CN212648570U - Direct resistance measurement quick test plug for nuclear power plant control rod driving mechanism - Google Patents
Direct resistance measurement quick test plug for nuclear power plant control rod driving mechanism Download PDFInfo
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- CN212648570U CN212648570U CN202021255603.3U CN202021255603U CN212648570U CN 212648570 U CN212648570 U CN 212648570U CN 202021255603 U CN202021255603 U CN 202021255603U CN 212648570 U CN212648570 U CN 212648570U
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Abstract
The utility model belongs to the technical field of nuclear power station electrical maintenance, concretely relates to quick test plug is measured to direct resistance of nuclear power plant control rod drive mechanism, include: the positioning device comprises a positioning groove, positioning groove position salient points, jacks, flanges, a plug outer sleeve and an insulating bakelite; the flange welding is provided with positioning groove position salient point in the well lower part of plug outer tube on the flange, plug outer tube surface upper portion is provided with positioning groove, and the inside insulating bakelite that is provided with of plug outer tube has evenly arranged a plurality of jack on the insulating bakelite.
Description
Technical Field
The utility model belongs to the technical field of nuclear power station electrical maintenance, concretely relates to quick test plug is measured to direct resistance of nuclear power plant control rod drive mechanism.
Background
Before overhaul and after loading of a certain nuclear power plant 1, 2, 3 and 4 machine set, the direct resistance and the insulation of the electromagnetic coil of the control rod driving mechanism are measured once respectively, the purpose of measuring the direct resistance and the insulation of the electromagnetic coil of the control rod driving mechanism before overhaul is to find a defective electromagnetic coil in time so as to be convenient for replacement during overhaul, and the purpose of measuring the direct resistance and the insulation of the electromagnetic coil of the control rod driving mechanism after loading is to ensure that all the electromagnetic coils before the operation of a reactor are free of defects.
The existing electromagnetic coil direct resistance and insulation process for measuring a control rod driving mechanism has the following problems:
(1) the plug for measurement is an original factory plug, a thread sleeve head is designed on the plug, threads of the thread sleeve head are 6-7 circles, all thread pins on the thread sleeve head need to be screwed fully to be completely inserted into the jack during each measurement, 15 seconds are averagely consumed for screwing all the threads, 8 seconds are averagely consumed for dismounting the plug, too long time is consumed for dismounting the plug, and the working efficiency of measurement is seriously influenced;
(2) the environment temperature of a measuring field is high (40-50 ℃), the time for disassembling and assembling the plug is too long, the physical strength of operators is consumed too much, and the physical strength overdraft phenomenon occurs to part of the operators;
(3) the environmental dose rate of the measurement field is 0.03mSv/h, and if the time consumed for disassembling and assembling the plug by an operator is too long, the irradiated radiation dose of the operator is increased.
Therefore, in order to optimize the measurement work of the direct resistance and the insulation of the electromagnetic coil of the control rod driving mechanism, a quick test plug needs to be designed urgently, and a worker can use the quick test plug and the electromagnetic coil leading-out socket of the control rod driving mechanism to carry out quick butt joint and quick dismantling.
SUMMERY OF THE UTILITY MODEL
The utility model aims at designing a nuclear power plant control rod drive mechanism directly hinders and measures quick test plug for effectively solve current measurement control rod drive mechanism's solenoid and directly hinder and the unable quick butt joint of insulating in-process plug, the technical problem who demolishs.
The technical scheme of the utility model:
a nuclear power plant control rod drive mechanism direct resistance measurement quick test plug includes: the positioning device comprises a positioning groove, positioning groove position salient points, jacks, flanges, a plug outer sleeve and an insulating bakelite; the flange welding is provided with positioning groove position salient point in the well lower part of plug outer tube on the flange, plug outer tube surface upper portion is provided with positioning groove, and the inside insulating bakelite that is provided with of plug outer tube has evenly arranged a plurality of jack on the insulating bakelite.
The whole flange is of an oval structure, the flange is provided with two flat round surfaces, and the convex points at the positions of the positioning grooves are arranged in the middle of one flat round surface and are arranged on the same side of the outer sleeve of the plug as the positioning grooves.
