Jaw electromagnetic clutch for reactor control rod driving mechanism
阅读说明:本技术 用于反应堆控制棒驱动机构的牙嵌式电磁离合器 (Jaw electromagnetic clutch for reactor control rod driving mechanism ) 是由 彭朝晖 范月容 郭志家 张金山 衣大勇 刘磊 冯嘉敏 赵守智 柯国土 刘天才 姚 于 2019-10-23 设计创作,主要内容包括:本发明提供了一种用于反应堆控制棒驱动机构的牙嵌式电磁离合器,其包括:圆筒形壳体;相对旋转地设置在圆筒形壳体内的主动轴;相对旋转地设置在圆筒形壳体内的从动轴,从动轴与主动轴同轴设置;与主动轴相对固定地设置的极盘;与从动轴在圆周方向上相对固定地设置的衔铁组件;以及用于产生磁场的线圈,该线圈设置在圆筒形壳体的外部。其中,极盘和衔铁组件能够在线圈的作用下传动地接合和分离,在极盘和衔铁组件上分别设置有使两者能够传动地接合的第一齿牙和第二齿牙。由于具有包括齿牙的极盘和衔铁部件,因此在极盘和衔铁部件吸合后,传递的扭转力矩不受水冷却剂的影响,正向和反向的传递精度均得以大大提高。(The invention provides a jaw electromagnetic clutch for a reactor control rod drive mechanism, comprising: a cylindrical housing; a driving shaft relatively rotatably provided in the cylindrical housing; a driven shaft relatively rotatably arranged in the cylindrical shell, the driven shaft and the driving shaft being coaxially arranged; a pole plate fixedly arranged opposite to the driving shaft; an armature assembly disposed circumferentially opposite the driven shaft; and a coil for generating a magnetic field, the coil being disposed outside the cylindrical housing. The pole disc and the armature assembly can be engaged and disengaged in a transmission mode under the action of the coil, and a first tooth and a second tooth which can be engaged in the transmission mode are arranged on the pole disc and the armature assembly respectively. Because the pole plate and the armature part are provided with the teeth, the transmitted torsional moment is not influenced by water coolant after the pole plate and the armature part are attracted, and the forward and reverse transmission precision is greatly improved.)
1. A dog electromagnetic clutch for a reactor control rod drive mechanism, comprising:
a cylindrical housing;
a drive shaft relatively rotatably provided in the cylindrical housing;
a driven shaft relatively rotatably provided in the cylindrical housing, the driven shaft being provided coaxially with the driving shaft;
a pole plate fixedly arranged opposite to the driving shaft;
an armature assembly fixedly disposed circumferentially opposite the driven shaft; and
a coil for generating a magnetic field, the coil being disposed outside the cylindrical housing;
the pole disc and the armature assembly can be engaged and disengaged in a transmission manner under the action of the coil, and a first tooth and a second tooth which can be engaged in the transmission manner are respectively arranged on the pole disc and the armature assembly.
2. The electromagnetic jaw clutch for a reactor control rod drive mechanism of claim 1 wherein a magnetic isolation ring is disposed between the pole disk and the drive shaft.
3. The electromagnetic jaw clutch for a reactor control rod drive mechanism of claim 1 wherein the driving shaft is nested with the driven shaft and a bearing is disposed between the driving shaft and the driven shaft.
4. The electromagnetic jaw clutch for a reactor control rod drive mechanism of claim 1 wherein a first magnetically permeable ring is provided around the cylindrical housing at a location of the cylindrical housing proximate the pole disk.
5. The electromagnetic jaw clutch for a reactor control rod drive mechanism of claim 1 wherein a second magnetically permeable ring is disposed around the cylindrical housing at a location of the cylindrical housing proximate the armature assembly.
6. The dog clutch for a reactor control rod drive mechanism according to claim 4 or 5, wherein the first and second magnetically permeable rings are embedded within a sidewall of the cylindrical housing.
7. The dog clutch for a reactor control rod drive mechanism according to claim 6, wherein the coil overlaps at least a portion of the first magnetically permeable ring and at least a portion of the second magnetically permeable ring in an axial direction of the dog clutch.
8. The electromagnetic jaw clutch for a reactor control rod drive mechanism of claim 1 wherein the armature assembly includes an armature member having a second tooth, an armature support for supporting the armature member, and a reset member for resetting the armature member.
9. The electromagnetic jaw clutch for a reactor control rod drive mechanism of claim 8, wherein the reset member comprises a drive member fixedly disposed on an inner wall of the armature member, a screw fixedly disposed on the armature support and slidably passing through at least a portion of the drive member, and a spring disposed between a cap of the screw and the drive member.
