CN113600335A - Assembling process for each part of blowing particle collector of steam pipeline of power station boiler - Google Patents
Assembling process for each part of blowing particle collector of steam pipeline of power station boiler Download PDFInfo
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- CN113600335A CN113600335A CN202110749502.4A CN202110749502A CN113600335A CN 113600335 A CN113600335 A CN 113600335A CN 202110749502 A CN202110749502 A CN 202110749502A CN 113600335 A CN113600335 A CN 113600335A
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- pipeline
- particle collector
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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
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
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- General Induction Heating (AREA)
Abstract
The invention relates to an assembly process of each part of a blowing particle collector of a steam pipeline of a power station boiler, belonging to the field of particle collectors of steam pipelines of power station boilers. The invention discloses a blowing collector for a steam pipeline of a power station boiler, which comprises a collector outer cylinder, a reducer, a junction pipe, a porous pipeline, a collector collecting pipeline, a heat insulating layer, an excitation coil, a rotary blocking plate, a power switch and an alternating current power supply, wherein the collector outer cylinder, the reducer and the junction pipe are matched with the porous pipeline; the end part of the collecting pipeline of the particle collector is fixed with a rotary blocking plate. The invention effectively intercepts, collects and discharges industrial impurities such as metal particles, welding slag and the like in the superheater, the main steam pipeline and the reheating cold section steam pipeline, and avoids the impact damage of the industrial impurities to the downstream reheater, the reheating hot section steam pipeline, pipe fittings and a steam valve.
Description
Technical Field
The invention relates to an assembly process of each part of a power station boiler steam pipeline purging particle collector, in particular to a purging particle collector of a superheater, a reheater, a main steam pipeline, a reheating cold section steam pipeline, a reheating hot section steam pipeline and a steam turbine bypass system pipeline, and belongs to the field of power station boiler steam pipeline particle collectors.
Background
The power industry standard of the people's republic of China, "steam blowing pipe guide of thermal power construction engineering units" (DL/T1269-2013); the general part is specified as follows: a one-section blowing pipe mode is adopted for the pressure stabilizing blowing pipe; the once-through boiler adopts a section of blow pipe; when a section of blow pipe is adopted, a particle collector is additionally arranged in front of a reheater.
The collector is specified as follows: 1) the design and manufacture of the particle collector meet the GB150 regulations, the design pressure is not less than 6.0MPa, the design temperature is not less than 450 ℃, and the resistance is less than 0.1 MPa; 2) the total cross-sectional area of the through flow of the particle collector is not less than 6 times of the effective cross-sectional area of the main steam pipeline; 3) the particle collector is horizontally arranged and provided with an operation platform, and is convenient to clean; 4) the collector should be installed close to the reheater; when the heat exchanger is arranged in a steam turbine room, the reheating and cooling section pipeline is required to be cleaned and is qualified after inspection and acceptance.
The invention discloses an invention patent named as a power station boiler steam blowpipe zero-resistance particle collector in Chinese patent with publication number CN110102405A of 09.08.2019. The device comprises an inlet pipe, an impurity collecting pipe, an outlet pipe, a magnet exciting coil, an iron core and a power supply; the inlet pipe is communicated with one end of the impurity collecting pipe, the outlet pipe is communicated with the other end of the impurity collecting pipe, the bottom of the impurity collecting pipe is communicated with a slag discharge pipe, the magnet exciting coil is wound on the iron core, the iron core is over against the bottom of the impurity collecting pipe, and the magnet exciting coil is connected with a power supply. The principle of the invention patent differs from the present application and the invention does not have to be dismantled as a permanent device and exists as an accessory to a piping system, which is different from the object of the invention.
