CN201096406Y - Normal pressure vertical type superconductive rapid heating boiler - Google Patents
Normal pressure vertical type superconductive rapid heating boiler Download PDFInfo
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- CN201096406Y CN201096406Y CNU2007201275346U CN200720127534U CN201096406Y CN 201096406 Y CN201096406 Y CN 201096406Y CN U2007201275346 U CNU2007201275346 U CN U2007201275346U CN 200720127534 U CN200720127534 U CN 200720127534U CN 201096406 Y CN201096406 Y CN 201096406Y
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- boiler
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 88
- 239000003245 coal Substances 0.000 claims abstract description 36
- 238000002485 combustion reaction Methods 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 230000005484 gravity Effects 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 3
- 239000012141 concentrate Substances 0.000 claims 1
- 239000002893 slag Substances 0.000 abstract description 3
- 238000010792 warming Methods 0.000 abstract description 2
- 239000002956 ash Substances 0.000 description 19
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000010883 coal ash Substances 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000007799 cork Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
Disclosed is a normal pressure vertical superconducting fast heating boiler, which is a boiler being used by urban and rural residents for warming in winter. The boiler comprises a double-wall vertical boiler body, and an automatic fallen coal box is attached to the boiler body. Three rows of fire grates are arranged in the hearth, the lower parts of the fire grates are provided with an automatic ash removal box which can feed the coal and remove the slag automatically. The upper parts of the fire grates are equipped with a main combustion chamber, and the upper part of the main combustion chamber is provided with a fire collection tube bank for changing the dispersed flame of the hearth into a directive fire flow high-temperature layer. The upper part of the fire collection pipe has two superconducting fast warning water-holding bodies, superconducting tube banks are arranged on the sides exposed to fire of the two water-holding bodies respectively, and the superconducting liquid in the superconducting pipes is abruptly changed into the high temperature gaseous state under the function of the high temperature gas flow, and the heat is rapidly fed to the water in the water-holding bodies, then the water temperature has a rapid increase. The boiler adopts the incremental fast heating by layers, grades and sections with high heat exchange ratio. The boiler saves coal by over 45 percent, increases the thermal efficiency by over 50 percent and reaches the water temperature of over 90DEG C compared with similar products.
Description
Technical field
The utility model relates to a kind of atmospheric vertical super conduction quick heating boiler, it is to live in the heating boiler that 200 square metres of following house types are used for urban and rural residents.
Background technology
Present China urban and rural residents live in below 200 square metres in the small apartment family, and warming mostly uses the plain edition boiler heating.This boiler is the snakelike conduit in the heat transferred burner hearth during with fuel combustion, offers radiator heating through aqueduct again after the water heating in the water pipe.Because boiler has only a combustion chamber, the intensification of the interior water of pipe is slow, and heat exchanger effectiveness is low, and burning simultaneously is not thorough, and most of waste heat slatterns in vain, and this boiler power consumption is big, wastes energy.
The utility model content
One of the purpose of this utility model, a kind of atmospheric vertical super conduction quick heating boiler is provided, it carries out the high temperature heat of gathering in the burner hearth classification, segmentation, is transported to holding water body continuously by the superconduction nest of tubes, and the water that holds water body is rapidly heated, and realizes carrying out efficiently, apace heat exchange.
Two of the purpose of this utility model is to be provided with automatic coal breakage case and to remove the lime-ash case at the boiler built-in, utilize poor, the gravity of natural height, coal-fired whereabouts automatically replenishes to main chamber, directly be fed in the burner hearth after simultaneously cold coal being heated and burn, the coal ash of after-flame is passed through the upset fire grate, lime-ash falls into automatically except that in the lime-ash case, alleviates manual labor greatly.
Be achieved in that during the technical solution of the utility model
A kind of atmospheric vertical super conduction quick heating boiler comprises by body of heater and automatic coal breakage casing; The inside and outside wall column type body of heater that body of heater is become by welded steel plate, it is automatic coal breakage case that the left side of body of heater is welded into square column type body by steel plate.Be provided with hot-water outlet pipe, normal pressure atmospheric communicating pipe, temperature tube and smokejack at the top of body of heater, the upper and lower dedusting hole that is arranged with, the middle and upper part of body of heater, the body of heater bottom is provided with into cold water pipe and blow-off pipe, and the position of blow-off pipe is lower than into cold water pipe.
