CN213750216U - Circuit breaker measuring device for nuclear power station - Google Patents

Abstract

The utility model belongs to the technical field of power transmission and distribution and protection, a circuit breaker measuring device for nuclear power station is related to. This a circuit breaker measuring device for nuclear power station includes: the angle measuring piece is provided with a measuring shaft, the measuring shaft is used for being connected with a rotating shaft of the circuit breaker, and the measuring shaft and the rotating shaft synchronously rotate; the angle measuring part is used for detecting the rotation angle of the rotating shaft; the fixed bolster, the fixed bolster is installed in the base of circuit breaker, and the fixed bolster is used for supporting angle measurement spare. The utility model provides a circuit breaker measuring device for nuclear power station can obtain the turned angle of pivot through the synchronous rotation of the pivot of measuring spindle and circuit breaker, and then learns the rotation stroke of the pivot of circuit breaker through turned angle, need not to carry out the conversion between displacement, resistance and the voltage, and it is convenient to detect, and detects the precision higher.

Description

Circuit breaker measuring device for nuclear power station

Technical Field

The utility model relates to a power transmission and distribution and protection technical field especially relate to a circuit breaker measuring device for nuclear power station.

Background

The high-voltage circuit breaker can not only cut off or close the no-load current and the load current in a high-voltage circuit, but also cut off the overload current and the short-circuit current through the action of a relay protection device when the system has a fault, and has a quite perfect arc extinguishing structure and enough current breaking capacity. However, when the circuit breaker is actually used, partial faults still exist. Therefore, the working performance of the circuit breaker can be well reflected by the detection of the running state of the circuit breaker. In the prior art, a linear resistance type sensor is mostly adopted to detect the running state of the circuit breaker. However, this approach has the following problems: 1. when the linear resistance sensor is used for measurement, the displacement change is converted into resistance change, and the resistance change is converted into voltage change, so that the test result has delay, and the measurement precision is low; 2. the fixing support structure adopted in the mode is complex and inconvenient to install.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a circuit breaker measuring device for a nuclear power station, which solves the technical problem of low measurement accuracy in detecting the operating state of the circuit breaker in the prior art.

A circuit breaker measurement apparatus for a nuclear power plant, comprising:

the angle measuring piece is provided with a measuring shaft, the measuring shaft is used for being connected with a rotating shaft of the circuit breaker, and the measuring shaft and the rotating shaft synchronously rotate; the angle measuring part is used for detecting the rotation angle of the rotating shaft;

the fixed bolster, the fixed bolster install in the base of circuit breaker, the fixed bolster is used for supporting the angle measurement spare.

In one embodiment, the fixing bracket comprises a base and a frame body;

the base is provided with a clamping groove, and the clamping groove is clamped on a base of the circuit breaker; one end of the frame body is fixed on the base, and the other end of the frame body is fixedly arranged on the angle measuring piece.

In one embodiment, the frame body comprises a first connecting member mounted on the base, a second connecting member fixedly arranged on the angle measuring piece and a first fastener;

one end of the first connecting member is provided with a first adjusting hole, one end of the second connecting member is provided with a second adjusting hole, and the first fastener penetrates through the first adjusting hole and the second adjusting hole to clamp the first connecting member and the second connecting member.

In one embodiment, the first adjusting hole is a first strip-shaped hole, and the first fastening piece can move along the length direction of the first adjusting hole; and/or the second adjusting hole is a second strip-shaped hole, and the first fastening piece can move along the length direction of the second adjusting hole.

In one embodiment, the fixing bracket further comprises a second fastener;

one end, far away from the first connecting member, of the first connecting member is provided with a third strip-shaped hole, the second fastener penetrates through the third strip-shaped hole and is fixedly arranged on the base, and the second fastener can move along the length direction of the third strip-shaped hole.

