CN208504370U - A kind of gas-fired Boiler System of low nitrogen condensing twin furnace - Google Patents
A kind of gas-fired Boiler System of low nitrogen condensing twin furnace Download PDFInfo
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- CN208504370U CN208504370U CN201820983759.XU CN201820983759U CN208504370U CN 208504370 U CN208504370 U CN 208504370U CN 201820983759 U CN201820983759 U CN 201820983759U CN 208504370 U CN208504370 U CN 208504370U
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- low nitrogen
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Abstract
The utility model provides a kind of gas-fired Boiler System of low nitrogen condensing twin furnace, belongs to technical field of environment protection equipment.It solves the problems such as existing gas fired-boiler is poor using energy-saving effect.The utility model includes burner hearth, convection cell, explosion vent apparatus, waste heat recovering energy conserving device and low nitrogen combustion apparatus, convection cell internal upper part and lower part are correspondingly arranged on upper drum and lower drum, convection bank is connected between upper drum and lower drum, burner hearth includes main furnace chamber and secondary-furnace spaced apart from each other, a main burner and auxiliary burner are correspondingly arranged at main furnace chamber and secondary-furnace, main furnace chamber is connected to convection cell with secondary-furnace, explosion vent apparatus is arranged on the outer wall of main furnace chamber, waste heat recovering energy conserving device is docked with convection cell for flue gas waste heat recovery to be discharged, low nitrogen combustion apparatus can make full combustion of fuel.The utility model can solve boiler efficiency problem caused by customer charge fluctuation greatly.
Description
Technical field
The utility model belongs to technical field of environment protection equipment, and in particular to a kind of gas fired-boiler of low nitrogen condensing twin furnace
System.
Background technique
With the high speed development of social economy, process equipment of the boiler as production thermal energy and power, in modern industry, electricity
Generally used in power and people's lives, and gas fired-boiler it is high-quality with it, it is environmentally friendly, cleaning the characteristics of meet people to environment, peace
Entirely, the requirement automated, so many engineerings have used gas fired-boiler as its heating equipment.
Gas fired-boiler includes fuel gas combustion equipment and boiler body two systems.Fuel gas combustion equipment refers mainly to burner hearth and combustion
Burner also includes other equipment related with combustion process, its main function is by a certain number of fuel gas and air
It is passed through in combustion apparatus, chemical energy is changed by thermal energy by the burning of fuel gas, lasting thermal energy is provided to boiler body.
Boiler body is exactly to convert the water to water vapour by the thermal energy that combustion apparatus provides, and becomes certain amount and quality (pressure
Power and humidity) steam.Entire boiler for producing process is exactly to be sent into a certain number of fuel gas and the air of respective numbers
Burning in furnace, issued heat transfer water supply of burning, the water for vaporizing water under level pressure and forming certain pressure and temperature steam
Vapour.
However there are some problems in existing boiler in use: 1, since national boiler exhaust gas discharge more and more tighter,
The disposal of pollutants problem of its nitrogen oxides, affects its use scope；2, energy-saving effect is poor, and the thermal efficiency is low；3, due to various originals
Cause, the frequent generation of gas fired-boiler explosion accident, it not only causes largely to lose in economic aspect, serious to make people in body and mind
Even life is all on the hazard；4, boiler automatic level is low, is not able to satisfy the purpose of energy-saving and emission-reduction.
Utility model content
The purpose of this utility model is to be directed to the above problem present in above-mentioned burning boiler, and propose a kind of automation journey
Degree height is able to achieve energy-saving and emission-reduction and uses safe boiler system.
The purpose of this utility model can be realized by the following technical scheme:
A kind of gas-fired Boiler System of low nitrogen condensing twin furnace, which is characterized in that it includes burner hearth, convection cell, explosion-proof
Door gear, waste heat recovering energy conserving device and low nitrogen combustion apparatus, convection cell internal upper part and lower part be correspondingly arranged on upper drum and under
Drum is connected with convection bank between upper drum and lower drum, burner hearth includes main furnace chamber and secondary-furnace spaced apart from each other, main
A main burner and auxiliary burner are correspondingly arranged at burner hearth and secondary-furnace, main furnace chamber is connected to convection cell with secondary-furnace, is prevented
Quick-fried door gear is arranged on the outer wall of main furnace chamber, and waste heat recovering energy conserving device is docked with convection cell for fume afterheat to be discharged
Recycling, low nitrogen combustion apparatus can make full combustion of fuel.
