CN105950809A - Cooling water circulation system for hot-state tests of blast furnace cooler - Google Patents
Cooling water circulation system for hot-state tests of blast furnace cooler Download PDFInfo
- Publication number
- CN105950809A CN105950809A CN201610463450.3A CN201610463450A CN105950809A CN 105950809 A CN105950809 A CN 105950809A CN 201610463450 A CN201610463450 A CN 201610463450A CN 105950809 A CN105950809 A CN 105950809A
- Authority
- CN
- China
- Prior art keywords
- water
- blast furnace
- cooling
- cooler
- hot
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/10—Cooling; Devices therefor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/24—Test rods or other checking devices
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
- C02F2103/023—Water in cooling circuits
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/08—Corrosion inhibition
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/14—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention provides a cooling water circulation system for hot-state tests of a blast furnace cooler, and belongs to the technical field of blast furnace ironmaking. The cooling water circulation system comprises the following three parts: a cooling wall system, a water circulation system and a tuyere medium and small sleeve system; three pipeline systems are respectively designed for a blast furnace cooling wall hot-state test, a tuyere medium sleeve hot-state test, and a tuyere small sleeve hot-state test; the water pipeline size of each pipeline system is consistent with that of the cooler in actual industrial application; each pipeline system is designed to comprise a water pump, one or more flow control valves, one or more pressure transmitters and one or more water temperature measuring devices, so that parameters of the blast furnace cooler in the hot-state test processes can be precisely controlled and the acquired; by adoption of the cooling water circulation system, the stable quality of cooling water and the stable water inlet temperature of the cooler in the hot-state test processes can be guaranteed; and meanwhile, the water inlet/outlet temperature, the water flow rate and the water velocity of the cooler can be precisely measured and allowed to be consistent with the actual industrial application conditions of the blast furnace cooler.
Description
Technical field
The present invention relates to technical field of blast furnace ironmaking, particularly relate to a kind of for blast furnace cooler heat
The cooling water recirculation system of state test.
Background technology
The life of the blast furnace is closely bound up with body of heater cooling device, and the life-span improving body of heater cooling device becomes
Key link for the development of prolonging campaign technology.Blast furnace cooling stave, tuyere medium sleeve, tuyere small sleeve
It it is the important cooling device of blast furnace.Design process at the medium and small set of blast furnace cooling stave and air port
In, need to grasp cooling wall by numerical simulation and air port is medium and small is enclosed within different working condition
Thermo parameters method, Stress Field Distribution and deformation situation.And hot test can verify numerical value
The reliability of simulation, thus the design for the medium and small set of cooling wall and air port provides guidance.Therefore,
Hot test is significant for the design and use of blast furnace cooling stave, the medium and small set in air port.
During blast furnace cooler hot test, need continual logical cooling water to cooler
Cool down, it is therefore necessary to design cooling water recirculation system, meet blast furnace cooler hot test
Needs.It addition, for the reliability ensureing hot test, water pipe in cooling water recirculation system
Size, cooling water flow, cooling water water speed, quality of cooling water amount should be real with blast furnace cooler
Border commercial Application operating mode keeps consistent.
For the cooling water recirculation system of blast furnace cooler hot test, existing four are respectively
Changshu burner factory, Shantou Huaxing Metallurgical Equipment Co., Ltd., the casting of the sky, Hebei high-tech metallurgy
Make company limited and Hebei Wanfeng Metallurgy Spare Parts Co., Ltd..Wherein first three is cooling water circulation
System only for the hot test of blast furnace cooling stave, Hebei Wanfeng Metallurgy Spare Parts Co., Ltd. cold
But water circulation system is for blast furnace cooling stave and the hot test of tuyere small sleeve, there is presently no height
The cooling water recirculation system that stove cooling wall, tuyere medium sleeve, tuyere small sleeve hot test are all suitable for.
It addition, for the design of cooling water recirculation system, do not account for quality of cooling water amount for cyclic system
The impact of system, and cooler inflow temperature instability during hot test, temperature survey,
Flow measurement and control accuracy are the highest.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of for blast furnace cooler hot test
Cooling water recirculation system.
