CN201433795Y - Special scale eliminator for turbine - Google Patents
Special scale eliminator for turbine Download PDFInfo
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- CN201433795Y CN201433795Y CN2009200895251U CN200920089525U CN201433795Y CN 201433795 Y CN201433795 Y CN 201433795Y CN 2009200895251 U CN2009200895251 U CN 2009200895251U CN 200920089525 U CN200920089525 U CN 200920089525U CN 201433795 Y CN201433795 Y CN 201433795Y
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Abstract
The utility model provides a special scale eliminator for a turbine. The scale eliminator comprises a boiler, a cylinder, a deaerator and a water feeding pump, which are fixedly connected through seamless pipes to form a main water feeding pipeline; a branch water feeding pipeline, a natural flow pipe and a sampling pipe are arranged on the main water feeding pipeline; the branch water feeding pipeline is arranged between an attemperating water valve and a back pressure isolation valve; the natural flow pipe and the sampling pipe are arranged between a drain valve and the cylinder which are behind a main automatic valve; a hydraulic pressure gauge and a hand-operated valve of an attemperating water pipeline are arranged on the branch water feeding pipeline; a Curtis pressure gauge is arranged on the cylinder; a water gauge is arranged on a pipeline of the drain valve of the cylinder body; and a turning ammeter is arranged on a site turning device. Simple devices are additionally arranged on the basis of the traditional turbine to eliminate scale on the turbine. Therefore, the special-purpose scale eliminator for the turbine has the advantages of simple structure, convenient use, low cost and fast scale elimination, and can greatly improve the production efficiency of an enterprise and save the manufacturing cost.
Description
Technical field
The utility model relates to a kind of descaler, particularly a kind of steam turbine special descaling device.
Background technique
At present, the steam turbine scale removal is adopted and is mainly contained three kinds of methods, is respectively mechanical descaling, chemical cleaning and electrostatic-scaling.The method of mechanical descaling is to stop to take off the cylinder scale removal, promptly manually carrying out machinery cleans, generally speaking, 8 workmans of steam turbine need remove the dirt layer and just can finish with seven days left and right sides time, this method makes parking stop production and labor intensity is big, equipment is had damage, not only expend great amount of manpower and material resources, and have a strong impact on the economic benefit of company.Chemical cleaning adopts exactly is with corrosive chemical materials that steam turbine is cleaned, very big to the infringement of equipment, has had a strong impact on the working life of steam turbine.Electrostatic-scaling is fine in theory, but the device structure complexity, and manufacture cost is too high, and needs special descaling equipment, with the disconnection that needs of producing in the reality.For example: Chinese disclosed, the patent No. is 99250524.0 utility model patent, complex structure, the cost height of making and using.
The model utility content
The technical problems to be solved in the utility model has provided a kind of simple in structure, easy to use, with low cost, scale removal steam turbine special descaling device fast.
For solving the problems of the technologies described above, the technological scheme that the utility model adopted is:
The utility model provides a kind of steam turbine special descaling device, comprise boiler 1, cylinder 7, oxygen-eliminating device 19 and feed water pump 20, weldless tube is with boiler 1, cylinder 7, oxygen-eliminating device 19 is fixedlyed connected with feed water pump 20, constitute the service main road, also be provided with main steam admission isolating door 2 on the service main road, automatically main inlet throttle-stop valve is preceding hydrophobic 3, automatic main inlet throttle-stop valve 4, hydrophobic door 8 behind the automatic main inlet throttle-stop valve, the hydrophobic door 13 of cylinder body, the isolating door 15 of bleeding, the hydrophobic door 16 of the isolating door of bleeding, on-the-spot barring gear, to empty steam discharge door 18, back pressure separating valve 24, back pressure separating valve bypass door 25, hydrophobic door 26 behind the back pressure separating valve, desuperheat water valve 28 and back pressure pipeline 29, wherein, the service main road is provided with feedwater branch line 12, gravity line 9 and probe tube 10, feedwater branch line 12 is arranged between desuperheat water valve 28 and the back pressure separating valve 24, gravity line 9 and probe tube 10 are arranged on behind the automatic main inlet throttle-stop valve between the hydrophobic door 8 and cylinder 7, feedwater branch line 12 is provided with water pressure gage 22 and cooling water pipeline hand operated door 23, cylinder 7 is provided with velocity-compounded stage pressure gauge 6, on-the-spot barring gear is provided with jiggering ammeter 5, and the pipeline of the hydrophobic door 13 of cylinder body is provided with fluviograph 14.
Further, the service main road is provided with DN32 valve 27.
Further, feedwater branch line 12 is provided with DN32 valve 21.
Further, the packing place of cylinder 7 is provided with two drainage systems, is respectively hydrophobic door 11 of front steam seal and the hydrophobic door 17 of back packing.
