A mold for processing concrete test blocks of embedded sensors in nuclear power plants

Abstract

The present invention relates to a mold for processing a nuclear power plant embedded sensor concrete test block, comprising a molding container (1), wherein a sensor fixing assembly (2) is arranged in different orientations in the molding container (1), and the sensor fixing assembly (2) comprises a sensor fixing rod (21) penetrating the molding container wall and a rubber buckle (22) fixed on the sensor fixing rod (21), and the rubber buckle (22) is used to fix the sensor (3). The mold of the present invention can arrange the sensor in the required orientation to meet the test requirements; it can be disassembled and reused to improve work efficiency; after the test block is manufactured, the orientation of the sensor can be identified.

Description

Technical Field

[0001] The invention belongs to the technical field of nuclear power plant concrete containment performance monitoring, and in particular relates to a mould for processing a nuclear power plant embedded sensor concrete test block. Background Art

[0002] Concrete strain monitoring is one of the main contents of nuclear power plant pressure testing and normal service monitoring. It is an important part of the safety early warning system during containment testing and use. It can intuitively judge the actual stress state of the containment and the mechanical properties of concrete, and is an indispensable part of containment monitoring.

[0003] At present, the strain sensor is installed by fixing the sensor on the containment steel bar before pouring concrete. During the pouring process, the strain sensor is exposed to the outside without any protection measures, which is easy to be damaged by construction work. Once the embedded strain sensor is damaged, it cannot be replaced or repaired, which affects the later monitoring of the containment performance. In addition, the embedded strain sensor needs to measure the strain deformation of the containment concrete at a certain angle and orientation, and the traditional mold does not have a suitable location and method to fix the sensor. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a mold for processing concrete test blocks for embedded sensors in nuclear power plants. By prefabricating embedded concrete test blocks, the sensors are fixed in the concrete test blocks in advance according to different orientations, thus solving the problems that the sensors cannot be arranged according to a certain orientation angle and are damaged during the pouring process.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is: to provide a mold for processing a concrete test block of an embedded sensor in a nuclear power plant, including a molding container, in which a sensor fixing assembly is arranged along different azimuth angles, and the sensor fixing assembly includes a sensor fixing rod penetrating the wall of the molding container and a rubber buckle fixed on the sensor fixing rod, and the rubber buckle is used to fix the sensor.

[0006] Furthermore, in the mold for processing a concrete test block of an embedded sensor in a nuclear power plant as described above, the sensor fixing rod is a U-shaped structure, including two free ends, and the two free ends pass through the interior of the molding container and extend outward.

[0007] Furthermore, in the mold for processing a concrete test block of an embedded sensor in a nuclear power plant as described above, the rubber buckle is a circular plate-like structure, which has two concave grooves arranged along the circumference, one of which is used to engage with the sensor fixing rod, and the other is used to fix the sensor.

[0008] Furthermore, in the mold for processing a concrete test block of an embedded sensor in a nuclear power plant as described above, the shapes of the two concave grooves are respectively adapted to the cross-sectional shapes of the sensor fixing rod and the sensor.

[0009] Furthermore, in the mold for processing a concrete test block of an embedded sensor in a nuclear power plant as described above, the rubber buckle is tied to the sensor fixing rod by a cable tie or adhered to the sensor fixing rod by a self-adhesive tape.

[0010] Furthermore, as described above, in a mold for processing a concrete test block of an embedded sensor in a nuclear power plant, the molding container is a box structure surrounded by a bottom plate and four side plates, wherein the bottom plate and the side plates, as well as the side plates, are connected in a detachable manner.

[0011] Furthermore, in a mold for processing a concrete test block of an embedded sensor in a nuclear power plant as described above, the four side panels include two long side panels and two short side panels, the two long side panels are connected by a first reinforcing rod, the first reinforcing rod includes a first screw and a first lifting eye nut, the first screw passes through the two long side panels, and its two ends are fastened by the first lifting eye nuts.