This system includes the medium and small cover system in cooling wall system, water circulation system and air port, and water circulates
System is connected respectively at the medium and small cover system of cooling wall system and air port by water pipe, the medium and small set in air port
System includes tuyere medium sleeve and tuyere small sleeve；Wherein, water circulation system includes main water box, circulation
Water filter, air cooler and automatic medicine-feeding device for circulating water, circulating water strainer is arranged on
Main water box recirculated water porch, air cooler and automatic medicine-feeding device for circulating water directly with main water
Case connects；Water in main water box is pumped through water pump, through flow control valve, pressure inverting
Device, electromagnetic flowmeter and temperature measurement device, to the medium and small cover system of cooling wall system and air port；
After cooling water carries out heat exchange with the medium and small cover system of cooling wall system and air port, arrive outlet pipe
Road, then arrive water return pipeline, by following bad water mistake through temperature measurement device, pressure transmitter
Filter returns main water box.
This system devises three pipe-line systems, be respectively directed to cooling wall system, tuyere medium sleeve,
The hot test of tuyere small sleeve.Article three, in pipe-line system, the discharge of each water pipe, current
Speed, hydraulic pressure are both designed as controllable.Cooling wall system devises return pipe, at cooling wall
Two water pipes of system devise three-way valve.
Corrosion inhibiting and descaling agent is added, kills by Automatic Dosing switch board by automatic medicine-feeding device for circulating water
Bacterium algicide adds and water quality on-line monitoring module is controlled, the concrete formula of corrosion inhibiting and descaling agent
For:
Scale inhibition formula: HEDP+HPMA+PAAS=3mg/L+2mg/L+2mg/L；
Corrosion inhibition formula: HEDP+HPMA+PAAS=3mg/L+2mg/L+2mg/L；
Wherein: HEDP representation hydroxy ethylene-diphosphonic acid；HPMA represents hydrolytic polymaleic anhydride；
PAAS represents sodium polyacrylate.
Along water (flow) direction in circulating water strainer, set gradually single filter net and cascade filtration net,
Above single filter net and cascade filtration net, impulsive compressional air purge set is set,
In single filter net and the lower section of cascade filtration net, waste residue remover is set.
Main water box monitors cooling water temperature in real time by fixed infrared temperature detector.
Having the beneficial effect that of the technique scheme of the present invention:
1, cooling water recirculation system devises water treatment scheme.Ensure that blast furnace cooler is in warm
During state test, quality of cooling water amount stablizes, it is to avoid blast furnace cooler is in hot test process
Middle pipeline scale, corrosion, impact heat transfer.
2, cooling water recirculation system devises three pipe-line systems, be respectively directed to blast furnace cooling stave,
Tuyere medium sleeve, the hot test of tuyere small sleeve.Little in blast furnace cooling stave, tuyere medium sleeve, air port
In set practical application in industry, water pipe size and the parameter such as discharge, water speed there are differences, respectively
Designing three pipelines can make the control of parameter during hot test should closer to actual industrial
With, it is ensured that the reliability of hot test.It addition, for three pipe-line systems, each water pipe
Discharge, water flow velocity, hydraulic pressure be controllable type, it is simple to the most steady during Thermal-state test
Fixed control parameter.
3, cooling water recirculation system devises stability monitoring main water box temperature scenario.Ensure hot
In process of the test, blast furnace cooler inflow temperature is stable, improves the accuracy of hot test.
4, cooling water recirculation system devises accurate data acquisition plan.Ensure the most accurately
Gather the data during hot test.
Accompanying drawing explanation
Fig. 1 is that the cooling water recirculation system for blast furnace cooler hot test of the present invention is tied
Structure schematic diagram；
Fig. 2 is the automatic medicine-feeding device for circulating water cut-away view of the present invention；
Fig. 3 is the circulating water strainer structural representation of the present invention；
Fig. 4 is the main water box fixed infrared temperature detector cut-away view of the present invention.
Wherein: 1-cooling wall system；2-water circulation system；The medium and small cover system in 3-air port；4-wind
The little set of mouth；5-tuyere medium sleeve；6-main water box；7-circulating water strainer；8-air cooler；
9-automatic medicine-feeding device for circulating water；10-water pump；11-flow control valve；12-pressure transmitter；
13-electromagnetic flowmeter；14-temperature measurement device；15-three-way valve；16-single filter net；17-
Cascade filtration net；18-compressed air blowing cleaner；19-waste residue remover.
