Cooling device for containment vessel of nuclear power station

Abstract

The utility model relates to the technical field of nuclear power station safety equipment, in particular to a nuclear power station containment cooling device which comprises a box body, a containment is arranged in the box body, and cooling devices are arranged at the inner end and the outer end of the box body; the self-control structure is mounted outside the box body and is in control connection with the cooling device; compared with the prior art, by arranging the cooling device, the containment can be rapidly cooled, the safety of a system where the nuclear power station is located is guaranteed, by arranging the self-control structure and controlling the high-voltage power supply to be started through the low-voltage power supply, the power and efficiency of the cooling device can be improved, and meanwhile the safety of the whole cooling device can also be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to nuclear power plant safety equipment technical field, concretely is a kind of nuclear power plant containment cooling device. BACKGROUND

[0002] Containment, also known as reactor containment, containment building or containment body, safety building or safety shelter, is the outermost building of the pressurized water reactor, which contains most of the systems and equipment of the nuclear steam supply system, and is used to accommodate the reactor pressure vessel and part of the safety system (including the primary system and equipment, shutdown cooling system), completely isolates it from the external environment, and is expected to realize the function of safety protection barrier.

[0003] To avoid the temperature from not being able to drop quickly during the cooling of the nuclear power plant containment, a device with high power is needed to spray quickly, and the quick spraying can not only play a role in quickly cooling, but also can make radioactive substances and dust settle down, so a nuclear power plant containment cooling device needs to be designed. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of nuclear power plant containment cooling device to solve the problems raised in the above background.

[0005] To solve the above technical problems, the utility model provides the following technical scheme:

[0006] A kind of nuclear power plant containment cooling device, the nuclear power plant containment cooling device includes:

[0007] Box, the inside of the box is provided with containment, and the inside and outside of the box are provided with cooling device, and the cooling device is used to cool and cool the containment in the box;

[0008] Self-control structure, the self-control structure is installed in the outside of the box and is controlledly connected between the cooling device, for realizing the self-control adjustment of cooling device according to temperature.

[0009] As a further scheme of the utility model: the cooling device includes:

[0010] U-shaped pipe, the U-shaped pipe is closely arranged to the inner wall of the box, and a plurality of spray heads are arranged on the inner side of the U-shaped pipe, and the adjacent two spray heads are equidistantly arranged;

[0011] Water pump, the water pump is fixedly installed on the outside of the box, and the water pump is connected with the U-shaped pipe through the connecting pipe.

[0012] As a further scheme of the utility model: the connecting pipe and the fixed connection of the box are fixedly connected through flange plate.

[0013] As a further step of the utility model: the self-control structure includes:

[0014] The controller shell is arranged at one side of the water pump, and a mounting plate is fixedly installed in the controller shell; a hinged armature is arranged at the top end of the mounting plate; an adjusting contact is arranged at one end of the armature; an elastic member is arranged at the other end of the armature; and the two ends of the elastic member are fixedly connected with the mounting plate and the armature, respectively.

[0015] An electromagnetic coil is fixedly installed at one end of the mounting plate; a control power supply one is fixedly installed in the controller shell; a temperature sensor is arranged at one side of the controller shell outside the box; the temperature sensor, the control power supply one and the electromagnetic coil are connected through a connecting wire one.

[0016] A fixed contact and a control power supply two are fixedly installed in the controller shell; the fixed contact, the control power supply two and the water pump are connected through a connecting wire two; and the adjusting contact and the fixed contact are adapted to each other.

[0017] As a further step of the utility model: the control power supply one is a low-voltage power supply, and the control power supply two is a high-voltage power supply.

[0018] Compared with the prior art, the utility model has the beneficial effects that:

[0019] Compared with the prior art, the cooling device can quickly cool the safety shell, ensuring the safety of the system of the nuclear power plant; the low-voltage power supply controls the start of the high-voltage power supply through the self-control structure, which can improve the power and efficiency of the cooling device and the safety of the entire cooling device. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 It is a structural schematic view of the nuclear power plant safety shell cooling device of the utility model.

[0021] Fig. 2 It is an internal structure schematic view of the box in the nuclear power plant safety shell cooling device of the utility model.

