CN109830313B - Steam generator spiral heat exchange tube supporting structure convenient to disassemble without welding - Google Patents
Steam generator spiral heat exchange tube supporting structure convenient to disassemble without welding Download PDFInfo
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- CN109830313B CN109830313B CN201910033330.3A CN201910033330A CN109830313B CN 109830313 B CN109830313 B CN 109830313B CN 201910033330 A CN201910033330 A CN 201910033330A CN 109830313 B CN109830313 B CN 109830313B
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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
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention discloses a steam generator spiral heat exchange tube supporting structure which provides a steam generator spiral heat exchange tube with solderless and convenient disassembly, the structure utilizes the engagement of T-shaped grooves and T-shaped raised lines to construct a detachable supporting structure, meanwhile, the T-shaped raised line is assembled by a plurality of supporting block parts, each supporting block part is respectively provided with a semicircular hole matched with the spiral heat exchange tube, in the assembling process of the supporting block parts, the spiral heat exchange tube is sleeved in the semicircular hole of the supporting block parts, the round holes are formed by pairing and combining the semicircular holes of the supporting block parts, the supporting block parts with the semicircular holes are arranged and assembled according to the spiral heat exchange tube arrangement sequence, the supporting block part assembly body is inserted into the T-shaped groove in sequence, the spiral heat exchange tube is fixed on the supporting structure by the bolt pre-tightening structure, and the steam generator spiral heat exchange tube supporting structure which is convenient to disassemble without welding is realized.
Description
Technical Field
The invention relates to the technical field of spiral heat exchange tube supporting structures, is mainly applied to the technical field of heat exchange of spiral heat exchange tubes of a nuclear reactor steam generator, relates to the field of heat exchange in physical processes such as cooling, heating, evaporation and the like, provides a welding-joint-free detachable fixed supporting structure for a steam generator spiral heat exchange tube, and particularly relates to a welding-free detachable steam generator spiral heat exchange tube supporting structure.
Background
Mankind is seeking for clean and efficient energy safety all the time, and has used nuclear power for many years, nuclear power system has played an indispensable role in energy structures at home and abroad, the size of the nuclear reactor of the present very mature nuclear power plant is large-scale, which is not beneficial to the nuclear reactor to be applied to island power supply, mobile nuclear power platform, space nuclear power, ship power station and the like; at present, all countries around the world are striving to develop miniaturized nuclear reactors and miniature nuclear reactors with smaller volume and higher power density, and the nuclear reactors and the steam generator, a main device such as a main pump, a control rod driving mechanism and the like are directly combined with a pressure vessel to form an integrated structure (namely, an integrated nuclear reactor), which is one of the key development directions of future nuclear reactors.
Various forms of integrated reactors have been proposed by international and domestic research and development institutions, and various types of integrated nuclear reactors are researched and developed in the united states, including IRIS reactors which are mainly researched and developed by westinghouse corporation, small MASLWR reactors which are jointly researched and developed by the united states department of energy, and Nu-Scale reactors which are being researched and developed by the united states company NuScale, SMART reactors are also researched and developed by the korean atomic energy research institute, MRX reactors are also researched and developed by the japan atomic energy research institute, and the like.
The heat exchanger is a key device for nuclear energy transmission of a first loop and a second loop in a nuclear power system, along with the requirement of more and more small-sized reactor research and development processes, a brand new built-in nuclear steam generator is also developed in the process of accelerating research and development, so that a nuclear reactor develops towards the directions of higher efficiency, compactness, integration and modularization, and the built-in multipurpose variable-diameter spiral heat exchanger which is high in heat exchange efficiency and accords with the development trend of the nuclear reactor is a technical solution developed under the engineering background and has very important engineering significance.