Detailed description of the invention
For making the technical problem to be solved in the present invention, technical scheme and advantage clearer, below
To be described in detail in conjunction with the drawings and the specific embodiments.
The present invention provides a kind of cooling water recirculation system for blast furnace cooler hot test.
As it is shown in figure 1, this system includes in cooling wall system 1, water circulation system 2 and air port
Little cover system 3, water circulation system 2 is medium and small respectively at cooling wall system 1 and air port by water pipe
Cover system 3 connects, and the medium and small cover system in air port 3 includes tuyere medium sleeve 5 and tuyere small sleeve 4；Its
In, water circulation system 2 includes main water box 6, circulating water strainer 7, air cooler 8 and
Automatic medicine-feeding device for circulating water 9, circulating water strainer 7 is arranged on main water box 6 recirculated water entrance
Place, air cooler 8 and automatic medicine-feeding device for circulating water 9 are directly connected with main water box 6；Main
Water in water tank 6 is pumped through water pump 10, through flow control valve 11, pressure transmitter
12, electromagnetic flowmeter 13 and temperature measurement device 14, medium and small to cooling wall system 1 and air port
Cover system 3；Cooling water carries out heat exchange with the medium and small cover system of cooling wall system 1 and air port 3
After, arrive outlet conduit, then arrive back through temperature measurement device 14, pressure transmitter 12
Water lines, returns main water box 6 by following bad water filter 7.
This system respectively for the hot test of blast furnace cooling stave, the hot test of tuyere medium sleeve,
The hot test of tuyere small sleeve devises three pipe-line systems, the water pipe size of every pipe-line system
All in practical application in industry, keep consistent with cooler.Every pipe-line system all devises water pump
10, flow control valve 11, pressure transmitter 12, electromagnetic flowmeter 13, temperature measurement dress
Put 14, can be accurately controlled and gather blast furnace cooler parameter during hot test.
Wherein, for the discharge controlling four water pipes of cooling wall evenly, cooling wall pipeline designs
Return pipe；The situation of cooling wall when cutting off the water supply for analog blast furnace, in two water pipes of cooling wall
Devise three-way valve 15, to avoid steam pressure excessive damage cooling wall during hot test.
In water circulation system 2, for ensureing stablizing of water quality, the medicament devising process cooling water is joined
Side, and added by automatic medicine-feeding device for circulating water 9, and in water circulation system 2 main pipe rail
Devise circulating water strainer 7.It addition, for ensureing that cooler is intake during hot test
Stablizing of temperature, devises air cooler 8 and cools down the water in main water box 6, and lead to
Cross fixed infrared temperature detector and monitor cooling water temperature in real time.
As in figure 2 it is shown, for ensureing stablizing of water quality during hot test, devise dosing and join
Side is as follows:
Scale inhibition formula: HEDP+HPMA+PAAS=3mg/L+2mg/L+2mg/L；
Corrosion inhibition formula: HEDP+HPMA+PAAS=3mg/L+2mg/L+2mg/L；
Wherein: HEDP representation hydroxy ethylene-diphosphonic acid；HPMA represents hydrolytic polymaleic anhydride；
PAAS represents sodium polyacrylate.
For adding medicine composition, devise automatic medicine-feeding device for circulating water 9.Recirculated water Automatic Dosing
Device 9 includes internal corrosion inhibiting and descaling agent interpolation, sterilizing and algae-removing agent interpolation and water quality on-line monitoring mould
Block, is controlled by Automatic Dosing switch board, can detect the water during hot test at any time
Matter situation, and according to water quality situation Automatic Dosing.
As it is shown on figure 3, along water (flow) direction in circulating water strainer 7, set gradually single filter
Net 16 and cascade filtration net 17, thus contaminant filter is fallen, at single filter net 16 and two
The top of level drainage screen 17, arranges impulsive compressional air purge set 18, can regularly purge
Impurity on drainage screen, in single filter net 16 and the lower section of cascade filtration net 17, arranges useless
Slag remover 19, periodically gets rid of waste residue.