[0012] Furthermore, in a mold for processing a concrete test block of an embedded sensor in a nuclear power plant as described above, the two long side plates are connected to the bottom plate by a second reinforcing rod, and the second reinforcing rod includes a second screw and a second lifting eye nut; a through hole is provided on the first screw; the second screw passes through the through hole on the first screw and the bottom plate, and its two ends are fastened by second lifting eye nuts.

[0013] Furthermore, in the mold for processing the concrete test block of embedded sensor in nuclear power plant as described above, two grooves are respectively arranged on the inner side surface of each long side plate in the vertical direction, and the two short side plates are inserted into the two corresponding grooves between the two long side plates.

[0014] Furthermore, in the above-mentioned mold for processing a concrete test block for embedded sensors in a nuclear power plant, a mark for identifying the sensor installation orientation is printed on the inner side surface of the side plate.

[0015] The beneficial technical effects of the present invention are:

[0016] (1) The mold of the present invention can arrange the sensor according to the required azimuth angle by setting the sensor fixing component, thereby meeting the test requirements; and the sensor will not loosen or slip, thereby improving the stability of the sensor and the accuracy of the detection data.

[0017] (2) The mold of the present invention can be disassembled and re-used by providing a reinforcing rod, thereby improving work efficiency during mass production.

[0018] (3) The mold of the present invention has marks printed on the inner side of the side plate, so that after the test block is manufactured, the sensor setting position can be distinguished.

[0019] (4) The mold of the present invention extends the sensor fixing rod outside the molding container, so that after the test block is demolded, the concrete test block can be conveniently fixed at a relative position to the containment steel mesh. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the mold of the present invention;

[0021] Figure 2 yes Figure 1 A top view of

[0022] Figure 3 yes Figure 2 AA view;

[0023] Figure 4 yes Figure 2 BB view;

[0024] Figure 5 is a schematic structural diagram of a first reinforcement rod;

[0025] Figure 6 yes Figure 5 Schematic diagram of the structure of the middle screw;

[0026] Figure 7 yes Figure 5 Schematic diagram of the structure of the middle lifting eye nut;

[0027] Figure 8 It is a schematic diagram of the structure of the long side panel;

[0028] Fig. 9 It is a top view of the long side panel;

[0029] Fig.10 It is a structural diagram of the short side plate;

[0030] Fig.11 It is a schematic diagram of the structure of the sensor fixing assembly;

[0031] Fig.12 yes Fig.11 The main view;

[0032] Fig.13 yes Fig.11 A schematic diagram of the structure of the middle sensor fixing rod;

[0033] Fig.14 yes Fig.11 Schematic diagram of the structure of the middle rubber buckle;

[0034] Fig.15It is a structural diagram of the concrete test block.

[0035] In the figure:

[0036] 1-molding container 11-bottom plate 12-side plate 121-long side plate 122-short side plate

[0037] 2-Sensor fixing assembly 21-Sensor fixing rod 22-Rubber buckle

[0038] 3-Sensor

[0039] 4-first reinforcing rod 41-first screw rod 42-first eye nut 43-through hole

[0040] 5-Second reinforcement rod DETAILED DESCRIPTION

[0041] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0042] It should be noted that the terms "first", "second", etc. in the specification, claims and drawings of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence, and it should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0043] like Figure 1-4 As shown, a mold for processing a nuclear power plant embedded sensor concrete test block provided by the present invention includes a molding container 1 and a sensor fixing assembly 2 arranged at different positions in the molding container 1, and the sensor fixing assembly 2 is used to fix the sensor 3.

[0044] The molding container 1 is a box structure surrounded by a bottom plate 11 and four side plates 12 (the molding container of the present invention is not limited to a box structure, other structural forms are also acceptable), wherein the bottom plate 11 and the side plates 12 and the side plates are connected in a detachable manner.

