CN2068646U - Hot pipe fire grate - Google Patents
Hot pipe fire grate Download PDFInfo
- Publication number
- CN2068646U CN2068646U CN 90205921 CN90205921U CN2068646U CN 2068646 U CN2068646 U CN 2068646U CN 90205921 CN90205921 CN 90205921 CN 90205921 U CN90205921 U CN 90205921U CN 2068646 U CN2068646 U CN 2068646U
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- CN
- China
- Prior art keywords
- fire grate
- heat
- grate
- boiler
- casing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model which is fitted for boiler with double fire grates is characterized in that a tube bundle of traditional hollow watercooling grate is changed into a fully hermetic heat pipe filled with working medium, the heat-releasing end of the heat pipe is extended into the liquid working medium which is at the lower part of a hermetic box body. A heat exchanger which is used for heating outside cold water is arranged at the top of the box body, and the distilled water is used as the working medium. The box body is fixedly integrated with the grate of a cantilever, through which an independent component separated with the furnace body can be comprised and the integration is inserted in the boiler body. The utility model has the advantages that the integration can be easily assembled, disassembled and repaired and can provide the boiler with the hot water or boiled water and extend service life of the grate because of the fouling eliminated thoroughly.
Description
The utility model relates to the water-cooled grate of double-grate boiler, particularly a kind of heat pipe-type fire grate.
Two-layer about the used fire grate of present double-grate boiler divides, lower floor is the plain cast iron fire grate, and the upper strata is hollow water-cooled grate, and its two ends directly communicate with drum, are full of boiling water in the pipe.Can not be pure quiet because of water quality, fouling can appear inevitably, become the obstacle of heat transfer.The thermic load at fire grate place is the highest in this kind boiler, influences when conducting heat when serious fouling in the fire grate tube bank, and water-cooled grate will burn out because of overheated.For this reason, general boiler all is furnished with water treatment facilities, thereby has increased investment and administrative expenses.In addition, existing boiler purposes is single, can not provide steam, hot water or boiling water simultaneously according to user's needs.This class boiler also have to be repaired the little boiler of shortcoming, especially diameter of difficulty, and fire grate is fixed in the body of heater, in fact can't place under repair, cause very big difficulty to the user.
The purpose of this utility model is to overcome above-mentioned difficulties of the prior art, and a kind of water-cooled grate of non flouling behaviour is provided, and prolongs fire grate service life greatly.
Another purpose of the present utility model is that a kind of multipurpose boiler that steam, hot water or boiling water can be provided simultaneously will be provided.
The 3rd purpose of the present utility model is in order to make fire grate for ease of maintenaince and change.
The purpose of this utility model realizes in the following way: in double-grate boiler, the totally enclosed heat pipe that is filled with working medium is made in hollow water-cooled grate tube bank, its release end of heat stretches into the bottom of an airtight casing and is dipped in the interior liquid working substance of casing, and casing top is provided with the heat exchanger of the extraneous cold water of heating.
Above-mentioned casing can be contained in beyond the boiler, also can be inlaid in the boiler shell, and casing is an individual components together with the fire grate tube bank of cantilever, can be separated with body of heater, thereby have assembling or dismounting property.
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.
Accompanying drawing is the structural representation of heat pipe-type fire grate.
Casing 1, fire grate tube bank 2 and heat exchanger 3 are drawn together in pyrotube furnace package among the figure.Fire grate tube bank 2 is made up of many parallel heat pipes, and heat pipe is L-shaped, is made by seamless steel pipe, takes out air wherein, fills the heat transfer medium with water and raising operating temperature, and shut at two ends.The fire grate of cantilever tube bank 2 is stretched out from casing 1 bottom, and the two is fixed to be one.Helix tube or serpentine coil heat exchanger 3 are equipped with in the cabinets cavity top, and the cold water that needs heating is by passing through in the pipe, and bottom half is filled with certain quantity of fluid working medium 4.Because of the latent heat of water is big, cheaply be easy to get, non-corrosiveness adopts pure distilled water to make working medium usually.Whole box body and the extraneous air-tight state that keeps.The casing 1 outer heat insulation layer that is surrounded by.
L shaped heat pipe grate tube bank 2 comprises horizontal segment 22 and vertical section 21 two parts.The horizontal segment 22 that is in the burner hearth is heat absorbing end, and vertical section 21 in the casing is release end of heat.When heat pipe grate was heated in burner hearth, the liquid heat-transfer medium of horizontal segment was in hot junction heat absorption evaporation, and steam is by flowing to cold junction in the pipe, and emitted latent heat at this place, and the steam liquid that congeals into again flows back to the hot junction heat absorption.Cold junction is that release end of heat helps coagulating liq straight up and utilizes gravity fall to reflux.The cold junction of heat pipe also can adopt the form of helix tube or coil pipe.The heat pipe cold junction also can be provided with radiating fin, with augmentation of heat transfer.The cantilever end of heat pipe grate tube bank 2 is downward-sloping, helps full close steam bubble rising and coagulating liq backflow.Because of whole process occurs in the airtight heat pipe, adopt treated pure working medium, as distilled water, can not produce incrustation scale fully, thereby thermal resistance is little, conduct heat rapidly, the furnace grate tube wall temperature is near the temperature of boiled water in the heat pipe, water in the heat pipe grate is in the full state that closes, temperature is generally below 340 ℃, and general carbon steel to allow operating temperature be 480 ℃, although thereby temperature height in the stove, but still can work on overall safety ground by the fire grate that carbon steel is made, so fire grate adopts general mild steel to get final product, and tube wall correspondingly can be thinner, and prolong the service life of fire grate greatly.
