CN210688174U - Split type side blocking plate that once inclines - Google Patents

Abstract

The split type primary side blocking plate comprises a low water level combined blocking plate and a high water level combined blocking plate; the low water level combined blocking plate is a circular plate and comprises a middle split body A and side split bodies A which are movably connected to the two sides of the middle split body A through male and female insertion blocks; the high water level combined blocking plate is a circular plate and comprises a middle split body B and side split bodies B which are movably connected to the two sides of the middle split body B through male and female plugging blocks. The utility model discloses a split type design, each components of a whole that can function independently can splice or separate, when adopting and once a side closure plate dismouting robot to carry out the dismouting operation, once only need components of a whole that can function independently of centre gripping to operate, alleviateed centre gripping weight greatly to the miniaturized design of a side closure plate dismouting robot provides prerequisite basis.

Description

Split type side blocking plate that once inclines

Technical Field

The utility model relates to a nuclear power station steam generator's part, especially a split type side closure plate once.

Background

Nuclear power is a safe, reliable, clean and efficient electric power energy and is a strategic key point of energy development in China. With the rapid development of the nuclear power industry and the expansion of the nuclear power market in China, the safety and the reliability of nuclear facilities are improved, the radiation dose of operators is reduced as much as possible, the working environment of the operators is improved, and the method is a subject to be solved urgently in the nuclear power industry in China. China is working in the field of nuclear power station robots later, and although a small number of mechanical arms or robot platforms are developed in recent years to realize specific operation in a local radioactive environment, the number is small, the application range is narrow, and the intelligence and the reliability are not high. At present, a lot of work is directly finished by manpower.

Because many maintenance areas in the nuclear power station belong to a special high-radioactivity environment or personnel in many areas can not reach due to intensive arrangement of components, a large number of intelligent, automatic and personnel remote control high-end special robot tools are developed for inspection, maintenance, cleaning and defect repair work of high-radioactivity equipment of the nuclear power station in countries in the world, the nuclear power robot industry is formed, and the operation reliability and economy of the nuclear power station are greatly improved.

During the overhaul of the nuclear power plant, the interior of the steam generator needs to be overhauled. Because steam generator is through the trunk line with the reactor pressure vessel is direct continuous, in order to prevent that steam generator from once side foreign matter from getting into pressure vessel through the trunk line and producing certain destruction to reactor core fuel, need carry out interim shutoff to a return circuit trunk line, the closure plate is called low water level closure plate under this operating mode. Secondly, when the nuclear power station is overhauled for the first time and during ten years of overhaul, the work of the steam generator plugging plate is carried out when the water is stored in the reactor, the plugging plate not only has the function of preventing foreign matters under the working condition, but also needs to bear the water pressure to play a sealing role so as to prevent primary loop water from overflowing from the manhole of the steam generator, and the plugging plate under the working condition is called as a high-water-level plugging plate.

The hydroecium structure of steam generator lower part is shown in fig. 5-6, hydroecium 3 is inside to be equipped with the inner chamber, be equipped with vertical baffle 31 of arranging in the 3 inner chambers of hydroecium, baffle 31 separates 3 inner chambers of hydroecium for first sub-chamber 321 and second sub-chamber 322, the 3 lower extremes of hydroecium is equipped with the first manhole 331 that feeds through to first sub-chamber 321, the second manhole 332 that feeds through to second sub-chamber 322, the first main pipeline hole 341 that feeds through to first sub-chamber 321 and the second main pipeline hole 342 that feeds through to second sub-chamber 322, the edge of first main pipeline hole 341 and second main pipeline hole 342 is equipped with annular boss and bolt hole.

The side closure plate that once has now includes the low water level closure plate of demountable installation in hydroecium first main pipe line hole department and the high water level closure plate of demountable installation in hydroecium second main pipe line hole department, and low water level closure plate and high water level closure plate are the structure of integral type, and the side department of low water level closure plate is equipped with the link plate that articulates with the annular boss in the hydroecium inner chamber, is equipped with the unthreaded hole corresponding with the bolt hole in the hydroecium inner chamber on the high water level closure plate. The low water level plugging plate is hung on an annular boss in the inner cavity of the water chamber through a hanging plate, so that a first main pipeline hole of the water chamber is sealed. The high water level blocking plate is installed at the bolt hole in the inner cavity of the water chamber through a bolt, so that a second main pipeline hole of the water chamber is closed.

The existing disassembly and assembly work of the primary side plugging plate is finished manually, namely, an operator drills in or out the water chamber through a manhole to disassemble and assemble the primary side plugging plate. The structure of the existing primary side closure plate is of a folded type, an operator is required to send the interior of the water chamber into the water chamber from the outside of the water chamber, the closure plate is opened and placed at a flange of a main pipeline by the operator in the water chamber, and due to nuclear radiation, the installation work of the closure plate is required to be manually completed in turn.

At present, the primary side blocking plate dismounting robot is actively researched and developed at home and abroad, but the technical difficulty in the research and development process is as follows: the robot for disassembling and assembling the primary side plugging plate comprises a main body and a manipulator arranged on the main body, wherein the main body is usually arranged outside a water chamber, the manipulator needs to clamp the primary side plugging plate to stretch into an inner cavity of the water chamber from a manhole of the water chamber for installation, therefore, the manipulator is equivalent to a cantilever beam in a working state, the weight of the existing primary side plugging plate is usually more than 20kg, an object clamped by the manipulator is too heavy, the stability of the whole robot for disassembling and assembling the primary side plugging plate can be adversely affected, and the load of a driving part can be increased. Simultaneously because hydroecium inner space and hydroecium manhole size restriction, need artifical constantly change the angle when current closure plate is sent into hydroecium inside, adopt current closure plate just must restrict the operation flexibility of once closure plate dismouting robot.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of prior art, and provide a split type side closure plate, it has solved side closure plate dismouting robot and the current problem that side closure plate is not the adaptation.

