CN101403529A - Fast air heater - Google Patents
Fast air heater Download PDFInfo
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- CN101403529A CN101403529A CNA2008102232101A CN200810223210A CN101403529A CN 101403529 A CN101403529 A CN 101403529A CN A2008102232101 A CNA2008102232101 A CN A2008102232101A CN 200810223210 A CN200810223210 A CN 200810223210A CN 101403529 A CN101403529 A CN 101403529A
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Abstract
The invention discloses a quick air heater, mechanical parts thereof adopt waterproof and high-temperature resistant materials, and a core heating part adopts electrothermal film heating pipes, thus achieving ultrahigh electrothermal transfer efficiency which is over 95 percent and ultra-quick response; the electrothermal film heating pipes are distributed in the form of an isoperimetric polygon, thus ensuring even air heating; the quick air heater takes the shape of a cylinder with two thinner ends and a thicker middle part integrally and consists of three parts which are an expanding section, a heating section and a shrinking section, the expanding section and the shrinking section are approximately completely symmetric relative to the midline of the heating section in structure; the design that the whole quick air heater is divided into three sections takes consideration that the electrothermal film heating pipes and adapter sleeves thereof need to be placed in the heating section and both parts occupy certain cross section areas. In order to reduce pressure reduction loss and optimally keep flow speed unchanged in a process that airflow passes through the heater, the core heating part of the heating section adopts the ultra-thin electrothermal film heating pipes, the axial direction of which is the same as the airflow direction, and the effective cross section area of high wet air that passes through the heating section is ensured to be approximately the same as the cross section area of the original pipe.
Description
One, technical field
The present invention relates to a kind of fast air heater, this heater is applicable to wide air humidity scope (5%RH～100%RH), and the pressure loss is less in heating process.
Two, background technology
Warm, wet, pressure integrated measurement verification device provides uniform temperature, humidity environment under the certain pressure specially.Evenly temperature, pressure ring border are obtained through the conversion of the two pressure of two temperature principle by the saturated with moisture of preceding stage arrangement generation for these.Under the prerequisite that guarantees temperature, wet field uniformity, gaseous state rises to a kind of conventional demand that high temperature is certificate test fast from low temperature.Thereby the saturated with moisture that preceding stage arrangement need be produced is under the less situation of the pressure loss, through suitably rectification, evenly heat, be rapidly heated.The rapid mode of heating of gas is varied, but generally only at normal air, or do not consider air high humility situation do not consider being heated evenly property or droop loss bigger.
(application number is: 93207418.9) introduced a kind of Electrothermal fan, its frame for movement is seen Fig. 1 to Chinese patent.This Electrothermal fan has a shell, the air outlet 22 that electric heating piece is arranged in shell one end is provided with, be provided with motor-operated multiblade fan in the shell, the axial and electric heating piece of multiblade fan is 90 ° and intersects, and the wind that the multiblade fan rotation produces is sent from air outlet via electric heating piece and promptly formed hot blast.This Electrothermal fan adds the air heater of the mode widespread usage of hot-air in routine: be about to air-flow and vertically blow to heater block.This mode has improved heat exchange efficiency to a certain extent, and structure is also simpler.But its shortcoming is also quite obvious: first: air-flow vertically blows to heater block, gets rid of via air outlet then, and its pressure loss is obviously excessive; Second: the discharge gas flow temperature is inhomogeneous; The 3rd, its heater block is the traditional heating parts, and it is not high that electric heating changes the thermal efficiency, and thermal inertia is bigger.
(application number is Chinese patent: 200710056905.0) introduced a kind of air heater, suit is by pottery or metal inner core 4 in its cylindrical outer casing 2, load many cavitys foam ceramic material 5 between inner core 4 and the heating element heater 6 in it, heating element heater is heating wire, electrical bar, carborunbum tube etc.This heater advantage is a homogeneous heating, and surface area is big.Yet shortcoming and defect also is tangible.The first, heating element heater adopts traditional materials such as heating wire, electrical bar.This material is easily aging, easily oxidation, electric conversion efficiency are low, and it is slow to heat up, and is unfavorable for being rapidly heated.Second: though many cavitys foam ceramic material has increased porosity than the regular-type foam material, droop loss is obvious still very big.The 3rd: the general water imbibition of foamed material is more serious, can't satisfy high humidity gas heating requirement.