10. The electromagnetic jaw clutch for a reactor control rod driving mechanism according to claim 9, wherein the transmission member is a hollow cylindrical structure in which a U-shaped groove opened toward the hollow portion is provided, and a through hole through which the screw passes is provided on a bottom wall of the U-shaped groove.
Technical Field
The invention relates to the technical field of nuclear reactor engineering, in particular to a clutch for controlling a control rod of a reactor.
Background
In the nuclear reactor engineering art, a clutch is used on a reactor control rod drive mechanism, one side of the clutch is connected to a power take-off shaft for receiving drive power from the drive mechanism, and the other side of the clutch is connected to a portion of the control rod assembly for transmitting motion of the drive mechanism to the control rod assembly. Under the condition that the nuclear reactor normally works, the output shaft of the driving mechanism and the control rod assembly are relatively static, the clutch is attracted, and the output shaft of the driving mechanism rotates to drive the control rod assembly to ascend or descend, so that the reaction speed of the reactor is controlled. In an emergency, the clutch is quickly disengaged, thereby quickly releasing the control rod assemblies, which are quickly inserted into the core of the reactor, thereby achieving an emergency shutdown.
The existing driving mechanism for driving the control rod adopts a friction type electromagnetic clutch, and basically meets the design and use requirements when working in a dry high-temperature gas environment. With the development of reactor engineering technology, the application range of the control rod drive mechanism with the clutch is wider and wider, and the application environment of the clutch is changed accordingly. More and more clutches are required to work in a wet or underwater environment, and the friction coefficient of the friction plate type clutch in the wet or underwater environment is greatly reduced, so that the working requirement of transmitting large torque cannot be met.
Disclosure of Invention
In order to solve at least one of the above technical problems, an embodiment of the present invention provides a dog-type electromagnetic clutch for a reactor control rod drive mechanism, including: a cylindrical housing; a driving shaft relatively rotatably provided in the cylindrical housing; a driven shaft relatively rotatably arranged in the cylindrical shell, the driven shaft and the driving shaft being coaxially arranged; a pole plate fixedly arranged opposite to the driving shaft; an armature assembly disposed circumferentially opposite the driven shaft; and a coil for generating a magnetic field, the coil being disposed outside the cylindrical housing. The pole disc and the armature assembly can be engaged and disengaged in a transmission mode under the action of the coil, and a first tooth and a second tooth which can be engaged in the transmission mode are arranged on the pole disc and the armature assembly respectively.
According to a preferred embodiment of the jaw electromagnetic clutch for a reactor control rod drive mechanism of the present invention, a magnetism isolating ring is provided between a pole disc and a drive shaft.
In another preferred embodiment of the dog type electromagnetic clutch for a reactor control rod drive mechanism according to the present invention, the driving shaft and the driven shaft are nested together, and a bearing is provided between the driving shaft and the driven shaft.
According to still another preferred embodiment of the dog clutch for a reactor control rod drive mechanism according to the present invention, a first magnetic conductive ring surrounding the cylindrical housing is provided at a position of the cylindrical housing near the pole disk.
In yet another preferred embodiment of the dog type electromagnetic clutch for a reactor control rod drive mechanism according to the present invention, a second magnetic conductive ring surrounding the cylindrical housing is provided at a position of the cylindrical housing near the armature assembly.
According to yet another preferred embodiment of the dog clutch for a reactor control rod drive mechanism according to the present invention, the first and second flux rings are embedded in the side wall of the cylindrical housing.
In another preferred embodiment of the dog clutch for a reactor control rod drive mechanism according to the present invention, the coil overlaps at least a portion of the first magnetic conductive ring and at least a portion of the second magnetic conductive ring in an axial direction of the dog clutch.
According to yet another preferred embodiment of the dog electromagnetic clutch for a reactor control rod drive mechanism according to the present invention, the armature assembly includes an armature member having a second tooth, an armature support for supporting the armature member, and a reset member for resetting the armature member.
In yet another preferred embodiment of the dog electromagnetic clutch for a reactor control rod drive mechanism according to the present invention, the reset member includes a transmission member fixedly disposed on an inner wall of the armature member, a screw fixedly disposed on the armature support and slidably passing through at least a portion of the transmission member, and a spring disposed between a cap of the screw and the transmission member.
According to still another preferred embodiment of the dog type electromagnetic clutch for a reactor control rod drive mechanism according to the present invention, the transmission member is of a hollow cylindrical structure, a U-shaped groove opened toward the hollow portion is provided in the cylindrical structure, and a through hole through which a screw passes is provided on a bottom wall of the U-shaped groove.
