阅读说明：本技术 一种核反应堆控制棒组件的夹紧装置 (Clamping device of nuclear reactor control rod assembly ) 是由 姜淑忠 于 2020-12-30 设计创作，主要内容包括：本发明公开了一种核反应堆控制棒组件的夹紧装置,具有控制棒组件、驱动机构以及由驱动机构驱动打开或闭合的夹紧机构；其特征在于：所述夹紧机构包括用于径向夹紧或松开控制棒组件的夹爪、开设有导向孔且用于在径向上对夹爪进行导向的导向板以及布置在导向板上方且通过辅助件与导向孔中的夹爪上端铰接的基座；所述基座的下端经连接端口与辅助件铰接。针对以上现有技术存在的缺陷,本发明的主要目的在于克服现有技术的不足之处,公开了一种有利于控制棒组件安全、平稳地放置到核反应堆反应器皿中的控制棒组件夹紧装置。(The invention discloses a clamping device of a nuclear reactor control rod assembly, which comprises a control rod assembly, a driving mechanism and a clamping mechanism driven by the driving mechanism to open or close; the method is characterized in that: the clamping mechanism comprises a clamping jaw for radially clamping or loosening the control rod assembly, a guide plate which is provided with a guide hole and used for guiding the clamping jaw in the radial direction, and a base which is arranged above the guide plate and hinged with the upper end of the clamping jaw in the guide hole through an auxiliary piece; the lower end of the base is hinged with the auxiliary piece through the connecting port. In view of the above-mentioned drawbacks of the prior art, the present invention is directed to overcome the disadvantages of the prior art, and discloses a control rod assembly clamping device which facilitates safe and stable placement of a control rod assembly in a reactor vessel of a nuclear reactor.)

1. A clamping device for a control rod assembly of a nuclear reactor, having a control rod assembly (00), a drive mechanism (10) and a clamping mechanism (20) driven to open or close by the drive mechanism (10); the method is characterized in that: the clamping mechanism (20) comprises a clamping jaw (30) used for radially clamping or loosening the control rod assembly (00), a guide plate (40) provided with a guide hole (41) and used for guiding the clamping jaw (30) in the radial direction, and a base (50) which is arranged above the guide plate (40) and is hinged with the upper end of the clamping jaw (30) in the guide hole (41) through an auxiliary piece (60); the lower end of the base (50) is hinged with an auxiliary piece (60) through a connecting port (51).

2. A nuclear reactor control rod assembly clamping device as claimed in claim 1, wherein: the clamping jaw (30) comprises two or four fan-shaped movable plates (31), a fixing bolt (32) arranged on the upper end face of each fan-shaped movable plate (31) and a clamping plate (33) arranged on the inner edge below the fan-shaped movable plates (31); the inner wall of the clamping plate (33) extends towards the axial center direction to form a supporting platform (34); a rubber layer (35) is attached to the inner wall surface of the support platform (34); the upper end of the fixing bolt (32) is hinged with an auxiliary piece (60); the lower end of the fixed bolt (32) is in threaded connection with the sector movable plate (31).

3. A nuclear reactor control rod assembly clamping device as claimed in claim 2, in which: the clamping plate (33) and the sector movable plate (31) are integrally formed.

4. A nuclear reactor control rod assembly clamping device as claimed in claim 2, in which: and anti-slip strips (351) are transversely and uniformly arranged on the surface of the rubber layer (35).

5. A nuclear reactor control rod assembly clamping device as claimed in claim 1, wherein: the guide plate (40) is cross-shaped; the guide holes (41) are distributed on each branch of the cross-shaped guide plate (40).

6. A nuclear reactor control rod assembly clamping device as claimed in any one of claims 1 to 5, in which: the driving mechanism (10) is a motor; the motor is fixedly connected with the base (50); an output shaft of the motor penetrates through the guide plate (40) and is in threaded connection with the guide plate (40).

7. A nuclear reactor control rod assembly clamping device as claimed in any one of claims 1 to 5, in which: the driving mechanism (10) is a cylinder; the cylinder is fixedly connected with the base (50); the tail end of the output shaft of the air cylinder is in threaded locking connection with the guide plate (40).

