CN210531250U - Anti-blocking and online filter screen updating device for submersible sewage pump - Google Patents
Anti-blocking and online filter screen updating device for submersible sewage pump Download PDFInfo
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- CN210531250U CN210531250U CN201921128178.9U CN201921128178U CN210531250U CN 210531250 U CN210531250 U CN 210531250U CN 201921128178 U CN201921128178 U CN 201921128178U CN 210531250 U CN210531250 U CN 210531250U
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Abstract
The utility model discloses a stealthily dirty pump prevents blockking up and online renewal filter unit relates to stealthily dirty pump technical field. The filter screen winding device comprises a filter screen unwinding device, a protective cover and a filter screen winding device, wherein a filter screen is wound on the filter screen unwinding device, the protective cover is used for covering an submersible sewage pump, a filter surface is arranged on the side surface of the protective cover, a filter screen inlet and a filter screen outlet are arranged on the protective cover, the free end of the filter screen enters from the filter screen inlet and surrounds the filter screen surface and is led out from the filter screen outlet, and the free end of the filter screen on the filter screen unwinding device is led out from the filter screen outlet of the protective cover and is. The utility model provides a submersible sewage pump anti-clogging and on-line filter screen updating device of the device can more effectively prevent the submersible sewage pump from being clogged, the filter screen can be automatically updated, and the filter screen plug-in can be replaced rapidly, so that the use is more convenient; in addition, this device still can set up control system, can change the filter screen more intelligently through detecting the liquid level height, sets up filter screen guide way and leading wheel and ball isotructure and makes the filter screen change more smoothly.
Description
Technical Field
The utility model relates to a stealthily dirty pump technical field specifically relates to stealthily dirty pump prevents blockking up and online renewal filter unit.
Background
The submersible sewage pump is used for discharging sewage, and is generally used in a regulation pool or a diversion well and used for lifting and discharging the sewage in the regulation pool or the diversion well out of the regulation pool or the diversion well.
Because the sewage environment in the regulation pool or the diversion well is severe, the submersible sewage pump works below the sewage surface for a long time, and the submersible sewage pump is easily blocked by sundries or floaters, so that the problems that the pump cannot work or a motor is burnt and the like are caused. The conventional method is that impurities in a pump body are cleaned after the pump is lifted out of the water surface after the pump is blocked, water in a regulating storage tank or a diversion well needs to be pumped and drained completely before the submersible sewage pump is lifted out of the water surface, the cost of pumping and draining once is high, the loss of the submersible sewage pump is large, and the method is time-consuming and labor-consuming. Therefore, the existing method for preventing the submersible sewage pump from being blocked is to arrange a sewage blocking grating and a crushing grating in front of the pump along the water flow direction, if the sewage blocking grating is an electric grating, the cost is high, the installation is complex, if a simple grating is selected, manual regular cleaning and maintenance are needed, the cleaning task is heavy, and the maintenance cost is high; if the crushing grating is selected, the cost is high, and the installation is troublesome.
Therefore, a water pump anti-winding technology which is low in cost, convenient to maintain and convenient to install is urgently needed, the problem that the water pump is wound and blocked can be solved, the safety of the water pump is protected, and the water pump can be cleaned and maintained conveniently and quickly.
SUMMERY OF THE UTILITY MODEL
To the defect that exists among the prior art, the utility model aims to provide a stealthily dirty pump prevents blockking up and online renewal filter unit, through setting up renewable filter screen, can prevent stealthily dirty pump jam, and it is convenient to maintain.
The utility model provides a stealthily dirty pump prevents blockking up and online renewal filter unit, include:
the filter screen unwinding device is wound with a filter screen;
the protective cover is used for covering the submersible sewage pump, a filtering surface is arranged on the side surface of the protective cover, a filter screen inlet and a filter screen outlet are arranged on the protective cover, and the free end of the filter screen enters from the filter screen inlet to surround the filtering surface and is led out from the filter screen outlet;
the filter screen unwinding device is characterized in that the free end of a filter screen on the filter screen unwinding device is led out from a filter screen outlet of the protective cover and is wound on the filter screen winding device.