[0045] The bottom plate 11 is a square plate structure, and its size is determined according to needs. The bottom plate 11 is provided with connecting holes for connecting with the side plates.

[0046] The four side panels 12 include two long side panels 121 and two short side panels 122. The two long side panels 121 are respectively provided with connection holes. The two long side panels 121 are connected by a first reinforcing rod 4, which includes a first screw rod 41 and a first eye nut 42. The first screw rod 41 has external threads at both ends, a through hole 43 in the middle, and an internal thread in the first eye nut 42. Figure 5-7 The first screw rod 41 passes through the connection holes on the two long side plates 121, and its two ends are fastened by the first eye nuts 42, so that the first reinforcing rod 4 can detachably connect the two long side plates 121 together.

[0047] The two long side panels 121 are connected to the bottom plate 11 through the second reinforcing rod 5. It should be noted that the second reinforcing rod 5 has the same structure as the first reinforcing rod 4. The second reinforcing rod 5 includes a second screw and a second eye nut; the second screw passes through the through hole 43 on the first screw and the connecting hole on the bottom plate 11, and its two ends are fastened by the second eye nut, so that the second reinforcing rod 5 can detachably fix the two long side panels 121 to the bottom plate 11.

[0048] The two long side plates are both square plate-shaped structures, and two grooves are respectively arranged on the inner side surface of each long side plate 121. Figure 8 , 9 shown.

[0049] The two short side plates 122 are both square plate structures. Fig.10 As shown, the two short side panels 122 are connected to the two long side panels by plugging, that is, the two short side panels 122 are directly inserted into the corresponding grooves between the two long side panels 121 from top to bottom.

[0050] The inner side of the side plate is printed with X, Y, Z and other marks, which are used to identify the orientation of the sensor after the test block is formed. Among them, X represents the sensor set in the X-axis direction; Y represents the sensor set in the Y-axis direction; Z represents the sensor set in the Z-axis direction.

[0051] The sensor fixing assembly includes a sensor fixing rod 21 and a rubber buckle 22 fixed on the sensor fixing rod 21. Figure 11-13 shown.

[0052] The sensor fixing rod 21 is a U-shaped structure, including a closed end and two free ends, the closed end is arranged in the molding container, and the two free ends pass through the interior of the molding container 1 and extend outward, and the extension length is determined according to needs. Therefore, after the test block is formed, the test block can be fixed at a relative position of the steel mesh through the extension part.

[0053] The rubber buckle 22 is a circular plate-shaped structure (not limited to this shape, other shapes are also possible, and the present invention takes a circular plate-shaped structure as an example for explanation), and it is provided with two concave card grooves 221 along the circumferential direction, one of which is used to connect with the sensor fixing rod 21, and the other concave card groove is used to fix the sensor 3. Fig.14 As shown. The shapes and specifications of the two concave slots 221 are respectively adapted to the cross-sectional shapes and specifications of the sensor fixing rod 21 and the cross-sectional shapes and specifications of the sensor 3, so as to ensure the stability of the rubber buckle and the sensor. There are preferably two rubber buckles 22, but not limited to two, and the number is determined according to needs. In addition, in order to prevent the rubber buckle and the sensor from being displaced during the pouring of concrete, the present invention further fixes the rubber buckle 22 and the sensor to the sensor fixing rod 21 by a cable tie or adhesive.

[0054] The mold of the present invention is to fix the sensor in the mold in advance, and to form a concrete test block with the sensor after pouring concrete. The specific operation steps are as follows:

[0055] a. Connect one bottom plate and four side plates to form a cubic trough container;

[0056] b. Pass the sensor fixing components in three directions through the connection holes on the side panels and fix them with rubber gaskets and nuts;

[0057] c. Fix the rubber buckle on the sensor fixing rod, then fix the sensor on the two rubber buckles, and then use self-adhesive tape or cable ties to reinforce the sensor and rubber buckle so that they will not slip on the sensor fixing rod;