The beneficial effects of the utility model are:
Steam turbine special descaling device described in the utility model, comprise boiler 1, cylinder 7, oxygen-eliminating device 19 and feed water pump 20, weldless tube is with boiler 1, cylinder 7, oxygen-eliminating device 19 is fixedlyed connected with feed water pump 20, constitute the service main road, wherein, the service main road is provided with feedwater branch line 12, gravity line 9 and probe tube 10, feedwater branch line 12 is arranged between desuperheat water valve 28 and the back pressure separating valve 24, gravity line 9 and probe tube 10 are arranged on behind the automatic main inlet throttle-stop valve between the hydrophobic door 8 and cylinder 7, feedwater branch line 12 is provided with water pressure gage 22 and cooling water pipeline hand operated door 23, cylinder 7 is provided with velocity-compounded stage pressure gauge 6, the pipeline of the hydrophobic door 13 of cylinder body is provided with fluviograph 14, and on-the-spot barring gear is provided with jiggering ammeter 5.Water inlet facilitated when feedwater branch line 12 cleaned for steam turbine, gravity line 9 can find out easily whether the water in the steam turbine is full of, and can control the balance of water inlet and outlet, probe tube 10 is used for water is taken a sample and chemically examined, water pressure gage 22 is used for monitoring hydraulic pressure, velocity-compounded stage pressure gauge 6 is used for monitoring cylinder 7 internal pressures, and the jiggering ammeter 5 that installs additional on the on-the-spot barring gear is used for monitoring the working condition of jiggering; Be respectively arranged with DN32 valve 27 and DN32 valve 21 on service main road and the feedwater branch line 12, thereby control the water flow of service main road and feedwater branch line 12 easily; The packing place of cylinder 7 is provided with two drainage systems, is respectively hydrophobic door 11 of front steam seal and the hydrophobic door 17 of back packing, and drainage system can prevent that the packing place from dabbling; The glass tube that is provided with on the fluviograph 14 is used for monitoring the water level of cylinder 7.
From the above: steam turbine special descaling device described in the utility model is to have increased some simple devices on the basis of steam turbine existing equipment, thereby finish the steam turbine scale removal, this steam turbine special descaling apparatus structure is simple, easy to use, with low cost, scale removal is quick, can improve the manufacturing efficiency of enterprise greatly, save entreprise cost.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, steam turbine special descaling device described in the utility model, comprise boiler 1, cylinder 7, oxygen-eliminating device 19 and feed water pump 20, weldless tube is with boiler 1, cylinder 7, oxygen-eliminating device 19 is fixedlyed connected with feed water pump 20, constitute the service main road, wherein, the service main road is provided with feedwater branch line 12, gravity line 9 and probe tube 10, feedwater branch line 12 is arranged between desuperheat water valve 28 and the back pressure separating valve 24, feedwater branch line 12 is provided with water pressure gage 22 and cooling water pipeline hand operated door 23, cylinder 7 is provided with velocity-compounded stage pressure gauge 6, the pipeline of the hydrophobic door 13 of cylinder body is provided with fluviograph 14, on-the-spot barring gear is provided with jiggering ammeter 5, water inlet facilitated when feedwater branch line 12 cleaned for steam turbine, gravity line 9 and probe tube 10 are arranged on behind the automatic main inlet throttle-stop valve between the hydrophobic door 8 and cylinder 7, gravity line 9 can find out easily whether the water in the steam turbine is full of, and the balance of control water inlet and outlet, probe tube 10 is used for water is taken a sample and chemically examined, water pressure gage 22 is used for monitoring hydraulic pressure, velocity-compounded stage pressure gauge 6 is used for monitoring cylinder 7 internal pressures, the jiggering ammeter 5 that installs additional on the on-the-spot barring gear is used for monitoring the working condition of jiggering; The service main road is provided with DN32 valve 27, and feedwater branch line 12 is provided with DN32 valve 21, and the DN32 valve can be controlled the flow of water in service main road and the feedwater branch line 12 easily; The packing place of cylinder 7 is provided with drainage system, and promptly the front steam seal place of cylinder 7 is provided with the hydrophobic door 11 of front steam seal, and the back packing place of cylinder 7 is provided with the hydrophobic door 17 of back packing, and drainage system can prevent effectively that the packing place from dabbling; The glass tube that is provided with on the fluviograph 14 is used for monitoring the water level of cylinder 7.
