 is connected to a press.

[0044] The hydraulic testing device also includes an end cover 5 arranged at the top center of the pressure-bearing part. The end cover 5 is connected to the pressure-bearing part 3 by a screw b4. A light hole 28 is opened along the axis of the end cover 5. The light hole 28, the pressure-bearing part 3, and the hydraulic cavity 11 are connected. The end of the light hole 28 away from the pressure-bearing part 3 is set as a threaded hole d29, and the threaded hole d29 is connected to the screw c7.

[0045] A copper gasket 6 is sleeved between the screw c7 and the end cover 5. The copper gasket 6 is used at the sealing point. Since copper is relatively soft, the sealing effect can be achieved through the extrusion of the screw c7.

[0046] Example 6

[0047] The hydraulic testing device for pressure-bearing parts disclosed in this embodiment includes a main body 10. The longitudinal section of the main body 10 is U-shaped. The main body 10 is sealed and connected to the pressure-bearing part 3. A hydraulic cavity 11 is formed between the main body 10 and the pressure-bearing part 3. A threaded hole c24 communicating with the hydraulic cavity 11 is penetrated through the side wall of the main body 10. The threaded hole c24 is threadedly connected to a nut connecting pipe joint 12, and the nut connecting pipe joint 12 is connected to a press.

[0048] The hydraulic testing device also includes an end cover 5 arranged at the top center of the pressure-bearing part. The end cover 5 is connected to the pressure-bearing part 3 by a screw b4. A light hole 28 is opened along the axis of the end cover 5. The light hole 28, the pressure-bearing part 3, and the hydraulic cavity 11 are connected. The end of the light hole 28 away from the pressure-bearing part 3 is set as a threaded hole d29, and the threaded hole d29 is connected to the screw c7.

[0049] The inner cavity of the main body 10 is provided with inner fillets 23 near the edges of both ends, and an O-ring a8 is provided on the inner fillet 23. The O-ring a8 is used to seal the main body 10 and the pressure-bearing part 3. Specifically, the O-ring a8 is used to seal the gap. The O-ring is used to solve the water seepage problem at the gap between the inner hole c22 of the main body 10 and the outer circle a15 of the pressure-bearing part 3. An O-ring of appropriate size is selected to be inserted into the outer circle a15 of the pressure-bearing part 3, and the pressure-bearing part 3 and the main body 10 are fastened by screws 1 to play a sealing role. At the same time, considering the safety of the seal, the inner fillet 23 is processed on the main body 10. The inner fillet 23 is used to prevent the O-ring a8 from moving toward the outer circle when under pressure and causing leakage. When the O-ring a8 is subjected to water pressure, it will not move, avoiding water seepage.

[0050] An O-ring b9 abuts the bottom of the end cap 5 against the pressure-bearing part 3. After addressing the sealing issues at the hydraulic cavity 11 and the outer circumference a15 of the pressure-bearing part 10, the sealing issue of the inner hole a17 of the pressure-bearing part 3 is addressed. The annular groove 18 on the pressure-bearing part 3 accommodates an O-ring b9 of appropriate dimensions. To effectively secure the O-ring b9, the end cap 5 is designed with a through hole c26. By utilizing the threaded hole a14 on the pressure-bearing part 3 and fastening the pressure-bearing part 3 and the end cap 5 with screws b4, the pressure-bearing part 3 and the end cap 5 are sealed.

[0051] The specific implementation steps of this utility model are as follows:

[0052] S1, screw the lifting ring into the lifting threaded hole 20 of the main body 10, lift it with an overhead crane and a hook, and place the main body 10 on the assembly workbench;

[0053] S2. Place O-ring a8 over the outer diameter a15 of the pressure-bearing component 3 and adjust it to the base of outer diameter a15. Place outer diameter a15 of the pressure-bearing component 3 into inner hole c22 of the body 10. Place pressure ring 2 on the upper surface of the pressure-bearing component 3. Insert screw a1 through hole b25 of pressure ring 2 and hole a13 of the pressure-bearing component 3, screw it into threaded hole b21 of the body 10, and tighten securely.

[0054] S3. Place the O-ring b9 in the annular groove 18 of the pressure-bearing part 3. Then, insert the outer diameter b27 of the end cover 5 into the inner hole b19 of the pressure-bearing part 3. Pass the screw b4 through the through hole c26 of the end cover 5 and screw it into the threaded hole 14 of the pressure-bearing part 3 and tighten it.

[0055] S4. Use the overhead crane and hook to lift the pressure-bearing component 3 and the main body 10 assembly onto the workbench in the hydraulic test area. Connect the nut connector 12 of the press to the threaded hole c24 of the main body 10 and tighten it. Turn on the press, adjust the water pressure to a low level, and begin filling. When the water overflows the light hole 28 of the end cap 5, close the water line.

[0056] S5, insert the copper washer 6 onto the external thread of the screw c7, screw the screw c7 into the threaded hole d29 of the end cover 5 and tighten it;

[0057] S6. Conduct hydraulic test according to the predetermined pressure test process.

[0058] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0059] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0060] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. Hydraulic testing device for pressure-bearing parts, characterized in that: The invention comprises a main body (10), wherein the longitudinal section of the main body (10) is U-shaped, the main body (10) is sealedly connected to the pressure-bearing part (3), a hydraulic cavity (11) is formed between the main body (10) and the pressure-bearing part (3), a threaded hole c (24) communicating with the hydraulic cavity (11) is formed through the side wall of the main body (10), the threaded hole c (24) is threadedly connected to a nut connecting pipe joint (12), and the nut connecting pipe joint (12) is connected to a press.

2. The hydraulic testing device for pressure-bearing parts according to claim 1, characterized in that: Both ends of the body (10) are provided with threaded holes b (21), and screws a (1) are connected in the threaded holes b (21). The screws a (1) are used to connect the pressure-bearing part (3) and the body (10).

3. The hydraulic testing device for pressure-bearing parts according to claim 2, characterized in that: A pressure ring (2) is sleeved between the screw a (1) and the pressure-bearing part (3).

4. The hydraulic testing device for pressure-bearing parts according to claim 2, characterized in that: A lifting threaded hole (20) is formed on any one end of the body (10), and the lifting threaded hole (20) is away from the threaded hole b (21).

5. The hydraulic testing device for pressure-bearing parts according to claim 1, characterized in that: The hydraulic test device further comprises an end cover (5) arranged at the top center of the pressure-bearing part (3), the end cover (5) being connected to the pressure-bearing part (3) via a screw b (4), the end cover (5) being provided with a light hole (28) along the axis, the light hole (28), the pressure-bearing part (3), and the hydraulic cavity (11) being connected, the end of the light hole (28) away from the pressure-bearing part (3) being provided with a threaded hole d (29), the threaded hole d (29) being connected with a screw c (7).

6. The hydraulic testing device for pressure-bearing parts according to claim 5, characterized in that: A copper gasket (6) is sleeved between the screw c (7) and the end cover (5).

7. The hydraulic testing device for pressure-bearing parts according to claim 5, characterized in that: The inner cavity of the body (10) is provided with inner fillets (23) near the edges of both ends, and an O-ring a (8) is provided on the inner fillet (23). The O-ring a (8) is used to seal the body (10) and the pressure-bearing part (3).

8. The hydraulic testing device for pressure-bearing parts according to claim 7, characterized in that: An O-ring b (9) is in contact between the bottom of the end cover (5) and the pressure-bearing part (3), and the O-ring a (8) is used to seal the end cover (5) and the pressure-bearing part (3).

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