CN202048228U - Bidirectional adjustable shrinkage cavity device for pulverizing system powder tube of coal-fired unit - Google Patents
Bidirectional adjustable shrinkage cavity device for pulverizing system powder tube of coal-fired unit Download PDFInfo
- Publication number
- CN202048228U CN202048228U CN2011201505128U CN201120150512U CN202048228U CN 202048228 U CN202048228 U CN 202048228U CN 2011201505128 U CN2011201505128 U CN 2011201505128U CN 201120150512 U CN201120150512 U CN 201120150512U CN 202048228 U CN202048228 U CN 202048228U
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- valve body
- coal
- shrinkage cavity
- valve plate
- cavity device
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Abstract
The utility model provides a bidirectional adjustable shrinkage cavity device for a pulverizing system powder tube of a coal-fired unit. The bidirectional adjustable shrinkage cavity device comprises an upper flange, an upper valve body, a lower valve body, a lower flange and a split valve plate, wherein the split valve plate is arranged between the upper valve body and the lower valve body and is connected with an adjustment lead screw through a screw nut seat, and the adjustment lead screw is installed on a lead screw seat arranged outsides the valve bodies; and the adjustment lead screw is manually rotated so as to open and close the split valve plate, thereby achieving the purpose of changing the size of a circulation section. A sealing pressure strip is arranged between the split valve plate and the upper valve body, a force balancing plate is arranged between the sealing pressure strip and the upper valve body, the upper valve body is provided with an adjustment hole, and an adjustment screw and a compression spring are arranged in the adjustment hole. The sealing strength of the sealing pressure strip to the split valve plate is adjusted through the adjustment screw and the compression spring. The bidirectional adjustable shrinkage cavity device for the pulverizing system powder tube of the coal-fired unit has unique and simple structure, high adjustment precision and long service life, is tight and reliable to seal and is flexible to rotate.
Description
Technical field
The utility model relates to a kind of two-way adjustable shrinkage cavity device that is used for thermal power plant coal-fired unit pulverizing system tube cell, relates in particular to a kind of two-way adjustable shrinkage cavity device that is used on a wind (powder) pipe.
Background technique
In the coal-fired unit powder feeding pipes in thermal power plant, adopt the draw and insert-type Double core adjustable pipe on airduct of great majority at present.Because the sealing configuration of adjustable shrinkage cavity is too simple, in the process that plate pulls and pushes, the coal dust in causing easily managing leaks outside by the gap between plate and valve body; The leading screw of adjustable shrinkage cavity and the design of screw driving mechanism are in valve body, so in use for some time, because poorly sealed reality, powder in the valve is easy to the outer exocoel that drains to, pollute the driving mechanism in the exocoel, cause leading screw to rotate or driving mechanism is easily stopped up stuckly by coal dust, it is very big to regulate resistance, adjustability is very poor, and degree of regulation reduces; Secondly, the adjustable structural design of the sealing surface of adjustable shrinkage cavity is too simple, discontinuity on the sealing surface, in use be easy to the crushing sealing surface or cause transmission dumb, thereby influenced the safe operation of the working life and the coal burning machine group leader phase of adjustable shrinkage cavity because of local resistance is excessive.
The model utility content
The purpose of this utility model is at problems of the prior art and deficiency, and a kind of two-way adjustable shrinkage cavity device that is used for coal-fired unit pulverizing system tube cell is provided.
A kind of two-way adjustable shrinkage cavity device that is used for coal-fired unit pulverizing system tube cell of the utility model comprises upper flange, upper valve body, following valve body, lower flange, and is arranged on the valve plate of splitting between upper valve body and the following valve body; Described upper flange is connected with upper valve body, and following valve body is connected with lower flange; The described valve plate of splitting is connected with the adjusting leading screw by nut seat; Described adjusting leading screw is installed on the outer leading screw seat of valve body.Regulate leading screw by manual rotation and realize splitting the keying of valve plate, thereby reach the purpose that changes the flow area size.
Described splitting between valve plate and the upper valve body is provided with seal trim strip, and is provided with equal power plate between seal trim strip and upper valve body.On the described upper valve body adjustment hole is set, is provided with adjusting screw and pressure spring in the hole.Regulate seal trim strip to splitting the sealing dynamics of valve plate by adjusting screw, pressure spring.
The bi-side that described upper valve body correspondence is split valve plate are provided with the side sealing bar, have prevented that further the wind powder from leaking outside.
Described to split the relative side of valve plate be the selenodont breach, and the end of selenodont breach is the inclined-plane.When adjusting flow area, can play shoveling, prevent that coal dust from piling up and jam is split the activity of valve plate being deposited in the coal dust of splitting under the valve plate; The selenodont breach has been eliminated the eccentric defective that flows of wind powder simultaneously.
Correspondence is split the closed centerline of valve plate and is provided with Lou powder groove on the described valve body down, can slip to amassing fallen coal dust at ordinary times, does not allow stop that splitting generation accumulated powder on the valve plate track it opens and closes flexibly.
The relative prior art of the utility model has the following advantages:
1, regulate screw mandrel and be arranged on outside the valve body, the coal dust of having avoided leaking outside stops up leading screw, has guaranteed the reliability of transmission; Also be convenient to simultaneously the maintenance and the maintenance of drive part.
2, unique adjustable sealing configuration can prevent that coal dust from leaking outside; Stamping Steel Ribbon is provided with equal power plate, makes Stamping Steel Ribbon stressed even, and sealing surface is durable in use, and sealing effect is good.
3, the inclined-plane is processed in the end of splitting valve plate, can carry out shoveling to being deposited in the coal dust of splitting under the valve plate when adjusting flow area, can prevent to drop on the stuck fender plate of coal dust on the valve plate.
4, have the leakage powder groove of certain size in the both end sides of descending the valve body correspondence to the exploitation valve plate, can slip, prevented to stop the flexible switching of splitting valve plate splitting generation accumulated powder on the valve plate track to amassing fallen coal dust at ordinary times.
Description of drawings
Fig. 1 is a plan view of the present utility model;
Fig. 2 is the worm's eye view of Fig. 1;
Fig. 3 is the side sectional view of Fig. 2;
Fig. 4 is the partial schematic diagram when splitting the valve plate closure;
Fig. 5 is a structural representation of splitting valve plate.
Embodiment
Referring to Fig. 1,2, a kind of two-way adjustable shrinkage cavity device that is used for coal-fired unit pulverizing system tube cell comprises upper flange 1, upper valve body 2, valve body 4, lower flange 5 down, and be arranged on 4 of upper valve body 2 and following valve bodies split valve plate 6.Wherein upper flange 1 is connected with upper valve body 2, and following valve body 4 is connected with lower flange 5; Split valve plate 6 by being connected with adjusting leading screw 3 with its nut seat that is cast as one 17; Regulating leading screw 3 is installed on the outer leading screw seat 13 of valve body.Split valve plate 6 and realize opening and closing, thereby reach the purpose that changes the flow area size by manually rotating adjusting leading screw 3.Be provided with seal trim strip 10 splitting between valve plate 6 and the upper valve body 2, and between seal trim strip 10 and upper valve body 2, be provided with equal power plate 9.Upper valve body 2 is provided with adjustment hole, and adjusting screw 7 and pressure spring 8 are installed in the adjustment hole.By adjustable screw 7, pressure spring 8 to regulate the sealing dynamics of seal trim strip.The size of seal trim strip 10 sealing dynamics is adjusted by adjustable screw 7, Regulation spring 8 controls: earlier by the equal power plate 9 of Regulation spring 8 pretensions, by equal power plate 9 the sealing dynamics is delivered on the seal trim strip 10 again, reaches the purpose that sealing effect can be regulated.The both sides that upper valve body 2 correspondences are split valve plate 6 are fixed with side sealing bar 12 with bolt 11, have further improved sealing effect.Split valve plate 6 relative sides and be designed to selenodont breach 16, and the end of selenodont breach is designed to inclined-plane 14, like this, when adjusting flow area, carry out shoveling, to reduce to split the resistance that valve plate 6 opens and closes being deposited in the coal dust of splitting under the valve plate 6.Correspondence is split valve plate 6 closed centerline and is provided with Lou powder groove 15 on following valve body 4, can slip to amassing fallen coal dust at ordinary times, has prevented to stop the flexible switching of splitting valve plate splitting generation accumulated powder on the valve plate track.
The utility model structure is unique simply, sealing is tight reliable, and its degree of regulation height rotates flexibly, and long service life can keep the state flexibly that opens and closes all the time, and the position of unlatching shows by Pointing sign board.
Claims (7)
1. a two-way adjustable shrinkage cavity device that is used for coal-fired unit pulverizing system tube cell comprises upper flange (1), upper valve body (2), following valve body (4), lower flange (5), and be arranged on and split valve plate (6) between upper valve body (2) and the following valve body (4); Described upper flange (1) is connected with upper valve body (2), and following valve body (4) is connected with lower flange (5); It is characterized in that: the described valve plate (6) of splitting is connected with adjusting leading screw (3) by nut seat (17); Described adjusting leading screw (3) is installed on the outer leading screw seat (13) of valve body.
2. be used for the two-way adjustable shrinkage cavity device of coal-fired unit pulverizing system tube cell according to claim 1, it is characterized in that: the described valve plate (6) of splitting is cast as one with nut seat (17).
3. the two-way adjustable shrinkage cavity device that is used for coal-fired unit pulverizing system tube cell according to claim 1, it is characterized in that: described splitting between valve plate (6) and the upper valve body (2) is provided with seal trim strip (10), and is provided with equal power plate (9) between seal trim strip (10) and upper valve body (2).
4. as being used for the two-way adjustable shrinkage cavity device of coal-fired unit pulverizing system tube cell as described in the claim 3, it is characterized in that: described upper valve body (2) is provided with adjustment hole, and adjusting screw (7) and pressure spring (8) are installed in this adjustment hole.
5. be used for the two-way adjustable shrinkage cavity device of coal-fired unit pulverizing system tube cell according to claim 1, it is characterized in that: the described relative side of valve plate (6) of splitting is selenodont breach (16), and the end of this selenodont breach (16) is inclined-plane (14).
6. be used for the two-way adjustable shrinkage cavity device of coal-fired unit pulverizing system tube cell according to claim 1, it is characterized in that: the both sides that described upper valve body (2) correspondence is split valve plate (6) are provided with side sealing bar (12).
7. be used for the two-way adjustable shrinkage cavity device of coal-fired unit pulverizing system tube cell according to claim 1, it is characterized in that: the last correspondence of described following valve body (4) is split the closed centerline of valve plate (6) and is provided with Lou powder groove (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201505128U CN202048228U (en) | 2011-05-12 | 2011-05-12 | Bidirectional adjustable shrinkage cavity device for pulverizing system powder tube of coal-fired unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201505128U CN202048228U (en) | 2011-05-12 | 2011-05-12 | Bidirectional adjustable shrinkage cavity device for pulverizing system powder tube of coal-fired unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202048228U true CN202048228U (en) | 2011-11-23 |
Family
ID=44988537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201505128U Expired - Lifetime CN202048228U (en) | 2011-05-12 | 2011-05-12 | Bidirectional adjustable shrinkage cavity device for pulverizing system powder tube of coal-fired unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202048228U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968724A (en) * | 2014-05-29 | 2014-08-06 | 上海新跃仪表厂 | Radial swing hole shrinking device used for lever micrometer and hole shrinking method thereof |
| CN104864404A (en) * | 2015-05-29 | 2015-08-26 | 国家电网公司 | Pulverized coal accumulation prevention fixing shrinkage cavity device with vertically-arranged primary air pipes for boiler coal pulverizing system |
| CN105059944A (en) * | 2015-08-14 | 2015-11-18 | 北京华清茵蓝科技有限公司 | Pneumatic conveying powder flowing speed adjusting device with adjustable double side baffle plates |
| CN106481860A (en) * | 2016-12-10 | 2017-03-08 | 游亦忠 | A kind of three protection type wind powder actuator |
| CN114261775A (en) * | 2021-11-26 | 2022-04-01 | 华能洛阳热电有限责任公司 | Bidirectional adjustable shrinkage cavity device for coal-fired unit |
-
2011
- 2011-05-12 CN CN2011201505128U patent/CN202048228U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968724A (en) * | 2014-05-29 | 2014-08-06 | 上海新跃仪表厂 | Radial swing hole shrinking device used for lever micrometer and hole shrinking method thereof |
| CN103968724B (en) * | 2014-05-29 | 2017-02-15 | 上海新跃仪表厂 | Radial swing hole shrinking device used for lever micrometer and hole shrinking method thereof |
| CN104864404A (en) * | 2015-05-29 | 2015-08-26 | 国家电网公司 | Pulverized coal accumulation prevention fixing shrinkage cavity device with vertically-arranged primary air pipes for boiler coal pulverizing system |
| CN105059944A (en) * | 2015-08-14 | 2015-11-18 | 北京华清茵蓝科技有限公司 | Pneumatic conveying powder flowing speed adjusting device with adjustable double side baffle plates |
| CN105059944B (en) * | 2015-08-14 | 2017-12-08 | 北京华清茵蓝科技有限公司 | A kind of adjustable Geldart-D particle powder flow rate adjusting means of bilateral baffle plate |
| CN106481860A (en) * | 2016-12-10 | 2017-03-08 | 游亦忠 | A kind of three protection type wind powder actuator |
| CN106481860B (en) * | 2016-12-10 | 2020-02-14 | 游亦忠 | Three-prevention type wind-powder regulator |
| CN114261775A (en) * | 2021-11-26 | 2022-04-01 | 华能洛阳热电有限责任公司 | Bidirectional adjustable shrinkage cavity device for coal-fired unit |
| CN114261775B (en) * | 2021-11-26 | 2023-12-15 | 华能洛阳热电有限责任公司 | Bidirectional adjustable shrinkage cavity device for coal-fired unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111123 |
|
| CX01 | Expiry of patent term |