Auxiliary device for penetration of prestressed Gamma steel cable of containment vessel of nuclear power station

Abstract

The utility model provides a nuclear power station containment vessel prestress Gamma steel strand pulling auxiliary device, and belongs to the technical field of nuclear power station containment vessel prestress strand pulling. The nuclear power station containment vessel prestress Gamma steel strand pulling auxiliary device comprises a device fixing plate, an anchorage device fixing shell, a connecting steel bar, a positioning steel bar and a bunched wire steel pipe; the edge of a shell body of the anchorage device fixing shell is fixedly connected with one end of a connecting steel bar in the vertical direction, the other end of the connecting steel bar is fixedly connected with a positioning steel bar in the vertical direction, and a bunching steel pipe is arranged in the vertical direction of the positioning steel bar. According to the method, the strand pulling hose of the strand pulling machine is connected with the strand steel pipe, so that the penetrating efficiency of the Gamma steel strand can be effectively improved, the common problems of low efficiency and repeated disc returning in a traditional strand pulling process are reduced, the safety of strand pulling construction of the prestressed Gamma steel strand is guaranteed, and the strand pulling construction efficiency of the prestressed Gamma steel strand is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of prestressed Gamma steel bundle threading in a containment of a nuclear power plant, and in particular to a prestressed Gamma steel bundle threading auxiliary device in a containment of a nuclear power plant. Background Art

[0002] The prestressed system of the nuclear island containment is distributed in four parts: the containment floor plate, cylinder, ring beam and dome. The distribution of the pipeline of the prestressed Gamma steel bundle is similar to the Greek letter "γ" (Gamma), and its two ends are anchored at the containment floor plate and the dome ring beam respectively. The pipeline is arranged in a hyperbolic dispersed layout in the space of the dome. The angles of the trumpet mouths of the prestressed Gamma steel bundles at the dome ring beam are different, resulting in different bundle threading angles, which will affect standardized construction. At the same time, due to the small working space at the dome ring beam, the bundle threading machine cannot be moved at will and cannot be constructed at the same position as the trumpet mouth. In addition, during the bundle threading process and the anchor installation process, the anchor has no fixed point, and the anchor cannot be suspended in the air and cannot be installed accurately, which greatly affects the bundle threading construction of the prestressed Gamma steel bundles.

[0003] Therefore, there is an urgent need for an auxiliary device for threading prestressed Gamma steel strands in the containment of a nuclear power plant. This auxiliary device can not only fit the bell mouths of different inclination angles and realize the suspended fixation of the anchor, but also facilitates the adjustment of the steel strands during the threading process, while ensuring the precise installation of the anchor. Summary of the Invention

[0004] Purpose of the invention: The purpose of the present invention is to provide a prestressed Gamma steel bundle threading auxiliary device for the containment of a nuclear power plant, which not only ensures the safety of the prestressed Gamma steel bundle threading construction, but also improves the efficiency of the prestressed Gamma steel bundle threading construction.

[0005] Technical solution: The present invention relates to a prestressed Gamma steel bundle threading auxiliary device for a nuclear power plant containment vessel, comprising a device fixing plate, an anchor fixing shell, connecting steel bars, positioning steel bars and a bundle steel pipe. The device fixing plate is fixedly connected to the anchor fixing shell in the vertical direction. The anchor fixing shell is fixedly connected to one end of the connecting steel bar in the vertical direction on the edge of the shell. The other end of the connecting steel bar is fixedly connected to the positioning steel bar in the vertical direction. A bundle steel pipe is provided in the vertical direction of the positioning steel bar. When the bundle threading operation is carried out, the device fixing plate of the bundle threading auxiliary device is fixed to the bell mouth, and then the anchor is placed into the anchor fixing shell. The bundle threading hose of the bundle threading machine is connected to the bundle steel pipe, and then the Gamma steel bundle is passed through the bundle threading machine hose, the bundle steel pipe and the anchor into the bell mouth in sequence. The present invention simplifies the bundle threading process by fixing the fixing plate of the bundle threading auxiliary device to the bell mouth. By connecting the bundle threading hose of the bundle threading machine to the bundle steel pipe, the threading efficiency of the Gamma steel bundle can be effectively improved, reducing the problems of low efficiency and multiple reels commonly seen in traditional bundle threading processes.

[0006] Furthermore, the device fixing plate is a fixing plate with a horseshoe-shaped opening, and the diameter of the horseshoe-shaped opening is larger than the diameter of the anchor. Since the diameter of the horseshoe-shaped opening is larger than the diameter of the anchor, it provides more space for placing and fixing the anchor, making the installation of the anchor more convenient and quick.

[0007] Furthermore, the anchor housing comprises a movable half-shell and a fixed half-shell, the fixed ends of which are rotatably connected by a rotating shaft, and the movable ends of which are movably connected by a locking bolt. The connection between the rotating shaft and the locking bolt allows for easy fine-tuning of the anchor's position and angle, ensuring proper installation and application of prestress.

