CN201330388Y - Pumped storage power station buried steel bifurcated pipe and wall rock union forced structure - Google Patents
Pumped storage power station buried steel bifurcated pipe and wall rock union forced structure Download PDFInfo
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- CN201330388Y CN201330388Y CNU2008202151148U CN200820215114U CN201330388Y CN 201330388 Y CN201330388 Y CN 201330388Y CN U2008202151148 U CNU2008202151148 U CN U2008202151148U CN 200820215114 U CN200820215114 U CN 200820215114U CN 201330388 Y CN201330388 Y CN 201330388Y
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- bifurcated pipe
- pipe
- steel
- steel bifurcated
- wall rock
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 57
- 239000010959 steel Substances 0.000 title claims abstract description 57
- 239000011435 rock Substances 0.000 title claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000009933 burial Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The utility model discloses a pumped storage power station buried steel bifurcated pipe and wall rock union forced structure, which comprises a steel bifurcated pipe and a wall rock, wherein the steel bifurcated pipe is buried in the wall rock, the steel bifurcated pipe and the wall rock have gaps on the vertical direction and the horizontal direction. The vertical direction gap is 2.0mm, and the horizontal gap is 1.0mm. The steel bifurcated pipe is composed of a taper pipe, a column pipe and a ribbed plate which are combined into a plate shell combined structure, and the ribbed plate is a symmetrical Y-type inner intensified crescent-type ribbed plate. The pumped storage power station buried steel bifurcated pipe and wall rock union forced structure utilize the steel bifurcated pipe to generate deformation under the effect of inner water pressure, firstly, a part of pipe wall is filled with gaps and then is contacted with the wall rock to enable the wall rock to generate elastic resistance which is opposite to the direction of the inner wall pressure direction of the bifurcated pipe and whose size is related with displacement. The wall rock plays a limiting role to radial displacement of the wall pipe of the bifurcated pipe, and simultaneously shares a part of inner water pressure due to the resistance. The pumped storage power station buried steel bifurcated pipe and wall rock union forced structure reduce the demands to the steel bifurcated pipe intensity, and can adopt steel materials with lower intensity, and the pipe wall thickness of the steel bifurcated pipe also can be reduced correspondingly.
Description
Technical field
The utility model relates to a kind of pipeline configuration, specifically is a kind of structure of pumped storage power plant land burial steel bifurcated pipe, and it is stressed to make full use of the country rock associating, attenuate steel bifurcated pipe design tube wall, reduce steel bifurcated pipe welding procedure difficulty, guarantee steel bifurcated pipe construction quality, save construction investment.
Background technology
Electric energy when pumped storage power plant is utilized the electric load low ebb draws water to upper storage reservoir, discharges water in the electric load peak period to the power station of lower storage reservoir generating again.Claim the storage station again.Unnecessary electric energy when it is can be with network load low changes the electrical network high value electric energy of peak time into, also is suitable for frequency modulation, phase modulation, the cycle of stable power system and voltage, and be preferably emergency duty, also can the raising system in the efficient of thermal power station and nuclear power station.
According to the engineering experience of building pumped storage power plant, in the penstock design, make full use of country rock and share interior hydraulic pressure, solve the important means of big HD steel pipe technical barrier, and have significantly economic benefit, still, so far for extremely, in numerous engineerings, the practical application overwhelming majority is only limited to straight pipe section, and does not relate to steel bifurcated pipe field.In the prior art, the steel bifurcated pipe adopts bright bifurcated pipe structure usually, this bright bifurcated pipe need adopt 800MPa level steel, and by the new criteria requirement, even adopt 800MPa level steel, still exist a plurality of bus turning points place localized membrane stress to exceed standard, the inside and outside stress distribution of floor is seriously inhomogeneous simultaneously, be far from small eccentricity and be subjected to arm-tie, fiber stress severe overweight in its maximum section part.
Summary of the invention
Technical problem to be solved in the utility model is on the basis of abundant absorption pressure solenoid design experiences, propose pumped storage power plant land burial formula steel bifurcated pipe and country rock and unite stressed project organization, and the measuring and calculating of country rock share rate has been proposed truly feasible technical scheme.
The embedded steel bifurcated pipe of a kind of pumped storage power plant described in the utility model and country rock associating force structure comprises steel bifurcated pipe and country rock, and the steel bifurcated pipe is imbedded in the country rock, steel bifurcated pipe and country rock vertical to level to there being the slit.
Above-mentionedly vertically get 2.0mm to the slit, horizontal gap is got 1.0mm.
