CN2161794Y

CN2161794Y - Electronic insulating valve

Info

Publication number: CN2161794Y
Application number: CN 93214780
Authority: CN
Inventors: 孙玉国; 顾金生
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-05-31
Filing date: 1993-05-31
Publication date: 1994-04-13
Anticipated expiration: 2003-05-31

Abstract

The utility model relates to an electronic insulating valve. The electronic insulating valve comprises a valve core and casing, wherein, the casing is composed of an inner layer and an outer layer to form an interlayer form. The interlayer is filled with heat insulation and preservation materials. A heater is placed in the heat insulation and preservation materials and is controlled by an electric temperature controlling implement. The electric heater is controlled by the electric temperature controlling implement to heat the heat insulation and preservation materials, so the temperature in the electronic insulating valve is accordant to the flowing temperature of the materials, and the phenomenon that the materials coagulate to plug valves or the materials vapor to pollute environment is prevented. The old technology that steam is used to heat valves is fundamentally changed by the electronic insulating valve, and the capital construction cost is saved.

Description

Electronic insulating valve

The utility model relates to used valve on the insulation pipe, heat-preserving equipment, thermal insulating tank car of Coal Chemical Industry, petrochemical industry and medication chemistry, and particularly a kind of Electric heating that adopts makes valve member keep temperature required electronic heat-insulating valve.

At present, in Coal Chemical Industry, petrochemical industry and pharmaceuticals industry,, all be in the pipeline chuck, to pass to superheated vapor in order to make material unimpeded in pipeline, be incubated to materail tube; This technology not only will be purchased huge boiler, build the boiler room, and it is also very high to the requirement of withstand voltage of valve member, because some material is afraid of to leak water inlet steam very much in pipeline, phthalic anhydride for example, its fusing point is 131 ℃, and becomes phthalic acid immediately after meeting water vapor, and its fusing point is 231 ℃, even this material does not reach fusing point to the vapor pressure of its 0.8MPa yet, like this, material just condenses in valve and stops up valve, and the lighter influences production, new valve member is pulled down or changed to the valve member that must be blocked, or remove coagulant with burning, and could resume production again after catching Lou repair welding, severe patient can cause major accidents such as knocking fuel.In addition, because the pressure of steam boiler changes, promptly changed with vapor pressure by the temperature of charge in the valve member of superheated vapor heat tracing, the material that has only needs 100 ℃ of left and right sides holding temperatures just passable, for example: crude naphthalene (about 80 ℃ of its fusing points), the high more gasification of temperature is serious more, when vapor pressure rises to 0.8MPa, naphthalene is heated in valve more than 160 ℃, and a large amount of naphthalene steam evaporate in the production place, not only befouling environment, the waste material, and be prone to accidents, therefore, need badly improving for the old technology of material heating in the valve with steam.

The purpose of this utility model is to provide a kind of electronic heat-insulating valve, described valve housing is made for the interlayer form, filled heat insulating material within it, utilize electric heater to be controlled on the required temperature value of material to its heating and by the temperature of temp controller with thermal insulating material, can prevent preferably that the material that flows through from condensing from valve, save huge steam generating equipment simultaneously, and lowered requirement of withstand voltage valve member.

Above-mentioned purpose of the present utility model realizes in the following way:

A kind of electronic heat-insulating pipe valve, mainly comprise spool and housing, its characteristics are: described housing constitutes the interlayer form by internal layer and skin, one heat preserving and insulating material is filled in the described interlayer, and an electric heater places in the heat preserving and insulating material and by an electronic temperature control device that is installed on the housing outer surface and controls; In addition, a gland is fixed on the bottom opening of described housing.

Preferable: described heat preserving and insulating material is a kind of liquid thermal insulation material, comprise paraffin, with at least a stearate, described stearate is selected from the mixture of calcium stearate, barium stearate, aluminum stearate, dolomol, cadmium stearate, lead stearate and/or zine stearate; Wherein said paraffin and described stearate part by weight are 100:1-150.

Preferable, described electric heater is entirely made with heat sink material, and its bottom is made for circular pipeline, is provided with electricity heating original paper in the pipeline, is provided with a plurality of axial upwardly extending radiating fin circumferentially along tube wall.

Electronic heat-insulating valve of the present utility model is owing to adopted with electric heater being filled in the heat preserving and insulating material heating in the valve body interlayer, and be controlled on the value that adapts with temperature of charge with the temperature of temp controller with thermal insulating material, thereby changed in the past with the old technology of steam to the carrier pipe insulation, the material phenomenon not enough owing to temperature or too high condense blocking pipe or the excessive befouling environment of gas that causes of pressure of valve of preventing from effectively to flow through takes place, can also save simultaneously boiler, save capital cost, reduce requirement of withstand voltage valve body.

