阅读说明：本技术 热电偶机械密封螺栓自动拆装工具 (Automatic disassembling tool for thermocouple mechanical seal bolt ) 是由 程书朋 宋水 程鹏 田荣 亓云成 刘中伍 胡建强 陈治宏 于 2021-09-10 设计创作，主要内容包括：本发明涉及一种热电偶机械密封螺栓自动拆装工具,包括环形主体、以及在环形主体上沿周向间隔排布的若干组旋拧组件；旋拧组件包括内角浮动套筒、以及带动内角浮动套筒转动的驱动电机；内角浮动套筒由环形主体的一端向外伸出,以分别套接到热电偶机械密封螺栓上,由驱动电机带动转动,拆除各螺栓。热电偶机械密封螺栓自动拆装工具安装到位后,通过驱动电机的电力驱动可实现一键同步拆装所有螺栓,无需工作人员交替旋拧螺栓,大大减少人员高剂量环境作业时间。同时该工具还具备单个螺栓拆装功能,可模拟人员手动拆装螺栓功能。(The invention relates to an automatic disassembling tool for a thermocouple mechanical seal bolt, which comprises an annular main body and a plurality of groups of screwing assemblies which are arranged on the annular main body at intervals along the circumferential direction; the screwing component comprises an inner angle floating sleeve and a driving motor for driving the inner angle floating sleeve to rotate; the inner angle floating sleeve extends outwards from one end of the annular main body to be respectively sleeved on the thermocouple mechanical sealing bolts, and the inner angle floating sleeve is driven by the driving motor to rotate to detach each bolt. After the automatic dismounting tool for the thermocouple mechanical seal bolt is installed in place, all bolts can be synchronously dismounted by one key through the electric drive of the drive motor, the bolts do not need to be alternately screwed by workers, and the high-dosage environment operation time of the workers is greatly reduced. Meanwhile, the tool also has the function of disassembling and assembling a single bolt, and can simulate the function of manually disassembling and assembling the bolt by personnel.)

1. The automatic disassembling and assembling tool for the thermocouple mechanical seal bolt is characterized by comprising an annular main body (1) and a plurality of groups of screwing assemblies (2) which are circumferentially arranged on the annular main body (1) at intervals;

the screwing component (2) comprises an inner angle floating sleeve (22) and a driving motor (21) for driving the inner angle floating sleeve (22) to rotate;

the inner angle floating sleeve (22) extends outwards from one end of the annular main body (1) to be respectively sleeved on thermocouple mechanical sealing bolts, and is driven by the driving motor (21) to rotate to detach the bolts.

2. Thermocouple mechanical seal bolt automatic assembly and disassembly tool according to claim 1, characterized in that the annular body (1) is formed by two half-rings (11) fastened together.

3. The automatic disassembling and assembling tool for the thermocouple mechanical seal bolt according to claim 2, characterized in that the adjacent side surfaces of the two half rings (11) are respectively provided with a clamping groove (113) and a clamping buckle (114) which are mutually clamped.

4. The automatic dismounting and mounting tool for the thermocouple mechanical seal bolt is characterized in that the cross sections of the clamping groove (113) and the clamping buckle (114) are T-shaped.

5. The automatic disassembling tool for the thermocouple mechanical seal bolt according to any one of claims 2 to 4, wherein the half ring (11) comprises a cylinder (111) with a C-shaped cross section and a flange (112) arranged at the outer ring of one end of the cylinder (111), the driving motor (21) is arranged on the cylinder (112), and the inner angle floating sleeve (22) is arranged on the flange (111).

6. The automatic disassembling tool for the thermocouple mechanical seal bolt is characterized in that six groups of screwing assemblies (2) are arranged on the annular main body (1) at intervals along the circumferential direction.

7. The automatic disassembling and assembling tool for the thermocouple mechanical seal bolt according to claim 1, characterized in that the driving motor (21) is a direct current speed reduction motor.

8. The automatic dismounting and mounting tool for the thermocouple mechanical seal bolt according to claim 7, wherein the maximum torque set by the direct current speed reducing motor for starting screwing is 19.5N.m, and the maximum torque allowed in the process of screwing the bolt after the bolt is loosened is 10 N.m.

9. The tool for automatically dismounting the thermocouple mechanical seal bolt according to any one of claims 1 to 4, 7 and 8, characterized in that an intermediate gear (24) for transmission is arranged between the driving motor (21) and the inner angle floating sleeve (22).

10. The automatic disassembling and assembling tool for the thermocouple mechanical seal bolt is characterized in that a manual adjusting gear rod (23) for adjusting the rotation angle of an inner angle floating sleeve (22) is further arranged beside the driving motor (21).

11. The automatic disassembling tool for the thermocouple mechanical seal bolt is characterized by further comprising a control module for controlling each driving motor (21) so as to start part or all of the driving motors (21).

