Assembly rack for nuclear power high-temperature reactor evaporator heat exchange internals

Abstract

The utility model provides an assembly rack for heat exchange internals of a nuclear power high-temperature reactor evaporator, which can meet the requirements of high precision and high reliability of assembly of the heat exchange internals of the high-temperature gas cooled reactor evaporator and improve the assembly efficiency and quality. The telescopic mechanism is arranged on the frame, and the positioning wheel is arranged on the telescopic mechanism; the internal part supporting tool is arranged at the top of the frame; the supporting frame is arranged on the top of the frame. The fixed base is fixedly arranged on the supporting frame; the transverse sliding seat is transversely and movably arranged on the fixed base; the transverse adjusting bolt is connected with the transverse sliding seat; the vertical adjusting plate is arranged on the transverse sliding seat in an up-down moving manner; the vertical adjusting bolt is connected with the vertical adjusting plate; the pressing hoop is fixedly arranged on the vertical adjusting plate; the water supply pipe supporting tool is arranged at the bottom of the frame and comprises a supporting seat and a water supply pipe tool; the supporting seat is arranged at the bottom of the frame; the flange seat is arranged on the supporting seat, and a positioning hole is formed in the flange seat; the wedge-shaped pad assembly is arranged between the flange base and the supporting base.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of assembly rack of nuclear power high temperature reactor evaporator heat exchange inner piece, for the production assembly of nuclear power high temperature gas cooled reactor steam generator heat exchange inner piece. BACKGROUND

[0002] With the increasing demand for clean energy worldwide, nuclear energy, as a stable and efficient energy form, has become increasingly important. The fourth generation of nuclear power technology (Generation IV) has become a key area of current nuclear power research and development due to its higher safety, economy, sustainability, and waste minimization. High temperature gas cooled reactor (HTGR) is one of the representatives of the fourth generation of nuclear power technology, with many advantages. It uses helium as a coolant and graphite as a moderator, allowing efficient operation at high temperatures and inherent safety. The evaporator of high temperature gas cooled reactor, as one of its key components, is a very important nuclear power component, which plays an important role in nuclear power plants. In nuclear reactors, nuclear reactions in fuel elements produce a large amount of heat energy, which needs to be dissipated through a coolant. The evaporator is a component that converts the heat energy in the coolant into steam to generate electricity. Its principle is to transfer the heat energy in the coolant to the outside of the reactor through heat conduction, and then transfer it to another working fluid through a heat exchanger, finally driving a steam turbine to generate electricity.

[0003] High temperature reactor evaporator is one of the key equipment of high temperature reactor system, and its assembly precision and quality have important influence on the performance of the whole reactor. Its structure is complex, bulky, and the manufacturing precision is extremely high. The traditional evaporator heat exchange inner piece assembly rack has the following problems:

[0004] (1) Insufficient assembly precision: the concentricity of heat exchange inner piece and rack is difficult to guarantee, affecting the performance of the equipment.

[0005] (2) Poor adjustment flexibility: lack of efficient leveling and positioning mechanism, low assembly efficiency. INVENTION CONTENTS

[0006] The utility model aims at overcoming the above-mentioned deficiencies in the prior art, and provides a kind of design reasonable's nuclear power high temperature reactor evaporator heat exchange inner piece's assembly rack, can satisfy the high precision and high reliability requirement of high temperature gas cooled reactor evaporator heat exchange inner piece assembly, improve assembly efficiency and quality.

[0007] The utility model discloses a technical scheme that solves the above problems is: nuclear power high temperature reactor evaporator heat exchange inner part's assembly bench, including frame, its characterized in that: still including centering positioning mechanism, inner part support frock and feed water pipe support frock, centering positioning mechanism includes locating wheel and telescopic mechanism, and telescopic mechanism sets up on the frame, and locating wheel sets up on telescopic mechanism, inner part support frock sets up at the top of frame, and it includes support frame and pipe mouth frock, support frame sets up at the top of frame, and pipe mouth frock includes fixed base, horizontal sliding seat, horizontal adjusting bolt, vertical adjusting plate, vertical adjusting bolt and pressure clamp, and fixed base is fixedly arranged on support frame, horizontal sliding seat is horizontally removed and is arranged on fixed base, horizontal adjusting bolt is connected with horizontal sliding seat, vertical adjusting plate is up and down removal and is arranged on horizontal sliding seat, vertical adjusting bolt is connected with vertical adjusting plate, and pressure clamp is fixedly arranged on vertical adjusting plate, feed water pipe support frock sets up at the bottom of frame, and it includes support seat and feed water pipe frock, support seat sets up at the bottom of frame, and feed water pipe frock includes flange seat and adjustment clamping assembly, and adjustment clamping assembly includes wedge-shaped pad assembly and clamping sleeve assembly, flange seat sets up on support seat, and flange seat is provided with positioning hole, and wedge-shaped pad assembly sets up between flange seat and support seat.

