CN-116386915-B - Nuclear reactor neutron measurement channel installation equipment

Abstract

A neutron measuring channel installation device of a nuclear reactor comprises a stand column, an annular seat, a positioning cylinder and a rotary installation part, wherein the rotary installation part is connected with the stand column, the rotary installation part and the annular seat are tightly attached to each other, the rotary installation part is fixedly matched with the annular seat through the positioning cylinder, a fixed shell and a stand column rib are arranged on the stand column, the stand column rib is fixed on the shell, an upper silver linear guide rail A and an upper silver linear guide rail B are fixed on the shell through bolts, handles are connected to the left side and the right side of the shell, a screw rod seat A and a screw rod seat B are connected with the upper surface of the shell through bolts, a supporting plate is arranged on the screw rod, a tension pressure sensor is installed on the supporting plate and fixed through a tension pressure sensor installation plate, the supporting plate is contacted with a sliding supporting plate, an oblique pulling rib is connected with a clamping jaw part, a stand column bottom plate is fixedly connected with the fixed shell and the stand column rib, a round groove is formed in the middle of the stand column bottom plate and is used for being matched with the positioning cylinder, and the upper column vertical cover is connected with a top supporting part through bolts.

Inventors

• XU DONG
• CHEN PENG
• HUANG JUNPENG
• LI YUANPENG
• CHEN SONG
• SUN YONG
• MA XIAOLONG
• LENG LINGFENG
• CHEN YANFA
• CHEN LIANG

Assignees

• 江苏核电有限公司
• 连云港斯克斯机器人科技有限公司

Dates

Publication Date

20260512

Application Date

20230310

Claims (8)

1. 1. A nuclear reactor neutron measurement channel mounting device is characterized by comprising a stand column (1), an annular seat (2), a positioning cylinder (3) and a rotary mounting component (4), wherein the rotary mounting component (4) is connected with the stand column (1) and is tightly attached to the stand column, and the rotary mounting component (4) is matched with the annular seat (2) in a positioning and mounting way through the positioning cylinder (3); The vertical column (1) is provided with a fixed shell (11) and a vertical column rib (12), the vertical column rib (12) is fixed on the shell (11), an upper silver linear guide rail A (13) and an upper silver linear guide rail B (14) are fixed on the shell (11) through bolts, a handle (115) is connected to the left side and the right side of the shell (11), a screw rod seat A (111) and a screw rod seat B (112) are connected with the upper surface of the shell (11) through bolts, a support plate (16) is borne on the screw rod (15), a tension pressure sensor (118) is installed on the support plate (16) and fixed through a tension pressure sensor installation plate (113), the support plate (16) is contacted with a slipping plate (17), the slipping plate (17) and a clamping jaw part (18) are connected through oblique stretching ribs (116), a vertical column bottom plate (19) is fixedly connected with the fixed shell (11) and the vertical column rib (12), a circular groove is formed in the middle of the vertical column bottom plate (19) and used for being matched with a positioning cylinder (3), and the upper vertical column cover (110) is connected with a top supporting part (114) through bolts.
2. 2. The nuclear reactor neutron measurement channel mounting device according to claim 1, wherein a center support (181) is arranged on the clamping jaw component (18), the center support (181) is fixedly attached to the diagonal lacing wire (116), the pressure spring component (188) presses the left clamping plate and the right clamping plate (182) towards the center support (181), the guide rod (187) penetrates through the left clamping plate and the right clamping plate (182) and the center support (181), the left clamping plate and the right clamping plate (186) press the pressure spring component (188) and are fixed on the linear module (185) through bolts, the neutron measurement channel (51) is in contact with the clamping rubber (189), and the speed regulating motor (183) is connected with the screw rod (15) and sleeved with the tightening motor base (184).
3. 3. The nuclear reactor neutron measurement channel mounting device according to claim 2, wherein the annular seat (2) comprises an annular supporting plate (21), annular supporting legs (22) and annular supporting ribs (23), the annular supporting plate (21) is matched with the positioning cylinder (3) to support the upright post (1), and the annular supporting ribs (23) limit free shaking of the annular supporting legs (22).
4. 4. A nuclear reactor neutron measurement channel mounting device according to claim 1, wherein the rotary mounting member (4) comprises a rotary mounting plate (41) and annular legs (42).
5. 5. A nuclear reactor neutron measurement channel mounting device according to claim 1, wherein the stud ribs (12) are bolted to the housing (11).
6. 6. The nuclear reactor neutron measurement channel mounting device according to claim 1, wherein the screw seat A (111) and the screw seat B (112) support the screw (15) through angular contact ball bearings.
7. 7. A nuclear reactor neutron measurement channel mounting device according to claim 1, wherein the diagonal tie (116) is bolted to the slip plate (17) and the jaw member (18).
8. 8. A nuclear reactor neutron measurement channel mounting device according to claim 1, wherein the column bottom plate (19) is fixedly connected with the fixed shell (11) and the column ribs (12) through bolts.