From the above: steam turbine special descaling device described in the utility model is to have increased some simple devices on the basis of steam turbine existing equipment, thereby finishes the steam turbine scale removal.Come below position, the model of the device that increases newly are described in further detail: on the service main road, install feedwater branch line 12 additional, the pipeline choosing
Weldless tube, perforate one end is arranged on desuperheat water valve 28 places, and the other end is arranged on the back pressure pipeline 29 before the back pressure separating valve 24; Installing gravity line 9 and probe tube 10 additional between hydrophobic door 8 and the cylinder 7 behind the automatic main inlet throttle-stop valve, and installing additional
The weldless tube drainage is to trench.Install fluviograph 14 additional on the pipeline of the hydrophobic door 13 of cylinder body, fluviograph 14 openings connect
Weldless tube causes six meters platforms with rubber pipe, adds glass tube and makes level monitoring usefulness.On the on-the-spot barring gear of steam turbine, install jiggering ammeter 5 monitoring jiggering situations additional, generally select one in 10 peace (10/5) ammeters for use, one of 10/5 D.C mutual-inductor, on cylinder 7, install velocity-compounded stage pressure gauge 6 additional, on service main road and feedwater branch line 12, increase DN32 valve 27 and DN32 valve 21 respectively, and on feedwater branch line 12, install water pressure gage 22 and cooling water pipeline hand operated door 23 additional.The packing place of cylinder 7 is provided with two drainage systems, and the hydrophobic door 11 of front steam seal promptly is set at the front steam seal place of cylinder 7, and packing hydrophobic door 17 in back is set at the back packing place of cylinder 7.
Operating process of the present utility model is:
A, close automatic main inlet throttle-stop valve 4, main steam admission isolating door 2, back pressure separating valve 24, back pressure separating valve bypass door 25, to empty steam discharge door 18, the hydrophobic door 13 of cylinder body, bleed isolating door 15 and the hydrophobic door 16 of the isolating door of bleeding;
B, open hydrophobic door 3 before the automatic main inlet throttle-stop valve, hydrophobic door 26 behind hydrophobic door 8, the back pressure separating valve behind the main inlet throttle-stop valve automatically;
C, the preceding electric high-voltage pump that starts that begins to intake adopt continuous electric barring ammeter 5 to observe the increases of jiggering current of electric and are no more than 1A;
Cooling water pipeline hand operated door 23 on d, the unlatching feedwater branch line 12, close the desuperheat water valve 28 on the service main road, control pressure pipe road 29 water inlets of supporting or opposing with the DN32 valve on the feedwater branch line 12 21, hydraulic pressure is controlled at 0.2 to 0.4MP, and the per minute flow control is at the 0.03-0.05 ton;
The gravity line 9 micro-water outlets behind automatic main inlet throttle-stop valve 4 of e, observed stage meter 14, DN32 valve 27 on the control service main road makes water inlet and water outlet reach transient equiliblium, observation velocity-compounded stage pressure gauge 6, pressure in the control cylinder 7 is no more than 0.40MPa, is advisable with the hydrophobic door 11 of front steam seal, the not a large amount of spilling waters of the hydrophobic door 17 of back packing;
After earlier feed water chlorion and hardness being chemically examined before f, the water inlet, per hour hydrophobic door 8 samplings behind automatic main inlet throttle-stop valve, sample examination chloride ion content and hardness;
G, do not change in continuous two hours when chloride ion content height to certain value, open the hydrophobic door 13 of cylinder body, strengthen water inlet, strengthen and change water after chloride ion content is reduced to normally, keeping gravity line 9 micro-flowing water continues to soak, continuous dipping 24 hours, or stop to soak or determining soak time according to chloride ion content.
A use that key point is an oxygen-removing water of workflow of the present utility model, on the one hand, oxygen-removing water is done washing lotion can effectively dissolve the dirt layer; On the other hand, oxygen-removing water does not have corrosion substantially to steam turbine unit material; Do washing lotion with oxygen-removing water, the scene can directly be got oxygen-eliminating device and be done the cleaning water source, can select for use feed water pump 20 as motive force to cylinder 7 water fillings, has simplified execute-in-place.Be to guarantee 5 ℃/min of pipeline temperature rise, oxygen-removing water by
Pipeline is carried, and discharge pressure is controlled at 0.1-0.15Kg/m
2
The standard of oxygen-removing water is:
| Title | Electricity is led (us/cm) | Hardness (mg/l) | cl - (mg/l) | O 2Content (mg/l) |
| Numerical value | ≤300 | ≤50 | ≤20 | ≤15 |
After adopting described steam turbine special descaling device that steam turbine is carried out scale removal, the Operational Limits of flow passage component is monitored, monitoring result is as shown in the table:
| Project | Main vapour pressure (MPa) | Temperature (℃) | Load (MW) | Velocity-compounded stage pressure (MPa) | Axial displacement oil pressure (MPa) | The steam consumption (Kg/kwh) | Vibration mm |
| Before the scale removal | 3.48 | 435 | 6000 | 2.47 | 0.370 | 15.12 | 0.042 |
| After the scale removal | 3.50 | 435 | 6000 | 1.7 | 0.44 | 14.48 | 0.025 |
Above-mentioned operation result shows: steam turbine special descaling device described in the utility model can carry out effective scale removal to steam turbine.Following table is to transform back 120 days Operational Limits of operation continuously, with transform before compare, lack than the every degree electricity of the steam consumption before transforming and consume about gas 0.64kg.
