CN212365522U - Support platform of nuclear power reactor pressure vessel - Google Patents

Abstract

The utility model discloses a supporting platform of nuclear power reactor pressure vessel, include: the supporting frame comprises a plurality of fastening devices, each fastening device comprises an installation frame and a clamping assembly, each clamping assembly is arranged on the installation frame, each clamping assembly comprises a first clamping block, a second clamping block and a jacking mechanism, each clamping assembly can be placed into the corresponding U-shaped groove of the corresponding supporting boss, each jacking mechanism is used for driving the first clamping block and the second clamping block to be unfolded towards two sides so as to be tightly attached to the inner wall of the corresponding U-shaped groove to realize clamping, and the fastening devices are sequentially connected along the circumferential direction of the inner wall of the nuclear power reactor pressure vessel through second connecting parts to form the supporting frame; and the operating platform is connected with the supporting frame through a first connecting part and is supported above the supporting frame. The pressure container can be assembled by utilizing the existing structure of the pressure container, and the aim of not damaging equipment is fulfilled when the operation safety of personnel is ensured.

Description

Support platform of nuclear power reactor pressure vessel

Technical Field

The utility model is used for the nuclear power equipment field especially relates to a supporting platform of nuclear power reactor pressure vessel.

Background

The nuclear power reactor pressure vessel is a semi-closed vessel; for example, a particular type of nuclear reactor pressure vessel, see fig. 1, has a diameter of about 5000mm, a height of about 11000mm and a weight of more than 250 tons. According to the technological requirements, the inner wall and the flange sealing surface of the container are machined when the container is in a vertical state.

When the reactor pressure vessel carries out final vertical machining of the inner wall, an operator is required to timely inspect and observe a machining part, and the inner wall of the workpiece cannot enter the vessel to work due to the fact that the workpiece is in a rotating state (in a low-speed rotating state during observation) and does not have a supportable position except for a supporting boss (see fig. 2, the supporting boss is provided with a U-shaped groove).

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a nuclear power reactor pressure vessel's supporting platform, its existing structure that can utilize pressure vessel assembles, when the container is in vertical processing state, and personnel can be on the operation platform in the container, accomplish the observation and the inspection process of tool setting and machined surface in the course of working, and when guaranteeing personnel's operation safety, reach the purpose that does not harm equipment.

The utility model provides a technical scheme that its technical problem adopted is:

a support platform for a nuclear reactor pressure vessel, comprising:

the supporting frame is used for being connected with a supporting boss of the nuclear power reactor pressure vessel, the supporting frame comprises a plurality of fastening devices, each fastening device comprises a mounting frame and a clamping assembly, each clamping assembly is arranged on the mounting frame, each clamping assembly comprises a first clamping block, a second clamping block and a jacking mechanism, each clamping assembly can be placed into a U-shaped groove of the corresponding supporting boss, each jacking mechanism is used for driving the first clamping block and the second clamping block to be spread towards two sides so as to be tightly attached to the inner wall of the corresponding U-shaped groove to realize clamping, and the fastening devices are sequentially connected along the circumferential direction of the inner wall of the nuclear power reactor pressure vessel through second connecting parts to form the supporting frame;

and the operating platform is connected with the supporting frame through a first connecting part and is supported above the supporting frame.

In some embodiments, the tightening mechanism includes a cam connected to the mounting frame by a cam shaft connected to a handle, the cam having a first flange for spreading the first clamping block and a second flange for spreading the second clamping block.

In some embodiments, the first clamping block is connected to the mounting frame by a first clamping shaft and the second clamping block is connected to the mounting frame by a second clamping shaft.

In some embodiments, the first clamping block is provided with a first pressing cushion plate tightly attached to the inner wall of the U-shaped groove, and the first pressing cushion plate is detachably connected with the first clamping block; the second clamping block is provided with a second pressing base plate which is tightly attached to the inner wall of the U-shaped groove, and the second pressing base plate is detachably connected with the second clamping block.

In some embodiments, the mounting frame has an upper wall plate, a rear wall plate, a left wall plate and a right wall plate, and defines a profile space cooperating with the support boss, and the front and bottom of the profile space are open.

In some embodiments, the mounting frame is provided with a spacer.

In some embodiments, the first clamping shaft is mounted on the rear wall plate, a first spacer is disposed on the first clamping shaft between the first clamping block and the rear wall plate, the second clamping shaft is mounted on the rear wall plate, a second spacer is disposed on the second clamping shaft between the second clamping block and the rear wall plate, a support sleeve is disposed on the rear wall plate, the camshaft passes through the support sleeve and is connected with the handle, and a bearing sleeve is disposed between the support sleeve and the camshaft.

In some embodiments, further comprising

And the supporting frame comprises a plurality of second connecting parts, and the second connecting parts are used for sequentially connecting the fastening devices along the circumferential direction of the inner wall of the nuclear power reactor pressure vessel to form the supporting frame.