The steel bifurcated pipe combines the plate shell combined structure by Taper Pipe, column jecket, floor, and described floor is to strengthen the selenodont floor in the Symmetric Y type.The steel plate of steel bifurcated pipe is preferentially selected the 600MPa grade steel plate for use, and shell thickness is 60mm, and floor thickness is got 100mm.
The utility model adopts steel bifurcated pipe and stressed design of country rock associating, still belong to the first at home, this structure utilizes the steel bifurcated pipe to deform under the internal water pressure effect, at first make the part tube wall fill up the slit, then contact country rock, and cause, the size elastic resistance relevant opposite with bifurcated pipe internal water pressure direction with displacement with the country rock generation of bifurcated pipe contact portion.Because the effect of this elastic resistance, country rock plays certain effect of contraction to bifurcated pipe tube wall radial displacement meeting, makes country rock share a part of internal water pressure simultaneously, and makes bifurcated pipe tube wall stress and radial displacement be tending towards homogenising to a certain degree.This structure decrease to the requirement of steel bifurcated pipe intensity, can adopt the lower steel of intensity, and steel bifurcated pipe wall thickness can correspondingly reduce also.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the A-A sectional view of Fig. 1.
The specific embodiment
Specifically introduce the utility model below in conjunction with an embodiment.
Certain pumped storage power plant is provided with two diversion bifurcated pipes (employing steel lining) at the about 80m in underground power house upstream place, is 4 unit penstocks with 2 diversion tunnel forks, and as depicted in figs. 1 and 2, steel bifurcated pipe predominant tube diameter is 4.8m, and the arm diameter is 3.4m.The steel bifurcated pipe is imbedded in the country rock, steel bifurcated pipe and country rock vertical to level to there being the slit.Wherein vertically get 2.0mm to the slit, level is got 1.0mm to the slit.Bifurcated pipe adopts strengthens selenodont rib steel bifurcated pipe in the Symmetric Y type.Determine 70 ° at steel bifurcated pipe fork angle, public cut radius 2.6866m.Shell thickness is 60mm, and interior reinforcement crescent moon rib thickness is 100mm, and steel adopt the 600MPa grade steel plate.
1, country rock parameter:
Elastic modulus E
d=7.39 * 10
3MPa and poisson's ratio μ
d=0.3, according to country rock unit elasticity drag K
0Definition (K
0=E/ (100 (1+ μ))) then can try to achieve K
0=56.84MPa/cm.Bifurcated pipe excavation radius R=3.75m, K=100K on the excavation face
0=E/R, thereby desirable K=15MPa/cm, and by designing the K that the bifurcated pipe place is provided in addition
0=20MPa/cm, then K=5.33MPa/cm on the excavation face calculates and gets 5.0MPa/cm.
Design given slit, bifurcated pipe place value and be 1.2mm, according to the calculating experience of Other Engineering in the past, the slit numerical values recited is very remarkable to bifurcated pipe associating stressing influence.For illustrating the influence in slit, the spy has done serial calculating, and with the different value of radial gap 1.0,1.2,2.0,3.0,5.0,8.0, elastic resistance is got above-mentioned average, and promptly K=10MPa/cm calculates structure steel bifurcated pipe of the present utility model.
Usually, the country rock under the natural situation usually because of formation condition or the structure reason be heterogeneity, this makes the mechanical characteristic of country rock present anisotropy.The on-the-spot geological test data that provides of design also reflect level to modular ratio its vertically to much bigger, the utility model considers that the anisotropy factor in country rock and slit is to the bifurcated pipe stress influence, as a kind of comparative study, get vertically to elastic resistance be K=5.0MPa/cm, level is to K=10MPa/cm.In addition, consider construction and country rock plastic strain factor, the slit distributes also inhomogeneities, vertically gets 2.0mm to the slit, and horizontal gap is got 1.0mm.
Crescent moon rib bifurcated pipe is a space structures, and the booster action of floor arranged, when pipe thickness, slit and wall rock condition were identical, the critical external compressive resistance stabilizing power of embedded bifurcated pipe was higher than its main straight tube beyond doubt, and external pressure unstability accident never appearred in embedded bifurcated pipe in the engineering practice.This shows that the critical external compressive resistance stabilizing power of embedded crescent moon rib bifurcated pipe should be higher than its person in charge's critical external compressive resistance ability.And the straight length radius is 2400mm before this engineering bifurcated pipe, thickness 44mm, and with 600MPa level steel, the external pressure 1.27MPa of this place, design is calculated according to the empirical formula of specification recommends, and its external pressure buckling safety factor is greater than 2.As everyone knows, the result that empirical formula obtains is content to retain sovereignty over a part of the country complete, if with the following Amstutz formula of specification recommends, result of calculation can draw bigger external pressure buckling safety factor:
And the design thickness of bifurcated pipe is 50mm or thicker, and its external pressure is stable more not to be problem.