Compared with the prior art, the invention has at least one of the following beneficial effects:
(1) after the pole disc with the teeth and the armature part with the teeth of the jaw electromagnetic clutch for the reactor control rod driving mechanism are attracted, the transmitted torsional moment is not influenced by water coolant, and the forward and reverse transmission precision is greatly improved.
(2) The driving shaft and the driven shaft are coaxially arranged through the bearing, so that the pole plate and the armature part can also be coaxially arranged on the same rotating axis through the bearing, the coaxiality between the pole plate and the armature part is ensured, and the stability of the attraction force between the pole plate and the armature part is ensured.
(3) The dog-type electromagnetic clutch according to the present invention is provided with the cylindrical case, thereby isolating the water coolant from the coil, and disposing the coil outside the cylindrical case without contact with the coolant, so that it is not necessary to design the coil to be waterproof. Meanwhile, if the jaw-type electromagnetic clutch is integrally placed in a coolant for use, a sealed space formed by the yoke of the coil and the cylindrical housing can achieve a waterproof effect, and the jaw-type electromagnetic clutch is simple in structure and easy to implement.
(4) The side wall of the cylindrical shell is provided with the groove for additionally installing the magnetic conduction ring, so that the magnetic flux passing through the cylindrical shell is increased, the magnetic force lines generated by the externally positioned electrified coil can pass through the cylindrical shell to form a magnetic force line loop, and the attraction force between the pole plate and the armature component is increased.
Drawings
Other objects and advantages of the present invention will become apparent from the following description of the invention which refers to the accompanying drawings, and may assist in a comprehensive understanding of the invention.
Fig. 1 is a sectional view of a dog electromagnetic clutch in a separated state according to an exemplary embodiment of the present invention.
Fig. 2 is a sectional view of the dog electromagnetic clutch in an engaged state according to the example embodiment of the invention.
Fig. 3 is a perspective view of a transmission member of the dog type electromagnetic clutch according to the exemplary embodiment of the present invention.
It is noted that the drawings are not necessarily to scale and are merely illustrative in nature and not intended to obscure the reader.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention. It should be apparent that the described embodiment is one embodiment of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs.
The dog-type
By providing the
In addition, the large torque transmission of the clutch can be realized through the jaw type power transmission structure, and the clutch can adapt to more complex operation environments, for example, the jaw type electromagnetic clutch can work in a humid environment and can also operate in an underwater environment, and can ensure that large torque is transmitted, so that the defects and the defects of the friction type clutch in the humid environment or the underwater environment are avoided.
A
The driving shaft 14 and the driven
Further, in order to enhance the penetration ability of the magnetic field generated by the coil 22 to the
Similarly, the second magnetic
Here, the first magnetic
The coil 22 overlaps at least a portion of the first magnetic
The
Here, the
When the
The coil 22 of the jaw type
The operation of the dog-type
According to the jaw electromagnetic clutch for the reactor control rod driving mechanism, the pole disc comprises the first teeth and the armature part comprises the second teeth, so that after the pole disc and the armature part are attracted, the transmitted torsional moment is not influenced by water coolant, and the forward and reverse transmission precision is greatly improved. Because the driving shaft and the driven shaft are coaxially arranged through the bearing, the pole plate and the armature part can also be coaxially arranged on the same rotating axis through the bearing, thereby ensuring the coaxiality between the pole plate and the armature part and further ensuring the stability of the attraction force between the pole plate and the armature part. In addition, the dog-type electromagnetic clutch according to the present invention is provided with the cylindrical case, thereby isolating the water coolant from the coil, and disposing the coil outside the cylindrical case without contact with the coolant, so that it is not necessary to design the coil to be waterproof. Meanwhile, if the jaw-type electromagnetic clutch is integrally placed in a coolant for use, a sealed space formed by the yoke of the coil and the cylindrical housing can achieve a good waterproof effect, and the jaw-type electromagnetic clutch is simple in structure and easy to implement. The side wall of the cylindrical shell is provided with the groove for additionally installing the magnetic conduction ring, so that the magnetic flux passing through the cylindrical shell is increased, the magnetic force lines generated by the externally positioned electrified coil can pass through the cylindrical shell to form a magnetic force line loop, and the attraction force between the pole plate and the armature component is increased.
It should also be noted that, in the case of the embodiments of the present invention, features of the embodiments and examples may be combined with each other to obtain a new embodiment without conflict.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and the scope of the present invention is subject to the scope of the claims.
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