CN2166291Y

CN2166291Y - Electronic insulation tube

Info

Publication number: CN2166291Y
Application number: CN 93214781
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: 1994-05-25
Anticipated expiration: 2003-05-31

Abstract

The utility model discloses an electronic insulation tube used for conveying materials and connecting in the coal industry, the petrochemical industry and the pharmaceutic industry. Heat insulating materials are filled into an interlayer composed of an outer thimble and an inner thimble, and a heater is used to heat the heat insulating materials. The electric heater is controlled by an electric temperature controlling implement, as a result that the temperature inside the electronic insulation tube is kept consistent to the temperature desired by the materials while flowing at all times, the coagulating phenomenon or vaporizing phenomenon of the materials is prevented, production efficiency is improved, and environmental pollution is prevented. Therefore, the existing steam insulation mode is fundamentally changed by the electronic insulation tube, and the capital investment is saved.

Description

Electronic insulation tube

The utility model relates to pipeline and the insulation connecting tube that is used to carry chemical substance in Coal Chemical Industry, petrochemical industry and the pharmaceuticals industry, and particularly a kind of Electric heating that adopts makes pipeline keep temperature required electronic heat-insulating pipe.

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 pipe fitting, because some material leaks water inlet steam probably in pipeline, phthalic anhydride for example, its fusing point is 131 ℃, and becomes phthalic acid immediately after meeting water vapor, its fusing point is 231 ℃, even this material puts on the vapor pressure of its 0.8MPa and also do not reach fusing point, like this, material will condense and blocking pipeline in pipeline, the lighter influences production, for example, new pipe fitting is pulled down or changed to the pipe fitting that must be blocked, or remove coagulant with burning, could resume production again after catching Lou repair welding, serious meeting causes major accidents such as blast or burning.In addition, because the pressure of steam boiler changes, promptly changed with vapor pressure and change by the temperature of charge in the pipeline 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 pipe more than 160 ℃, and a large amount of naphthalene steam evaporate in the production place, not only wastes material, befouling environment, and be prone to accidents, therefore, need badly improving for the old technology of material in the pipe with steam.

The purpose of this utility model is to provide a kind of electronic heat-insulating pipe, its adopts electric heater that the thermal insulating material that is filled in the pipe sandwich is heated, and by temp controller the temperature of thermal insulating material is controlled at and can prevents preferably on the required temperature value of material that the material in the pipe from condensing; Save huge steam generating equipment simultaneously, and lowered requirement of withstand voltage pipeline.

Above-mentioned purpose of the present utility model realizes by following structure:

A kind of electronic heat-insulating pipe fitting, comprise the pipeline that outer sleeve and inner sleeve (materail tube) are formed with interlayer, its characteristics are: filling heat preserving and insulating material in the interlayer that described outer sleeve and inner sleeve form, in addition, also have an electronic heater to extend into the temp controller control that the heat preserving and insulating material neutralization is installed in control electric heater break-make on the outer sleeve outer surface along the pipe clamp layer with axial direction.Preferably, described electric heater is entirely made with heat sink material, is semi-cylindrical shaped, and extends axially certain-length; Be shaped on two passages axisymmetrically on its peripheral wall, be provided with heating original papers such as electric heating wire in it, the end of passage constitutes and is connected into post; In addition, the remaining part of peripheral wall constitutes the profile of tooth radiating fin.

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 pipe of the present utility model heats the heat preserving and insulating material that is filled in the pipe sandwich owing to having adopted with electric heater, and be controlled on the value that adapts with temperature of charge with the temperature of temp controller with thermal insulating material, fed in the old technology of carrier pipe insulation with steam thereby changed in the past, the material in the carrier pipe that often occurs because temperature is not enough or too high the condensing and the phenomenon generation of blocking pipe or the excessive befouling environment of gas of causing of pressure, can also save simultaneously boiler, save capital cost, reduce requirement of withstand voltage pipeline.

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 pipe of the present utility model;

Fig. 2 is to view along B-B among Fig. 1;

Fig. 3 is the External view of the heater of a kind of form of thermal insulation pipe of the present utility model;

Fig. 4 is the sectional view along A-A line among Fig. 3.

See also Fig. 1,2, electronic heat-insulating pipe of the present utility model is mainly by outer sleeve 1 and inner sleeve 2(materail tube) constitute an interlayer with alternate form, the internal and external casing two ends of alternate interlayer can be provided with flange plate 3 as required so that interconnecting between each thermal insulation pipe; In the utility model, a kind of heat preserving and insulating material 4 is filled in the mezzanine space, then electronic heater 5 is extend in the heat preserving and insulating material 4 from axial direction along alternate interlayer, one electronic temperature control device 6 is installed on the outer surface of outer sleeve 1, and it is connected by lead with electric heater 5 and reaches the purpose of controlling heat preserving and insulating material temperature in the interlayer with energising and outage according to temperature control electronic heater.During use, when the thermal insulating material temperature in the thermal insulation pipe is equal to or less than the yield temperature of material, switch on automatically by electronic temperature control device control electric heater.Temperature is raise and prevent the material blocking pipe that condenses, more than the thermal insulating material temperature is higher than the yield temperature certain value of material such as more than 20 ℃ the time, electronic temperature control device control electric heater is cut off the electricity supply automatically, temperature in the thermal insulation pipe is descended and does not cause temperature in the thermal insulation pipe too high and make that material is vaporized, overflowed, befouling environment.This electronic temperature control device can adopt present widely used temp controller, does not give unnecessary details herein.

More particularly, in the utility model in order fundamentally to change the technology of prior art with steam insulation, reduce requirement simultaneously to the pipeline compressive strength, and adopted the mode that is filled 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 selected conventional heat tracing material, the liquid thermal insulation material that the preferable thermal insulating material in the utility model is made up of paraffin wax and at least a stearate, wherein stearic acid 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, heater 5 can be as common pipe formula in the utility model, abnormity that also can be as shown in Fig. 3,4; As seen from the figure, whole electric heater 5 is semi-cylindrical shaped, and extend axially certain length, whole electric heater body is made with heat sink material, on its peripheral wall, axially be drilled with two ducts 51 symmetrically, wherein can put into heater elements such as electric heating wire, the end in duct is provided with two wiring terminals 52, and the remaining part of peripheral wall promptly constitutes profile of tooth radiating fin 53; Radiating fin 53 areas of this heater 5 are bigger, can be fully the even thermal insulating material in the heating interlayer; In addition, the axial length of heater can be decided according to the length of feeding pipe.

In sum, electronic insulation tube of the present utility model has overcome the defective of existing pipe insulation technology, provides condition for improving production management level, can reduce again capital expenditure, reduce and pollute, and have easy to use, the advantage such as handling safety is reliable.

Claims

1, a kind of electronic heat-insulating pipe

Comprise the pipeline that outer sleeve and inner sleeve are formed with interlayer, it is characterized in that: be filled with heat preserving and insulating material in the interlayer that described outer sleeve and inner sleeve form, in addition, also have an electronic heater to extend in the heat preserving and insulating material and be installed in the temp controller of control electric heater break-make on the outer sleeve outer surface along the pipe clamp layer with axial direction.

2, electronic heat-insulating pipe as claimed in claim 1, it is characterized in that: described thermal 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 pipe as claimed in claim 1 or 2, it is characterized in that: described electric heater itself is made with heat sink material, is semi-cylindrical shaped, makes two ducts on its peripheral wall axisymmetrically, be provided with heater element in it, the mouth end in duct is installed wiring terminal; In addition, the remaining part of peripheral wall is equipped with the profile of tooth radiating fin.