The installation and fixation of the heat exchanger spiral pipeline relate to the stability of nuclear reactor energy output, especially under the conditions such as high temperature and high pressure of a nuclear reactor, a solderless steam generator spiral heat exchange pipe supporting structure can fixedly support a steam generator spiral heat exchange pipe under the condition that the flowing state of cold and hot fluid on two sides is not influenced, the noise and vibration of the spiral heat exchange pipe are reduced, and the application of the steam generator spiral heat exchange pipe is greatly influenced, so that the development of a heat exchanger supporting structure which is free of welding, stable and reliable and high in safety has important engineering significance.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, adapt to the practical requirements, provide a spiral heat exchange tube supporting structure of a steam generator, which is mainly applied to the technical field of heat exchange of spiral heat exchange tubes of steam generators of nuclear reactors and is convenient to disassemble without welding for the spiral heat exchange tubes of the steam generator.
In order to realize the purpose of the invention, the technical scheme adopted by the invention is as follows:
a steam generator spiral heat exchange tube supporting structure convenient to disassemble without welding is designed and comprises a pressure container barrel supporting structure, a bolt pre-tightening structure, a T-shaped groove, a T-shaped convex strip, a cooling water inlet main pipe, a cooling water inlet pipe joint, a high-temperature high-pressure steam output pipe, a coolant flow through hole, a sealing flange plate structure and an elastic annular metal sealing pipe. Utilize the interlock of "T" type recess and "T" type sand grip to establish detachable bearing structure, simultaneously, supporting shoe a is formed by the assembly of a plurality of supporting shoe subparts, every supporting shoe subpart is provided with the semicircle orifice with spiral heat exchange tube matched with respectively, in the assembling process of "supporting shoe subpart, overlap the spiral heat exchange tube in the semicircle orifice of" supporting shoe subpart, form the round hole through the pairing and combining of supporting shoe subpart semicircle orifice, the supporting shoe subpart of taking the semicircle orifice makes up according to spiral heat exchange tube arrangement order, the supporting shoe assembly body is inserted to "T" type recess in proper order, reuse bolt pretension structure will "spiral heat exchange tube be fixed in bearing structure" again, realize the steam generator spiral heat exchange tube bearing structure of just dismantling without welding.
The supporting block a is formed by assembling a plurality of supporting block parts, each supporting block part is provided with a semicircular hole matched with the spiral heat exchange tube, and 2 supporting block parts with the semicircular holes can be combined into a circular hole for sleeving and fixing the spiral heat exchange tube of the steam generator.
The support block parts are provided with T-shaped convex structures and can be inserted into T-shaped grooves to be assembled and combined into a support structure, and meanwhile, the round holes formed by combining the semicircular holes of the support block parts correspond to the arrangement positions of the spiral heat exchange tubes of the steam generator one by one.
The T-shaped groove is in the structure
The appearance, the circumference of hoop is 4 like this, and the hoop has arranged 1 "T" type recess, 4 "T" type recesses at every 90 contained angles
The structure can be convenient for provide the support that just unloads solderless for cooling water inlet manifold.
The cooling water inlet header pipe is directly and fixedly supported on the T-shaped groove
The lateral portion of the structure.
The pressure vessel cylinder supporting structure comprises two supporting blocks b arranged on the outer surface of the pressure vessel at intervals, and the T-shaped groove is positioned between the two supporting blocks b and is fixedly connected with the supporting blocks b through connecting bolts.
And the side wall of the cooling water inlet header pipe is provided with coolant flow through holes connected with the initial end surface of the spiral heat exchange tube of the steam generator, the number of the coolant flow through holes is the same as that of the spiral heat exchange tubes, and the openings of the initial end surface of the spiral heat exchange tube are in one-to-one correspondence and communicated with the coolant flow through holes.
The high-temperature high-pressure steam output pipe is fixedly supported at the top of the supporting plate, and the side wall of the high-temperature high-pressure steam output pipe is provided with a joint matched with the outlet of the spiral heat exchange pipe of the steam generator.
The cooling water inlet main pipe and the cooling water inlet pipe joint are connected through SA-193Gr.B7 bolts in a pre-tightening mode, and meanwhile 2 pieces of Inconel718 elastic annular metal sealing pipes are arranged between the cooling water inlet main pipe and the cooling water inlet pipe joint.
