CN211587023U - Real-time adjustable static separator of medium-speed coal mill - Google Patents
Real-time adjustable static separator of medium-speed coal mill Download PDFInfo
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- CN211587023U CN211587023U CN201922424218.0U CN201922424218U CN211587023U CN 211587023 U CN211587023 U CN 211587023U CN 201922424218 U CN201922424218 U CN 201922424218U CN 211587023 U CN211587023 U CN 211587023U
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Abstract
The utility model discloses a real-time adjustable medium speed coal mill static separator, all separator baffles are divided into a plurality of groups, wherein, one group of separator baffles corresponds to an electric control system, one separator baffle corresponds to a baffle adjusting mechanism, each baffle adjusting mechanism comprises a central shaft, each electric control system comprises a controller, a signal source and an angle stroke actuator, the output end of an external DCS control system is connected with the input end of the controller through the signal source, the output end of the controller is connected with the control end of the angle stroke actuator, the output shaft of the angle stroke actuator is connected with the central shaft in one baffle adjusting mechanism, the central shafts in the baffle adjusting mechanisms corresponding to the separators in the same group are connected through an adjusting connecting rod, the lower ends of the central shafts pass through the top of the coal mill separator shell and are connected with the corresponding separator baffles, the separator can realize real-time adjustment of the fineness of coal powder at the outlet of the coal mill, and has good energy-saving effect.
Description
Technical Field
The utility model relates to a coal pulverizer static separator, concretely relates to intermediate speed coal pulverizer static separator with adjustable in real time.
Background
The coal sources of the existing power plants are relatively miscellaneous, the coal change range of the boiler is large and frequent, and the fineness of the pulverized coal needs to be continuously adjusted according to the change of coal quality during the operation of the boiler, so that the boiler can burn more completely and economically, and the operation safety of the boiler is ensured. The separator is adjusted according to the actual coal mass entering the furnace, the fineness of the coal dust at the outlet of the coal mill is changed, the problems of increased carbon content of fly ash, increased exhaust gas temperature and increased desuperheating water caused by coal quality change can be effectively solved, and the problems of burning out a burner nozzle and coking on a water cooling wall of a hearth can be avoided.
When the fineness of coal dust at the outlet of the coal mill needs to be adjusted, the static separator of the traditional medium-speed coal mill needs to be manually adjusted to the site. But because of the reasons of large adjusting workload, poor field environment, jam of the adjusting baffle plate and the like, the effective adjustment of the fineness of the pulverized coal cannot be realized in actual operation. The dynamic separator can effectively solve the problems, can realize real-time adjustment of the fineness of the coal powder in a remote place, but has the problems of complex equipment, high cost, high overhauling and maintenance difficulty and the like, and a large amount of test data show that the dynamic separator has no function of improving the output of the coal mill in advance, the dynamic separator drives a rotor to separate the coal powder by using a motor, and certain electric quantity is wasted.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a medium speed coal pulverizer static separator with adjustable in real time, this separator can realize that the coal pulverizer export buggy fineness is real-time adjustable, and energy-conserving effectual.
In order to achieve the purpose, the real-time adjustable medium-speed coal mill static separator comprises a coal mill separator shell, a plurality of baffle adjusting mechanisms, a plurality of electric control systems and a plurality of separator baffles arranged in the coal mill separator shell;
all the separator baffles are divided into a plurality of groups, wherein one group of separator baffles corresponds to one electric control system, one separator baffle corresponds to one baffle adjusting mechanism, each baffle adjusting mechanism comprises a central shaft, each electric control system comprises a controller, a signal source and an angle stroke actuator, the output end of an external DCS (distributed control System) is connected with the input end of the controller through the signal source, the output end of the controller is connected with the control end of the angle stroke actuator, the output shaft of the angle stroke actuator is connected with the central shaft in one baffle adjusting mechanism, the central shafts in the baffle adjusting mechanisms corresponding to the separator baffles in the same group are connected through adjusting connecting rods, and the lower end of each central shaft penetrates through the top of the shell of the coal mill separator and is connected with the corresponding separator baffle.
The device also comprises an upper bearing and a lower bearing which are arranged on the central shaft.
An upper oil seal and an upper oil cup are matched on the upper bearing.
The upper sleeve of the lower bearing is provided with a lower oil seal and a lower oil cup.