As shown in Figure 4, the present invention includes main water box fixed infrared temperature detector internal structure.Its
Including infrared emitting, sensor, microprocessor and digital display module, master can be monitored in real time
The temperature of water tank, it is ensured that the reliability of blast furnace cooler hot test.
The above is the preferred embodiment of the present invention, it is noted that for the art
Those of ordinary skill for, on the premise of without departing from principle of the present invention, it is also possible to do
Going out some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (5)
1., for a cooling water recirculation system for blast furnace cooler hot test, its feature exists
In: include cooling wall system (1), water circulation system (2) and air port medium and small cover system (3),
Water circulation system (2) passes through water pipe respectively at the medium and small cover system of cooling wall system (1) and air port
(3) connecting, the medium and small cover system in air port (3) includes tuyere medium sleeve (5) and tuyere small sleeve (4)；
Wherein, water circulation system (2) includes main water box (6), circulating water strainer (7), air
Cooler (8) and automatic medicine-feeding device for circulating water (9), circulating water strainer (7) is arranged on
Main water box (6) recirculated water porch, air cooler (8) and automatic medicine-feeding device for circulating water
(9) directly it is connected with main water box (6)；Water in main water box (6) is through water pump (10)
Pump, through flow control valve (11), pressure transmitter (12), electromagnetic flowmeter (13)
With temperature measurement device (14), to cooling wall system (1) and air port medium and small cover system (3)；
After cooling water carries out heat exchange with cooling wall system (1) and air port medium and small cover system (3),
Arrive outlet conduit, then arrive through temperature measurement device (14), pressure transmitter (12)
Water return pipeline, returns main water box (6) by following bad water filter (7).
Cooling water for blast furnace cooler hot test the most according to claim 1 follows
Loop systems, it is characterised in that: described cooling wall system (1) devises return pipe, cold
But two water pipes of wall system (1) devise three-way valve (15).
Cooling water for blast furnace cooler hot test the most according to claim 1 follows
Loop systems, it is characterised in that: described automatic medicine-feeding device for circulating water (9) passes through Automatic Dosing
Corrosion inhibiting and descaling agent interpolation, sterilizing and algae-removing agent interpolation and water quality on-line monitoring module are carried out by switch board
Controlling, the concrete formula of corrosion inhibiting and descaling agent is:
Scale inhibition formula: HEDP+HPMA+PAAS=3mg/L+2mg/L+2mg/L；
Corrosion inhibition formula: HEDP+HPMA+PAAS=3mg/L+2mg/L+2mg/L；
Wherein: HEDP representation hydroxy ethylene-diphosphonic acid；HPMA represents hydrolytic polymaleic anhydride；
PAAS represents sodium polyacrylate.
Cooling water for blast furnace cooler hot test the most according to claim 1 follows
Loop systems, it is characterised in that: along water (flow) direction in described circulating water strainer (7), successively
Single filter net (16) and cascade filtration net (17) are set, at single filter net (16) and
The top of cascade filtration net (17), arranges impulsive compressional air purge set (18),
Single filter net (16) and the lower section of cascade filtration net (17), arrange waste residue remover (19).