In one embodiment, the fixing bracket further comprises a third fastener;

one end, far away from the first connecting component, of the second connecting component is provided with an annular end face, the annular end face is pressed on the end part of the angle measuring piece, and the third fastening piece penetrates through the annular end face and is fixedly arranged on the angle measuring piece.

In one embodiment, the circuit breaker measuring apparatus for a nuclear power plant further includes a connector;

one end of the connector is connected to the measuring shaft, the other end of the connector is used for connecting the rotating shaft, and the rotating shaft can drive the measuring shaft to rotate synchronously through the connector;

the connector is provided with a helical cut encircling the axis of the connector.

In one embodiment, the connector comprises a transfer shaft and a flexible boot;

at least one pot head of change-over spindle is equipped with the flexile cover, the spiral incision set up in the flexile cover, just the spiral incision with the inner chamber intercommunication of flexile cover.

In one embodiment, the connector further includes a first abutting member, one end of the flexible sleeve is provided with a first nesting portion, the first nesting portion is nested on the adapter shaft, and the first abutting member passes through the first nesting portion and abuts against the adapter shaft;

and/or the presence of a gas in the gas,

the connector further comprises a second abutting piece, a second sleeving part is arranged at the other end of the flexible sleeve, the second sleeving part is sleeved on the measuring shaft, and the second abutting piece penetrates through the second sleeving part to abut against the measuring shaft.

In one embodiment, the angle measuring member is a rotary encoder.

The utility model has the advantages that:

the utility model provides a pair of circuit breaker measuring device for nuclear power station, including angle measurement spare and fixed bolster, the angle measurement spare is installed in the fixed bolster, and the fixed bolster is installed in the base of circuit breaker, and then realizes the support to the angle measurement spare. Wherein, angle measurement spare has the measuring spindle, and the measuring spindle is connected with the pivot of circuit breaker, and the measuring spindle can rotate with the pivot is synchronous. The angle measuring part is used for detecting the rotation angle of the rotating shaft. That is to say, the utility model provides a circuit breaker measuring device for nuclear power station can obtain the turned angle of pivot through the synchronous rotation of the pivot of measuring spindle and circuit breaker, and then learns the rotation stroke of the pivot of circuit breaker, also is the removal stroke of contact in the circuit breaker exactly through turned angle. Compared with the prior art in which the displacement change needs to be converted into the resistance change and then into the voltage change, the circuit breaker measuring device for the nuclear power station does not need to perform the conversion in the detection process, only needs to measure the rotation angle, can obtain the rotation stroke, and is convenient to detect. And the accuracy of the obtained measurement result is higher just because conversion of various parameters is not needed.

Drawings

Fig. 1 is a schematic diagram of a partial explosion of a circuit breaker measuring device for a nuclear power station according to an embodiment of the present invention;

fig. 2 is a partial schematic view of a fixing bracket in a circuit breaker measuring device for a nuclear power station according to an embodiment of the present invention;

fig. 3 is a partial schematic view of a connector connected to a measuring shaft and a rotating shaft in a breaker measuring device for a nuclear power station provided in an embodiment of the present invention.

Icon: 10-an angle measuring member; 11-measuring axis; 12-a cable; 20-fixing a bracket; 21-a base; 22-a frame body; 31-a rotating shaft; 32-a base; 40-a connector; 41-a transfer shaft; 42-a flexible sleeve; 211-card slot; 221-a first connecting member; 222-a second connecting member; 421-spiral cut; 2211-a first adjustment aperture; 2212-third strip aperture; 2221-a second adjustment aperture; 2222-annular end face; 4221-first fastening hole; 4231-second fastening hole.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1, fig. 1 shows a schematic partial explosion diagram of a circuit breaker measuring device for a nuclear power plant according to an embodiment of the present invention. An embodiment of the utility model discloses a circuit breaker measuring device for nuclear power station, including angle measurement spare 10 and fixed bolster 20. The angle measuring piece 10 is provided with a measuring shaft 11, the measuring shaft 11 is used for being connected with a rotating shaft 31 of the circuit breaker, and the measuring shaft 11 can synchronously rotate with the rotating shaft 31; the angle measuring part 10 is used to detect the rotation angle of the rotation shaft 31. The fixing bracket 20 is installed on the base 32 of the circuit breaker, and the fixing bracket 20 is used for supporting the angle measuring part 10 to ensure that the angle measuring part 10 has reliable stability.