It is characterized in that:
Between the outer wall of body of heater and the stove inwall water supply chamber is set, this water cavity is divided into sewer from top to bottom, middle water channel and water-supply line; Bottom of furnace body is provided with and removes the lime-ash case automatically, removes lime-ash case front plug and is provided with air door.The top of removing the lime-ash case is provided with three grate furnace grates, and fire grate top is main chamber, and main chamber top is provided with poly-fire tube group, on poly-fire tube group top first, second super pipe appearance water body that is rapidly heated is set; First both sides that hold water body are symmetrically arranged with water inlet pipe, and water inlet pipe is connected with middle water channel, and appearance water body counter-fire is faced the wall and meditated and is provided with the superconduction nest of tubes, and the body of heater position of corresponding superconduction nest of tubes is provided with the dedusting hole.
The described three grate furnace grates that are set up in parallel are: the first grate furnace grate is stacked together by the upper, middle and lower-ranking fire grate and is sloping formula, and fire grate is a rectangle.Upper and lower fire grate is fixed, is fixed on the internal protecting wall of burner hearth, and middle fire grate is portable, and it can be provided with swing mechanism in the bottom of mobile fire grate along rigid grate slip down.
The described second grate furnace grate is set up in parallel a side of rigid grate under first row, and it is for singly putting sloping formula.First row and the second grate furnace grate are set to 1: 100 the gradient;
Described the 3rd grate furnace grate is made of rectangle+semicircle, and it is convertible for keeping flat.Centre position at fire grate is provided with rotating shaft, and an end of rotating shaft is arranged on the inboard wall of burner hearth, and the other end of rotating shaft passes the furnace wall, and to stretch out stove outer and be connected with and move handle, moves handle and make the fire grate upset, and lime-ash falls into automatically except that in the lime-ash case.
The root both sides that described swing mechanism is included in mobile fire grate are arranged with link rod, the lower end of link rod is connected with a fixed axis, this axle is connect by a fork ear oscillating deck hinge, two ends in the bottom of oscillating deck are provided with two turning cylinders, a turning cylinder is arranged on the stove inwall, another turning cylinder passes the furnace wall and stretches out outside the stove, and on axle, be provided with and move handle, pulling handle can drive mobile fire grate and slide to descending slope along rigid grate, rely on the drop and the gravity of coal to give the combustion chamber stoking automatically, its landslide stroke is the 150-200 millimeter.
The left side square space of described main chamber is the space that preheating, intensification are carried out in cold coal seam.Be provided with the semicircle steel plate that supports furnace outer wall in this space.
Be provided with the poly-fire tube group that 9 steel pipes are circular layout on main chamber top, each poly-fire tube is made of the seamless steel pipe of 60 * 230 millimeters of Φ.
Described first superconduction is rapidly heated, and to hold water body be that water body is held in the ellipse sealing, has been provided with concentrated superconduction nest of tubes on the counter-fire face that holds water body.
Described second superconduction is rapidly heated, and to hold water body be the ring-like water trapping layer of upper of furnace body, disperses to be provided with the superconduction nest of tubes holding on the water body counter-fire face.
Described superconduction nest of tubes is the combination of one group of column type sealed steel pipe, the superconduction liquid of packing into after each superconducting pipe inner chamber vacuumizes.Each superconducting pipe 1/3 pipe range is exposed at and holds the outside that the water body counter-fire is faced the wall and meditated, and all the other pipe ranges are inserted in the water that holds in the water body.
The profile of described superconducting pipe can be rectangle or polygon sealed tube.
Advantage of the present utility model, good effect:
One, the configuration design novelty of this boiler:
1, this boiler is made of body of heater and automatic coal breakage casing, the double-walled column type that its body of heater is made up of inside and outside wall, and the profile of coal breakage case is leant on body for the side automatically;
2, be provided with automatic coal breakage case and shutter in the body of heater left side;
3, the fire grate of main chamber is provided with three rows, the first grate furnace grate is stacked together by three layers of fire grate of upper, middle and lower and is sloping formula, and upper and lower fire grate is fixed, and the centre is removable, and swing mechanism is arranged in the bottom of mobile fire grate, utilize swing mechanism to carry coal to main chamber easily;
4, simultaneously, be provided with in the left side of main chamber cold coal preheating, intensification space, can make the preheating step by step of cold coal, intensification, accelerate coal-fired burning;
5, be provided with below the fire grate except that the lime-ash case, pour in the lime-ash case by the coal ash slag of upset fire grate hadle after-flame, convenient, fast.
Two, the thermal efficiency height of boiler.
To hold water body be ellipse because first is rapidly heated, second is rapidly heated, and to hold water body be ring-like, two are held the flue that water body constitutes contraction-expansion, helping high temperature gas flow like this forms in burner hearth and gathers, the superconduction nest of tubes is set again in this flue, helps fuel particle fully to burn and the abundant exchange of heat, make water in the stove content water body through the heating that heats up once more of superconducting pipe colony, realize that the temperature that layering, segmentation, classification are burnt repeatedly increases progressively, and helps improving the thermal efficiency of boiler.