Three, summary of the invention
A kind of fast air heater of the present invention, its objective is for prior art in the deficiency aspect firing rate, efficient and the resistance to compression damage, at the wide humidity range (air of 5%RH～100%RH), solve its Fast Heating problem, and guarantee that air is heated evenly, crushing is less when flowing through heater.
A kind of fast air heater of the present invention, its mechanical part generally adopts waterproof, exotic material, and core heating part adopts electrothermal film heating pipe, and electric conversion efficiency is high, and more than 95%, and response is very rapid.The distribution of electric heating membrane pipe such as is at polygon, guarantees air is evenly heated.
It is thin slightly, middle thick slightly cylindric that this fast air heater is two ends generally, and it is made of flared section, bringing-up section, closing in section three parts, and structurally the flared section and the section that closes up are about bringing-up section center line symmetry almost completely.It mainly is to consider that bringing-up section need lay electric heating membrane pipe and adapter sleeve thereof that integral body is divided into three sections, and the both can occupy certain cross-sectional area.For making air-flow in the process of heater of flowing through, reduce droop loss, and flow velocity is remained unchanged, the core heating part of bringing-up section adopts ultra-thin electric heating membrane pipe, it is axially identical with air-flow direction, and the effective cross section when guaranteeing that highly humid air is flowed through bringing-up section is amassed roughly suitable with former pipe cross-sectional area.This crust of the device material therefor needs ability-60 ℃～500 ℃, and has and do not absorb water, be easy to machining, characteristic such as sturdy and durable.The bringing-up section internal lining pipe needs ability-60 ℃～700 ℃, do not absorb water and has good insulation performance performance and heat conductivility.Flared section, the section that closes up internal lining pipe need ability-60 ℃ ~ 250 ℃, do not absorb water, be easy to machining, and have the good insulation performance performance.Need to adopt good heat-insulation and heat-preservation material between internal lining pipe and the shell, and need 700 ℃ of heatproofs, the normal temperature thermal conductivity factor is less than 0.05W/MK.Utilize sealing ring, flange seal to connect between three sections of the flared section, bringing-up section, closing in section.The heater inside and outside differential pressure is ± during 130KPa, and flange connections air slip≤1 * 10
-5Cm
3/ s.
Wherein, described crust of the device can adopt low temperature resistant iron pipe, steel pipe, copper pipe etc.Described bringing-up section internal lining pipe can adopt earthenware etc.Flared section, the section that closes up internal lining pipe can adopt four fluorine tube etc.The material of insulating can adopt ceramic fiber paper etc.Sealing ring can adopt O type tetrafluoro circle etc., flange can adopt W.N flange, slip-on welding flange, and sealing surface can adopt convex surface or plane.
Whole flared section is followed successively by from inside to outside, and sensor fixed bar, sensor stand, mozzle, air screens, internal lining pipe, insulating, shell etc. partly constitute.The sensor fixed bar flows into an end laying temperature sensor at air, and the other end is fixed on the sensor stand.Sensor stand can hold a plurality of sensor fixed bars along fixing side by side so that temperature, the detected temperatures uniformity of monitoring diverse location perpendicular to airflow direction.The heavy sky of the adjacent screw thread of sensor stand is welded on the inboard of mozzle.The length that the mozzle air flows into an end surpasses the horn-like shell that internal lining pipe almost contacts flared section, and the mozzle air flows out an end fixed air screens.At flared section sensor fixed bar, sensor stand, mozzle, air screens is one.Material that internal lining pipe adopts need possess three performances.The one insulation, the danger that the alternating current of 220v produces when avoiding accident.Its two, fixed diversion pipe.Internal lining pipe is easy to machining, flows into a side at its gas and designs several screw-threaded counterbore, with fixed diversion pipe.Its three, heat insulation, need have certain heat-proof quality.Consider safety, the energy saving of heater, insulating must adopt the heat-insulation and heat-preservation material of high temperature resistant good grade, and hydrophobicity is stronger, must be exposed to airborne part to material and smears the high temperature marine glue if having water imbibition.Through hole of flared section middle part design, transfer platform of welding on this hole, the supporting use of this transfer platform and seal socket.The power line of the power line of temperature sensor, holding wire, electrothermal film heating pipe is introduced/is drawn by seal socket.The heater inside and outside differential pressure is ± during 130KPa, and transfer platform and seal socket integrated air slip≤1 * 10
-5Cm
3/ s.
