CN107993732A - A kind of automatic level adjusting device of sea nuclear power unit - Google Patents

Abstract

The invention relates to an automatic level adjustment device for a marine nuclear power plant. The offshore nuclear power plant includes a reactor containment, a reactor primary and secondary circuit and power generation equipment, wherein the automatic level control device may include a central hanging basket, a hanging basket platform and at least two The first-stage rotating ring, the central hanging basket is hemispherical, and its two ends are installed on the radially opposite positions of the first-stage rotating ring through the first-stage bearings, and the first-stage rotating ring passes through two radially opposite next stages The bearing is connected with the next stage rotating ring, and so on. The last stage rotating ring is installed on the reactor containment through two diametrically opposite final stage bearings. Relative to the reactor containment rotating in any direction, the hanging basket platform is fixedly arranged on the lower part of the central hanging basket, and the primary and secondary circuits of the reactor and the power generation equipment are installed on the hanging basket platform so that the center of gravity of the central hanging basket is located below the center of the ball.

Description

Automatic level adjustment device for offshore nuclear power plant

technical field

The invention relates to the field of nuclear science and engineering, in particular to an automatic level adjustment device for a marine nuclear power plant.

Background technique

The marine environment will cause sway, tilt and heave effects on the nuclear power plant at sea, especially the inclination caused by the marine environment to the nuclear power plant will bring a great test to the safe operation of the nuclear power plant, and at the same time limit the nuclear power plant at sea. device development. Existing offshore nuclear power plants have set clear requirements on the inclination angle, limiting the allowable inclination angle of the device, but it has not fundamentally solved the problem.

Contents of the invention

The invention aims to provide an automatic level adjustment device for a marine nuclear power plant to solve the inclination problem of the nuclear power plant caused by the marine environment. For this reason, the concrete technical scheme that the present invention adopts is as follows:

An automatic level adjustment device for an offshore nuclear power plant, the offshore nuclear power plant includes a reactor containment, a reactor primary and secondary circuit, and power generation equipment, wherein the automatic level adjustment device may include a central hanging basket, a hanging basket platform, and at least two stages Rotating ring, the central hanging basket is hemispherical, and its two ends are respectively installed on the radially opposite positions of the first-stage rotating ring through the first-stage bearings, and the first-stage rotating ring passes through two radially opposite next The first-stage bearing is connected to the next-stage rotating ring, and so on. The last-stage rotating ring is installed on the reactor containment through two radially opposite last-stage bearings. The positions of the bearings of each stage are different, so that all The central hanging basket can rotate in any direction relative to the reactor containment, the hanging basket platform is fixedly arranged on the lower part of the central hanging basket, and the primary and secondary circuits of the reactor and the power generation equipment are installed on the hanging basket platform , so that the center of gravity of the central hanging basket is located below its center of sphere.

Further, the rotating ring is arranged in two stages, called the first-stage rotating ring and the second-stage rotating ring respectively, the central hanging basket is connected with the first-stage rotating ring through the first-stage bearing, and the second-stage rotating ring is connected with the first-stage rotating ring. The first-stage rotating ring is connected with the second-stage rotating ring through the second-stage bearing, the second-stage rotating ring is installed on the reactor containment through the third-stage bearing, and the first-stage bearing and the first-stage The three-stage bearings are respectively located in mutually orthogonal positions on the horizontal plane, and the second-stage bearings are located in the vertical direction.

Further, each level of bearings has an axial center through hole to facilitate the passage of cables.

The present invention adopts above-mentioned technical scheme, and the beneficial effect that has is as follows:

1. Through the structural design, the automatic level adjustment device relies on the inertia of the nuclear power plant itself to maintain the level without providing additional energy, which meets the requirements of the passive design of advanced nuclear power plants.

2. The number of stages of the rotating ring can be increased, and the more stages of rotating rings can improve the redundancy of the device and ensure the reliability of the device.

3. The connection cables between various devices installed on the central hanging basket and devices outside the reactor containment can pass through the axial center through hole of the bearing and be fixed on the rotating ring. Due to the relative distance between the bearings, no Change, the cable will not be pulled due to the rotation of the central hanging basket.

Description of drawings

1 is a perspective view of an automatic level adjustment device according to an embodiment of the present invention;

Fig. 2 is a schematic sectional view of the automatic level adjustment device shown in Fig. 1 installed on the reactor containment vessel.