The convex points at the positions of the positioning grooves are of a semicircular structure, and the centers of the convex points at the positions of the positioning grooves and the centers of the positioning grooves are on the same axis.
The positions of the plug outer sleeve, the positioning groove and the jack are matched with the position of the socket.
The plug outer sleeve is integrally of a cylindrical structure, and the positioning groove structure is of a long rectangular groove structure.
The utility model has the advantages that:
1) the utility model discloses a positioning groove of quick test plug has obvious position indication sign, can realize the quick position of confirming before the plug is pegged graft.
2) The quick test plug is not designed with a thread structure, and can be directly inserted and pulled out, so that the physical burden of operators can be reduced.
3) Each unit has 103 control rod drive mechanisms, and each control rod drive mechanism is designed with an electromagnetic coil. Before the unstacking of overhaul at every turn and every electromagnet coil after the pile up respectively measure 1 time directly hinder and insulating, 23 seconds (dress plug 15 seconds, the plug 8 seconds of tearing open) are consumed in the dismouting plug of former measuring system once, and 103 solenoid dismouting plug time is: 23 × 103 × 2 ═ 4738 s.
After the quick plug is adopted, the time for dismounting the plug of each electromagnetic coil is 5 seconds, and the time for dismounting the plug of 103 electromagnetic coils is as follows: 5 × 103 × 2 is 1030 s. The working hours are reduced: 4738-.
4) The quick test plug and the socket to be measured are quickly plugged and pulled, and the working time of direct resistance measurement of the control rod driving mechanism is shortened.
5) The quick test plug and the socket to be measured are quickly plugged and pulled, and the working efficiency of direct resistance measurement of the control rod driving mechanism is improved.
6) The quick plug is simple in design, low in cost of customizing the plug and low in transformation cost.
Drawings
Fig. 1 is a schematic view of an overall structure of a direct resistance measurement quick test plug of a nuclear power plant control rod driving mechanism according to the present invention;
FIG. 2 is a side view of a direct resistance measurement quick test plug of a nuclear power plant control rod drive mechanism according to the present invention;
FIG. 3 is a nuclear power plant control rod drive mechanism directly hinder and measure quick test plug's top view.
Wherein: 1-flange, 2-positioning groove position salient points, 3-positioning grooves, 4-plug outer sleeves, 5-insulating bakelite and 6-jacks.
Detailed Description
The invention will be further described with reference to the following drawings and examples:
the utility model discloses a nuclear power plant control rod drive mechanism directly hinders and measures quick test plug has cancelled the whole thread bush head of former plug, utilizes the flange to replace former thread bush head. The flange is directly welded to the middle lower part of the plug outer sleeve in a welding mode, such as the position of the flange 1 in figure 1. The oval structure of flange 1 makes things convenient for the staff to hold the plug.
A nuclear power plant control rod drive mechanism direct resistance measurement quick test plug includes: the plug comprises a positioning groove 3, a positioning groove position salient point 2, a jack 6, a flange 1, a plug outer sleeve 4 and an insulating bakelite 5; the flange 1 is welded in the middle and lower part of the plug outer sleeve 4, the flange 1 is provided with positioning groove position salient points 2, the upper part of the outer surface of the plug outer sleeve 4 is provided with positioning grooves 3, the inside of the plug outer sleeve 4 is provided with an insulating bakelite 5, and a plurality of jacks 6 are uniformly arranged on the insulating bakelite 5.
The whole flange 1 is of an oval structure, the flange 1 is provided with two flat round surfaces, and the positioning groove position salient points 2 are arranged in the middle of one flat round surface and are arranged on the same side of the plug outer sleeve 4 as the positioning grooves 3.
The positioning groove position salient points 2 are of semicircular structures, the centers of the positioning groove position salient points 2 and the centers of the positioning grooves 3 are on the same axis, the positions of the positioning grooves 3 of the plug in the hand can be known when the worker holds the quick test plug, and the worker can conveniently and quickly determine the alignment position of the quick test plug and the socket to be measured.
The positions of the plug outer sleeve 4, the positioning groove 3 and the jack 6 are matched with the position of the socket.
The plug outer sleeve 4 is integrally of a cylindrical structure, and the positioning groove 3 is of a long rectangular groove structure.
