CN111946917A - Smooth pipe orifice fastening and connecting device - Google Patents

Smooth pipe orifice fastening and connecting device Download PDF

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Publication number
CN111946917A
CN111946917A CN202010915993.0A CN202010915993A CN111946917A CN 111946917 A CN111946917 A CN 111946917A CN 202010915993 A CN202010915993 A CN 202010915993A CN 111946917 A CN111946917 A CN 111946917A
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CN
China
Prior art keywords
component
assembly
split
positioning
integrated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010915993.0A
Other languages
Chinese (zh)
Inventor
周兴强
杨磊
颜令博
胡国峰
杜炎刚
纳红卫
王建伟
任文星
马伟
张玉东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Nuclear Engineering Research and Design Institute Co Ltd
Original Assignee
STATE NUCLEAR POWER ENGINEERING Co
Shanghai Nuclear Engineering Research and Design Institute Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by STATE NUCLEAR POWER ENGINEERING Co, Shanghai Nuclear Engineering Research and Design Institute Co Ltd filed Critical STATE NUCLEAR POWER ENGINEERING Co
Priority to CN202010915993.0A priority Critical patent/CN111946917A/en
Publication of CN111946917A publication Critical patent/CN111946917A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • F16L23/02—Flanged joints the flanges being connected by members tensioned axially
    • F16L23/024—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0206—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the collar not being integral with the pipe
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
    • F16L19/0218—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means comprising only sealing rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0231—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member with specially adapted means for positioning the threaded member behind the collar
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L21/00—Joints with sleeve or socket
    • F16L21/06—Joints with sleeve or socket with a divided sleeve or ring clamping around the pipe-ends
    • F16L21/065—Joints with sleeve or socket with a divided sleeve or ring clamping around the pipe-ends tightened by tangentially-arranged threaded pins
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C13/00—Pressure vessels; Containment vessels; Containment in general
    • G21C13/02—Details
    • G21C13/06—Sealing-plugs
    • G21C13/067—Sealing-plugs for tubes, e.g. standpipes; Locking devices for plugs
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Gasket Seals (AREA)

Abstract

The invention discloses a smooth pipe orifice fastening and connecting device which sequentially comprises a split type positioning threaded component, a transitional connection wedge-shaped component (M) and an integrated pressing threaded component (C) from inside to outside; the transitional connection wedge-shaped component (M) and the split positioning thread component are fastened and locked through a hook-shaped wrench clamping groove (G) on the integrated pressing thread component (C); the integrated pressing thread component limiting ring locking bolt (H) limits the axial displacement of the integrated pressing thread component (C) by fixing the integrated pressing thread component limiting ring (D). The smooth pipe orifice fastening and connecting device is simple in structure, the assembly and disassembly process is easy to operate, a lubricating reagent is not needed, items introduced into the IRWST water tank are reduced, and foreign matter risks are reduced; the assembly and disassembly process does not need to use hydraulic tools for rigid assembly and disassembly, and the mounting period of the temporary test equipment can be well shortened compared with the existing scheme.

