CN218207837U - Double-parameter regulating valve - Google Patents
Double-parameter regulating valve Download PDFInfo
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- CN218207837U CN218207837U CN202222311664.2U CN202222311664U CN218207837U CN 218207837 U CN218207837 U CN 218207837U CN 202222311664 U CN202222311664 U CN 202222311664U CN 218207837 U CN218207837 U CN 218207837U
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- valve
- valve body
- valve core
- baffle
- core baffle
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 12
- 239000000843 powder Substances 0.000 claims abstract description 33
- 238000009434 installation Methods 0.000 claims description 12
- 238000012423 maintenance Methods 0.000 claims description 11
- 239000000919 ceramic Substances 0.000 claims description 6
- 230000009977 dual effect Effects 0.000 claims description 5
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 claims 1
- 239000011241 protective layer Substances 0.000 claims 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims 1
- 239000003245 coal Substances 0.000 abstract description 27
- 238000013461 design Methods 0.000 description 10
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002817 coal dust Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The utility model discloses a double-parameter regulating valve, which is arranged on a powder feeding pipeline at the outlet of a separator, and comprises a hollow cylindrical valve body without a central shaft, a plurality of driving structures uniformly distributed on the outer wall of the circumference of the valve body, and a valve core baffle which is connected with the output end of the driving structures and is positioned inside the valve body and can swing within a range of 90 degrees; the flow rate of the inner cavity of the valve body is determined by the swing angle of the valve core baffle, the flow rate when the valve core baffle is attached to the inner wall of the valve body is the largest, and the flow rate when the valve core baffle is radially superposed with the valve body is the smallest. The utility model discloses can satisfy the leveling demand of once amount of wind and buggy concentration biparametric in each send the powder pipeline, reach the target that the balanced burning of boiler reduces the coal consumption.
Description
Technical Field
The utility model belongs to the technical field of the valve body, concretely relates to two parameter control valves to two parameter leveling of pulverized coal velocity of flow, concentration in each powder feeding pipeline of coal pulverizer separator export.
Background
A large number of field performance test analysis results show that the problem of uneven primary air powder distribution in the operation of the boiler generally exists; due to the lack of effective measurement and regulation means, a series of key problems and faults in the combustion of the boiler cannot be solved more naturally at present: such as boiler efficiency and coal consumption, partial burning coking and tube explosion. The primary air-powder separation leveling is used as the most important link for reducing coal consumption and safely operating the pulverized coal fired boiler, and becomes the key topic for technical upgrading and reconstruction of domestic coal and electricity enterprises.
In the past, the air quantity of each air pipe can only be roughly leveled under the working condition of cold pure air through an adjustable shrinkage cavity, and the dynamic adjustment cannot be realized under the working condition of hot powder carrying. Although a special leveling valve is provided in the market at present, all the leveling valves are pure damping adjusting valves driven by a single actuating mechanism, only the primary air volume can be dynamically adjusted, and the leveling function for the deviation of the concentration of the coal powder in each powder conveying pipeline at the outlet of the coal mill is not provided. The aim of reducing coal consumption by boiler balanced combustion cannot be achieved only by adjusting primary air speed/air quantity, and the requirement of leveling dual parameters of primary air quantity and coal powder concentration in each powder conveying pipeline at the outlet of a separator of a coal mill is met.
SUMMERY OF THE UTILITY MODEL
To the problem that the above-mentioned background art provided, the utility model aims at: aims to provide a double-parameter regulating valve.
In order to realize the technical purpose, the utility model discloses a technical scheme as follows:
a double-parameter regulating valve is arranged on a powder feeding pipeline at an outlet of a separator and comprises a hollow cylindrical valve body without a central shaft, a plurality of driving structures uniformly distributed on the circumferential outer wall of the valve body, and a valve core baffle which is connected with the output end of the driving structures and is positioned in the valve body and can swing within a 90-degree range;
the flow rate of the inner cavity of the valve body is determined by the swing angle of the valve core baffle, the flow rate is the largest when the valve core baffle is attached to the inner wall of the valve body, and the flow rate is the smallest when the valve core baffle is radially overlapped with the valve body.
The number of the driving structures and the number of the valve core baffles are both 4, and the single valve core baffle is driven by the independent driving structure, so that the structural design drives the valve core baffles to swing through the driving structures, the independent driving can enable the adjustment of the flow rate of the inner cavity of the valve body to be more flexible, and the adjustment speed and the adjustment precision are high due to the fact that the flow rate deviation and the concentration deviation of coal dust are adjusted at the same time or with a heavy weight.
