阅读说明：本技术 一种核反应堆控制棒驱动器 (Nuclear reactor control rod driver ) 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驱动器,具有驱动装置、导向装置以及牵引绳；所述牵引绳的前端由驱动装置驱动；所述牵引绳的后端与控制棒连接；所述导向装置安装在驱动装置与控制棒中间；所述导向装置包括两个支架、架设在两个支架之间的两根导向辊以及与导向辊滚动接触的滚轮组；所述牵引绳的前端贯穿前端的支架与驱动装置连接；所述牵引绳的后端贯穿后端的支架与控制棒连接；后端所述支架与控制棒之间还加装有导向轮；所述牵引绳的中间节点处与滚轮组连接。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,公开了一种能够平稳和可靠的控制棒驱动器。(The invention discloses a nuclear reactor control rod driver, which is provided with a driving device, a guiding device and a traction rope; the front end of the traction rope is driven by a driving device; the rear end of the traction rope is connected with the control rod; the guide device is arranged between the driving device and the control rod; the guide device comprises two brackets, two guide rollers erected between the two brackets and a roller group in rolling contact with the guide rollers; the front end of the traction rope penetrates through the bracket at the front end and is connected with the driving device; the rear end of the traction rope penetrates through the bracket at the rear end and is connected with the control rod; a guide wheel is additionally arranged between the support and the control rod at the rear end; the middle node of the hauling rope is connected with the roller group. In view of the above-mentioned deficiencies in the prior art, the primary object of the present invention is to overcome the deficiencies in the prior art and to disclose a control rod driver that is capable of being smooth and reliable.)

1. A nuclear reactor control rod drive having a drive (10), a guide (20), and a pull-cord (30); the front end of the traction rope (30) is driven by a driving device (10); the rear end of the traction rope (30) is connected with a control rod (40); the guide device (40) is arranged between the driving device (10) and the control rod (40); the method is characterized in that: the guide device (20) comprises two brackets (21), two guide rollers (22) erected between the two brackets (21) and a roller group (23) in rolling contact with the guide rollers (22); the front end of the traction rope (30) penetrates through the bracket (21) at the front end and is connected with the driving device (10); the rear end of the traction rope (30) penetrates through a bracket (21) at the rear end and is connected with a control rod (40); a guide wheel (50) is additionally arranged between the bracket (21) and the control rod (40) at the rear end; the middle node of the traction rope (30) is connected with the roller group (23).

2. A nuclear reactor control rod drive as set forth in claim 1, wherein: the roller group (23) comprises a pair of upper roller groups (231), two pairs of lower roller groups (232) and a roller bracket (233); the upper roller group (231) is arranged at the upper end of the roller bracket (233) and is in rolling contact with the upper end surface of the guide roller (22); the lower roller group (232) is arranged at the lower end of the roller bracket (233) and is in rolling contact with the lower end surface of the guide roller (22); the traction rope (30) penetrates through the roller bracket (233) and is fixedly connected with the roller bracket (233).

3. A nuclear reactor control rod drive as set forth in claim 2, wherein: the roller bracket (233) is of an inverted T shape; the upper roller group (231) is arranged at the upper end of the roller bracket (233) through a first screw (236); the lower roller group (232) is arranged at the lower end of the roller bracket (233) through a second screw rod (237).

4. A nuclear reactor control rod drive as set forth in claim 2, wherein: the roller bracket (233) includes an inverted T-shaped main body (233 a); a platform (233b) is arranged at the middle section of the inverted T-shaped main body (233a) in the vertical direction; a spring (233c) is sleeved on the inverted T-shaped main body (233a) above the platform (233 b); an auxiliary piece (233d) is sleeved on the inverted T-shaped main body (233a) above the spring (233 c); the upper roller groups (231) are arranged at two sides of the auxiliary component (233 d); an adjusting nut (233e) is screwed on the inverted T-shaped main body (233a) above the auxiliary piece (233 d); the lower roller group (232) is arranged at the lower end of the roller bracket (233) through a second screw rod (237).

5. A nuclear reactor control rod drive as claimed in any one of claims 1 to 4, wherein: the driving device (10) comprises a motor (11) arranged on one side of the traction rope (30) and a containing turntable (12) fixedly connected with an output shaft of the motor (11).

Technical Field

The invention relates to the field of control of nuclear reactor control rods, in particular to a nuclear reactor control rod driver.

