CN112762725A - Condenser exhaust steam extraction device and condenser system - Google Patents
Condenser exhaust steam extraction device and condenser system Download PDFInfo
- Publication number
- CN112762725A CN112762725A CN202110004339.9A CN202110004339A CN112762725A CN 112762725 A CN112762725 A CN 112762725A CN 202110004339 A CN202110004339 A CN 202110004339A CN 112762725 A CN112762725 A CN 112762725A
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- condenser
- box body
- box
- exhaust steam
- out device
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- 238000000605 extraction Methods 0.000 title claims description 6
- 230000007704 transition Effects 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000004321 preservation Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention relates to a dead steam leading-out device of a condenser and a condenser system, which comprise a box body, wherein one end of the box body is closed, the other end of the box body can be connected through a throat part of the condenser and can wrap a low-pressure heater of the condenser, the box body is provided with a dead steam leading-out interface, a first truss support is arranged in the box body at the position of the dead steam leading-out interface, a second truss support is arranged at the position of the box body connected with the condenser, the second truss support can be fixed with the truss support in the condenser, and the rest part in the box body is provided with a clapboard support.
Description
Technical Field
The invention relates to the technical field of exhaust steam waste heat utilization of a thermal power plant, in particular to a condenser exhaust steam leading-out device and a condenser system.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
At present, heat supply transformation, especially waste steam and waste heat utilization transformation, is widely implemented in a thermal power plant, low-quality waste steam entering a cold end of a steam turbine can be used as heating steam to heat supply network water, and therefore the low-quality heat of the part is utilized. In the technical scheme of utilizing the exhaust steam of the steam turbine, two circular holes (as shown in an attached figure 3 in the specification) are generally arranged at the throat part of a condenser and are connected with a pipeline. The area of the throat part of the condenser is limited, the low pressure (see attached figures 1-2 in the specification) of the throat part of the condenser is avoided, the area of the opening is limited, and the utilization flow of the dead steam is also limited.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a dead steam leading-out device of a condenser, so that the limitation of the utilization flow of the dead steam is avoided.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, an embodiment of the invention provides a dead steam leading-out device for a condenser, which comprises a box body, wherein one end of the box body is closed, the other end of the box body can be connected through a throat part of the condenser and can wrap a low-pressure heater of the condenser, the box body is provided with a dead steam leading-out interface, a first truss support is arranged in the box body at the position of the dead steam leading-out interface, a second truss support is arranged at the position of the connection between the box body and the condenser, the second truss support can be fixed with the truss support in the condenser, and partition plate supports are arranged on the rest part in the box body.
Furthermore, four edges of the box body parallel to the axial direction of the box body adopt arc surface transition.
Further, the box body comprises a first box body part and a second box body part, and the first box body part and the second box body part are connected through an expansion joint.
Furthermore, a plurality of frames are fixed on the outer side face of the box body, the frames are arranged at intervals along the axis direction of the box body, and rib plates are arranged between the frames and the outer side face of the box body.
Furthermore, a vacuum breaking valve is installed on the wall of the box body.
Furthermore, a three-stage desuperheater is mounted on the wall of the box body.
Further, the outer surface of the box body is coated with a heat preservation layer.
Furthermore, first truss support and second truss support all include the first pipe of a plurality of levels settings and the second pipe of vertical setting, and first pipe and second pipe utilize pipe truss connection spare to connect fixedly in cross position department.
Furthermore, the baffle supports including the symmetry set up the vertical support board in box central line both sides, vertical support board's upper and lower both ends and the top tank wall and the bottom tank wall fixed connection of box, are equipped with horizontal support board between the lateral part tank wall of vertical support board and box.
In a second aspect, an embodiment of the present invention provides a condenser system, including a condenser and the condenser exhaust steam leading-out device of the first aspect, wherein an exhaust steam outlet is arranged at a throat portion of the condenser, the box body is connected with the throat portion of the condenser and wraps a low-pressure heater of the condenser inside, and an exhaust steam flowing out of the condenser can enter the box body through the exhaust steam outlet.
The invention has the beneficial effects that:
1. according to the extraction device, the low-pressure heater in the opening range of the throat part of the condenser is wrapped in the box body, the opening does not need to avoid the low-pressure heater, the opening area of the throat part of the condenser is maximized on the premise that the normal operation of the low-pressure heater is not influenced, and the circulation of exhaust steam can be increased to the maximum extent.