[0008] Furthermore, the bottom of the fixed half shell is fixedly connected to the device fixing plate, and a gap is formed between the movable half shell and the device fixing plate. The fixed connection between the bottom of the fixed half shell and the device fixing plate provides stable support, while the adjustability of the movable half shell allows the structure to maintain stability under different working conditions.

[0009] Furthermore, the connecting steel bars include a middle steel bar located in the middle of the fixed half shell and arranged perpendicular to the fixed half shell. The other end of the middle steel bar away from the fixed half shell is fixedly connected to one end of two italic steel bars, and the other ends of the two italic steel bars are respectively fixed on the left and right sides of the fixed half shell.

[0010] Furthermore, diagonal reinforcement bars are provided between the middle reinforcement bars and the positioning reinforcement bars to ensure the stability of the positioning reinforcement bars.

[0011] Furthermore, a triangular steel plate is provided between the device fixing plate and the fixing half shell to ensure the stability of the entire device.

[0012] Furthermore, the locking bolt includes a fixed bolt fixed on the fixed half shell and a movable bolt fixed on the movable half shell, and the fixed bolt and the movable bolt are fixedly connected by a special-shaped nut.

[0013] Furthermore, the wire harness steel pipe and the anchor fixing shell are concentrically arranged to ensure the threading direction of the harness threading machine.

[0014] Beneficial effects: Compared with the prior art, the advantages of the present invention are:

[0015] (1) The horseshoe-shaped opening device fixing plate designed by the present invention can fit the bell mouth, can adapt to the beam threading construction of bell mouths with different inclination angles, and is easy to install and disassemble;

[0016] (2) The anchor fixing shell designed in the present invention is divided into a movable half shell and a fixed half shell, which makes it convenient to fix the anchor in the air, facilitates the observation of the strand threading status before and after the anchor, and can fine-tune the strand threading direction;

[0017] (3) The fixing half shell designed in the present invention is not only used to fix the anchor during the beam threading process, but also ensures the accurate installation of the anchor at the end of the dome ring beam.

[0018] (4) The present invention effectively corrects the bundle threading direction of the bundle threading machine by concentrically designing the anchor fixing shell and the bundle steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the anchor fixing shell in the present invention;

[0021] Figure 3 It is a schematic structural diagram of the lock bolt in the present invention;

[0022] Figure 4 It is a working state diagram of the present invention. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the embodiments.

[0024] like Figure 1The device depicted here is a prestressed gamma steel bundle threading auxiliary device for a nuclear power plant containment vessel, comprising a device fixing plate 1, an anchor fixing shell 2, connecting steel bars 4, positioning steel bars 5, and a wire bundle steel pipe 6. The device fixing plate 1 is vertically fixedly connected to the anchor fixing shell 2. The anchor fixing shell 2's shell edge is vertically fixedly connected to one end of the connecting steel bar 4. The other end of the connecting steel bar 4 is vertically fixedly connected to the positioning steel bar 5. A wire bundle steel pipe 6 is provided vertically to the positioning steel bar 5. During the threading operation, the device fixing plate 1 of the device is fixed to the bell mouth, the anchor is placed into the anchor fixing shell 2, the threading hose of the threading machine is connected to the wire bundle steel pipe, and the gamma steel bundle is then threaded sequentially through the threading hose, the wire bundle steel pipe, and the anchor into the bell mouth. The wire bundle steel pipe 6 is concentrically arranged with the anchor fixing shell 2. The device fixing plate 1 has a horseshoe-shaped opening, the diameter of which is larger than the diameter of the anchor.

[0025] like Figure 2 As shown, the anchor fixed shell 2 includes a movable half shell 201 and a fixed half shell 202. The fixed ends of the movable half shell 201 and the fixed half shell 202 are rotatably connected via a rotating shaft 204, and the movable ends of the movable half shell 201 and the fixed half shell 202 are movably connected via a locking bolt 203. The bottom of the fixed half shell 202 is fixedly connected to the device fixing plate 1, and a gap exists between the movable half shell 201 and the device fixing plate 1. The connecting steel bar 4 includes a middle steel bar 401 located in the middle of the fixed half shell 202 and arranged perpendicular to the fixed half shell 202. The other end of the middle steel bar 401 away from the fixed half shell 202 is fixedly connected to one end of two italic steel bars 402 and 403, respectively. The other ends of the two italic steel bars 402 and 403 are respectively fixed to the left and right sides of the fixed half shell 202.

[0026] like Figure 3 As shown, the locking bolt 203 includes a fixed bolt 2032 fixed on the fixed half shell 202 and a movable bolt 2031 fixed on the movable half shell 201 , and the fixed bolt 2032 and the movable bolt 2031 are fixedly connected by a special-shaped nut 2033 .

[0027] In this embodiment, in order to strengthen the fixation and ensure stability, diagonal reinforcement bars are provided between the middle reinforcement bar 401 and the positioning reinforcement bar 5. A triangular steel plate 3 is provided between the device fixing plate 1 and the fixing half shell 202.

