Positioning tool for pressure vessel heat preservation layer support

Abstract

The utility model provides a positioning tool for a pressure vessel heat preservation layer support. The heat preservation layer support is installed on the wall of a pressure vessel heat preservation installation room. Comprising a supporting structure, a positioning platform and a fixing structure. Wherein the supporting structure is fixedly arranged on a wall; the positioning platform is installed above the supporting structure, and the heat preservation layer support is placed above the positioning platform so that the heat preservation layer support can be positioned at the installation position. The fixing structure is matched with the heat preservation layer support and the positioning platform so that the heat preservation layer support can be fixed to the installation position. According to the positioning tool, the heat preservation layer support can be prevented from being manually supported, and the risk of injury to constructors is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of nuclear island reactors, in particular to a positioning tool for a pressure vessel insulation layer bracket. Background Art

[0002] At present, the installation of the insulation layer bracket of the nuclear island reactor pressure vessel mainly relies on the combination of hand winches and lifting belts or manual support to control and adjust the insulation layer bracket in place.

[0003] However, the insulation layer bracket is shaped like an I-beam, with sharp ends and a single weight that cannot be underestimated. Maintaining the same posture for a long time will accelerate the physical exhaustion of the construction workers. If the insulation bracket slips out of the hands of the person without care, not only will there be a risk of falling objects causing damage to the bracket, but it is more likely to hit people or scratch people with sharp parts, causing personal injury and posing a threat to the safety of the construction workers. Utility Model Content

[0004] The purpose of the utility model is to provide a positioning tool for a pressure vessel insulation layer bracket, which can avoid manual support of the insulation layer bracket and reduce the risk of injury to construction workers.

[0005] One aspect of the present invention provides a positioning tool for a pressure vessel insulation layer bracket, wherein the insulation layer bracket is installed on the wall of the pressure vessel insulation installation room; it includes a supporting structure, a positioning platform and a fixing structure; wherein the supporting structure is fixedly arranged on the wall; the positioning platform is installed above the supporting structure, and the insulation layer bracket is placed above the positioning platform so that the insulation layer bracket can be positioned at the installation position; the fixing structure cooperates with the insulation layer bracket and the positioning platform to fix the insulation layer bracket at the installation position.

[0006] In one embodiment, the support structure includes a support member and an adjusting member; the adjusting member is fixedly disposed on the support member; the positioning platform and the adjusting member are movably connected to adjust the height of the positioning platform.

[0007] In one embodiment, the positioning platform is provided with a longitudinal adjustment hole; the supporting structure also includes a limiting member; the limiting member is movably provided on the adjusting member and can be fixed to the adjusting member at a preset position; the free end of the adjusting member can pass through the longitudinal adjustment hole, so that the positioning platform and the limiting member are offset from each other, and the limiting member fixed at the preset position provides support for the positioning platform.

[0008] In one embodiment, the number of the supporting member, the adjusting member, the limiting member, and the longitudinal adjusting hole are all two.

[0009] In one embodiment, the two longitudinal adjustment holes are symmetrically arranged on the positioning platform.

[0010] In one embodiment, the longitudinal adjustment hole is a waist-shaped hole; the positioning platform has a first side surface opposite to the wall, and the center line of the longitudinal adjustment hole is perpendicular to the first side surface.

[0011] In one embodiment, the fixing structure includes a clamping member and a fastener; the positioning platform is provided with a transverse adjustment hole; the fastener is assembled in the transverse adjustment hole through the through hole opened on the clamping member, so that the fastener is pressed downward to generate a clamping force acting on the insulation layer bracket to press the insulation layer bracket against the positioning platform.

[0012] In one embodiment, the number of the transverse adjustment holes is an even number; every two transverse adjustment holes correspond to one thermal insulation layer bracket, and are respectively located on both sides of the thermal insulation layer bracket.

[0013] In one embodiment, the number of the transverse adjustment holes is six; every two transverse adjustment holes form a group of transverse adjustment holes, and each group of transverse adjustment holes is arranged at intervals.

[0014] In one embodiment, the transverse adjustment hole is a waist-shaped hole; the positioning platform has a first side surface opposite to the wall, and the center line of the transverse adjustment hole is parallel to the first side surface.

[0015] The positioning tooling of the pressure vessel insulation layer bracket of the utility model supports and positions the insulation layer bracket through a positioning platform. The positioning tooling is smaller in size and lighter in weight than the insulation layer bracket, so that construction personnel can easily adjust the position of the bracket which is very large in size and weight, avoid manual support of the insulation layer bracket, reduce the risk of injury to construction personnel, and greatly improve the installation accuracy of the pressure vessel insulation layer bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments, in which:

[0017] Figure 1 It is a schematic diagram of an embodiment of a positioning tool for a pressure vessel insulation layer support according to the utility model. DETAILED DESCRIPTION

[0018] Reference will now be made in detail to embodiments of the present invention, one or more examples of which are illustrated in the accompanying drawings. Each example is provided to explain the present invention, not to limit the present invention. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope or spirit of the present invention. For example, features shown or described as part of one embodiment can be used together with another embodiment to produce yet another embodiment. Therefore, the present invention is intended to cover such modifications and variations as fall within the scope of the appended claims and their equivalents.

[0019] Figure 1 The invention shows an embodiment of a positioning fixture for a pressure vessel insulation support. The insulation support, which comprises the metal insulation barrel section and central radiation shielding assembly of the nuclear island reactor pressure vessel, is installed on the wall of the pressure vessel insulation installation room to support and secure the insulation layer.

[0020] The installation process of the insulation layer bracket is as follows: according to the position of the insulation layer bracket, lay out the line on the corresponding position of the wall, weld the bracket base plate to the wall, and then weld the insulation layer bracket to the bracket base plate to complete the installation.

[0021] At present, the positioning and installation of the insulation layer bracket mainly rely on the combination of a hand winch and a lifting belt or manual support to control and adjust the insulation layer bracket to install it in place.

[0022] However, the insulation layer bracket is shaped like an I-beam, with sharp ends and a single weight that cannot be underestimated. Maintaining the same posture for a long time will accelerate the physical exhaustion of the construction workers. If the insulation bracket slips out of the hands of the person without care, not only will there be a risk of falling objects causing damage to the bracket, but it is more likely to hit people or scratch people with sharp parts, causing personal injury and posing a threat to the safety of the construction workers.

[0023] The positioning fixture of the insulation layer support of a pressure vessel of the present invention includes a support structure 100, a positioning platform 200 and a fixed structure (not shown). Among them, the support structure 100 is fixedly arranged on a wall (not shown). The positioning platform 200 is installed above the support structure 100, and the insulation layer support is placed above the positioning platform 200 so that the insulation layer support can be positioned at the installation position. The insulation layer support can move along the extension direction of the upper surface of the positioning platform 200 on the positioning platform 200, so that the insulation layer support can be fine-tuned. The fixed structure cooperates with the insulation layer support and the positioning platform 200 to fix the insulation layer support at the installation position. The above-mentioned installation position can be understood as the corresponding position on the wall and the bottom plate of the support where the insulation layer support needs to be installed.

[0024] The positioning tooling of the pressure vessel insulation layer bracket of the utility model supports and positions the insulation layer bracket through the positioning platform 200. The positioning tooling is smaller in size and lighter in weight than the insulation layer bracket, so that construction personnel can easily adjust the position of the bracket which is very large in size and weight, avoid manual support of the insulation layer bracket, reduce the risk of injury to construction personnel, and greatly improve the installation accuracy of the pressure vessel insulation layer bracket.

[0025] like Figure 1 As shown, positioning platform 200 is relatively long and relatively narrow. A first side surface of positioning platform 200 along its length faces a wall. The lower surface of positioning platform 200 faces and is connected to support structure 100. The upper surface of positioning platform 200 is designed to cooperate with and support the insulation support. Positioning platform 200 can be constructed of No. 10 channel steel.

[0026] In one embodiment, the support structure 100 includes a support member 110, an adjustment member 120 and a limit member (not shown). The support member 110 can be selected as an angle steel with a specification of 50×50×5mm and a processing length of 500mm. Since the weight of the positioning platform 200 plus the insulation layer bracket is large, the force on the support member 110 is large, so one end of the support member 110 is connected to the wall by welding. The length of the support member 110 can be greater than the width of the positioning platform 200, which facilitates the adjustment of the distance between the positioning platform 200 and the wall. The support member 110 can also be selected as a triangular support structure 100, which has a better support effect.

[0027] The adjusting member 120 is fixedly arranged on the supporting member 110. The adjusting member 120 can be selected as a top screw (hereinafter, the reference numeral 120 represents the top screw), and the specification can be selected as an M12 connecting bolt. The limiting member can be selected as a limiting nut adapted to the top screw 120. The top screw 120 is spot welded to the supporting member 110 and is perpendicular to the supporting member 110. The limiting member is movably arranged on the top screw 120, that is, the top screw 120 and the limiting nut cooperate, that is, the free end of the top screw 120 can be screwed into the limiting nut.

[0028] The positioning platform 200 is provided with a longitudinal adjustment hole 210. This hole can be a waist-shaped hole, which facilitates adjustment of the adjustment member (i.e., the top screw 120) and the support member 110 relative to the positioning platform 200, thereby adjusting the relative position of the positioning platform 200 to the wall and the bracket base. The centerline of the longitudinal adjustment hole 210, i.e., the straight line BB connecting the center points of the large-diameter end of the longitudinal adjustment hole 210, is perpendicular to the first side surface and parallel to the centerline AA of the positioning platform 200.

[0029] When the top screw 120 screwed into the limiting nut passes through the longitudinal adjustment hole 210, the positioning platform 200 is assembled on the support 110. The positioning platform 200 is above the limiting nut and is against the limiting nut. The limiting nut fixed at the preset position provides support for the positioning platform 200. Personnel can adjust the height of the positioning platform 200 by screwing the limiting nut with a matching wrench, thereby adjusting the elevation of the insulation layer bracket. When the limiting nut is fixed at the preset position on the top screw 120, the elevation of the positioning platform 200 is determined to ensure the elevation of the insulation layer bracket. The above-mentioned preset position can be the position corresponding to the top screw 120 at any target elevation of the positioning platform 200.

[0030] During the installation of the positioning tooling, the longitudinal adjustment hole 210 is located directly above the support 110, and the center distance between the two longitudinal adjustment holes 210 is 800 mm. The position of the positioning platform 200 is fixed by welding the top screw 120 on the support 110 in advance, so that the center of gravity of the insulation layer bracket falls at the center of the positioning platform 200, so that the insulation layer bracket can be placed more safely and securely.

[0031] In the related art, it is impossible to perform precise leveling by relying on a hand chain hoist, fine adjustment is difficult and each adjustment can only be performed individually, which is inefficient. In this embodiment, the bracket installation is finely adjusted by the top screw 120, which has high adjustment efficiency and can achieve fine adjustment.

[0032] Continue to refer Figure 1 The limit nut can be selected as a set of nuts. The top screw 120 passes through the longitudinal adjustment hole 210, and the limit nuts are set above and below the positioning platform 200, which has a better fixing effect on the positioning platform 200.

[0033] In one embodiment, the number of each of the support member 110 , the top screw 120 , the stopper, and the longitudinal adjustment hole 210 is two. The two support members 110 can enhance the supporting effect of the positioning platform 200 .

[0034] Furthermore, two longitudinal adjustment holes 210 are symmetrically arranged on the positioning platform 200. Figure 1 As shown, the two longitudinal adjustment holes 210 are symmetrically arranged on both sides of the center line AA of the positioning platform 200 with the center line AA as the symmetry axis.

[0035] In one embodiment, the fixing structure includes a pressing member (not shown) and a fastener (not shown). The pressing member may be a pressing plate, and the fastener may be a pressing bolt and a pressing nut.

[0036] The positioning platform 200 is provided with a transverse adjustment hole 220. This hole 220 can be a waist-shaped hole, facilitating adjustment of the position of the clamping member and fastener relative to the positioning platform 200, thereby adjusting the relative position of the positioning platform 200 to the wall and the bracket base. The centerline of the transverse adjustment hole 220, i.e., the line CC connecting the center points of the large-diameter end of the transverse adjustment hole 220, is parallel to the first side surface and perpendicular to the centerline AA of the positioning platform 200.

[0037] In this embodiment, the fastener can be assembled in the transverse adjustment hole 220 through the through hole opened on the pressing member, so that the fastener is pressed downward to generate a pressing force acting on the insulation layer bracket, so as to press the insulation layer bracket against the positioning platform 200, thereby fixing the insulation layer bracket.

[0038] Specifically, a clamping bolt is passed through the through-hole in the pressure plate, and a clamping nut is screwed into one end of the clamping bolt. The clamping bolt is passed through the transverse adjustment hole 220, and the clamping nut is screwed into the other end of the clamping bolt, so that the pressure plate, the clamping bolt, and the clamping nut are all movably connected to the transverse adjustment hole 220. After the position of the insulation layer bracket is determined on the positioning platform 200, the pressure plate is pressed against the lower end of the insulation layer bracket, and the clamping nut is tightened to fix the position of the insulation layer bracket.

[0039] In one embodiment, the number of transverse adjustment holes 220 is an even number. Every two transverse adjustment holes 220 correspond to one insulation layer support and are located on either side of the insulation layer support. Every two transverse adjustment holes 220 form a group of transverse adjustment holes 220, and the center spacing of each group of two transverse adjustment holes 220 is 250 mm.

[0040] The pressure vessel insulation installation room is equilaterally octagonal, requiring three insulation brackets on each wall side. Therefore, the number of transverse adjustment holes 220 can be set to six. Each set of transverse adjustment holes 220 is spaced apart. This allows a single positioning fixture to simultaneously adjust all three insulation brackets on the same side. Prefabricated positioning fixtures can be welded to the wall, significantly improving the efficiency of installing the insulation brackets.

[0041] like Figure 1 As shown, the two longitudinal adjustment holes 210 are respectively located between the two groups of transverse adjustment holes 220 , and the longitudinal adjustment holes 210 and the transverse adjustment holes 220 are symmetrically arranged.

[0042] During the installation process, the thermal insulation layer support of the present invention contacts the compression bolts on both sides thereof to achieve fixation; the installation accuracy of the thermal insulation layer support is controlled by controlling the feed amount of the top screw 120.

[0043] Since the insulation layer bracket is made of stainless steel, and the hand chain hoist in the related art is made of carbon steel, it is easy for the carbon steel and the stainless steel to come into direct contact and cause contamination.

[0044] In one embodiment, the support structure 100, the positioning platform 200 and the fixed structure can be made of galvanized material, which avoids the stainless steel pollution problem in the related technology. The device is small in size, light in weight, made of universal materials, has low manufacturing costs, is easy to use, and does not cause environmental pollution.

[0045] The production process of the positioning tooling of the utility model in combination with the insulation layer bracket is as follows:

[0046] First, make the positioning platform 200: use a sawing machine to process the No. 10 channel steel to 1700mm, lay out the position lines of the longitudinal adjustment holes 210 and the transverse adjustment holes 220 on the channel steel according to the requirements of the tooling drawing, and use a milling machine to process the longitudinal adjustment holes 210 and the transverse adjustment holes 220 on the No. 10 channel steel.

[0047] Secondly, make the pressure plate: use a planer to process the pressure plate for fixing the insulation layer bracket, and use a drill press to drill a round hole in the pressure plate to fit the clamping bolt (the size of the round hole can be adaptively modified according to the clamping bolt matched on site, and this utility model does not limit it).

[0048] Finally, the support member 110 is manufactured by using a sawing machine to process a 50×50×5 mm angle steel to a length of about 500 mm, and the top wire 120 is spot-welded and fixed to the support member 110 .

[0049] At this point, all components of the positioning fixture of the pressure vessel insulation layer bracket have been processed.

[0050] The manufacturing order of the positioning platform 200 , the pressing plate and the supporting member 110 is not particular, and the manufacturing order can be flexibly selected according to actual conditions.

[0051] In combination with the above embodiments, the use process of the positioning fixture of the pressure vessel insulation layer support of the utility model in conjunction with the insulation layer support is as follows:

[0052] First, based on the layout and the position of the corresponding bracket base, weld one end of the support member 110 to the wall, and secure the positioning platform 200 to the top screw 120 using the matching limit nut. The limit nut can be used to adjust the elevation of the positioning platform 200. The elevation can also be fine-tuned by filling the space between the positioning platform 200 and the limit nut with a steel plate or other means.

[0053] After the elevation adjustment of the positioning platform 200 is completed, the thermal insulation layer bracket is placed on the upper surface of the positioning platform 200 and the position of the thermal insulation layer bracket is finely adjusted.

[0054] After determining the position of the insulation layer bracket, press the pressure plate on the lower end of the insulation layer bracket and tighten the compression nut to fix the insulation layer bracket.

[0055] After completing the welding of the insulation layer bracket and the bracket base plate, the fixed structure, the positioning platform 200 and the support structure 100 are disassembled, and the part of the wall where the support member 110 is welded is polished to complete the installation of the insulation layer bracket.

[0056] The above process can be monitored by measuring instruments (such as total stations) to achieve fine adjustment.

[0057] This positioning fixture is practically applicable in the CAP1000 nuclear island project. Field use has proven that it allows construction workers to easily adjust the position of large and heavy supports, significantly improving the installation accuracy of pressure vessel insulation supports. Furthermore, the device is compact, lightweight, made of universally compatible materials, offers low manufacturing costs, is easy to use, and does not cause environmental pollution.

[0058] Although the present invention is disclosed above with reference to preferred embodiments, this is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, any modifications, equivalent variations, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection defined by the claims of the present invention.

Claims

1. A positioning fixture for a pressure vessel insulation support, wherein the insulation support is mounted on the wall of a pressure vessel insulation installation room; It is characterized in that It includes a supporting structure, a positioning platform and a fixed structure; among which, The supporting structure is fixedly mounted on the wall; The positioning platform is installed above the supporting structure, and the thermal insulation layer bracket is placed above the positioning platform so that the thermal insulation layer bracket can be positioned at the installation position; The fixing structure cooperates with the thermal insulation layer bracket and the positioning platform to fix the thermal insulation layer bracket at the installation position; The support structure includes a support member and an adjusting member; the adjusting member is fixedly arranged on the support member; the positioning platform and the adjusting member are movably connected to adjust the height of the positioning platform; The positioning platform is provided with a longitudinal adjustment hole; the supporting structure also includes a limit member; the limit member is movably provided on the adjustment member and can be fixed to the adjustment member at a preset position; the free end of the adjustment member can pass through the longitudinal adjustment hole, so that the positioning platform and the limit member are offset from each other, and the limit member fixed at the preset position provides support for the positioning platform.

2. The positioning tool according to claim 1, characterized in that: The number of the supporting member, the adjusting member, the limiting member and the longitudinal adjusting hole are all two.

3. The positioning tool according to claim 2, characterized in that: The two longitudinal adjustment holes are symmetrically arranged on the positioning platform.

4. The positioning tool according to claim 1, characterized in that: The longitudinal adjustment hole is a waist-shaped hole; The positioning platform has a first side surface opposite to the wall, and the center line of the longitudinal adjustment hole is perpendicular to the first side surface.

5. The positioning tool according to any one of claims 1 to 4, characterized in that: The fixing structure includes a pressing member and a fastening member; The positioning platform is provided with a transverse adjustment hole; The fastener is assembled in the transverse adjustment hole through the through hole opened on the pressing member, so that the fastener is pressed downward to generate a pressing force acting on the insulation layer bracket to press the insulation layer bracket against the positioning platform.

6. The positioning tool according to claim 5, characterized in that: The number of the transverse adjustment holes is an even number; Every two of the transverse adjustment holes correspond to one of the thermal insulation layer brackets and are respectively located on both sides of the thermal insulation layer bracket.

7. The positioning tool according to claim 6, characterized in that: The number of the transverse adjustment holes is six; Every two of the transverse adjustment holes form a group of the transverse adjustment holes, and each group of the transverse adjustment holes is arranged at intervals.

8. The positioning tool according to claim 5, characterized in that: The transverse adjustment hole is a waist-shaped hole; The positioning platform has a first side surface opposite to the wall, and the center line of the transverse adjustment hole is parallel to the first side surface.

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