Technical Field

The invention relates to the field of nuclear power control rod accessories, in particular to a clamping device of a nuclear reactor control rod assembly.

Background

The control rod assembly is a nuclear reactor reactivity control component, the control rod assemblies used in the current nuclear power station are all made of materials with strong neutron absorption capacity, and the nuclear fission rate is controlled by utilizing the position of the control rod assemblies inserted into a reactor core. Under normal operating conditions, they are used to start up nuclear reactors, regulate reactor power and shut down; under the accident condition, the control rod is quickly inserted downwards by means of the gravity of the control rod, so that the nuclear reactor is emergently stopped in a very short time to ensure the safety of the nuclear reactor. How to better place the control rod assemblies safely and smoothly into the nuclear reactor vessel is a constantly sought after problem for various teams. It is therefore desirable to design a control rod assembly clamping apparatus that facilitates safe and smooth placement of the control rod assembly into a nuclear reactor vessel.

Disclosure of Invention

Aiming at overcoming the defects of the prior art, the invention mainly aims to overcome the defects of the prior art and discloses a clamping device of a nuclear reactor control rod assembly, which is provided with the control rod assembly, a driving mechanism and a clamping mechanism driven by the driving mechanism to open or close; the method is characterized in that: the clamping mechanism comprises a clamping jaw for radially clamping or loosening the control rod assembly, a guide plate which is provided with a guide hole and used for guiding the clamping jaw in the radial direction, and a base which is arranged above the guide plate and hinged with the upper end of the clamping jaw in the guide hole through an auxiliary piece; the lower end of the base is hinged with the auxiliary piece through the connecting port.

Further, the clamping jaw comprises two or four fan-shaped movable plates, a fixing bolt arranged on the upper end face of each fan-shaped movable plate and a clamping plate arranged on the inner edge below each fan-shaped movable plate; the inner wall of the clamping plate extends towards the axis direction to form a supporting platform; a rubber layer is attached to the inner wall surface of the support platform; the upper end of the fixing bolt is hinged with the auxiliary piece; the lower end of the fixing bolt is in threaded connection with the sector movable plate.

Further, the clamping plate and the sector movable plate are integrally formed.

Furthermore, anti-slip strips are transversely and uniformly arranged on the surface of the rubber layer.

Furthermore, the guide plate is cross-shaped; the guide holes are distributed on each branch of the cross-shaped guide plate.

Further, the driving mechanism is a motor; the motor is fixedly connected with the base; and an output shaft of the motor penetrates through the guide plate and is in threaded connection with the guide plate.

Further, the driving mechanism is a cylinder; the cylinder is fixedly connected with the base; and the tail end of an output shaft of the air cylinder is in threaded locking connection with the guide plate.

The invention has the beneficial effects that: the control rod assembly is clamped by a radial clamping method, the support table on the clamping plate plays a supporting role in the longitudinal direction of the control rod assembly, the inner wall of the clamping plate clamps and transports the control rod assembly in the radial direction, the clamping plate has a certain length in the longitudinal direction, the clamping plate also has a guiding role in the longitudinal direction of the control rod assembly, the rubber layer can prevent mechanical damage, and the anti-slip strip strengthens the anti-slip function, so that the whole transportation process is more stable.

Drawings

FIG. 1 is an overall perspective view of the present invention;

FIG. 2 is a partial perspective view of a jaw of the present invention;

FIG. 3 is a schematic view of the clamping control rod assembly of the present invention.

The reference numbers are as follows: the control rod assembly 00, a head 01, a driving mechanism 10, a clamping mechanism 20, a clamping jaw 30, a sector movable plate 31, a fixed bolt 32, a clamping plate 33, a supporting platform 34, a rubber layer 35, an anti-slip strip 351, a guide plate 40, a guide hole 41, a base 50 and an auxiliary piece 60.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The invention has a control rod assembly 00, a driving mechanism 10 and a clamping mechanism 20 driven by the driving mechanism 10 to open or close; the clamping mechanism 20 comprises a clamping jaw 30 for radially clamping or loosening the control rod assembly 00, a guide plate 40 which is provided with a guide hole 41 and is used for guiding the clamping jaw 30 in the radial direction, and a base 50 which is arranged above the guide plate 40 and is hinged with the upper end of the clamping jaw 30 in the guide hole 41 through an auxiliary piece 60; the lower end of the base 50 is hinged with the auxiliary 60 through the connection port 51.

