CN213874363U - Plumb line device for measuring displacement of containment - Google Patents
Plumb line device for measuring displacement of containment Download PDFInfo
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- CN213874363U CN213874363U CN202022847548.3U CN202022847548U CN213874363U CN 213874363 U CN213874363 U CN 213874363U CN 202022847548 U CN202022847548 U CN 202022847548U CN 213874363 U CN213874363 U CN 213874363U
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Abstract
The utility model relates to a plumb line device for measuring the displacement of a containment vessel, which comprises a positioning frame arranged on the outer wall of the containment vessel, wherein a measuring wire is arranged on the positioning frame; the containment displacement measuring device is characterized in that a plurality of measuring assemblies are arranged under the positioning frame at intervals along the same height direction of the containment, each measuring assembly comprises a support arranged on the outer wall of the containment and a plumb bob coordinatograph arranged on the support, a measuring hole penetrating through the upper surface and the lower surface of the support is arranged between the support and the plumb bob coordinatograph, a measuring wire penetrates through the measuring hole, the plumb bob coordinatograph measures the displacement data of the measuring wire so as to monitor the displacement condition of the containment, the containment displacement data of a plurality of height positions can be measured, the occupied space is small, the measuring efficiency is high, and the cost is relatively low.
Description
Technical Field
The utility model relates to a nuclear power technical field especially relates to a plumb line device for measuring containment displacement.
Background
As shown in fig. 1, the containment: the reactor plant is a cylindrical prestressed reinforced concrete structure with a quasi-spherical dome, and is a last barrier for preventing fission products from fuel and primary circuit radioactive substances from entering the environment. When a Loss of Coolant Accident (LOCA) occurs in the reactor, a large amount of radioactive and high-temperature and high-pressure steam-water mixture released can be contained and isolated to prevent damage to residents around the nuclear power plant. The lower drawing is a cross-sectional schematic diagram of a typical concrete containment vessel, which mainly comprises a dome 101, a ring beam 102, a cylinder 103, a valve base 104 and the like.
CTT (containment test) comprising: the method is used for simulating and verifying the sealing capability of the containment under the condition of large breach water Loss (LOCA) accident, has very important significance for guaranteeing the operation of a nuclear power plant, and needs to be tested in the machine set building stage and the machine set operation stage. The tester fills the containment building with compressed air until the pressure reaches a predetermined pressure (3-5bar.g) to measure the containment sealing performance and the containment concrete structure response (concrete strain, structural displacement and settlement, concrete surface crack width change).
The ring beam 102: an irregularly shaped area between the inner containment cylinder (vertical portion) and the dome (top sphere portion).
Displacement of a containment vessel: during the containment test, the expansion phenomenon of the concrete structure of the containment vessel under the internal pressure occurs, namely, one point on the cylinder body is displaced. Generally, tangential and radial displacements of the position of the wall of the containment structure need to be measured by using a plumb line, and measuring points at three elevations at the same angle of the containment structure need to be measured.
At present, containment displacement measurement is usually carried out by adopting a single plumb line measuring device, and measurement is carried out at a plurality of measuring points with different heights on the outer wall of a containment, so that more space is occupied, and the arrangement space of plant equipment and pipelines is occupied.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a plumb line device for measuring containment displacement.
The utility model provides a technical scheme that its technical problem adopted is: the plumb line device for measuring the displacement of the containment is constructed and comprises a positioning frame arranged on the outer wall of the containment, wherein a measuring wire is arranged on the positioning frame;
the measuring device comprises a containment vessel, and is characterized in that a plurality of measuring assemblies which are arranged along the same height direction of the containment vessel at intervals are arranged under the positioning frame, each measuring assembly comprises a support arranged on the outer wall of the containment vessel and a plumb bob coordinatograph arranged on the support, a measuring hole penetrating through the upper surface and the lower surface of the support is arranged between the support and the plumb bob coordinatograph, the measuring wire penetrates through the measuring hole, and the plumb bob coordinatograph measures the offset data of the measuring wire so as to monitor the displacement condition of the containment vessel.
Preferably, the periphery of the positioning frame is sleeved with a protection box.
Preferably, the lower parts of the positioning frame and the bracket are provided with sleeves sleeved on the periphery of the measuring wire.
Preferably, the sleeve comprises a galvanized steel pipe.
Preferably, a damping barrel is arranged below the measuring assembly positioned at the lowest position, engine oil is filled in the damping barrel, and a hammer body connected with the measuring wire is arranged in the engine oil.
Preferably, the hammer body comprises a plurality of hammer body units which are overlapped with each other.
Preferably, the plumb bob coordinatograph comprises a first parallel beam laser transmitter and a first receiver which are arranged in a first horizontal direction and positioned at two opposite sides of the measuring hole;
the second parallel beam laser transmitter and the second receiver are arranged in a second horizontal direction and are positioned on two opposite sides of the measuring hole;
the first horizontal direction and the second horizontal direction are perpendicular to each other.
Preferably, the display device further comprises a display screen connected with the first receiver and the second receiver.
Preferably, the measuring wire can be further provided with an adjusting card for adjusting the length.
Preferably, the measuring wire is a stainless steel wire or an indium tile wire.
Implement the utility model discloses following beneficial effect has: the plumb line device for measuring the displacement of the containment vessel can measure the displacement data of the containment vessel at a plurality of height positions, and has the advantages of small occupied space, high measurement efficiency and relatively low cost.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
FIG. 1 is a schematic structural view of a containment vessel;
fig. 2 is a schematic structural diagram of a plumb-line device for measuring displacement of a containment vessel according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a plumb line device for measuring displacement of a containment vessel according to another embodiment of the present invention;
fig. 4 is a schematic view of the plumb bob coordinatograph and the measuring wire of the present invention;
fig. 5 is a schematic view of the plumb bob coordinator according to the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "upper", "lower", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are configured and operated in specific directions based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the present invention, but do not indicate that the device or element referred to must have a specific direction, and thus, should not be construed as limiting the present invention.
It is also noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or intervening elements may also be present. The terms "first", "second", "third", etc. are only for convenience in describing the present technical solution, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
As shown in fig. 2, it is a plumb line device for measuring containment displacement of the utility model, including locating rack 1 of the outer wall of containment 100, be equipped with measuring wire 2 on locating rack 1, locating rack 1 periphery cover is equipped with guard box 3, and generally speaking, this measuring wire 2's extreme point is connected on the outer wall of containment 100 and enters into following measuring unit 4 with roughly with the parallel state of the outer wall of containment 100 through locating rack 1, and guard box 3 can adopt the metalwork to make, perhaps adopts the polymer that stability is good to make.
Several measuring components 4 arranged along the same height direction of the containment vessel 100 at intervals are arranged under the positioning frame 1, if three measuring components 4 are arranged, the three measuring components 4 are arranged on the same vertical line along the height direction at intervals, each measuring component 4 comprises a support 41 arranged on the outer wall of the containment vessel 100 and a plumb bob coordinatograph 42 arranged on the support 41, a measuring hole 43 penetrating through the upper surface and the lower surface of the support 41 is arranged between the support 41 and the plumb bob coordinatograph 42, the measuring wire 2 penetrates through the measuring hole 43, and the plumb bob coordinatograph 42 measures the offset data of the measuring wire 2 to monitor the displacement condition of the containment vessel 100. The bracket 41 may be a square bracket, or may be C-shaped or U-shaped, as long as a hole is provided in the middle thereof. The holder 41 may be a stainless steel holder. Further, the measurement hole 43 may be a square hole.
Preferably, the positioning frame 1 and the support 41 are provided with a sleeve 5 sleeved on the periphery of the measuring wire 2 at the lower part thereof, such as a sleeve 51 arranged below the positioning frame 1 in fig. 2, and sleeves 51', 51 ", etc. arranged below the supports at different heights, and meanwhile, the sleeve 5 is arranged above the plumb bob coordinatograph 42, only the measuring wire 2 passes through the measuring hole 43, and the sleeve 5 comprises a galvanized steel pipe. It can be understood that the sleeve 5 can protect the measuring wire 2, the measuring wire 2 is generally thin, the sleeve 5 can improve safety and avoid the influence of wind current and the like on the measuring wire 2, and of course, in some embodiments, the sleeve 5 may not be provided. Preferably, the measuring wire 2 is a stainless steel wire or an indium tile wire, although other wires may also be used. Preferably, the measuring wire 2 can also be provided with an adjusting card 8 for adjusting the length.
Preferably, a damping barrel 6 is arranged below the measuring assembly 4 positioned at the lowest part, engine oil is filled in the damping barrel 6, a hammer body 7 connected with the measuring wire 2 is arranged in the engine oil, the hammer body 7 is arranged to ensure that the measuring wire 2 is in a tensioning state, and the damping barrel 6 is filled with the engine oil so as to stop when the measuring wire 2 shakes.
Preferably, the hammer 7 comprises several hammer units stacked on top of each other, which may be steel plates, and the tension of the hammer 7 on the measuring wire 2 can be adjusted by selecting different numbers of steel plates. Of course, the hammer 7 may be a steel ball or the like.
With reference to fig. 4-5, the plumb bob coordinate apparatus 42 includes a first parallel beam laser transmitter 421 and a first receiver 422 disposed in the first horizontal direction and on two opposite sides of the measuring hole 43, and a second parallel beam laser transmitter 423 and a first receiver 422 disposed in the second horizontal direction and on two opposite sides of the measuring hole 43, where the first horizontal direction and the second horizontal direction are perpendicular to each other. The first receiver 422 and the first receiver 422 may be CCD sensor readers. After the first receiver 422 and the first receiver 422 receive the laser signal, the radial and tangential position data of the measuring wire 2 are processed to determine the displacement condition of the containment vessel 100.
Preferably, a display screen (not shown) connected to the first receiver 422 and the second receiver 424 is further included. The display screen can directly display the radial and tangential positions of the measuring wire 2, and when the position of the measuring wire 2 changes, the data displayed by the display screen changes.
Preferably, a power supply system is also included in connection with the measurement assembly 4 to provide power to the plumb bob co-ordinate system 42, etc.
Referring to fig. 3, the top end of the measuring wire may be set at a height of 45m, the measuring component 4 is set at a height of 28m, the measuring component 4' is set at a height of 10m, the measuring component 4 ″ is set at the valve base 104, the displacement of the valve base 104 is very small and can be ignored, and the displacement is set as a fixed point reference point, so that the radial and tangential position data of the measuring wire 2 at different heights can be measured respectively to determine the displacement condition of the containment vessel 100.
In the embodiment, the position of the positioning frame 1 is a measuring point R; the measuring component 4 is a measuring point U, the measuring component 4 'is a measuring point M, the measuring component 4' is a measuring point D, and the measuring point D is a fixed point reference point.
The initial radial readings of the measuring point U, the measuring point M and the measuring point D are respectively D0ru、D0rm、D0rdThe tangential readings are respectively D0tu、D0tm、D0td(ii) a At time i the radial readings are respectively Diru、Dirm、DirdThe tangential readings are respectively Ditu、Ditm、Ditd；
Because the measurement assembly 4 "is fixed to the containment valve base 104, the displacement there is very little and negligible; it can thus be derived that the actual displacement of the positioning frame 1 at time i from the initial time is:
radial displacement of the positioning frame 1: drr＝Dird–D0rdAnd tangential displacement at the positioning frame 1: dtr＝Ditd–D0td；
Radial displacement at measurement assembly 4: dru＝(Dird–D0rd)–(Diru–D0ru) Measuring the tangential displacement at the assembly 4: dtu＝(Ditd–D0td)–(Ditu–D0tu)；
Radial displacement at measurement assembly 4': drm＝(Dird–D0rd)–(Dirm–D0rm) Measuring the tangential displacement at assembly 4': dtm＝(Ditd–D0td)–(Ditm–D0tm)。
The plumb line device for measuring the displacement of the containment vessel can measure the displacement data of the containment vessel at a plurality of height positions, and has the advantages of small occupied space, high measurement efficiency and relatively low cost.