Bringing-up section partly is made of electric heating membrane pipe, rosette, internal lining pipe, insulating, shell etc. from inside to outside.Rosette processes 3n (n-1)+1 hole by the mode of line cutting, and n is a positive integer.The distribution scenario in hole is: hole, the positive center of disk is a ground floor, around the centre bore second layer 6 holes is arranged, and the 3rd layer has 12 holes, n layers that the individual hole of 6 (n-1) is arranged.K (the individual hole of layer 6 (k-1) of 2≤k≤n) form round circle center line connecting be that the center of circle and the centre bore of first-class hexagon and this hexagon inscribed circle forms the round center of circle identical).(any 1 through hole and two adjacent holes of m+1 layer of the layer of 1≤M≤n-1), three holes form the circle center line connecting of justifying and are equilateral triangle substantially M separately.Utilize the metal rib to link to each other between through hole and the through hole, redundance all excises.Some through holes are designed in the internal lining pipe middle part, and two rosettes are fixed on the internal lining pipe inwall by hook-shaped fixed bar (will collude and insert in the through hole).Internal lining pipe plays the insulation and the effect of fixing metal disk on the one hand, rosette and shell are separated and is fixed on its inwall.The internal lining pipe heat-conducting effect is fabulous on the other hand, and its inner wall temperature is near rosette, and whole like this internal lining pipe is inner can to form approximate uniform temperature field, helps temperature control.Some gap are respectively left at the internal lining pipe two ends, in the gap position fixed leg is welded on the shell, thereby internal lining pipe is fixed.Consider safety, the energy saving of heater, insulating must adopt the heat-insulation and heat-preservation material of high temperature resistant good grade, and hydrophobicity is stronger, must be exposed to airborne part to material and smears the high temperature marine glue if having water imbibition.
After the section that closes up was suitably shunk pipe diameter, gas flow through from internal lining pipe.Consider that gas is flowed through and further mix in the internal lining pipe process that temperature can be more even, thereby flow into a side at the section gas that closes up and screens is set, flows out a side mounting temperature sensor and carry out the temperature feedback.Whole closing in section is followed successively by from inside to outside, and sensor fixed bar, sensor stand, mozzle, air screens, internal lining pipe, insulating, shell etc. partly constitute.The sensor fixed bar flows out an end laying temperature sensor at air, and the other end is fixed on the sensor stand.Sensor stand can hold a plurality of sensor fixed bars along fixing side by side so that temperature, the detected temperatures uniformity of monitoring diverse location perpendicular to airflow direction.The heavy sky of the adjacent screw thread of sensor stand is welded on the inboard of mozzle.The length that the mozzle air flows out an end surpasses the horn-like shell that internal lining pipe almost contacts the section that closes up.At the section sensor fixed bar that closes up, sensor stand, mozzle is one, and the three is what to separate with the air screens.Material that internal lining pipe adopts need possess three performances.The one insulation, the danger that the alternating current of 220v produces when avoiding accident.Its two, fixed air screens, mozzle.Internal lining pipe is easy to machining, flows into a side at its gas and designs some screw-threaded counterbore, with the fixed air screens; Flow out a side at its gas and design some screw-threaded counterbore, with fixed diversion pipe.Its three, heat insulation, need have certain heat-proof quality.Consider safety, the energy saving of heater, insulating must adopt the heat-insulation and heat-preservation material of high temperature resistant good grade, and hydrophobicity is stronger, must be exposed to airborne part to material and smears the high temperature marine glue if having water imbibition.Through hole of the section that closes up middle part design, transfer platform of welding on this hole, the supporting use of this transfer platform and seal socket.The power line of the power line of temperature sensor, holding wire, electrothermal film heating pipe is introduced/is drawn by seal socket.The heater inside and outside differential pressure is ± during 130KPa, and transfer platform and seal socket integrated air slip≤1 * 10
-5Cm
3/ s.
Wherein, the shell of this fast air heater adopts low temperature resistant metal tube.
Wherein, the internal lining pipe of this fast air heater bringing-up section adopts earthenware.
Wherein, the internal lining pipe of this fast air heater flared section and the section that closes up adopts four fluorine tube.
Wherein, this fast air heater insulating adopts ceramic fiber paper, and it is exposed to airborne part and smears the high temperature marine glue.
Wherein, the sealing and connecting device of this fast air heater adopts sealing ring, and sealing surface is a convex surface.
Wherein, the sealing and connecting device of this fast air heater adopts sealing ring, and sealing surface is the plane.
