阅读说明：本技术 磁阻马达型控制棒驱动机构定子的拆卸工具及拆卸方法 (Disassembling tool and disassembling method for stator of reluctance motor type control rod driving mechanism ) 是由 赵占奎 李福春 彭军 李加刚 唐坤林 黄仁忠 赵登山 王宇 张雨果 岳景辉 苏志 于 2020-07-24 设计创作，主要内容包括：本发明公开了磁阻马达型控制棒驱动机构定子的拆卸工具及拆卸方法,解决了现有的磁阻马达型控制棒驱动机构的定子在拆卸过程中存在容易粘咬和卡死的问题,本发明包括定子抱紧装置和至少三个悬臂升降装置,所述悬臂升降装置包括升降柱和悬臂,所述悬臂的一端与所述升降柱连接,所述悬臂的另一端与所述定子抱紧装置连接,所述悬臂上设置有水平测量装置,所述悬臂升降装置上还设置有控制器。本发明具有定子不会与耐压壳部件粘咬、卡死,定子拆卸方便快捷等优点。(The invention discloses a disassembling tool and a disassembling method for a stator of a reluctance motor type control rod driving mechanism, which solve the problem that the stator of the existing reluctance motor type control rod driving mechanism is easy to stick and block in the disassembling process. The invention has the advantages that the stator can not be stuck and blocked with the pressure-resistant shell part, the stator is convenient and fast to disassemble, and the like.)

1. Withdrawal tool of reluctance motor type control rod drive mechanism stator, its characterized in that embraces device and at least three cantilever (10) elevating gear including stator (9), cantilever (10) elevating gear includes lift post and cantilever (10), the one end of cantilever (10) with the lift post is connected, the other end of cantilever (10) with stator (9) are embraced the device and are connected, be provided with leveling device (3) on cantilever (10).

2. A withdrawal tool for a reluctance motor type crdm stator according to claim 1, wherein the stator (9) clasping means comprises a clasping member (8), the clasping member (8) comprises two separable half rings, and the two half rings are detachably connected by a connector (6).

3. A reluctance motor type crdm stator disassembly tool according to claim 2, wherein the clasping means further comprises an ultrasonic vibrator (4).

4. A withdrawal tool for a reluctance motor type crdm stator according to claim 3, wherein the ultrasonic vibrators (4) are plural and evenly distributed around the clasping member (8).

5. A reluctance motor type CRDM stator disassembly tool according to any one of claims 1-4, wherein the cantilever arm (10) lifting device further comprises a controller (2), the controller (2) being mounted on the lifting column.

6. A reluctance motor type CRDM stator disassembly tool according to any one of claims 2-4, wherein the bottom where the clasps (8) contact the stator (9) is provided with a stress plate (7).

7. A withdrawal tool for a reluctance motor type CRDM stator according to claim 6, wherein the force-bearing plate (7) is provided with copper shims (5).

8. A reluctance motor type CRDM stator disassembly tool according to any one of claims 1 to 4, wherein the cantilever arm (10) has a length of 150 mm.

9. A method of disassembling a stator of a reluctance motor type control rod drive mechanism using the disassembling tool according to any one of claims 3 to 8, comprising the steps of:

step 1: placing a disassembling tool on a top cover (12) of the pressure container, and opening a connector (6) to enable a holding piece (8) to enclose a stator (9);

step 2: then the connector (6) is locked, so that the holding piece (8) holds the stator (9);

and step 3: adjusting a cantilever (10) lifting device to enable the horizontal measuring device (3) to reach a set value;

and 4, step 4: opening the ultrasonic vibrator (4) to remove the sticking between the stator (9) and the pressure shell part (11);

and 5: the cantilever (10) lifting device is opened to take the stator (9) out of the pressure housing part (11).

10. A method of dismounting a reluctance motor type crdm stator according to claim 9, wherein the clasping member (8) lifts the lifting columns after enclosing the stator (9) so that the stress plate (7) at the bottom of the clasping member (8) is in contact with the stator (9).

