Hydrostatic test device for special-shaped cylinder sleeve
By designing a T-shaped hydrostatic testing device and using a combination of O-rings and gaskets for sealing, the sealing problem of irregular cylinder liners was solved, ensuring the accuracy and reliability of the test.
Patent Information
- Application Number
- CN202520120071.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-01-20
AI Technical Summary
Existing hydrostatic testing fixtures cannot meet the sealing requirements of irregular cylinder liners, which can easily lead to deformation of thin-walled cylinder liners and affect the control of sealing tests.
A T-shaped hydrostatic testing device including a base and an upper pressure plate was designed. It adopts a combination of O-rings and gaskets for sealing, combined with peripheral and central fixation, to ensure the sealing performance of irregular cylinder liners.
It achieves the sealing requirements of the hydrostatic test for irregular cylinder liners, prevents cylinder liner deformation, and ensures the accuracy and reliability of the test results.
Smart Images
Figure CN223650060U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of diesel engine cylinder liner water pressure testing technology, specifically relating to a water pressure testing device for irregular cylinder liners. Background Technology
[0002] A typical diesel engine cylinder liner consists of a top support shoulder, a middle upper belt section, and a bottom lower belt section. It is a rotating part, and its sealing test pressure is relatively low, typically 0.7MPa-0.8MPa. Hydraulic pressure testing fixtures often use upper and lower cover plates to seal the cylinder liner's inner bore. However, for irregularly shaped cylinder liners requiring high-pressure sealing tests, the sealing method of ordinary hydraulic pressure testing fixtures is insufficient and can easily cause deformation of the thin-walled cylinder liner, ultimately leading to uncontrolled cylinder liner sealing tests. Therefore, improvements have been proposed to address these issues. Utility Model Content
[0003] The technical problem solved by this utility model is to provide a hydrostatic testing device for irregular cylinder liners, which solves the problems in the prior art where the sealing method of the hydrostatic testing fixture does not meet the sealing requirements, easily causes deformation of thin-walled cylinder liners, and leads to the inability to control the cylinder liner sealing test.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] A hydrostatic testing device for irregular cylinder liners includes a base and an upper pressure plate, both of which are T-shaped structures. The middle part of the base is inserted into the inner hole of one end of the irregular cylinder liner, and the end of the irregular cylinder liner is in sealed contact with the base. The middle part of the upper pressure plate is inserted into the inner hole of the other end of the irregular cylinder liner, and the end of the irregular cylinder liner is in sealed contact with the upper pressure plate. The periphery and center of the base and the upper pressure plate are fixedly connected.
[0006] Further defining the above solution, the base is a T-shaped structure composed of a base plate and an inner support. A bottom washer for contacting the end face of the irregular cylinder liner is fixed on the base plate. The inner support of the base is clearance-fitted with the inner cavity of the irregular cylinder liner. The root of the inner support of the base is provided with an annular boss that matches the structure of the inner end of the irregular cylinder liner. Two annular grooves I are provided on the outer circular surface of the annular boss. An O-ring seal I is provided in the annular grooves I. The O-ring seal I is used to contact the surface of the inner end of the irregular cylinder liner.
[0007] Further defining the above scheme, the upper pressure plate is a T-shaped structure composed of an upper plate and an inner support of the upper plate. A top washer for contacting the end face of the irregular cylinder liner is fixedly provided on the upper plate. The inner support of the upper plate is clearance-fitted with the inner cavity of the irregular cylinder liner. Two annular grooves II are provided on the outer circle of the root of the inner support of the upper plate. An O-ring seal II is provided in the annular grooves II. The O-ring seal II is used to contact the end surface of the inner hole of the irregular cylinder liner.
[0008] As a further limitation of the above scheme, the upper pressure plate is provided with an exhaust structure.
[0009] Further defining the above solution, the base and the upper pressure plate are connected around the perimeter by double-ended studs. One end of the double-ended stud is threaded into the base and locked with a nut, while the other end of the double-ended stud passes through the upper pressure plate and is screwed with a shoulder nut.
[0010] Further defining the above solution, the center of the base and the upper pressure plate are connected by bolts, and a sealing washer and an O-ring III are provided between the nut of the bolt and the contact surface of the upper pressure plate.
[0011] Advantages of this utility model compared to the prior art:
[0012] 1. This solution is a test fixture device designed for hydrostatic testing of irregular cylinder liners. It is used to clamp irregular cylinder liners and ensure that the sealing of irregular cylinder liners meets the requirements of hydrostatic testing. It prevents problems such as deformation of thin-walled cylinder liners and uncontrolled cylinder liner sealing test. The device has a novel design concept, simple structure, economy and reliability, and can also be used to solve similar problems of cylinder liners of other engine models. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model;
[0014] Figure 2 This utility model Figure 1 A schematic diagram of the P-direction structure. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0016] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0017] Please see Figure 1-2 The embodiments of this utility model are described in detail below.
[0018] Example: A hydrostatic testing device for irregularly shaped cylinder liners, see reference. Figure 1-2 As shown, the device includes a base 1 and an upper pressure plate 10, both of which are T-shaped structures. During the non-standard cylinder liner test, the cylinder liner is installed upside down on the test apparatus. The middle portion of the base 1 is inserted into the inner hole of one end of the non-standard cylinder liner 13, with the end of the non-standard cylinder liner 13 in sealed contact with the base 1. The middle portion of the upper pressure plate 10 is inserted into the inner hole of the other end of the non-standard cylinder liner 13, with the end of the non-standard cylinder liner 13 in sealed contact with the upper pressure plate 10. The base 1 and the upper pressure plate 10 are fixedly connected at their periphery and center.