Therefore, it is particularly necessary to provide various new, expanded and reconstructed thermal power generation construction projects with a single machine capacity of 300MW or more (the projects with the single machine capacity of less than 300MW can be referred to and executed), which are installed at the inlet of the reheater when a one-section blowing pipe mode is adopted, and are used for collecting metal particles, industrial garbage and the like carried by equipment in front of the reheater and for pipeline steam purging, so as to prevent industrial impurities such as metal particles, welding slag, oxide skin and the like from entering the reheater, and effectively maintain the safety of the reheater and a pipeline system behind the reheater.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the assembly process of each part of the boiler steam pipeline purging particle collector of the power station, which has the advantages of reasonable structural design, stability and reliability, effectively shortens the purging time, reduces the material consumption, lightens the environmental protection pressure, prevents industrial impurities such as metal particles, welding slag, oxide skin and the like from entering a reheater, and effectively maintains the safety of the reheater and a pipeline system behind the reheater.
The technical scheme adopted by the invention for solving the problems is as follows: the assembly process of each part of the blowing particle collector for the steam pipeline of the power station boiler comprises a particle collector outer cylinder, a large head, a small head, a short connecting pipe, a porous pipeline, a particle collector collecting pipeline, a heat insulating layer, an excitation coil, a rotary blocking plate, a flange, a water drain valve, a power switch and an alternating current power supply, wherein the particle collector outer cylinder, the large head, the small head and the short connecting pipe are matched with the porous pipeline, the excitation coil is wound on the heat insulating layer on the outer wall of the particle collector collecting pipeline, the excitation coil is connected with the alternating current power supply, and one side of the alternating current power supply is provided with the corresponding power switch; a rotary blocking plate is fixed at the end part of the collecting pipeline of the particle collector, a flange is arranged at the lower end of the collecting pipeline of the particle collector, and a water drain valve is arranged on the side surface of the collecting pipeline of the particle collector;
in order to ensure the assembly quality and the strength structure safety of the particle collector and meet the process of blowing coefficients and collection effect, the assembly process of each part is specifically controlled as follows:
(S1): four reinforcing guide rib plates are uniformly distributed, have the thickness of 6-8mm, are made of the same material as the reheat steam cold section pipeline, and are welded with the outer cylinder of the particle collector, the large and small heads, the short connecting pipes and the head of the porous pipeline in a conical mode;
(S2): the head cone of the porous pipeline is formed by rib-drawing and seam-forging, the length of the porous pipeline is more than or equal to 1m, and the distance between a downstream non-porous pipe of the porous pipeline and a blocking plate is more than 0.9 mm;
(S3): the material and the pressure bearing capacity of the blocking plate and the rotary blocking plate are the same as those of the reheat steam cold section pipeline;
(S4): eight reinforcing rib plates are uniformly distributed, the thickness of the reinforcing rib plates is 6-8mm, and the material of the reinforcing rib plates is the same as that of the reheat steam cold section pipeline;
(S5): the pressure bearing capacity and the material of the particle collector collecting pipeline are the same as those of a reheat steam cold section pipeline, the length of the particle collector collecting pipeline is more than 1mm, and the pipe diameter of the particle collector collecting pipeline is increased along with the increase of the pipe diameter of an outer barrel of the particle collector and is not less than 219 mm;
(S6): the water drain valve is opened when the heating pipe is opened, and the heating pipe is closed;
(S7): excitation coil winding is on the heat insulation layer of collection grain ware collection pipeline outer wall, and excitation coil links to each other with alternating current power supply, and excitation coil covers the insulating boot outward, and for excitation coil circular telegram production magnetic force during sweeping, adsorb debris such as the metal particles that carry in the steam in collection grain ware collection pipeline, the one-stage end of sweeping, the coil outage, magnetic force disappears, and metal impurity falls into collection grain ware collection pipeline tip, collects the rotatory closure plate of pipeline tip through collection grain ware and discharges impurity.
