Exhaust device of nuclear power plant

Abstract

The utility model discloses an air exhaust device of a nuclear power plant. The air exhaust device comprises an air exhaust barrel, a supporting frame, a connecting assembly installed between the air exhaust barrel and the supporting frame and an air exhaust motor installed in the supporting frame. A containing space for maintainers to pass through is formed between the exhaust cylinder and the supporting frame, and the connecting assembly comprises an upper flange, a lower flange, a plurality of positioning guide rods and a soft covering part. The upper flange is detachably connected to the exhaust cylinder, the lower flange is detachably connected to the supporting frame, the upper flange and the lower flange are connected through a plurality of positioning guide rods, the positioning guide rods are used for adjusting the distance between the upper flange and the lower flange, and the two ends of the soft covering part are connected to the upper flange and the lower flange correspondingly. The soft covering part is arranged in the circumferential direction of the upper flange in a covering mode. The connecting assembly of the exhaust device of the nuclear power plant is simple to install and easy to operate, can realize the maintenance of the motor under the condition of ensuring the safety of maintenance personnel and equipment, and avoids the collision and damage risks in the disassembly and assembly process of the motor.

Description

Technical Field

[0001] The utility model relates to the field of nuclear power plant maintenance, in particular to an exhaust device for a nuclear power plant. Background Art

[0002] Due to the heavy weight of the motor itself, limited on-site space, and the fact that the motor is mounted in a support frame, it is difficult to easily access the motor for maintenance, making regular disassembly and maintenance impossible. If the unit is cut to disassemble and assemble, the structural stability and vibration characteristics of the unit will be greatly affected. Therefore, it is necessary to design a device that facilitates disassembly and installation based on the site conditions to facilitate personnel to enter the equipment for daily maintenance work. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an exhaust device for a nuclear power plant.

[0004] The technical solution adopted by the utility model to solve the technical problem is: constructing a nuclear power plant exhaust device, which includes an exhaust cylinder, a support frame, a connecting component installed between the exhaust cylinder and the support frame, and an exhaust motor installed in the support frame;

[0005] An accommodating space for maintenance personnel to pass through is formed between the exhaust cylinder and the support frame;

[0006] The connecting assembly includes an upper flange, a lower flange, a plurality of positioning guide rods, and a soft cover;

[0007] The upper flange is detachably connected to the exhaust cylinder body, and the lower flange is detachably connected to the support frame. The upper flange and the lower flange are connected by a plurality of positioning guide rods. The positioning guide rods are used to adjust the distance between the upper flange and the lower flange. The two ends of the soft cover are respectively connected to the upper flange and the lower flange. The soft cover is arranged to cover along the circumferential direction of the upper flange.

[0008] In some embodiments, the soft cover is a fire-resistant cloth.

[0009] In some embodiments, the number of the positioning guide rods is four, and the four positioning guide rods are evenly arranged along the circumferential direction of the upper flange.

[0010] In some embodiments, the positioning guide rod is threadedly connected to both the upper flange and the lower flange.

[0011] In some embodiments, an air volume sensor is provided on the upper flange.

[0012] In some embodiments, a temperature sensor is provided on the upper flange.

[0013] In some embodiments, a spiral blade group is provided on the upper flange.

[0014] In some embodiments, the upper flange and the lower flange are circular or rectangular in shape.

[0015] In some embodiments, a check valve is provided on the lower flange.

[0016] In some embodiments, the upper flange is connected to the exhaust cylinder through a first fastener.

[0017] In some embodiments, the lower flange is connected to the support frame via a second fastener.

[0018] The implementation of the utility model has the following beneficial effects: the nuclear power plant exhaust device adds a connection component to facilitate maintenance personnel to repair the motor. The exhaust cylinder can be fixedly connected to the steel structure on site, the support frame is fixedly supported on the ground, and the upper flange can be detachably connected to the exhaust cylinder via a first fastener, and the lower flange can be detachably connected to the support frame via a second fastener. Both the first fastener and the second fastener can be bolts. The soft cover can circle around to cover the accommodating space between the exhaust cylinder and the support frame. The soft cover can move with the movement of the upper flange. The soft cover can effectively isolate the heat transfer of high-temperature gas. At the same time, the soft cover can block smoke or other debris inside the nuclear power plant exhaust device from entering the external space. Under normal operating conditions, the soft cover acts as a shell. When the motor needs to be repaired, the entire connection assembly can be disassembled: the upper flange from the exhaust cylinder, and the lower flange from the support frame. Maintenance personnel can then enter the space between the exhaust cylinder and the support frame, remove the motor, and perform maintenance, or directly perform on-site maintenance. The nuclear power plant exhaust system also features multiple positioning guide rods to adjust the distance between the upper and lower flanges, adapting to varying distances between the exhaust cylinder and the support frame. This connection assembly is simple to install and operate, effectively reducing industrial safety risks. It allows maintenance of the motor while ensuring the safety of both maintenance personnel and equipment, and avoids the risk of bumps and damage during assembly and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be considered as limiting the scope. A person of ordinary skill in the art can derive other relevant drawings based on these drawings without inventive effort. In the drawings:

[0020] Figure 1It is an overall structural diagram of a nuclear power plant exhaust device in some embodiments of the present utility model;

[0021] Figure 2 is a schematic structural diagram of a connection assembly in some embodiments of the present invention;

[0022] Figure 3 It is a schematic structural diagram of the upper flange in some embodiments of the present utility model;

[0023] Figure 4 It is a structural schematic diagram of the lower flange in some embodiments of the present utility model. DETAILED DESCRIPTION

[0024] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings and are constructed and operated in specific directions. They are only for the convenience of describing the present technical solution and do not indicate that the devices or components referred to must have specific directions. Therefore, they should not be understood as limiting the present invention.

[0025] It should also be noted that, unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected", "fixed", and "set" should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrated; they can be mechanically connected or electrically connected; they can be directly connected or indirectly connected through an intermediate medium, and they can be internal connections between two elements or interactions between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intervening elements. The terms "first", "second", and "third" are only used to facilitate the description of the present technical solution and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", and "third" can explicitly or implicitly include one or more of these features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] See also Figures 1 to 4, is a nuclear power plant exhaust device in some embodiments of the present invention, which includes an exhaust cylinder body 1, a support frame 2, a connecting assembly 3 installed between the exhaust cylinder body 1 and the support frame 2, and an exhaust motor installed in the support frame 2. An accommodation space for maintenance personnel to pass through is formed between the exhaust cylinder body 1 and the support frame 2. The connecting assembly 3 includes an upper flange 31, a lower flange 32, a plurality of positioning guide rods 33, and a soft cover 34. The upper flange 31 is detachably connected to the exhaust cylinder body 1, and the lower flange 32 is detachably connected to the support frame 2. An accommodation space for maintenance personnel to pass through is formed between the upper flange 31 and the lower flange 32. The upper flange 31 and the lower flange 32 are connected by a plurality of positioning guide rods 33. The positioning guide rods 33 are used to adjust the distance between the upper flange 31 and the lower flange 32. The two ends of the soft cover 34 are respectively connected to the upper flange 31 and the lower flange 32. The soft cover 34 is arranged to cover along the circumferential direction of the upper flange 31.

[0027] Understandably, since the motor is mounted in the support frame 2, it is not convenient to perform maintenance on the motor, making it impossible to perform regular disassembly and maintenance. Therefore, in this embodiment, a connecting assembly 3 is added to facilitate maintenance personnel to perform maintenance on the motor. The exhaust cylinder 1 can be fixedly connected to the steel structure on site, and the support frame 2 is fixedly supported on the ground. The upper flange 31 can be removably connected to the exhaust cylinder 1 via a first fastener, and the lower flange 32 can be removably connected to the support frame 2 via a second fastener. Both the first fastener and the second fastener can be bolts. The flexible cover 34 can wrap around and cover the accommodation space between the exhaust cylinder 1 and the support frame 2. The flexible cover 34 can move with the movement of the upper flange 31. The flexible cover 34 can effectively isolate the heat transfer of the high-temperature gas. At the same time, the flexible cover 34 can block smoke or other debris inside the nuclear power plant exhaust device from entering the external space. Under normal operating conditions, the flexible cover 34 acts as a shell. When the motor needs to be repaired, the entire connection assembly 3 can be disassembled: the upper flange 31 can be removed from the exhaust cylinder 1, and the lower flange 32 can be removed from the support frame 2. Maintenance personnel can then enter the space between the exhaust cylinder 1 and the support frame 2, remove the motor for repair, or perform on-site maintenance. The nuclear power plant exhaust system also features multiple positioning guide rods 33 to adjust the distance between the upper flange 31 and the lower flange 32, adapting to varying distances between the exhaust cylinder 1 and the support frame 2. This connection assembly 3 is simple to install and operate, effectively reducing industrial safety risks. It allows motor repair to be performed while ensuring the safety of maintenance personnel and equipment, and avoids the risk of collision and damage during motor assembly and disassembly.