[0028] like Figure 4 As shown, the working principle of this embodiment is:

[0029] When carrying out the bundle threading operation, first align the screw hole 101 of the device fixing plate 1 with the bell mouth 7, and fix the device on the safety shell 9 through the fixing bolt 8; then unlock the lock bolt 203 through the special-shaped nut 2033, open the movable half shell 201, put the anchor 10 into the fixed half shell 202, close the movable half shell 201, tighten the lock bolt 203 through the special-shaped nut 2033, and fix the anchor 10 in the air; then connect the bundle threading hose 12 of the bundle threading machine to the bundle steel pipe 6 to fix it. The function of the fixed bundle hose 12 is to correct the bundle threading direction; the steel strand 11 passes through the bundle threading machine hose 12 and the bundle steel pipe 6 in turn, and then passes through the anchor 10 to enter the bell mouth 7; after the bundle threading is completed, the lock bolt 203 is unlocked by the special-shaped nut 2033, and the movable half shell 201 is opened. The anchor 10 will be accurately installed on the bell mouth 7 due to the constraint of the fixed half shell 202 and the gravity of the steel strand 11; finally, release the fixing bolt 8 of the device fixing plate 1, and remove the device through the horseshoe-shaped opening.

[0030] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes may be made to it in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A prestressed Gamma steel bundle threading auxiliary device for a nuclear power plant containment vessel, characterized by: The invention comprises a device fixing plate (1), an anchor fixing shell (2), a connecting steel bar (4), a positioning steel bar (5) and a wire bundle steel pipe (6), wherein the device fixing plate (1) is fixedly connected to the anchor fixing shell (2) in the vertical direction, the shell edge of the anchor fixing shell (2) is fixedly connected to one end of the connecting steel bar (4) in the vertical direction, the other end of the connecting steel bar (4) is fixedly connected to the positioning steel bar (5) in the vertical direction, and the positioning steel bar (5) is provided with a wire bundle steel pipe (6) in the vertical direction; when the bundle threading operation is carried out, the device fixing plate (1) of the bundle threading auxiliary device is fixed on the bell mouth, and then the anchor is placed in the anchor fixing shell (2), and then the bundle threading hose of the bundle threading machine is connected to the wire bundle steel pipe, and then the Gamma steel bundle is passed through the bundle threading machine hose, the wire bundle steel pipe, and the anchor into the bell mouth in sequence.

2. The prestressed Gamma steel bundle threading auxiliary device for a nuclear power plant containment vessel according to claim 1, characterized in that: The device fixing plate (1) is a fixing plate having a horseshoe-shaped opening, and the diameter of the horseshoe-shaped opening is larger than the diameter of the anchor.

3. The auxiliary device for threading prestressed Gamma steel strands for a nuclear power plant containment vessel according to claim 1, characterized in that: The anchor fixed shell (2) comprises a movable half shell (201) and a fixed half shell (202), wherein the fixed ends of the movable half shell (201) and the fixed half shell (202) are rotationally connected via a rotating shaft (204), and the movable ends of the movable half shell (201) and the fixed half shell (202) are movably connected via a locking bolt (203).

4. The auxiliary device for threading prestressed Gamma steel strands for a nuclear power plant containment vessel according to claim 3, characterized in that: The bottom of the fixed half shell (202) is fixedly connected to the device fixing plate (1), and a gap exists between the movable half shell (201) and the device fixing plate (1).

5. The auxiliary device for threading prestressed Gamma steel strands for a nuclear power plant containment vessel according to claim 4, characterized in that: The connecting steel bar (4) comprises a middle steel bar (401) located in the middle of the fixed half shell (202) and arranged perpendicular to the fixed half shell (202), the other end of the middle steel bar (401) away from the fixed half shell (202) being fixedly connected to one end of two italic steel bars (402, 403), and the other ends of the two italic steel bars (402, 403) being fixed to the left and right sides of the fixed half shell (202), respectively.

6. The auxiliary device for threading prestressed Gamma steel strands for a nuclear power plant containment vessel according to claim 5, characterized in that: Diagonal bracing reinforcement bars are provided between the middle steel bars (401) and the positioning steel bars (5).

7. The auxiliary device for threading prestressed Gamma steel strands for a nuclear power plant containment vessel according to claim 3, characterized in that: A triangular steel plate (3) is provided between the device fixing plate (1) and the fixing half shell (202).

8. The auxiliary device for threading prestressed Gamma steel strands for a nuclear power plant containment vessel according to claim 3, characterized in that: The locking bolt (203) comprises a fixed bolt (2032) fixed on the fixed half shell (202) and a movable bolt (2031) fixed on the movable half shell (201); the fixed bolt (2032) and the movable bolt (2031) are fixedly connected via a special-shaped nut (2033).

9. The prestressed Gamma steel bundle threading auxiliary device for a nuclear power plant containment vessel according to claim 1, characterized in that: The wire bundle steel pipe (6) is arranged concentrically with the anchor fixing shell (2).

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