Preferably, the gas-fired Boiler System further includes controlling the control system of main furnace chamber and secondary-furnace switch operating.
Preferably, full film water cold wall structure is provided on the inner wall of the main furnace chamber and secondary-furnace.
Preferably, the gas-fired Boiler System further includes surface blow-off mechanism, and the surface blow-off mechanism includes setting
The drain valve of the energy continuous blowdown on upper drum and lower drum water side is set, the drain valve is adjustable.
Preferably, the explosion vent apparatus includes the explosion proof door for being mounted on main furnace chamber tail end, and the explosion proof door includes
The dynamic clamping head and quiet clamping head of door body, cover board and cover board, bleeder port is provided in door body, and cover board setting can keep off bleeder port in door body
Firmly, cover board can under pressure and far from door body, after pressure releases can under dynamic clamping head and quiet clamping head effect again in conjunction with door body and
Block the bleeder port of door body.When burner since maloperation or other reasons cause furnace puff, and the setting of explosion proof door can be with
Detonation power (pressure) is discharged and reduced, to have the function that protect burner hearth.Bleeder port penetrates through door body, each bleeder port
Inner end size is greater than outer end size.When initial, reset spring is in compressive state.
Preferably, the cover board and the embedded setting of door body, are arranged at intervals with two inserts on cover board, right in door body
With recess is provided at position, insert is located in corresponding recess.
Preferably, the dynamic clamping head and quiet clamping head includes four screw rods being arranged at intervals in door body, and screw rod is vertical with door body
Setting, the connecting pin of each screw rod are connect after sliding through cover board with door body, and the screw cap end of four screw rods is fixed with first flange, lid
It is provided on plate and is arranged between cover board and first flange and corresponding spiral shell with one-to-one four casings of four screw rods, casing
Bar coaxial arrangement, one end of casing are fixedly connected with cover board, and reset spring, cover board and set are provided between cover board and first flange
The opposite screw rod of pipe energy moves back and forth, and the length of casing is less than the distance between cover board and first flange.
Preferably, the reset spring is provided with four, corresponds with each screw rod, and reset spring is located in casing,
One end is connect with cover board, the other end and flanged joint.
Preferably, the door body includes ontology and the flame-observing hole that is arranged in door body, is provided with seamless pipe at flame-observing hole,
The outer end of door body is provided with the visor being prepared by high-temperature material.
Preferably, the ontology includes annular outer ring plate and the refractory concrete in annular outer ring plate, and fire resisting is mixed
It is provided with hook nail in solidifying soil, ontology, which is located at seamless pipe, is provided with insulating layer.
Preferably, the waste heat recovering energy conserving device includes pure water system, water inlet pipe, outlet pipe and is arranged in upper drum
The efficient condenser of tail portion, convection cell are provided with smoke discharging pipe, and smoke discharging pipe is connect by pipeline communicating part with efficient condenser,
One end of water inlet pipe is connect with efficient condenser, and the other end is connect with the raw water tank in pure water system, one end of outlet pipe and height
Imitate condenser connection, the water tank connection of the other end and pure water system.The water come out from outlet pipe is hot water, can be used as life
Apply flexibly hot water treatment.Flue gas goes out the external world using fume treatment heel row after efficient condenser condenses.
Preferably, the pipeline communicating part includes the first butt tube and the second butt tube, one end point of two butt tubes
It is not connected to smoke discharging pipe, the other end is corresponding to be connect with the inlet and outlet of efficient condenser, the bending tubes end of the first butt tube
And second butt tube smoke end at be provided with a valve, be located on smoke discharging pipe the first butt tube bending tubes end and second pair
Valve there are two being also provided between the smoke end of adapter tube.