The technical scheme of the utility model is that: the split type primary side blocking plate comprises a low water level combined blocking plate and a high water level combined blocking plate; the low water level combined blocking plate is a circular plate and comprises a middle split body A and side split bodies A which are movably connected to two sides of the middle split body A through male and female insertion blocks, two positioning ribs A which are arranged in parallel are respectively arranged on the end faces of the middle split body A and the side split bodies A on the same side, and L-shaped hanging plates are fixedly welded on the side edges of the middle split body A and the side split bodies A; the high water level combined blocking plate is a circular plate and comprises a middle split body B and side split bodies B movably connected to the two sides of the middle split body B through male and female insertion blocks, the middle split body B and the side split bodies B are respectively provided with two positioning ribs B which are arranged in parallel on the end surface of the same side, and light holes are respectively formed in the side edges of the middle split body B and the side split bodies B.

Compared with the prior art, the utility model have following advantage:

1. the side closure plate that once adopts split type design, but each components of a whole that can function independently concatenation or separation, when adopting side closure plate dismouting robot to carry out the dismouting operation, once only need a components of a whole that can function independently of centre gripping to operate, alleviateed centre gripping weight greatly to the miniaturized design of side closure plate dismouting robot provides the prerequisite basis.

2. The primary side blocking plate is provided with a positioning rib A, B, and the design is convenient for clamping a manipulator of the primary side blocking plate dismounting robot.

The invention is further described below with reference to the figures and examples.

Drawings

FIG. 1 is a schematic structural view of a low water level combination block plate from a top view;

FIG. 2 is a schematic structural view of a low water level combination block plate at a bottom view;

FIG. 3 is a schematic structural view of a high water level combination blocking plate from a top view;

FIG. 4 is a schematic structural view of the high water level combined blocking plate at a bottom view angle;

FIG. 5 is a schematic structural view of a lower water chamber of the steam generator;

fig. 6 is a top view of fig. 5.

Detailed Description

Example 1:

as shown in fig. 1-4, the split type primary side blocking plate comprises a low water level combination blocking plate 1 and a high water level combination blocking plate 2.

The low water level combined blocking plate 1 is a circular plate and comprises a middle split body A11 and side split bodies A12 movably connected to two sides of the middle split body A11 through male and female insertion blocks, two positioning ribs A13 which are arranged in parallel are respectively arranged on the end faces of the middle split body A11 and the side split bodies A12 on the same side, and L-shaped hanging plates 14 are fixedly welded at the side edges of the middle split body A11 and the side split bodies A12.

The high water level combined blocking plate 2 is a circular plate and comprises a middle split body B21 and side split bodies B22 movably connected to two sides of a middle split body B21 through male and female insertion blocks, two positioning ribs B23 which are arranged in parallel are respectively arranged on the end faces of the middle split body B21 and the side split bodies B22 on the same side, and light holes 24 are respectively arranged at the side edges of the middle split body B21 and the side split bodies B22.

The low water level combination blocking plate 1 and the high water level combination blocking plate 2 are installed in the first main pipe hole 341 and the second main pipe hole 342 of the water chamber 3, respectively.

When the low water level combined plugging plate 1 is installed, the middle split body A11 is hung on an annular boss at the edge of the first main pipeline hole 341 of the water chamber 3 through the L-shaped hanging plate 14, then the two side split bodies A12 are respectively inserted at the two sides of the middle split body A11 (through the male and female inserting blocks) to form a circular low water level combined plugging plate 1, and after the installation is completed, the L-shaped hanging plates 14 at the side edges of the two side split bodies A12 are attached to the annular boss.

When the high water level combined plugging plate 2 is installed, the middle split body B21 is installed at the corresponding position on the second main pipeline hole 342 of the water chamber 3 through bolts, then the two side split bodies B22 (through the male and female insertion blocks) are respectively inserted at the two sides of the middle split body B21 to form a circular high water level combined plugging plate 2, and then the two side split bodies B22 are fixed at the second main pipeline hole 342 of the water chamber 3 through bolts, so that the installation is completed.

Claims (1)

1. Split type side closure plate once, characterized by: comprises a low water level combined blocking plate and a high water level combined blocking plate; the low water level combined blocking plate is a circular plate and comprises a middle split body A and side split bodies A which are movably connected to two sides of the middle split body A through male and female insertion blocks, two positioning ribs A which are arranged in parallel are respectively arranged on the end faces of the middle split body A and the side split bodies A on the same side, and L-shaped hanging plates are fixedly welded on the side edges of the middle split body A and the side split bodies A; the high water level combined blocking plate is a circular plate and comprises a middle split body B and side split bodies B movably connected to the two sides of the middle split body B through male and female insertion blocks, the middle split body B and the side split bodies B are respectively provided with two positioning ribs B which are arranged in parallel on the end surface of the same side, and light holes are respectively formed in the side edges of the middle split body B and the side split bodies B.

Images