CN206479083U - A kind of lower plate sealing structure of air-air type heat exchanger - Google Patents
A kind of lower plate sealing structure of air-air type heat exchanger Download PDFInfo
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- CN206479083U CN206479083U CN201621462119.1U CN201621462119U CN206479083U CN 206479083 U CN206479083 U CN 206479083U CN 201621462119 U CN201621462119 U CN 201621462119U CN 206479083 U CN206479083 U CN 206479083U
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- heat exchanger
- exchanger tube
- orifice plate
- lower plate
- gas
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Abstract
The utility model discloses a kind of lower plate sealing structure of air-air type heat exchanger, it is related to the end plate technical field of heat transmission equipment；It includes heat exchanger tube limiting section and the lower plate high pressure gas sealing above the heat exchanger tube limiting section；Heat exchanger tube limiting section includes the first orifice plate, spacing preiection, and the lower end of the heat exchanger tube is provided with the limiting section being engaged with spacing preiection；The lower plate high pressure gas sealing position is in the mezzanine space between first orifice plate and second orifice plate, including part heat exchanger tube and the lower plate sealing sleeve pipe being socketed on heat exchanger tube.The sealing structure forms interface arrangment with orifice plate in itself using heat exchanger tube, and only when shrinking, exchange heat pipe is limited, and while can preventing that heat exchanger tube from shrinking, the problem of also not having weld fatigue of materials is simple in construction, durable in use.
Description
Technical field
The utility model is related to the end plate technical field of heat transmission equipment, in particular to a kind of lower plate of gas-gas type heat interchanger
Sealing structure.
Background technology
With the increasingly depleted of oil, coal etc., energy problem is increasingly highlighted in face of people, except tapping a new source of energy
Outside, the saving of the existing energy and recycling also turn into people's priority fields of study.
In energy utilization technology, heat exchanger be cooling hot fluid each other heat-shift and be not directly contacted with one
Equipment is planted, tubular type gas-gas heat exchanger therein has a wide range of applications in fields such as coal-burning boiler, waste incineration and generating electricities.
In the prior art, flue gas is often separated only with metallic plate, time length easily causes the corrosion of sheet material, also,
Seal is chronically exposed in the environment of flue gas, also easily failure.
The problem of heat exchanger tube that people are made of PTFE is to overcome flue gas corrosion, on the heat exchanger of big flux, often
Can using the longer heat exchanger tube of large scale, length, be now passed through the heat exchanger tube brought before and after flue gas expand with heat and contract with cold problem, change
Telescoping problem of the heat pipe on bottom plate is just more serious, once collapsing into the shell side of heat exchanger, cold fluid and hot fluid can be caused to mix,
Destroy the operation of whole production line.
Authorization Notice No. discloses a kind of tubular type gas-gas heat exchanger for the U of CN 202814194 Chinese utility model patent
Bottom plate, it includes being welded with heat exchanger tube on bottom orifice plate, bottom orifice plate, fixes heat exchanger tube with this, prevent it shrinks back from changing
In the shell side of hot device, which employs welding procedure, more bothers, and heat exchanger tube is without moveable space, after long-term use,
The material of weld is also easy to produce fatigue, and then is broken, and influences the service life of heat exchanger.
Utility model content
The purpose of this utility model seeks to provide a kind of lower plate sealing structure of gas-gas type heat interchanger, and it utilizes heat exchange
Pipe forms interface arrangment with orifice plate in itself, and only when shrinking, exchange heat pipe is limited, and can prevent heat exchanger tube from shrinking same
When, the problem of also not having weld fatigue of materials is simple in construction, durable in use.
To achieve the above object, the lower plate sealing structure of a kind of gas-gas type heat interchanger designed by the utility model, including
Heat exchanger tube limiting section and the lower plate high pressure gas sealing above the heat exchanger tube limiting section；
Heat exchanger tube limiting section includes being provided with the first orifice plate, first orifice plate under supply heat exchanger tube to pass through first
Hole, the lower surface of first orifice plate, the edge of the first lower opening are additionally provided with spacing preiection, and the lower end of the heat exchanger tube is set
Limiting section is equipped with, during the heat exchanger tube contract on cooling, the spacing preiection is by stopping that the limiting section is realized to the heat exchange
Pipe it is spacing；
It is provided with the second spaced orifice plate, second orifice plate and opens up above first orifice plate
There is the second lower opening, second lower opening is adapted with first lower opening causes the heat exchanger tube running through under described first vertically
Orifice plate and second orifice plate；
Mezzanine space of the lower plate high pressure gas sealing position between first orifice plate and second orifice plate
It is interior, including part heat exchanger tube and the lower plate sealing sleeve pipe that is socketed on heat exchanger tube, offer lower plate in the lower plate sealing sleeve pipe
High pressure gas enters hole.
