CN207610395U - A kind of preheating device - Google Patents
A kind of preheating device Download PDFInfo
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- CN207610395U CN207610395U CN201721650409.3U CN201721650409U CN207610395U CN 207610395 U CN207610395 U CN 207610395U CN 201721650409 U CN201721650409 U CN 201721650409U CN 207610395 U CN207610395 U CN 207610395U
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- ceramic matrix
- heating wire
- preheating device
- preheating
- oxidation bed
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Abstract
The utility model is related to the preheating technology fields of solid dielectric, and in particular to a kind of preheating device.Preheating device provided by the utility model, including shell, ceramic matrix, heating wire, insulating terminal and tail cable, the shell is interior to form accommodating chamber, and the ceramic matrix is set in the accommodating chamber, and the heating wire is around the outside for being located at the ceramic matrix.The utility model leads to internal heating wire and is wrapped on ceramic matrix, that is, ensure that the insulation of heating wire, and heat to ceramic matrix；The porous structure of ceramic matrix makes it with larger specific surface area and very strong storage emission capacity, be conducive to preheating of the hot wind to counter flow oxidation bed, in addition the structure of preheating device provided by the present application is simple, compact, it is safe and reliable to operation, it is easy to maintain, radiation with the dual preheating of convection current, in addition ceramic matrix height store emission capacity greatly improve capacity usage ratio, obviously increase pre-heat effect, low manufacture cost.
Description
Technical field
The utility model is related to the preheating technology fields of solid dielectric, and in particular to a kind of preheating device.
Background technology
Heat transfer type mainly divides：Three kinds of heat radiation, heat transfer and thermal convection current.Heat radiation and heat transfer by heat conduction efficiency are low, single
Pure is preheated with heat radiation and heat exchange pattern, and preheating requirement is often not achieved, therefore thermal convection must be used to adverse current oxygen
Change bed to be preheated, that is, utilizes thermal current to preheat counter flow oxidation bed.
Gas preheating method in the prior art is largely divided into two classes, and one kind is to pass through hot adverse current oxygen using the waste heat of flue gas
Change bed to preheat:(such as：Airair heat exchanger), another kind is to generate heat using burning gases come the heat to required preheating
Counter flow oxidation bed is preheated (such as：Burner).
The premise preheated using the waste heat of flue gas is the need for high-temperature flue gas heat source.It is past in certain back yard industries experiment
It supplies toward without high-temperature flue gas heat source, often cannot achieve with fume afterheat preheating heat counter flow oxidation bed.
Existing combustion type gas preheater generally all only will simply be lighted after air and combustion gas mixing, in order to make combustion
It burns into capable abundant, will increase the ratio of air and combustion gas, but there is a problem that efficiency of combustion is low, and due to air
The ratio of occupancy is great, and a large amount of combustion heat can be caused to lose, to waste the energy, increase cost.Meanwhile existing burning
Formula gas preheater takes up a large area, invests high, complex process, is not suitable for being used in small test device.
It in the hot counter flow oxidation experimental rig of coal mine wind-lack gas, needs to generate hot wind with preheating device, with hot wind to storing
Hott bed is preheated, and preheating temperature needs to reach 850-1000 DEG C.Entire energy storage bed is compared with extraneous heat-insulated and seal request
Height considers, traditional preheating device all cannot be satisfied requirement from structure arrangement, temperature condition, craftsmanship, cost etc..
Utility model content
(1) technical problem to be solved in the utility model is：Existing preheating device is in coal mine wind-lack gas heat adverse current oxygen
Makeup set present in the aspect such as structure difficult arrangement, investment height, complex process, heat utilization ratio be low deficiency.
(2) technical solution
In order to solve the above-mentioned technical problem, the utility model provides a kind of preheating device, including shell, ceramic matrix,
Heating wire, insulating terminal and tail cable, the shell is interior to form accommodating chamber, and the ceramic matrix is set to the accommodating chamber
Interior, for the heating wire around the outside for being located at the ceramic matrix, the counter flow oxidation bed includes left oxidation bed and right oxidation bed, institute
It states in left oxidation bed and the opposite accommodating chamber set at left and right sides of the ceramic matrix of right oxidation bed, the both ends point of the heating wire
It is not connected with the tail cable by insulating terminal.
