The thermal sleeve type heat resistance

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WZP series The thermal sleeve type heat resistance Mainly used for the measurement of power plant st…

Productoverview:
WZP series The thermal sleeve type heat resistance Mainly used for the measurement of power plant steam pipe and boiler temperature. The heat protection tube and the structure resistance can be separated, when in use, the user can set the welding thermal or mechanical fixed on the equipment, and then loaded on the galvanic can work, its advantage is to improve the protection of pipe work pressure and service life, and convenient for resistance repair or replacement.

Two, work principle:
WZP series The thermal sleeve type heat resistance Two different components of the conductor (called thermocouple wire or thermal electrode) is connected to the two ends of the synthetic circuit, when the junction temperature at the same time, in the loop will produce electromotive force, this phenomenon is called the thermoelectric effect, and this is called thermal electromotive force emf. A thermocouple is used to measure temperature of this principle, which is directly used for measuring the temperature of a medium called the working end (also known as the measuring end), the other end is called the cold end (also known as the end of the cold end compensation); and display instrument or meter display instrument connection, will point out that the thermoelectric potential generated by thermocouple.
Three, application:
WZP series The thermal sleeve type heat resistance Suitable for steam pipe, boiler and other on temperature, pressure and flow requirements of the place.

Four, main features:
1, fast thermal response time, reduce the dynamic error;
2, small diameter, length is not limited;
3, high measuring accuracy;
4, imported film resistor, stable and reliable performance.

Five, technical parameters:
1, electrical outlet: M20x1.5, NPT1/2;
2, size: M20x1.5, NPT1/2 connection;
3, protection grade: IP65.
Six, thermal sleeve type protective sleeve installation steps are as follows:
1, in the pipeline of the measured medium hole. In order to protect the triangle cone casing firmly installed on the pipe wall, the through holes can drill a diameter of 38mm, and then expanded to 42mm in diameter, 38mm diameter hole reaming will keep 10mm long.
2, the installation of welding casing. Install the casing length, should ensure the protection of the triangle cone sleeve firmly against the hole diameter of 38mm.
3, inserted into the protective sleeve. When the triangular cone protective sleeve with 38mm hole seal, protect casing and casing should be installed between the welding gap enough.
4, the protective sleeve is welded on the installation sleeve.

Seven, installation notes:

For the installation of thermal resistance; thermal resistance should pay attention to several details in the installation and use; for the temperature measurement is accurate, safe and convenient maintenance, and does not affect the equipment operation and production operation. To meet the following requirements, in the selection of installation site of thermal resistance and insertion depth should pay attention to the following 2 points:
1, with a protective casing with heat transfer thermal resistance and heat loss, in order to reduce the measurement error, the thermal resistance should have sufficient depth of insertion:
A, when measuring the original insertion depth is more than 1m, should be installed vertically, or installing supporting frame and a protective sleeve.
B, if you need to measure the flue gas temperature is, while the flue diameter is 1000mm, the thermal resistance can insert depth 500mm.
Heat resistance C, temperature measurement for fluid pipe center, generally the measuring end is inserted into the pipe center (vertical or inclined installation). If the measured fluid pipe diameter is 100 mm, the thermal resistance should choose the insertion depth of 50~100 mm (should take into account the size installation base or flange).
D, for temperature measurement of high temperature and high pressure and high speed fluid (such as main steam temperature), in order to reduce resistance to the fluid and prevent the protective sleeve to protect the casing fracture under the influence of the fluid, can take the protection tube or by shallow shallow inserted. The thermal resistance protection sleeve type plug, which is inserted into the main steam pipeline depth not less than 75mm; the standard insert depth 100mm.
2 in order to measure the thermal resistance and the measured end has sufficient heat exchange medium, should choose a reasonable measuring position, to avoid the valve, elbow and piping and equipment installed near dead heat resistance.

Eight, unified design of thermal resistance:

No heat resistance fixing device:

Note: 1, "*" index number for special order specification;
2, No. 120, 121 for the splash proof junction box, type 130, 131 waterproof type connection box.
Fixed screw type heat resistance:

Note: 1, "*" index number for special order specification;
2, nominal pressure: 10MPa;
3, No. 220, 221 for the splash proof junction box, type 230, 231 waterproof type connection box.
A movable flange type thermal resistance:

Note: 1, "*" index number for special order specification;
2, No. 320, 321 for the splash proof junction box, type 330, 331 waterproof type connection box.