On the basis of the technical scheme, the filter screen unwinding device comprises:
a screen insert comprising a hollow screen sleeve and a plurality of layers of said screen wrapped around said screen sleeve; and
the rolling stand column is arranged outside the protective cover, and the filter screen plug-in is rotatably arranged on the rolling stand column.
On the basis of the technical scheme, the upper end of the rolling upright post extends upwards, and the filter screen plug-in is provided with a pull rope which is arranged along the axial direction of the rolling upright post.
On the basis of the technical scheme, the filter screen winding device comprises:
a drum for winding the sieve exiting from the sieve outlet of the protection hood (4);
and the driving mechanism is connected with the roller and used for driving the roller to rotate and rolling the filter screen on the roller.
On the basis of the technical scheme, the driving mechanism comprises a motor and a coupler, and the output end of the motor is connected with the roller through the coupler.
On the basis of the technical scheme, the submersible sewage pump anti-blocking and on-line updating filter screen device further comprises a control system, and the control system comprises:
the liquid level monitoring device is used for monitoring the liquid level heights of the inner side and the outer side of the protective cover;
the controller, liquid level monitoring device and motor respectively with the controller links to each other, the controller is used for according to liquid level monitoring device monitors the liquid level height control in the protection casing inboard and the outside the motor action.
On the basis of the technical scheme, the liquid level monitoring device comprises liquid level meters which are respectively arranged on the inner side and the outer side of the protective cover, when the difference value between the liquid level height in the protective cover and the outer liquid level height is lower than a set value, the controller starting motor drives the roller to update the filter screen on the side filtering surface of the protective cover.
On the basis of the technical scheme, the protective cover is cylindrical, and the filtering surface of the protective cover is built by a stainless steel framework;
and/or a top plate filter screen is arranged at the top of the protective cover;
and/or, the rolling stand column is welded on the bottom plate of the protective cover, and a fixed bearing used for connecting the filter screen plug-in is arranged on the rolling stand column.
On the basis of the technical scheme, the filter screen guide way has all been opened to the top and the bottom of protection casing, be equipped with the opening that corresponds with filter screen entry and filter screen export on the filter screen guide way, the upper portion edge of filter screen free end is located the top of protection casing in the filter screen guide way, the lower part edge of filter screen free end is located the bottom of protection casing in the filter screen guide way.
On the basis of the technical scheme, a traction rope is fixedly arranged at the upper edge and/or the lower edge of the filter screen, a plurality of balls are uniformly arranged on the traction rope, and the balls in the filter screen guide grooves at the top and the bottom of the protective cover are in sliding connection with the filter screen guide grooves;
and/or guide wheels are arranged on two sides of the opening of the filter screen guide groove.
Compared with the prior art, the utility model has the advantages of:
the utility model provides a stealthily dirty pump prevents blockking up and online renewal filter screen device, through setting up filter screen unwinding device and filter screen coiling mechanism, when the filter screen on the protection casing takes place to block up, start the cylinder and rotate and drive the roll of filter screen plug-in components, take away the winding on the cylinder from the roll stand with the filter screen that blocks up, the filter screen that comes out newly from the filter screen plug-in components has replaced the original filter screen that blocks up on the protection casing, thereby realized online change filter screen, this structure can prevent stealthily dirty pump from being blockked up effectively, in time automatic renewal filter screen, also can quick replacement filter screen plug-in components, high durability and convenient use, reasonable in; the filter screen is intelligently replaced by detecting the liquid level height inside and outside the protective cover; in addition, the structure of a filter screen guide groove, a guide wheel, balls and the like is further arranged, so that the filter screen is more smoothly installed and replaced.
Drawings
FIG. 1 is a schematic view of the overall structure of a submersible sewage pump anti-clogging and on-line filter screen updating device according to embodiments 1-2 of the present invention;
fig. 2 is a schematic perspective view of the protective cover according to embodiments 1-2 of the present invention;
FIG. 3 is a side view of the shield according to embodiments 1-2 of the present invention;
fig. 4 is a schematic structural view of a filter screen insert according to embodiments 1-2 of the present invention;
FIG. 5 is a schematic view of the overall structure of the anti-clogging and on-line filter screen updating device of the submersible sewage pump in embodiments 3-6 of the present invention;
fig. 6 is a schematic structural view of a middle protective cover according to embodiments 3-6 of the present invention;
FIG. 7 is a top view of the middle boot and screen insert of embodiments 3-6 of the present invention;
fig. 8 is a schematic perspective view of a middle screen insert according to embodiments 3-6 of the present invention.
