Gas temperature sensor and manufacturing method thereof
A gas temperature and sensor technology, applied to thermometers, thermometers with directly heat-sensitive electric/magnetic elements, instruments, etc., can solve problems such as thermocouple wire fatigue fracture, poor welding performance of high-temperature alloys, and easy damage of temperature sensors , to prevent thread loosening and improve high pressure resistance
Active Publication Date: 2016-01-13
XIAN AEROSPACE PROPULSION INST
View PDF7 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
After the shell and the pressure sleeve are assembled, laser welding is used to effectively connect the two at the edge of the pressure sleeve. However, in actual use, it is found that the high-temperature alloy has poor welding performance. The temperature sensor is easily damaged when used in a vibration and shock environment
[0006] In addition, there are also problems in the manufacturing process of the above-mentioned temperature sensor: the glass frit potting process of the existing temperature sensor is one-time potting. , so that the gas at the temperature measuring end is not easy to discharge
This sintering process cannot fully soften the glass powder, and the molten glass cannot completely fill the temperature measuring end, so that a large gap is formed at the temperature measuring end after the glass powder is sintered, and the thermocouple wire is fatigued and broken in a strong vibration and impact environment.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0030] Such as figure 1 Shown: the present invention provides a kind of gas temperature sensor including housing 1, two thermocouple wires 6, glass frit 4, pressure sleeve 5 and non-alkali glass fiber casing 2; Wherein, the diameter of non-alkali glass fiber casing The diameter is 0.7mm, and its surface is smooth. The small diameter of the non-alkali glass fiber sleeve increases the potting space of the glass powder, which facilitates the glass powder to flow into the bottom of the shell.
[0031] In addition, in order to avoid the problem of microcracks when the pressure sleeve and the housing of the temperature sensor are fixed by welding, the upper end of the housing of the present invention is provided with external threads; thread; the pressure sleeve and the shell are fixed together through threaded connection; and the side wall of the pressure sleeve is provided with a through hole, the purpose is to use the through hole of the pressure sleeve to destroy the external th...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| diameter | aaaaa | aaaaa |
Login to View More
Abstract
The invention belongs to the temperature measuring technical field, and concretely relates to a gas temperature sensor for measuring the temperature of gas and a manufacturing method thereof. The temperature sensor comprises a housing, two thermocouple wires, a sleeve pipe, glass powder, and a press sleeve. The improvement of the temperature sensor lies in that the sleeve pipe is an alkali-free glass fiber sleeve pipe, which is 0.7mm in diameter. The manufacturing method of a temperature sensor comprises the steps of 1) assembling; 2) embedding; 3) sintering; and 4) fixing. The temperature sensor is simple in structure, the manufacturing process is reasonable, and the temperature sensor has the great performance in a high voltage and strong vibrating and impact environment.
Description
technical field [0001] The invention belongs to the technical field of temperature measurement, and in particular relates to a temperature sensor for measuring gas temperature. Background technique [0002] During the development of a new generation of liquid rocket engines, it is necessary to measure the temperature of the gas medium under high pressure, strong vibration and shock environment. [0003] The existing thermocouple temperature sensor includes: housing, thermocouple wire, sleeve (the sleeve is made of quartz fiber sleeve), glass powder and pressure sleeve; wherein, the diameter of the inner cavity of the housing is 3.2mm, and the two thermocouple wires are respectively Insert a quartz fiber sleeve with a diameter of 1.1mm and insert it into the shell, and then fill the inner cavity of the shell with glass powder. This structure has the following two problems: [0004] 1. Due to the large diameter and rough surface of the quartz fiber sleeve, the potting space ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01K7/06
Inventor 赵慧芳李伟李辉李益岚
Owner XIAN AEROSPACE PROPULSION INST