[0019] In one specific embodiment: the base 1 is a T-shaped structure composed of a base plate 1-1 and a base inner support 1-2. A bottom washer 2 for contacting the end face of the irregular cylinder liner 13 is fixed on the base plate 1-1. The base inner support 1-2 is clearance-fitted with the inner cavity of the irregular cylinder liner 13. The root of the base inner support 1-2 is provided with an annular boss 1-3 adapted to the structure of the inner hole end of the irregular cylinder liner 13. Two annular grooves I1-4 are provided on the outer circular surface of the annular boss 1-3. An O-ring seal I3 is provided in the annular grooves I1-4. The O-ring seal I3 is used to contact the inner hole end surface of the irregular cylinder liner 13.
[0020] The upper pressure plate 10 is a T-shaped structure composed of an upper plate 10-1 and an inner support 10-2. A top washer 11 for contact with the end face of the irregular cylinder liner 13 is fixedly provided on the upper plate 10-1. The inner support 10-2 has a clearance fit with the inner cavity of the irregular cylinder liner 13. Two annular grooves II 10-3 are provided on the outer circumference of the root of the inner support 10-2, and O-ring seals II 5 are provided within the annular grooves II 10-3. The O-ring seals II 5 are used to contact the end surface of the inner bore of the irregular cylinder liner 13. An exhaust structure 10-4 is provided on the upper pressure plate 10.
[0021] In this embodiment, when the irregular cylinder liner needs to undergo a hydrostatic test, the irregular cylinder liner is placed upside down on the base. The large end face of the irregular cylinder liner and the base are sealed by a gasket and a sealing ring. The small end of the irregular cylinder liner and the upper pressure plate adopt a combination of radial sealing and end face sealing. This can ensure that the sealing of the irregular cylinder liner in the hydrostatic test meets the requirements and prevent problems such as deformation of the thin-walled cylinder liner and uncontrolled cylinder liner sealing test.
[0022] In one specific embodiment: the base 1 and the upper pressure plate 10 are connected around the perimeter by double-ended studs 4. One end of the double-ended stud 4 is threaded onto the base 1 and locked by a nut 12. The other end of the double-ended stud 4 passes through the upper pressure plate 10 and is screwed with a shoulder nut 6.
[0023] The center of the base 1 and the upper pressure plate 10 are connected by bolts 8. A sealing washer 9 and an O-ring Ⅲ7 are provided between the nut of the bolt 8 and the contact surface of the upper pressure plate 10.
[0024] In this embodiment, in order to ensure the strength of the tooling and prevent cylinder liner deformation, a combination of peripheral fixing and core fixing is adopted, which greatly improves safety.
[0025] This hydrostatic testing device has a novel design concept, simple structure, and is economical and reliable. It can also be used to solve similar problems of cylinder liners in other engine models.
[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A hydrostatic testing device for irregularly shaped cylinder liners, characterized in that: The device includes a base (1) and an upper pressure plate (10), both of which are T-shaped structures. The middle part of the base (1) is inserted into the inner hole of one end of the shaped cylinder liner (13), and the end of the shaped cylinder liner (13) is in sealed contact with the base (1). The middle part of the upper pressure plate (10) is inserted into the inner hole of the other end of the shaped cylinder liner (13), and the end of the shaped cylinder liner (13) is in sealed contact with the upper pressure plate (10). The periphery and center of the base (1) and the upper pressure plate (10) are fixedly connected.
2. The hydrostatic testing device for irregular cylinder liners according to claim 1, characterized in that: The base (1) is a T-shaped structure composed of a base plate (1-1) and a base inner support (1-2). A bottom washer (2) for contacting the end face of the shaped cylinder liner (13) is fixed on the base plate (1-1). The base inner support (1-2) and the inner cavity of the shaped cylinder liner (13) are in clearance fit. The root of the base inner support (1-2) is provided with an annular boss (1-3) adapted to the structure of the end of the inner hole of the shaped cylinder liner (13). Two annular grooves I (1-4) are provided on the outer circular surface of the annular boss (1-3). An O-ring seal I (3) is provided in the annular groove I (1-4). The O-ring seal I (3) is used to contact the end surface of the inner hole of the shaped cylinder liner (13).
3. The hydrostatic testing device for irregular cylinder liners according to claim 1, characterized in that: The upper pressure plate (10) is a T-shaped structure composed of an upper plate (10-1) and an upper plate inner support (10-2). A top washer (11) for contacting the end face of the irregular cylinder liner (13) is fixed on the upper plate (10-1). The upper plate inner support (10-2) is clearance-fitted with the inner cavity of the irregular cylinder liner (13). Two annular grooves II (10-3) are provided on the outer circle of the root of the upper plate inner support (10-2). An O-ring seal II (5) is provided in the annular groove II (10-3). The O-ring seal II (5) is used to contact the end surface of the inner hole of the irregular cylinder liner (13).
4. The hydrostatic testing device for irregular cylinder liners according to claim 3, characterized in that: The upper pressure plate (10) is provided with an exhaust structure (10-4).
5. The hydrostatic testing device for irregular cylinder liners according to claim 1, characterized in that: The base (1) and the upper pressure plate (10) are connected around the perimeter by double-headed studs (4). One end of the double-headed studs (4) is threaded onto the base (1) and locked by a nut (12). The other end of the double-headed studs (4) passes through the upper pressure plate (10) and is screwed with a shoulder nut (6).
6. The hydrostatic testing device for irregular cylinder liners according to claim 1, characterized in that: The center of the base (1) and the upper pressure plate (10) are connected by bolts (8), and a sealing washer (9) and an O-ring (7) are provided between the nut of the bolt (8) and the contact surface of the upper pressure plate (10).