In some embodiments, the first connection part includes a main connection part connected between the operation platform and the mounting frame, and a sub-connection part connected between the main connection part and the second connection part.

In some embodiments, further comprising

A plurality of radial support means distributed circumferentially of the operation platform for supporting the operation platform against an inner wall of the nuclear power reactor pressure vessel.

One of the above technical solutions has at least one of the following advantages or beneficial effects: structural feature to nuclear power reactor pressure vessel, its inner wall does not have the supportable position except supporting the boss promptly, the technical scheme of the utility model provide basic support through a plurality of fastener that can support boss accordant connection to further build operation platform above it, its existing structure that can utilize pressure vessel assembles promptly, when the container is in vertical processing state, personnel can be on the operation platform in the container, accomplish the observation and the inspection process of tool setting and machined surface in the course of working, and when guaranteeing personnel's operation safety, reach the purpose of not damaging equipment.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic cross-sectional view of a nuclear power reactor pressure vessel;

FIG. 2 is a schematic structural view of a support boss of a nuclear reactor pressure vessel;

FIG. 3 is a schematic cross-sectional view of an embodiment of the present invention in a use state;

FIG. 4 is a top view of the structure of one embodiment shown in FIG. 3;

FIG. 5 is a side view of the structure of one embodiment of the fastening device shown in FIG. 3;

FIG. 6 is a schematic cross-sectional view of one embodiment of the fastening device shown in FIG. 3;

FIG. 7 is a cross-sectional view taken at D-D of FIG. 6;

FIG. 8 is an enlarged view of a portion of FIG. 3 at A;

FIG. 9 is an enlarged view of a portion of FIG. 3 at B;

fig. 10 is a cross-sectional view at C-C in fig. 3.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the present invention, if there is a description of directions (up, down, left, right, front and back), it is only for convenience of description of the technical solution of the present invention, and it is not intended to indicate or imply that the technical features indicated must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the utility model, the meaning of a plurality of is one or more, the meaning of a plurality of is more than two, and the meaning of more than two is understood as not including the number; the terms "above", "below", "within" and the like are understood to include the instant numbers. In the description of the present invention, if there is any description of "first" and "second" only for the purpose of distinguishing technical features, it is not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the present invention, unless otherwise explicitly defined, the terms "set", "install", "connect", and the like are to be understood in a broad sense, and for example, may be directly connected or may be indirectly connected through an intermediate medium; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be mechanically coupled, may be electrically coupled or may be capable of communicating with each other; either as communication within the two elements or as an interactive relationship of the two elements. The technical skill in the art can reasonably determine the specific meaning of the above words in the present invention by combining the specific contents of the technical solution.

The nuclear power reactor pressure vessel 1 is a semi-closed vessel; for example, a particular type of nuclear reactor pressure vessel 1, see fig. 1, has a diameter of about 5000mm, a height of about 11000mm and a weight of more than 250 tons. According to the technological requirements, the inner wall and the flange sealing surface of the container are machined when the container is in a vertical state. When the reactor pressure vessel 1 is subjected to final vertical machining of the inner wall, an operator is required to timely inspect and observe a machining part, and since the workpiece is in a rotating state (in a low-speed rotating state during observation), the inner wall of the workpiece has no supportable position except for the support boss 11 (see fig. 2, the support boss 11 is provided with the U-shaped groove 12).

Referring to fig. 3, the embodiment of the present invention provides a supporting platform of a nuclear power reactor pressure vessel 1, including an operation platform 2 and a supporting frame, wherein the supporting frame is used for being connected with a supporting boss 11 of the nuclear power reactor pressure vessel 1, the supporting frame includes a plurality of fastening devices 3, the fastening devices 3 include an installation frame 31 and a clamping assembly, the clamping assembly is disposed on the installation frame 31, the clamping assembly includes a first clamping block 32, a second clamping block 33 and a jacking mechanism, the clamping assembly can be placed in a U-shaped groove 12 of the supporting boss 11, the jacking mechanism is used for driving the first clamping block 32 and the second clamping block 33 to be propped open towards both sides so as to be tightly attached to an inner wall of the U-shaped groove 12 to realize clamping, and the installation frame 31 is locked on the supporting boss 11. The specific structure of the clamping assembly will be described in detail below. The plurality of fastening devices 3 are connected in sequence along the circumferential direction of the inner wall of the nuclear power reactor pressure vessel through the second connecting part 4 to form a supporting frame. The operation platform 2 is connected with the support frame by means of first connecting means and is supported above the support frame.