Reference numerals: 1-submersible sewage pump, 2-filter screen plug-in, 3-rolling upright post, 4-protective cover, 5-liquid level meter, 6-roller, 7-controller, 8-filter screen guide groove, 9-guide wheel, 10-filter screen, 11-traction rope, 12-ball, 13-filter screen sleeve, 14-fixed bearing, 15-motor, 16-shaft coupling, 17-framework and 18-top plate filter screen.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
As shown in fig. 1-4, the anti-clogging and on-line filter screen updating device for submersible sewage pump of the present embodiment includes:
the filter screen unreeling device is wound with a filter screen 10;
the protective cover 4 is used for covering the submersible sewage pump 1, a filtering surface is arranged on the side surface of the protective cover 4, a filter screen inlet and a filter screen outlet are arranged on the protective cover 4, and the free end of the filter screen 10 enters the surrounding filter screen surface from the filter screen inlet and is led out from the filter screen outlet;
the free end of a filter screen 10 on the filter screen unwinding device is led out through a filter screen outlet of the protective cover 4 and is wound on the filter screen winding device.
The preferred filter screen unwinding device in the embodiment comprises a filter screen plug-in 2 and a rolling upright post 3; the filter screen insert 2 comprises a hollow filter screen sleeve 13 and a plurality of layers of filter screens 10 wound on the filter screen sleeve 13; the rolling upright post 3 is arranged outside the protective cover 4, and the filter screen plug-in 2 is rotatably arranged on the rolling upright post 3. The filter screen unwinding device of preferred easy to assemble and change filter screen plug-in components 2, when filter screen 10 used up on filter screen plug-in components 2, can make things convenient for quick replacement filter screen plug-in components 2.
On the basis of the above scheme, the protection cover 4 of the embodiment is preferably cylindrical, and the filtering surface of the protection cover 4 is constructed by a stainless steel framework 17; and the top of the hood 4 may be provided with a fixed hood roof screen 18. In the embodiment, the mesh on the framework 17 is a square hole with the side length of 30 mm-40 mm, and the aperture of the filter screen 10 on the filter screen plug-in 2 is 10 mm-20 mm. The stainless steel skeleton can play the supporting role to filter screen 10, and the filter surface of protection casing 4 itself is difficult for blockking up, and matches through skeleton 17 and filter screen 10 of different apertures and plays good anti-clogging effect, can effectively prevent stealthily dirty pump 1 and block up.
In particular, the screen take-up device comprises a drum 6 for winding a screen 10 emerging from a screen outlet of the protection hood 4. The filter screen 10 on the filter screen insert 2 is led out of the filter screen outlet of the protective hood 4 after surrounding the side filter surface of the protective hood 4 and then wound on the drum 6. Starting cylinder 6 and rotating and can driving filter screen plug-in components 2 and roll, taking away filter screen 10 from rolling stand 3 and twining on cylinder 6, filter screen 10 that comes out newly from filter screen plug-in components 2 has replaced the former position of blockking up filter screen 10 on the protection casing 4 to the process of online change filter screen 10 has been realized.
Preferably, the top and the bottom of the protection hood 4 are both provided with a filter screen guide groove 8, the filter screen guide groove 8 is provided with an opening corresponding to a filter screen inlet and a filter screen outlet, the upper edge of the free end of the filter screen 10 is positioned in the filter screen guide groove 8 at the top of the protection hood 4, and the lower edge of the free end of the filter screen 10 is positioned in the filter screen guide groove 8 at the bottom of the protection hood 4. The filter screen guide groove 8 has good limiting and guiding effects on the upper part and the lower part of the filter screen 10, so that the filter screen 10 runs more stably, and the filter screen 10 is prevented from falling off or jamming.