It should be noted that, the contact of circuit breaker is connected with the pivot 31 of circuit breaker, and when the pivot 31 of circuit breaker rotated, can drive the contact of circuit breaker and remove, so can learn the rotation stroke of pivot 31 through the turned angle measurement to the pivot 31 of circuit breaker, and then obtain the removal stroke of contact.

In the present embodiment, the fixing bracket 20 is mounted on a housing of the angle measuring part 10, the measuring shaft 11 is protruded from the housing to be connected with the rotating shaft 31 of the circuit breaker, and the cable 12 of the angle measuring part 10 is led out from a side opposite to the measuring shaft 11 to facilitate connection of a power source. The fixing bracket 20 is used to support the angle measuring part 10 to ensure good stability when the measuring shaft 11 rotates with the rotating shaft 31 of the circuit breaker. That is, when the angle measuring unit 10 performs the rotation angle measurement of the rotating shaft 31, the housing of the angle measuring unit 10 is stationary and stably mounted to the fixed bracket 20, thereby providing a stable working environment for the measurement structure inside the angle measuring unit 10. The axis of the measuring shaft 11 of the angle measuring device 10 coincides with the axis of the rotating shaft 31, i.e. the measuring shaft 11 runs coaxially with the rotating shaft 31. By the arrangement, the measuring shaft 11 and the rotating shaft 31 can rotate at the same speed, and the accuracy of measured data is improved. When the measuring shaft 11 and the rotating shaft 31 of the circuit breaker rotate synchronously, the rotating angle of the measuring shaft 11 is the same as that of the rotating shaft 31, so that the angle measuring part 10 knows the rotating stroke of the rotating shaft 31 of the circuit breaker, namely the moving stroke of the contact in the circuit breaker through the rotating angle.

Wherein the angle measuring member 10 employs a rotary encoder. The rotary encoder is a speed displacement sensor integrated with the optical motor technology. The rotary encoder comprises a photoelectric code disc, a photoelectric emitter and a photoelectric receiver, wherein the measuring shaft 11 is installed in the center of the photoelectric code disc, and an annular through and dark scribed line is arranged on the photoelectric code disc, so that the photoelectric emitter and the photoelectric receiver can read the signals to obtain four groups of sine wave signals, and each sine wave has a phase difference of 90 degrees. When the measuring shaft 11 rotates synchronously with the rotating shaft 31 of the circuit breaker, the measuring shaft 11 can drive the grating disk to rotate. At this time, the light emitted from the photoelectric emitter can cut the scribe lines on the grating disk into intermittent light, and the intermittent light is received by the receiving element to generate an initial signal. After the signal is processed by a subsequent circuit, a pulse or code signal is output, so that the angular displacement and the rotating position of the rotating shaft 31 of the circuit breaker are measured, the rotating angle and the rotating stroke of the rotating shaft 31 are obtained, and the moving stroke of the contact is obtained.

Compared with the prior art in which a linear resistive sensor is used, the linear resistive sensor needs to convert the displacement change of the rotating shaft 31 into the resistance change during detection, and then the resistance change is converted into the voltage change, so that a measurement result is obtained. This method has a large measurement delay in performing the measurement, and the measurement accuracy is low. In the present embodiment, the rotation angle of the rotating shaft 31 is converted into a linear displacement by the angle measuring unit 10, so that the rotation stroke of the rotating shaft 31 can be obtained. Therefore, the circuit breaker measuring device for the nuclear power station does not need to carry out the conversion in the detection process, and only needs to rotate synchronously along with the rotating shaft 31 through the measuring shaft 11 to obtain the rotating angle of the rotating shaft 31, so that the rotating stroke can be obtained, the detection is convenient, the time delay in the prior art is reduced, and the measuring precision is improved.

Referring to fig. 3, fig. 3 is a partial schematic view illustrating that a connector is connected to a measuring shaft and a rotating shaft in a breaker measuring apparatus for a nuclear power plant according to an embodiment of the present invention. Referring to fig. 1 and 3, in some embodiments, the circuit breaker measuring apparatus for a nuclear power plant further includes a connector 40; one end of the connector 40 is connected to the measuring shaft 11, the other end of the connector 40 is used for connecting the rotating shaft 31 of the circuit breaker, and the rotating shaft 31 can drive the measuring shaft 11 to rotate synchronously through the connector 40. Meanwhile, the connector 40 is provided with a spiral cut 421 that circles around the axis of the connector 40.

Specifically, the connector 40 is used to integrally connect the measuring shaft 11 of the angle measuring unit 10 and the rotating shaft 31 of the circuit breaker, so that the measuring shaft 11 rotates synchronously with the rotating shaft 31, and at the same time, the axis of the measuring shaft 11 is ensured to be the same as the axis of the rotating shaft 31. One end of the connector 40 is fixedly connected with the measuring shaft 11, the other end is fixedly connected with the rotating shaft 31, and the torque of the rotating shaft 31 can be transmitted to the measuring shaft 11 through the connector 40. Meanwhile, the spiral cut 421 surrounding the axis of the connector 40 is provided on the side wall of the connector 40, so that the rigidity of the connector 40 is weakened to some extent, the connector 40 has flexibility, and the problem of breakage between the measuring shaft 11 and the rotating shaft 31 due to high rigidity is reduced.

With continued reference to fig. 3, further, the connector 40 includes a transfer shaft 41 and a flexible sleeve 42; at least one end of the adapter shaft 41 is sleeved with a flexible sleeve 42, the spiral cut is arranged on the flexible sleeve 42, and the spiral cut 421 is communicated with the inner cavity of the flexible sleeve 42. That is, the flexible sleeve 42 has a hollow cylindrical structure with a hollow hole, i.e., an inner cavity. The spiral cut 421 extends spirally around the axis of the flexible sleeve 42, and radially penetrates through the wall of the flexible sleeve 42 along the flexible sleeve 42 to communicate with the hollow hole, so as to ensure that the flexible sleeve 42 has the required flexibility. The transfer shaft 41 is a cylindrical shaft structure to ensure sufficient rigidity of the connector 40 for torque transmission.

The flexible sleeve 42 may be disposed only between the adapting shaft 41 and the measuring shaft 11, that is, one end of the flexible sleeve 42 is fixed to one end of the adapting shaft 41 away from the rotating shaft 31 of the circuit breaker, the other end of the flexible sleeve 42 is fixed to a shaft end of the measuring shaft 11, and one end of the adapting shaft 41 facing the rotating shaft 31 is fixed to the rotating shaft 31. Alternatively, the flexible sleeve 42 may be disposed only between the adapting shaft 41 and the rotating shaft 31 of the circuit breaker, that is, one end of the flexible sleeve 42 is fixed at the shaft end of the rotating shaft 31 of the circuit breaker, the other end of the flexible sleeve 42 is fixed at the end of the adapting shaft 41 facing the rotating shaft 31 of the circuit breaker, and the end of the adapting shaft 41 far away from the rotating shaft 31 is fixed with the measuring shaft 11. Or, both ends of the adapting shaft 41 are provided with the flexible sleeves 42, at this time, the flexible sleeves 42 include a first flexible sleeve and a second flexible sleeve, the first flexible sleeve is used for connecting the adapting shaft 41 and the measuring shaft 11 into an integral structure, and the second flexible sleeve is used for connecting the adapting shaft 41 and the rotating shaft 31 of the circuit breaker into an integral structure. In any arrangement, the measuring shaft 11 can be connected to the rotating shaft 31 so that the measuring shaft 11 rotates synchronously with the rotating shaft 31.

Referring to fig. 3, in the present embodiment, the flexible sleeve 42 is disposed between the adapter shaft 41 and the measuring shaft 11. The connector 40 further includes a first abutting member, one end of the flexible sleeve 42 is provided with a first nesting portion, the first nesting portion is nested on the transfer shaft 41, and the first abutting member penetrates through the first nesting portion and abuts against the transfer shaft 41; the connector 40 further includes a second abutting member, the other end of the flexible sleeve 42 is provided with a second sleeving portion sleeved on the measuring shaft 11, and the second abutting member penetrates through the second sleeving portion and abuts on the measuring shaft 11.

Specifically, a connecting hole is formed in the rotating shaft 31 of the circuit breaker, the connecting hole extends towards one end far away from the measuring shaft 11 along the axis of the rotating shaft 31, and the axis of the connecting hole coincides with the axis of the rotating shaft 31. One end of the transfer shaft 41 far away from the flexible sleeve 42 can be inserted into the connecting hole and fixed with the rotating shaft 31 in a key connection mode. The flexible sleeve 42 includes three sections in sequence along the length direction thereof, which are a first nesting portion, a flexible portion provided with a spiral notch 421, and a second nesting portion. The first sleeving part is used for sleeving the adapter shaft 41, and is provided with a first fastening hole 4221, and the first fastening hole 4221 penetrates through the side wall of the flexible sleeve 42 along the radial direction of the flexible sleeve 42. The first abutting piece can extend into the first fastening hole 4221, the side wall of the first abutting piece is connected with the hole wall of the first fastening hole 4221, and the end part of the first abutting piece extending into the first fastening hole 4221 abuts against the side wall of the transfer shaft 41. The number of the first fastening holes 4221 is multiple, the multiple first fastening holes 4221 are uniformly distributed around the axis of the flexible sleeve 42 at intervals, and a first abutting piece is correspondingly connected in each first fastening hole 4221, so that the flexible sleeve 42 is fixed relative to the connecting shaft 41. Meanwhile, the second sleeve portion is used for being sleeved on the measuring shaft 11, the second sleeve portion is provided with a second fastening hole 4231, and the second fastening hole 4231 penetrates through the side wall of the flexible sleeve 42 along the radial direction of the flexible sleeve 42. The second abutment member can protrude into the second fastening hole 4231, the sidewall of the second abutment member is connected with the hole wall of the second fastening hole 4231, and the end portion of the second abutment member protruding into the second fastening hole 4231 abuts against the sidewall of the measuring shaft 11. The number of the second fastening holes 4231 is multiple, the multiple second fastening holes 4231 are uniformly distributed around the axis of the flexible sleeve 42 at intervals, and a second abutting piece is correspondingly connected in each second fastening hole 4231, so that the flexible sleeve 42 is fixed relative to the measuring shaft 11.

Wherein, the first abutting part and the second abutting part can adopt countersunk head screws.

It should be added that only one end of the flexible sleeve 42 may have the first nesting portion, and the first abutting member passes through the first nesting portion and abuts on the adapter shaft 41. Or only the other end of the flexible sleeve 42 is provided with a second nesting part, and the second abutting piece penetrates through the second nesting part to abut against the measuring shaft 11. Still alternatively, one end of the flexible sleeve 42 is connected with the adapting shaft 41 through a key, and the other end of the flexible sleeve 42 is connected with the measuring shaft 11 through a key. In any case, the flexible sleeve 42 may be fixed to the coupling shaft 41 and the measuring shaft 11.

In addition, when the angle measuring device 10 is measuring, the stability of the fixing bracket 20 also has an influence on the measurement accuracy of the angle measuring device 10, and the higher the stability of the fixing bracket 20 is, the smaller the vibration to which the measuring shaft 11 is subjected when rotating is, and the lower the influence on the measurement is. Meanwhile, the more convenient the installation of the fixing bracket 20, the less time is consumed for measurement. The specific structure of the fixing bracket 20 will be further described below.

Referring to fig. 2, fig. 2 is a schematic partial view illustrating a fixing bracket of a circuit breaker measuring device for a nuclear power plant according to an embodiment of the present invention. Referring to fig. 1 and fig. 2, in the present embodiment, the fixing bracket 20 includes a base 21 and a frame 22; the base 21 is provided with a clamping groove 211, and the clamping groove 211 is used for being clamped on the base 32 of the circuit breaker; one end of the frame body 22 is fixed to the base 21, and the other end of the frame body 22 is fixed to the angle measuring unit 10.

Wherein, the frame body 22 can be detachably connected to the base 21. Taking the placement orientation in fig. 1 as an example, the cross section of the base 21 in the vertical direction is U-shaped, the base 32 of the circuit breaker is inserted into the slot 211, and the upper side wall of the base 21 is provided with a plurality of threaded holes, and the plurality of threaded holes are arranged in a rectangular array. Bolts pass through a plurality of threaded holes to be fixed with the base 32 of the circuit breaker, so that the base 21 is fixedly connected with the base 32 of the circuit breaker. Meanwhile, one end of the holder body 22 is detachably coupled to the upper sidewall of the base 21 by a bolt, and the other end of the holder body 22 is pressed against the housing of the angle measuring unit 10 and fastened by a screw. Through the arrangement, not only can the angle measuring piece 10 be stably fixed, but also the whole structure of the fixing support 20 is simplified, and the installation is convenient.

Of course, it is also possible that the frame body 22 is directly and non-detachably fixed to the base 21, and is formed integrally with the base 21 to support the angle measuring unit 10. Whichever arrangement is adopted, it is only necessary to be able to mount the angle measuring piece 10 with respect to the circuit breaker.

Referring to fig. 1 and 2, in some embodiments, the frame 22 includes a first connecting member 221 for being mounted on the base 21, a second connecting member 222 for being fixedly mounted on the angle measuring unit 10, and a first fastening member; one end of the first connection member 221 is provided with a first adjustment hole 2211, one end of the second connection member 222 is provided with a second adjustment hole 2221, and a first fastener passes through the first and second adjustment holes 2211 and 2221 to clamp the first and second connection members 221 and 222.

Further, the first adjusting holes 2211 are first strip-shaped holes, the second adjusting holes 2221 are second strip-shaped holes, and the first fastening member can move along the length direction of the first adjusting holes 2211 and the length direction of the second adjusting holes 2221.

Specifically, the first connecting member 221 is disposed in an L shape, and the first connecting member 221 has a vertical side portion for connecting the second connecting member 222 and a horizontal side portion for fixing to the base 21. The first adjustment hole 2211 is disposed at the vertical side portion, and the length of the first adjustment hole 2211 extends in the length direction of the vertical side portion. Second adjustment hole 2221 is provided in second coupling member 222, and a length of second adjustment hole 2221 extends along a length direction of second coupling member 222. The second connecting member 222 is connected to the vertical side of the first connecting member 221, and the two are disposed at an included angle. At this time, the first adjusting hole 2211 and the second adjusting hole 2221 are also arranged at an included angle. The first fastener comprises a first bolt and a first nut, the first bolt penetrates through the first adjusting hole 2211 and the second adjusting hole 2221 to be connected with the first nut, the vertical edge part on the first connecting member 221 and the second connecting member 222 are clamped through the first nut and the first nut on the first bolt, and then the detachable connection of the first connecting member 221 and the second connecting member 222 is realized.

Since the first adjusting hole 2211 and the second adjusting hole 2221 are strip-shaped holes, when the first fastening member passes through the first adjusting hole 2211 and the second adjusting hole 2221, the position of the first fastening member relative to the first adjusting hole 2211 and the position of the first fastening member relative to the second adjusting hole 2221 can be adjusted, so as to achieve the connection length of the first connecting member 221 and the connection length of the second connecting member 222.

With reference to fig. 1 and 2, a plurality of first adjusting holes 2211 are further provided, and the plurality of first adjusting holes 2211 are arranged at intervals along the width direction of the vertical side portion of the first connecting member 221. For example, the number of the first adjustment holes 2211 is two, and the number of the first fasteners is also two, and each first fastener passes through the second adjustment hole 2221 and corresponds to one first adjustment hole 2211. Alternatively, the number of the first regulation holes 2211 is three, four, or the like. Meanwhile, only the first adjustment hole 2211 may be a long hole, and the second adjustment hole 2221 may be a circular hole; or the first adjusting hole 2211 is configured as a circular hole, and the second adjusting hole 2221 is configured as a long hole. In any arrangement, the first connecting member 221 and the second connecting member 222 may be stably connected to each other.

Referring to fig. 1 and 2, in some embodiments, the fixing bracket 20 further includes a second fastening member; one end of the first connecting member 221, which is far away from the first connecting member 221, is provided with a third strip-shaped hole 2212, the second fastening member passes through the third strip-shaped hole 2212 and is fixedly arranged on the base 21, and the second fastening member can move along the length direction of the third strip-shaped hole 2212. That is, the lateral side portion of the L-shaped first connecting member 221 is detachably connected to the base 21, the third strip-shaped hole 2212 is provided to the lateral side portion, and the length of the third strip-shaped hole 2212 extends in the length extending direction of the lateral side portion. The second fastener passes through the adjustment hole to clamp the lateral edge of the first connecting member 221 to the base 21. The second fastener may be a screw, and the first connecting member 221 and the base 21 are clamped by a nut on the screw, so as to detachably connect the first connecting member 221 to the base 21.

Referring to fig. 1 and 2, in some embodiments, the fixing bracket 20 further includes a third fastening member; one end of the second connecting member 222 away from the first connecting member 221 has an annular end surface 2222, the annular end surface 2222 is pressed against the end of the angle measuring unit 10, and the third fastening member is fixed to the angle measuring unit 10 through the annular end surface 2222. That is, the second connecting member 222 includes a circular portion and a rectangular portion, and both are integrally formed. The rectangular portion is provided with a second adjustment hole 2221 for detachable connection with the first connection member 221. The annular end surface 2222 is provided on a side of the annular portion facing the angle measuring part 10, and the annular portion is pressed against the end of the angle measuring part 10 from which the measuring shaft 11 extends. The quantity of third fastener is a plurality of, and a plurality of third fasteners are around the axis interval equipartition of ring portion, and the third fastener passes ring portion and sets firmly in the casing of angle measurement spare 10. The circular ring of the second connecting member 222 is not only pressed against the housing of the angle measuring unit 10 by the annular end surface 2222, so as to maintain a sufficient contact area, thereby realizing the fixed connection between the second connecting member 222 and the angle measuring unit 10, but also not causing an obstacle to the rotation of the measuring shaft 11 in the angle measuring unit 10.

In summary, the fixing bracket 20 can not only realize stable fixing of the angle measurement component 10, but also adjust the installation position of the angle measurement component 10 relative to the circuit breaker, so as to be suitable for circuit breakers of different models.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A circuit breaker measuring device for a nuclear power plant, comprising:

the angle measuring piece (10), the angle measuring piece (10) is provided with a measuring shaft (11), the measuring shaft (11) is used for being connected with a rotating shaft (31) of the circuit breaker, and the measuring shaft (11) and the rotating shaft (31) rotate synchronously; the angle measuring part (10) is used for detecting the rotation angle of the rotating shaft (31);

a fixed bracket (20), the fixed bracket (20) is installed on a base (32) of the circuit breaker, and the fixed bracket (20) is used for supporting the angle measuring piece (10).