Preferably, the low nitrogen combustion apparatus includes the first low nitrogen burning being correspondingly arranged in main furnace chamber and secondary-furnace
Mechanism and the second low nitrogen burning mechanism, the first low nitrogen burning mechanism include the first of the first admission line and conveying air
Air intake passage, the first air intake passage and the first admission line lead to main burner, and the first admission line is set at main burner
It is equipped with proportioning valve, the second low nitrogen burning mechanism includes the second air intake passage of the second admission line and conveying air, and described is low
Nitrogen combustion apparatus further includes Heat Room, and air-introduced machine is provided at convection cell, is provided with condensing heat exchanger in Heat Room, air-introduced machine with
Heat Room connection, above-mentioned smoke discharging pipe are connected to Heat Room.
Preferably, it is provided with smoke reflux device at the air-introduced machine mouth, which can be by smoke backflow
To the first admission line or the second admission line.Flue gas recirculation access port access port and first is arranged in air-introduced machine exit
Admission line or the connection of the second admission line.Valve is provided at flue gas recirculation access port.
Compared with prior art, the utility model include burner hearth, convection cell, explosion vent apparatus, waste heat recovering energy conserving device,
Low nitrogen combustion apparatus and control system etc., the application of twin furnace advantageously account for the user place very big with gas load fluctuation, low
The auxiliary burner that smaller power is opened when load, opens the main burner of relatively high power, to solve customer charge when load is normal
Boiler efficiency problem caused by fluctuation is big；In order to control the water quality of saturated water in drum, drum water side away from liquid level it is certain away from
Blowdown valve from one continuous blowdown of setting, to meet the requirement of water quality in drum；Provided with explosion vent apparatus, main burning is prevented
Device maloperation or it is other due to cause furnace puff, the setting of explosion vent apparatus can be discharged and be dropped to detonation power
It is low, to have the function that protect burner hearth；Flue gas recirculation reduces the discharge for the thermal NO that combustion process generates, favorably
In reducing fuel combustion temperature, nitrogen oxides is reduced with this.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the overhead sectional view of Fig. 1；
Fig. 3 is the left view cross-sectional view of Fig. 1；
Fig. 4 is the explosion vent apparatus structural schematic diagram of the utility model；
Fig. 5 is A-A sectional view in Fig. 4；
Fig. 6 is enlarged drawing at A in Fig. 5；
Fig. 7 is the structural schematic diagram of the utility model waste heat recovering energy conserving device.
In figure, the 1, first butt tube；2, the second butt tube；3, upper drum；4, lower drum；5, convection bank；6, main furnace chamber；
7, secondary-furnace；8, main burner；9, auxiliary burner；10, door body；11, cover board；12, bleeder port；13, insert；14, screw rod；
15, first flange；16, casing；17, reset spring；18, seamless pipe；19, visor；20, refractory concrete；21, hook nail；22, it protects
Warm layer；23, plate；24, second flange；25, water inlet pipe；26, outlet pipe；27, efficient condenser；28, smoke discharging pipe；29, right
Flow chamber.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
As shown in Fig. 1-Fig. 7, a kind of gas-fired Boiler System of low nitrogen condensing twin furnace provided by the utility model, it is wrapped
Include burner hearth, convection cell 29, explosion vent apparatus, waste heat recovering energy conserving device and low nitrogen combustion apparatus.
29 internal upper part of convection cell and lower part are correspondingly arranged on upper drum 3 and lower drum 4, connect between upper drum 3 and lower drum 4
It connects and is provided with convection bank 5, burner hearth includes main furnace chamber 6 and secondary-furnace 7 spaced apart from each other.Correspondence is set at main furnace chamber 6 and secondary-furnace 7
It is equipped with a main burner 8 and auxiliary burner 9, main furnace chamber 6 is connected to convection cell 29 with secondary-furnace 7.Explosion vent apparatus setting exists
On the outer wall of main furnace chamber 6, waste heat recovering energy conserving device is docked with convection cell 29 for flue gas waste heat recovery to be discharged, low nitrogen combustion
Full combustion of fuel can be made by burning device.
Full film water cold wall structure is provided on the inner wall of main furnace chamber 6 and secondary-furnace 7.
Gas-fired Boiler System further includes surface blow-off mechanism, the surface blow-off mechanism include setting in upper drum 3 and
The drain valve of energy continuous blowdown on 4 water side of lower drum, the drain valve are adjustable.