Further inject, the circumference of valve body is equipped with 4 installation maintenance holes to be connected with the fixed bolster outside the installation maintenance hole, the installation is accomplished through the fixed bolster to the drive structure, the outside open end of fixed bolster is connected with the dismouting and maintains the baffle, and such structural design installs through installation maintenance hole and maintains, and the fixed bolster is used for providing the mounting point, and the dismouting is maintained the baffle and is convenient for expose inside case baffle and drive structure.
Further prescribe that the drive structure includes motor and case drive shaft, such structural design to the motor is as the power supply, drives the rotation of case drive shaft, thereby makes the swing of case baffle.
Further inject, the inner wall that valve body, fixed bolster and dismouting maintained the baffle all is connected with high wear-resisting ceramic layer, and such structural design protects through high wear-resisting ceramic layer, improves life.
Further inject, the valve core baffle outside parcel carborundum inoxidizing coating, such structural design protects through the carborundum inoxidizing coating, improves life.
The utility model has the advantages that:
1. the leveling requirements of primary air quantity and coal powder concentration dual parameters in each powder conveying pipeline can be met, and the aim of reducing coal consumption by balanced combustion of the boiler is fulfilled.
Drawings
The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;
FIG. 1 is an isometric view of an embodiment of a two-parameter regulator valve of the present invention;
fig. 2 is a top view of an embodiment of a dual parameter regulating valve of the present invention;
FIG. 3 is a schematic structural view of a valve body in an embodiment of a two-parameter regulating valve of the present invention;
the main component symbols are as follows:
1. a valve body; 2. a valve core baffle; 3. a high wear-resistant ceramic layer; 4. fixing a bracket; 5. and disassembling the maintenance baffle.
Detailed Description
In order to make the technical solution of the present invention better understood, the following description is provided for the purpose of illustrating the present invention with reference to the accompanying drawings and embodiments.
As shown in fig. 1-3, the two-parameter regulating valve of the present invention, which is installed in the powder feeding pipe at the outlet of the separator, comprises a hollow cylindrical valve body 1 without a center shaft, a plurality of driving structures uniformly distributed on the outer wall of the circumference of the valve body 1, and a valve core baffle 2 which is connected with the output end of the driving structures and is positioned inside the valve body 1 and can swing within a 90 ° range;
the through flow of the inner cavity of the valve body 1 is determined by the swing angle of the valve core baffle plate 2, the through flow when the valve core baffle plate 2 is attached to the inner wall of the valve body 1 is the largest, and the through flow when the valve core baffle plate 2 is radially overlapped with the valve body 1 is the smallest.
In the embodiment, when the coal pulverizer works, the regulating valve is connected with the coal pulverizer through the separator outlet powder feeding pipeline, and the other end of the regulating valve is connected with the combustor through the coal powder pipeline; the device controls the opening of the valve core baffle plate 2 through a driving structure with a bus communication function under the unified coordination of a central controller according to the actual measurement data of an air-powder measuring system arranged between the device and a combustor, and performs double-parameter automatic leveling on the deviation of the flow rate and the concentration of the coal powder in each coal powder feeding pipeline, so as to ensure that the flow rate and the concentration deviation of the coal powder in each coal powder feeding pipeline at the outlet of a coal mill are both within 7 percent, and the valve core baffle plate 2 can be withdrawn by attaching to the wall in a non-working state, so that the pipeline is in a completely hollow state; the valve core baffle 2 is completely closed, and the pipeline can still keep more than 50% of flow rate;
specifically, 4 valve core baffles 2 are independently driven, the valve core baffles 2 which are right opposite to the axial outer side of the powder feeding pipeline are used for actively adjusting the concentration deviation of the pulverized coal, and the other valve core baffles 2 are used for mainly adjusting the damping deviation in the pipeline so that the primary air speed in the powder feeding pipeline tends to be balanced; when the concentration deviation of the coal powder in each powder conveying pipeline is adjusted, the valve core baffle 2 which is opposite to the axial outer side of the powder conveying pipeline can change the opening and closing angle under the driving of the driving structure according to the air and powder measurement parameters, and the part of the coal powder entering the powder conveying pipeline from the outlet of the separator is adjusted and returned to the inverted triangular area of the separator for secondary distribution, so that the powder quantity of the coal powder entering each powder conveying pipeline from the outlet of the separator is effectively controlled, and the concentration leveling is realized.
Preferably, the quantity of drive structure and case baffle 2 is 4, and single case baffle 2 is driven by independent drive structure, and such structural design drives case baffle 2 swing through drive structure, and independent drive can make the adjustment of 1 inner chamber through-flow of valve body more nimble, simultaneously or have the regulation pulverized coal velocity of flow deviation and concentration deviation of overweight, and speed of adjustment and precision are high. In practice, other numbers of drive configurations and spool baffles 2 and control schemes may be specifically contemplated as the case may be.