Below in conjunction with accompanying drawing structural feature of the present utility model is further described, wherein,

Figure 1 shows that the partial sectional view of thermal insulation valve of the present utility model;

Fig. 2 is the External view of the heater of a kind of form of thermal insulation valve of the present utility model;

Fig. 3 is the heater sectional view among Fig. 2.

See also Fig. 1, the electronic heat-insulating valve mainly comprises spool 1 and housing 2, and housing 2 is fixed on end cap 4 by fastening screw trip bolt 3, is provided with Sealing A therebetween and releases to prevent the material in the housing 2; In the utility model, housing 2 is made of internal layer 201 and outer 202, internal layer 201 is made by stainless steel or cast iron, and form the passage of crossing for material flow, outer 202 by steel pipe or steel formability, also available forging type one-step casting shaping interlayer, like this, between internal layer 201 and outer 202, promptly constitute a mezzanine space, a kind of heat preserving and insulating material 5 is filled in this interlayer, be provided with an electric heater 6 in the thermal insulating material of interlayer bottom, this electric heater 6 is by electronic temperature control device 7 controls that are installed on housing 2 outer surfaces; In addition, the opening of interlayer bottom is sealed by a gland 8, overflows for preventing thermal insulating material wherein, also is provided with a Sealing 9 between gland 8 and opening.During use, by 5 heating of 7 pairs of thermal insulating materials of electric heater, when the material temperature in the clamp is higher than the required temperature of Flow of Goods and Materials more than 20 ℃ the time, temp controller 7 is promptly controlled electric heater and is cut off the electricity supply automatically, and stop heating, too high and make that material is vaporized, overflowed, befouling environment with regard to not causing temperature in the valve like this; When the material temperature in the interlayer is equal to or less than the yield temperature of material, by electronic temperature control device control electric heater automatically energising make that temperature raises in the valve, and prevent the material obstruction valve member that condenses.In the utility model, the electronic temperature control device can adopt present widely used temp controller, holds and does not give unnecessary details.

Especially, in the utility model in order fundamentally to change the technology of prior art with steam insulation, reduce requirement simultaneously to the valve member compressive strength, and adopted the mode that charges into the heat-insulation and heat-preservation material at interlayer, this material can keep required temperature after with heater heats within a certain period of time; This material can be the heat tracing material of multiple routine, the liquid thermal insulation material of forming by paraffin and at least a stearate in the present embodiment, wherein stearate is selected from the mixture of calcium stearate, barium stearate, aluminum stearate, dolomol, cadmium stearate, lead stearate and/or zine stearate; In addition, paraffin wax and stearate part by weight can be 100:1-150.

In addition, in the utility model, electric heater 6 may be made in the disc shown in Fig. 2 and 3, and its bottom is the heat dissipating pipe 601 of circumflexion, wherein is provided with heating original papers such as electric heating wire; For making radiating effect obvious, make a plurality of axial upwardly extending radiating fin 602 along the circumference of tube wall, the length that radiating fin extends can be by the degree of depth decision of valve housing.Whole heater is made by heat sink material.

Certainly, the electric heater in the utility model also can have other distortion, holds and does not give unnecessary details.

In sum, electronic heat-insulating valve of the present utility model has overcome the defective of existing steam insulation technology, is to improve production management level condition is provided, and has reduced again to build investment, reduced pollution, and is safe and reliable.

Claims

1, a kind of electronic heat-insulating pipe valve, comprise spool and housing, its characteristics are: described housing has the interlayer of internal layer and outer component, one heat preserving and insulating material is filled in the described interlayer, and an electric heater places in the heat preserving and insulating material and the control of the electronic temperature control device of a control heater break-make is installed on the housing outer surface; In addition, a gland is fixed; On the bottom opening of described housing.

2, electronic heat-insulating valve as claimed in claim 1, it is characterized in that: described heat preserving and insulating material is: a kind of liquid thermal insulation material, comprise paraffin, with at least a stearate, described stearate is selected from the mixture of calcium stearate, barium stearate, aluminum stearate, dolomol, cadmium stearate, lead stearate and/or zine stearate; Wherein said paraffin and described stearate part by weight are 100:1-150.

3, electronic heat-insulating valve as claimed in claim 2, it is characterized in that: described electric heater itself is made with heat sink material, its bottom is made for circular duct, is provided with electricity heating original paper in the duct, is provided with a plurality of axial upwardly extending radiating fin circumferentially along cell walls.