The beneficial effects of the utility model：
Preheating device provided by the utility model, including shell, ceramic matrix, heating wire, insulating terminal and tail portion electricity
Cable forms accommodating chamber in the shell, and the ceramic matrix is set in the accommodating chamber, and the heating wire is around being located at the ceramics
The outside of matrix, the counter flow oxidation bed include left oxidation bed and right oxidation bed, and the left oxidation bed and right oxidation bed are set relatively
In accommodating chamber at left and right sides of the ceramic matrix, the both ends of the heating wire pass through insulating terminal and the tail portion respectively
Cable is connected.
The utility model adds thermal insulation layer by the way that heating wire to be arranged in inside device, effectively prevents dissipating for heat
Hair；Internal heating wire is wrapped on ceramic matrix, that is, ensure that the insulation of heating wire, and heat to ceramic matrix；Ceramics
The porous structure of matrix makes it with larger specific surface area and very strong storage emission capacity, when air-flow passes through ceramic matrix,
Heat exchange effect is notable, and hot wind is heated to higher temperature, is conducive to preheating of the hot wind to counter flow oxidation bed, while passing through three
Three-way electromagnetic valve periodic transformation's gas flow periodically preheats preheating device both sides counter flow oxidation bed；In addition to this,
Heating wire is arranged in inside device and close to counter flow oxidation bed, can be preheated to counter flow oxidation bed by radiant heat transfer mode,
The heating power of the heating device can be adjusted between 0~20kw, in addition the knot of preheating device provided by the present application
Structure is simple, compact, safe and reliable to operation, easy to maintain, radiation and the dual preheating of convection current, and ceramic matrix height stores emission capacity in addition
Greatly improve capacity usage ratio, hence it is evident that increase pre-heat effect, low manufacture cost.
Further, the outside wall surface of the shell is equipped with one layer of thermal insulation layer.
Further, the thermal insulation layer is the alumina silicate blanket being wrapped on the outer shell outer wall face.
Further, the preheating device further includes attachment device, and the attachment device includes connecting rod and connecting flange, institute
Connecting rod is stated to be located in the thermal insulation layer across the shell and both ends, the both ends of the connecting rod respectively by connecting flange with
The thermal insulation layer is connected.
Further, the attachment device is equipped with two groups, and attachment device described in two groups is relatively set on the ceramic matrix
Both sides.
Further, the ceramic matrix is porous regenerator ceramics, and the heating wire is nichrome wire.
Further, the tail cable be set to the accommodating chamber outside, one end of the insulating terminal be located at
Heating wire in the accommodating chamber is connected, and the other end is connected with the tail cable.
Description of the drawings
The advantages of the utility model is above-mentioned and/or additional aspect is from combining in description of the following accompanying drawings to embodiment and will become
Obviously and it is readily appreciated that, wherein：
Fig. 1 is the sectional view of preheating device described in the utility model.
Correspondence in wherein Fig. 1 between reference numeral and component names is：
1, right oxidation bed, 2, thermal insulation layer, 3, shell, 4, ceramic matrix, 5, heating wire, 6, insulating terminal, 7, left oxidation
Bed, 8, tail cable, 9, connecting rod, 10, connecting flange.
Specific implementation mode
In order to be more clearly understood that the above objects, features, and advantages of the utility model, below in conjunction with the accompanying drawings and have
The utility model is further described in detail in body embodiment.It should be noted that in the absence of conflict, this Shen
The feature in embodiment and embodiment please can be combined with each other.
As shown in Figure 1, the utility model provides a kind of preheating device, including shell 3, ceramic matrix 4, heating wire 5,
Insulating terminal 6 and tail cable 8, the shell 3 is interior to form accommodating chamber, and the ceramic matrix 4 is set in the accommodating chamber, institute
Heating wire 5 is stated around the outside for being located at the ceramic matrix 4, the counter flow oxidation bed includes left oxidation bed 7 and right oxidation bed 1, institute
It states left oxidation bed 7 and right oxidation bed 1 is opposite in the accommodating chamber of 4 left and right sides of the ceramic matrix, the two of the heating wire 5
End is connected by insulating terminal 6 with the tail cable 8 respectively.