The release end of heat of heat pipe grate tube bank 2 makes interior liquid working substance 4 ebullition, gasifications of casing form to satisfy in a large number and closes steam, is full of the superjacent air space of liquid working substance.Full steam and the heat exchanger 3 cold walls that close contact, and steam discharges gasification latent heat, condenses into liquid, and heat is passed to the cold water in the heat exchanger, and heat exchanger 3 is with regard to exportable hot water or boiling water even steam.The liquid that condenses goes back to casing 1 bottom following of gravity effect.
Heat pipe-type fire grate among the figure can be contained in beyond the boiler as a separate part, also can embed in the boiler body 10, makes the side that the cantilever fire grate is housed become the part of boiler inner wall.After packing into, casing 1 should seal with boiler wall maintenance on every side.When the needs place under repair, whole heat pipe grate can disassemble from boiler body, loads onto again after fixing again.Remove and install conveniently, overcome the shortcoming that present double grate boiler is repaired difficulty.
The casing 1 of heat pipe grate can be rectangle, circle or arc box body.
Pyrotube furnace raftings when capable, and the cold water that flows through heat exchanger 3 can in time be taken away the heat in the casing, and the temperature and the pressure of full Heshui are lower in the casing, the good cooling results of opposite heat tube cold junction, thereby inside heat pipe slightly is negative pressure, do not have explosion danger, and the possibility of leakage is also very little.Working medium circulates in the system of sealing, can not dryout, and is safe and reliable.For preventing in the casing just in case hypertonia is equipped with safety valve 12 on the casing.Should be condensing of clean steam in the casing 1, need be provided with incoagulable gas vent valve 11.
The heat pipe-type fire grate has the advantage that heat output is big, heat transfer efficiency is high owing to thoroughly eliminated fouling and adopted the latent heat heat exchange that phase transformation is arranged.Because of conducting heat rapidly, the fire grate temperature is lower, has prolonged the service life of fire grate greatly.Boiler needn't adopt water treatment facilities simultaneously, has reduced investment and operating cost.
This heat pipe-type fire grate can provide hot water, boiling water even steam for boiler is additional by heat exchanger 3, thereby becomes the multipurpose boiler.If boiler itself is used to provide steam, then heat pipe grate just can be used to provide hot water or boiling water.If boiler itself is used to provide hot water, then heat pipe grate can be used to provide boiling water and steam.The user can be as required, selects neatly and regulate.When not needing hot water or boiling water, promptly deliver to the boiler feed water mouth, improve the inflow temperature of boiler.
Referring to accompanying drawing, critical piece is:
Fire door, 9-upper furnace door, 10-body of heater, 11-vent valve, 12-safety valve among 1-casing, the tube bank of 2-fire grate, 3-heat exchanger, 4-working medium, 5-exhanst gas outlet, 6-lower fire grating, 7-lower furnace door, the 8-.
Claims (5)
1, a kind of fire grate of double grate boiler, comprise hollow fire grate tube bank 2, it is characterized in that said fire grate tube bank 2 is the totally enclosed heat pipes that are filled with working medium, the release end of heat 21 of heat pipe stretches into the bottom of airtight casing 1 and is dipped in the interior liquid working substance 4 of casing, and casing 1 top is provided with the heat exchanger 3 of the extraneous cold water of heating.
2, fire grate as claimed in claim 1, the fire grate tube bank 2 that it is characterized in that said casing 1 and cantilever are formed an individual components that can be separated with body of heater 10, are inlaid in the boiler shell.
3, fire grate as claimed in claim 1 or 2 is characterized in that said casing 1 is the casing of rectangle, circle or arc.
4, fire grate as claimed in claim 1 or 2 is characterized in that the cantilever of said fire grate tube bank 2 is downward-sloping.
5, fire grate as claimed in claim 1 or 2 is characterized in that said heat exchanger 3 is helix tube or serpentine coil heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90205921 CN2068646U (en) | 1990-04-25 | 1990-04-25 | Hot pipe fire grate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90205921 CN2068646U (en) | 1990-04-25 | 1990-04-25 | Hot pipe fire grate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2068646U true CN2068646U (en) | 1991-01-02 |
Family
ID=4886604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90205921 Withdrawn CN2068646U (en) | 1990-04-25 | 1990-04-25 | Hot pipe fire grate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2068646U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103134180A (en) * | 2013-03-05 | 2013-06-05 | 张勤福 | Coal direct-fired machine with coiler and liquid-cooled grate |
-
1990
- 1990-04-25 CN CN 90205921 patent/CN2068646U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103134180A (en) * | 2013-03-05 | 2013-06-05 | 张勤福 | Coal direct-fired machine with coiler and liquid-cooled grate |
| CN103134180B (en) * | 2013-03-05 | 2015-11-25 | 张勤福 | Be provided with the coal direct-burning machine of coil pipe and liquid-cooled fire grate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |