Armored thermocouple for high temperature high pressure and hig flow speed and its using method
An armored thermocouple, high temperature and high pressure technology, applied in the application of electrical devices, electromagnetic means, thermometer applications, etc., can solve the problems of reducing measurement quality, damage to protective casing, weakening the strength of protective casing, etc. Temperature, safe and reliable effect of use
Active Publication Date: 2009-04-29
NINGBO AUQI AUTO INSTR EQUIP
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Problems solved by technology
[0004] Generally speaking, the design of armored thermocouple and armored platinum thermal resistance protection sleeve, such as reducing thermal response time and improving measurement quality, needs to reduce heat transfer loss during measurement, so the tube wall of the protection sleeve is more The thinner the better, and then weaken the strength of the protective sleeve, resulting in damage to the protective sleeve; on the contrary, in order to increase the strength of the thermocouple protective sleeve, it is necessary to increase its thickness, which will increase the thermal response time and reduce the measurement quality. Therefore this is a pair of insoluble contradiction, also is the key point of the present invention
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[0015] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0016] Such as figure 1 As shown, the armored thermocouple for high temperature, high pressure and high flow rate includes a junction box 1, a connecting tube with pressure spring 2, an active joint 3, a long tube 4, a protective sleeve 5 and a thermocouple wire 6, and a thermocouple wire 6 It extends into the inner core composed of junction box 1, connecting pipe 2 with pressure spring, active joint 3, extension pipe 4, and protective sleeve 5. The protective sleeve 5 is divided into upper and lower sections, and the upper section is cylindrical. The diameter of the bottom surface is 32-40mm, the lower section is truncated circular, the diameter of the bottom surface of the lower circular truncated section is 22-28mm, the diameter of the upper end surface is 38-48mm, the junction between the cylinder and the circular platform is smooth, and t...
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Abstract
This invention relates to an armored thermocouple used in high temperature, high pressure and high flow speed including a shell, a thermocouple thread and a protect sleeve in a type of round table, the diameter of which bottom is 22-28mm, the diameter of the other bottom is 32-40mm and the hole diameter at the middle containing the thread is a bit larger than that of the thread. Advantge: the armored thermocouple can work under the following conditions normally for 105 hours: primary steam temperature: 610deg.C, flow speed: 100m / S, static pressure: 30MPa and creep tensile strength: 85MPa and can be used in the measurement to 1000MW and 600MW super critical steam power sets.
Description
technical field [0001] The invention relates to an armored thermocouple, in particular to an armored thermocouple used for high temperature, high pressure and high flow rate and its application method. Background technique [0002] Existing armored thermocouples or sleeve-type armored thermal resistances include housings, thermocouple wires and protective sleeves. Thermocouple wires are inserted into the head protection sleeves of thermocouples, and the temperature of the environment is measured through the protective sleeves. Temperature, to prevent the thermocouple wire from being damaged, so the use environment of the thermocouple is mainly limited by the adaptability of the thermocouple and the measurement conditions. Since the protective sleeves of the commonly used thermocouples are made of ordinary materials and structures, they can only be used under ordinary pressure, temperature and flow rate, and the use environment is limited and the application range is very sma...
Claims
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IPC IPC(8): G01K1/08G01K7/04G01K13/00
Inventor 孙磊
Owner NINGBO AUQI AUTO INSTR EQUIP