[0028] Preferably, the soft cover 34 is a fireproof cloth, which can be used in low to high temperature environments. It has the characteristics of ozone resistance, light resistance, weather aging resistance, high insulation performance, etc. It can effectively isolate the heat transfer of high-temperature gas, and can also block the smoke or other debris inside the nuclear power plant exhaust device from entering the external space, and acts as a shell when the nuclear power plant exhaust device is in normal working conditions.

[0029] In this embodiment, there are four positioning guide rods 33, evenly spaced along the circumference of the upper flange 31 to ensure overall structural stability. The positioning guide rods 33 are threadedly connected to both the upper flange 31 and the lower flange 32. After the relative position between the upper and lower flanges 31 and 32 is adjusted, the position can be locked with nuts.

[0030] The upper flange 31 is provided with an air volume sensor for detecting air volume, a temperature sensor for detecting temperature, and a spiral blade assembly 36 for convenient exhaust.

[0031] The upper flange 31 and the lower flange 32 are circular or rectangular in shape. The shapes of the upper flange 31 and the lower flange 32 can be adjusted according to actual needs and are not specifically limited here.

[0032] A check valve 35 is provided on the lower flange 32 to prevent the exhaust direction of the nuclear power plant exhaust device from being reversed.

[0033] It can be understood that the above embodiments only express the preferred implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can be made, all of which fall within the scope of protection of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should fall within the scope of coverage of the claims of the present invention.

Claims

1. A nuclear power plant exhaust device, characterized in that: It comprises an exhaust cylinder (1), a support frame (2), a connecting assembly (3) installed between the exhaust cylinder (1) and the support frame (2), and an exhaust motor installed in the support frame (2); An accommodating space for maintenance personnel to pass through is formed between the exhaust cylinder (1) and the support frame (2); The connecting assembly (3) comprises an upper flange (31), a lower flange (32), a plurality of positioning guide rods (33), and a soft cover (34); The upper flange (31) is detachably connected to the exhaust cylinder body (1), and the lower flange (32) is detachably connected to the support frame (2). The upper flange (31) and the lower flange (32) are connected via a plurality of positioning guide rods (33). The positioning guide rods (33) are used to adjust the distance between the upper flange (31) and the lower flange (32). The two ends of the soft cover (34) are respectively connected to the upper flange (31) and the lower flange (32). The soft cover (34) is arranged to cover the circumferential direction of the upper flange (31).

2. The nuclear power plant exhaust device according to claim 1, characterized in that: The soft covering member (34) is a fireproof cloth.

3. The nuclear power plant exhaust device according to claim 1, characterized in that: The number of the positioning guide rods (33) is four, and the four positioning guide rods (33) are evenly arranged along the circumferential direction of the upper flange (31).

4. The nuclear power plant exhaust device according to claim 1, characterized in that: The positioning guide rod (33) is threadedly connected to the upper flange (31) and the lower flange (32).

5. The nuclear power plant exhaust device according to claim 1, characterized in that: An air volume sensor is provided on the upper flange (31).

6. The nuclear power plant exhaust device according to claim 1, characterized in that: A temperature sensor is provided on the upper flange (31).

7. The nuclear power plant exhaust device according to claim 1, characterized in that: A spiral blade group (36) is provided on the upper flange (31).

8. The nuclear power plant exhaust device according to claim 1, characterized in that: The upper flange (31) and the lower flange (32) are circular or rectangular in shape.

9. The nuclear power plant exhaust device according to claim 1, characterized in that: A check valve (35) is provided on the lower flange (32).

10. The nuclear power plant exhaust device according to claim 1, characterized in that: The upper flange (31) is connected to the exhaust cylinder (1) via a first fastener; and the lower flange (32) is connected to the support frame (2) via a second fastener.

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