Technical Field

The invention relates to the technical field of special equipment for repairing a control rod driving mechanism in nuclear engineering, in particular to a disassembling tool and a disassembling method for a reluctance motor type control rod driving mechanism stator.

Background

In a reactor engineering project, due to long-term operation of a reactor, the control rod driving mechanism is aged and other factors can cause the control rod driving mechanism to be failed, disassembly and maintenance of the control rod driving mechanism are required, and the disassembly process comprises the disassembly of a stator component.

The disassembly work of the stator has the following difficulties:

1) the stator and the pressure-resistant shell are in clearance fit with small intervals, so that the stator and the pressure-resistant shell are very easy to stick and bite in the stator dismounting process;

2) sundries are easy to fall into a gap between the stator and the pressure-resistant shell, so that the stator is blocked;

3) the stator dismounting working environment is severe, and is a radioactive place, so that health threats exist to operators;

4) the stator is dismantled the work place narrowly, and other appurtenance can't be executed and expanded.

In order to meet the maintenance requirement of the control rod driving mechanism, a special tool suitable for disassembling a reluctance motor type control rod driving mechanism stator is needed to be designed.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the stator of the existing reluctance motor type control rod driving mechanism is easy to be stuck and seized in the process of disassembly.

The invention is realized by the following technical scheme:

withdrawal tool of reluctance motor type control rod drive mechanism stator, embrace device and at least three cantilever elevating gear including the stator, cantilever elevating gear includes lift post and cantilever, the one end of cantilever with the lift leg joint, the other end of cantilever with the stator is embraced tightly the device and is connected, be provided with level measurement device on the cantilever.

The design principle of the invention is as follows: the stator is tightly held through the holding device, thereby the stator is lifted off from the pressure-resistant shell component through a plurality of cantilever lifting devices, and the levelness of the stator can be measured by the level measuring device arranged on the cantilever, and the leveling is carried out through the cantilever lifting devices, so that the level detection data size is ensured within a set range, thereby the stator can be ensured to move upwards along the pressure-resistant shell component all the time, and the clamping and biting caused by the deviation are prevented.

The stator holding device comprises a holding piece, the holding piece comprises two detachable half ring pieces, and the two half ring pieces are detachably connected through a connector.

The two half ring pieces are arranged, so that the stator can be conveniently enclosed, and the stator can be conveniently held tightly by regulation and control through the detachable connecting piece.

The invention discloses a disassembling tool for a stator of a reluctance motor type control rod driving mechanism, wherein the holding device also comprises an ultrasonic vibrator.

The stator and the pressure-resistant shell are in clearance fit with small intervals, the stator and the pressure-resistant shell are very easy to stick and bite in the stator dismounting process, and sundries are easy to fall into the clearance between the stator and the pressure-resistant shell to cause the stator to be stuck in the long-term operation process of the control rod driving mechanism, so that the stator is vibrated by the control of levelness and the ultrasonic vibrator, the sticking and sticking states of the stator are favorably relieved, and the stator is convenient to smoothly dismount.

According to the disassembling tool for the stator of the control rod driving mechanism in the preferred reluctance motor type, the ultrasonic vibrators are multiple and are uniformly distributed around the holding piece.

In order to improve the vibration effect of the ultrasonic vibrators, a plurality of ultrasonic vibrators are arranged, and in order to enable the stator to receive ultrasonic waves in all directions, the ultrasonic vibrators are uniformly distributed on the holding piece.

Further, cantilever elevating gear is 4, is 90 evenly distributed along enclasping device circumference, and 4 cantilever elevating gear make whole structure firm, the supersound oscillator install in the one side that enclasping piece and cantilever are connected, and the supersound oscillator that every side set up is 3 at least, from the top to the bottom intermittent type evenly distributed of enclasping piece, after being enclasping piece is located to the stator, the supersound oscillator distribute in the upper portion, middle part and the lower part of stator can guarantee like this that each position homoenergetic of stator can receive stronger ultrasonic wave, improve and relieve the ability that stator and withstand voltage shell part glue and sting, and the supersound oscillator is installed and is favorable to arranging the electric wire on one side of the cantilever.