[0008] The inner part support frock further includes a horizontal fixing bolt, and the horizontal sliding seat is fixed on the fixed base through the horizontal fixing bolt.

[0009] The wedge-shaped pad assembly includes an upper wedge-shaped pad and a lower wedge-shaped pad that are stacked together.

[0010] The stacking surface between the upper wedge-shaped pad and the lower wedge-shaped pad is an inclined surface.

[0011] The clamping sleeve assembly includes an upper clamping sleeve and a lower clamping sleeve, the lower clamping sleeve is fixedly arranged in the positioning hole, and the upper clamping sleeve is fixed on the flange seat and is stacked together with the lower clamping sleeve after extending into the positioning hole.

[0012] The stacking surface between the upper clamping sleeve and the lower clamping sleeve is an inclined surface.

[0013] The telescopic mechanism includes an electric push rod, a swing positioning bracket, a pull rod assembly and a wheel bracket, the swing positioning bracket is fixedly arranged on the frame, the electric push rod and the pull rod assembly are both arranged on the swing positioning bracket, the electric push rod is connected with the pull rod assembly, the wheel bracket is hingedly arranged on the pull rod assembly, and the locating wheel is arranged on the pull rod assembly.

[0014] The adjustment clamping assembly is multiple and arranged in a ring shape, and the centering positioning mechanism is multiple and arranged in a ring shape.

[0015] The utility model also includes work platform, work platform fixedly arranged on frame.

[0016] The inner part supporting tool of the utility model is provided with a pair.

[0017] Compared with prior art, the utility model has the following advantages and effects:

[0018] 1, in order to guarantee the concentricity of heat exchange inner part and assembly stand, the centering positioning mechanism is set up, this mechanism holds up the outer edge of heat exchange inner part when the component produces, after centering, the centering positioning mechanism is fixed, so that the component and assembly stand keep concentric, improve assembly precision.

[0019] 2, assembly stand is equipped with inner part supporting tool and feed water pipe supporting tool, is used for supporting the parts of evaporator, ensures the stability and accurate positioning of component in the assembly process, improves assembly efficiency. DRAWINGS

[0020] Figure 1 It is the structure schematic diagram of the embodiment of the utility model.

[0021] Figure 2 It is the side view structure schematic diagram of the embodiment of the utility model. Figure 1

[0022] Figure 3 It is the structure schematic diagram of A-A of the embodiment of the utility model. Figure 1

[0023] Figure 4 It is the local overhead structure schematic diagram of the embodiment of the utility model.

[0024] Figure 5 It is the structure schematic diagram of the centering positioning mechanism of the embodiment of the utility model.

[0025] Figure 6 It is the structure schematic diagram of the feed water pipe supporting tool of the embodiment of the utility model.

[0026] Figure 7 It is the structure schematic diagram of the feed water pipe tool of the embodiment of the utility model.

[0027] Figure 8 It is the overhead structure schematic diagram of the embodiment of the utility model. Figure 7

[0028] Figure 9 It is the local structure schematic diagram of the embodiment of the utility model. Figure 7

[0029] Figure 10 It is the structure schematic diagram of the pipe mouth tool of the embodiment of the utility model.

[0030] ​​​​Figure 11 is a side view structural schematic diagram. Figure 10 is a side view structural schematic diagram.

[0031] Figure 12 is a top view structural schematic diagram. Figure 10 is a top view structural schematic diagram. DETAILED DESCRIPTION

[0032] The utility model will be further explained in detail in combination with the drawings and by examples, and the following examples are the explanation of the utility model, and the utility model is not limited to the following examples.

