CN103805276A - Preparation method of temperature-sensitive medium for waxy temperature control valve - Google Patents
Preparation method of temperature-sensitive medium for waxy temperature control valve Download PDFInfo
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- CN103805276A CN103805276A CN201210440610.4A CN201210440610A CN103805276A CN 103805276 A CN103805276 A CN 103805276A CN 201210440610 A CN201210440610 A CN 201210440610A CN 103805276 A CN103805276 A CN 103805276A
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Abstract
The invention discloses a preparation method of a temperature-sensitive medium for a waxy temperature control valve. The target product of the invention is prepared by using petroleum wax substances containing C9-C20 components as raw materials, and through processes of reduced pressure distillation, intermittent fraction taking, mixing and the like. A waxy temperature control valve prepared by the product of the invention can realize temperature control at a range of 10-17 DEG C, and has largely the same stroke for each degree. The waxy temperature-sensitive medium of the invention can be used for automatic temperature control devices which require uniform and linear stroke, and is especially suitable for field in which the temperature of a cooling medium is controlled by a waxy temperature control valve so as to realize high-precision control of the temperature of electrical apparatus elements.
Description
Technical field
The invention belongs to special wax technical field, particularly relate to a kind of preparation method of temperature-sensitive medium used for wax temperature control valve.Specifically, sensitive medium prepared by the present invention can for need to be within the scope of narrower temperature control (10～17 ℃) temperature control, and on the even linear temperature controlling valve of stroke, this wax temperature controlling valve can pass through to control coolant temperature, thereby reaches the object of high precision control apparatus component temperature.
Background technology
Electronic devices and components need to could be stablized under specific temperature environment, long term operation, for some should not keep in repair and the very large situation of environmental temperature fluctuation scope under, electronic devices and components must adopt the temperature of heat-eliminating medium control electronic devices and components Working environment.For this situation, adopt at present the flow of special heat-eliminating medium in active electric sub-control system control cold and hot fluid oil circuit to control the operating ambient temperature of electronic devices and components.This active electric sub-control system complex structure, weight greatly, easily lost efficacy, so be badly in need of improve.
The temperature controlling valve of making sensitive medium with Wax is a kind of valve of self-forced type, thereby be to utilize volume change by-pass valve control aperture in wax class sensitive medium phase transition process to reach the object of controlling logistics flux, it has the several functions such as induction, execution, feedback, definite value simultaneously.The advantages such as this temperature controlling valve has the not considerable change with system pressure of temperature profile, physical strength is high, chemical stability good, easily mass-produced and installation, cost is low, temperature control is reliable and stable, thereby be able to widespread use aspect temperature control.
Compared with the active electric sub-control system adopting with current special electronic devices and components temperature control, if adopt wax temperature controlling valve control temperature, will there is the advantages such as volume is little, lightweight, simple in structure, dependable performance.Therefore, to the Application Areas that should not keep in repair and require working life to grow, adopt wax temperature controlling valve to control the flow of special heat-eliminating medium in cold and hot fluid oil circuit, and then control the operating ambient temperature of electronic devices and components, significant to guaranteeing the work-ing life of electronic devices and components.
The prepared wax temperature controlling valve of wax sensitive medium that uses prior art to prepare, temperature control scope is more than 10～15 ℃; Existing technology of preparing means are single, take solvent method as many; And the linear degree of temperature control is very poor, or in relative wide temperature range stroke linear.For example: DD 241,829, DD 241,830 patent Introductions such as grade are with solvent-extracted method, and the product of preparation is at 80～90 ℃ of scope temps.The preparation method of RU 2,009,171, US 5,223,122 patent Introductions such as grade, all take solvent extraction as main.
The prepared wax temperature controlling valve of product of the patent Introductions such as CN02109668.6, CN200310104909.3, CN200510046426.1, stroke uniform line in relative wide temperature range (25 ℃ even 50 ℃).The preparation method of these patent Introductions or environment is had to pollution, or wax temperature controlling valve temperature control wide ranges, stroke linear that thus prepared by product are poor, can not meet some special requirements, as need to be within the scope of narrower temperature control the evenly technical requirements such as linearity, performance long time stability of (10～17 ℃) temperature control, stroke.Because the character of wax sensitive medium is the key factor that determines wax temperature controlling valve performance, therefore preparing special sensitive medium is the prerequisite of exploitation temperature controlling valve.
Summary of the invention
The object of the present invention is to provide one to be applicable to temperature-sensitive medium used for wax temperature control valve, specifically can be at 10～17 ℃ of scope temps, and the basically identical wax sensitive medium of the stroke value of every degree.Wax sensitive medium of the present invention, is particularly useful for needing the evenly temperature automatically controlled device of linearity of stroke, especially for passing through wax temperature controlling valve control coolant temperature, thus the field of high precision control apparatus component temperature.