In the preferred withdrawal tool for the stator of the reluctance motor type crdm of the present invention, the cantilever lifting device further comprises a controller mounted on the lifting column.

Further, the controller is a torque and level controller.

The invention discloses a disassembling tool for a stator of a reluctance motor type control rod driving mechanism, wherein a stress plate is arranged at the bottom of the clamping piece, which is in contact with the stator.

According to the tool for disassembling the stator of the control rod driving mechanism in the preferred reluctance motor type, the stress plate is provided with the copper gasket.

The torque and level controller arranged in the invention controls the cantilever lifting device to ensure the magnitude of the stress torque of the stress plate with the copper gasket and the magnitude of the numerical value of the level measuring device, and the copper gasket is arranged on the stress plate, so that the stator is protected due to the fact that copper metal is soft.

Further, the cantilever lifting device is a hydraulic lifting device.

The controller can control the hydraulic lifting device to control the torque of the horizontal measuring device and the force bearing plate, the levelness of the stator is realized, the stator is smoothly dismounted, the controller can realize the work of an automatic control tool, the time of personnel on-site operation is reduced, and the damage of nuclear radiation to the body is reduced.

According to the tool for disassembling the stator of the optimized reluctance motor type control rod driving mechanism, the length of the cantilever is 150mm, and as the pressure vessel top cover is provided with the plurality of control rod arrays, the intervals among the arrays are small, and the operation space for disassembling the stator is narrow, the length of the set cantilever needs to be reasonably arranged according to the space on site, and the 150mm set by the tool can ensure that the stator can be smoothly disassembled.

The method for disassembling the stator of the reluctance motor type control rod driving mechanism comprises the following steps:

step 1: placing a disassembling tool on a top cover of the pressure container, and opening the connecting head to enable the holding piece to enclose the stator;

step 2: then the connector is locked, so that the holding piece holds the stator tightly;

and step 3: adjusting the cantilever lifting device to enable the horizontal measuring device to reach a set value;

and 4, step 4: opening the ultrasonic vibrator to remove the sticking between the stator and the pressure-resistant shell part;

and 5: and opening the cantilever lifting device to take the stator out of the pressure shell part.

According to the method for disassembling the stator of the reluctance motor type control rod driving mechanism, the holding piece is used for lifting the lifting column after enclosing the stator, so that the stress plate at the bottom of the holding piece is in contact with the stator, and the moment of the stress plate is adjusted to be in accordance with a set value through the cantilever lifting device.

The invention has the following advantages and beneficial effects:

1. the detachable connector can be used for disassembling and assembling the disassembling tool and tightly holding the stator component of the control rod driving mechanism; the hydraulic lifting device is controlled by a torque and horizontal controller to ensure the magnitude of the stress torque of the stress plate with the copper gasket and the magnitude of the numerical value of the horizontal measuring device; the horizontal measuring device and the ultrasonic vibrator ensure that the stator and the pressure-resistant shell part cannot be stuck and blocked.

2. The tool disclosed by the invention is simple in structure, convenient to machine, manufacture and maintain, and capable of realizing quick disassembly of the stator and effectively protecting the stator in the disassembly process.

3. The stress plate is provided with the copper gasket, and the stator is protected by utilizing the characteristic of a copper soft material.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a schematic side view of the present invention.

Fig. 2 is a schematic top view of the present invention.

Fig. 3 is a schematic structural diagram of the present invention in a working state.

Reference numbers and corresponding part names in the drawings:

1-cantilever lifting device, 2-controller, 3-level measuring device, 4-ultrasonic vibrator, 5-copper gasket, 6-connector, 7-stress plate, 8-holding piece, 9-stator, 10-cantilever, 11-pressure-resistant shell part and 12-pressure container top cover.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.