[0033] The assembly rack 1 of the embodiment of the utility model includes a frame 11, a centering positioning mechanism 12, an inner part support tool 13, a water supply pipe support tool 14 and a working platform 15.

[0034] The frame 11 adopts a sectional material structural mode, is welded into a frame form by steel structure as the main load-bearing component, and ensures the load-bearing capacity and stability of the rack.

[0035] The working platform 15 is fixedly arranged on the frame 11 and is used for hoisting and subsequent assembly work of the heat exchange inner part.

[0036] The centering positioning mechanism 12 can ensure the concentricity of the workpiece and the rack during assembly and welding, and the centering positioning mechanism 12 includes a positioning wheel 124 and a telescopic mechanism, the telescopic mechanism is arranged on the frame 11, the positioning wheel 124 is arranged on the telescopic mechanism, and the telescopic mechanism drives the positioning wheel 124 to extend and retract. The telescopic mechanism includes an electric push rod 121, a swing positioning support 122, a pull rod assembly 123, the positioning wheel 124 and a wheel support 125. The swing positioning support 122 is fixedly arranged on the frame 11. The electric push rod 121 and the pull rod assembly 123 are both arranged on the swing positioning support 122, and the electric push rod 121 is connected with the pull rod assembly 123. The wheel support 125 is hingedly arranged on the pull rod assembly 123, and the wheel support 125 can swing when the positioning wheel 124 contacts the workpiece, so that the positioning wheel 124 is more fitted to the workpiece. The positioning wheel 124 is arranged on the pull rod assembly 123, and the positioning wheel 124 is a conical wheel and is fitted to the shape of the workpiece. The centering positioning mechanism 12 is arranged in multiple and arranged in a ring shape. The centering positioning mechanism 12 is normally in a tightening state, when the workpiece is produced, the electric push rod 121 pushes the pull rod assembly 123 to expand, the pull rod assembly 123 drives the wheel support 125 and the positioning wheel 124 to extend, the positioning wheel 124 supports the outer edge of the workpiece, the electric push rod 121 is locked after centering, so that the workpiece and the rack remain concentric.

[0037] The inner part support tooling 13 is fixedly arranged on the top of the frame 11. The inner part support tooling 13 comprises a support frame 131 and a pipe mouth tooling 132. The support frame 131 is arranged on the top of the frame 11, and the pipe mouth tooling 132 is arranged on the support frame 131 and comprises a fixed base 133, a transverse sliding seat 134, a transverse adjusting bolt 135, a vertical adjusting plate 136, a vertical adjusting bolt 137, a pressing clamp 138, a sliding guide 139, a transverse fixing bolt 1310 and a vertical fixing bolt 1311. The fixed base 133 is fixedly arranged on the support frame 131; the transverse sliding seat 134 is movably arranged on the fixed base 133 in the transverse direction through the sliding guide 139 and is fixed by the transverse fixing bolt 1310; the transverse adjusting bolt 135 is arranged on the fixed base 133 and connected with the transverse sliding seat 134; the vertical adjusting plate 136 is movably arranged on the transverse sliding seat 134 in the vertical direction and is fixed by the vertical fixing bolt 1311; the vertical adjusting bolt 137 is arranged on the transverse sliding seat 134 and connected with the vertical adjusting plate 136; and the pressing clamp 138 is fixedly arranged on the vertical adjusting plate 136. The inner part support tooling 13 is arranged in pairs and used for supporting the outlet pipes on both sides of the upper part of the heat exchange inner part.