| Project | Main vapour pressure (MPa) | Temperature (℃) | Load (MW) | Velocity-compounded stage pressure (MPa) | Axial displacement oil pressure (MPa) | The steam consumption (Kg/kwh) | Vibration (mm) | Cleaning period (my god) |
| After the infusion method scale removal | 3.49 | 432 | 6000 | 1.7 | 0.44 | 14.48 | 0.025 | 180 |
In sum: Special scale eliminator for turbine described in the utility model has brought the progress of technology, has produced good economic benefit and social benefit.
(1) elimination the scale formation of steam turbine, reduced the number of times that turbine maintenance is cleaned, prolonged the effective storage life of steam turbine.
(2) solve the scale problems of steam turbine, make steam turbine can be for a long time, stable, move continuously.
(3) small investment of technology application, operating cost is low; System's security of operation is stable, and method of controlling operation thereof is scientific and reasonable, simple.
Claims (4)
1, a kind of steam turbine special descaling device, comprise boiler (1), cylinder (7), oxygen-eliminating device (19) and feed water pump (20), weldless tube is with boiler (1), cylinder (7), oxygen-eliminating device (19) is fixedlyed connected with feed water pump (20), constitute the service main road, also be provided with main steam admission isolating door (2) on the service main road, automatically before the main inlet throttle-stop valve hydrophobic (3), automatic main inlet throttle-stop valve (4), automatically behind the main inlet throttle-stop valve hydrophobic (8), the hydrophobic door of cylinder body (13), the isolating door (15) of bleeding, the hydrophobic door of the isolating door of bleeding (16), on-the-spot barring gear, to empty steam discharge door (18), back pressure separating valve (24), back pressure separating valve bypass door (25), hydrophobic door (26) behind the back pressure separating valve, back pressure pipeline (29) and desuperheat water valve (28), it is characterized in that: the service main road is provided with feedwater branch line (12), gravity line (9) and probe tube (10), feedwater branch line (12) is arranged between desuperheat water valve (28) and the back pressure separating valve (24), gravity line (9) and probe tube (10) are arranged on behind the automatic main inlet throttle-stop valve between the hydrophobic door (8) and cylinder (7), feedwater branch line (12) is provided with water pressure gage (22) and cooling water pipeline hand operated door (23), cylinder (7) is provided with velocity-compounded stage pressure gauge (6), on-the-spot barring gear is provided with jiggering ammeter (5), and the pipeline of the hydrophobic door of cylinder body (13) is provided with fluviograph (14).
2, steam turbine special descaling device according to claim 1, it is characterized in that: the service main road is provided with DN32 valve (27).
3, steam turbine special descaling device according to claim 1 is characterized in that: feedwater branch line (12) is provided with DN32 valve (21).
4, steam turbine special descaling device according to claim 1, it is characterized in that: the packing place of cylinder (7) is provided with two drainage systems, is respectively hydrophobic door of front steam seal (11) and the back hydrophobic door of packing (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200895251U CN201433795Y (en) | 2009-04-10 | 2009-04-10 | Special scale eliminator for turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200895251U CN201433795Y (en) | 2009-04-10 | 2009-04-10 | Special scale eliminator for turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201433795Y true CN201433795Y (en) | 2010-03-31 |
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ID=42052605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200895251U Expired - Fee Related CN201433795Y (en) | 2009-04-10 | 2009-04-10 | Special scale eliminator for turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201433795Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545380A (en) * | 2016-01-23 | 2016-05-04 | 安徽商贸职业技术学院 | Turbine blade scaling cleaning device and cleaning method thereof |
| CN107701246A (en) * | 2017-11-27 | 2018-02-16 | 辽宁大唐国际锦州热电有限责任公司 | Turbine low pressure cylinder axle envelope spray desuperheating device |
-
2009
- 2009-04-10 CN CN2009200895251U patent/CN201433795Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545380A (en) * | 2016-01-23 | 2016-05-04 | 安徽商贸职业技术学院 | Turbine blade scaling cleaning device and cleaning method thereof |
| CN107701246A (en) * | 2017-11-27 | 2018-02-16 | 辽宁大唐国际锦州热电有限责任公司 | Turbine low pressure cylinder axle envelope spray desuperheating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100331 Termination date: 20120410 |