Preheating device provided by the utility model, including shell 3, ceramic matrix 4, heating wire 5, insulating terminal 6 and tail
Portion's cable 8 forms accommodating chamber in the shell 3, and the ceramic matrix 4 is set in the accommodating chamber, and the heating wire 5 is around being located at
The outside of the ceramic matrix 4.Since the utility model is by the way that heating wire 5 to be arranged in inside device, and thermal insulation layer 2 is added,
Effectively prevent distributing for heat；Internal heating wire 5 is wrapped on ceramic matrix 4, that is, ensure that the insulation of heating wire 5, and right
Ceramic matrix 4 is heated；The porous structure of ceramic matrix 4 enables it with larger specific surface area and very strong storage heat release
Power, when air-flow passes through ceramic matrix 4, heat exchange effect is notable, and hot wind is heated to higher temperature, is conducive to hot wind to adverse current
The preheating of oxidation bed, while by three-way magnetic valve periodic transformation's gas flow, periodically to preheating device both sides adverse current
Oxidation bed is preheated；In addition to this, heating wire 5 is arranged in inside device and close to counter flow oxidation bed, can pass through radiant heat transfer
Mode preheats counter flow oxidation bed, and the heating power of the heating device can be adjusted between 0~20kw, in addition
The structure of preheating device provided by the present application is simple, compact, safe and reliable to operation, easy to maintain, radiation and the dual preheating of convection current,
In addition the high emission capacity that stores of ceramic matrix 4 greatly improves capacity usage ratio, hence it is evident that increases pre-heat effect, cost of manufacture is lower.
As shown in Figure 1, the outside wall surface of the shell is equipped with one layer of thermal insulation layer 2, it can be effective by the way that thermal insulation layer 2 is arranged
It prevents the heat in accommodating chamber from distributing outward, substantially increases heat utilization ratio, can significantly increase pre-heat effect.It is preferred that
Ground, the thermal insulation layer 2 are the alumina silicate blanket being wrapped in 3 outside wall surface of the shell, and alumina silicate blanket can further reduce pre-
Thermal surface radiating improves heat utilization ratio, while the heat insulation of the alumina silicate blanket is more preferable, and cheap, sexual valence
Compare higher.
As shown in Figure 1, the preheating device further includes attachment device, the attachment device includes connecting rod 9 and connecting flange
10, the connecting rod 9 passes through the shell and both ends are located in the thermal insulation layer 2, and the both ends of the connecting rod 9 pass through company respectively
Acting flange 10 is connected with the thermal insulation layer 2, easy to disassemble in this way to install and safeguard the preheating device.Preferably, such as Fig. 1 institutes
Show, the attachment device is equipped with two groups, the opposite both sides for being set to the ceramic matrix 4 of attachment device described in two groups.
Optionally, the ceramic matrix 4 is porous regenerator ceramics, that is, ensure that the insulation of heating wire 5, and to thermal storage ceramic
It is heated；The porous structure of thermal storage ceramic makes it with larger specific surface area and very strong storage emission capacity, air-flow warp
When crossing thermal storage ceramic, heat exchange effect is notable, and hot wind is heated to higher temperature, is conducive to hot wind to the pre- of counter flow oxidation bed
Heat；In addition to this, heating wire 5 is arranged in inside device and close to counter flow oxidation bed, can be by radiant heat transfer mode to adverse current oxygen
Change bed to be preheated, the size of hole can wind outer diameter according to heating wire 5 and reasonably select wherein on porous regenerator ceramics；It is preferred that
Ground, the heating wire 5 are nichrome wire, and nichrome running temperature can be to 1250 DEG C, although Aludirome heating wire 5
Advantage is running temperature height, and maximum operating temperature can be to 1400 DEG C, but ferrum-chromium-aluminum heating wire 5 is easy to become under wind state
It is crisp, service life is influenced, therefore selects impregnable nichrome heating wire 5 under wind state；Due to being in hot environment, often
The steel of rule can not bear 1000 DEG C or more of high temperature.Therefore the above-mentioned selection of shell 3 can heat safe 310S stainless steels making.
Since 5 surface of heating wire is on-insulated, therefore high-temperature insulation binding post 6 is installed additional on 3 surface of shell, heating wire 5 is drawn
Go out, to access power supply, it is preferable that the both ends of the heating wire 5 pass through insulating terminal 6 and 8 phase of the tail cable respectively
Even；Specifically, the tail cable 8 is set on the outside of the accommodating chamber, one end of the insulating terminal 6 and positioned at the appearance
Receive intracavitary heating wire 5 be connected, the other end is connected with the tail cable 8.
