CN112984497A - Superheater device suitable for variable working condition operation of boiler - Google Patents
Superheater device suitable for variable working condition operation of boiler Download PDFInfo
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- CN112984497A CN112984497A CN202110114116.8A CN202110114116A CN112984497A CN 112984497 A CN112984497 A CN 112984497A CN 202110114116 A CN202110114116 A CN 202110114116A CN 112984497 A CN112984497 A CN 112984497A
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- 238000007789 sealing Methods 0.000 claims description 14
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 230000008676 import Effects 0.000 abstract 2
- 238000005516 engineering process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 241000270295 Serpentes Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G3/00—Steam superheaters characterised by constructional features; Details of component parts thereof
- F22G3/007—Headers; Collectors, e.g. for mixing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G3/00—Steam superheaters characterised by constructional features; Details of component parts thereof
- F22G3/008—Protection of superheater elements, e.g. cooling superheater tubes during starting-up periods, water tube screens
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G3/00—Steam superheaters characterised by constructional features; Details of component parts thereof
- F22G3/009—Connecting or sealing of superheater or reheater tubes with collectors or distributors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The utility model discloses a be fit for superheater device of boiler variable working condition operation, including first superheater subassembly and second superheater subassembly, first superheater subassembly includes first superheater body, first import collection case, first export box, second superheater subassembly includes second superheater body, second import collection case, second export collection case, and this superheater device still includes air inlet pipe group, play nest of tubes and return line nest of tubes. In the practical application process, the connection mode of the first superheater assembly and the second superheater assembly can be conveniently changed by arranging the first control valve, the second control valve and the return pipe group, specifically, the first superheater assembly and the second superheater assembly can be conveniently connected in series or in parallel, so that different working conditions can be met, and the adaptability of the superheater device is optimized. In addition, the arrangement of the pressure balancer improves the stability of the superheater device in the operation process, and further improves the safety performance of the boiler in the operation process.
Description
Technical Field
The utility model relates to the technical field of boilers, especially, relate to a be fit for superheater device of boiler variable working condition operation.
Background
The superheater is also called as a steam superheater and is generally arranged at the outlet position of a hearth, and the superheater has the function of reheating saturated steam led out from a drum to a specified superheating temperature under the condition of unchanged pressure so as to meet the requirement of a production process. The superheater tube absorbs heat, is bent into snake shape by seamless boiler steel tube or heat-resisting alloy steel tube, and has two ends welded to the inlet and outlet headers.
In the prior art, the number of the superheater heating surface tube rows on the boiler is designed according to the rated working condition of the boiler, when the boiler operates under the rated working condition, the flow velocity of a working medium in the superheater is high, and at the moment, the superheater tubes can be cooled well. However, when the operating condition of the boiler changes, especially when the boiler operates at low load, the flow velocity of the working medium in the superheater tube is correspondingly reduced, and when the flow velocity is reduced to a certain value, the phenomenon of tube explosion of the superheater is easy to occur, so that the safe and economic operation of the boiler is seriously influenced.
Disclosure of Invention
The utility model provides a be fit for superheater device of boiler variable working condition operation has solved the technical problem that the superheater structure that is used for the boiler among the prior art is unreasonable, adaptability is poor.
Some embodiments adopted to solve the above technical problems include:
a superheater device suitable for variable-working-condition operation of a boiler comprises a first superheater assembly and a second superheater assembly, wherein the first superheater assembly comprises a first superheater body, a first inlet header and a first outlet box body, the second superheater assembly comprises a second superheater body, a second inlet header and a second outlet header, the superheater device further comprises an air inlet pipe assembly, an air outlet pipe assembly and a return pipe assembly, the air inlet pipe assembly comprises an air inlet main pipe, a first branch pipe and a second branch pipe, the first branch pipe and the second branch pipe are communicated with the air inlet main pipe, the air inlet main pipe is communicated with the first inlet header through the first branch pipe, the air inlet main pipe is communicated with the second inlet header through the second branch pipe, the second branch pipe is provided with a first control valve, the air outlet pipe assembly comprises an air outlet main pipe, a third branch pipe and a fourth branch pipe, the third branch pipe and the fourth branch pipe are communicated with the gas outlet main pipe, the first outlet collection box is communicated with the gas outlet main pipe through the third branch pipe, the second outlet collection box is communicated with the gas outlet main pipe through the fourth branch pipe, the third branch pipe is provided with a second control valve, the first outlet collection box is communicated with the second inlet collection box through a backflow pipe group, the backflow pipe group is provided with a third control valve, the gas outlet main pipe is provided with a pressure balancer, and the pressure balancer is connected in series with the gas outlet main pipe.