2. The circuit breaker measuring device for nuclear power plants according to claim 1, characterized in that said fixed support (20) comprises a base (21) and a frame (22);

the base (21) is provided with a clamping groove (211), and the clamping groove (211) is clamped on a base (32) of the circuit breaker;

one end of the frame body (22) is fixed on the base (21), and the other end of the frame body (22) is fixedly arranged on the angle measuring piece (10).

3. The circuit breaker measuring apparatus for nuclear power plant according to claim 2, wherein the rack body (22) includes a first connecting member (221) mounted to the base (21), a second connecting member (222) fixed to the angle measuring part (10), and a first fastening member;

one end of the first connecting member (221) is provided with a first adjusting hole (2211), one end of the second connecting member (222) is provided with a second adjusting hole (2221), and the first fastener passes through the first adjusting hole (2211) and the second adjusting hole (2221) to clamp the first connecting member (221) and the second connecting member (222).

4. The circuit breaker measuring device for nuclear power plant as claimed in claim 3, wherein the first adjusting hole (2211) is a first bar-shaped hole, and the first fastening member is movable in a length direction of the first adjusting hole (2211); and/or the second adjusting hole (2221) is a second strip-shaped hole, and the first fastening piece can move along the length direction of the second adjusting hole (2221).

5. The circuit breaker measuring device for nuclear power plants according to claim 3, characterized in that said fixed support (20) further comprises a second fastener;

one end, far away from the first connecting member (221), of the first connecting member (221) is provided with a third strip-shaped hole (2212), the second fastener passes through the third strip-shaped hole (2212) and is fixedly arranged on the base (21), and the second fastener can move along the length direction of the third strip-shaped hole (2212).

6. The circuit breaker measuring device for nuclear power plants according to claim 3, characterized in that said fixed bracket (20) further comprises a third fastener;

one end, far away from the first connecting member (221), of the second connecting member (222) is provided with an annular end surface (2222), the annular end surface (2222) is pressed on the end portion of the angle measuring piece (10), and the third fastening piece penetrates through the annular end surface (2222) and is fixedly arranged on the angle measuring piece (10).

7. The circuit breaker measuring apparatus for nuclear power plant according to any one of claims 1 to 6, further comprising a connector (40);

one end of the connector (40) is connected to the measuring shaft (11), the other end of the connector (40) is used for connecting the rotating shaft (31), and the rotating shaft (31) can drive the measuring shaft (11) to synchronously rotate through the connector (40);

the connector (40) is provided with a helical cut (421) encircling the axis of the connector (40).

8. The circuit breaker measuring device for nuclear power plants according to claim 7, characterized in that said connector (40) comprises a coupling shaft (41) and a flexible sleeve (42);

at least one pot head of switching axle (41) is equipped with flexible cover (42), spiral cut (421) set up in flexible cover (42), just spiral cut (421) with the inner chamber intercommunication of flexible cover (42).

9. The circuit breaker measuring device for nuclear power plant as recited in claim 8, wherein the connector (40) further comprises a first abutting member, one end of the flexible sleeve (42) is provided with a first nesting portion, the first nesting portion is nested on the transfer shaft (41), and the first abutting member passes through the first nesting portion and abuts against the transfer shaft (41);

and/or the presence of a gas in the gas,

the connector (40) further comprises a second abutting piece, a second sleeving part is arranged at the other end of the flexible sleeve (42), the second sleeving part is sleeved on the measuring shaft (11), and the second abutting piece penetrates through the second sleeving part and abuts against the measuring shaft (11).

10. The circuit breaker measuring device for nuclear power plants according to any one of claims 1, 2, 3, 4, 5, 6, 8 or 9, characterized in that said angular measuring member (10) employs a rotary encoder.

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