Compared with the prior art, the invention has the following advantages and effects: the metal particle collecting device is matched with a steam pipeline of a power station boiler for purging, and can effectively collect impurities such as metal particles, welding slag and metal scraps generated during pipeline groove machining, which are attached or left in a superheater, a main steam pipeline and a reheating section steam pipeline, through designing and installing a particle collector close to a reheater, so that industrial impurities are prevented from damaging a downstream reheater, a reheating section steam pipeline and a medium-pressure main throttle valve; in addition, the magnet exciting coil is introduced, so that fine metal particles can be absorbed into a particle collector collecting pipeline in an accelerated manner, high-temperature and high-pressure steam is prevented from carrying the fine metal particles to enter a downstream system through the perforated pipe, the purging time can be effectively shortened, the material consumption is reduced, and the environmental protection pressure is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a collector according to an embodiment of the present invention.
In the figure: the device comprises an outer cylinder of the particle collector, a reducer, a junction pipe 1, a reinforcing guide rib plate 2, a porous pipeline 3, a blocking plate 4, a reinforcing rib plate 5, a particle collector collecting pipeline 6, a heat insulating layer 7, a magnet exciting coil 8, a rotary blocking plate 9, a fastening bolt 10, a flange 11, a water drain valve 12, a power switch 13, an alternating current power supply 14 and an insulating cover 15.
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
Examples are given.
Referring to fig. 1, the steam pipeline purging particle collector for the utility boiler mainly comprises a particle collector outer cylinder, a large head, a small head, a short connecting pipe 1, a porous pipeline 3, a particle collector collecting pipeline 6, a heat insulating layer 7, an excitation coil 8, a rotary blocking plate 9, a flange 11, a water drain valve 12, a power switch 13 and an alternating current power supply 14, wherein the particle collector outer cylinder, the large head, the small head and the short connecting pipe 1 are matched with the porous pipeline 3, the excitation coil 8 is wound on the heat insulating layer 7 on the outer wall of the particle collector collecting pipeline 6, the excitation coil 8 is connected with the alternating current power supply 14, and one side of the alternating current power supply 14 is provided with the corresponding power switch 13; the end of the collecting pipeline 6 of the particle collector is fixed with a rotary blocking plate 9, the lower end of the collecting pipeline 6 of the particle collector is provided with a flange 11, and the side surface of the collecting pipeline 6 of the particle collector is provided with a water drain valve 12.
In the embodiment, a reinforcing guide rib plate 2 is arranged between the outer cylinder, the large head and the small head of the particle collector, the short connecting pipe 1 and the porous pipeline 3.
The collector duct 6 in this embodiment is connected to the rotating closure plate 9 by fastening bolts 10.
In the embodiment, a reinforcing rib plate 5 and a blocking plate 4 are arranged between the outer cylinder, the large head and the small head of the particle collector, the short connecting pipe 1 and the porous pipeline 3.
The reinforcing guide rib plate 2 in the embodiment is welded with the outer cylinder of the particle collector, the large head and the small head, the short connecting pipe 1 and the head of the porous pipeline 3 in a conical manner.
The exciting coil 8 in the present embodiment is covered with an insulating cover 15; the holes of the porous pipeline 3 are not more than 12mm, and the hole edge distance is 3-4 mm.
The selection of this embodiment collection particle ware collecting tube 6 etc., material and assembly structure, geometric dimension require and excitation coil 8 sets up etc. install the qualified collection particle ware of preparation acceptance test on being close to the reheat steam cold section pipeline of re-heater after, can carry out steam and sweep the work.
The embodiment is designed and manufactured on site or a particle collector is configured in a factory mode, impurities such as metal fragments carried by steam sweeping of a power station boiler are intercepted and collected in a particle collector collecting pipeline, industrial impurities collected in the particle collector are discharged after one-stage sweeping is finished, and damage of the industrial impurities to downstream equipment and pipeline systems such as a reheater and the like can be effectively avoided.