[0022] Fig. 3 It is an internal structure schematic view of the controller shell in the nuclear power plant safety shell cooling device of the utility model.

[0023] In the figure: 1-box, 2-connection pipe, 3-water pump, 4-controller housing, 5-connection wire one, 6-connection wire two, 7-temperature sensor, 8-safety shell, 9-U-shaped pipe, 10-shower head, 11-mounting plate, 12-control power one, 13-elastic member, 14-armature, 15-regulating contact, 16-electromagnetic coil, 17-fixed contact, 18-control power two. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] Please refer to Figs. 1-3 The nuclear power plant safety shell cooling device comprises:

[0026] The box 1 is internally provided with a safety shell 8, and the cooling device is arranged at the inner and outer ends of the box 1 and used for cooling and temperature reducing treatment of the safety shell 8 in the box 1.

[0027] The self-control structure is mounted outside the box 1 and in control connection with the cooling device, and is used for realizing self-control adjustment of the cooling device according to temperature.

[0028] Compared with the prior art, the cooling device can quickly cool the safety shell 8, thereby ensuring the safety of the system in which the nuclear power plant is located. The self-control structure can start the high-voltage power supply through the low-voltage power supply, thereby improving the power and efficiency of the cooling device and the safety of the entire cooling device.

[0029] Please refer to Figs. 1-2 In one embodiment, the cooling device comprises:

[0030] The U-shaped pipe 9 is arranged in close contact with the inner wall of the box 1, and a plurality of shower heads 10 are arranged on the inner side of the U-shaped pipe 9 at equal intervals between adjacent two shower heads 10.

[0031] The water pump 3 is fixedly mounted outside the box 1, and the water pump 3 is in communication with the U-shaped pipe 9 through the connection pipe 2.

[0032] Please refer to Figs. 1-2 In one embodiment, the connection pipe 2 is fixedly connected with the box 1 at the fixed connection position through a flange plate.

[0033] Please refer to Fig. 1 and Fig. 3 In one embodiment, the self-control structure comprises:

[0034] A controller housing 4 is arranged on the side of the box body 1 where the water pump 3 is located. A mounting plate 11 is fixedly installed inside the controller housing 4. A armature 14 is hingedly arranged at the top end of the mounting plate 11. An adjusting contact 15 is arranged at one end of the armature 14. An elastic member 13 is arranged at the other end of the armature 14, and the two ends of the elastic member 13 are fixedly connected with the mounting plate 11 and the armature 14 respectively.

[0035] An electromagnetic coil 16 is fixedly installed at one end of the mounting plate 11. A control power supply one 12 is fixedly installed inside the controller housing 4. A temperature sensor 7 is arranged on the side of the box body 1 where the controller housing 4 is located. The temperature sensor 7, the control power supply one 12, and the electromagnetic coil 16 are connected through a connecting wire one 5.

[0036] A fixed contact 17 and a control power supply two 18 are fixedly installed inside the controller housing 4. The fixed contact 17, the control power supply two 18, and the water pump 3 are connected through a connecting wire two 6. The adjusting contact 15 and the fixed contact 17 are adapted to each other.

[0037] In order to realize the cooling treatment of the safety shell 8, when the temperature of the safety shell 8 inside the box body 1 gradually rises, the temperature sensor 7 arranged outside the box body 1 can sense the change in temperature, so that the connecting wire one 5 circuit where the control power supply one 12 is located is in a pass-through state. When the connecting wire one 5 circuit is in the pass-through state, the electromagnetic coil 16 can generate magnetism, thereby attracting the armature 14 at one end of the mounting plate 11, causing the armature 14 to rotate around the middle part of the mounting plate 11. During the rotation of the armature 14 around the mounting plate 11, the elastic member 13 is in a stretched state, thereby causing the adjusting contact 15 to contact the fixed contact 17 inside the controller housing 4, so that the connecting wire two 6 circuit where the control power supply two 18 is located is in a conduction state. When the connecting wire two 6 circuit is in conduction, the water pump 3 is in a working state. Through the working of the water pump 3, the water can be cooled through the connecting pipe 2 and sprayed from each spray head 10 through the U-shaped pipe 9, thereby completing the cooling treatment of the safety shell 8.