Description

Smooth pipe orifice fastening and connecting device
Technical Field
The invention belongs to the field of debugging of a core cooling system of a passive nuclear power plant unit, and particularly relates to installation of an underwater pneumatic isolation device special for a containment pit direct injection pipeline and a containment pit recirculation pipeline flow resistance test (related to nuclear safety) in a unit debugging stage.
Background
A passive core cooling system (hereinafter referred to as PXS) is used as a special safety system of an AP/CAP series nuclear power plant, most of flow channel tests of the system are used for verifying the special safety function of the power plant, and related tests are main key paths executed according to a plan in a nuclear island debugging test and are key points and key points of the nuclear island debugging. According to the requirements of related files of the experimental design of the PXS system of the CAP series nuclear power plant, in the unit debugging phase, a pipeline flow resistance measurement test must be carried out on the direct injection from a built-in containment refueling water tank (hereinafter, IRWST) of the PXS system to a containment pit and the recycling pipeline of the containment pit, and the test is used for equivalently verifying the direct injection of the containment and the recycling capability of the containment pit under the working condition of serious accidents to meet the safety analysis and design requirements of the nuclear power plant.
Based on a CAP series nuclear power plant PXS system pipeline design structure, an inlet of a safety injection pipeline of a refueling water tank in a containment is a smooth pipe orifice, and the pipe orifice does not have any structural component capable of being provided with a pneumatic isolation device. In order to normally measure parameters such as test flow of a direct injection pipeline and a recycling pipeline of a containment pit and prevent related restrictions among different test pipelines, a temporary pneumatic isolation device is required to be installed and used for controlling a test medium during a test, and a non-test flow channel is effectively and reliably isolated. Based on the engineering practice of the application of a circular nesting device and a transition connecting piece for installing the temporary pneumatic isolation device for the conventional PXS system IRWST water tank inlet safety injection pipeline flow channel test, the smooth pipe orifice fastening connection device required by the installation of the test pneumatic isolation device is met by the independent development design according to the test requirements of the direct injection pipeline from the water tank inlet pipeline of the IRWST water tank of the subsequent CAP series nuclear power plant PXS system IRWST water tank to the containment pit and the recirculation pipeline flow channel of the containment pit.
Disclosure of Invention
The invention aims to meet the reliable installation of engineering test equipment, takes the guarantee of safe operation of the equipment as a guide, combines the actual requirements of the test, and autonomously develops and designs the smooth pipe orifice fastening and connecting device installed on the pneumatic isolating device for the related flow channel test of the water tank inlet safety injection pipeline of the PXS system safety IRWST of the CAP series nuclear power plant. The following technical scheme is adopted: the device comprises a split type positioning thread component, a transitional connection wedge component (M) and an integrated pressing thread component (C) from inside to outside in sequence;
the split positioning threaded component is a split positioning threaded component positioning block (B) which is positioned on the outer wall of the pipeline through a radial split positioning threaded component positioning block fastening bolt (F);
the transition connection wedge-shaped component (M) is matched with a wedge surface between the split type positioning thread components and is fastened and locked through a hook type spanner clamping groove (G) on the integrated pressing thread component (C); the transition connection wedge assembly (M) and the integral compression thread assembly (C) have a sliding clearance at a certain distance;
the integrated type compression thread component (C) outer side and the integrated type compression thread component limiting ring (D) are nested in a sliding mode, an integrated type compression thread component limiting ring locking bolt (H) is arranged on the circumference of the integrated type compression thread component limiting ring (D), and the integrated type compression thread component limiting ring locking bolt (H) is fixed to limit the integrated type compression thread component limiting ring (D) to limit axial displacement of the integrated type compression thread component (C).
Preferably, the integrated pressing threaded component limiting ring locking bolt (H) is of a hexagon socket type.
Preferably, the inner surface of the split positioning threaded component positioning block (B) is processed by diamond knurling.
Preferably, the split positioning thread assembly and the transition connection wedge assembly (M) are provided with locking threads on the outer sides of the overlapped matching sections, and the locking threads are in threaded engagement with the integrated pressing thread assembly (C).
Preferably, the integral pressing thread component (C) is a circular column with a built-in locking thread.
Preferably, the pneumatic isolation device interface flange (E) is welded after the integrated pressing thread component (C) is assembled.
Preferably, the pneumatic isolating device interface flange (E) is provided with a sealing positioning groove, and the pneumatic isolating device interface flange (E) and the split type positioning threaded assembly extrude the sealing piece through matching to realize reliable sealing of the outer wall of the pipeline.
The smooth pipe orifice fastening and connecting device is simple in structure, the assembly and disassembly process is easy to operate, a lubricating reagent is not needed, items introduced into the IRWST water tank are reduced, and foreign matter risks are reduced; the assembly and disassembly process does not need to use hydraulic tools for rigid assembly and disassembly, and the mounting period of the temporary test equipment can be well shortened compared with the existing scheme. The inner wall of the split type positioning threaded component is machined through prismatic knurls, sufficient friction force is guaranteed to exist between the component and the pipeline after sufficient torque is applied to the reinforcing bolt, axial sliding is prevented from occurring in the fastening process of the integrated type pressing threaded component, and the phenomenon that the equipment falls off due to the fact that the axial sliding occurs in the operation process of the pneumatic isolating device is prevented. The split type positioning threaded assembly and the transitional connection wedge-shaped assembly have enough tight fit degree through the fastening of the integrated pressing threaded assembly, the reliable sealing between each assembly and the pipeline is ensured, and the reliability is high.