Wherein, the sealing circle adopts O type tetrafluoro circle.
Wherein, the sealing and connecting device of this fast air heater adopts W.N flange.
Wherein, the sealing and connecting device of this fast air heater adopts slip-on welding flange.
A kind of fast air heater of the present invention, its characteristics and superiority are:
1. core heating part adopts electric heating membrane pipe.Electric heating membrane pipe is energy-efficient: heat exchange area is big, and the electric conversion efficiency height reaches more than 95%; Firing rate is fast, and temperature rise is rapid, reaches thermal balance in one minute; Be easy to temperature control: heat up synchronously, thermal inertia is little, thermal field is even, is easy to accurate temperature controlling.
2. heater adopts 3 stage design, air in the flared section porch, the valid circulation area in bringing-up section, closing in section exit is roughly suitable, air-flow velocity is steady, heating tube is axially identical with airflow direction, droop loss is less.
3. thermal field is even.The core heating part of bringing-up section is made up of 3n (n-1)+1 electric heating membrane pipe.An electric heating membrane pipe is positioned at positive center, peripheral several layers electric heating membrane pipe is around hexagon distributions such as central tube are, (any 1 through hole and two adjacent holes of m+1 layer of the layer of 1≤m≤n-1), three holes form the circle center line connecting of justifying and are equilateral triangle substantially m separately.Electric heating membrane pipe is fixed on the inside of internal lining pipe by rosette, and selected rosette, internal lining pipe material all are extraordinary heat carriers, and inner being close to of whole like this internal lining pipe forms a uniform temperature field.
4. the anti-high humidity ability of heater is stronger.Each parts of whole heater are selected nonabsorbent material for use as far as possible, for having absorptive material it are all smeared the high temperature marine glue in all direct ingress of air positions.Thereby all can heat at the air of humidity range at 5%RH～95%RH.
5. the heater air-tightness is good, can carry out Fast Heating to the gas of 300Pa ~ 130000Pa.Utilize sealing ring, flange seal to connect between three sections; Flared section, the section that closes up are equipped with seal socket with sensor signal lines, and power line is drawn/introduced, good air-tightness when above-mentioned measure guarantees that low-pressure air carried out Fast Heating.
Four, description of drawings
Fig. 1 is the structural representation of a kind of modified Electrothermal fan of background technology.
Fig. 2 is a kind of air heater structural representation of background technology.
Fig. 3 is a kind of air heater axial, cross-sectional view of background technology.
Fig. 4 is the structural representation of specific embodiment of the invention air heater.
Fig. 5 is the signal of specific embodiment of the invention air heater bringing-up section cross section.
Fig. 6 is the signal of specific embodiment of the invention airflow direction.
Fig. 7 is the signal of specific embodiment of the invention earthenware.
Fig. 8 is the signal of specific embodiment of the invention four fluorine tube.
Fig. 9 is the signal of specific embodiment of the invention copper dish.
Figure 10 is a specific embodiment of the invention sensor stand schematic diagram.
Number in the figure and symbol description are as follows:
1-air inlet pipe 2-cylindrical outer casing 3-insulation material
4-metal inner core 5-porous foam ceramic material 6-electrical heating elements
7-temperature controller 8-escape pipe 9-external wire
10-sensor 11-sensor fixed bar 12-sensor stand
13-screens 14-mozzle 15-four fluorine tube
16-ceramic fiber layer 17-steel pipe 18-transfer platform
19-seal socket 20-high temperature marine glue, the 21-electric heating membrane pipe
22-earthenware 23-copper dish, the 24-airflow direction
25-multiblade fan 26-electric heating piece 27-safety breaker device
28-air outlet 29-blade 30-ring
31-temperature detect switch (TDS) 32 is the through hole of the gap 33 fixed copper dishes of earthenware fixedly
The counterbore 35-of 34-fixed diversion pipe installs the through hole of the through hole 36-installation electric heating membrane pipe of transfer platform
37-copper muscle 38-copper ring 39-through hole
40-flange 1 41 flanges 2 42 bronze medal dishes
Five, the specific embodiment:
With reference to Fig. 4, present embodiment is wide humidity range fast air heater.Left-hand broken line is flared section with a left side, and the right side dotted line is the section that closes up with the right side, is bringing-up section in the middle of two dotted lines, air flow such as Fig. 6.Utilize sealing ring, flange 41 (specification is DN125-PN10 RF (serial II) GB/T9119-2000) to be tightly connected between three sections of the flared section, bringing-up section, closing in section, the heater inside and outside differential pressure is ± during 130KPa, flange 41 junction air slip≤1 * 10
-6Cm
3/ s.The used steel pipe of this crust of the device is to contain the above low temperature resistant not crisp nickel steel pipe of Ni3.5%.The bringing-up section internal lining pipe adopts earthenware 15, and flared section, the section that closes up internal lining pipe adopt anti-250 ℃ of high-quality polytetrafluoroethylmaterial materials (hereinafter to be referred as four fluorine tube) 15.Insulating adopts ceramic fiber paper 16.Rosette adopts copper dish 23.Seal socket adopts the cylindrical connector of anti-environment the 19, heatproof-60 ℃～260 ℃, and pressure reduction is ± during 130KPa, air slip＜1 * 10
-5Cm
3/ s.