Cooling water for blast furnace cooler hot test the most according to claim 1 follows
Loop systems, it is characterised in that: described main water box (6) is real-time by fixed infrared temperature detector
Monitoring cooling water temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610463450.3A CN105950809B (en) | 2016-06-23 | 2016-06-23 | A kind of cooling water recirculation system for blast furnace cooler hot test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610463450.3A CN105950809B (en) | 2016-06-23 | 2016-06-23 | A kind of cooling water recirculation system for blast furnace cooler hot test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105950809A true CN105950809A (en) | 2016-09-21 |
| CN105950809B CN105950809B (en) | 2017-12-08 |
Family
ID=56903691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610463450.3A Active CN105950809B (en) | 2016-06-23 | 2016-06-23 | A kind of cooling water recirculation system for blast furnace cooler hot test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105950809B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112597606A (en) * | 2020-12-18 | 2021-04-02 | 上海大学 | Design method of gradient coating of blast furnace tuyere small sleeve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202272889U (en) * | 2011-09-26 | 2012-06-13 | 中冶南方工程技术有限公司 | Novel combined soft water closed circulation cooling system |
| CN202440524U (en) * | 2012-01-06 | 2012-09-19 | 中冶东方工程技术有限公司 | Improved closed-circulation cooling water system for blast furnace |
| CN204251637U (en) * | 2014-12-09 | 2015-04-08 | 郎达慧 | A kind of ironmaking tuyere small sleeve long lifetime device |
| CN204630404U (en) * | 2015-04-28 | 2015-09-09 | 李正福 | A kind of device utilizing sintering low temperature waste heat to cool circulation water of blast furnace |
-
2016
- 2016-06-23 CN CN201610463450.3A patent/CN105950809B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202272889U (en) * | 2011-09-26 | 2012-06-13 | 中冶南方工程技术有限公司 | Novel combined soft water closed circulation cooling system |
| CN202440524U (en) * | 2012-01-06 | 2012-09-19 | 中冶东方工程技术有限公司 | Improved closed-circulation cooling water system for blast furnace |
| CN204251637U (en) * | 2014-12-09 | 2015-04-08 | 郎达慧 | A kind of ironmaking tuyere small sleeve long lifetime device |
| CN204630404U (en) * | 2015-04-28 | 2015-09-09 | 李正福 | A kind of device utilizing sintering low temperature waste heat to cool circulation water of blast furnace |
Non-Patent Citations (4)
| Title |
|---|
| 何世德等: "《燃煤电厂现代水务管理》", 31 March 2014, 中国电力出版社 * |
| 封苏伟: "《自动化控制系统设计实例手册》", 31 December 2011, 中国建筑工业出版社 * |
| 崔金鹤: "高炉冷却壁热态实验及温度场模拟", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
| 左海滨等: "球墨铸铁冷却壁热态试验研究", 《2014年全国炼铁生产技术会暨炼铁学术年会文集（下）》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112597606A (en) * | 2020-12-18 | 2021-04-02 | 上海大学 | Design method of gradient coating of blast furnace tuyere small sleeve |
| CN112597606B (en) * | 2020-12-18 | 2022-08-19 | 上海大学 | Design method of gradient coating of blast furnace tuyere small sleeve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105950809B (en) | 2017-12-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101254953A (en) | Circulating cooling water purification re-utilization automatic monitoring system | |
| CN103346661B (en) | The processing equipment of traction convertor cooling system circulating line and processing method thereof | |
| CN207028117U (en) | A kind of die heater | |
| CN105950809A (en) | Cooling water circulation system for hot-state tests of blast furnace cooler | |
| CN111398526A (en) | Recirculated cooling water monitoring heat transfer system | |
| KR101329551B1 (en) | The recovery system of high temperature waste water heat | |
| CN205008334U (en) | Water pipe cleaning equipment air pulse generation system | |
| CN104374870A (en) | Simulation experiment device for scaling of water heater | |
| CN104296125B (en) | Condensing hot air furnace processing system for gas fired-boiler | |
| CN206160340U (en) | Heat exchange cooling water system | |
| CN209243465U (en) | A kind of draining resistance vapour device of steam and condensate system | |
| CN202808950U (en) | Cold-rolling titanium belt degreasing process device | |
| CN107858467B (en) | Blast furnace cooling water leakage detection method and system | |
| CN202382580U (en) | Water returning tank capable of observing operation of recycled water | |
| CN205879907U (en) | Multi -functional on -line monitoring device of thermal power factory heat exchanger | |
| JPS5915800A (en) | Fouling preventing apparatus | |
| CN203365415U (en) | Simulation experiment device for scaling of water heater | |
| CN207027982U (en) | A kind of die heater | |
| CN207635318U (en) | A kind of boiler blowdown water comprehensive utilization device | |
| CN204043940U (en) | A kind of radiator cold thermal cycling test system | |
| CN207027981U (en) | A kind of die heater | |
| CN111307478B (en) | Online simulation detection platform of water ground source heat pump unit | |
| CN107388223A (en) | A kind of boiler blowdown water comprehensive utilization device and its application method | |
| CN207894018U (en) | A kind of gas fired-boiler water supply hybrid control system | |
| CN209515611U (en) | A kind of substrate cleaning apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |