CN212674122U - Fixing device for concrete embedded strain sensor of containment vessel of nuclear power station - Google Patents
Fixing device for concrete embedded strain sensor of containment vessel of nuclear power station Download PDFInfo
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- CN212674122U CN212674122U CN202021685456.3U CN202021685456U CN212674122U CN 212674122 U CN212674122 U CN 212674122U CN 202021685456 U CN202021685456 U CN 202021685456U CN 212674122 U CN212674122 U CN 212674122U
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- strain sensor
- reinforcement cage
- nuclear power
- fixing plate
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Abstract
The utility model relates to a fixing device for nuclear power station containment concrete buries formula strain sensor, include square reinforcement cage (1) and fix strain sensor (3) on reinforcement cage (1) different position, strain sensor (3) are fixed on reinforcement cage (1) through strain sensor mount (2), and strain sensor mount (2) are including being used for fixed plate (21) of being connected with reinforcement cage (1) and being used for rubber pad (22) of fixed strain sensor (3), rubber pad (22) are fixed on fixed plate (21). The utility model discloses a fixing device can satisfy the test requirement of hoop, vertical and radial three direction, and guarantees that strain sensor can not become flexible, slide, has improved strain sensor's stability and survival rate.
Description
Technical Field
The utility model belongs to the technical field of nuclear power station concrete containment performance monitoring, concretely relates to a fixing device for nuclear power station containment concrete buries formula strain sensor.
Background
In the construction process of the containment vessel of the nuclear power station, strain sensors are buried in the containment vessel of the nuclear power station to detect the internal strain condition, so that the safety of the containment vessel of the nuclear power station is ensured.
At present, the main means for embedding the strain sensor is as follows: before concrete pouring, the strain sensor is manually tied to a steel bar near the installation position by an operator, and before the strain sensor is tied, the sensor needs to be fixed to an auxiliary steel bar, and then the auxiliary steel bar is integrally fixed.
The current sensor layout mode has the following defects:
1) due to different proficiency and technical level of operators, parts of sensors are loosened and slipped when the sensors are manually fixed, and the testing accuracy is influenced;
2) the reinforcement fixed nearby is difficult to meet the requirement that the sensors are completely arranged according to the annular, vertical and radial test requirements;
3) sensors tied to the rebar lack protection and may be damaged by the vibrator during the concrete pouring stage.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model provides a fixing device for bury formula strain sensor in nuclear power station containment concrete can lay strain sensor according to the requirement of test, ensures strain sensor measured data's accuracy and survival rate.
In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a fixing device for nuclear power station containment concrete buries formula strain sensor, includes square frame shape steel reinforcement cage and fixes the strain sensor in the steel reinforcement cage different position, strain sensor passes through strain sensor mount and fixes on the steel reinforcement cage, and strain sensor mount is including being used for the fixed plate of being connected with the steel reinforcement cage and being used for the rubber pad of fixed strain sensor, the rubber pad is fixed on the fixed plate.
Further, according to the fixing device for the concrete embedded type strain sensor of the containment vessel of the nuclear power station, the rubber pad is of a semicircular plate-shaped structure and comprises a vertical surface and an arc-shaped surface, the vertical surface is connected with the fixing plate, the arc-shaped surface is provided with a concave clamping groove along the radial direction, and the strain sensor is clamped in the concave clamping groove.
Further, according to the fixing device for the concrete embedded strain sensor of the containment vessel of the nuclear power plant, the rubber pad is bound on the fixing plate through a metal binding belt or is adhered on the fixing plate through viscose glue.
Further, according to the fixing device for the embedded type concrete strain sensor for the containment vessel of the nuclear power plant, the number of the rubber pads is two, and the two rubber pads are respectively arranged at two ends of the fixing plate.
Further, according to the fixing device for the concrete embedded strain sensor for the containment vessel of the nuclear power plant, the fixing plate is of a plate-shaped structure, and bolt holes for connecting with the reinforcement cage are respectively formed in two ends of the fixing plate.
Further, according to the fixing device for the concrete embedded strain sensor of the containment vessel of the nuclear power plant, a groove for limiting the movement of the metal tie is further formed between the bolt holes at the upper end and the bolt holes at the two ends of the fixing plate.
Further, according to the fixing device for the concrete embedded strain sensor of the containment vessel of the nuclear power station, the reinforcement cage is provided with the extension bars for fixing the reinforcement cage in the directions of the X axis, the Y axis and the Z axis respectively.
The utility model has the advantages of:
1) the fixing device of the utility model can meet the test requirements in the circumferential direction, the vertical direction and the radial direction by arranging the square reinforcement cage, and can simplify the embedding process without fixing by means of auxiliary reinforcement; in addition, the steel reinforcement cage still has certain guard action to the strain sensor who buries underground, improves strain sensor's survival rate.
2) The utility model discloses a fixing device through set up the sensor mount on the steel reinforcement cage, places strain sensor in the rubber pad of strain sensor mount, and strain sensor can not become flexible, slide, ensures strain sensor stability and the accuracy of measuring data.
Drawings
Fig. 1 is a schematic structural view of the fixing device of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a view A-A of FIG. 2;
FIG. 4 is a view B-B of FIG. 2;
FIG. 5 is a schematic view of a rubber mat;
FIG. 6 is a front view of a rubber mat;
FIG. 7 is a side view of a rubber pad;
FIG. 8 is a schematic view of the structure of the fixing plate;
FIG. 9 is a front view of the fixing plate;
fig. 10 is a side view of the fixing plate.
In the figure:
1-reinforcement cage 2-strain sensor fixing frame 3-strain sensor 4-metal binding belt 5-bolt 6-extension bar 21-fixing plate 22-rubber pad 211-bolt hole 212-groove 221-concave clamping groove
Detailed Description
The following describes the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1-4, be the utility model provides a fixing device for nuclear power station containment concrete buries formula strain sensor, it includes square steel reinforcement cage 1 and sets up strain sensor 3 on steel reinforcement cage 1 different position, and strain sensor 3 passes through strain sensor mount 2 to be fixed on steel reinforcement cage 1.
Wherein, steel reinforcement cage 1 is formed by 12 steel bar welding (its specification and size are confirmed as required), and it has the bolt hole (the position of bolt hole is confirmed as required) to process on the reinforcing bar for fixed strain sensor mount 2. In addition, steel reinforcement cage 1 sets up extension bar 6 respectively for convenient fixed in its X axle, Y axle and Z axle direction, and this extension bar 6 can be with the reinforcing bar integrated into one piece on the steel reinforcement cage 1, also can weld on the reinforcing bar of steel reinforcement cage.
The strain sensor holder 2 includes a fixing plate 21 and a rubber pad 22 fixed to the fixing plate 21.
As shown in fig. 5-7, the rubber pad 22 is a semicircular plate-shaped structure (not limited thereto, but may be of other structural shapes as long as it can fix the strain sensor and can be matched with the fixing plate), and includes a vertical surface and an arc surface, the vertical surface is connected with the fixing plate 21, the arc surface is provided with a concave slot 221 along the radial direction, and the strain sensor 3 is clamped in the concave slot 31, so that the stability of the sensor is ensured, and the strain sensor is prevented from being damaged when concrete is poured. The rubber pad 22 may be bound to the fixing plate by a metal band 4 or adhered to the fixing plate by an adhesive. The rubber pad 22 may be provided in two pieces (but not limited to two pieces) and fixed at two ends of the fixing plate, respectively, so as to ensure the firmness of the strain sensor.
As shown in fig. 8-10, the fixing plate 21 is a plate-shaped structure, and bolt holes 211 are respectively formed at both ends thereof and connected to the reinforcement cage 1 by bolts 5. A groove 212 is further arranged between the bolt holes at the two ends of the fixing plate 21 and used for limiting the movement of the metal binding belt 4, so that the safety of the rubber pad 22 is ensured.
The utility model discloses a fixing device is applied to containment concrete strain sensor and buries the stage underground, and the installation as follows:
firstly, preparing 12 steel bars, punching holes on the 12 steel bars, processing the steel bar surface contacted with a fixing plate into a plane structure in order to be matched with the fixing plate, welding the 12 steel bars into a frame-shaped steel bar cage, and welding extension bars in the X-axis direction, the Y-axis direction and the Z-axis direction of the steel bar cage; secondly, processing the fixed plate and the rubber pad, arranging the strain sensor in a concave groove of the rubber pad, and fixing the rubber pad on a strain sensor fixed frame through a metal binding belt; and then, fixing the fixing plate on the reinforcement cage through bolts according to the tested azimuth requirement.