Whole flared section is followed successively by from inside to outside, and as shown in Figure 8, sensor fixes 11, sensor stand 12, mozzle 14, air screens 13, four fluorine tube 15, ceramic fibre ply of paper 16, round steel pipe 17 etc. partly constitute.Sensor fixed bar 11 flows into an end laying temperature sensor at air, and the other end is fixed on the sensor stand.Sensor stand 12 can hold a plurality of sensor fixed bars 11 along fixing side by side so that temperature, the detected temperatures uniformity of monitoring diverse location perpendicular to airflow direction.Sensor stand 12 adjacent screw threads heavy empty 34 are welded on the inboard of mozzle 14.The length that the mozzle air flows into an end surpasses the horn-like shell that four fluorine tube 15 almost contacts the section that closes up, and mozzle 14 air flow out an end fixed air screens 13.At flared section sensor fixed bar 11, sensor stand 12, mozzle 14, air screens 13 are one.Liner four fluorine tube 15 mainly contains three effects.The one insulation, the danger that the alternating current of 220v produces when avoiding accident.Its two, fixed gas mozzle 14.Four fluorine tube is easy to machining, flows into four screw-threaded counterbore 34 of side design with fixed diversion pipe at its gas.Its three, heat insulation, four fluorine tube 15 has certain heat-proof quality.Ceramic fiber paper 16 has extraordinary high temperature insulating performance, is a kind of widely used heat-insulation and heat-preservation material, at the thick ceramic fiber paper 16 of the outer wall winding 1cm of four fluorine tube, to give full play to the effect of its heat-insulation and heat-preservation.But ceramic fiber paper has the water imbibition defective, thereby need be coated with high temperature insulating insulative water-proof glue 20 in both sides.High-temp glue 20 has solved the water imbibition problem of ceramic fiber paper on the one hand, fills up the space on the other hand, and gas can only be flow through in arterial highway----four fluorine tube 15.Through hole 34 of flared section middle part design, transfer platform of welding on this hole, this transfer platform 18 and seal socket 19 supporting uses, seal socket 19 heatproofs-60 ℃～260 ℃, pressure reduction is ± during 130KPa, air slip＜1 * 10
-5Cm
3/ s.The power line of the power line of temperature sensor 10, holding wire, electrothermal film heating pipe 21 is introduced/is drawn by seal socket.
Bringing-up section partly is made of electrothermal film heating pipe 21, copper dish 23, earthenware 22, ceramic fiber layer 16, steel pipe 17 etc. from inside to outside.Copper dish 23 processes 7 holes 36 (referring to Fig. 9) by the mode of line cutting, the distribution scenario in hole is: hole, the positive center of copper dish, around centre bore 6 holes are arranged, it is first-class hexagon (center of circle of this hexagon inscribed circle with centre bore form the round center of circle identical) that these 6 holes form round circle center line connecting, and the circle center line connecting that any two adjacent holes in 6 holes and centre bore form circle separately is equilateral triangle substantially.Utilize copper muscle 37 to link to each other between through hole and the through hole, redundance all excises.Respectively there are 33, two copper dishes of 4 through holes to be fixed on the earthenware inwall apart from 50cm place, earthenware two ends by hook-shaped fixed bar (will collude and insert in the through hole).Earthenware 22 plays the effect of insulation and fixed copper dish 23 on the one hand, with copper dish 23 with steel pipe 17 separates and the copper dish is fixed within it.Earthenware 22 heat-conducting effect are fabulous on the other hand, and inner wall temperature is near copper dish 23, and whole like this earthenware 22 inner meetings form approximate uniform temperature field, help temperature control.4 gap 32 are respectively left at the earthenware two ends, in gap 32 positions fixed leg are welded on the steel pipe, thus earthenware 22 is fixing.Ceramic fiber paper 16 is heat-insulation and heat-preservation materials of good grade, twines the thick ceramic fiber paper of 1cm on the outer wall of earthenware, to bring into play its performance.But ceramic fiber paper has the water imbibition defective, thereby need be coated with high temperature insulating insulative water-proof glue 20 in both sides.High-temp glue 20 has solved the water imbibition problem of ceramic fiber paper 16 on the one hand, fills up the space on the other hand, and gas can only be flow through in arterial highway----earthenware 22.