[0058] d. After checking that the whole system is correct, pour concrete into the forming container and vibrate it on a vibration table;

[0059] e. After the concrete solidifies, measure the value of the sensor with a strain reader and compare it with the strain value before embedding to determine whether the function of the sensor is affected during the concrete pouring and solidification process;

[0060] f. Remove the formwork, unscrew the eye nuts, and slowly remove the four side panels and one bottom panel. The concrete test block with the sensor is formed. Fig.15 As shown;

[0061] g. During the on-site embedding process, the test block is fixed as a whole in the steel cage, and then the extended part of the sensor fixing rod is fixed at the relative position of the steel bar.

[0062] The above are only preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art can make equivalent substitutions or changes based on the technical solutions and inventive concepts disclosed by the present invention, and the obtained technical solutions should be covered within the protection scope of the present invention.

Claims

1. A mold for processing a concrete test block of an embedded sensor in a nuclear power plant, comprising a molding container (1), characterized in that: A sensor fixing assembly (2) is arranged at different azimuth angles in the molding container (1), the sensor fixing assembly (2) comprising a sensor fixing rod (21) penetrating the wall of the molding container and a rubber buckle (22) fixed on the sensor fixing rod (21), the rubber buckle (22) being used to fix the sensor (3); the sensor fixing rod (21) is a U-shaped structure, comprising two free ends, the two free ends penetrating from the interior of the molding container (1) and extending outwards; After the test block is formed, the test block can be fixed at a relative position of the steel mesh through the extension part; the rubber buckle (22) is a circular plate-shaped structure, and two concave card grooves (221) are arranged along the circumference, one of which is used to be clamped with the sensor fixing rod (21), and the other is used to fix the sensor (3).

2. A mold for processing a concrete test block of an embedded sensor in a nuclear power plant as claimed in claim 1, characterized in that: The shapes of the two concave slots (221) are respectively adapted to the cross-sectional shape of the sensor fixing rod (21) and the cross-sectional shape of the sensor (3).

3. A mold for processing a concrete test block of an embedded sensor in a nuclear power plant as claimed in claim 2, characterized in that: The rubber buckle (22) is tied to the sensor fixing rod (21) by a cable tie or adhered to the sensor fixing rod (21) by a self-adhesive tape.

4. A mold for processing a concrete test block of an embedded sensor in a nuclear power plant according to any one of claims 1 to 3, characterized in that: The molding container (1) is a box structure surrounded by a bottom plate (11) and four side plates (12), wherein the bottom plate and the side plates, as well as the side plates, are connected in a detachable manner.

5. A mold for processing a concrete test block of an embedded sensor in a nuclear power plant as claimed in claim 4, characterized in that: The four side panels (12) include two long side panels (121) and two short side panels (122). The two long side panels (121) are connected by a first reinforcing rod (4). The first reinforcing rod (4) includes a first screw rod (41) and a first eye nut (42). The first screw rod (41) passes through the two long side panels, and its two ends are fastened by the first eye nut (42).

6. A mold for processing a concrete test block of an embedded sensor in a nuclear power plant as claimed in claim 5, characterized in that: The two long side plates (121) are connected to the bottom plate (11) via a second reinforcing rod (5), the second reinforcing rod (5) comprising a second screw rod and a second eye nut; a through hole (43) is provided on the first screw rod (41); the second screw rod passes through the through hole on the first screw rod and the bottom plate, and both ends of the second screw rod are fastened via second eye nuts.

7. A mold for processing a concrete test block of an embedded sensor in a nuclear power plant as claimed in claim 6, characterized in that: Two grooves are respectively arranged on the inner side surface of each long side plate (121) along the vertical direction, and the two short side plates (122) are inserted into the two corresponding grooves between the two long side plates (121).

8. A mold for processing a concrete test block of an embedded sensor in a nuclear power plant as claimed in claim 7, characterized in that: The inner side surface of the side plate (12) is printed with a mark for identifying the setting position of the sensor (3).

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