As everyone knows, the character of wax sensitive medium is consisting of determining.The object of the invention product need to have the evenly character of linearity of stroke in narrow temperature control scope (10～17 ℃), and this just requires its composition accurately to control, and make the carbon distribution of product narrower, and the ratio of the hydrocarbon component of various carbon numbers is close.
The present invention is the water distilling apparatus (having 15～20 blocks of theoretical trays) that utilizes separation efficiency lower, first produce the narrower cut of boiling range (boiling range is 5～10 ℃), get by interval the mode that cut (choosing at least two cuts) mixes again, product composition is accurately controlled, thereby realized the requirement that makes product property meet high precision control apparatus component temperature wax temperature controlling valve.Compared with preparing the decomposite mode of high purity hydrocarbon with the rectifier unit that utilizes high separating efficiency, preparation method of the present invention more easily realizes.
The preparation method of temperature-sensitive medium used for wax temperature control valve of the present invention comprises following content:
(1) to contain C
9～C
20the petroleum wax substance of composition is raw material, in the water distilling apparatus with 15～20 blocks of theoretical trays, raw material is produced to 270～300 ℃ of cuts by the boiling range of 5～10 ℃;
(2) in above-mentioned cut, choose suitable cut, by choosing at least two cuts at interval of the mode of 1 or 2 cut, equal ratio heating and melting mixing by weight, obtains temperature-sensitive medium used for wax temperature control valve.
According to the preparation method of temperature-sensitive medium used for wax temperature control valve of the present invention, wherein said raw material refers to and contains the petroleum wax of carbonatoms at the normal paraffin of 9～20, especially whiteruss.
Suitable cut described in step (2), refers to that fusing point is the cut of 8～19 ℃.Interval refers to the discontinuous cut of choosing, can 1, interval cut, and also can 2, interval cut.The fusing point of at least two selected cuts distributes relatively even within the scope of 8～19 ℃.
The advantage of the inventive method is: by selecting suitable raw material, utilize the water distilling apparatus of lower separation efficiency, the mode of getting cut by interval reaches accurate control product composition and then reaches the object of controlling product property.Preparation method's of the present invention product performance are stable, can be at 10～17 ℃ of scope temps, and the stroke value of every degree is basically identical, can be used for high precision control apparatus component temperature wax temperature controlling valve.The physics of wax sensitive medium of the present invention, stable chemical nature, during for the preparation of wax temperature controlling valve, can obtain good result of use, and have longer work-ing life.
Accompanying drawing explanation
Fig. 1 to Fig. 3 is respectively embodiment 1 to the expansion character curve of executing temperature-sensitive medium used for wax temperature control valve prepared by example 3, and in figure, X-coordinate is temperature, and ordinate zou is relative travel amount.
Embodiment
Utilize wax temperature controlling valve to there is temperature sensor to change and make the characteristic of corresponding adjustment, the temperature that can be applied to electronic devices and components temperature controlling system regulates automatically, its principle is by the mixed temperature of special heat-eliminating medium in its induction cold and hot fluid oil circuit, automatically regulate the flow of special heat-eliminating medium in cold and hot fluid oil circuit, thereby reach the object of the temperature of automatic adjusting blending agent.
Preparation method and the expansion character of wax sensitive medium of the present invention are described by the following examples.
Embodiment 1
(1) take whiteruss as raw material, having in the water distilling apparatus of 17 blocks of theoretical trays, 1.33 × 10
3under Pa pressure, prepare the cut of 270～300 ℃ take 5 ℃ as interval, each section of cut product fusing point is as shown in table 1.
The each underpressure distillation product of table 1 fusing point.
| Cut scope, ℃ | Product fusing point, ℃ |
| 270～275 | 9.0 |
| 275～280 | 11.0 |
| 280～285 | 13.0 |
| 285～290 | 15.1 |
| 290～295 | 17.1 |
| 295～300 | 19.0 |
(2) interval is got above-mentionedly through underpressure distillation purification cut, i.e. 270～275 ℃ of cuts, 280～285 ℃ of cuts, 290～295 ℃ of cuts, and by above-mentioned three kinds of cuts identical proportional sampling heating and melting by weight, mixing, obtain object product.
The expansion character curve of the temperature-sensitive medium used for wax temperature control valve that product is made thus as shown in Figure 1.
Embodiment 2
(1) with the step (1) of embodiment 1.
(2) interval is got above-mentionedly through underpressure distillation purification cut, i.e. 270～275 ℃ of cuts, 285～290 ℃ of cuts, 295～300 ℃ of cuts, and by above-mentioned three kinds of cuts identical proportional sampling heating and melting by weight, mixing, obtain object product.
The expansion character curve of the temperature-sensitive medium used for wax temperature control valve that product is made thus as shown in Figure 2.
Embodiment 3
(1) take whiteruss as raw material, having in the water distilling apparatus of 17 blocks of theoretical trays, 1.33 × 10
3under Pa pressure, prepare the cut of 270～300 ℃ take 10 ℃ as interval, each section of cut product fusing point is as shown in table 2.