2. According to the extraction device, the four edges of the box body parallel to the axis of the box body are in arc surface transition, so that stress concentration at four corners of a square structure can be reduced, and circulation resistance is reduced.
3. According to the leading-out device, the second truss support which can be fixed with the truss structure of the condenser is arranged in the part, connected with the throat part of the condenser, in the box body, so that the connection stability of the box body is higher.
4. According to the lead-out device, the plurality of frames are fixed on the outer side surface of the box body, and the rib plates are arranged between the frames and the outer side surface of the box body, so that the structural strength of the whole box body is enhanced, and the negative pressure resistance is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a front view of a conventional condenser;
FIG. 2 is a side view of a conventional condenser;
FIG. 3 is a schematic view of an opening for leading off exhaust steam of a conventional condenser;
FIG. 4 is a plan view showing the entire structure of embodiment 1 of the present invention;
FIG. 5 is a side view of the whole structure of embodiment 1 of the present invention;
FIG. 6 is a schematic cross-sectional view taken along line A of FIG. 4 in accordance with the present invention;
FIG. 7 is a schematic view of the cross-section taken in the direction R of FIG. 6 in accordance with the present invention;
FIG. 8 is a schematic cross-sectional view taken along directions B and D of FIG. 4 in accordance with the present invention;
FIG. 9 is a schematic cross-sectional view taken along line C of FIG. 4 in accordance with the present invention;
FIG. 10 is a schematic cross-sectional view taken along line E of FIG. 4 in accordance with the present invention;
fig. 11 is a schematic view of a second truss support arrangement according to embodiment 1 of the present invention;
FIG. 12 is a schematic view of an opening of a throat of a condenser in accordance with embodiment 2 of the present invention;
FIG. 13 is a cloud of displacement distribution of the throat opening of the condenser in accordance with embodiment 2 of the present invention;
FIG. 14 is a cloud of the stress distribution of the throat opening of the condenser in accordance with embodiment 2 of the present invention;
the steam-exhaust steam-.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
For convenience of description, the words "up", "down", "left" and "right" in the present invention, if any, merely indicate correspondence with up, down, left and right directions of the drawings themselves, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
Just as the introduction of the background art, when the exhaust steam of the condenser is used at present, the opening area is limited, and the utilization flow of the exhaust steam is also limited.
In a typical implementation of this application, as shown in fig. 4-11, a condenser exhaust steam eduction gear, box 2 including the cuboid structure, the one end of box can with the throat fixed connection of condenser, the condenser throat is equipped with the opening, the exhaust steam that the condenser produced can pass through inside opening 1 gets into the box, the tip that box and condenser are connected can also be including the low pressure heater parcel of condenser for the work that does not influence low pressure heater is drawn forth to the condenser, and low pressure heater need not to be avoided to the opening of condenser throat, under the prerequisite that does not influence low pressure heater normal operating, makes condenser throat trompil area reach the biggest, can furthest increase exhaust steam circulation.
And the other end of the box body is fixedly provided with a seal head 3, and the seal head is used for sealing the other end of the box body.
The steam exhaust leading-out connector 4 is arranged on the box body and used for leading out steam exhaust in the box body, the number of the steam exhaust leading-out connectors can be determined according to actual working conditions, two steam exhaust leading-out connectors are arranged in the embodiment, preferably, one steam exhaust leading-out connector is arranged on the top box wall of the box body, the other steam exhaust leading-out connector is arranged on the side box wall of the box body, and the axes of the two steam exhaust leading-out connectors are perpendicular to each other and are not on the same plane.
The four edges of the box body parallel to the axis of the box body are transited by arc surfaces so as to reduce stress concentration at four corners of the square structure and reduce gas circulation resistance.
The box body is characterized in that a three-level desuperheater interface 5 is further arranged on the box wall at the top of the box body, three-level desuperheaters are installed through the three-level desuperheater interface, the number of the three-level desuperheaters can be set according to actual use requirements, and preferably, two three-level desuperheaters are arranged.
The vacuum breaker is characterized in that a vacuum breaker valve interface 6 is further arranged on the box wall on the side part of one side of the box body, and a vacuum breaker valve is mounted at the vacuum breaker valve interface, so that the vacuum breaker can realize the vacuum breaking emergency shutdown function.
In this embodiment, the box body includes a first box body portion and a second box body portion, and the first box body portion and the second box body portion are connected by an expansion joint 7, so that the requirement of the self thermal expansion of the box body can be met.
A first truss support is arranged in the box body at the position of the exhaust steam leading-out interface, and a second truss support is arranged at the position of the connection between the box body and the condenser.
