CN220303623U - Desuperheater for combined cycle gas turbine generator set - Google Patents
Desuperheater for combined cycle gas turbine generator set Download PDFInfo
- Publication number
- CN220303623U CN220303623U CN202322056893.9U CN202322056893U CN220303623U CN 220303623 U CN220303623 U CN 220303623U CN 202322056893 U CN202322056893 U CN 202322056893U CN 220303623 U CN220303623 U CN 220303623U
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- CN
- China
- Prior art keywords
- outer cylinder
- gas turbine
- desuperheater
- combined cycle
- arc piece
- Prior art date
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- 239000007921 spray Substances 0.000 claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000010248 power generation Methods 0.000 claims abstract description 8
- 238000005507 spraying Methods 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 230000000712 assembly Effects 0.000 claims description 10
- 238000000429 assembly Methods 0.000 claims description 10
- 238000011144 upstream manufacturing Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000001603 reducing effect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 101150114468 TUB1 gene Proteins 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model relates to the technical field of gas turbine generator set equipment, in particular to a desuperheater for a combined cycle gas turbine generator set. A desuperheater for a combined cycle gas turbine power generation unit, comprising: an outer cylinder; the spray heads are spirally distributed on the outer cylinder along the steam flow direction in the outer cylinder, one end of each spray head is suitable for being connected with a water supply pipeline, and the other end of each spray head is communicated into the outer cylinder and is suitable for spraying water into the outer cylinder; the sleeve is sleeved on the periphery of the spray head and is respectively in sealing connection with the outer wall of the spray head and the outer cylinder. The utility model provides a desuperheater for a combined cycle gas turbine generator set, which can improve the cooling effect on high-temperature high-pressure steam.
Description
Technical Field
The utility model relates to the technical field of gas turbine generator set equipment, in particular to a desuperheater for a combined cycle gas turbine generator set.
Background
The combined cycle gas turbine is widely applied power generation equipment at present, and has the advantages of quick start and stop, energy conservation and environmental protection. The combined cycle gas turbine has the characteristics of quick start-stop and load change, the steam in the steam pipeline often shows overtemperature signs, and a water spraying attemperator is generally adopted to greatly cool the steam. Because the combined cycle gas generator set is generally compact in arrangement, after a large amount of temperature reduction water is sprayed out by adopting the existing water spraying attemperator, a pipeline behind the water spraying attemperator is extremely easy to generate cold and hot fatigue cracks due to large temperature difference; meanwhile, a large amount of desuperheating water is sprayed at a time, so that poor atomization effect of the desuperheating water can be caused, the generation of cold and hot fatigue cracks of a pipeline behind the desuperheater is further aggravated, and the cooling effect on high-temperature and high-pressure steam is reduced.
Disclosure of Invention
Therefore, the technical problem to be solved by the utility model is to overcome the defect that the temperature reducing effect of the temperature reducer on the high-temperature high-pressure steam in the prior art is poor, so as to provide the temperature reducer for the combined cycle gas turbine generator set, which can improve the temperature reducing effect on the high-temperature high-pressure steam.
In order to solve the technical problem, the utility model provides a desuperheater for a combined cycle gas turbine generator set, comprising:
an outer cylinder;
the spray heads are spirally distributed on the outer cylinder along the steam flow direction in the outer cylinder, one end of each spray head is suitable for being connected with a water supply pipeline, and the other end of each spray head is communicated into the outer cylinder and is suitable for spraying water into the outer cylinder;
the sleeve is sleeved on the periphery of the spray head and is respectively in sealing connection with the outer wall of the spray head and the outer cylinder.
Optionally, a temperature detector is arranged on the side wall of the sleeve facing the steam.
Optionally, the nozzle inserts the tip seal in the urceolus to a plurality of through-holes have been seted up on the lateral wall that deviates from steam, the sleeve pipe with be equipped with the breach on the lateral wall that the through-hole corresponds, so that rivers are passed through in proper order through-hole and breach blowout.
Optionally, the sleeve is welded with the outer wall of the spray head through a first seal head, and the outer cylinder is welded with the sleeve.