Preferably, the circumference of valve body 1 is equipped with 4 installation maintenance holes to be connected with fixed bolster 4 outside the installation maintenance hole, the installation is accomplished through fixed bolster 4 to the drive structure, and the outside open end of fixed bolster 4 is connected with the dismouting and maintains baffle 5, and such structural design installs through the installation maintenance hole and maintains, and fixed bolster 4 is used for providing the mounting point, and the dismouting is maintained baffle 5 and is convenient for expose inside case baffle 2 and drive structure. In fact, other structural shapes of the valve body 1, as well as other structures for installation and maintenance, may also be specifically considered as the case may be.
Preferably, drive structure includes motor and case drive shaft, and such structural design to the motor is as the power supply, drives the rotation of case drive shaft, thereby makes case baffle 2 swing. In fact, other configurations of the drive structure may be specifically contemplated, as the case may be.
Preferably, the inner wall that baffle 5 was maintained in valve body 1, fixed bolster 4 and dismouting all is connected with high wear-resisting ceramic layer 3, and such structural design protects through high wear-resisting ceramic layer 3, improves life. In fact, other configurations of shielding are specifically contemplated as the case may be.
Preferably, the valve core baffle 2 outside parcel carborundum inoxidizing coating, such structural design protects through the carborundum inoxidizing coating, improves life. In fact, other configurations of the shielding may be specifically contemplated depending on the particular situation.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention shall be covered by the claims of the present invention.
Claims (6)
1. The utility model provides a two parameter control valve installs on the powder pipeline that send of separator export which characterized in that: the valve comprises a hollow cylindrical valve body (1) without a central axis, a plurality of driving structures uniformly distributed on the circumferential outer wall of the valve body (1), and a valve core baffle (2) which is connected with the output end of the driving structures and is positioned in the valve body (1) and can swing within a 90-degree range;
the flow rate of the inner cavity of the valve body (1) is determined by the swing angle of the valve core baffle (2), the flow rate is the largest when the valve core baffle (2) is attached to the inner wall of the valve body (1), and the flow rate is the smallest when the valve core baffle (2) and the valve body (1) are radially superposed.
2. A two parameter regulator valve in accordance with claim 1, wherein: the number of the driving structures and the number of the valve core baffles (2) are both 4, the single valve core baffle (2) is driven by the independent driving structure, and the driving structures can carry out bus communication.
3. A two parameter regulator valve in accordance with claim 2, wherein: the circumference of valve body (1) is equipped with 4 installation maintenance holes to be connected with fixed bolster (4) outside the installation maintenance hole, the installation is accomplished through fixed bolster (4) to the drive structure, fixed bolster (4) outside open end is connected with dismouting and maintains baffle (5).
4. A dual parameter regulating valve in accordance with claim 3, wherein: the driving structure comprises a motor and a valve core driving shaft.
5. A two parameter regulator valve in accordance with claim 4, wherein: the inner walls of the valve body (1), the fixed support (4) and the dismounting maintenance baffle (5) are all connected with a high-wear-resistance ceramic layer (3).
6. A dual parameter regulating valve in accordance with claim 1, wherein: and the outer side of the valve core baffle (2) is wrapped with a silicon carbide protective layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222311664.2U CN218207837U (en) | 2022-08-30 | 2022-08-30 | Double-parameter regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222311664.2U CN218207837U (en) | 2022-08-30 | 2022-08-30 | Double-parameter regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218207837U true CN218207837U (en) | 2023-01-03 |
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ID=84630457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222311664.2U Active CN218207837U (en) | 2022-08-30 | 2022-08-30 | Double-parameter regulating valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN218207837U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115611002A (en) * | 2022-09-28 | 2023-01-17 | 国家能源集团山西电力有限公司 | Control valve |
| CN116592385A (en) * | 2023-03-31 | 2023-08-15 | 华能聊城热电有限公司 | A concentration adjustment mechanism, a fine powder separator and a concentrated powder feeding system |
-
2022
- 2022-08-30 CN CN202222311664.2U patent/CN218207837U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115611002A (en) * | 2022-09-28 | 2023-01-17 | 国家能源集团山西电力有限公司 | Control valve |
| CN116592385A (en) * | 2023-03-31 | 2023-08-15 | 华能聊城热电有限公司 | A concentration adjustment mechanism, a fine powder separator and a concentrated powder feeding system |
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