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"8" hole sealing device and method for gear pump test

A technology for testing and gear pumps, which is applied in the direction of measuring devices, engine sealing, and applying stable tension/pressure to test the strength of materials. To avoid problems such as large force, to achieve the effects of avoiding shell damage, reducing sealing area, high stability and adaptability

Active Publication Date: 2021-04-02
BEIJING HANGKE ENGINE CONTROL SYST SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem solved by the present invention is: the present invention proposes a "8" type hole sealing device and method for the gear pump test. During the sealing, the housing components bear too much compression force, the sealing effect is unstable, and the housing is easily deformed and damaged

Method used

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  • "8" hole sealing device and method for gear pump test
  • "8" hole sealing device and method for gear pump test
  • "8" hole sealing device and method for gear pump test

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Embodiment Construction

[0037] The present invention will be described in further detail below.

[0038] see figure 1 , The "8" type hole has two intersecting circles from its cross-section.

[0039] see figure 2 The "8" hole of the housing 6 is sealed by the "8" hole sealing device, the "8" hole sealing device includes a screw 1, a bottom plate 2, an "8" type plug 3, a pad 4, and a sealing Circle 5. Wherein, a spacer 4 is placed at the bottom of the "8"-shaped hole, and the "8"-shaped plug 3 is put into the "8"-shaped hole. see Figure 3-4 There is a sealing groove with a stepped structure on the edge of the outer end face of the "8" type plug 3, and a sealing ring 5 with a matching shape is placed in the sealing groove, and the bottom plate 2 covers the "8" type plug 3, and a combined seal is formed after tightening the screw 1 .

[0040] Wherein, choosing a spacer 4 with an appropriate height can ensure the installation height of the "8" type plug 3 .

[0041] For an "8" type hole, in orde...

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Abstract

The invention belongs to the field of testing of an aero-engine gear pump shell assembly, and particularly relates to an '8''-shaped hole sealing device and method for a gear pump test. At present, the '8'-shaped hole cannot be radially sealed and is often limited by a shell assembly structure, so that some other oil way holes can also be affected, the shell assembly can bear large end surface sealing compression force before pressing, damage to the shell deformation and the like is caused, the sealing effect is unstable, and even the shell is damaged. The invention provides an '8'-shaped holesealing device and method for a gear pump test, a cushion block and a '8'-shaped plug are sequentially put in the '8''-shaped hole, a sealing groove with a step structure is arranged on the edge of the outer end surface of the '8'-shaped plug in sequence, the sealing groove is in an arc transition in the transition area, the sealing groove is internally provided with a sealing ring matched with the shape, and the sealing groove is tightly pressed through a bottom plate, so that the problems that the shell assembly in the end surface seal is too large in compression force, unstable in sealingeffect and easy to cause deformation damage of the shell are solved.

Description

technical field [0001] The invention belongs to the test field of an aero-engine gear pump shell assembly. In particular, it relates to an "8" type hole sealing device and method for a gear pump test. Background technique [0002] During the pressure test of some gear pump housing components, the "8" type hole not only cannot be tested for partial pressure, but can only be used for high pressure 8MPa~14MPa, and the "8" type hole cannot be used for radial seals, and end face seals are often used. , to cover the entire "8" hole on the end face, but often limited by the structure of the shell assembly, the end face seal will also affect some other oil passage holes, which not only causes the shell assembly to bear a lot of pressure before pressing The compression force of the end face seal will cause damage such as deformation of the shell, and the sealing effect is unstable. There are higher requirements for the rigidity of the frame structure of the tooling and the compressi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/06G06F30/17G01N3/12G01N3/02
CPCF16J15/06F16J15/062G01N3/02G01N3/12G01N2203/0042
Inventor 王辉王兆起张耀刘长兴
Owner BEIJING HANGKE ENGINE CONTROL SYST SCI & TECH
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