Technical Field

The invention relates to the field of nuclear power, in particular to an automatic disassembling and assembling tool for a mechanical seal bolt of a thermocouple.

Background

The mechanical seal of the thermocouple is used as a primary circuit pressure boundary and plays an important role in the safe operation of the nuclear power station. During overhaul of the nuclear power plant unit, the mechanical seal of the thermocouple needs to be disassembled and assembled. Due to the narrow working space and the relatively complex process, workers need to work in a high-dosage environment for a long time.

The thermocouple mechanical seal comprises a jackscrew plate, a semi-snap ring, a male flange, a HALF and other parts, and 6 jackscrews at the top part need to be disassembled and assembled when the thermocouple mechanical seal is disassembled and assembled. At present, the dismounting jackscrews of the medium and wide nuclear CPR unit adopt wrenches to alternately tighten and loosen screws, the time consumption is long, and the dose of the personnel is high.

Disclosure of Invention

The invention aims to solve the technical problem of providing an automatic dismounting tool for a thermocouple mechanical seal bolt aiming at the defects in the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: the automatic disassembling and assembling tool for the thermocouple mechanical sealing bolt comprises an annular main body and a plurality of groups of screwing assemblies which are arranged on the annular main body at intervals along the circumferential direction;

the screwing component comprises an inner angle floating sleeve and a driving motor for driving the inner angle floating sleeve to rotate;

the inner angle floating sleeve extends outwards from one end of the annular main body to be respectively sleeved on thermocouple mechanical sealing bolts, and the inner angle floating sleeve is driven by the driving motor to rotate to detach the bolts.

Preferably, the ring-shaped body is formed by two half rings which are buckled together.

Preferably, the adjacent side surfaces of the two semi-rings are respectively provided with a clamping groove and a buckle which are mutually clamped.

Preferably, the cross sections of the clamping groove and the buckle are T-shaped.

Preferably, the half ring comprises a cylinder with a C-shaped cross section and a flange arranged on an outer ring at one end of the cylinder, the driving motor is arranged on the cylinder, and the inner angle floating sleeve is arranged on the flange.

Preferably, six sets of screw assemblies are circumferentially spaced on the annular body.

Preferably, the driving motor is a direct current speed reduction motor.

Preferably, the maximum torque set by the direct current speed reducing motor for starting screwing is 19.5N.m, and the maximum torque allowed in the process of screwing the bolt after the bolt is loosened is 10 N.m.

Preferably, an intermediate gear for transmission is arranged between the driving motor and the inner angle floating sleeve.

Preferably, a manual adjusting gear rod for adjusting the rotation angle of the inner angle floating sleeve is further arranged beside the driving motor.

Preferably, the control module is used for controlling each driving motor so as to start part or all of the driving motors.

The implement of the automatic disassembling tool for the thermocouple mechanical seal bolt has the following beneficial effects: after the automatic dismounting tool for the thermocouple mechanical seal bolt is installed in place, all bolts can be synchronously dismounted by one key through the electric drive of the drive motor, the bolts do not need to be alternately screwed by workers, and the high-dosage environment operation time of the workers is greatly reduced. Meanwhile, the tool also has the function of disassembling and assembling a single bolt, and can simulate the function of manually disassembling and assembling the bolt by personnel.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic perspective view of an automatic tool for mounting and dismounting a mechanical seal bolt of a thermocouple in an embodiment of the invention;

FIG. 2 is a schematic structural diagram of the automatic disassembling and assembling tool for the mechanical seal bolt of the thermocouple in FIG. 1;

FIG. 3 is a schematic sectional view taken along the line A-A of FIG. 2 illustrating an automatic tool for removing a mechanical seal bolt of a thermocouple.

Detailed Description

For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 3, the automatic dismounting tool for a thermocouple mechanical seal bolt in a preferred embodiment of the present invention includes an annular main body 1, and a plurality of sets of screw assemblies 2 arranged on the annular main body 1 at intervals along the circumferential direction.

The screwing component 2 comprises an inner angle floating sleeve 22 and a driving motor 21 for driving the inner angle floating sleeve 22 to rotate, the inner angle floating sleeve 22 extends outwards from one end of the annular main body 1 to be respectively sleeved on thermocouple mechanical sealing bolts, and the driving motor 21 drives the inner angle floating sleeve 22 to rotate to remove all the bolts.

The automatic dismounting tool for the thermocouple mechanical seal bolt can optimize the dismounting process, reduce the collective dosage of personnel, save the time of a key path, and is suitable for the same type of in-service units of Zhongguang nuclear red, Ning, Yang, defense and great Asia Bay.

Preferably, the ring-shaped body 1 is formed by two half rings 11 which are fastened together, and in other embodiments, the ring-shaped body 1 may be formed by splicing more than two arc-shaped pieces. The two half rings 11 are spliced to form a whole and are arranged on a thermocouple mechanical seal jackscrew. The half ring 11 comprises a column 111 with a C-shaped cross section and a flange 112 arranged on the outer ring of one end of the column 111, the driving motor 21 is arranged on the column 112, and the inner angle floating sleeve 22 is arranged on the flange 111.