Detailed ways

To further illustrate the various embodiments, the present invention is provided with accompanying drawings. These drawings are a part of the disclosure of the present invention, which are mainly used to illustrate the embodiments, and can be combined with related descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should understand other possible implementations and advantages of the present invention. Components in the figures are not drawn to scale, and similar component symbols are generally used to denote similar components.

The present invention will be further described in conjunction with the accompanying drawings and specific embodiments. As shown in FIG. 1 and FIG. 2 , an automatic level adjustment device for a marine nuclear power plant may include a central hanging basket 1 , a hanging basket platform 2 , a first-stage rotating ring 3 and a second-stage rotating ring 4 . Among them, the central hanging basket 1 has a hemispherical shape, and its two ends are installed on the radially relative positions of the first-stage rotating ring 4 through the first-stage bearings 5, and the first-stage rotating ring passes through two radially opposite first-stage rotating rings. The secondary bearing 6 is connected with the second-stage rotating ring 4, and the second-stage rotating ring 4 is installed on the reactor containment vessel 8 through two diametrically opposite third-stage bearings 7. Among them, the first-stage bearing 5 and the third-stage bearing 7 are respectively located on the mutually orthogonal positions of the horizontal plane passing through the center of the center basket, and the second-stage bearing 6 is located in the vertical direction so that the center basket 1 can be opposite to each other. The reactor containment vessel 4 rotates in any direction. Those skilled in the art should understand that the number of stages of the rotating ring can be increased, and the more stages of rotating rings can improve the redundancy of the device and ensure the reliability of the device. The rotating rings at all levels are connected by bearings at different positions, so that the central hanging basket 1 can rotate in any direction relative to the reactor containment vessel 4 . The hanging basket platform 2 is fixedly arranged on the lower part of the central hanging basket 1, and the first and second reactor circuits and power generation equipment (not shown) of the offshore nuclear power plant are installed on the hanging basket platform 2, so that the center of gravity of the central hanging basket 2 is located at Below the center of the sphere (that is, the center of the overall device). Therefore, no matter how inclined the reactor containment vessel 4 of the offshore nuclear power plant is due to the impact of waves, the central hanging basket can remain horizontal, thereby ensuring the safe operation of the nuclear power plant.

Preferably, the bearings 5, 6 and 7 of each stage have axial central through holes 51, 61 and 71, so as to facilitate the passage of cables (not shown). That is, the connection cables between various devices installed on the central hanging basket (for example, the primary and secondary circuits of the reactor and power generation equipment, etc.) Through the axial center through hole of the bearing and fixed on the rotating ring, since the relative distance of the bearing will not change, the cable will not be pulled due to the rotation of the central hanging basket.

Although the present invention has been particularly shown and described in conjunction with preferred embodiments, it will be understood by those skilled in the art that changes in form and details may be made to the present invention without departing from the spirit and scope of the invention as defined by the appended claims. Making various changes is within the protection scope of the present invention.

Claims (3)

1. An automatic leveling device for an offshore nuclear power plant, said offshore nuclear power plant comprising a reactor containment vessel, a reactor primary and secondary circuit and power generation equipment, characterized in that it comprises a center hanging basket, a hanging basket platform and at least two stages of rotation The central hanging basket is hemispherical, and its two ends are installed on the radially opposite positions of the first-stage rotating ring through the first-stage bearings, and the first-stage rotating ring passes through two radially opposite next stages The bearing is connected with the next stage rotating ring, and so on. The last stage rotating ring is installed on the reactor containment through two diametrically opposite final stage bearings. The positions of the bearings of each stage are different, so that the The central hanging basket can rotate in any direction relative to the reactor containment, the hanging basket platform is fixedly arranged on the lower part of the central hanging basket, and the primary and secondary circuits of the reactor and the power generation equipment are installed on the hanging basket platform, So that the center of gravity of the central hanging basket is located below its center of sphere. 2. The automatic level adjustment device of marine nuclear power plant as claimed in claim 1, characterized in that, the rotating ring is arranged in two stages, which are respectively called the first-stage rotating ring and the second-stage rotating ring, and the center The hanging basket is connected with the first-stage rotating ring through the first-stage bearing, the first-stage rotating ring is connected with the second-stage rotating ring through the second-stage bearing, and the second-stage rotating ring is connected with the third-stage rotating ring. Bearings are installed on the reactor containment vessel, the first-stage bearings and the third-stage bearings are respectively located in mutually orthogonal positions on a horizontal plane, and the second-stage bearings are located in a vertical direction. 3. The automatic level adjustment device of marine nuclear power plant as claimed in claim 1, characterized in that, the bearings of all levels have axial center through holes.