The explosion vent apparatus of the utility model includes the explosion proof door for being mounted on 6 tail end of main furnace chamber, and the explosion proof door includes
The dynamic clamping head and quiet clamping head of door body 10, cover board 11 and cover board 11, bleeder port 12 is provided in door body 10, and cover board 11 is arranged in door body 10
Bleeder port 12 can be blocked, cover board 11 can be made under pressure and far from door body 10 after pressure releases in dynamic clamping head and quiet clamping head
With it is lower and with door body 10 in conjunction with and block the bleeder port 12 of door body 10.When burner since maloperation or other reasons cause burner hearth
Detonation, and the setting of explosion proof door can be discharged and be reduced to detonation power (pressure), to have the function that protect burner hearth.It lets out
Stomata 12 penetrates through door body 10, and the inner end size of each bleeder port 12 is greater than outer end size.Cover board 11 and the embedded setting of door body 10, lid
It is arranged at intervals with two inserts 13 on plate 11, to recess is provided at position in door body 10, it is recessed that insert 13 is located at correspondence
In mouthful.
Above-mentioned dynamic clamping head and quiet clamping head includes two screw rods 14 being arranged at intervals in door body 10, and screw rod 14 is vertical with door body 10 to be set
It sets, the connecting pin of each screw rod 14 is connect after sliding through cover board 11 with door body 10, and the screw cap end of four screw rods 14 is fixed with first
Flange 15, be provided on cover board 11 with four screw rods, 14 one-to-one four casings 16, the setting of casing 16 is in cover board 11 and the
Between one flange 15 and corresponding screw rod 14 is coaxially disposed, and one end of casing 16 is fixedly connected with cover board 11, cover board 11 and first
Reset spring 17 is provided between flange 15, opposite screw rod 14 moves back and forth cover board 11 with 16 energy of casing, and the length of casing 16 is small
In the distance between cover board 11 and first flange 15.
Reset spring 17 is provided with four, and each reset spring 17 is corresponded with each screw rod 14, and reset spring 17 is located at set
In pipe 16, one end is connect with cover board 11, the other end and flanged joint.Door body 10 includes ontology and the sight being arranged in door body 10
Fire hole is provided with seamless pipe 18 at flame-observing hole, and the outer end of door body 10 is provided with the visor 19 being prepared by high-temperature material.
Ontology includes annular outer ring plate and the refractory concrete 20 in annular outer ring plate, setting in refractory concrete 20
There is hook nail 21, ontology, which is located at seamless pipe 18, is provided with insulating layer 22.What ontology was connect with cover board 11 is provided with annular on one side
Plate 23, plate 23 are fixedly connected with the second flange 24 being arranged on outer girth sheets.One end of each screw rod 14 is connect with plate 23.
The waste heat recovering energy conserving device of the utility model includes pure water system, water inlet pipe 25, outlet pipe 26 and is arranged upper
The efficient condenser 27 of 3 tail portion of drum, convection cell 29 are provided with smoke discharging pipe 28, and smoke discharging pipe 28 passes through pipeline communicating part and height
It imitates condenser 27 to connect, one end of water inlet pipe 25 is connect with efficient condenser 27, and the raw water tank in the other end and pure water system connects
It connects, one end of outlet pipe 26 is connect with efficient condenser 27, the water tank connection of the other end and pure water system.From outlet pipe 26
Water out is hot water, can be used as hot water for life processing.Flue gas is after the condensation of efficient condenser 27 using fume treatment
Heel row goes out the external world.
Pipeline communicating part include the first butt tube 1 and the second butt tube 2, one end of two butt tubes respectively with smoke discharging pipe
28 connections, the corresponding inlet and outlet with efficient condenser 27 of the other end connect, the bending tubes end of the first butt tube 1 and second pair
It is provided with a valve at the smoke end of adapter tube 2, the bending tubes end and the second butt tube of the first butt tube 1 are located on smoke discharging pipe 28
Valve there are two being also provided between 2 smoke end.