[0038] The water supply pipe supporting tool 14 is fixedly arranged at the bottom of the frame 11. The water supply pipe supporting tool 14 comprises a supporting seat 141 and a water supply pipe tool 142. The supporting seat 141 is arranged at the bottom of the frame 11, and the water supply pipe tool 142 is arranged on the supporting seat 141. The water supply pipe tool 142 comprises a flange seat 143 and an adjusting and clamping assembly, and the adjusting and clamping assembly comprises a wedge-shaped pad assembly and a clamping sleeve assembly. The flange seat 143 is arranged on the supporting seat 141 and fixed by bolts, and the middle part of the flange seat 143 is provided with a positioning hole 1431. The wedge-shaped pad assembly is arranged between the flange seat 143 and the supporting seat 141, and comprises an upper wedge-shaped pad 144 and a lower wedge-shaped pad 145. The upper wedge-shaped pad 144 and the lower wedge-shaped pad 145 are stacked together, and the stacking surface between the upper wedge-shaped pad 144 and the lower wedge-shaped pad 145 is inclined. Therefore, by adjusting the position between the upper wedge-shaped pad 144 and the lower wedge-shaped pad 145, the height of the wedge-shaped pad assembly can be adjusted, and thus the height of the flange seat 143 at the position of the wedge-shaped pad assembly can be adjusted, so that flexible leveling is realized. The clamping sleeve assembly is arranged on the flange seat 143, and comprises an upper clamping sleeve 146 and a lower clamping sleeve 147. The lower clamping sleeve 147 is fixedly arranged on the hole wall of the positioning hole 1431 of the flange seat 143, and the upper clamping sleeve 146 is fixed on the flange seat 143 by bolts. The upper clamping sleeve 146 extends into the positioning hole 1431 and is stacked together with the lower clamping sleeve 147. The stacking surface between the upper clamping sleeve 146 and the lower clamping sleeve 147 is inclined. Therefore, when the upper clamping sleeve 146 is pressed downward, the upper clamping sleeve 146 moves inward, so that the workpiece can be better pressed. The adjusting and clamping assembly is multiple and arranged in a ring shape. Therefore, the height of the flange seat 143 at multiple positions can be adjusted, so that the flange seat 143 is more matched with the workpiece, and multiple positions of the workpiece can also be clamped and fixed.

[0039] The working method of the embodiment of the utility model is as follows

[0040] The horizontal position of the horizontal sliding seat 134 on the fixed base 133 is adjusted through the horizontal adjusting bolt 135, the horizontal sliding seat 134 is fixed through the horizontal fixing bolt 1310 after being moved into position, the vertical position of the vertical adjusting plate 136 on the horizontal sliding seat 134 is adjusted through the vertical adjusting bolt 137, the vertical adjusting plate 136 is fixed through the vertical fixing bolt 1311 after being moved into position, and thus the vertical and horizontal positions of the pressing clamp 138 are adjusted, so that the pressing clamp 138 is matched with the inlet pipe position of the heat exchange inner part. Meanwhile, according to the size and position of the heat exchange inner part, the height of the wedge-shaped pad assembly is adjusted by adjusting the position between the upper wedge-shaped pad 144 and the lower wedge-shaped pad 145, so that the height of the flange seat 143 at the position of the wedge-shaped pad assembly is adjusted, and the flange seat 143 is kept concentric with the water supply pipe at the bottom of the heat exchange inner part. After being adjusted, the flange seat 143 and the supporting seat 141 are fixed through bolts.

[0041] After the heat exchange inner part is installed into the frame 11 by hoisting, the electric push rod 121 pushes the pull rod assembly 123 to expand, the pull rod assembly 123 drives the wheel support 125 and the positioning wheel 124 to extend, the positioning wheel 124 supports the outer edge of the heat exchange inner part, the centering is locked, the electric push rod 121 is locked, so that the heat exchange inner part and the rack are kept concentric; the outlet pipes on the upper two sides of the heat exchange inner part are respectively installed into the pressing clamps 138 of a pair of inner part support tools 13 for fixation, the bottom of the heat exchange inner part is supported on the flange seat 143, the feed water pipe at the bottom of the heat exchange inner part is installed into the lower clamping sleeve 147 of the positioning hole 1431, then the upper clamping sleeve 146 is installed, the upper clamping sleeve 146 and the support seat 141 are fixed by bolts, and the upper clamping sleeve 146 presses the feed water pipe.

[0042] Then the heat exchange inner part can be cleaned.

[0043] The specific embodiments of the utility model are introduced in detail above, for the technical personnel in the technical field, on the premise of not departing from the principle of the utility model, the utility model can be improved and modified in several ways, and these improvements and modifications also belong to the protection scope of the utility model claim.

