Extra-high pressure reciprocating sealing test device

Abstract

The invention discloses an extra-high pressure reciprocating sealing test device. The extra-high pressure reciprocating sealing test device comprises a thick-walled cylinder, two groups of oil gathering end covers, a sealing assembly, a reciprocating motion mechanism, a high-pressure oil injection system, a sensing system and two groups of oil liquid collecting devices; the two groups of oil gathering end covers are correspondingly installed at the two ends of the thick-walled cylinder in a transition fit mode; the sealing assembly is placed in the thick-walled cylinder; the high-pressure oilinjection system is connected with the thick-walled cylinder; the reciprocating motion mechanism penetrates through the sealing assembly and the two groups of oil gathering end covers; and the two groups of oil liquid collecting devices are correspondingly connected with the two groups of oil gathering end covers. According to the extra-high pressure reciprocating sealing test device, a series ofmicro grooves are formed in the inner surface of an elastic sleeve in the axial direction, the micro grooves are filled with high-pressure oil liquid during working, a sealing surface of the elastic sleeve is deformed under the action of inner pressure and outer pressure to realize sealing, the elastic sleeve has elasticity, disassembly and installation are convenient, and the test operation is convenient.

Description

technical field [0001] The invention relates to the fields of fluid ultra-high pressure technology and mechanical engineering, in particular to an ultra-high pressure reciprocating sealing test device. Background technique [0002] The structure of the metal gap seal is simple. As a dynamic seal, it can work for a long time under harsh working conditions. It has important applications in the fields of power engineering, oil exploration and mechanical engineering. It is often used in fuel injection systems, oil fracturing pumps and other devices. of the seal. Therefore, the research on the sealing performance of metal gap seals, especially for the measurement of friction and leakage, is of great significance to the design of high performance metal gap seals. Since metal gap sealing involves comprehensive sealing technology in multiple disciplines such as materials science, mechanics, mechanics, tribology and heat transfer, it is difficult to measure physical quantities such ...

AI Technical Summary

Problems solved by technology

Since metal gap sealing involves comprehensive sealing technology in multiple disciplines such as materials science, mechanics, mechanics, tribology and heat transfer, it is difficult to measure physical quantities such as friction and leakage in reciprocating sealing systems. It will be more difficult to measure under high pressure or high temperature conditions; at present, there are almost no ultra-high pressure reciprocating sealing test devices, and similar documents mainly include: patents (application numbers: CN201510993184.0 and CN201410639718.5) disclose two kinds of rubber rings High-pressure dynamic sealing test device, but this test device is mainly aimed at gas sealing, and the sealing pressure condition is also limited; the patent (application number: CN105738039A) discloses a measuring device and method for measuring the annular gap flow of the plunger-copper sleeve pair, but This invention only provides the static flow measurement of the plunger-copper sleeve pair, and the maximum test pressure is 10MPa

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