In the practical application process, the connection mode of the first superheater assembly and the second superheater assembly can be conveniently changed by arranging the first control valve, the second control valve and the return pipe group, specifically, the first superheater assembly and the second superheater assembly can be conveniently connected in series or in parallel, so that different working conditions can be met, and the adaptability of the superheater device is optimized. In addition, the arrangement of the pressure balancer improves the stability of the superheater device in the operation process, and further improves the safety performance of the boiler in the operation process.
Preferably, the pressure balancer includes a sealed box body, the box body includes a first opening communicated with the main gas outlet pipe and a second opening for discharging gas in the box body, a piston is disposed in the box body, the piston divides the box body into a first cavity and a second cavity, the first opening is communicated with the second opening through the first cavity, and the second opening is provided with a flow regulating valve for regulating gas flow in the second opening.
In the scheme, the pressure balancer has a simple structure, and the use cost of the pressure balancer is reduced.
The flow of the second opening can be adjusted through the arrangement of the flow adjusting valve, and the application performance of the pressure balancer is optimized.
Preferably, the piston includes a body and a rod fixed to the body, the rod and the body are coaxially disposed, one end of the rod penetrates through the second cavity and extends out of the tank, the pressure balancer further includes an elastic device for limiting a position of the piston, and the elastic device limits a position of the body through the rod.
Preferably, the elastic device is arranged outside the box body, the elastic device comprises a fixed seat, a sliding plate and a spring, the sliding plate is arranged on the fixed seat in a sliding mode, the fixed seat comprises a vertical plate and a base, the vertical plate and the base are arranged in parallel with the sliding plate, the spring is arranged between the vertical plate and the sliding plate, and one end of the rod body is abutted to the sliding plate.
In this scheme, the elastic device sets up outside the box, and the elastic device easy to maintain.
Preferably, the base is provided with a guide rail, the sliding plate is provided with a guide groove matched with the guide rail, and the guide groove is a dovetail groove.
In the scheme, the displacement precision of the sliding plate is high, and the stability of the pressure balancer in the working process is improved.
Preferably, the vertical plate is fixed on the base through a screw, a flanging is arranged on the vertical plate, a through hole penetrating through the screw is formed in the flanging, and a screw hole matched with the screw is formed in the base.
In the scheme, the position of the vertical plate can be adjusted, so that the elastic device can be conveniently replaced, and the pressure balancer is easy to maintain.
Preferably, the vertical plate and the sliding plate are both provided with positioning columns for positioning the springs, and two ends of each spring are respectively sleeved on the positioning columns.
In this scheme, the setting of reference column mainly plays the function to the spring direction, has prolonged the life of spring.
Preferably, the box body is provided with an assembly hole, the rod body extends out of the box body through the assembly hole, and a sealing ring is arranged between the rod body and the assembly hole.
In this scheme, the setting of sealing washer has improved the sealing performance of box.
Preferably, one end of the body, which is far away from the rod body, is provided with a guide surface, and the guide surface is an arc-shaped surface which is recessed into the body.
In the scheme, the guide surface is mainly arranged to guide the airflow, so that the use performance of the pressure balancer is optimized.
Preferably, a sealing layer is disposed on a surface of the body contacting the case, and the sealing layer is bonded to the body.
In the scheme, the arrangement of the sealing layer can reduce the leakage of gas and optimize the application performance of the pressure balancer.
Compared with the prior art, the utility model provides a be fit for superheater device of boiler variable working condition operation has following advantage:
1. this scheme can conveniently switch first superheater subassembly and second superheater subassembly's connected mode, makes first superheater subassembly, second superheater subassembly conveniently switch between establishing ties and parallelly connected to adapt to different operating modes.
2. The arrangement of the pressure balancer can effectively avoid overlarge internal pressure of the first superheater assembly and the second superheater assembly, and the stability of the superheater device in the working process is improved.
Drawings
For purposes of explanation, several embodiments of the disclosed technology are set forth in the following figures. The following drawings are incorporated herein and constitute a part of the detailed description. In some instances, well-known structures and components are shown in block diagram form in order to avoid obscuring the concepts of the disclosed subject technology.
Fig. 1 is a schematic structural diagram of the present disclosure.
Fig. 2 is a schematic diagram of the internal structure of the pressure balancer.
Fig. 3 is a schematic view of a skateboard.