Background

A nuclear reactor is a device capable of continuously performing a controlled nuclear fission chain reaction. By varying the number of neutrons in the reactor, the severity of the nuclear reaction and thus the reactor power can be varied. The control rods are made of a material that strongly absorbs neutrons. It is disposed within the core and interspersed among the fuel assemblies. The absorption quantity and speed of the control rod to neutrons can be changed by lifting and inserting the control rod, and the reactor reaction speed is further effectively controlled. In a word, the control rod driving mechanism of the nuclear reactor is an actuating mechanism of a control system and a protection system of the nuclear reactor, and realizes accurate lifting, downward insertion, holding and rapid rod falling of control rods through the actuating mechanism, so that the starting, power regulation, power maintenance, normal shutdown and emergency shutdown of the reactor are completed; the stability and reliability of the reactor directly influence the accurate matching of the output power of the reactor and the safe operation. It is therefore desirable to design a control rod drive that is smooth and reliable.

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 nuclear reactor control rod driver, which is provided with a driving device, a guiding device and a traction rope; the front end of the traction rope is driven by a driving device; the rear end of the traction rope is connected with the control rod; the guide device is arranged between the driving device and the control rod; the guide device comprises two brackets, two guide rollers erected between the two brackets and a roller group in rolling contact with the guide rollers; the front end of the traction rope penetrates through the bracket at the front end and is connected with the driving device; the rear end of the traction rope penetrates through the bracket at the rear end and is connected with the control rod; a guide wheel is additionally arranged between the support and the control rod at the rear end; the middle node of the hauling rope is connected with the roller group.

Further, the roller group comprises a pair of upper roller groups, two pairs of lower roller groups and a roller bracket; the upper roller group is arranged at the upper end of the roller bracket and is in rolling contact with the upper end surface of the guide roller; the lower roller group is arranged at the lower end of the roller bracket and is in rolling contact with the lower end surface of the guide roller; the haulage rope runs through the gyro wheel support and with gyro wheel support fixed connection.

Further, the roller bracket is of an inverted T shape; the upper roller group is arranged at the upper end of the roller bracket through a first screw rod; the lower roller group is arranged at the lower end of the roller bracket through a second screw rod.

Further, the roller bracket comprises an inverted T-shaped main body; a platform is arranged at the middle section of the inverted T-shaped main body in the vertical direction; a spring is sleeved on the inverted T-shaped main body above the platform; an auxiliary piece is sleeved on the inverted T-shaped main body above the spring; the upper roller groups are arranged on two sides of the auxiliary part; an adjusting nut is screwed on the inverted T-shaped main body above the auxiliary piece; the lower roller group is arranged at the lower end of the roller bracket through a second screw rod.

Further, drive arrangement is including installing the motor and the carousel of accomodating with motor output shaft fixed connection in haulage rope one side.

The beneficial effects of the technical scheme are as follows: the traction rope is guided by the plurality of groups of rollers, the traction rope can be more stable in the action process, and the roller groups are in rolling contact with the guide rollers, so that friction is reduced; and finally, the upper roller group can be connected through two roller supports, so that the structure is simple, the operation is convenient, and the installation is convenient.

Drawings

FIG. 1 is a schematic diagram of a driver according to the present invention;

FIG. 2 is a schematic view of a control rod sinking configuration of the present invention;

FIG. 3 is a schematic diagram of a control rod lifting structure according to the present invention;

FIG. 4 is a front view of a roller holder according to embodiment 1 of the present invention;

FIG. 5 is a right side view of a roller bracket according to embodiment 1 of the present invention;

FIG. 6 is a front view of a roller holder according to embodiment 2 of the present invention;

FIG. 7 is a schematic view showing a roller holder in a dispersed state according to embodiment 2 of the present invention;

fig. 8 is a right side view of the roller bracket according to embodiment 2 of the present invention.

The reference numbers are as follows: the device comprises a driving device 10, a motor 11, a containing turntable 12, a guiding device 20, a bracket 21, a guiding roller 22, a roller group 23, an upper roller group 231, a roller group 232, a roller bracket 233, an upper through hole 234, a lower through hole 235, a first screw 236, a second screw 237, an inverted T-shaped main body 233a, a platform 233b, springs 233c and 233d, an adjusting nut 233e, a traction rope 30, a guiding device 40 and a guiding wheel 50.

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.