Description

Nuclear reactor neutron measurement channel installation equipment Technical Field The invention relates to the technical field of nuclear reactor maintenance tools of nuclear power stations, in particular to a nuclear reactor neutron measurement channel installation device. Background In a 163-group fuel assembly of a reactor core of a No. Tian Wan VVER unit of the nuclear power station 1-4, 54 neutron temperature measuring channels are arranged according to the core monitoring requirements and are used for monitoring the neutron flux density and the coolant temperature of the reactor core in real time. During normal operation of the unit, 54 neutron temperature measurement channels are always installed in the reactor core. And during the unit overhaul period, after the core is unloaded, the neutron temperature measurement channel is manually pulled out. After the core loading is completed, the manual installation work of the neutron temperature measurement channel is performed. The concrete installation flow is as follows, after the transportation of protection tube assembly transport platform is in place, the staff is through binding 54 ropes that prepare in advance to neutron temperature measurement channel's sealed position, and fix protection tube assembly transport platform layer 3, after binding all neutron temperature measurement channel, take up the operation by protection tube assembly transport platform layer 1 personnel to the rope, keep neutron temperature measurement channel's vertical, carry out manual installation by operating personnel to neutron temperature measurement channel by protection tube assembly transport platform layer 3, neutron temperature measurement channel removes fixed rope and adds protection device after the installation is in place. In the process of manually installing a neutron temperature measurement channel, the following problems exist: 1. at present, only neutron temperature measurement channels can be installed by manpower, and installation automation cannot be realized; 2. binding and fixing the neutron temperature measurement channel only through ropes, wherein foreign matters are at risk of falling off; 3. Personnel complete the installation of all 54 neutron temperature measurement channels, the manual cooperation is complicated, and the manual fixing time is long; 4. Due to the high working environment temperature and high radiation dosage, the single person working time is limited, the number of neutron temperature measurement channels installed by personnel is limited, and the whole working time is long; 5. personnel can complete the whole work only by repeated rotation, and risks such as heatstroke, high collective radiation dose and the like exist; By summarizing and feeding back the installation experience of the current neutron temperature measurement channel, the outstanding problems are solved by adopting optimization and improvement measures, and the installation equipment of the neutron measurement channel of the nuclear reactor is developed mainly in consideration of the adverse factors of the manual operation of the work, so that the overhaul operation efficiency of a nuclear reactor control protection system is improved, the working time of a major repair critical path is shortened, the heatstroke risk of personnel is reduced, and the consumed manual time and collective dosage are reduced. In order to realize the automatic installation work of the neutron temperature measurement channel, a nuclear reactor neutron temperature measurement channel installation device is provided. Disclosure of Invention The invention aims to solve the problem of installation of a neutron measurement channel of an existing nuclear reactor, and discloses nuclear reactor neutron measurement channel installation equipment which comprises a stand column, an annular seat, a positioning cylinder, a rotating installation component and a rotating installation component, wherein the annular seat is matched with the positioning cylinder, sleeved on the positioning cylinder and used for supporting an integral structure, the positioning cylinder is matched with the annular seat and the rotating installation component, the positioning cylinder is clamped at a circular groove to play a role in positioning, the rotating installation component is connected with the stand column, the rotating installation component and the stand column are tightly attached, and the rotating installation component drives the stand column to freely rotate so as to meet the requirements under different working conditions. The invention has the technical scheme that the nuclear reactor neutron measurement channel mounting equipment comprises a stand column, an annular seat, a positioning cylinder and a rotary mounting component, wherein the rotary mounting component is connected with the stand column and is tightly attached to the stand column; the column is provided with a fixed shell and column ribs,