Accurate measurement device and method for loading force of ultralow-temperature equipment

A technology of precise measurement and loading device, applied in measurement device, using stable tension/pressure test material strength, mechanical bearing test, etc., can solve the problems of large heating temperature control temperature drift error and low degree of automation.

Inactive Publication Date: 2021-09-10
BEIJING AEROSPACE PROPULSION INST
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Problems solved by technology

[0006] The technical problem solved by the present invention is: in view of the current prior art, the temperature control of the force sensor required for the bearing test has a low degree of automation and a large error in the heating temperature control temperature drift, and proposes an accurate measurement device for the loading force of ultra-low temperature equipment and method

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  • Accurate measurement device and method for loading force of ultralow-temperature equipment
  • Accurate measurement device and method for loading force of ultralow-temperature equipment
  • Accurate measurement device and method for loading force of ultralow-temperature equipment

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Embodiment Construction

[0026] An accurate measurement device for the loading force of ultra-low temperature equipment, which can highly simulate the test environment and the environment when the force sensor is sent for inspection, and keep it relatively consistent. It can basically solve the problem of temperature drift in low temperature measurement and prolong the working life of the force sensor. Specifically:

[0027] The output end of the loading device used to provide the loading force provides the loading force for the equipment to be loaded through the force sensor and the loading connector. One end of the force sensor is connected to the output end of the loading device, and the other end is connected to the loading connector to measure the loading force. The outside of the loading connector is coated with an electric heating belt that provides a working temperature environment for the force sensor, and a temperature sensor that monitors the temperature of the force sensor in real time is em...

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Abstract

The invention provides an accurate measurement device and method for the loading force of ultralow-temperature equipment, through the measurement device comprising a loading device, to-be-loaded equipment, a force sensor and a loading connector, the high simulation of the working environment of the force sensor is realized, the measurement of the loading force value can be accurately carried out in the low-temperature application field, the closed-loop temperature control of the working environment of the force sensor can be realized, the temperature drift problem of low-temperature measurement is solved, the automation degree of the force sensor temperature control problem required by a bearing test is improved, the structure is stable, and the implementation is easy.

Description

technical field [0001] The invention relates to a device and method for accurately measuring the loading force of ultra-low temperature equipment, belonging to the field of ultra-low temperature technology. Background technique [0002] The turbo pump is one of the main components of the liquid rocket engine. It is driven by the turbine to pressurize the liquid propellant. The turbo pump is composed of an inducer, a pump centrifugal wheel, a turbine, a seal, a bearing, a shaft support system and a casing. The bearing plays a role in supporting the shafting structure in the turbo pump and providing support for the rotation of the shafting parts. Once the bearing fails, it will cause the shafting to lose the basis for stable work. If it is mild, the turbopump will work abnormally. If it is serious, it will cause the turbopump to explode, so that the engine and the rocket will explode. The consequences are extremely serious. Bearings have always been the core and key of turbo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/04G01N3/18G01N3/02
CPCG01M13/04G01N3/18G01N3/02
Inventor 秦雷陈茜茹周琰李超董丽双张栋汪士清
Owner BEIJING AEROSPACE PROPULSION INST
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