Optionally, an inner liner is further sleeved in the outer cylinder at intervals, the inner liner is close to the upstream position of steam, at least three fixing components are circumferentially arranged on the outer cylinder and the inner liner, the fixing components are suitable for fixedly connecting the outer cylinder and the inner liner, at least three supporting components are circumferentially arranged on the outer cylinder and the inner liner, the outer cylinder is close to the downstream position of steam, and the supporting components are suitable for supporting the inner liner in the outer cylinder at intervals.
Optionally, the fixed subassembly includes first fixed arc piece, the fixed arc piece of second and fastener, first fixed arc piece and the fixed arc piece of second weld respectively in on urceolus and the lining cylinder, the fastener both ends weld respectively in on the fixed arc piece of first fixed arc piece and the fixed arc piece of second.
Optionally, the support assembly includes a third fixed arc piece and a support piece, the third fixed arc piece is welded on the inner wall of the lining barrel, one end of the support piece is welded on the third fixed arc piece, and the other end of the support piece is abutted on the inner wall of the outer barrel.
The technical scheme of the utility model has the following advantages:
1. the utility model provides a desuperheater for a combined cycle gas turbine generator set, which comprises an outer cylinder, at least three spray heads and a sleeve, wherein the spray heads are spirally distributed on the outer cylinder along the steam flow direction in the outer cylinder, one end of each spray head is suitable for being connected with a water supply pipeline, and the other end of each spray head is communicated into the outer cylinder and is suitable for spraying water into the outer cylinder; the sleeve is sleeved on the periphery of the spray head, and the sleeve is respectively connected with the outer wall of the spray head and the outer cylinder in a sealing way. At least three spray heads spirally distributed on the outer cylinder spray water to different positions in the outer cylinder at the same time so as to synchronously cool high-temperature steam in the outer cylinder, thereby realizing uniform and stable cooling of the high-temperature steam and improving cooling effect; in addition, the outside of the spray head is respectively in sealing connection with the outer wall of the spray head and the outer cylinder through the sleeve, so that the spray head is prevented from directly contacting high-temperature steam in the outer cylinder and is impacted by the steam, the normal work of the spray head is ensured, and meanwhile, the leakage of the high-temperature steam in the outer cylinder is also avoided.
2. According to the attemperator for the combined cycle gas turbine generator set, the side wall, facing steam, of the sleeve is provided with the temperature detector, and the temperature of steam in the outer barrel is measured through the temperature detector, so that the water spraying amount of the spray head is adjusted according to the temperature of the steam, and the cooling efficiency of high-temperature steam in the outer barrel is improved.
3. The attemperator for the combined cycle gas turbine generator set provided by the utility model is characterized in that an inner lining cylinder is sleeved in the outer cylinder at intervals, at least three fixing components are circumferentially arranged near the upstream position of steam, the fixing components are suitable for fixedly connecting the outer cylinder and the inner lining cylinder, at least three supporting components are circumferentially arranged near the downstream position of steam, and the supporting components are suitable for supporting the inner lining cylinder in the outer cylinder at intervals. The lining cylinder is sleeved in the outer cylinder, so that the heat of high-temperature steam in the outer cylinder is prevented from being transferred to the wall of the outer cylinder, and scalding to a human body is prevented; simultaneously, the fixing component and the supporting component are respectively arranged on the axial direction of the outer cylinder and the axial direction of the inner lining cylinder, so that the deformation of the inner lining cylinder caused by thermal expansion can be avoided.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of a desuperheater for a combined cycle gas turbine power generation assembly provided by the present utility model;
FIG. 2 is a cross-sectional view of the attachment of the spray head to the outer cartridge wall provided by the present utility model;
FIG. 3 is a cross-sectional view at A in FIG. 1;
fig. 4 is a cross-sectional view at B in fig. 1.
Reference numerals illustrate:
1. an outer cylinder; 2. a spray head; 3. a sleeve; 4. a temperature measurer; 5. a through hole; 6. a first end socket; 7. a support; 8. a liner; 9. a fixing assembly; 10. a support assembly; 11. a first fixed arc piece; 12. a second fixed arc piece; 13. a fastener; 14. and a third fixed arc piece.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
In one embodiment of a desuperheater for a combined cycle gas turbine power plant as shown in fig. 1-4, the combined cycle gas turbine power plant is susceptible to overtemperature of a pipe section during operation, and therefore, high temperature steam in the pipe section needs to be cooled, and the desuperheater of this embodiment comprises an outer barrel 1, at least three spray heads 2 and a sleeve 3.