It is to be understood that the foregoing examples merely represent preferred embodiments of the present invention, and that the description thereof is more specific and detailed, but not intended to limit the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (10)
1. A plumb line device for measuring the displacement of a containment is characterized by comprising a positioning frame (1) arranged on the outer wall of the containment (100), wherein a measuring wire (2) is arranged on the positioning frame (1);
the measuring device is characterized in that a plurality of measuring assemblies (4) are arranged under the positioning frame (1) at intervals along the same height direction of the containment vessel (100), each measuring assembly (4) comprises a support (41) arranged on the outer wall of the containment vessel (100) and a plumb bob coordinatograph (42) arranged on the support (41), a measuring hole (43) penetrating through the upper surface and the lower surface of the support (41) is arranged between the support (41) and the plumb bob coordinatograph (42), the measuring wire (2) penetrates through the measuring hole (43), and the plumb bob coordinatograph (42) measures the offset data of the measuring wire (2) so as to monitor the displacement condition of the containment vessel (100).
2. The plumb line device for measuring displacement of containment vessel as claimed in claim 1 wherein the locating rack (1) is sleeved with a protective box (3) around its periphery.
3. The plumb line device for measuring displacement of containment vessel as claimed in claim 1 wherein the lower part of the positioning frame (1) and the bracket (41) is provided with a sleeve (5) sleeved on the periphery of the measuring wire (2).
4. Plumb line arrangement for measuring displacement of containment vessel in accordance with claim 3, characterized in that the bushing (5) comprises a galvanized steel tube.
5. The plumb line device for measuring displacement of a containment vessel as claimed in claim 1, wherein a damping barrel (6) is provided below the lowermost measuring unit (4), the damping barrel (6) is filled with engine oil, and a hammer (7) connected to the measuring wire (2) is installed in the engine oil.
6. Plumb line arrangement for measuring displacement of containment vessel in accordance with claim 5, characterized in that the hammer block (7) comprises several pieces of hammer block units superimposed on each other.
7. The plumb line apparatus for measuring containment displacement as recited in claim 1, wherein the plumb bob coordinator (42) comprises a first parallel beam laser transmitter (421) and a first receiver (422) disposed in a first horizontal direction and on opposite sides of the measuring hole (43);
a second parallel beam laser transmitter (423) and a second receiver (424) arranged in a second horizontal direction and located on opposite sides of the measuring hole (43);
the first horizontal direction and the second horizontal direction are perpendicular to each other.
8. The plumb line apparatus for measuring displacement of containment vessel as recited in claim 7, further comprising a display screen coupled to the first receiver (422) and the second receiver (424).
9. The plumb line device for measuring displacement of containment vessel as claimed in claim 1 wherein the measuring wire (2) may further be provided with an adjusting clip (8) for adjusting length.
10. Plumb line arrangement for measuring displacement of containment vessel in accordance with claim 1, characterized in that the measuring wire (2) is a stainless steel wire or an indium tile wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022847548.3U CN213874363U (en) | 2020-12-01 | 2020-12-01 | Plumb line device for measuring displacement of containment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022847548.3U CN213874363U (en) | 2020-12-01 | 2020-12-01 | Plumb line device for measuring displacement of containment |
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| CN213874363U true CN213874363U (en) | 2021-08-03 |
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| CN202022847548.3U Active CN213874363U (en) | 2020-12-01 | 2020-12-01 | Plumb line device for measuring displacement of containment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114894136A (en) * | 2022-04-25 | 2022-08-12 | 中广核工程有限公司 | Double-containment inner shell displacement measuring system and measuring method |
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2020
- 2020-12-01 CN CN202022847548.3U patent/CN213874363U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114894136A (en) * | 2022-04-25 | 2022-08-12 | 中广核工程有限公司 | Double-containment inner shell displacement measuring system and measuring method |
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