The first truss support comprises a plurality of first round pipes 13 arranged horizontally and second round pipes 14 arranged vertically, the first round pipes and the second round pipes are fixedly connected at the crossing positions through round pipe truss connecting pieces 15, the round pipe truss connecting pieces are formed by existing elements, and the specific structure of the round pipe truss connecting pieces is not described in detail herein.
The second truss support also comprises a first round pipe and a second round pipe, wherein the first round pipe is arranged in a plurality of levels, the second round pipe is vertically arranged, the first round pipe and the second round pipe are fixedly connected at the position of the cross position through a round pipe truss connecting piece, the round pipe of the second truss support can be fixedly welded with the round pipe of the truss support inside the condenser, the connection stability of the box body is enhanced, and part of the first round pipe and the second round pipe are removed from the middle position of the second truss support so as to reserve an embedding space of the low-pressure heater.
The other parts in the box are provided with baffle supports, the baffle supports including the symmetry set up the vertical support board 16 in box central line both sides, vertical support board's upper and lower both ends and the top tank wall and the bottom tank wall welded fastening of box are connected, are equipped with horizontal support board 17 between the lateral part tank wall of vertical support board and box, and horizontal support board's both ends respectively with vertical support board and lateral part tank wall welded fastening, adopt the baffle to support, can reduce the circulation resistance of exhaust steam.
The box lateral surface is fixed with a plurality of frames 8, and a plurality of frames set up along box axis direction interval, are equipped with floor 9, preferred between the lateral surface of frame and box, the frame is formed by four channel-section steels welding, and the welding has the floor between four angle departments of channel-section steel and box, adopts frame and floor, and the structural strength of whole box is high, and anti negative pressure ability reinforce.
In this embodiment, the lateral surface coating of box has heat preservation 10, prevents that the heat of exhaust steam scatters and disappears, and is preferred, the heat preservation can adopt high temperature glass cotton or rock wool, and the outside of heat preservation sets up the outer casing, the outer casing can adopt various steel sheet, aluminum plate or galvanized iron sheet etc. to expect, the outer casing can adopt various steel sheet, aluminum plate or galvanized iron sheet
The leading-out device of the embodiment can be processed in a factory or on the site, is locally hoisted and installed in place, and is convenient and quick to install.
Example 2:
the embodiment discloses a condenser system, including condenser and embodiment 1 condenser exhaust steam eduction gear, as shown in fig. 12, the throat of condenser 11 is provided with opening 1, the opening is the rectangle opening, compares with traditional circular opening, and its area can reach the biggest opening area that the condenser allows, and low pressure heater accessible opening stretches out, and low pressure heater adopts current arrangement can, utilizes condenser inner structure to support, and box and condenser throat fixed connection, exhaust steam can get into inside the box through the opening, the box still wraps up the low pressure heater of condenser in inside, does not influence low pressure heater's normal work, the bottom surface of box is fixed with a plurality of landing legs 12, utilizes the landing leg to support the box.
As shown in fig. 13 and 14, fig. 13 is a displacement distribution cloud chart of the throat opening of the condenser, fig. 14 is a stress distribution cloud chart of the throat opening of the condenser, and it can be seen from the deformation result chart that the deformation of the upper square opening side of the condenser and the square large connecting pipe is relatively small, about 5.7mm, mainly caused by external pressure load, and mainly concentrated in the middle of the square opening flat plate;
according to the stress cloud chart, the overall stress of the square opening side of the upper part of the condenser and the square large connecting pipe is small, the stress at the joint of the square large connecting pipe and the opening of the condenser is higher by about 100MPa, and the stress is gradually reduced along the axial direction of the square connecting pipe.
According to the calculation result, the following judgment can be made: the strength of the upper hole of the condenser meets the requirement.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (10)
1. The utility model provides a condenser exhaust steam extraction element, its characterized in that, the power distribution box comprises a box body, box one end is sealed, and the other end can be connected through the throat of condenser and can be with the low pressure heater parcel of condenser including, the box is provided with the exhaust steam and draws forth the interface, and the exhaust steam is drawn forth and is equipped with first truss support in the box of interface position department, and box and condenser hookup location department are equipped with the second truss support, and the second truss support can be fixed with the inside truss support of condenser, and all the other parts in the box are equipped with the baffle and support.
2. The exhaust steam leading-out device of the condenser as claimed in claim 1, wherein four edges of the box body parallel to the axial direction of the box body are in arc surface transition.