As shown in fig. 1, the steam flow direction in the outer cylinder 1 is from the C flow direction to the D flow direction, an inner lining cylinder 8 is sleeved in the outer cylinder 1 at intervals, the outer cylinder 1 and the inner lining cylinder 8 are annular cylinders, and the inner lining cylinder 8 is sleeved in the outer cylinder 1, so that the heat of high-temperature steam in the outer cylinder 1 is prevented from being transferred to the wall of the outer cylinder 1, and scalding to a human body is prevented; at least three fixing assemblies 9 are circumferentially and equally arranged at the position close to the upstream of steam, namely at the position A in the figure, the outer cylinder 1 and the inner liner 8, as shown in figure 3, the fixing assemblies 9 comprise a first fixing arc piece 11, a second fixing arc piece 12 and a fastening piece 13, the first fixing arc piece 11 and the second fixing arc piece 12 are respectively welded on the inner walls of the outer cylinder 1 and the inner liner 8, the first fixing arc piece 11 and the second fixing arc piece 12 are arc steel sheets, the fastening piece 13 vertically passes through the first fixing arc piece 11 and the second fixing arc piece 12, two ends are respectively welded on the first fixing arc piece 11 and the second fixing arc piece 12, the fastening piece 13 is a bolt, and the outer cylinder 1 and the inner liner 8 can be fixedly connected on the upstream side of steam through the fixing assemblies 9; at least three support assemblies 10 are circumferentially and equally arranged at the position close to the downstream of steam, namely at the position B in the drawing, the outer cylinder 1 and the inner lining cylinder 8, each support assembly 10 comprises a third fixed arc piece 14 and a support piece 7, each third fixed arc piece 14 is welded on the inner wall of the inner lining cylinder 8, each third fixed arc piece 14 is an arc-shaped steel sheet, each support piece 7 is vertically arranged on each third fixed arc piece 14 in a penetrating mode, one end of each support piece is welded on each third fixed arc piece 14, the other end of each support piece is abutted to the inner wall of the outer cylinder 1, and therefore the inner lining cylinder 8 is supported in the outer cylinder 1 at intervals through each support assembly 10. The fixing component 9 and the supporting component 10 are respectively arranged on the outer cylinder 1 and the inner liner 8 in the axial direction, so that the inner liner 8 can be prevented from being deformed due to thermal expansion, and the service reliability and stability of the device can be improved.
The spray heads 2 are spirally distributed on the outer cylinder 1 along the steam flow direction in the outer cylinder 1, that is, a plurality of spray heads 2 are distributed at intervals along the axial direction of the outer cylinder 1, and the positions in the radial direction are not overlapped so as to spray water from different angles. One end of the spray head 2 is connected with a water supply pipeline, the water supply pipeline is used for conveying the temperature-reduced water into the spray head 2, the other end of the spray head is introduced into the outer cylinder 1 so as to spray water into the outer cylinder 1, thereby cooling the high-temperature steam in the outer cylinder 1, uniformly and stably cooling the high-temperature steam through the spray heads 2 which are spirally distributed, improving the cooling effect, reducing the thermal stress of the system, prolonging the service life of the equipment and improving the reliability and safety of the equipment. As shown in fig. 2, the end portion of the nozzle 2 inserted into the outer cylinder 1 is sealed, and a plurality of through holes 5 are formed in the side wall facing away from the steam, namely, the side wall near the D side in fig. 2, and notches are formed in the side wall of the sleeve 3 corresponding to the through holes 5, so that water flows sequentially through the through holes 5 and the notches to be sprayed out.
The periphery of shower nozzle 2 is located to sleeve pipe 3 cover to avoid C side stream to flow the high temperature steam of shower nozzle 2 to cause the damage to shower nozzle 2, sleeve pipe 3 and the outer wall of shower nozzle 2 pass through first head 6 welded connection, and first head 6 is the steel sheet, urceolus 1 and sleeve pipe 3 welded connection, in order to realize sleeve pipe 3 respectively with shower nozzle 2 outer wall and urceolus 1 sealing connection, avoid the high temperature steam leakage in the urceolus 1. As shown in fig. 2, a temperature detector 4, i.e. a side C in the drawing, is arranged on the side wall of the sleeve 3 facing the steam, and the temperature of the steam in the outer barrel 1 is measured by the thermocouple, so that the temperature-reducing water quantity sprayed out by the spray head 2 is adjusted according to the temperature of the steam, and the temperature-reducing efficiency of the high-temperature steam in the outer barrel 1 is improved.