Three, owing to be provided with poly-fire tube group on the top of main chamber.Its setting is when the cold and hot air in the burner hearth is carried out convective exchange, becomes powerful poly-fire stream after making flame that burner hearth laxes by poly-fire tube group, and the burning velocity of Jia Daing effectively helps the dish liter of furnace temperature.
Four, be provided with automatic coal breakage case and remove the lime-ash case automatically in this boiler, utilize a high position, gravity to give main burning coal supply automatically, with to the coal ash slag of after-flame by the upset fire grate handle pour into automatically in the lime-ash case, alleviated manual labor greatly, remain at the vigorous burning things which may cause a fire disaster burning of boiler simultaneously, compared with similar products, save coal more than 45%, the thermal efficiency improves more than 50%, more than outlet water temperature 90 degree.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a boiler contour structures schematic diagram;
Fig. 3 is the grate structure schematic diagram of main chamber;
Fig. 4 is the swing mechanism schematic diagram of mobile fire grate;
Fig. 5 is for removing the structural representation of lime-ash casing;
Fig. 6 is that the B of Fig. 5 is to schematic diagram.
Wherein
1, body of heater 2, hot-water line 3, atmospheric communicating pipe 4, temperature tube 5, cold water inlet pipe 6, blow-off pipe 7, flue 8,9, dedusting hole 10, burning zone is observed door 11, automatic coal breakage case 12, remove lime-ash case 13, shutter 14, fire door handle 15, main chamber 16, poly-fire tube group 17, first superconduction is rapidly heated and holds water body 18,19, water inlet pipe 20, outlet pipe 21, second superconduction is rapidly heated and holds water body 22, superconducting pipe 23, can stir fire grate 24, upset fire grate handle connecting shaft 25, the second grate furnace grate 26, fixedly lower fire grate 27, mobile fire grate 28, fixedly upper furnace grate 29, swing handle 30, sewer 31, middle water channel 32, water- supply line 34,35,36 rigid grate supporting plates 37, go out lime-ash case slideway 38, furnace outer wall 39, stove inwall 40, automatic coal breakage case lid 41, link rod 42, fork ear oscillating deck 43, axle.
The specific embodiment
In conjunction with Figure of description 1-6 structure of the present utility model is specified:
Boiler of the present utility model is the vertical boiler (seeing Figure of description 1-2) that is made of rectangular post+column type that the metal material weldering is made.Body of heater 1 is that the double-walled that is become by welded steel plate is cylindrical, and being rectangular column type in the left side of body of heater 1 is automatic coal breakage case 11, and coal breakage case 11 tops are provided with automatic coal breakage lid 40 automatically, and it is that the coal that acts as a fuel stores (being mainly diffusing coal) of using.Long 555 millimeters of the maximum outside diameter of body of heater, wide 400 millimeters, high 1206 millimeters.Be provided with hot-water outlet pipe 2, normal pressure atmospheric communicating pipe 3, temperature tube 4 and smokejack 7 on the top of body of heater 1.The purpose of normal pressure communicating pipe 3 is set, is to ensure the normal operation of boiler.Because boiler of the present utility model is a normal-pressure boiler, boiler can be discharged by atmospheric communicating pipe 3 at any time at the normal steam that produces in service, guarantees the safe operation of boiler, and this is vital.In case blocking appears in the pipeline in the boiler, current are obstructed, and boiler will produce pressure, and when pressure surpassed certain value, this high-temperature vapor was very serious to the harm that boiler caused.Certainly, be protection boiler operatiopn safety, normal pressure atmospheric communicating pipe 3 is provided with safety valve (accompanying drawing does not show).
Body of heater 1 is the double-walled body of heater that is become by welded steel plate, between furnace outer wall 38 and the stove inwall 39 the folder water cavity is set, this folder water cavity is divided into according to the size and the high and low position of boiler: at the water-supply line 30 of bottom of furnace body, the middle water channel 31 at body of heater middle part and the water-supply line 32 of upper of furnace body, upper, middle and lower water channel the 30,30, the 32nd provides the main thoroughfare that is subjected to hot water for boiler, it with hold water body 17,21, hot-water outlet pipe 2, atmospheric communicating pipe 3, temperature tube 4, advance cold water pipe 5, blow-off pipe 6 is connected, the folder water cavity of boiler also has the effect of preheating water simultaneously.