Claims (4)
1, embedded steel bifurcated pipe of a kind of pumped storage power plant and country rock associating force structure, it is characterized in that: comprise steel bifurcated pipe and country rock, the steel bifurcated pipe is imbedded in the country rock, steel bifurcated pipe and country rock vertical to level to there being the slit.
2, embedded steel bifurcated pipe of pumped storage power plant according to claim 1 and country rock associating force structure, it is characterized in that: vertically get 2.0mm to the slit, horizontal gap is got 1.0mm.
3, embedded steel bifurcated pipe of pumped storage power plant according to claim 1 and 2 and country rock associating force structure, it is characterized in that: the steel bifurcated pipe combines the plate shell combined structure by Taper Pipe, column jecket, floor, and described floor is to strengthen the selenodont floor in the Symmetric Y type.
4, embedded steel bifurcated pipe of pumped storage power plant according to claim 3 and country rock associating force structure, it is characterized in that: the steel plate of described steel bifurcated pipe is selected the 600MPa grade steel plate for use, and shell thickness is 60mm, and floor thickness is got 100mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202151148U CN201330388Y (en) | 2008-12-11 | 2008-12-11 | Pumped storage power station buried steel bifurcated pipe and wall rock union forced structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202151148U CN201330388Y (en) | 2008-12-11 | 2008-12-11 | Pumped storage power station buried steel bifurcated pipe and wall rock union forced structure |
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| Publication Number | Publication Date |
|---|---|
| CN201330388Y true CN201330388Y (en) | 2009-10-21 |
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|---|---|---|---|
| CNU2008202151148U Expired - Lifetime CN201330388Y (en) | 2008-12-11 | 2008-12-11 | Pumped storage power station buried steel bifurcated pipe and wall rock union forced structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619202A (en) * | 2012-04-24 | 2012-08-01 | 四川大学 | Method for arranging pressure pipeline |
| CN102936886A (en) * | 2012-11-30 | 2013-02-20 | 中水北方勘测设计研究有限责任公司 | Embedded fixing structure for diversion steel penstock of hydropower station |
-
2008
- 2008-12-11 CN CNU2008202151148U patent/CN201330388Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619202A (en) * | 2012-04-24 | 2012-08-01 | 四川大学 | Method for arranging pressure pipeline |
| CN102936886A (en) * | 2012-11-30 | 2013-02-20 | 中水北方勘测设计研究有限责任公司 | Embedded fixing structure for diversion steel penstock of hydropower station |
| CN102936886B (en) * | 2012-11-30 | 2014-09-24 | 中水北方勘测设计研究有限责任公司 | Embedded fixing structure for diversion steel penstock of hydropower station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Jiang Changfei Inventor after: Huang Yuezhao Inventor after: Huang Zuguang Inventor after: Zhang Chunsheng Inventor after: Zheng Quanchun Inventor before: Jiang Changfei |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: JIANG ZHANGFEI TO: JIANG ZHANGFEI; HUANG YUEZHAO; HUANG ZUGUANG; ZHANG CHUNSHENG; ZHENG QUANCHUN |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20091023 Address after: Yixing City, Jiangsu Province, Luyuan Road No. 3, zip code: 214205 Co-patentee after: East China Hydroelectric Investigation & Design Institute, China Hydropower Consulting Group Patentee after: East China Yixing pumped storage Co., Ltd. Address before: Yixing City, Jiangsu Province, Luyuan Road No. 3, zip code: 214205 Patentee before: East China Yixing Pumped Storage Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID XINYUAN CO., LTD. HUADONG YIXING PUMPED Free format text: FORMER OWNER: EAST CHINA SURVEY AND DESIGN INST., CHINA HYDROPOWER CONSULTING GROUP Effective date: 20130327 Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: HUADONG YIXING PUMPED STORAGE CO., LTD. Effective date: 20130327 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 214205 WUXI, JIANGSU PROVINCE TO: 100031 DONGCHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130327 Address after: 100031 West Chang'an Avenue, Beijing, No. 86 Patentee after: State Grid Corporation of China Patentee after: State Grid Xinyuan Co., Ltd. Patentee after: East China Yixing Pumped Storage Co., Ltd. Patentee after: East China Hydroelectric Investigation & Design Institute, China Hydropower Consulting Group Address before: Luyuan road Yixing City, Jiangsu province 214205 No. 3 Patentee before: East China Yixing Pumped Storage Co., Ltd. Patentee before: East China Hydroelectric Investigation & Design Institute, China Hydropower Consulting Group |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091021 |