After the section that closes up was suitably shunk pipe diameter, gas flow through from liner four fluorine tube 15.Consider that gas is flowed through and further mix in the four fluorine tube process that temperature can be more even, thereby flow into a side at the section gas that closes up and screens 13 is set, flows out a side mounting temperature sensor 10 and carry out the temperature feedback.Whole closing in section is followed successively by from inside to outside, and sensor fixed bar 11, sensor stand 12, mozzle 14, air screens 13, four fluorine tube 15, ceramic fibre ply of paper 16, steel pipe 17 etc. partly constitute.The sensor fixed bar flows out an end laying temperature sensor 10 at air, and the other end is fixed on the sensor stand 12.Sensor stand can hold a plurality of sensor fixed bars 11 along fixing side by side so that temperature, the detected temperatures uniformity of monitoring diverse location perpendicular to airflow direction.Sensor stand 12 adjacent screw threads heavy empty 34 are welded on the inboard of mozzle 14.The length that mozzle 14 air flow out an end surpasses the horn-like shell (see figure 4) that four fluorine tube almost contacts the section that closes up.At the section sensor fixed bar 11 that closes up, sensor stand 12, mozzle 14 are one, and the three is what to separate with air screens 13.Liner four fluorine tube 15 mainly contains three effects.The one insulation, the danger that the alternating current of 220v produces when avoiding accident.Its two, fixed air screens 13, mozzle 14.Four fluorine tube is easy to machining, flows into 4 screw-threaded counterbore 34 of side design at its gas, with the fixed air screens; Flow out 4 screw-threaded counterbore 34 of side design at its gas, with fixed diversion pipe 14.Its three, heat insulation, four fluorine tube 15 has certain heat-proof quality.Ceramic fiber paper 16 is heat-insulation and heat-preservation materials of good grade, twines the thick ceramic fiber paper 16 of 1cm on the outer wall of four fluorine tube 15, to bring into play its performance.But ceramic fiber paper 16 has the water imbibition defective, thereby need be coated with high temperature insulating insulative water-proof glue 20 in both sides.High-temp glue 20 has solved the water imbibition problem of ceramic fiber paper 16 on the one hand, fills up the space on the other hand, and gas can only be flow through by----four fluorine tube interior 15 from the arterial highway.Through hole 35 of flared section middle part design, transfer platform 18 of welding on this hole, this transfer platform 18 and seal socket 19 supporting uses, seal socket 18 heatproofs-60 ℃～260 ℃, pressure reduction is ± during 130KPa, air slip＜1 * 10
-5Cm
3/ s.The power line of the power line of temperature sensor 10, holding wire, electrothermal film heating pipe 21 is introduced/is drawn by seal socket.By the temperature sensor 10 of heater rear and front end, can realize closed-loop control to the air Fast Heating.