Swing mechanism is such: the root both sides at mobile fire grate 27 are arranged with link rod 41, the lower end of link rod 41 is provided with fixed axis 43, this axle 43 is connect by a fork ear oscillating deck 42 hinges, the two ends, bottom of oscillating deck 42 are provided with turning cylinder, one end turning cylinder is arranged on the stove inwall, the other end passes the furnace wall and stretches out outside the stove, and on axle, be provided with and move handle 29, pull handle 29 can drive mobile fire grate 27 along rigid grate 26 to lower slider, bunker coal is provided for combustion chamber 15, its stroke is designed to the 150-200 millimeter.The top rigid grate 28 that the first grate furnace grate is set is that the coal to automatic coal breakage case 11 rises and does supporting role, and is the removable space of mobile creation of middle mobile fire grate 27, and mobile fire grate 27 is delivered to coal in the combustion chamber like a cork in the middle of making.The rigid grate 26 of the first row bottom is being done the sliding effect of holder for the slip of middle transmission fire grate 27 plays.
The second grate furnace grate 25 is set up in parallel the side at first row's rigid grate 26, and the second grate furnace grate 25 is designed to singly put sloping formula, and it and the following rigid grate 26 of first row are set to 1: 100 gradient; The second grate furnace grate 25 and the fire grate 23 that overturns together play and support burning of coal and provide air by ventilation blower.
The 3rd grate furnace grate is designed to rectangle+semicircular turning fire grate 23, and it is convertible for keeping flat.The centre position of upset fire grate 23 is provided with rotating shaft 24, one end of rotating shaft 24 is arranged on the stove inwall 39, the other end of rotating shaft 24 passes the furnace wall, and to stretch out stove outer and be connected with and move handle 29, move handle 29 can make the upset fire grate 23 upset, the lime-ash of after-flame can be fallen into automatically except that in the lime-ash case 12, easy to operate, quick.Be provided with shutter 13 and handle 14 except that lime-ash case 12 front plugs, shutter 13 is designed to 200 * 120 millimeters, in order to guarantee the air stream under the boiler spontaneous firing state.
Be provided with into cold water pipe 5 and blow-off pipe 6 in body of heater 1 bottom, the position of blow-off pipe 6 is lower than into cold water pipe 5 purposes, is convenient to make the dirt of water-supply line 30, middle water channel 31 and top water channel 32 in the boiler interlayer successfully to get rid of outside the stove.
Second superconduction is rapidly heated, and to hold water body 21 are annular solids of this upper of furnace body, and there is a smokejack 7 at the center.Disperse to be provided with two circle superconducting pipes 22 at appearance water body 21 counter-fire faces.This holds water body 21 and links to each other with water-supply line 32.The profile of described superconducting pipe 22 can be rectangle or polygon sealed tube.
For improving the heat transfer efficiency of boiler, the body of heater position of corresponding superconduction nest of tubes is provided with ash disposal hole 8,9.Boiler operatiopn will be carried out dedusting to boiler inner wall 39 and superconduction tube wall 22 every 7-10 days, and the purpose of dedusting not only improves the thermal efficiency height of boiler, realize energy-conservation, but also service life of prolonged boiler.
Claims (8)
1. an atmospheric vertical super conduction quick heating boiler comprises by body of heater and automatic coal breakage casing, the column type that body of heater becomes inside and outside wall to form by welded steel plate, the left side of body of heater is welded into the automatic coal breakage case of square column type by steel plate, be provided with hot-water outlet pipe, normal pressure atmospheric communicating pipe, temperature tube and smokejack at the top of body of heater, the middle and upper part of body of heater is provided with the dedusting hole, the body of heater bottom is provided with into cold water pipe and blow-off pipe, and the position of blow-off pipe is lower than into cold water pipe;
It is characterized in that:
Between the outer wall of body of heater and the stove inwall water supply chamber is set, the water supply chamber is divided into sewer from top to bottom, middle water channel and water-supply line; Bottom of furnace body is provided with and removes the lime-ash case automatically, remove lime-ash case front and be provided with air door, remove the lime-ash upper box part and be provided with three grate furnace grates, be provided with main chamber on fire grate top, poly-fire tube group is arranged at main chamber top, and first, second super pipe appearance water body that is rapidly heated is set in the burner hearth on poly-fire tube group top; The first surpass pipe and be rapidly heated and hold the water body both sides and be symmetrically arranged with water inlet pipe, water inlet pipe is connected with middle water channel, is provided with the superconduction nest of tubes on super pipe is rapidly heated appearance water body counter-fire face;
Described three grate furnace grates are set to: the first grate furnace grate is stacked together by the upper, middle and lower-ranking fire grate and is sloping formula, fire grate is a rectangle, upper and lower fire grate is fixed, be fixed on the inwall of burner hearth, middle fire grate is portable, it can be along rigid grate slip down, and the bottom of mobile fire grate is provided with swing mechanism;
The described second grate furnace grate is arranged in first row side of rigid grate down, and for singly putting sloping formula, the first grate furnace grate and the second grate furnace grate are set to 1: 100 gradient;
Described the 3rd grate furnace grate be rectangular+semicircle constitute, it is to keep flat convertiblely, the centre position of fire grate is provided with rotating shaft, one end of rotating shaft is arranged on the inboard wall of burner hearth, the other end passes the furnace wall, and to stretch out stove outer and be connected with and move handle, moves handle upset fire grate, and lime-ash falls into automatically except that in the lime-ash case.
2. atmospheric vertical super conduction quick heating boiler according to claim 1, the root both sides that the swing mechanism that it is characterized in that described mobile fire grate is included in mobile fire grate are arranged with link rod, the lower end of link rod is connected with a rotating shaft, this rotating shaft is connect by a fork ear oscillating deck hinge, two ends in the oscillating deck bottom are provided with two turning cylinders, the one turning cylinder is arranged on the stove inwall, another turning cylinder passes the furnace wall and stretches out outside the stove, and on its axle, be provided with and move handle, pulling handle can drive mobile fire grate and slide to descending slope, rely on the drop and the gravity of coal to give the combustion chamber stoking automatically, its landslide stroke is the 150-200 millimeter.
3. atmospheric vertical super conduction quick heating boiler according to claim 1, the leftward space that it is characterized in that described main chamber is coal seam preheating, intensification space, is provided with the semicircle steel plate that supports furnace outer wall in this space.
4. atmospheric vertical super conduction quick heating boiler according to claim 1 is characterized in that main chamber top is provided with the poly-fire tube group that 9 steel pipes are circular layout, and each poly-fire tube is made of the seamless steel pipe of 60 * 230 millimeters of Ф.
5. atmospheric vertical super conduction quick heating boiler according to claim 1, it is characterized in that being rapidly heated described first superconduction, to hold water body be the ellipse seal, concentrates to be provided with superconducting pipe on the counter-fire face that holds water body.
6. atmospheric vertical super conduction quick heating boiler according to claim 1, it is characterized in that described second superconduction is rapidly heated holds the ring-like layer that water body is a upper boiler, disperses to be provided with superconducting pipe holding on the water body counter-fire face.
7. according to claim 4 or 5 described atmospheric vertical super conduction quick heating boilers, it is characterized in that described superconducting pipe is one group of column type sealed steel pipe, the superconduction liquid of packing into after tube cavity vacuumizes, each superconducting pipe 1/3 pipe range is exposed at and holds the outside that the water body counter-fire is faced the wall and meditated, and all the other pipe ranges are inserted in the water that holds in the water body.
8. atmospheric vertical super conduction quick heating boiler according to claim 5 is characterized in that the profile of described superconducting pipe can be rectangle or polygon sealed tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201275346U CN201096406Y (en) | 2007-08-07 | 2007-08-07 | Normal pressure vertical type superconductive rapid heating boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201275346U CN201096406Y (en) | 2007-08-07 | 2007-08-07 | Normal pressure vertical type superconductive rapid heating boiler |
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| Publication Number | Publication Date |
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| CN201096406Y true CN201096406Y (en) | 2008-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201275346U Expired - Fee Related CN201096406Y (en) | 2007-08-07 | 2007-08-07 | Normal pressure vertical type superconductive rapid heating boiler |
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| Country | Link |
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| CN (1) | CN201096406Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102803445A (en) * | 2010-01-19 | 2012-11-28 | 零点清洁科技公司 | Downdraft gasifier with improved stability |
-
2007
- 2007-08-07 CN CNU2007201275346U patent/CN201096406Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102803445A (en) * | 2010-01-19 | 2012-11-28 | 零点清洁科技公司 | Downdraft gasifier with improved stability |
| CN102803445B (en) * | 2010-01-19 | 2015-05-20 | 零点清洁科技公司 | Downdraft gasifier with improved stability |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 125199 city of Liaoning Province Hing City East eight mile road west of the city to do 102 in superconducting boiler factory Patentee after: Li Yuchen Address before: 125700 Xingcheng city of Liaoning Province Xinghai Road (red building opposite) Xingcheng City superconductivity boiler factory Patentee before: Li Yuchen |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080806 Termination date: 20150807 |
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| EXPY | Termination of patent right or utility model |