The utility model discloses the application method of device as follows: the submersible sewage pump 1 is covered by the protective cover 4, the filter screen plug-in 2 is inserted into the rolling upright post 3 of the protective cover 4, the upper side and the lower side of the filter screen 10 are placed into the filter screen guide groove 8 of the protective cover 4, and finally the filter screen is led out of the opening of the filter screen guide groove 8 onto the roller 6.
According to the user demand, when changing the filter screen 10 on the protection casing 4 as required, can start the filter screen coiling mechanism and rotate and drive filter screen plug-in components 2 and roll to take away the filter screen 10 that blocks up the part from rolling stand 3 and twine on cylinder 6, filter screen 10 that comes out newly from filter screen plug-in components 2 has replaced former position of blockking up filter screen 10, thereby has realized the automatic process of changing filter screen 10.
Wherein, when using in regulation pond or reposition of redundant personnel well, for the replacement of filter screen 10, all set up filter screen unwinding device and filter screen coiling mechanism in the regulation pond or the position more than the surface of water of reposition of redundant personnel well, protection cover 4 sets up the bottom at regulation pond or reposition of redundant personnel well.
Example 2
As shown in fig. 1, on the basis of embodiment 1, the filter screen rolling device of this embodiment further includes a driving mechanism, which is connected to the drum 6 and is used for driving the drum 6 to rotate so as to roll the filter screen 10 on the drum 6. Preferably, the driving mechanism comprises a motor 15 and a coupling 16, and the output end of the motor 15 is connected with the roller 6 through the coupling 16.
This embodiment sets up electronic actuating mechanism, need not manual rolling, but electric drive cylinder 6 rotates realizes that filter screen 10 is electronic to be changed to set up shaft coupling 16 and can improve actuating mechanism stability, increase of service life.
Example 3
As shown in fig. 5, on the basis of embodiment 2, the online updating filtering apparatus of this embodiment further includes a control system. The control system includes: a liquid level monitoring device and controller 7; the liquid level monitoring device is used for monitoring the liquid level height of the inner side and the outer side of the protective cover 4; the liquid level monitoring device and the motor 15 are respectively connected with the controller 7, and the controller 7 is used for controlling the motor 15 to act according to the liquid level height of the inner side and the outer side of the protective cover 4 monitored by the liquid level monitoring device.
Preferably, the liquid level monitoring device includes level gauge 5 that sets up respectively in the inboard and outside of protection casing 4, and level gauge 5 all gives controller 7 with signal transmission, and when the interior liquid level height of protection casing 4 and the outer liquid level difference value of protection casing 4 were less than the setting value, controller 7 starter motor 15 drove cylinder 6 and updates the filter screen 10 of protection casing 4 side filtering surface.
The liquid level meter 5 of the embodiment is type-selected according to the manual for type selection of the Siemens ultrasonic liquid level meter; the controller 7 selects the model according to 'Siemens PLC model selection manual'.
When the device of the embodiment is used, when the filter screen 10 on the filter surface at the side of the protection cover 4 starts to be blocked, the difference between the internal liquid level and the external liquid level of the protection cover 4 is changed greatly, the control system can set a proper liquid level difference value in advance, and when the control system detects that the difference between the liquid level of the liquid level meter 5 in the protection cover 4 and the liquid level of the liquid level meter 5 outside the protection cover 4 is lower than a set value, the electric head of the rotary drum 6 is started to update the filter screen 10 on the filter surface at.
Control system is passed through to this embodiment, through detecting the liquid level height, can be when filter screen 10 blocks up automated inspection and change filter screen 10 intelligently, need not the artifical filter screen 10 circumstances of blockking up that detects, guarantees that stealthily dirty pump 1 in protection casing 4 can continuously carry out the pump sending smoothly.
Example 4
As shown in fig. 5-6, on the basis of the above embodiments, the rolling column 3 of this embodiment is provided with fixing bearings 14 at both upper and lower ends for connecting the filter screen insert 2, the inner holes of the fixing bearings 14 are fixed on the rolling column 3, and the rolling column 3 is welded on the bottom plate of the protection cover 4. The fixing bearing 14 of this embodiment conveniently carries out quick fixed mounting to filter screen plug-in components 2, and guarantees that filter screen plug-in components 2 can easily roll under the exogenic action and unreel, reduces the frictional force with rolling stand 3, makes filter screen 10 change more smoothly.