As an alternative embodiment, three or more spray heads 2 may also be spirally distributed along the flow direction of the steam in the outer tub 1.
As an alternative embodiment, the outer cylinder 1 and the inner liner 8 may also be circumferentially fitted with six fixing assemblies 9 and six support assemblies 10.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.
Claims (7)
1. A desuperheater for a combined cycle gas turbine power generation assembly, comprising:
an outer cylinder (1);
at least three spray heads (2) which are spirally distributed on the outer barrel (1) along the steam flow direction in the outer barrel (1), wherein one end of each spray head (2) is suitable for being connected with a water supply pipeline, and the other end of each spray head is introduced into the outer barrel (1) and is suitable for spraying water into the outer barrel (1);
the sleeve (3) is sleeved on the periphery of the spray head (2), and the sleeve (3) is respectively connected with the outer wall of the spray head (2) and the outer cylinder (1) in a sealing mode.
2. Desuperheater for a combined cycle gas turbine power generation unit according to claim 1, characterized in that the side wall of the sleeve (3) facing the steam is provided with a temperature detector (4).
3. The desuperheater for a combined cycle gas turbine power generation unit according to claim 2, wherein the spray head (2) is inserted into an end seal in the outer cylinder (1), and a plurality of through holes (5) are formed in a side wall facing away from steam, and notches are formed in a side wall of the sleeve (3) corresponding to the through holes (5) so that water flows sequentially through the through holes (5) and the notches.
4. A desuperheater for a combined cycle gas turbine power-plant according to any of the claims 1-3, characterized in that the sleeve (3) is welded to the outer wall of the shower head (2) by means of a first head (6), the outer cylinder (1) and the sleeve (3) being welded.
5. The desuperheater for a combined cycle gas turbine power generation unit of claim 4, wherein an inner liner (8) is further sleeved in the outer cylinder (1) at intervals, at least three fixing assemblies (9) are circumferentially mounted on the outer cylinder (1) and the inner liner (8) near the upstream position of steam, the fixing assemblies (9) are suitable for fixedly connecting the outer cylinder (1) and the inner liner (8) near the downstream position of steam, at least three supporting assemblies (10) are circumferentially mounted on the outer cylinder (1) and the inner liner (8), and the supporting assemblies (10) are suitable for supporting the inner liner (8) in the outer cylinder (1) at intervals.
6. The desuperheater for a combined cycle gas turbine power generation unit of claim 5, wherein the fixing assembly (9) comprises a first fixing arc piece (11), a second fixing arc piece (12) and a fastening piece (13), the first fixing arc piece (11) and the second fixing arc piece (12) are respectively welded on the outer cylinder (1) and the inner liner (8), and two ends of the fastening piece (13) are respectively welded on the first fixing arc piece (11) and the second fixing arc piece (12).
7. The desuperheater for a combined cycle gas turbine power plant of claim 6, wherein the support assembly (10) comprises a third fixed arc piece (14) and a support (7), the third fixed arc piece (14) is welded on the inner wall of the liner (8), and the support (7) is welded on one end to the third fixed arc piece (14) and the other end is abutted on the inner wall of the outer cylinder (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322056893.9U CN220303623U (en) | 2023-08-01 | 2023-08-01 | Desuperheater for combined cycle gas turbine generator set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322056893.9U CN220303623U (en) | 2023-08-01 | 2023-08-01 | Desuperheater for combined cycle gas turbine generator set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220303623U true CN220303623U (en) | 2024-01-05 |
Family
ID=89353936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322056893.9U Active CN220303623U (en) | 2023-08-01 | 2023-08-01 | Desuperheater for combined cycle gas turbine generator set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220303623U (en) |
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2023
- 2023-08-01 CN CN202322056893.9U patent/CN220303623U/en active Active
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