[0038] Please refer to Fig. 3 In one embodiment, the control power supply one 12 is a low-voltage power supply, and the control power supply two 18 is a high-voltage power supply, which can improve the safety of the self-control structure during use.

[0039] When the temperature decreases, the connecting wire one 5 where the temperature sensor 7 is located restores the open circuit state, at this time the electromagnetic coil 16 has no magnetism, and the elastic force of the elastic member 13 can reset the armature 14, and further make the adjusting contact 15 and the fixed contact 17 disconnected, that is, the water pump 3 stops working.

[0040] The working principle of the utility model is:

[0041] In the embodiment, in order to realize the cooling treatment of the containment 8, when the temperature of the containment 8 inside the box body 1 gradually increases, the temperature sensor 7 arranged outside the box body 1 senses the temperature change, the connecting wire one 5 where the control power supply one 12 is located restores the open circuit state, and the electromagnetic coil 16 can generate magnetism when the connecting wire one 5 restores the open circuit state, and further attract the armature 14 at one end of the mounting plate 11, so that the armature 14 rotates around the middle part of the mounting plate 11, and the elastic member 13 is in the stretched state in the process of the armature 14 rotating around the mounting plate 11, and further make the adjusting contact 15 contact the fixed contact 17 inside the controller housing 4, so that the connecting wire two 6 where the control power supply two 18 is located restores the open circuit state, and the water pump 3 is in the working state when the connecting wire two 6 restores the open circuit state, and the water pump 3 can cool the water through the connecting pipe 2, and the water is sprayed from each spray head 10 through the U-shaped pipe 9, and the cooling treatment of the containment 8 is completed, and when the temperature decreases, the connecting wire one 5 where the temperature sensor 7 is located restores the open circuit state, at this time the electromagnetic coil 16 has no magnetism, and the elastic force of the elastic member 13 can reset the armature 14, and further make the adjusting contact 15 and the fixed contact 17 disconnected, that is, the water pump 3 stops working.

[0042] Of course, for those skilled in the art, the utility model is not limited to the details of the above-mentioned exemplary embodiments, and further includes the same or similar structures that can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0043] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the specification is described in this way only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

[0044] The utility model discloses a kind of technical, shape, configuration parts not described in detail are well-known technology.

Claims

1. A nuclear power plant containment cooling apparatus, characterized by: The nuclear power plant containment cooling device comprises: a box body, an inner part of the box body is provided with a containment, and both ends of the box body are provided with cooling devices for cooling and temperature reduction of the containment in the box body; a self-control structure, which is installed outside the box body and is in control connection with the cooling devices, and is used for self-control adjustment of the cooling devices according to temperature.

2. The nuclear power plant containment cooling apparatus of claim 1, wherein: The cooling device comprises: a U-shaped pipe, which is arranged close to an inner wall of the box body, and a plurality of nozzles are arranged at the inner side of the U-shaped pipe at equal intervals between adjacent nozzles; a water pump, which is fixedly installed outside the box body and is in communication with the U-shaped pipe through a connecting pipe.

3. The nuclear power plant containment cooling apparatus of claim 2, wherein: The connecting pipe is fixedly connected with the box body through a flange.

4. The nuclear power plant containment cooling apparatus of claim 2, wherein: The self-control structure comprises: a controller housing, which is arranged on one side of the box body where the water pump is located, and an installation plate is fixedly installed in the controller housing, a armature is hingedly arranged at the top end of the installation plate, an adjusting contact is arranged at one end of the armature, an elastic member is arranged at the other end of the armature, and both ends of the elastic member are fixedly connected with the installation plate and the armature, respectively; an electromagnetic coil, which is fixedly installed at one end of the installation plate, a control power supply one is fixedly installed in the controller housing, a temperature sensor is arranged on one side of the controller housing outside the box body, and the temperature sensor, the control power supply one and the electromagnetic coil are in communication through a connecting wire one; a fixed contact and a control power supply two, which are fixedly installed in the controller housing, the fixed contact, the control power supply two and the water pump are in communication through a connecting wire two, and the adjusting contact and the fixed contact are adapted to each other.

5. The nuclear power plant containment cooling apparatus of claim 4, wherein: The control power supply one is a low-voltage power supply, and the control power supply two is a high-voltage power supply.

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