The knife edge flange plate is provided with an inner knife edge and an outer knife edge.
A sealing flange structure is arranged between the cooling water inlet pipe joint and the outer pressure container, and the knife edge flange is in a structure that the inner knife edge is thinner and the outer knife edge is thicker, so that the deformation of the inner knife edge of the knife edge flange under high temperature and high pressure is favorably utilized, and the sealing performance of the knife edge flange is improved.
The invention has the beneficial effects that:
compared with the prior art, the spiral heat exchange tube supporting structure and the assembly of the steam generator, which are provided by the invention, have the following advantages that:
the invention completely adopts the bolt and the sealing flange knife edge to replace the welding technology, avoids the defects of a welding joint under the environment of extreme high temperature, high pressure and strong neutron irradiation, combines the high-pressure high-temperature sealing technologies such as a double-layer sealing flange knife edge and an elastic annular metal sealing tube, adopts the connection technology of an assembled supporting structure and a fastening bolt, is convenient to assemble, disassemble and maintain, can be flexibly assembled according to the actual requirement, and reduces the dependence of the spiral heat exchange tube supporting structure of the steam generator on the welding connection mode, which is convenient to disassemble without welding.
Drawings
FIG. 1 is a schematic view of an application of a spiral heat exchange tube support structure of a steam generator which is disassembled without welding according to the present invention;
FIG. 2 is a schematic view of a T-shaped groove and a T-shaped protrusion of a support plate according to the present invention;
FIG. 3 is a partial view of a steam generator spiral heat exchange tube support structure of the present invention which is disassembled without welding;
FIG. 4 is a schematic view of the spiral heat exchange tube support structure fixed support points of the present invention;
FIG. 5 is a schematic view of the connection of the cooling water inlet manifold of the present invention to the cooling water inlet manifold;
fig. 6 is a partially enlarged view of the sealing flange of the cooling water inlet according to the present invention.
Reference numerals: 1. a pressure vessel cylinder; 2. a support plate; 21. a T-shaped groove; 3. a spiral heat exchange tube; 4. a supporting block a; 41. t-shaped convex strips; 42. a supporting block circular hole; 5. a cooling water inlet header pipe; 51. a coolant flow through hole; 52. sealing the flange plate; 521. an elastic annular metal seal tube; 6. a cooling water inlet pipe joint; 7. a high-temperature high-pressure steam output pipe; 11. a supporting block b; 111. and tightening the bolt.
Detailed Description
The invention is further illustrated with reference to the following figures and examples:
example 1: a spiral heat exchange tube supporting structure of a steam generator which is disassembled without welding, and is seen in figures 1 to 6.
The steam generator spiral heat exchange tube support three-dimensional structure which is convenient to detach without welding is shown in figure 1 and comprises a pressure vessel cylinder 1, a support plate 2, a spiral heat exchange tube 3, a support block a4, a cooling water inlet header pipe 5, a cooling water inlet pipe joint 6, a high-temperature high-pressure steam output pipe 7, a support block b11, a fastening bolt 111, a T-shaped groove 21, a T-shaped convex strip 41, a support block round hole 42, a coolant flow through hole 51, a sealing flange 52 and an elastic annular metal sealing pipe 521.
Further, the spiral heat exchange tube 3 passes through the support block circular hole 42 of the support block a4 as shown in fig. 1.
Further, the upper half part of the supporting plate 2 is provided with the T-shaped groove 21 from top to bottom, the T-shaped groove 21 on the supporting plate 2 and the T-shaped protruding strip 41 on the supporting block a4 are twisted with each other to provide a sheathing and fixing support for the spiral heat exchange tube of the steam generator, as shown in fig. 2.
Furthermore, a cooling water inlet manifold 5 is supported at the middle lower part of the support plate 2, the cooling water inlet manifold 5 is connected with a cooling water inlet pipe connector 6, a support block a4 is connected at the middle upper part of the support plate 2, a support block round hole 42 is arranged on the support block a4, a high-temperature high-pressure steam output pipe 7 is supported at the top end of the support plate 2, and all the components are supported on the support plate 2, as shown in fig. 3.