A sealing air chamber is arranged between the separator baffle and the top of the separator shell of the coal mill, wherein the central shaft penetrates through the sealing air chamber, and a sealing air inlet pipe is communicated with an air inlet of the sealing air chamber.
The number of separator baffles was 24.
The utility model discloses following beneficial effect has:
the utility model discloses a real-time adjustable medium speed coal pulverizer static separator when concrete operation, the space of buggy in coal pulverizer separator shell is separated through the rotatory centrifugal force that the separator baffle produced, the time powder gets into in the separator centrum, the control signal of DCS control system output is sent into the controller through the signal source, the output shaft of controller control angle stroke executor rotates, the output shaft of angle stroke executor drives center pin and separator baffle rotation, in order to change the size of rotatory centrifugal force, and then reach the purpose of adjusting the coal pulverizer export buggy fineness, wherein, only set up one set of electrical system on a baffle adjustment mechanism in each baffle adjustment mechanism of group, the center pin in other baffle adjustment mechanisms in this group drives through the adjusting link and realizes synchronous control, consequently save the electric energy, moreover, the steam generator is simple in structure, convenient operation, can realize the real-time adjustment of coal pulverizer export fineness, and the defects of a static separator and a dynamic separator of the traditional medium-speed coal mill can be effectively avoided, and the practicability is strong.
Further, traditional baffle is adjusted knot mechanism and is all adopted mechanical packing to seal, very easily causes the center pin bite after the buggy gets into the packing box or takes place the mechanism to warp for the unable regulation of separator baffle, the utility model discloses be provided with upper bearing and lower bearing on the well center pin, with reducing the regulation resistance, effectively prevent the bite, make the center pin can adjust in a flexible way.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a position diagram of the adjusting link 2 according to the present invention.
Wherein, 1 is a separator shell of the coal mill, 2 is an adjusting connecting rod, 3 is an upper oil seal, 4 is an upper oil cup, 5 is an upper bearing, 6 is a lower oil cup, 6 and 7 are lower bearings, 8 is a lower oil seal, 9 is a central shaft, 10 is a sealing air chamber, 11 is a sealing air inlet pipe, 12 is a separator baffle, 13 is an angular travel actuator, 14 is a controller, and 15 is a signal source.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1 and 2, the real-time adjustable static separator of the medium speed coal mill of the present invention comprises a coal mill separator housing 1, a plurality of baffle adjusting mechanisms, a plurality of electric control systems, and a plurality of separator baffles 12 disposed in the coal mill separator housing 1; all the separator baffles 12 are divided into a plurality of groups, wherein one group of separator baffles 12 corresponds to one electric control system, one separator baffle 12 corresponds to one baffle adjusting mechanism, each baffle adjusting mechanism comprises a central shaft 9, each electric control system comprises a controller 14, a signal source 15 and an angle stroke actuator 13, the output end of an external DCS control system is connected with the input end of the controller 14 through the signal source 15, the output end of the controller 14 is connected with the control end of the angle stroke actuator 13, the output shaft of the angle stroke actuator 13 is connected with the central shaft 9 in one baffle adjusting mechanism, the central shafts 9 in the baffle adjusting mechanisms corresponding to the separator baffles 12 in the same group are connected through adjusting connecting rods 2, the lower end of each central shaft 9 penetrates through the top of a shell 1 of the coal mill separator and is connected with the corresponding separator baffle 12, and the number of the separator baffles 12 is 24, wherein 6 are in one group.
The utility model also comprises an upper bearing 5 and a lower bearing 7 which are arranged on the central shaft 9, wherein, the upper bearing 5 is matched with an upper oil seal 3 and an upper oil cup 4; the lower bearing 7 is sleeved with a lower oil seal 8 and a lower oil cup 6.
A sealing air chamber 10 is arranged between the separator baffle plate 12 and the top of the coal mill separator shell 1, wherein a central shaft 9 penetrates through the sealing air chamber 10, and a sealing air inlet pipe 11 is communicated with an air inlet of the sealing air chamber 10.
The utility model discloses a concrete working process does:
the pulverized coal is separated in the space inside the separator shell 1 of the coal mill through the rotating centrifugal force generated by the separator baffle 12, and the returned powder enters the separator inner cone.