Low nitrogen combustion apparatus includes the first low nitrogen burning mechanism and second being correspondingly arranged in main furnace chamber 6 and secondary-furnace 7
Low nitrogen burning mechanism, the first low nitrogen burning mechanism include the first air intake passage of the first admission line and conveying air,
First air intake passage and the first admission line lead to main burner 8, and the first admission line is arranged proportional at main burner 8
Valve, the second low nitrogen burning mechanism include the second air intake passage of the second admission line and conveying air, the low nitrogen burning dress
Setting further includes Heat Room, and air-introduced machine is provided at convection cell 29, condensing heat exchanger, air-introduced machine and Heat Room are provided in Heat Room
Connection, above-mentioned smoke discharging pipe 28 are connected to Heat Room.
It is provided with smoke reflux device at air-introduced machine mouth, which can be by smoke backflow to the first admission line
Or second admission line.The flue gas recirculation access port access port and the first admission line or the is arranged in air-introduced machine exit
The connection of two admission lines.Valve is provided at flue gas recirculation access port.
The utility model further includes the control system for controlling main furnace chamber 6 and 7 switch operating of secondary-furnace.The control system includes
Controller, controller are connect with main burner 8 with the switch of auxiliary burner 9, and the auxiliary burner of smaller power is opened when underload
9, the main burner 8 of relatively high power is opened when load is normal, to solve the problems, such as boiler efficiency caused by customer charge fluctuation is big.
It should be understood that in claims, specification of the utility model, all " including ... " should be understood as out
The meaning of formula is put, that is, its meaning is equal to " at least containing ... ", but should not be understood as enclosed meaning, i.e. its meaning
It should not be construed " only including ... ".
Those skilled in the art of the present invention can do described specific embodiment various
The similar mode of modify or supplement or adopt substitutes, but without departing from the spirit of the present application or surmounts appended right and want
Seek range defined in book.
Claims (10)
1. a kind of gas-fired Boiler System of low nitrogen condensing twin furnace, which is characterized in that it includes burner hearth, convection cell, explosion proof door
Device, waste heat recovering energy conserving device and low nitrogen combustion apparatus, convection cell internal upper part and lower part are correspondingly arranged on upper drum and cook
Cylinder, is connected with convection bank, burner hearth includes main furnace chamber and secondary-furnace spaced apart from each other, main furnace between upper drum and lower drum
A main burner and auxiliary burner are correspondingly arranged at thorax and secondary-furnace, main furnace chamber is connected to convection cell with secondary-furnace, explosion-proof
Door gear is arranged on the outer wall of main furnace chamber, and waste heat recovering energy conserving device is docked with convection cell for returning to fume afterheat to be discharged
It receives, low nitrogen combustion apparatus can make full combustion of fuel.
2. a kind of gas-fired Boiler System of low nitrogen condensing twin furnace according to claim 1, which is characterized in that described
Gas-fired Boiler System further includes controlling the control system of main furnace chamber and secondary-furnace switch operating.
3. a kind of gas-fired Boiler System of low nitrogen condensing twin furnace according to claim 1, which is characterized in that described
Gas-fired Boiler System further includes surface blow-off mechanism, and the surface blow-off mechanism includes being arranged in upper drum and lower drum water side
On energy continuous blowdown drain valve, the drain valve is adjustable.
4. a kind of gas-fired Boiler System of low nitrogen condensing twin furnace according to claim 1, which is characterized in that described
Explosion vent apparatus includes the explosion proof door for being mounted on main furnace chamber tail end, and the explosion proof door includes the elasticity of door body, cover board and cover board
Return unit is provided with bleeder port in door body, and cover board setting can block bleeder port in door body, cover board can under pressure and
Far from door body, the bleeder port of door body can be blocked after pressure releases in conjunction with door body again under dynamic clamping head and quiet clamping head effect.
5. a kind of gas-fired Boiler System of low nitrogen condensing twin furnace according to claim 4, which is characterized in that described
Cover board and the embedded setting of door body, are arranged at intervals with two inserts on cover board, embedding to being provided with recess at position in door body
Enter body to be located in corresponding recess.
6. a kind of gas-fired Boiler System of low nitrogen condensing twin furnace according to claim 4, which is characterized in that described
Dynamic clamping head and quiet clamping head includes four screw rods being arranged at intervals in door body, and screw rod is vertically arranged with door body, and the connecting pin of each screw rod is sliding
Dynamic to connect after cover board with door body, the screw cap end of four screw rods is fixed with first flange, is provided on cover board and four screw rods
One-to-one four casings, casing is arranged between cover board and first flange and corresponding screw coaxial is arranged, and the one of casing
End is fixedly connected with cover board, and reset spring is provided between cover board and first flange, and cover board is backhauled with casing energy screw rod relatively
Dynamic, the length of casing is less than the distance between cover board and first flange.