Further, the support block round hole 42 is formed by assembling and combining 2 support block sub-parts with semicircular holes, the support block sub-parts comprise Sh01, Sh02, Sh03, Sh04, Sh05, Sh06, Sh07, Sh08, Sh09, Sh10, Sh11, Sh12, Sh13, Sh14, Sh15 and Sh16, a plurality of support block sub-parts with semicircular holes are sequentially assembled into a whole support block a4 according to the sequence from numbers 01 to 16, and a "T" type convex strip 41 is arranged on one side of all the support block sub-parts and can be meshed with the "T" type groove 21 on the support plate 2 for fixing and supporting, as shown in fig. 3.
Further, the assembly process of the steam generator spiral heat exchange tube support which is disassembled without welding is as follows: inserting the support shoe part Sh01 into the T-shaped groove 21 → winding the first layer of spiral heat exchange tube in the semicircular hole thereof → inserting the support shoe part Sh02 into the T-shaped groove 21 → winding the second layer of spiral heat exchange tube in the semicircular hole thereof → inserting the support shoe part Sh03 into the T-shaped groove 21 → winding the third layer of spiral heat exchange tube in the semicircular hole thereof → inserting the support shoe part Sh04 into the T-shaped groove 21 → winding the fourth layer of spiral heat exchange tube in the semicircular hole thereof → inserting the support shoe part Sh05 into the T-shaped groove 21 → winding the fifth layer of spiral heat exchange tube in the semicircular hole thereof → inserting the support shoe part Sh06 into the T-shaped groove 21 → winding the sixth layer of spiral heat exchange tube in the semicircular hole thereof → inserting the support shoe part Sh07 into the T-shaped groove 21 → winding the eighth layer of spiral heat exchange tube in the semicircular hole thereof → inserting the support shoe part Sh08 into the T-shaped groove 21 → winding the T-shaped groove 21 → inserting the support shoe part Sh08 → winding the eighth layer of spiral heat exchange tube → winding the T-shaped groove 21 in the semicircular hole thereof → winding the T-shaped groove 21 → inserting the support shoe part Sh08 Inserting the support block sub-part Sh09 → winding a ninth layer of spiral heat exchange tubes in the semicircular hole thereof → inserting the support block sub-part Sh10 into the "T" -shaped groove 21 → winding a tenth layer of spiral heat exchange tubes in the semicircular hole thereof → inserting the support block sub-part Sh11 into the "T" -shaped groove 21 → winding a eleventh layer of spiral heat exchange tubes in the semicircular hole thereof → inserting the support block sub-part Sh12 into the "T" -shaped groove 21 → winding a twelfth layer of spiral heat exchange tubes in the semicircular hole thereof → inserting the support block sub-part Sh13 into the "T" -shaped groove 21 → winding a thirteenth layer of spiral heat exchange tubes in the semicircular hole thereof → inserting the support block sub-part Sh14 into the "T" -shaped groove 21 → winding a fourteenth layer of spiral heat exchange tubes in the semicircular hole thereof → inserting the support block sub-part Sh15 into the "T" -shaped groove 21 → inserting the support block sub-part Sh16 into the "T" -shaped groove 16.
Further, the support plate 2 is vertically hung on the fixing hole of the support block b11 on the outer surface of the bottleneck of the pressure vessel cylinder 1 by the fastening bolt 111, so that the support plate 2 is tightly hung and fixed on the outer surface of the pressure vessel cylinder 1, as shown in fig. 4.
Furthermore, the side wall of the cooling water inlet manifold 5 is provided with coolant flow through holes 51 corresponding to the starting ends of the spiral heat exchange tubes, the number of the coolant flow through holes 51 is the same as the number of rows of the spiral heat exchange tubes, and the openings at the starting ends of the spiral heat exchange tubes correspond to and are communicated with the coolant flow through holes 51 one by one.