In the figure, 1, a first superheater body, 11, a first inlet header, 12, a first outlet tank, 2, a second superheater body, 21, a second inlet header, 22, a second outlet tank, 3, an inlet pipe group, 31, an inlet main pipe, 32, a first branch pipe, 33, a second branch pipe, 331, a first control valve, 4, an outlet pipe group, 41, an outlet main pipe, 42, a third branch pipe, 421, a second control valve, 43, a fourth branch pipe, 5, a return pipe group, 51, a third control valve, 6, a pressure balancer, 601, a tank, 602, a first opening, 603, a second opening, 604, a piston, 605, a flow rate adjusting valve, 606, a body, 607, a rod body, 608, a fixed seat, 609, a sliding plate, 610, a spring, 611, a standing plate, 612, a base, 613, a guide groove, a sealing layer, a sealing ring, 615, a guide surface, 616, and a guide surface.
Detailed Description
The specific embodiments illustrated below are intended as descriptions of various configurations of the presently disclosed subject technology and are not intended to represent the only configurations in which the presently disclosed subject technology may be practiced. Specific embodiments include specific details for the purpose of providing a thorough understanding of the presently disclosed subject matter technology. It will be apparent, however, to one skilled in the art that the disclosed subject matter technology is not limited to the specific details shown herein and may be practiced without these specific details.
Referring to fig. 1, 2 and 3, a superheater device suitable for variable-operation boiler includes a first superheater module and a second superheater module, the first superheater module includes a first superheater body 1, a first inlet header 11 and a first outlet tank 12, the second superheater module includes a second superheater body 2606, a second inlet header 21 and a second outlet header, the superheater device further includes an inlet tube set 3, an outlet tube set 4 and a return tube set 5, wherein the inlet tube set 3 includes an inlet main tube 31 and first and second branch tubes 32 and 33, the first and second branch tubes 32 and 33 are both communicated with the inlet main tube 31, the inlet main tube 31 is communicated with the first inlet header 11 through the first branch tube 32, the inlet main tube 31 is communicated with the second inlet header 21 through the second branch tube 33, the second branch pipe 33 is provided with a first control valve 331, the outlet pipe group 4 includes an outlet main pipe 41, a third branch pipe 42 and a fourth branch pipe 43, the third branch pipe 42, the fourth branch pipe 43 all communicate with the outlet main pipe 41, the first outlet header communicates with the outlet main pipe 41 through the third branch pipe 42, the second outlet header communicates with the outlet main pipe 41 through the fourth branch pipe 43, the third branch pipe 42 is provided with a second control valve 421, the first outlet header communicates with the second inlet header 21 through the return pipe group 5, the return pipe group 5 is provided with a third control valve 51, the outlet main pipe 41 is provided with a pressure balancer 6, and the pressure balancer 6 is connected in series with the outlet main pipe 41.
The first superheater unit and the second superheater unit are conventional superheater units in the prior art, and the specific structure and configuration scheme of the first superheater unit and the second superheater unit refer to the prior art, and technical schemes in the prior art of the superheater units form a part of the specification.
The first control valve 331, the second control valve 421 and the third control valve 51 are all conventional structures in the prior art, and the installation manner thereof is referred to in the prior art.
In practice, when the third control valve 51 disposed in the backflow pipe group 5 is in a closed state, and the first control valve 331 and the second control valve 421 are both in an open state, the first superheater module and the second superheater module are in a parallel state, so as to adapt to the first operating condition.
When the third control valve 51 disposed in the return pipe group 5 is in an open state and the first control valve 331 and the second control valve 421 are in a closed state, the first superheater component and the second superheater component are connected in series to adapt to a second operating condition.
This scheme can conveniently switch the hookup mode between first superheater subassembly, the second superheater subassembly to adapt to different operating modes, optimized superheater device's adaptability.
In practice, the pressure in the first superheater unit and the second superheater unit may fluctuate, which may have an adverse effect on the stable operation of the superheater device, and for this reason, the pressure fluctuation can be effectively alleviated by providing the pressure balancer 6, which improves the stability of the superheater device during operation.
In some embodiments, the pressure balancer 6 includes a sealed box 601, the box 601 includes a first opening 602 communicating with the main outlet pipe 41 and a second opening 603 for discharging gas in the box 601, a piston 604 is disposed in the box 601, the piston 604 divides the box 601 into a first cavity and a second cavity, the first opening 602 communicates with the second opening 603 through the first cavity, and the second opening 603 is provided with a flow regulating valve 605 for regulating the flow rate of gas in the second opening 603. The case 601 may be made of a metal material, and may be formed by casting a metal material, for example. The flow control valve 605 is a conventional valve body structure in the prior art, and the specific structure and installation manner thereof refer to the prior art.
In some embodiments, the piston 604 includes a body 606 and a rod 607, the rod 607 is fixed to the body 606, the rod 607 is coaxially disposed with the body 606, one end of the rod 607 penetrates through the second cavity and extends out of the housing 601, the pressure balancer 6 further includes an elastic device defining the position of the piston 604, and the elastic device defines the position of the body 606 through the rod 607. The elastic device is disposed outside the case 601, and includes a fixing seat 608, a sliding plate 609 slidably disposed on the fixing seat 608, and a spring 610, where the fixing seat 608 includes a vertical plate 611 and a base 612 that are disposed parallel to the sliding plate 609, the spring 610 is disposed between the vertical plate 611 and the sliding plate 609, and one end of the rod 607 abuts against the sliding plate 609.
The base 612 is provided with a guide rail, the sliding plate 609 is provided with a guide groove 613 matched with the guide rail, and the guide groove 613 is a dovetail groove. The upright plate 611 is fixed on the base 612 through a screw, a flange is arranged on the upright plate 611, a through hole penetrating the screw is formed in the flange, and a screw hole matched with the screw is formed in the base 612. The vertical plate 611 and the sliding plate 609 are both provided with positioning columns for positioning the spring 610, and two ends of the spring 610 are respectively sleeved on the positioning columns. The positioning column on the sliding plate 609 and the sliding plate 609 are of an integrated structure, and the positioning column on the vertical plate 611 and the vertical plate 611 are of an integrated structure.
The box body 601 is provided with an assembly hole, the rod body 607 extends out of the box body 601 through the assembly hole, and a sealing ring 614 is arranged between the rod body 607 and the assembly hole.
One end of the body 606, which is far away from the rod 607, is provided with a guide surface 615, and the guide surface 615 is an arc surface recessed into the body 606. A sealing layer 616 is arranged on the surface of the body 606 in contact with the box body 601, and the sealing layer 616 is adhered to the body 606.
The provision of the guide surface 615 prevents the air flow from creating turbulence within the housing 601 and optimizes the performance of the pressure equaliser 6.
While the subject matter of the present disclosure and its corresponding details have been described above, it is to be understood that the above description is only illustrative of some embodiments of the subject matter of the present disclosure and that some of the details may be omitted from the detailed description.
In addition, in some of the embodiments disclosed above, there is a possibility that a plurality of embodiments may be combined and implemented, and various combinations are not listed at length. The implementation embodiments can be freely combined according to the requirements when the technical personnel in the field carry out the implementation so as to obtain better application experience.
Other configurations of details or figures may be derived by those skilled in the art in practicing the presently disclosed subject matter, as well as figures, and it will be apparent that such details are within the scope of the presently disclosed subject matter and are covered by the presently disclosed subject matter without departing from the presently disclosed subject matter.
Claims (10)
1. A superheater device suitable for variable-working-condition operation of a boiler comprises a first superheater assembly and a second superheater assembly, and is characterized in that: the first superheater assembly comprises a first superheater body (1), a first inlet header (11) and a first outlet box body (12), the second superheater assembly comprises a second superheater body (2) (606), a second inlet header (21) and a second outlet header, the superheater device further comprises an air inlet pipe group (3), an air outlet pipe group (4) and a return pipe group (5), wherein the air inlet pipe group (3) comprises an air inlet main pipe (31), a first branch pipe (32) and a second branch pipe (33), the first branch pipe (32) and the second branch pipe (33) are communicated with the air inlet main pipe (31), the air inlet main pipe (31) is communicated with the first inlet header (11) through the first branch pipe (32), the air inlet main pipe (31) is communicated with the second inlet header (21) through the second branch pipe (33), and the second branch pipe (33) is provided with a first control valve (331), the air outlet pipe group (4) comprises an air outlet main pipe (41), a third branch pipe (42) and a fourth branch pipe (43), the third branch pipe (42) and the fourth branch pipe (43) are communicated with the air outlet main pipe (41), a first outlet header passes through the third branch pipe (42) and is communicated with the air outlet main pipe (41), a second outlet header passes through the fourth branch pipe (43) and is communicated with the air outlet main pipe (41), the third branch pipe (42) is provided with a second control valve (421), the first outlet header passes through a return pipe group (5) and is communicated with a second inlet header (21), the return pipe group (5) is provided with a third control valve (51), the air outlet main pipe (41) is provided with a pressure balancer (6), and the pressure balancer (6) is connected in series with the air outlet main pipe (41).