3. The exhaust steam leading-out device of the condenser as claimed in claim 1, wherein the box body comprises a first box body part and a second box body part, and the first box body part and the second box body part are connected through an expansion joint.
4. The exhaust steam leading-out device of the condenser as claimed in claim 1, wherein a plurality of frames are fixed on the outer side surface of the box body, the frames are arranged at intervals along the axial direction of the box body, and a rib plate is arranged between the frames and the outer side surface of the box body.
5. The exhaust steam leading-out device of the condenser as claimed in claim 1, wherein a vacuum breaking valve is installed on the wall of the box body.
6. The exhaust steam leading-out device of the condenser as claimed in claim 1, wherein a three-stage desuperheater is installed on the wall of the box body.
7. The exhaust steam leading-out device of the condenser as claimed in claim 1, wherein the outer surface of the box body is coated with an insulating layer.
8. The condenser exhaust steam extraction device according to claim 1, wherein the first truss support and the second truss support each comprise a plurality of first circular tubes arranged horizontally and second circular tubes arranged vertically, and the first circular tubes and the second circular tubes are connected and fixed at intersecting positions by circular tube truss connecting members.
9. The exhaust steam leading-out device of the condenser as claimed in claim 1, wherein the clapboard support comprises vertical support plates symmetrically arranged at two sides of the central line of the box body, the upper end and the lower end of each vertical support plate are fixedly connected with the top box wall and the bottom box wall of the box body, and a horizontal support plate is arranged between each vertical support plate and the side box wall of the box body.
10. A condenser system is characterized by comprising a condenser and the condenser exhaust steam leading-out device according to any one of claims 1 to 9, wherein a rectangular opening is formed in the throat part of the condenser, a box body is connected with the throat part of the condenser and wraps a low-pressure heater of the condenser inside, and an exhaust device flowing out of the condenser can enter the box body through an exhaust device outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110004339.9A CN112762725A (en) | 2021-01-04 | 2021-01-04 | Condenser exhaust steam extraction device and condenser system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110004339.9A CN112762725A (en) | 2021-01-04 | 2021-01-04 | Condenser exhaust steam extraction device and condenser system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112762725A true CN112762725A (en) | 2021-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110004339.9A Pending CN112762725A (en) | 2021-01-04 | 2021-01-04 | Condenser exhaust steam extraction device and condenser system |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1317660A (en) * | 2000-04-10 | 2001-10-17 | 王毅 | Refractory plate combined wind pipe and its combining technique |
| CN201025077Y (en) * | 2007-04-24 | 2008-02-20 | 上海汽轮机有限公司 | Shunt exhaust device |
| CN201382733Y (en) * | 2009-03-02 | 2010-01-13 | 上海电气电站设备有限公司 | Connecting neck supporting structure used for laryngeal of condenser of ultra-super critical thermal power generating unit |
| US20150000879A1 (en) * | 2013-06-27 | 2015-01-01 | Kabushiki Kaisha Toshiba | Condenser |
| CN107524483A (en) * | 2017-06-05 | 2017-12-29 | 联合瑞升（北京）科技有限公司 | A kind of exhaust steam in steam turbine deriving structure and method |
| CN208418697U (en) * | 2017-12-31 | 2019-01-22 | 天津科尔节能技术有限公司 | A kind of condenser temperature-decreased pressure reducer reconstruction structure |
-
2021
- 2021-01-04 CN CN202110004339.9A patent/CN112762725A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1317660A (en) * | 2000-04-10 | 2001-10-17 | 王毅 | Refractory plate combined wind pipe and its combining technique |
| CN201025077Y (en) * | 2007-04-24 | 2008-02-20 | 上海汽轮机有限公司 | Shunt exhaust device |
| CN201382733Y (en) * | 2009-03-02 | 2010-01-13 | 上海电气电站设备有限公司 | Connecting neck supporting structure used for laryngeal of condenser of ultra-super critical thermal power generating unit |
| US20150000879A1 (en) * | 2013-06-27 | 2015-01-01 | Kabushiki Kaisha Toshiba | Condenser |
| CN107524483A (en) * | 2017-06-05 | 2017-12-29 | 联合瑞升（北京）科技有限公司 | A kind of exhaust steam in steam turbine deriving structure and method |
| CN208418697U (en) * | 2017-12-31 | 2019-01-22 | 天津科尔节能技术有限公司 | A kind of condenser temperature-decreased pressure reducer reconstruction structure |
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Application publication date: 20210507 |