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Wax dielectric for heating temperature control valve and its preparing method

A technology of temperature control valve and wax medium, which is applied in the field of special wax, can solve the problems of no performance, suitable temperature-sensing wax material, and no technical disclosure, etc., and achieve the effects of stable product performance, long service life, and good use effect

Inactive Publication Date: 2003-11-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Thermosensing wax has been widely used in some fields, but there is no technology disclosure in heating and temperature control. The main reason is that there is no thermosensing wax material with suitable performance.

Method used

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  • Wax dielectric for heating temperature control valve and its preparing method
  • Wax dielectric for heating temperature control valve and its preparing method
  • Wax dielectric for heating temperature control valve and its preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) With liquid paraffin as raw material, in a distillation unit with 17 theoretical plates, at 1.33 × 10 3 Under the pressure of Pa, the fractions of 260-340°C were prepared at intervals of 5°C, and the melting points of the fractions were shown in Table 1;

[0021] (2) the above-mentioned cuts are carried out sweating and purifying with its melting point as the end point temperature, and the melting points of each purified component are as shown in Table 1;

[0022] Table 1 Vacuum distillation of each component - sweating product melting point

[0023] Distillation range °C Melting point of vacuum distillation product °C Melting point of sweating product °C

[0024] 260~265 5.0 5.3

[0025] 265~270 6.9 7.0

[0026] 270~275 9.0 9.2

[0027] 275~280 11.0 11.1

[0028] 280~285 13.0 13.3

[0029] 285~290 15.1 15.4

[0030] 290~295 17.1 17.3

[0031] 295~300 19.0 19.2

[0032] 300~305 20.9 21.1

[00...

Embodiment 2

[0045] (1) With liquid paraffin as raw material, in a distillation unit with 17 theoretical plates, at 1.33 × 10 3 Under Pa pressure, 260-300°C fractions were prepared at intervals of 10°C; under the same distillation conditions, soap wax (melting point 42.5°C) was used as raw material to prepare 300-340°C fractions, and the melting points of each fraction product were shown in Table 2. shown;

[0046] (2) the above-mentioned cuts are carried out sweating and purifying with its melting point as the end point temperature, and the melting points of each purified component are as shown in Table 2;

[0047] (3) The above-mentioned components purified by sweating are sampled in the same proportion by weight, heated and melted, and mixed uniformly;

[0048] (4) Add 5% activated clay to the above mixed components at 120° C., mix for 0.5 hours and then filter to obtain the target product.

[0049]The expansion performance curve of the heating temperature control valve made of this p...

Embodiment 3

[0062] (1) With liquid paraffin as raw material, in a distillation unit with 17 theoretical plates, at 1.33 × 10 3 Under the pressure of Pa, the fractions of 260-300°C were prepared at intervals of 20°C; under the same distillation conditions, the fractions of 300-340°C were prepared using the minus-line wax paste as the raw material. The melting points of the products of each fraction are shown in Table 3;

[0063] (2) the above-mentioned cuts are carried out sweating and purifying with its melting point as the end point temperature, and the melting points of each purified component are as shown in table 3;

[0064] (3) The above-mentioned components purified by sweating are sampled in the same proportion by weight, heated and melted, and mixed uniformly;

[0065] (4) Add 4% activated clay to the above mixed components at 130° C., mix for 0.5 hours and then filter to obtain the target product.

[0066] The expansion performance curve of the heating temperature control valve ...

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Abstract

The present invention relates to wax dielectric for heating temperature control valve and its preparation process. The destination product is prepared with fluid wax, wax paste, soap wax, etc containing C9-C20 components and through decompression distillation in 5-20 deg.c fraction width, sweating of the fractions in the smelting point temperature as the ultimate temperature, equal weight ratio mixing, refining and other technological steps. The product may be used in heating temperature controlling valve for temperature control in 5-30 deg.c and has basically the same stroke each degree of temperature. The product may be also used in other automatic temperature controlling devices.

Description

1. Technical field [0001] The invention belongs to the technical field of special wax, and in particular relates to a waxy temperature medium for an automatic temperature regulating valve, in particular to a preparation method of a waxy temperature medium for a heating temperature control valve. 2. Background technology [0002] The temperature control valve using wax as the temperature-sensing medium is a self-operated switch, which uses the volume change of the wax medium during the phase transition to control the opening of the valve to achieve the purpose of controlling the flow of the material flow. It also has the ability to sense changes in ambient temperature. and the dual role of the output action. This wax-quality temperature control valve has the advantages of temperature characteristics that do not change significantly with system pressure, high mechanical strength, good chemical stability, easy mass production and installation, low cost, and stable and reliable ...

Claims

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Application Information

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IPC IPC(8): C08L91/06C10G73/12H01H37/76
Inventor 孙剑锋高蒿
Owner CHINA PETROLEUM & CHEM CORP
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