Heat exchanger tube is made of anti-corrosion material, and anti-corrosion material is usually polytetrafluoroethylene (PTFE).
During actual motion, gauge pressure is filled with about in the mezzanine space between first orifice plate and second orifice plate
500Pa gases at high pressure, gases at high pressure enter hole along lower high pressure gas and entered in the heat exchange flue gas in shell side, and in lower sleeve gasket pipe
Air curtain is formed between heat exchanger tube, bottom leakage of the flue gas from heat exchanger tube that exchange heat effectively is prevented.
As the preferred of above-mentioned technical proposal, the limiting section outwards turns down the lower folding of formation for the lower edge of the heat exchanger tube
Side, the outer wall formation notch of the lower hem and the heat exchanger tube, clamping enters the neck when spacing preiection is spacing
In structure.
As the preferred of above-mentioned technical proposal, the outer surface of the spacing preiection for bending cambered surface, and from top to bottom to
It is interior to draw in.
When spacing preiection clamping enters notch, the outer surface of the spacing preiection with gradually inwardly drawing in is in contact, and shrinks
Power it is bigger, then the combination of lower hem and spacing preiection is closer, with the bending of spacing preiection outer surface, the friction suffered by it
The screen resilience of power and material in itself is also bigger, i.e., be contracted to the beginning that is in contact with spacing preiection, the knot of spacing preiection in heat exchanger tube
Structure can provide the buffering leeway of heat exchanger tube deformation, and its limitation dynamics for exchanging heat pipe is gradually increased, such heat exchanger tube deformation
Stress be released, will not accumulate, also be hardly damaged.
As the preferred of above-mentioned technical proposal, the upper end of the lower plate sealing sleeve pipe is welded on second orifice plate,
Lower end is welded on first up-hole plate.
As the preferred of above-mentioned technical proposal, lower plate anticorrosive coat is lined with below second orifice plate.
The lower plate anticorrosive coat is made up of polytetrafluoroethylmaterial material.
The utility model compared with prior art, with advantages below and beneficial effect：
（1）The lower plate sealing structure of the gas-gas type heat interchanger forms interface arrangment with orifice plate in itself using heat exchanger tube, only
When shrinking, exchange heat pipe is limited, and while can preventing that heat exchanger tube from shrinking, asking for weld fatigue of materials is not also had
Topic is simple in construction, durable in use；
（2）The lower plate sealing structure of the gas-gas type heat interchanger is using the formation sealing of high pressure air curtain, it is ensured that the flue gas in shell side
It will not reveal, will not also corrode sealing structure；
（3）The lower plate sealing structure of the gas-gas type heat interchanger is relatively simple, and production cost is low, easily realizes and on a large scale should
With.
Brief description of the drawings
Fig. 1 is the diagrammatic cross-section of gas-gas type heat interchanger lower plate sealing structure.
Fig. 2 is the schematic perspective view of gas-gas type heat interchanger lower plate sealing structure.
In figure：Heat exchanger tube a, limiting section a-2, heat exchanger tube limiting section 21, the first orifice plate 211, spacing preiection 212, lower plate
High pressure gas sealing 22, the second orifice plate 221, lower plate sealing sleeve pipe 222, lower plate high pressure gas enter hole 2221, lower plate anticorrosive coat
223。
Embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings：
Embodiment 1：With reference to Fig. 1 and Fig. 2, a kind of lower plate sealing structure of gas-gas type heat interchanger, including heat exchanger tube limiting section
21 and the lower plate high pressure gas sealing 22 positioned at the top of the heat exchanger tube limiting section 21；
Heat exchanger tube limiting section 21 includes being provided with the first orifice plate 211, first orifice plate 211 to be worn for heat exchanger tube a
The first lower opening crossed, the lower surface of first orifice plate 211, the edge of the first lower opening are additionally provided with spacing preiection 212, institute
Cambered surface of the outer surface of spacing preiection 212 for bending is stated, and is inwardly drawn in from top to bottom, the lower end of the heat exchanger tube a is provided with
Limiting section a-2, the limiting section a-2 outwards turn down the lower hem of formation, the lower hem and institute for the lower edge of the heat exchanger tube a
State heat exchanger tube a outer wall formation notch；
During the heat exchanger tube a contract on cooling, the spacing preiection 212 is by stopping that the limiting section a-2 is realized to described
Heat exchanger tube a's is spacing, i.e., clamping enters in the notch when described spacing preiection 212 is spacing；
The top of first orifice plate 211 is provided with the second spaced orifice plate 221, second orifice plate
Offer the second lower opening on 221, second lower opening is adapted with first lower opening so that the heat exchanger tube a running through vertically
First orifice plate 211 and second orifice plate 221, the lower section of second orifice plate 221 is lined with PTFE material and is made
Lower plate anticorrosive coat 223；
The lower plate high pressure gas sealing 22 is located between first orifice plate 211 and second orifice plate 221
In mezzanine space, including part heat exchanger tube a and the lower plate sealing sleeve pipe 222 being socketed on heat exchanger tube a, the lower plate sealing sleeve pipe
222 upper end is welded on second orifice plate 221, and lower end is welded on first up-hole plate 211, is offered down thereon
Plate high pressure gas enters hole 2221.