In order to ensure the assembly quality of the particle collector, take the strength and structure safety of the particle collector into consideration, meet the blowing coefficient and the collection effect, the assembly process of each part needs to be strictly controlled according to the following requirements:
(S1): four blocks of the reinforcing guide rib plate 2 are uniformly distributed, the thickness of the reinforcing guide rib plate is 6-8mm, the material of the reinforcing guide rib plate is the same as that of the reheat steam cold section pipeline, and the reinforcing guide rib plate is in conical welding with the outer cylinder of the particle collector, the large head and the small head of the particle collector, the short connecting pipe 1 and the head of the porous pipeline 3.
(S2): the cone at the head of the porous pipeline 3 is forged by cramping and sewing, the length of the porous pipeline 3 is more than or equal to 1 meter, and the distance between the downstream non-porous pipe of the porous pipeline 3 and the blocking plate 4 is more than 0.9 mm.
(S3): the material and the bearing capacity of the outer cylinder of the particle collector, the large and small heads, the blocking plate 4 between the short connecting pipe 1 and the porous pipeline 3 and the rotary blocking plate 9 at the end of the particle collector collecting pipeline 6 are the same as those of the reheat steam cold section pipeline.
(S4): eight pieces of reinforcing rib plates 5 are uniformly distributed between the outer cylinder of the particle collector, the large and small heads, the short connecting pipe 1 and the porous pipeline 3, the thickness of the reinforcing rib plates is 6-8mm, and the material of the reinforcing rib plates is the same as that of the reheat steam cold section pipeline.
(S5): the particle collector collecting pipeline 6 has the same pressure bearing capacity and material as the reheat steam cold section pipeline, the length is greater than 1mm, and the pipe diameter is increased along with the increase of the pipe diameters of the particle collector outer cylinder, the reducer and the connecting short pipe 1 and is not less than 219 mm.
(S6): and a water drain valve 12 is opened when the pipe is heated, and the pipe is closed when the pipe is heated.
(S7): excitation coil 8 twines on 6 outer wall heat insulation layers 7 of particle collector collection pipeline, excitation coil 8 links to each other with alternating current power supply 14, excitation coil 8 covers insulating boot 15 outward, it produces magnetic force to energize excitation coil 8 during sweeping, adsorb debris such as the metal particles that carry in the steam in particle collector collection pipeline 6, the one-stage end of sweeping, the coil outage, magnetic force disappears, metal impurity falls into 6 tip of particle collector collection pipeline, discharge impurity through the rotatory closure plate 9 of 6 tip of particle collector collection pipeline.
This embodiment power plant boiler steam pipeline sweeps uses particle collector, through the application of particle collector, can effectively intercept, collect and discharge industrial impurity such as metal particle, welding slag in superheater, main steam pipeline and the reheat cold section steam line, avoid industrial impurity to the impact damage of low reaches reheater, reheat hot section steam line and pipe fitting, valve.
And will be apparent to those skilled in the art from the foregoing description.
In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an illustration of the structure of the present invention. Equivalent or simple changes in the structure, characteristics and principles of the invention are included in the protection scope of the patent. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (1)
1. A technology for assembling each part of a blowing particle collector of a steam pipeline of a power station boiler comprises a particle collector outer cylinder, a large and small head, a short connecting pipe (1), a porous pipeline (3), a particle collector collecting pipeline (6), a heat insulating layer (7), an excitation coil (8), a rotary blocking plate (9), a flange (11), a water drain valve (12), a power switch (13) and an alternating current power supply (14), wherein the particle collector outer cylinder, the large and small head and the short connecting pipe (1) are matched with the porous pipeline (3), the excitation coil (8) is wound on the heat insulating layer (7) on the outer wall of the particle collector collecting pipeline (6), the excitation coil (8) is connected with the alternating current power supply (14), and one side of the alternating current power supply (14) is provided with the corresponding power switch (13); a rotary blocking plate (9) is fixed at the end part of the particle collector collecting pipeline (6), a flange (11) is arranged at the lower end of the particle collector collecting pipeline (6), and a water drain valve (12) is arranged on the side surface of the particle collector collecting pipeline (6);