Drawings
FIG. 1 is a schematic view of a smooth nozzle fastening assembly;
FIG. 2 is an assembly view and a cross-sectional view of a smooth bore fastening attachment;
FIG. 3 is a block structure diagram of a split positioning screw assembly;
wherein: a, a pipeline; b, positioning blocks of the split type positioning threaded assemblies; c, an integrated pressing thread component; d, an integrated pressing threaded component limiting ring; e-pneumatic isolating device interface flange; f, fastening bolts of positioning blocks of the split type positioning threaded assemblies; g, an integral pressing threaded component hook-shaped wrench clamping groove; h, an integrated pressing threaded component limiting ring locking bolt; i-a seal; j-built-in locking thread; k, an integral type compression threaded component limiting ring sliding gap; l-a flange bolt hole of an interface of the pneumatic isolating device; m-transition joint wedge assembly; n-a straight flange of a positioning block interface of the split type positioning threaded component; o-knurling the surface; p-sealing the mounting groove; q-bolt hole of split type positioning threaded component positioning block.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The invention will be further described with reference to fig. 1 and 2 for a smooth-mouthed fastening device.
The first part is a split positioning threaded component which consists of two split positioning threaded component positioning blocks B with the same structure, the pneumatic isolation device is connected through the matched pneumatic isolation device interface flanges E, a certain stretching allowance is designed between the pneumatic isolation device interface flanges E, the pneumatic isolation device interface flanges E are fastened and stretched through the split type positioning threaded component positioning block fastening bolt F during installation, the inner wall of the pipe is knurled to form a knurled surface O, so that the friction coefficient between the pipe and the outer wall of the pipe is increased, according to the cooperation degree between split type location screw thread subassembly locating piece fastening bolt F locking moment reinforcing component inner wall and the pipeline outer wall, prevent that the integral type from compressing tightly that subassembly C locking in-process from appearing subassembly endwise slip, also prevent that pneumatic separate device spare from taking place the axial displacement of pipeline during the operation, guarantee that the complete equipment has reliable location, this subassembly provides reliable installation sealing mounting groove P for pipeline outer wall seal I.
The second part is a transition connection wedge assembly M: this subassembly compresses tightly threaded component C, integral type and compresses tightly threaded component spacing ring D and pneumatic isolating device installation interface flange E, transitional coupling wedge subassembly M formation assembly body with the integral type, and this subassembly is processed the preparation through the forging and is formed. Firstly, the integrated pressing threaded component C is nested and assembled, then the integrated pressing threaded component limiting ring D is assembled, and finally the mounting interface flange E of the pneumatic isolation device is welded. Integral type compresses tightly threaded component spacing ring D and distributes 6 interior hexagonal integral types on 360 circumferences and compresses tightly threaded component spacing ring locking bolt H, after integral type compresses tightly threaded component C and locks split type location threaded component, compresses tightly threaded component spacing ring D through the fixed integral type of 6 interior hexagonal integral types compress tightly threaded component spacing ring locking bolt H, restriction integral type compresses tightly threaded component C axial displacement. The transitional connection wedge-shaped assembly M is provided with a sealing positioning groove, and the sealing element I is extruded by matching with the split positioning threaded assembly after installation, so that the outer wall of the pipeline is reliably sealed.
The third part is an integral compression screw assembly C: this subassembly overall structure is circular column, and built-in locking screw thread J uses dedicated colluding type spanner to pass through draw-in groove G fixed moment of applying after split positioning thread subassembly and transitional coupling wedge subassembly M cooperation, and rotatory integral type compresses tightly threaded component C and fastens split positioning thread subassembly locating piece B and provides axial tension, increases the cooperation degree between split positioning thread subassembly locating piece B and the transitional coupling wedge subassembly M, and the guarantee pipeline outer wall is reliably sealed. The transition connection wedge-shaped assembly M is reliably positioned, and the pneumatic isolating device interface flange E is convenient to install and match.
The split type positioning threaded assembly, the transitional connection wedge-shaped assembly and the integrated pressing threaded assembly, namely the integrated pressing threaded assembly limiting ring and the like are configured in the process, the pneumatic isolating device special for the test is assembled before being installed, and then the pneumatic isolating device is disassembled and assembled with an interface flange carried by the transitional connection wedge-shaped assembly, so that the assembly of the pneumatic isolating device special for the test can be completed.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations. The foregoing examples or embodiments are merely illustrative of the present invention, which may be embodied in other specific forms or in other specific forms without departing from the spirit or essential characteristics thereof. The described embodiments are, therefore, to be considered in all respects as illustrative and not restrictive. The scope of the invention should be indicated by the appended claims, and any changes that are equivalent to the intent and scope of the claims should be construed to be included therein.