Furthermore, the cooling water inlet pipe joint 6 is communicated with the cooling water inlet manifold 5 through a sealing flange 52, specifically, a threaded hole is formed in the sealing flange 52, the cooling water inlet manifold 5 and the cooling water inlet pipe joint 6 are fixed through bolts, and 2 elastic annular metal sealing pipes 521 are arranged on the sealing flange 52, so that fluid inside the pipe and fluid outside the pipe can be effectively prevented from leaking after the bolts are fixed, and the purpose of double sealing is achieved, as shown in fig. 5 and 6.
The embodiments of the present invention are disclosed as the preferred embodiments, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention and make various extensions and changes without departing from the spirit of the present invention.
Claims (4)
1. A steam generator spiral heat exchange tube supporting structure convenient to disassemble without welding comprises a pressure vessel cylinder; the method is characterized in that: the side wall of the pressure vessel barrel is provided with at least two symmetrically arranged supporting plates, the supporting plates are longitudinally arranged, the outer side wall of each supporting plate is provided with a T-shaped groove from top to bottom, the upper end of each T-shaped groove penetrates through the end part of the top end of each supporting plate, and the lower end of each T-shaped groove is stopped at the middle lower part of each supporting plate;
the support block a is provided with a round hole for fixing the spiral heat exchange tube of the steam generator, the spiral heat exchange tube of the steam generator is fixed in the round hole, the spiral heat exchange tube of the steam generator is formed by spirally winding a plurality of heat conduction tubes, a spiral tube formed by winding one circle is fixed through at least two support block sub-parts, the end part of each support block sub-part is provided with a T-shaped convex strip, and the T-shaped convex strip of each support block sub-part is inserted into the T-shaped groove from the opening at the upper end of the T-shaped groove and is relatively fixed with the support plate; the steam generator spiral heat exchange tube is characterized in that the supporting block parts are movably and detachably arranged, a plurality of semicircular holes which are arranged at intervals are respectively arranged on the side edges of the butt joint of the two movable supporting block parts, the semicircular holes correspond to each other one by one and are in butt joint to form the circular holes, and when the two supporting block parts are in butt joint, the steam generator spiral heat exchange tube is fixed in the circular hole formed between the upper semicircular hole and the lower semicircular hole;
the supporting block sub-parts comprise Sh01, Sh02, Sh03, Sh04, Sh05, Sh06, Sh07, Sh08, Sh09, Sh10, Sh11, Sh12, Sh13, Sh14, Sh15 and Sh16, and a plurality of supporting block sub-parts with semicircular holes are sequentially assembled into a whole supporting block a according to the sequence numbered from 01 to 16; the assembly process of the support plate, the plurality of support block parts and the plurality of spiral heat exchange tubes comprises the following steps:
inserting the support shoe part Sh01 into the T-shaped groove 21 → winding the first layer of spiral heat exchange tube in the semicircular hole thereof → inserting the support shoe part Sh02 into the T-shaped groove 21 → winding the second layer of spiral heat exchange tube in the semicircular hole thereof → inserting the support shoe part Sh03 into the T-shaped groove 21 → winding the third layer of spiral heat exchange tube in the semicircular hole thereof → inserting the support shoe part Sh04 into the T-shaped groove 21 → winding the fourth layer of spiral heat exchange tube in the semicircular hole thereof → inserting the support shoe part Sh05 into the T-shaped groove 21 → winding the fifth layer of spiral heat exchange tube in the semicircular hole thereof → inserting the support shoe part Sh06 into the T-shaped groove 21 → winding the sixth layer of spiral heat exchange tube in the semicircular hole thereof → inserting the support shoe part Sh07 into the T-shaped groove 21 → winding the eighth layer of spiral heat exchange tube in the semicircular hole thereof → inserting the support shoe part Sh08 into the T-shaped groove 21 → winding the T-shaped groove 21 → inserting the support shoe part Sh08 → winding the eighth layer of spiral heat exchange tube → winding the T-shaped groove 21 in the semicircular hole thereof → winding the T-shaped groove 21 → inserting the support shoe part Sh08 Inserting the support block sub-part Sh09 → winding a ninth layer of spiral heat exchange tubes in the semicircular hole thereof → inserting the support block sub-part Sh10 into the "T" -shaped groove 21 → winding a tenth layer of spiral heat exchange tubes in the semicircular hole thereof → inserting the support block sub-part Sh11 into the "T" -shaped groove 21 → winding a eleventh layer of spiral heat exchange tubes in the semicircular hole thereof → inserting the support block sub-part Sh12 into the "T" -shaped groove 21 → winding a twelfth layer of spiral heat exchange tubes in the semicircular hole thereof → inserting the support block sub-part Sh13 into the "T" -shaped groove 21 → winding a thirteenth layer of spiral heat exchange tubes in the semicircular hole thereof → inserting the support block sub-part Sh14 into the "T" -shaped groove 21 → winding a fourteenth layer of spiral heat exchange tubes in the semicircular hole thereof → inserting the support block sub-part Sh15 into the "T" -shaped groove 21 → inserting the support block sub-part Sh16 into the "T" -shaped groove 16.