Claims

1. An assembly stand for the heat exchange internals of a nuclear power high-temperature reactor evaporator, comprising a frame; characterized in that: It also includes a centering and positioning mechanism, internal component support fixtures and water supply pipe support fixtures; the centering and positioning mechanism includes a positioning wheel and a telescopic mechanism, the telescopic mechanism is mounted on the frame and the positioning wheel is mounted on the telescopic mechanism; The internal support fixture is located at the top of the frame and includes a support frame and a pipe fitting. The support frame is located at the top of the frame, and the pipe fitting includes a fixed base, a horizontal sliding seat, a horizontal adjusting bolt, a vertical adjusting plate, a vertical adjusting bolt, and a clamp. The fixed base is fixedly mounted on the support frame. The horizontal sliding seat moves horizontally on the fixed base. The horizontal adjusting bolt is connected to the horizontal sliding seat. The vertical adjusting plate moves up and down on the horizontal sliding seat. The vertical adjusting bolt is connected to the vertical adjusting plate. The clamp is fixedly mounted on the vertical adjusting plate. The water supply pipe support fixture is located at the bottom of the frame and includes a support base and a water supply pipe fixture. The support base is located at the bottom of the frame, and the water supply pipe fixture includes a flange seat and an adjusting clamping assembly. The adjusting clamping assembly includes a wedge gasket assembly and a clamping sleeve assembly. The flange seat is mounted on the support seat and has positioning holes. The wedge gasket assembly is located between the flange seat and the support seat.

2. The assembly stand for the heat exchange internals of the nuclear power high-temperature reactor evaporator according to claim 1, characterized in that: The internal component support fixture also includes a horizontal fixing bolt, and the horizontal sliding seat is fixed to the fixed base by the horizontal fixing bolt; the internal component support fixture also includes a vertical fixing bolt, and the vertical adjusting plate is fixed to the horizontal sliding seat by the vertical fixing bolt.

3. The assembly stand for the heat exchange internals of the nuclear power high-temperature reactor evaporator according to claim 1, characterized in that: The wedge-shaped pad assembly includes an upper wedge-shaped pad and a lower wedge-shaped pad that are stacked together.

4. The assembly stand for the heat exchange internals of the nuclear power high-temperature reactor evaporator according to claim 3, characterized in that: The overlapping surface between the upper wedge-shaped pad and the lower wedge-shaped pad is an inclined surface.

5. The assembly stand for the heat exchange internals of the nuclear power high-temperature reactor evaporator according to claim 1, characterized in that: The clamping sleeve assembly includes an upper clamping sleeve and a lower clamping sleeve. The lower clamping sleeve is fixedly disposed in the positioning hole, and the upper clamping sleeve is fixed on the flange seat. After the upper clamping sleeve extends into the positioning hole, it overlaps with the lower clamping sleeve.

6. The assembly stand for the heat exchange internals of the nuclear power high-temperature reactor evaporator according to claim 5, characterized in that: The overlapping surface between the upper clamping sleeve and the lower clamping sleeve is an inclined surface.

7. The assembly stand for the heat exchange internals of the nuclear power high-temperature reactor evaporator according to claim 1, characterized in that: The telescopic mechanism includes an electric push rod, a swing positioning bracket, a pull rod assembly, and a wheel bracket; the swing positioning bracket is fixedly mounted on the frame; both the electric push rod and the pull rod assembly are mounted on the swing positioning bracket, and the electric push rod is connected to the pull rod assembly; the wheel bracket is hinged to the pull rod assembly; and the positioning wheel is mounted on the pull rod assembly.

8. The assembly stand for the heat exchange internals of the nuclear power high-temperature reactor evaporator according to claim 1, characterized in that: The aforementioned adjusting clamping components are multiple and arranged in a ring; the aforementioned centering and positioning mechanisms are multiple and arranged in a ring.

9. The assembly stand for the heat exchange internals of the nuclear power high-temperature reactor evaporator according to claim 1, characterized in that: It also includes a work platform, which is fixedly mounted on the frame.

10. The assembly stand for the heat exchange internals of the nuclear power high-temperature reactor evaporator according to claim 1, characterized in that: The internal component support fixture is provided in pairs.

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