2. The superheater device suitable for the variable-condition operation of the boiler according to claim 1, characterized in that: the pressure balancer (6) comprises a sealed box body (601), the box body (601) comprises a first opening (602) communicated with the air outlet main pipe (41) and a second opening (603) for discharging air in the box body (601), a piston (604) is arranged in the box body (601), the box body (601) is divided into a first cavity and a second cavity by the piston (604), the first opening (602) is communicated with the second opening (603) through the first cavity, and the second opening (603) is provided with a flow regulating valve (605) for regulating the flow of the air in the second opening (603).
3. The superheater device suitable for the variable-condition operation of the boiler according to claim 2, characterized in that: the piston (604) comprises a body (606) and a rod body (607), the rod body (607) is fixed on the body (606), the rod body (607) and the body (606) are coaxially arranged, one end of the rod body (607) penetrates through the second cavity and extends out of the box body (601), the pressure balancer (6) further comprises an elastic device for limiting the position of the piston (604), and the position of the body (606) is limited by the elastic device through the rod body (607).
4. The superheater device suitable for the variable-condition operation of the boiler according to claim 3, characterized in that: the elastic device is arranged outside the box body (601), the elastic device comprises a fixed seat (608), a sliding plate (609) and a spring (610), the sliding plate (609) is arranged on the fixed seat (608) in a sliding mode, the fixed seat (608) comprises a vertical plate (611) and a base (612), the vertical plate (611) and the base (612) are arranged in parallel with the sliding plate (609), the spring (610) is arranged between the vertical plate (611) and the sliding plate (609), and one end of the rod body (607) abuts against the sliding plate (609).
5. The superheater device suitable for the variable-condition operation of the boiler according to claim 4, characterized in that: the base (612) is provided with a guide rail, the sliding plate (609) is provided with a guide groove (613) matched with the guide rail, and the guide groove (613) is a dovetail groove.
6. The superheater device suitable for the variable-condition operation of the boiler according to claim 5, characterized in that: the vertical plate (611) is fixed on the base (612) through a screw, a flanging is arranged on the vertical plate (611), a through hole penetrating through the screw is formed in the flanging, and a screw hole matched with the screw is formed in the base (612).
7. The superheater device suitable for the variable-condition operation of the boiler according to claim 6, characterized in that: positioning columns for positioning the spring (610) are arranged on the vertical plate (611) and the sliding plate (609), and two ends of the spring (610) are respectively sleeved on the positioning columns.
8. The superheater device suitable for the variable-condition operation of the boiler according to claim 7, characterized in that: the novel oil pipe is characterized in that an assembly hole is formed in the box body (601), the rod body (607) extends out of the box body (601) through the assembly hole, and a sealing ring (614) is arranged between the rod body (607) and the assembly hole.
9. The superheater device suitable for the variable-condition operation of the boiler according to claim 8, characterized in that: one end, far away from the rod body (607), of the body (606) is provided with a guide surface (615), and the guide surface (615) is an arc-shaped surface recessed into the body (606).
10. The superheater device suitable for the variable-condition operation of the boiler according to claim 9, characterized in that: and a sealing layer (616) is arranged on the surface of the body (606) in contact with the box body (601), and the sealing layer (616) is adhered to the body (606).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110114116.8A CN112984497A (en) | 2021-01-27 | 2021-01-27 | Superheater device suitable for variable working condition operation of boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110114116.8A CN112984497A (en) | 2021-01-27 | 2021-01-27 | Superheater device suitable for variable working condition operation of boiler |
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| Publication Number | Publication Date |
|---|---|
| CN112984497A true CN112984497A (en) | 2021-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110114116.8A Pending CN112984497A (en) | 2021-01-27 | 2021-01-27 | Superheater device suitable for variable working condition operation of boiler |
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| CN (1) | CN112984497A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2921502Y (en) * | 2006-06-22 | 2007-07-11 | 徐万群 | Small steam boiler release valve |
| CN105588110A (en) * | 2015-12-23 | 2016-05-18 | 杭州燃油锅炉有限公司 | Superheater device adapting to operation on variable working conditions of boiler and control method thereof |
| CN209976584U (en) * | 2019-06-18 | 2020-01-21 | 苏然 | Steam turbine shaft seal steam supply adjusting device |
-
2021
- 2021-01-27 CN CN202110114116.8A patent/CN112984497A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2921502Y (en) * | 2006-06-22 | 2007-07-11 | 徐万群 | Small steam boiler release valve |
| CN105588110A (en) * | 2015-12-23 | 2016-05-18 | 杭州燃油锅炉有限公司 | Superheater device adapting to operation on variable working conditions of boiler and control method thereof |
| CN209976584U (en) * | 2019-06-18 | 2020-01-21 | 苏然 | Steam turbine shaft seal steam supply adjusting device |
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Application publication date: 20210618 |