Claims (10)
1, a kind of fast air heater, it is characterized in that: this fast air heater is cylindric that two ends are thin slightly, the centre is thick slightly generally, it is made of flared section, bringing-up section, closing in section three parts, and structurally the flared section and the section that closes up are almost completely symmetrical about the bringing-up section center line; Utilize sealing ring, flange seal to connect between three sections of the flared section, bringing-up section, closing in section; This crust of the device material therefor needs ability-60 ℃～500 ℃, and has and do not absorb water, be easy to machining, characteristic such as sturdy and durable, and the bringing-up section internal lining pipe needs ability-60 ℃～700 ℃, do not absorb water and has good insulation performance performance and heat conductivility; Flared section, the section that closes up internal lining pipe need ability-60 ℃ ~ 250 ℃, do not absorb water, be easy to machining, and have the good insulation performance performance; Insulating between internal lining pipe and the shell adopts good partiting thermal insulation material, and this partiting thermal insulation material has high temperature resistant 700 ℃, and the normal temperature thermal conductivity factor is less than the characteristic of 0.05W/MK; The heater inside and outside differential pressure is ± during 130KPa, and flange connections air slip≤1 * 10
-5Cm
3/ s;
Whole flared section is made of sensor fixed bar, sensor stand, mozzle, air screens, internal lining pipe, insulating, shell from inside to outside successively; The sensor fixed bar flows into an end laying temperature sensor at air, and the other end is fixed on the sensor stand; Sensor stand holds a predetermined sensor fixed bar along fixing side by side perpendicular to airflow direction; The heavy sky of the adjacent screw thread of sensor stand is welded on the inboard of mozzle; The length that the mozzle air flows into an end surpasses the horn-like shell that internal lining pipe almost contacts flared section, and the mozzle air flows out an end fixed air screens; At flared section sensor fixed bar, sensor stand, mozzle, air screens is one; The internal lining pipe fixed diversion pipe flows into the predetermined screw-threaded counterbore of side design at its gas, with fixed diversion pipe; Through hole of flared section middle part design, transfer platform of welding on this hole, the supporting use of this transfer platform and seal socket; The power line of the power line of temperature sensor, holding wire, electrothermal film heating pipe is introduced/is drawn by seal socket; The heater inside and outside differential pressure is ± during 130KPa, and transfer platform and seal socket integrated air slip≤1 * 10
-5Cm
3/ s;
Bringing-up section is made of electric heating membrane pipe, rosette, internal lining pipe, insulating, shell from inside to outside; Rosette processes 3n (n-1)+1 hole by the mode of line cutting, and n is a positive integer; The distribution scenario in hole is: hole, the positive center of disk is a ground floor, around the centre bore second layer 6 holes is arranged, and the 3rd layer has 12 holes, n layers that the individual hole of 6 (n-1) is arranged; (the individual hole of layer 6 (k-1) of 2≤k≤n) forms round circle center line connecting, and to be that the center of circle and the centre bore of first-class hexagon and this hexagon inscribed circle forms the round center of circle identical for k; (any 1 through hole and two adjacent holes of m+1 layer of the layer of 1≤M≤n-1), three holes form the circle center line connecting of justifying and are equilateral triangle M separately; Utilize the metal rib to link to each other between through hole and the through hole, redundance all excises; The predetermined through hole of internal lining pipe middle part design, two copper dishes are fixed on the internal lining pipe inwall by hook-shaped fixed bar; Internal lining pipe separates rosette and display pipe and is fixed on the display pipe inwall; Gap is respectively left at the internal lining pipe two ends, in the gap position fixed leg is welded on the shell, thereby internal lining pipe is fixed;
After the section that closes up was suitably shunk pipe diameter, gas flow through from internal lining pipe; Flowing into a side at the section gas that closes up is provided with screens, flows out a side mounting temperature sensor and carry out the temperature feedback; Whole closing in section is made of sensor fixed bar, sensor stand, mozzle, air screens, internal lining pipe, insulating, shell from inside to outside successively; The sensor fixed bar flows out an end laying temperature sensor at air, and the other end is fixed on the sensor stand; Sensor stand holds a predetermined sensor fixed bar along fixing side by side perpendicular to airflow direction; The heavy sky of the adjacent screw thread of sensor stand is welded on the inboard of mozzle; The length that the mozzle air flows out an end surpasses the horn-like shell that internal lining pipe almost contacts the section that closes up; At the section sensor fixed bar that closes up, sensor stand, mozzle is one, and the three is what to separate with the air screens; Internal lining pipe fixed air screens, mozzle; Internal lining pipe is easy to machining, flows into the predetermined screw-threaded counterbore of side design at its gas, with the fixed air screens; Flowing out side design at its gas has screw-threaded counterbore, with fixed diversion pipe; Through hole of the section that closes up middle part design, transfer platform of welding on this hole, the supporting use of this transfer platform and seal socket; The power line of the power line of temperature sensor, holding wire, electrothermal film heating pipe is introduced/is drawn by seal socket; The heater inside and outside differential pressure is ± during 130KPa, and transfer platform and seal socket integrated air slip≤1 * 10
-5Cm
3/ s.
2, fast air heater as claimed in claim 1 is characterized in that: the shell of this fast air heater adopts low temperature resistant metal tube.