In addition, in order to replace the filter screen sleeve 13 on the filter screen plug-in 2, the protective cover 4 can be lifted out of the shunt well or the storage tank integrally, and after the replacement is finished, the protective cover 4 and the filter screen plug-in 2 are lowered integrally to cover the submersible sewage pump 1.
Further, when the upper end of the rolling upright post 3 extends out of the water surface, the pull rope is arranged on the filter screen plug-in 2 and arranged along the axial direction of the rolling upright post 3 and extends out of the water surface. After the filter screen 10 on the filter screen plug-in 2 is unreeled, the filter screen plug-in 2 is lifted above the water level along the rolling upright post 3 through the pull rope, after the free end of the filter screen 10 on the new filter screen plug-in 2 is butted with the fixed end of the filter screen 10 on the original filter screen plug-in 2, the filter screen plug-in 2 is inserted into the rolling upright post 3 to go underwater along the axial direction thereof. Need not to carry out underwater operation, also need not to say that the protection casing 4 wholly promotes out of the water, makes things convenient for the change of filter screen plug-in components 2, and is simple easy to operate.
Example 5
As shown in fig. 6 to 8, on the basis of the above embodiments, guide wheels 9 are installed on both sides of the opening of the screen guide groove 8 of the present embodiment. A traction rope 11 is fixedly arranged at the upper edge and the lower edge of the filter screen 10 in the filter screen plug-in unit 2, a plurality of balls 12 are uniformly arranged on the traction rope 11, and the interval between every two adjacent balls 12 is preferably 100-150 mm; the balls 12 located in the top and bottom screen guide slots 8 of the hood 4 are slidably connected to the screen guide slots 8.
The haulage rope 11 and the ball 12 that this embodiment set up can insert and install filter screen 10 in filter screen guide way 8 better, and leading wheel 9 and ball 12 isotructure still help filter screen 10 to advance along the direction of setting for between filter screen plug-in components 2 and the cylinder 6, and ball 12 and filter screen guide way 8 sliding connection reduce the frictional resistance between filter screen 10 and the protection casing 4, make filter screen 10 change process more smooth and easy.
Example 6
As shown in fig. 6, on the basis of the above embodiment, the top of the protection hood 4 is provided with a fixed hood top plate filter 18. In the embodiment, the top plate filter screen 18 is additionally arranged at the top of the protective cover 4, so that the filtering area is increased, and the quick operation of the submersible sewage pump 1 is facilitated.
Various modifications and variations of the embodiments of the present invention may be made by those skilled in the art, and they are within the scope of the present invention provided they are within the scope of the claims and their equivalents. What is not described in detail in the specification is prior art that is well known to those skilled in the art.
Claims (10)
1. Stealthily dirty pump is prevented blockking up and is updated filter screen device on line, its characterized in that includes:
the filter screen unwinding device is wound with a filter screen (10);
the protective cover (4) is used for covering the submersible sewage pump (1), a filtering surface is arranged on the side surface of the protective cover (4), a filter screen inlet and a filter screen outlet are arranged on the protective cover (4), and the free end of the filter screen (10) enters from the filter screen inlet and surrounds the filtering surface and is led out from the filter screen outlet;
the filter screen unwinding device is characterized in that the free end of a filter screen (10) on the filter screen unwinding device is led out from a filter screen outlet of the protective cover (4) and wound on the filter screen winding device.
2. The submersible sewage pump anti-clogging and on-line screen refreshing apparatus according to claim 1, wherein the screen unwinding apparatus comprises:
a screen insert (2), the screen insert (2) comprising a hollow screen sleeve (13) and a plurality of layers of the screen (10) wrapped around the screen sleeve (13); and
the rolling stand column (3) is arranged outside the protective cover (4), and the filter screen plug-in piece (2) is rotatably installed on the rolling stand column (3).
3. The submersible sewage pump anti-clogging and on-line screen updating device of claim 2, wherein: the upper end of the rolling upright post (3) extends upwards, a pull rope is arranged on the filter screen plug-in unit (2), and the pull rope is arranged along the axis direction of the rolling upright post (3).