7. a kind of gas-fired Boiler System of low nitrogen condensing twin furnace according to claim 4, which is characterized in that described
Door body includes ontology and the flame-observing hole that is arranged in door body, is provided with seamless pipe at flame-observing hole, the outer end of door body is provided with by height
The visor that adiabator is prepared.
8. a kind of gas-fired Boiler System of low nitrogen condensing twin furnace according to claim 1, which is characterized in that described
Waste heat recovering energy conserving device includes pure water system, water inlet pipe, outlet pipe and the efficient condenser that upper drum tail portion is arranged in, convection current
Room is provided with smoke discharging pipe, and smoke discharging pipe is connect by pipeline communicating part with efficient condenser, one end of water inlet pipe with it is efficient cold
Condenser connection, the other end connect with the raw water tank in pure water system, and one end of outlet pipe is connect with efficient condenser, the other end and
The water tank of pure water system connects.
9. a kind of gas-fired Boiler System of low nitrogen condensing twin furnace according to claim 8, which is characterized in that described
Pipeline communicating part includes the first butt tube and the second butt tube, and one end of two butt tubes is connected to smoke discharging pipe respectively, another
Hold it is corresponding connect with the inlet and outlet of efficient condenser, at the smoke end of the bending tubes end of the first butt tube and the second butt tube
It is provided with a valve, is located between the bending tubes end of the first butt tube and the smoke end of the second butt tube on smoke discharging pipe and is also provided with
There are two valves.
10. a kind of gas-fired Boiler System of low nitrogen condensing twin furnace according to claim 8, which is characterized in that described
Low nitrogen combustion apparatus include the first low nitrogen burning mechanism being correspondingly arranged in main furnace chamber and secondary-furnace and the second low nitrogen burning
Mechanism, the first low nitrogen burning mechanism include the first air intake passage of the first admission line and conveying air, the first air inlet
Channel and the first admission line lead to main burner, and the first admission line is provided with proportioning valve at main burner, and second is low
Nitrogen combustion mechanism includes the second air intake passage of the second admission line and conveying air, and the low nitrogen combustion apparatus further includes changing
Hot cell is provided with air-introduced machine at convection cell, condensing heat exchanger is provided in Heat Room, air-introduced machine is connected to Heat Room, above-mentioned row
Smoke pipeline is connected to Heat Room.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820983759.XU CN208504370U (en) | 2018-06-25 | 2018-06-25 | A kind of gas-fired Boiler System of low nitrogen condensing twin furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820983759.XU CN208504370U (en) | 2018-06-25 | 2018-06-25 | A kind of gas-fired Boiler System of low nitrogen condensing twin furnace |
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| Publication Number | Publication Date |
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| CN208504370U true CN208504370U (en) | 2019-02-15 |
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ID=65286345
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| CN201820983759.XU Active CN208504370U (en) | 2018-06-25 | 2018-06-25 | A kind of gas-fired Boiler System of low nitrogen condensing twin furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108758616A (en) * | 2018-06-25 | 2018-11-06 | 浙江金锅锅炉有限公司 | A kind of gas-fired Boiler System of low nitrogen condensing twin furnace |
-
2018
- 2018-06-25 CN CN201820983759.XU patent/CN208504370U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108758616A (en) * | 2018-06-25 | 2018-11-06 | 浙江金锅锅炉有限公司 | A kind of gas-fired Boiler System of low nitrogen condensing twin furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A low nitrogen condensing double furnace gas boiler system Effective date of registration: 20210714 Granted publication date: 20190215 Pledgee: Bank of Jinhua Limited by Share Ltd. Jindong branch Pledgor: ZHEJIANG JINGUO BOILER Co.,Ltd. Registration number: Y2021330000894 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20221122 Granted publication date: 20190215 Pledgee: Bank of Jinhua Limited by Share Ltd. Jindong branch Pledgor: ZHEJIANG JINGUO BOILER Co.,Ltd. Registration number: Y2021330000894 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |