CN110633495A - Design method of high-temperature electric dust remover structure - Google Patents
Design method of high-temperature electric dust remover structure Download PDFInfo
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- CN110633495A CN110633495A CN201910730707.0A CN201910730707A CN110633495A CN 110633495 A CN110633495 A CN 110633495A CN 201910730707 A CN201910730707 A CN 201910730707A CN 110633495 A CN110633495 A CN 110633495A
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- 239000000428 dust Substances 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 29
- 239000010959 steel Substances 0.000 claims abstract description 29
- 238000005457 optimization Methods 0.000 claims abstract description 11
- 238000012821 model calculation Methods 0.000 claims abstract description 8
- 238000005094 computer simulation Methods 0.000 claims abstract description 5
- 238000004364 calculation method Methods 0.000 claims description 8
- 239000012716 precipitator Substances 0.000 claims description 5
- 238000004590 computer program Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 239000012717 electrostatic precipitator Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
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Abstract
The invention discloses a design method of a high-temperature electric dust remover structure. The invention relates to a design method of a high-temperature electric dust remover structure, which comprises the following steps: firstly, establishing a three-dimensional model of the electric dust collector according to an actual structural form to form an independent closed system; then various structural stresses are input, and the structural strength of the electric dust collector is adapted to a high-temperature working environment through model calculation and structure model selection optimization. The invention has the beneficial effects that: according to the invention, through computer modeling and special structural design, the structure of the high-temperature electric dust collector is optimized, the stability of the shell stand column is enhanced, the anti-deformation capability of the shell of the dust collector is enhanced, and wind load, temperature load and the effect of internal negative pressure on the dust collector during the operation of equipment can be better resisted. And the shell upright post is connected with the steel pipe support in the electric dust removal, so that a stable structural system can be formed.
Description
Technical Field
The invention relates to the field of high-temperature electric dust collectors, in particular to a design method of a high-temperature electric dust collector structure.
Background
The dust remover is a high-efficiency dust removing device for trapping fine dust, and is a device for separating solid particles from air flow by using high-voltage direct current so as to purify dust-containing flue gas. The electric dust collector consists of an electric dust collector body, an electric control device and a support frame. The electric dust collector body is composed of an inlet reducer pipe, an outlet reducer pipe, a shell frame, an ash bucket, a wallboard, a pipeline and heat insulation. (refer to FIG. 1)
The casing of electrostatic precipitator can be divided into two parts, and one part is the steel framework that bears the whole structure weight of electrostatic precipitator and outside additional load, and another part is for the space to seal, forms an independent electrostatic precipitator environment's reinforced wallboard, and there is the heat preservation the wallboard outside. The steel frame is composed of a combined box beam at the upper part, upright posts, ring beams and inter-post supports. The shell not only needs to have enough strength, rigidity and tightness requirements, but also needs to consider the requirement of thermal deformation under the working environment, so that the support at the lower part of the electric dust collector cannot be fixedly connected with the supporting frame, but only one point is fixedly connected, and other points adopt sliding supports in various forms.
The main body of the electric dust collector is a large-scale steel structure device, and has the characteristics of complex structure, more internal components, multiple load combined action, large indoor and outdoor working temperature difference and the like. For the reasons, the traditional design method is to use a material mechanics method to perform simple checking calculation after greatly simplifying the structure of the electric dust collector, so that the material is wasted to a certain extent and is unreasonable, and the shell of the electric dust collector is the key point for performing structural optimization.
The traditional technology has the following technical problems:
for a high-temperature electric dust collector, the high temperature of hundreds of degrees causes structural expansion deformation during working, the traditional middle and low temperature structural design model and the traditional method cannot meet the requirement of the working state on the structural strength, the shell structure is easily deformed and torn, the structure of the dust collector is damaged, and serious safety risk is caused. And thus, changes to the conventional structure design method are required.
Disclosure of Invention
The invention aims to provide a design method of a high-temperature electric dust remover structure.
In order to solve the technical problem, the invention provides a design method of a high-temperature electric dust remover structure, which comprises the following steps:
firstly, establishing a three-dimensional model of the electric dust collector according to an actual structural form to form an independent closed system;
then various structural stresses are input, and the structural strength of the electric dust collector is adapted to a high-temperature working environment through model calculation and structure model selection optimization.
In one embodiment, the input of various structural stresses includes stresses resulting from high temperature thermal expansion.
In one embodiment, various structural stresses are input, and the structural strength of the electric dust collector is adapted to a high-temperature working environment through model calculation and structural model selection optimization; "comprises:
through computer modeling and special structural design, the structural form of the column is optimized: the distance between the horizontally connected angle steels is about 2000, the position of the middle angle steel L160X100X10 is unchanged, the model is replaced by L140X90X10 due to small stress, and the angle steel L75X50X6 is supported obliquely instead.
In one embodiment, various structural stresses are input, and the structural strength of the electric dust collector is adapted to a high-temperature working environment through model calculation and structural model selection optimization; "comprises:
the top cross beam of the dust remover shell is optimized, the strength and the stability of the original cross beam adopting channel steel C32a cannot meet the requirements, the structure is adjusted into a box-shaped beam structure which is formed by double-spliced channel steel C32a into 320X320, and the load bearing capacity of the beam is greatly improved.
In one embodiment, the step of establishing the three-dimensional model of the electric dust remover according to the actual structural form comprises the following steps: and (4) establishing the bottom beams, the shell upright columns, the top beams and the wall surface sealing plates in the model according to the actual cross section size.
In one embodiment, the step of establishing the three-dimensional model of the electric dust remover according to the actual structural form comprises the following steps: the anode system acts on a girder at the top of the dust remover according to linear load, and then the structure calculation is carried out under the action of wind load and temperature load.
In one embodiment, the step of establishing the three-dimensional model of the electric dust remover according to the actual structural form comprises the following steps: the cathode system acts on a girder at the top of the dust remover according to linear load, and then the structure calculation is carried out under the action of wind load and temperature load.
A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of any of the methods when executing the program.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of any of the methods.
A processor for running a program, wherein the program when running performs any of the methods.
The invention has the beneficial effects that:
according to the invention, through computer modeling and special structural design, the structure of the high-temperature electric dust collector is optimized, the stability of the shell stand column is enhanced, the anti-deformation capability of the shell of the dust collector is enhanced, and wind load, temperature load and the effect of internal negative pressure on the dust collector during the operation of equipment can be better resisted. And the shell upright post is connected with the steel pipe support in the electric dust removal, so that a stable structural system can be formed.
Drawings
FIG. 1 is a diagram showing the structure of a conventional dust collector in the method for designing the structure of the high-temperature electric dust collector of the invention.
FIG. 2 is a schematic three-dimensional model of the existing dust collector in the design method of the high-temperature electric dust collector structure of the invention.
FIG. 3 is a schematic diagram of structural optimization in the design method of the high-temperature electric precipitator structure of the invention.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
Because the high-temperature electric dust remover is usually used in front of the denitration reactor as pre-dedusting equipment, the temperature of flue gas passing through the inside of the electric dust remover is higher and can reach about 420 ℃, and the expansion deformation of the dust remover in the horizontal and vertical directions during working is larger, so that the integral deformation and the local tearing are easily caused.
The invention optimizes the structural form of the dust remover frame mainly through a unique structural design model and a calculation method, and solves the deformation problem of the electric dust removal stand column.
In order to truly simulate the stress of electric precipitation, a three-dimensional model is established for the electric precipitation according to an actual form, and a bottom beam, a shell upright post, a top beam and a wall surface sealing plate are established in the model according to actual section sizes to form an independent closed system. And the anode system and the cathode system act on a girder at the top of the dust remover according to linear load, and then the wind load and the temperature load are added to carry out structural calculation.
According to the calculation structure, when the dust remover works in a cold state, namely, when no temperature difference exists, the stress of the shell frame of the dust remover is very small, and the actual stress of the beam column does not reach the allowable stress; when the temperature of the dust remover rises to 100 ℃, the stress of the shell frame rises linearly, and when the temperature rises to 420 ℃, the shell upright post and the top cross beam exceed the allowable stress value. (the electric precipitation shell model is shown in figure 2)
Firstly, a three-dimensional model is built for the electric dust collector according to an actual structural form, and a bottom beam, a shell upright post, a top beam and a wall surface sealing plate are built in the model according to actual section sizes to form an independent closed system. Then various structural stresses, particularly stresses formed by high-temperature thermal expansion, are input, and the structural strength of the electric dust collector is adapted to a high-temperature working environment through model calculation and structural model selection optimization.
The existing dust remover shell structure: the side columns and the middle upright columns are formed by splicing two I-shaped steels I32 b, the inlet and outlet top beams and the middle top beam are welded into a box-shaped beam by steel plates, a porcelain bushing for cathode vibration is placed in the middle of the box-shaped beam, the side columns and the middle upright columns are connected and reinforced by angle steel L160X100X10/L75X50X6, and the reinforcing angle steel is horizontally arranged at intervals of 800-2000. Through computer modeling and special structural design, the structural form of the column is optimized: the distance between the horizontally connected angle steels is about 2000, the position of the middle angle steel L160X100X10 is unchanged, the model is replaced by L140X90X10 due to small stress, and the angle steel L75X50X6 is supported obliquely instead, as shown in fig. 3.
The optimized structure has unchanged strength, greatly improved integral lateral movement resisting rigidity and more reasonable structure.
Secondly, the top beam of the dust remover shell is optimized, the original beam adopts channel steel C32a, the strength and the stability of the channel steel do not meet the requirements, the channel steel is adjusted to be a box-shaped beam structure made of double-spliced channel steel C32a into 320X320, and the load bearing capacity of the beam is greatly improved. The top girder meets the load requirement without adjustment because the cross section is larger.
The optimized shell structure can meet the load stress after being recalculated by software, so that the structure optimization is reasonable and reliable.
When the shell upright post is manufactured, the upright post and angle steel L140X90X10 in the horizontal direction are welded and fixed in an electric welding mode, then 5mm shell steel plates are welded firmly, and finally the angle steel of the inclined strut is welded to form the combined upright post.
And after welding, detecting whether the deformation of the combined upright is within a specified allowable range, straightening the upright if the deformation of the combined upright is out of the range until the deformation of the combined upright is within the allowable range, and checking to be qualified.
It is noted that all length dimensions in this application are in units of mm.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (10)
1. A design method of a high-temperature electric dust remover structure is characterized by comprising the following steps:
firstly, a three-dimensional model is built for the electric dust collector according to an actual structure form to form an independent closed system.
Then various structural stresses are input, and the structural strength of the electric dust collector is adapted to a high-temperature working environment through model calculation and structure model selection optimization.
2. The method of claim 1, wherein the input stresses include stresses caused by thermal expansion at high temperatures.
3. The design method of the high-temperature electric precipitator structure of claim 1, wherein, various structural stresses are input, and the structural strength of the electric precipitator is adapted to the high-temperature working environment through model calculation and structure type selection optimization; "comprises:
through computer modeling and special structural design, the structural form of the column is optimized: the distance between the horizontally connected angle steels is about 2000, the position of the middle angle steel L160X100X10 is unchanged, the model is replaced by L140X90X10 due to small stress, and the angle steel L75X50X6 is supported obliquely instead.
4. The design method of the high-temperature electric precipitator structure of claim 1, wherein, various structural stresses are input, and the structural strength of the electric precipitator is adapted to the high-temperature working environment through model calculation and structure type selection optimization; "comprises:
the top cross beam of the dust remover shell is optimized, the strength and the stability of the original cross beam adopting channel steel C32a cannot meet the requirements, the structure is adjusted into a box-shaped beam structure which is formed by double-spliced channel steel C32a into 320X320, and the load bearing capacity of the beam is greatly improved.
5. The design method of the high-temperature electric dust remover structure as claimed in claim 1, wherein the step of establishing the three-dimensional model of the electric dust remover according to the actual structure form comprises the following steps: and (4) establishing the bottom beams, the shell upright columns, the top beams and the wall surface sealing plates in the model according to the actual cross section size.
6. The design method of the high-temperature electric dust remover structure as claimed in claim 1, wherein the step of establishing the three-dimensional model of the electric dust remover according to the actual structure form comprises the following steps: the anode system acts on a girder at the top of the dust remover according to linear load, and then the structure calculation is carried out under the action of wind load and temperature load.
7. The design method of the high-temperature electric dust remover structure as claimed in claim 1, wherein the step of establishing the three-dimensional model of the electric dust remover according to the actual structure form comprises the following steps: the cathode system acts on a girder at the top of the dust remover according to linear load, and then the structure calculation is carried out under the action of wind load and temperature load.
8. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the method of any of claims 1 to 7 are implemented when the program is executed by the processor.
9. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 7.
10. A processor, characterized in that the processor is configured to run a program, wherein the program when running performs the method of any of claims 1 to 7.
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| CN202438220U (en) * | 2012-02-22 | 2012-09-19 | 洁华控股股份有限公司 | Contour plate high-temperature dust remover |
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| CN204386198U (en) * | 2014-12-25 | 2015-06-10 | 安徽伟宏钢结构集团股份有限公司 | A kind of steel latticed structures bracing or strutting arrangement |
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| CN106799094A (en) * | 2017-01-22 | 2017-06-06 | 江南大学 | A kind of dust collector box body H-shaped section Column stability enhancing construction and method |
| CN206428986U (en) * | 2017-01-16 | 2017-08-22 | 中建三局集团有限公司 | A kind of detachable turnover type support jig |
| CN107633121A (en) * | 2017-09-08 | 2018-01-26 | 广州电力设计院 | Steel tower reinforced liner construction method based on BIM |
| CN109359353A (en) * | 2018-09-29 | 2019-02-19 | 共享智能铸造产业创新中心有限公司 | A kind of machine pillar optimum structure design method based on topological optimization |
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2019
- 2019-08-08 CN CN201910730707.0A patent/CN110633495A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202438220U (en) * | 2012-02-22 | 2012-09-19 | 洁华控股股份有限公司 | Contour plate high-temperature dust remover |
| CN102779211A (en) * | 2012-07-31 | 2012-11-14 | 上海理工大学 | Optimal design method of smoke box structure of large electric precipitator |
| CN204386198U (en) * | 2014-12-25 | 2015-06-10 | 安徽伟宏钢结构集团股份有限公司 | A kind of steel latticed structures bracing or strutting arrangement |
| CN105488292A (en) * | 2015-12-14 | 2016-04-13 | 中广核工程有限公司 | Method and system for evaluating structural performance of high-temperature valve based on valve simulation model |
| CN206428986U (en) * | 2017-01-16 | 2017-08-22 | 中建三局集团有限公司 | A kind of detachable turnover type support jig |
| CN106799094A (en) * | 2017-01-22 | 2017-06-06 | 江南大学 | A kind of dust collector box body H-shaped section Column stability enhancing construction and method |
| CN107633121A (en) * | 2017-09-08 | 2018-01-26 | 广州电力设计院 | Steel tower reinforced liner construction method based on BIM |
| CN109359353A (en) * | 2018-09-29 | 2019-02-19 | 共享智能铸造产业创新中心有限公司 | A kind of machine pillar optimum structure design method based on topological optimization |
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| CB03 | Change of inventor or designer information |
Inventor after: Zhang Xiaoliang Inventor after: Zhang Jingya Inventor before: Zhang Jingya Inventor before: Shen Tianqi |
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Application publication date: 20191231 |
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