A control signal generated by the DCS control system is sent to the controller 14 via the signal source 15, and the controller 14 controls the rotation of the output shaft of the angular stroke actuator 13. The output shaft of the angular travel actuator 13 drives a central shaft 9 to rotate, meanwhile, the adjusting connecting rod 2 drives other corresponding central shafts 9 in the angular travel actuator 13 to rotate, the central shaft 9 drives the separator baffle 12 to rotate so as to change the magnitude of the rotary centrifugal force, and further the purpose of adjusting the fineness of coal powder at the outlet of the coal mill is achieved, wherein only one set of electric control system is arranged in each set of baffle adjusting mechanism, and the central shafts 9 in other baffle adjusting structures in the set are driven by the adjusting connecting rod 2 so as to realize synchronous adjustment.
In addition, the traditional baffle adjusting mechanism adopts mechanical packing for sealing, and when coal powder enters a packing box or the mechanism deforms, the central shaft 9 is very easy to jam, so that the baffle 12 of the separator cannot be adjusted. The utility model discloses be provided with upper bearing 5 and lower bearing 7 on the well center pin 9 to reduce the regulation resistance, effectively prevent the bite, make center pin 9 can adjust in a flexible way. Meanwhile, the upper bearing 5 is matched with the upper oil cup 3 and the upper oil cup 4, the lower bearing 7 is matched with the lower oil cup 6 and the lower oil cup 8, and lubricating grease is injected from the upper oil cup 4 and the lower oil cup 6 to lubricate the upper bearing 5, the lower bearing 7 and the central shaft 9. In order to prevent the pulverized coal from entering the lower bearing 7, a sealing air chamber 10 is arranged, and sealing air output by a sealing air inlet pipe 11 enters the separator through a channel between the sealing air chamber 10 and the central shaft 9 to play a role of sealing.
Claims (6)
1. A real-time adjustable medium-speed coal mill static separator is characterized by comprising a coal mill separator shell (1), a plurality of baffle adjusting mechanisms, a plurality of electric control systems and a plurality of separator baffles (12) arranged in the coal mill separator shell (1);
all the separator baffles (12) are divided into a plurality of groups, wherein one group of separator baffles (12) corresponds to one electric control system, one separator baffle (12) corresponds to one baffle adjusting mechanism, each baffle adjusting mechanism comprises a central shaft (9), each electric control system comprises a controller (14), a signal source (15) and an angle stroke actuator (13), the output end of an external DCS control system is connected with the input end of the controller (14) through the signal source (15), the output end of the controller (14) is connected with the control end of the angle stroke actuator (13), the output shaft of the angle stroke actuator (13) is connected with the central shaft (9) in one baffle adjusting mechanism, the central shafts (9) in the baffle adjusting mechanisms corresponding to the separator baffles (12) in the same group are connected through adjusting connecting rods (2), and the lower end of each central shaft (9) penetrates through the top of the separator shell (1) of the coal mill and is connected with the corresponding separator baffle (12) .
2. The real-time adjustable medium speed coal mill static separator according to claim 1, further comprising an upper bearing (5) and a lower bearing (7) disposed on the central shaft (9).
3. The real-time adjustable static separator of the medium speed coal mill according to claim 2, wherein the upper bearing (5) is provided with an upper oil seal (3) and an upper oil cup (4).
4. The real-time adjustable medium speed coal mill static separator according to claim 2, characterized in that the lower bearing (7) is sleeved with the lower oil seal (8) and the lower oil cup (6).
5. The real-time adjustable medium speed coal mill static separator according to claim 1, characterized in that a sealing air chamber (10) is arranged between the separator baffle (12) and the top of the coal mill separator housing (1), wherein the central shaft (9) passes through the sealing air chamber (10), and the air inlet of the sealing air chamber (10) is communicated with a sealing air inlet pipe (11).
6. The real-time adjustable medium speed coal mill static separator according to claim 1, characterized in that the number of separator baffles (12) is 24.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922424218.0U CN211587023U (en) | 2019-12-27 | 2019-12-27 | Real-time adjustable static separator of medium-speed coal mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922424218.0U CN211587023U (en) | 2019-12-27 | 2019-12-27 | Real-time adjustable static separator of medium-speed coal mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211587023U true CN211587023U (en) | 2020-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922424218.0U Active CN211587023U (en) | 2019-12-27 | 2019-12-27 | Real-time adjustable static separator of medium-speed coal mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211587023U (en) |
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2019
- 2019-12-27 CN CN201922424218.0U patent/CN211587023U/en active Active
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