4. The submersible sewage pump anti-clogging and on-line screen refreshing apparatus according to claim 1, wherein said screen take-up means comprises:
a drum (6) for winding the sieve (10) exiting from the sieve outlet of the protection hood (4);
and the driving mechanism is connected with the roller (6) and used for driving the roller (6) to rotate and rolling the filter screen (10) on the roller (6).
5. The submersible sewage pump anti-clogging and on-line screen updating device of claim 4, wherein: the driving mechanism comprises a motor (15) and a coupler (16), and the output end of the motor (15) is connected with the roller (6) through the coupler (16).
6. The submersible sewage pump anti-clogging and on-line screen updating apparatus of claim 5, wherein the submersible sewage pump anti-clogging and on-line screen updating apparatus further comprises a control system, the control system comprising:
the liquid level monitoring device is used for monitoring the liquid level height of the inner side and the outer side of the protective cover (4);
the liquid level monitoring device and the motor (15) are respectively connected with the controller (7), and the controller (7) is used for controlling the action of the motor (15) according to the liquid level height of the inner side and the outer side of the protective cover (4) monitored by the liquid level monitoring device.
7. The submersible sewage pump anti-clogging and on-line screen updating device of claim 6, wherein: the liquid level monitoring device is including setting up respectively level gauge (5) in protection casing (4) inboard and the outside, works as when the difference of liquid level height and outer liquid level height is less than the setting value in protection casing (4), controller (7) starter motor (15) drive cylinder (6) renew filter screen (10) of protection casing side filtering surface.
8. The submersible sewage pump anti-clogging and on-line screen updating device of claim 2, wherein: the protective cover (4) is cylindrical, and the filtering surface of the protective cover (4) is built by a stainless steel framework (17);
and/or a top plate filter screen (18) is arranged at the top of the protective cover (4);
and/or, the rolling upright post (3) is welded on the bottom plate of the protective cover (4), and a fixed bearing (14) used for connecting the filter screen plug-in (2) is arranged on the rolling upright post (3).
9. A submersible sewage pump anti-clogging and on-line screen refreshing apparatus according to any of claims 1 to 8, wherein: the top and the bottom of protection casing (4) have all been opened filter screen guide way (8), be equipped with the opening that corresponds with filter screen entry and filter screen export on filter screen guide way (8), the upper portion edge of filter screen (10) free end is located the top of protection casing (4) in filter screen guide way (8), the lower part edge of filter screen (10) free end is located the bottom of protection casing (4) in filter screen guide way (8).
10. The submersible sewage pump anti-clogging and on-line screen updating device of claim 9, wherein: a traction rope (11) is fixedly arranged at the upper edge and/or the lower edge of the filter screen (10), a plurality of balls (12) are uniformly arranged on the traction rope (11), and the balls (12) in the filter screen guide grooves (8) at the top and the bottom of the protective cover (4) are in sliding connection with the filter screen guide grooves (8);
and/or guide wheels (9) are arranged on two sides of the opening of the filter screen guide groove (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921128178.9U CN210531250U (en) | 2019-07-18 | 2019-07-18 | Anti-blocking and online filter screen updating device for submersible sewage pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921128178.9U CN210531250U (en) | 2019-07-18 | 2019-07-18 | Anti-blocking and online filter screen updating device for submersible sewage pump |
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| CN210531250U true CN210531250U (en) | 2020-05-15 |
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| CN201921128178.9U Active CN210531250U (en) | 2019-07-18 | 2019-07-18 | Anti-blocking and online filter screen updating device for submersible sewage pump |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112593567A (en) * | 2020-11-26 | 2021-04-02 | 中核华辰工程管理有限公司 | Dewatering well structure and construction method |
| CN114922699A (en) * | 2022-05-11 | 2022-08-19 | 首钢京唐钢铁联合有限责任公司 | Cooling system of boiler steam turbine generator unit and control method |
-
2019
- 2019-07-18 CN CN201921128178.9U patent/CN210531250U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112593567A (en) * | 2020-11-26 | 2021-04-02 | 中核华辰工程管理有限公司 | Dewatering well structure and construction method |
| CN114922699A (en) * | 2022-05-11 | 2022-08-19 | 首钢京唐钢铁联合有限责任公司 | Cooling system of boiler steam turbine generator unit and control method |
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