When a worker butt joints the quick test plug and the control rod driving mechanism electromagnetic coil leading-out socket, the worker holds the plug flange 1, utilizes the positioning groove position on the plug flange to indicate the salient points 2 to quickly determine the relative position, aligns the positioning grooves 3 on the plug outer sleeve 4 with the positioning pins on the socket, and directly inserts downwards to realize quick insertion. When the plug is disassembled, the plug flange is held by hand and is directly lifted upwards, and the plug and the socket can be quickly separated.
Example (b): the following description further explains the technical scheme with reference to the accompanying drawings, wherein the position and the size of the jack 6 on the insulating bakelite 5 are consistent with those of the original plug. The relative positions of the plug outer sleeve 4, the positioning groove 3 and the jack 6 are consistent with those of the original plug.
The utility model discloses operating method: when a worker butt joints the quick test plug and the control rod driving mechanism electromagnetic coil leading-out socket, the worker holds the plug flange 1, utilizes the positioning groove position on the plug flange 1 to indicate the salient points 2 to quickly determine the relative position, aligns the positioning grooves 3 on the plug with the positioning pins on the socket, and directly inserts downwards to realize quick plugging. When the plug is disassembled, the plug flange is held by hand and is directly lifted upwards, and the plug and the socket can be quickly separated.
In the measurement working process of direct resistance and insulation of the control rod driving mechanism electromagnetic coil, a worker can be rapidly butted with the control rod driving mechanism electromagnetic coil leading-out socket through the rapid test plug, so that the working efficiency can be improved, the time and the labor are saved, and the irradiated radiation dose is reduced.
The present invention has been described in detail with reference to the accompanying drawings and examples, but the present invention is not limited to the above examples, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. The present invention can adopt the prior art for the content which is not described in detail in the present invention.
Claims (5)
1. The utility model provides a quick test plug is measured to direct resistance of nuclear power plant control rod drive mechanism which characterized in that includes: the plug comprises a positioning groove (3), positioning groove position salient points (2), jacks (6), flanges (1), a plug outer sleeve (4) and an insulating bakelite (5); the flange (1) is welded at the middle lower part of the plug outer sleeve (4), positioning groove position salient points (2) are arranged on the flange (1), the positioning grooves (3) are arranged on the upper part of the outer surface of the plug outer sleeve (4), the insulating bakelite (5) is arranged inside the plug outer sleeve (4), and a plurality of jacks (6) are uniformly arranged on the insulating bakelite (5).
2. The rapid test plug for direct resistance measurement of a nuclear power plant control rod drive mechanism as claimed in claim 1, wherein: the whole flange (1) is of an oval structure, the flange (1) is provided with two flat round surfaces, and the positioning groove position salient points (2) are arranged in the middle of one flat round surface and are arranged on the same side of the plug outer sleeve (4) as the positioning grooves (3).
3. The rapid test plug for direct resistance measurement of a nuclear power plant control rod drive mechanism as claimed in claim 2, wherein: the positioning groove position salient points (2) are of a semicircular structure, and the centers of the positioning groove position salient points (2) and the centers of the positioning grooves (3) are on the same axis.
4. The rapid test plug for direct resistance measurement of a nuclear power plant control rod drive mechanism as claimed in claim 1, wherein: the positions of the plug outer sleeve (4), the positioning groove (3) and the jack (6) are matched with the position of the socket.
5. The rapid test plug for direct resistance measurement of a nuclear power plant control rod drive mechanism as claimed in claim 4, wherein: the plug outer sleeve (4) is integrally of a cylindrical structure, and the positioning groove (3) is of a long rectangular groove structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021255603.3U CN212648570U (en) | 2020-06-30 | 2020-06-30 | Direct resistance measurement quick test plug for nuclear power plant control rod driving mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021255603.3U CN212648570U (en) | 2020-06-30 | 2020-06-30 | Direct resistance measurement quick test plug for nuclear power plant control rod driving mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN212648570U true CN212648570U (en) | 2021-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021255603.3U Active CN212648570U (en) | 2020-06-30 | 2020-06-30 | Direct resistance measurement quick test plug for nuclear power plant control rod driving mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212648570U (en) |
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- 2020-06-30 CN CN202021255603.3U patent/CN212648570U/en active Active
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