It should be noted that, in the actual installation process, the reinforcement cage with the sensor installed is only required to be fixed at the elevation and the angle of the corresponding measuring point.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto. The technical solutions disclosed by the present invention and the inventive concept thereof are equivalent or changed by those skilled in the art, and all the obtained technical solutions should be covered within the protection scope of the present invention.
Claims (7)
1. A fixing device for a concrete embedded strain sensor of a containment of a nuclear power station is characterized in that: including square frame shape steel reinforcement cage (1) and fix strain sensor (3) on steel reinforcement cage (1) different position, strain sensor (3) are fixed on steel reinforcement cage (1) through strain sensor mount (2), and strain sensor mount (2) are including being used for fixed plate (21) be connected with steel reinforcement cage (1) and being used for rubber pad (22) of fixed strain sensor (3), rubber pad (22) are fixed on fixed plate (21).
2. The fixture for a concrete buried strain sensor in a containment of a nuclear power plant as claimed in claim 1, wherein: the rubber pad (22) is of a semicircular plate-shaped structure and comprises a vertical surface and an arc-shaped surface, the vertical surface is connected with the fixing plate (21), the arc-shaped surface is provided with a concave clamping groove (221) along the radial direction, and the strain sensor (3) is clamped in the concave clamping groove (221).
3. The fixture for a concrete buried strain sensor in a containment vessel of a nuclear power plant as claimed in claim 2, wherein: the rubber pad (22) is bound on the fixing plate (21) through a metal binding tape (4) or adhered on the fixing plate (21) through adhesive.
4. The fixture for a concrete buried strain sensor in a containment vessel of a nuclear power plant as claimed in claim 3, wherein: the two rubber pads (22) are respectively arranged at two ends of the fixing plate (21).
5. The fixture for a concrete buried strain sensor in a containment vessel of a nuclear power plant as claimed in claim 4, wherein: the fixing plate (21) is of a plate-shaped structure, and bolt holes (211) used for being connected with the reinforcement cage (1) are formed in two ends of the fixing plate respectively.
6. The fixture for a concrete buried strain sensor in a containment vessel of a nuclear power plant as claimed in claim 5, wherein: and a groove (212) for limiting the movement of the metal binding belt (4) is also arranged between bolt holes at the upper end and the two ends of the fixing plate (21).
7. The fixing device for the concrete embedded strain sensor in the containment vessel of the nuclear power plant as claimed in any one of claims 1 to 6, wherein: the steel reinforcement cage (1) is provided with extension bars (6) used for fixing the steel reinforcement cage (1) in the X-axis direction, the Y-axis direction and the Z-axis direction respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021685456.3U CN212674122U (en) | 2020-08-13 | 2020-08-13 | Fixing device for concrete embedded strain sensor of containment vessel of nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021685456.3U CN212674122U (en) | 2020-08-13 | 2020-08-13 | Fixing device for concrete embedded strain sensor of containment vessel of nuclear power station |
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| Publication Number | Publication Date |
|---|---|
| CN212674122U true CN212674122U (en) | 2021-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021685456.3U Active CN212674122U (en) | 2020-08-13 | 2020-08-13 | Fixing device for concrete embedded strain sensor of containment vessel of nuclear power station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113237582A (en) * | 2021-04-12 | 2021-08-10 | 机械工业第九设计研究院有限公司 | Wall internal stress detection method and detection system for engineering acceptance |
-
2020
- 2020-08-13 CN CN202021685456.3U patent/CN212674122U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113237582A (en) * | 2021-04-12 | 2021-08-10 | 机械工业第九设计研究院有限公司 | Wall internal stress detection method and detection system for engineering acceptance |
| CN113237582B (en) * | 2021-04-12 | 2022-11-11 | 机械工业第九设计研究院股份有限公司 | Wall internal stress detection method and detection system for engineering acceptance |
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