Structural feature to nuclear power reactor pressure vessel 1, its inner wall does not have the supportable position except supporting boss 11 promptly, the utility model discloses a technical scheme provides basic support through a plurality of fastener 3 that can support boss 11 accordant connection to further build operation platform 2 above it, its existing structure that can utilize pressure vessel 1 promptly assembles, when the container is in vertical processing state, personnel can be on operation platform 2 in the container, accomplish the observation and the inspection process of tool setting and machined surface in the course of working, and when guaranteeing personnel's operation safety, reach the purpose of not damaging equipment.

The jacking mechanism can adopt a hydraulic cylinder, namely the hydraulic cylinder is arranged between the first clamping block 32 and the second clamping block 33, and the first clamping block 32 and the second clamping block 33 are unfolded towards two sides by the hydraulic cylinder to be clung to the inner wall of the U-shaped groove 12 to realize clamping. The jacking mechanism can also adopt a threaded pipe, pipe orifices at two ends of the threaded pipe are connected with studs, when the clamping mechanism is used, the threaded pipe is rotated, the studs at two ends of the threaded pipe are in threaded transmission, and the first clamping block 32 and the second clamping block 33 are propped open towards two sides to be tightly attached to the inner wall of the U-shaped groove 12 to realize clamping.

In some embodiments, referring to fig. 6 and 7, the tightening mechanism comprises a cam 34, the cam 34 is connected to the mounting frame by a cam shaft 35, the cam shaft 35 is connected to the handle, the cam 34 has a first flange for spreading apart the first clamping block 32 and a second flange for spreading apart the second clamping block 33, referring to fig. 8 and 9, in use, the fastening device 3 is placed on the support boss 11, the handle 36 on the fastening device 3 is rotated, as the cam 34, the first clamping block 32 and the second clamping block 33 are driven during rotation, the arc radius of the cam 34 is continuously increased until the cam 34 presses the clamping blocks, so that the whole fastening device 3 is tightly attached to the inner wall of the U-shaped groove 12 of the supporting boss 11, due to the action of friction force, the whole fastening device 3 expands on the supporting boss 11 to achieve the connection effect, and at the moment, the cam 34 reaches the dead point position and is in a self-locking state.

When the workpiece is machined, the handle 36 is operated anticlockwise, the clamping block in contact with the cam 34 rotates around the clamping shaft, the arc radius of the cam 34 is continuously reduced along with the rotation of the handle 36 until the cam 34 loosens the clamping block, the clamping block is shifted, the inner wall of the product is completely loosened, and the fastening device 3 is detached from the product.

The first clamping block 32 and the second clamping block 33 are disposed or connected separately from the mounting frame 31, for example, in some embodiments shown in fig. 6 and 7, one end of the first clamping block 32 is connected to the mounting frame 31 through a first clamping shaft 37, and the other end extends in the rotation direction of the cam 34 during tightening; one end of the second clamp block 33 is connected to the mounting frame 31 via a second clamp shaft 38, and the other end extends in the rotational direction of the cam 34 at the time of expansion. When the cam 34 rotates, the first clamping block 32 rotates around the first clamping shaft 37, the second clamping block 33 rotates around the second clamping shaft 38, and expansion or release is finally achieved, and the first clamping block 32 and the second clamping block 33 are connected to the mounting frame 31 to form a whole, so that assembly and connection are facilitated.

Further, in some embodiments, referring to fig. 7, the first clamping block 32 is provided with a first pressing pad 39 abutting against the inner wall of the U-shaped groove 12, the first pressing pad 39 being detachably connected to the first clamping block 32; the second presss from both sides tight piece 33 and is equipped with the second and compresses tightly backing plate 310 with the inner wall hugging closely of U-shaped groove 12, and the second compresses tightly backing plate 310 and presss from both sides tight piece 33 and can dismantle the connection, and first compress tightly backing plate 39 and second compress tightly backing plate 310 pad and press from both sides tight piece and support between the boss 11, avoid pressing from both sides tight piece impaired, can dismantle the structural style of connection, also can guarantee that first compress tightly backing plate 39 and second compress tightly backing plate 310 convertibility.

The mounting frame 31 serves as a connection carrier for the fastening device 3, unitizes the parts of the fastening device 3 and further provides support for the first connecting member. The mounting frame 31 may be of a plate structure, a frame structure, a block structure, etc., for example, in some embodiments shown in fig. 6 and 7, the mounting frame 31 has an upper wall plate 311, a rear wall plate 312, a left wall plate 313 and a right wall plate 314, the mounting frame 31 defines a profile space cooperating with the support boss 11, the front and bottom of the profile space are open, and the first clamping block 32, the second clamping block 33 and the jacking mechanism are located inside the profile space. In use, the mounting frame 31 is fastened on the support boss 11, and the upper wall plate 311, the left wall plate 313 and the right wall plate 314 are respectively matched with the surface of the support boss 11, so that the assembly of the clamping component in the U-shaped groove 12 is rapidly realized. At the same time, the upper wall plate 311, the left wall plate 313 and the right wall plate 314 are matched with the surface of the support boss 11 and achieve a fastening position together with the clamping assembly.

In some embodiments, the mounting frame 31 is provided with spacers arranged between the mounting frame 31 and the support bosses 11 to avoid damaging the support bosses 11.

Referring to fig. 6, the first clamping shaft 37 is mounted on the rear wall plate 312, a first spacer 315 is disposed on the first clamping shaft 37 between the first clamping block 32 and the rear wall plate 312, the second clamping shaft 38 is mounted on the rear wall plate 312, a second spacer is disposed on the second clamping shaft 38 between the second clamping block 33 and the rear wall plate 312, a support sleeve 316 is disposed on the rear wall plate 312, the cam shaft 35 passes through the support sleeve 316 and is connected to the handle 36, and a bearing sleeve is disposed between the support sleeve 316 and the cam shaft 35.

Referring to fig. 3 and 10, the first connection part includes a main connection part 51 and a sub-connection part 52, the main connection part 51 is connected between the operation platform 2 and the mounting frame 31, the sub-connection part 52 is connected between the main connection part 51 and the second connection part 4, and the first connection part may be a pipe member disposed in a depth direction of the nuclear reactor pressure vessel 1 to provide support to the operation platform 2.

Referring to fig. 3 and 4, in some embodiments, the support platform further includes a plurality of radial support devices 6, the radial support devices 6 may be configured as bolts, screws, jacking cylinders, and the like, and the plurality of radial support devices 6 are distributed along the circumferential direction of the operation platform 2 and are used for supporting the operation platform 2 on the inner wall of the nuclear reactor pressure vessel 1.

In the description herein, references to the description of the term "example," "an embodiment," or "some embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.

Claims (9)

1. A support platform for a nuclear reactor pressure vessel, comprising:

the supporting frame is used for being connected with a supporting boss of the nuclear power reactor pressure vessel, the supporting frame comprises a plurality of fastening devices, each fastening device comprises a mounting frame and a clamping assembly, each clamping assembly is arranged on the mounting frame, each clamping assembly comprises a first clamping block, a second clamping block and a jacking mechanism, each clamping assembly can be placed into a U-shaped groove of the corresponding supporting boss, each jacking mechanism is used for driving the first clamping block and the second clamping block to be spread towards two sides so as to be tightly attached to the inner wall of the corresponding U-shaped groove to realize clamping, and the fastening devices are sequentially connected along the circumferential direction of the inner wall of the nuclear power reactor pressure vessel through second connecting parts to form the supporting frame;

and the operating platform is connected with the supporting frame through a first connecting part and is supported above the supporting frame.

2. The nuclear reactor pressure vessel support platform of claim 1, wherein the jacking mechanism includes a cam connected to the mounting frame by a cam shaft, the cam shaft connected to a handle, the cam having a first flange for spreading the first clamping block and a second flange for spreading the second clamping block.

3. The nuclear reactor pressure vessel support platform of claim 2, wherein the first clamping block is connected to the mounting frame by a first clamping shaft and the second clamping block is connected to the mounting frame by a second clamping shaft.

4. The nuclear reactor pressure vessel support platform of claim 3, wherein the first clamp block is provided with a first hold-down pad abutting an inner wall of the U-shaped channel, the first hold-down pad being removably connected to the first clamp block; the second clamping block is provided with a second pressing base plate which is tightly attached to the inner wall of the U-shaped groove, and the second pressing base plate is detachably connected with the second clamping block.

5. The nuclear reactor pressure vessel support platform of claim 3 or 4, wherein the mounting frame has an upper wall panel, a rear wall panel, a left wall panel and a right wall panel, the mounting frame defining a contoured space that cooperates with the support bosses, the contoured space being open at a front and bottom.

6. The nuclear reactor pressure vessel support platform of claim 5, wherein the mounting frame is provided with a spacer.

7. The reactor pressure vessel support platform of claim 5, wherein the first clamp shaft is mounted to the rear wall, a first spacer is disposed on the first clamp shaft between the first clamp block and the rear wall, the second clamp shaft is mounted to the rear wall, a second spacer is disposed on the second clamp shaft between the second clamp block and the rear wall, a support sleeve is disposed on the rear wall, the cam shaft passes through the support sleeve and is connected to the handle, and a bearing sleeve is disposed between the support sleeve and the cam shaft.

8. The nuclear reactor pressure vessel support platform of claim 1, wherein the first connection assembly includes a primary connection assembly connected between the operating platform and the mounting frame and a secondary connection assembly connected between the primary connection assembly and the second connection assembly.

9. The nuclear reactor pressure vessel support platform of claim 1, further comprising

A plurality of radial support means distributed circumferentially of the operation platform for supporting the operation platform against an inner wall of the nuclear power reactor pressure vessel.

Images