Claims (5)
1. a kind of lower plate sealing structure of gas-gas type heat interchanger, including heat exchanger tube limiting section（21）And positioned at the heat exchanger tube
Limiting section（21）The lower plate high pressure gas sealing of top（22）；
Heat exchanger tube limiting section（21）Including the first orifice plate（211）, first orifice plate（211）On be provided with and supply heat exchanger tube
（a）The first lower opening passed through, first orifice plate（211）Lower surface, the edge of the first lower opening be additionally provided with limit convex
Rise（212）, the heat exchanger tube（a）Lower end be provided with limiting section（a-2）, the heat exchanger tube（a）It is described spacing during contract on cooling
It is raised（212）By stopping the limiting section（a-2）Realize to the heat exchanger tube（a）It is spacing；
First orifice plate（211）Top be provided with the second spaced orifice plate（221）, second orifice plate
（221）On offer the second lower opening, second lower opening is adapted with first lower opening so that the heat exchanger tube（a）Vertical
Through first orifice plate（211）With second orifice plate（221）；
The lower plate high pressure gas sealing（22）Positioned at first orifice plate（211）With second orifice plate（221）Between
Mezzanine space in, including part heat exchanger tube（a）Be socketed in heat exchanger tube（a）On lower plate sealing sleeve pipe（222）, the lower plate
Sealing sleeve pipe（222）On offer lower plate high pressure gas and enter hole（2221）.
2. a kind of lower plate sealing structure of gas-gas type heat interchanger according to claim 1, it is characterised in that：It is described spacing
Portion（a-2）For the heat exchanger tube（a）Lower edge outwards turn down the lower hem of formation, the lower hem and the heat exchanger tube（a）'s
Outer wall formation notch, the spacing preiection（212）Clamping enters in the notch when spacing.
3. a kind of lower plate sealing structure of gas-gas type heat interchanger according to claim 1 or 2, it is characterised in that：The limit
Position is raised（212）Outer surface for bending cambered surface, and from top to bottom inwardly draw in.
4. a kind of lower plate sealing structure of gas-gas type heat interchanger according to claim 1, it is characterised in that：The lower plate
Sealing sleeve pipe（222）Upper end be welded on second orifice plate（221）On, lower end is welded on first orifice plate（211）
On.
5. a kind of lower plate sealing structure of gas-gas type heat interchanger according to claim 1, it is characterised in that：Described second
Orifice plate（221）Lower section be lined with lower plate anticorrosive coat（223）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621462119.1U CN206479083U (en) | 2016-12-29 | 2016-12-29 | A kind of lower plate sealing structure of air-air type heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621462119.1U CN206479083U (en) | 2016-12-29 | 2016-12-29 | A kind of lower plate sealing structure of air-air type heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206479083U true CN206479083U (en) | 2017-09-08 |
Family
ID=59751291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621462119.1U Active CN206479083U (en) | 2016-12-29 | 2016-12-29 | A kind of lower plate sealing structure of air-air type heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206479083U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106610248A (en) * | 2016-12-29 | 2017-05-03 | 湖州鼎诚环保科技有限公司 | Lower plate sealing structure of gas-gas heat exchanger |
| CN110686271A (en) * | 2019-10-15 | 2020-01-14 | 老河口新景科技有限责任公司 | Air heater with air-tight seal structure |
-
2016
- 2016-12-29 CN CN201621462119.1U patent/CN206479083U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106610248A (en) * | 2016-12-29 | 2017-05-03 | 湖州鼎诚环保科技有限公司 | Lower plate sealing structure of gas-gas heat exchanger |
| CN110686271A (en) * | 2019-10-15 | 2020-01-14 | 老河口新景科技有限责任公司 | Air heater with air-tight seal structure |
| CN110686271B (en) * | 2019-10-15 | 2022-01-07 | 老河口新景科技有限责任公司 | Air heater with air-tight seal structure |
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