The each component underpressure distillation of table 2 product fusing point.
| Cut scope/℃ | Product fusing point/℃ |
| 270～280 | 10.1 |
| 280～290 | 14.1 |
| 290～300 | 18.0 |
(2) interval is got above-mentionedly through underpressure distillation purification cut, i.e. 270～280 ℃ of cuts, 290～300 ℃ of cuts, and by above-mentioned two kinds of cuts identical proportional sampling heating and melting by weight, mixing, obtain object product.
The expansion character curve of the temperature-sensitive medium used for wax temperature control valve that product is made thus as shown in Figure 3.
Claims (6)
1. a preparation method for temperature-sensitive medium used for wax temperature control valve, comprises following content:
(1) to contain C
9～C
20the petroleum wax substance of composition is raw material, in the water distilling apparatus with 15～20 blocks of theoretical trays, raw material is produced to 270～300 ℃ of cuts by the boiling range of 5～10 ℃;
(2) in above-mentioned cut, choose the cut of suitable fusing point, by choosing at least two cuts at interval of the mode of 1 or 2 cut, equal ratio heating and melting mixing by weight, obtains temperature-sensitive medium used for wax temperature control valve.
2. in accordance with the method for claim 1, it is characterized in that, described petroleum wax substance is whiteruss.
3. in accordance with the method for claim 1, it is characterized in that, the fusing point of the described cut of step (2) is 8～19 ℃.
4. in accordance with the method for claim 1, it is characterized in that, the temperature-sensitive medium used for wax temperature control valve that step (2) obtains is at 10～17 ℃ of scope temps, and the stroke value of every degree is basically identical.
5. in accordance with the method for claim 1, it is characterized in that, described interval refers to the discontinuous cut of choosing.
6. in accordance with the method for claim 1, it is characterized in that, the fusing point of at least two selected cuts distributes relatively even within the scope of 8～19 ℃.
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| CN201210440610.4A CN103805276B (en) | 2012-11-07 | 2012-11-07 | A kind of preparation method of temperature-sensitive medium used for wax temperature control valve |
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| CN201210440610.4A CN103805276B (en) | 2012-11-07 | 2012-11-07 | A kind of preparation method of temperature-sensitive medium used for wax temperature control valve |
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| CN103805276B CN103805276B (en) | 2015-09-02 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4130618A (en) * | 1977-12-01 | 1978-12-19 | Gulf Oil Corporation | Ethylene polymer-petroleum wax compositions |
| US5223122A (en) * | 1990-04-18 | 1993-06-29 | Chusei Oil Co., Ltd. | Producing method of fractionated wax products having different molecular weights from solid wax |
| WO1998007787A1 (en) * | 1996-08-23 | 1998-02-26 | Battelle Memorial Institute | Compressible and moldable toy sand composition |
| CN1289800A (en) * | 1999-09-29 | 2001-04-04 | 中国石油化工集团公司 | Wax materials composition for thermosensitive switch and its preparing process |
| CN1351094A (en) * | 2000-10-26 | 2002-05-29 | 中国石油化工股份有限公司 | Wax compositions for thermosensitive switch |
| CN1609162A (en) * | 2003-10-24 | 2005-04-27 | 中国石油化工股份有限公司 | Temerature sensitive medium for wax temperature controlling valve and its prepn process |
| CN1861761A (en) * | 2005-05-12 | 2006-11-15 | 中国石油化工股份有限公司 | Automatically adding concentrated wax medium for valve of motorcycle and preparation process thereof |
-
2012
- 2012-11-07 CN CN201210440610.4A patent/CN103805276B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4130618A (en) * | 1977-12-01 | 1978-12-19 | Gulf Oil Corporation | Ethylene polymer-petroleum wax compositions |
| US5223122A (en) * | 1990-04-18 | 1993-06-29 | Chusei Oil Co., Ltd. | Producing method of fractionated wax products having different molecular weights from solid wax |
| WO1998007787A1 (en) * | 1996-08-23 | 1998-02-26 | Battelle Memorial Institute | Compressible and moldable toy sand composition |
| CN1289800A (en) * | 1999-09-29 | 2001-04-04 | 中国石油化工集团公司 | Wax materials composition for thermosensitive switch and its preparing process |
| CN1351094A (en) * | 2000-10-26 | 2002-05-29 | 中国石油化工股份有限公司 | Wax compositions for thermosensitive switch |
| CN1609162A (en) * | 2003-10-24 | 2005-04-27 | 中国石油化工股份有限公司 | Temerature sensitive medium for wax temperature controlling valve and its prepn process |
| CN1861761A (en) * | 2005-05-12 | 2006-11-15 | 中国石油化工股份有限公司 | Automatically adding concentrated wax medium for valve of motorcycle and preparation process thereof |
Non-Patent Citations (1)
| Title |
|---|
| 史凤霞等: ""温控阀用感温蜡的性能分析"", 《西华大学学报.自然科学版》, vol. 24, no. 5, 30 September 2005 (2005-09-30), pages 63 - 65 * |
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