3, fast air heater as claimed in claim 1 is characterized in that: the internal lining pipe of this fast air heater bringing-up section adopts earthenware.
4, fast air heater as claimed in claim 1 is characterized in that: the internal lining pipe of this fast air heater flared section and the section that closes up adopts four fluorine tube.
5, fast air heater as claimed in claim 1 is characterized in that: this fast air heater insulating adopts ceramic fiber paper, and it is exposed to airborne part and smears the high temperature marine glue.
6, fast air heater as claimed in claim 1 is characterized in that: the sealing and connecting device of this fast air heater adopts sealing ring, and sealing surface is a convex surface.
7, fast air heater as claimed in claim 1 is characterized in that: the sealing and connecting device of this fast air heater adopts sealing ring, and sealing surface is the plane.
8, as claim 7 or 8 described fast air heaters, it is characterized in that: the sealing circle adopts O type tetrafluoro circle.
9, fast air heater as claimed in claim 1 is characterized in that: the sealing and connecting device of this fast air heater adopts W.N flange.
10, fast air heater as claimed in claim 1 is characterized in that: the sealing and connecting device of this fast air heater adopts slip-on welding flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102232101A CN101403529B (en) | 2008-09-27 | 2008-09-27 | Fast air heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102232101A CN101403529B (en) | 2008-09-27 | 2008-09-27 | Fast air heater |
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| Publication Number | Publication Date |
|---|---|
| CN101403529A true CN101403529A (en) | 2009-04-08 |
| CN101403529B CN101403529B (en) | 2011-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102232101A Expired - Fee Related CN101403529B (en) | 2008-09-27 | 2008-09-27 | Fast air heater |
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| Country | Link |
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| CN (1) | CN101403529B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102331088A (en) * | 2011-10-21 | 2012-01-25 | 无锡博睿奥克电气有限公司 | Flow equalization device for air electric heater |
| CN105485902A (en) * | 2016-01-18 | 2016-04-13 | 宁波卡帝亚电器有限公司 | Self-driven fan barrel fan heater |
| CN107314383A (en) * | 2017-08-14 | 2017-11-03 | 维珂瑞（北京）环境科技有限公司 | A kind of rotating pocket formula regenerative oxidation device of electric radiant tube heating |
| CN107560171A (en) * | 2017-10-13 | 2018-01-09 | 江苏众众热能科技有限公司 | Explosion-proof steam air heater |
| CN111457585A (en) * | 2020-03-27 | 2020-07-28 | 中国航天空气动力技术研究院 | High-temperature pure air heater |
| CN111720993A (en) * | 2020-06-12 | 2020-09-29 | 广西桂仪科技有限公司 | Circular tube water heating device |
| CN112503763A (en) * | 2020-11-04 | 2021-03-16 | 北京航空航天大学 | Small-flow air ultrahigh-temperature electric heating device |
-
2008
- 2008-09-27 CN CN2008102232101A patent/CN101403529B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102331088A (en) * | 2011-10-21 | 2012-01-25 | 无锡博睿奥克电气有限公司 | Flow equalization device for air electric heater |
| CN105485902A (en) * | 2016-01-18 | 2016-04-13 | 宁波卡帝亚电器有限公司 | Self-driven fan barrel fan heater |
| CN105485902B (en) * | 2016-01-18 | 2018-08-07 | 宁波卡帝亚电器有限公司 | It is a kind of to fan cylinder warm-air drier from driving |
| CN107314383A (en) * | 2017-08-14 | 2017-11-03 | 维珂瑞（北京）环境科技有限公司 | A kind of rotating pocket formula regenerative oxidation device of electric radiant tube heating |
| CN107560171A (en) * | 2017-10-13 | 2018-01-09 | 江苏众众热能科技有限公司 | Explosion-proof steam air heater |
| CN111457585A (en) * | 2020-03-27 | 2020-07-28 | 中国航天空气动力技术研究院 | High-temperature pure air heater |
| CN111457585B (en) * | 2020-03-27 | 2021-10-01 | 中国航天空气动力技术研究院 | High-temperature pure air heater |
| CN111720993A (en) * | 2020-06-12 | 2020-09-29 | 广西桂仪科技有限公司 | Circular tube water heating device |
| CN112503763A (en) * | 2020-11-04 | 2021-03-16 | 北京航空航天大学 | Small-flow air ultrahigh-temperature electric heating device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101403529B (en) | 2011-02-09 |
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