Claims (7)

1. A smooth pipe orifice fastening and connecting device is characterized by comprising a split type positioning threaded component, a transitional connection wedge-shaped component (M) and an integrated pressing threaded component (C) from inside to outside in sequence;
the split positioning threaded component is a split positioning threaded component positioning block (B) which is positioned on the outer wall of the pipeline through a radial split positioning threaded component positioning block fastening bolt (F);
the transition connection wedge-shaped component (M) is matched with a wedge surface between the split type positioning thread components and is fastened and locked through a hook type spanner clamping groove (G) on the integrated pressing thread component (C); the transition connection wedge assembly (M) and the integral compression thread assembly (C) have a sliding clearance at a certain distance;
the integrated type compression thread component (C) outer side and the integrated type compression thread component limiting ring (D) are nested in a sliding mode, an integrated type compression thread component limiting ring locking bolt (H) is arranged on the circumference of the integrated type compression thread component limiting ring (D), and the integrated type compression thread component limiting ring locking bolt (H) is fixed to limit the integrated type compression thread component limiting ring (D) to limit axial displacement of the integrated type compression thread component (C).
2. A smooth-mouthed fastening connection, according to claim 1, characterized in that said integrated compression-screw assembly stop-ring locking bolt (H) is of the hexagon socket type.
3. The smooth-mouthed fastening connection, as recited in claim 1, wherein said split positioning screw assembly positioning block (B) has an inner surface formed by diamond knurling.
4. A smooth-bore fastening connection as claimed in claim 1, wherein said split set screw assembly is threaded with locking threads on the outside of the overlapping mating section of said transition wedge assembly (M), said locking threads being threadedly engaged with said integral compression screw assembly (C).
5. A smooth-mouthed fastening connection, according to claim 1, characterized in that said integral compression screw assembly (C) is of cylindrical shape with internal locking screw (J).
6. The smooth-pipe-mouth fastening connection according to claim 1, wherein the integral compression screw assembly (C) is assembled and then welded with the pneumatic isolator port flange (E).
7. The smooth-pipe-mouth fastening connection device according to claim 6, wherein the pneumatic isolator interface flange (E) is provided with a seal positioning groove, and the pneumatic isolator interface flange (E) and the split positioning threaded assembly press the seal member in cooperation to realize reliable sealing of the outer wall of the pipeline.
CN202010915993.0A 2020-09-03 2020-09-03 Smooth pipe orifice fastening and connecting device Pending CN111946917A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010915993.0A CN111946917A (en) 2020-09-03 2020-09-03 Smooth pipe orifice fastening and connecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010915993.0A CN111946917A (en) 2020-09-03 2020-09-03 Smooth pipe orifice fastening and connecting device

Publications (1)

Publication Number Publication Date
CN111946917A true CN111946917A (en) 2020-11-17

Family

ID=73367328

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010915993.0A Pending CN111946917A (en) 2020-09-03 2020-09-03 Smooth pipe orifice fastening and connecting device

Country Status (1)

Country Link
CN (1) CN111946917A (en)

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TA01 Transfer of patent application right

Effective date of registration: 20220616

Address after: No. 29 Hong Cao Road, Xuhui District, Shanghai

Applicant after: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd.

Address before: No. 29 Hong Cao Road, Xuhui District, Shanghai

Applicant before: STATE NUCLEAR POWER ENGINEERING Co.

Applicant before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd.

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CB02 Change of applicant information

Address after: No. 29 Hong Cao Road, Xuhui District, Shanghai

Applicant after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd.

Address before: No. 29 Hong Cao Road, Xuhui District, Shanghai

Applicant before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd.

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