in order to ensure the assembly quality and the strength structure safety of the particle collector and meet the process of blowing coefficients and collection effect, the assembly process of each part is specifically controlled as follows:
(S1): four blocks of the reinforcing guide rib plate (2) are uniformly distributed, have the thickness of 6-8mm, are made of the same material as the reheat steam cold section pipeline, and are welded with the outer cylinder of the particle collector, the large head and the small head, the short connecting pipe (1) and the head of the porous pipeline (3) in a conical mode;
(S2): the head cone of the porous pipeline (3) is forged by ribbing and sewing, the length of the porous pipeline (3) is more than or equal to 1m, and the distance between a downstream non-porous pipe of the porous pipeline (3) and the blocking plate (4) is more than 0.9 mm;
(S3): the material and the pressure bearing capacity of the blocking plate (4) and the rotary blocking plate (9) are the same as those of the reheat steam cold section pipeline;
(S4): eight reinforcing rib plates (5) are uniformly distributed, the thickness of the reinforcing rib plates is 6-8mm, and the material of the reinforcing rib plates is the same as that of the reheat steam cold section pipeline;
(S5): the pressure bearing capacity and the material of the particle collector collecting pipeline (6) are the same as those of a reheat steam cold section pipeline, the length is more than 1mm, and the pipe diameter is increased along with the increase of the pipe diameter of an outer cylinder of the particle collector and is not less than 219 mm;
(S6): a water drain valve (12) is opened when the pipe is heated, and the pipe is closed after heating;
(S7): excitation coil (8) winding is on heat insulation layer (7) of collection grain ware collecting tube way (6) outer wall, excitation coil (8) link to each other with alternating current power supply (14), excitation coil (8) cover insulating boot (15) outward, give excitation coil (8) circular telegram during sweeping and produce magnetic force, adsorb debris such as metal particles that carry in the steam in collection grain ware collecting tube way (6), the one-stage is swept and is ended, the coil outage, magnetic force disappears, metal impurities falls into collection grain ware collecting tube way (6) tip, rotatory closure plate (9) through collection grain ware collecting tube way (6) tip are discharged impurity.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110749502.4A CN113600335A (en) | 2021-07-02 | 2021-07-02 | Assembling process for each part of blowing particle collector of steam pipeline of power station boiler |
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| CN202110749502.4A CN113600335A (en) | 2021-07-02 | 2021-07-02 | Assembling process for each part of blowing particle collector of steam pipeline of power station boiler |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07225006A (en) * | 1994-02-15 | 1995-08-22 | Showa Netsugaku Kogyo Kk | Treating apparatus for product in boiler |
| CN203770941U (en) * | 2014-03-25 | 2014-08-13 | 中国能源建设集团安徽电力建设第一工程公司 | Particle collector |
| CN110102405A (en) * | 2019-05-28 | 2019-08-09 | 西安热工研究院有限公司 | A kind of zero resistance granulating device of station boiler steam-line blowing |
| CN210497504U (en) * | 2019-06-10 | 2020-05-12 | 连云港市泰格电力设备有限公司 | Pipeline sweeps collection grain ware |
-
2021
- 2021-07-02 CN CN202110749502.4A patent/CN113600335A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07225006A (en) * | 1994-02-15 | 1995-08-22 | Showa Netsugaku Kogyo Kk | Treating apparatus for product in boiler |
| CN203770941U (en) * | 2014-03-25 | 2014-08-13 | 中国能源建设集团安徽电力建设第一工程公司 | Particle collector |
| CN110102405A (en) * | 2019-05-28 | 2019-08-09 | 西安热工研究院有限公司 | A kind of zero resistance granulating device of station boiler steam-line blowing |
| CN210497504U (en) * | 2019-06-10 | 2020-05-12 | 连云港市泰格电力设备有限公司 | Pipeline sweeps collection grain ware |
Non-Patent Citations (1)
| Title |
|---|
| 刘永贵: "《锅炉本体安装》", 中国电力出版社 * |
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