2. A steam generator spiral heat exchange tube support structure which is removable without welding as claimed in claim 1, wherein: the structural range of the T-shaped groove "
The shape of the cooling water inlet manifold is that the shape transverse structure can provide fixed support for the cooling water inlet manifold.
3. A steam generator spiral heat exchange tube support structure which is removable without welding as claimed in claim 1, wherein: the spiral pipe cooling system further comprises an inlet header pipe, wherein the side wall of the inlet header pipe is provided with coolant flow through holes corresponding to the starting end of the spiral pipe, the number of the coolant flow through holes is the same as that of the spiral pipe, and the openings of the starting end of the spiral pipe correspond to and are communicated with the coolant flow through holes one to one.
4. A steam generator spiral heat exchange tube support structure which is removable without welding as claimed in claim 2, wherein: the cooling system also comprises a coolant inlet pipe, and the inlet collecting pipe is communicated with the coolant inlet pipe through a sealing flange plate.
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| CN201910033330.3A CN109830313B (en) | 2019-01-15 | 2019-01-15 | Steam generator spiral heat exchange tube supporting structure convenient to disassemble without welding |
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| CN109830313B true CN109830313B (en) | 2022-04-05 |
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| CN207689679U (en) * | 2018-01-24 | 2018-08-03 | 东华理工大学 | A kind of source peak detection system of cylinder bulk detector to point source |
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| US4644906A (en) * | 1985-05-09 | 1987-02-24 | Stone & Webster Engineering Corp. | Double tube helical coil steam generator |
| ITMI20071686A1 (en) * | 2007-08-22 | 2009-02-23 | Luciano Cinotti | NUCLEAR REACTOR COOLED TO WATER IN PRESSURE, PROVIDED WITH COMPACT STEAM GENERATORS |
| CN101442196B (en) * | 2008-12-18 | 2010-11-17 | 南京普天楼宇智能有限公司 | Mounting structure for module of household multimedia wiring case |
| CN101539287B (en) * | 2009-05-06 | 2011-01-05 | 清华大学 | Steam generator |
| US8971477B2 (en) * | 2009-06-10 | 2015-03-03 | Babcock & Wilcox Mpower, Inc. | Integral helical coil pressurized water nuclear reactor |
| CN103177783B (en) * | 2013-01-14 | 2015-07-15 | 上海核工程研究设计院 | Integrated steam generator of reactor |
| CN207250153U (en) * | 2017-07-31 | 2018-04-17 | 清华大学天津高端装备研究院 | integrated nuclear reactor |
| CN207367613U (en) * | 2017-07-31 | 2018-05-15 | 清华大学天津高端装备研究院 | A kind of integration cold containers nuclear reactor |
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| CN207689679U (en) * | 2018-01-24 | 2018-08-03 | 东华理工大学 | A kind of source peak detection system of cylinder bulk detector to point source |
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