More specifically in the present embodiment, the clamping jaw 30 includes two or four sector-shaped movable plates 31, a fixing bolt 32 mounted on an upper end surface of the sector-shaped movable plate 31, and a clamping plate 33 arranged at a lower inner edge of the sector-shaped movable plate 31; a support base 34 is formed by extending the inner wall of the clamping plate 33 in the axial direction; a rubber layer 35 is adhered to the inner wall surface of the support platform 34, and the rubber layer 35 can prevent the control rod assembly 00 and the clamping plate 33 from forming mechanical friction damage or clamping marks; the upper end of the fixing bolt 32 is hinged with the auxiliary piece 60; the lower end of the fixing bolt 32 passes through the guide hole 41 and is in threaded connection with the sector movable plate 31; during operation, the clamping jaw 30 is opened and placed on the periphery of the control rod assembly 00, the driving mechanism 10 acts, the sector movable plate 31 is driven, the sector movable plate 31 drives the clamping plate 33 integrally formed with the sector movable plate 31 to move towards the axis direction, the lower end face of the head 01 of the control rod assembly 00 is contacted with the upper end face of the support table 34, the clamping plate 33 continues to move until the rubber layer 35 is tightly attached to the surface of the control rod assembly 00, and the clamping jaw 30 clamps the control rod assembly 00 and then moves the clamping device to a proper position; the drive mechanism 10 acts in the opposite direction to release the control rod assembly 00 and operation is complete.

More specifically, in the embodiment, when there are two sector-shaped movable plates 31, the two sector-shaped movable plates 31 are disposed opposite to each other, that is, two ends of the control rod assembly 00 are clamped; when the number of the sector movable plates 31 is four, the four sector movable plates 31 enclose a square.

More specifically, in the present embodiment, the clamping plate 32 is integrally formed with the sector movable plate 31.

More specifically, in this embodiment, the anti-slip strips 351 are transversely and uniformly arranged on the surface of the rubber layer 35, and the transversely arranged anti-slip strips 351 are perpendicular to the gravity direction of the control rod assembly 00, so that the anti-slip effect can be further enhanced while the outer surface of the control rod assembly 00 is prevented from being mechanically damaged.

More specifically in the present embodiment, the guide plate 40 is cross-shaped; a guide hole 41 is distributed on each branch of the cross-shaped guide plate 40, wherein the guide hole 41 is a kidney-shaped hole.

More specifically in this embodiment, the drive mechanism 10 is a motor; the motor is fixedly connected with the base 50 through bolt locking; the output shaft of the motor penetrates the guide plate 40 and is in threaded connection with the guide plate 40. When the motor rotates forwards, the guide plate 40 is far away from the base 50, and the clamping jaw 30 approaches to the axis to clamp the control rod assembly 00; when the motor rotates reversely, the guide plate 40 approaches the base 50, and the clamping jaw 30 moves away from the axis direction, so that the control rod assembly 00 is loosened.

More specifically in the present embodiment, the drive mechanism 10 is a cylinder; the cylinder is fixedly connected with the base 50 through bolt locking; the tail end of the output shaft of the air cylinder is in threaded locking connection with the guide plate 40. When the output shaft of the cylinder extends outwards, the guide plate 40 is far away from the base 50, and the clamping jaw 30 approaches to the axis to clamp the control rod assembly 00; when the output shaft of the cylinder returns inwards, the guide plate 40 approaches the base 50, and the clamping jaw 30 moves away from the axis, so that the control rod assembly 00 is loosened.

The above are merely preferred embodiments of the present invention, and are not intended to limit the scope of the invention; it is intended that the following claims be interpreted as including all such alterations, modifications, and equivalents as fall within the true spirit and scope of the invention.