In conclusion the utility model is by the way that heating wire to be arranged in inside device, and adds thermal insulation layer, effectively prevent
Heat distributes；Internal heating wire is wrapped on ceramic matrix, that is, ensure that the insulation of heating wire, and add to ceramic matrix
Heat；The porous structure of ceramic matrix makes it with larger specific surface area and very strong storage emission capacity, and air-flow is by ceramics
When matrix, heat exchange effect is notable, and hot wind is heated to higher temperature, is conducive to preheating of the hot wind to counter flow oxidation bed, together
When by three-way magnetic valve periodic transformation's gas flow, periodically preheating device both sides counter flow oxidation bed is preheated；
In addition to this, heating wire is arranged in inside device and close to counter flow oxidation bed, can be by radiant heat transfer mode to counter flow oxidation bed
It is preheated, the heating power of the heating device can be adjusted between 0~20kw, in addition preheating provided by the present application
The structure of device is simple, compact, safe and reliable to operation, easy to maintain, radiation and the dual preheating of convection current, and ceramic matrix height stores in addition
Emission capacity greatly improves capacity usage ratio, hence it is evident that increases pre-heat effect, low manufacture cost.
In the description of the present invention, it should be noted that the orientation or positional relationship of the instructions such as term "upper", "lower"
To be based on the orientation or positional relationship shown in the drawings, it is merely for convenience of describing the present invention and simplifying the description, without referring to
Show or imply that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore cannot manage
Solution is limitations of the present invention.In addition, term " first ", " second " are used for description purposes only, and should not be understood as indicating
Or imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connection ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, can also be electrical connection；Can directly be connected to, can also by intermediary indirect communication,
It can be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned art with concrete condition
The concrete meaning of language in the present invention.In addition, in the description of the present invention, unless otherwise indicated, " multiples' " contains
Justice is two or more.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (7)
1. a kind of preheating device, for heating counter flow oxidation bed, it is characterised in that：Including shell, ceramic matrix, heating wire, absolutely
Edge binding post and tail cable, the shell is interior to form accommodating chamber, and the ceramic matrix is set in the accommodating chamber, the electric heating
Filament winding is located at the outside of the ceramic matrix, and the counter flow oxidation bed includes left oxidation bed and right oxidation bed, the left oxidation bed
In the opposite accommodating chamber set at left and right sides of the ceramic matrix of right oxidation bed, the both ends of the heating wire pass through insulation respectively
Binding post is connected with the tail cable.
2. preheating device according to claim 1, it is characterised in that：The outside wall surface of the shell is equipped with one layer of thermal insulation layer.
3. preheating device according to claim 2, it is characterised in that：The thermal insulation layer is to be wrapped in the outer shell outer wall face
On alumina silicate blanket.
4. preheating device according to claim 3, it is characterised in that：The preheating device further includes attachment device, described
Attachment device includes connecting rod and connecting flange, and the connecting rod passes through the shell and both ends are located in the thermal insulation layer, institute
The both ends for stating connecting rod are connected by connecting flange with the thermal insulation layer respectively.
5. preheating device according to claim 4, it is characterised in that：The attachment device is equipped with two groups, connects described in two groups
The opposite both sides for being set to the ceramic matrix of connection device.
6. preheating device according to any one of claims 1 to 5, it is characterised in that：The ceramic matrix is porous regenerator
Ceramics, the heating wire are nichrome wire.
7. preheating device according to claim 6, it is characterised in that：The tail cable is set to the outer of the accommodating chamber
Side, one end of the insulating terminal are connected with the heating wire in the accommodating chamber, the other end and the tail cable phase
Even.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721650409.3U CN207610395U (en) | 2017-12-01 | 2017-12-01 | A kind of preheating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721650409.3U CN207610395U (en) | 2017-12-01 | 2017-12-01 | A kind of preheating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207610395U true CN207610395U (en) | 2018-07-13 |
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ID=62796409
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721650409.3U Active CN207610395U (en) | 2017-12-01 | 2017-12-01 | A kind of preheating device |
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| Country | Link |
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| CN (1) | CN207610395U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022134226A1 (en) * | 2020-12-23 | 2022-06-30 | 山东科技大学 | High-temperature flue gas molten salt heat exchanger and heat exchange method |
-
2017
- 2017-12-01 CN CN201721650409.3U patent/CN207610395U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022134226A1 (en) * | 2020-12-23 | 2022-06-30 | 山东科技大学 | High-temperature flue gas molten salt heat exchanger and heat exchange method |
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