Referring to fig. 1 to 3, a nuclear reactor control rod driver has a driving device 10, a guide device 20, and a traction rope 30; the front end of the traction rope 30 is driven by the driving device 10; the rear end of the hauling cable 30 is connected with the control rod 40, and the connection mode of the rear end of the hauling cable 30 and the control rod 40 can adopt a connection structure in the prior art, which is not described in detail herein; the guide device 40 is arranged between the driving device 10 and the control rod 40; the guide device 20 comprises two brackets 21, two guide rollers 22 arranged between the two brackets 21 and a roller group 23 in rolling contact with the guide rollers 22; the front end of the traction rope 30 penetrates through the bracket 21 at the front end and is connected with the driving device 10; the rear end of the traction rope 30 penetrates through the bracket 21 at the rear end and is connected with the control rod 40; a guide wheel 50 is additionally arranged between the rear end bracket 21 and the control rod 40; the middle node of the hauling cable 30 is connected with the roller group 23.

Referring to fig. 4 and 5, in the present embodiment, more specifically, the roller group 23 includes a pair of upper roller groups 231, two pairs of lower roller groups 232, and a roller bracket 233; the upper roller group 231 is installed at the upper end of the roller bracket 233 and is in rolling contact with the upper end surface of the guide roller 22; the lower roller group 232 is installed at the lower end of the roller bracket 233 and is in rolling contact with the lower end surface of the guide roller 22; the traction rope 30 penetrates the roller bracket 233 and is fixedly connected with the roller bracket 233. The upper pair of rollers 231 and the lower pair of rollers 232 make the guide structure more stable, thereby further enhancing the smoothness of the traction rope 30 in pulling the control rod 40.

Referring to fig. 6 to 8, in another embodiment, the roller bracket 233 is of an inverted T shape; the upper roller group 231 is mounted at the upper end of the roller bracket 233 by a first screw 236; the upper end of the inverted T-shaped roller bracket 233 is provided with an upper through hole 234, and a first screw 236 sequentially penetrates through the left roller, the upper through hole 234 and the right roller from left to right and is locked by a bolt; the lower roller set 232 is mounted at the lower end of the roller bracket 233 by a second screw 237; the lower end of the inverted T-shaped roller bracket 233 is provided with a lower through hole 235, and a second screw 237 sequentially penetrates through the left roller, the upper through hole 234 and the right roller from left to right and is locked by a bolt.

More specifically in the present embodiment, the roller bracket 233 includes an inverted T-shaped main body 233 a; a platform 233b is arranged at the middle section of the inverted-T main body 233a in the vertical direction, and the traction rope 30 penetrates through the platform 233b and is fixedly connected with the platform 233b, and the specific connection structure can refer to the prior art and is not described herein; a spring 233c is sleeved on the inverted T-shaped main body 233a above the platform 233 b; an auxiliary member 233d is sleeved on the inverted-T-shaped main body 233a above the spring 233 c; the upper roller group 231 is locked and installed at both sides of the auxiliary member 233d by nuts; an adjusting nut 233e is screwed on the inverted T-shaped main body 233a above the auxiliary member 233 d; the lower roller set 232 is mounted at the lower end of the roller bracket 233 by a second screw 237; during installation, the lower roller set 232 is installed at the lower end of the roller bracket 233 through the second screw 237, the upper roller set 231 is installed at two sides of the auxiliary component 233d through nut locking, the auxiliary component 233d on which the upper roller set 231 is installed is sleeved on the inverted T-shaped main body 233a, and the adjusting nut 233e is rotated to adjust the upper roller set 231 and the gap between the lower roller set 232 and the guide roller 22.

More specifically, in the embodiment, the driving device 10 includes a motor 11 installed on one side of the pulling rope 30 and a receiving turntable 12 fixedly connected with an output shaft of the motor 11, the output shaft of the motor 11 is connected with the receiving turntable 12 through a bolt in a locking manner; the front end of the pulling rope 30 is fixed in the receiving turntable 12, and the specific fixing structure can refer to the prior art, which is not described herein.

When the control device works, the motor 11 rotates clockwise, the traction rope 30 is released, and under the action of the gravity of the control rod 40, the traction rope 30 connected with the control rod 40 sinks stably under the action of the guide device 20 and the guide wheel 50; the motor 11 rotates counterclockwise, the traction rope 30 is wound by the storage turntable 12, and the traction rope 30 is stably lifted up under the action of the guide device 20 and the guide wheel 50.

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.