Furthermore, the adjacent side surfaces of the two half rings 11 are respectively provided with a clamping groove 113 and a buckle 114 which are mutually clamped, and the clamping groove 113 and the buckle 114 are mutually clamped to realize connection and positioning, so that the assembly and disassembly are convenient. In this embodiment, the cross sections of the engaging groove 113 and the engaging buckle 114 are T-shaped.

Furthermore, after the automatic dismounting tool for the thermocouple mechanical seal bolt is installed in place, all bolts can be synchronously dismounted by one key through the electric drive of the drive motor 21, workers do not need to alternately screw the bolts, and the working time of the workers in a high-dosage environment is greatly shortened. Meanwhile, the tool also has the function of disassembling and assembling a single bolt, and can simulate the function of manually disassembling and assembling the bolt by personnel.

In the present embodiment, six sets of screw assemblies 2 are circumferentially spaced on the ring body 1, and six sets of bolts can be simultaneously assembled and disassembled. Furthermore, three screw assemblies 2 are distributed on each half ring 11.

Preferably, the driving motor 21 is a dc speed-reducing motor to avoid an excessive torque. The maximum torque set by the direct-current speed reducing motor for starting screwing the screw is 19.5N.m, and the maximum torque allowed in the process of screwing the bolt after the bolt is loosened is 10N.m, so that the requirement of the dismounting torque of the bolt is met, and the bolt is prevented from being damaged by overlarge torque.

Preferably, an intermediate gear 24 for transmission is provided between the driving motor 21 and the inner angle floating sleeve 22 to realize speed adjustment for screwing the bolt.

A manual adjusting gear rod 23 for adjusting the rotation angle of the inner angle floating sleeve 22 is further arranged beside the driving motor 21, so that the inner angle floating sleeve 22 can be conveniently adjusted in angle to correspond to the angle on the bolt and be clamped on the bolt.

In some embodiments, a control module for controlling each of the driving motors 21 is further included to activate some or all of the driving motors 21.

Preferably, the control module is arranged in the control box, the control box is used as a system control center, and the control unit of the whole system is integrated and comprises a PLC (programmable logic controller), a servo driver, a control screen, an electric quantity display screen and the like, and the control screen is used for switching the dismounting mode and the manual-automatic mode of the mechanical seal bolt of the thermocouple. In addition, the control box is also used for equipment transportation and storage. Meanwhile, a battery is arranged in the control box, the equipment is integrally designed, and all parts are stored in the control box.

Meanwhile, a manual control box is further arranged on the control box, the manual control box is an operation unit of the equipment, and manual and automatic mode switching, single motor selection and other operations can be achieved by matching a control screen of the control box.

The device adopts a modular design, has simple and reliable structure, light weight and convenient and fast disassembly and assembly; the control system is high in integration level, the bolts are synchronously assembled and disassembled through one-key operation, the reloading bolts are automatically stopped when reaching a preset installation torque, and torque protection is arranged in the bolt screwing process, so that the bolts are prevented from being damaged; the motor is adopted to synchronously screw the bolts, so that the working efficiency is high, the time of a key path is saved, and the irradiated dose of workers is reduced.

Description of the embodiments in the field:

a, automatic installation of a thermocouple mechanical seal bolt:

1) after the thermocouple wire jacking plate is installed, the heights of 6 bolts are manually adjusted to be basically consistent;

2) mounting a bolt screwing device on the thermocouple jackscrew;

3) the control box transmits power and selects an automatic installation mode;

4) using a manual control box to confirm that the selection of the motors is T gear, namely all the motors are started simultaneously;

5) pressing a starting button until all the bolts rotate in place, automatically stopping, and loosening the starting button;

6) and pressing a screwing button, taking down the bolt screwing device, and finishing the automatic installation work of the thermocouple mechanical seal bolt.

b, automatic disassembly of a thermocouple mechanical seal bolt:

1) mounting a bolt screwing device on the thermocouple jackscrew;

2) the control box transmits power and selects an automatic disassembly mode;

3) using a manual control box to confirm that the selection of the motors is T gear, namely all the motors are started simultaneously;

4) pressing a starting button, visually observing until all the bolts rotate in place, and loosening the starting button;

5) taking down the screw bolt screwing device, and automatically disassembling the mechanical seal screw bolt of the thermocouple

The device is simple to install, the six motors are adopted to simultaneously screw the bolts, the working efficiency is greatly improved, and the time of a key path is saved; after the device is used, the high-dosage environment operation time of workers is reduced, and the risk of quality problems caused by psychological factors of the workers is reduced; the device can shorten the pit piling operation time of personnel, reduce the irradiated dosage of the personnel and reduce the radiation protection risk.

It is to be understood that the above-described respective technical features may be used in any combination without limitation.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.