Power station boiler manhole door heat preservation sealing device and power station boiler

Abstract

The utility model relates to the technical field of power station boiler equipment, in particular to a power station boiler manhole door heat preservation sealing device and a power station boiler. The first fixing plate and the second fixing plate are arranged in parallel at an interval, the sealing blanket is wound between the first fixing plate and the second fixing plate, and the first fixing plate, the sealing blanket and the second fixing plate define an inner container with the same shape as a door opening of a manhole door; the sealing blanket is wound between the first fixing plate and the second fixing plate to form the inner container with the same shape as the door opening of the manhole door, so that the inner container can be tightly attached to the door opening of the manhole door, the door opening of the manhole door is sealed, and the problems that in the prior art, the inner container of the manhole door is prone to aging, the manhole door is difficult to seal, heat dissipation loss of a boiler is caused, and the service life of the boiler is prolonged are solved. The technical problem that the overall heat efficiency of the boiler is affected is solved, frequent replacement and maintenance caused by the problem of the inner container are reduced, and the stability and reliability of operation of the power station boiler are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of power plant boiler equipment, and in particular to a heat preservation and sealing device for a power plant boiler manhole and a power plant boiler. Background Technology

[0002] Power plant boilers are the core equipment of thermal power plants, used to convert the chemical energy of fuel into thermal energy, which in turn generates high-temperature, high-pressure steam to drive a steam turbine generator to produce electricity. Among the relevant components of a power plant boiler, the manhole is an important part of the boiler equipment, mainly used for personnel to enter and exit the boiler for inspection, maintenance, cleaning, or other checks.

[0003] Currently, manhole doors are generally sealed and insulated using an inner liner. When the power plant boiler is running, the inner liner fills the manhole, thus sealing it. However, when the power plant boiler needs maintenance, repair, cleaning, or inspection, the inner liner must be removed to allow personnel to enter the boiler.

[0004] However, during the long-term operation of the power plant boiler, the inner liner of the manhole door is prone to falling off, aging, and cracking, which leads to poor sealing of the manhole door, a large amount of heat loss inside the boiler, local overheating of the boiler, increased heat loss of the boiler, and affects the overall thermal efficiency of the boiler, which in turn affects the power generation efficiency and energy utilization efficiency of the power plant. Utility Model Content

[0005] The purpose of this utility model is to provide a heat preservation and sealing device for the manhole door of a power plant boiler and the power plant boiler, so as to solve the technical problem in the prior art that during the long-term operation of the power plant boiler, the inner liner of the manhole door is prone to falling off, aging and cracking, which leads to poor sealing of the manhole door, a large amount of heat loss inside the boiler, local overheating of the boiler, increased heat loss of the boiler, and affects the overall thermal efficiency of the boiler, and thus affects the power generation efficiency and energy utilization efficiency of the power plant.

[0006] In the first aspect, the present invention provides a heat preservation and sealing device for a manhole door of a power plant boiler, comprising a first fixing plate, a second fixing plate, and a sealing blanket;

[0007] The first fixing plate and the second fixing plate are arranged in parallel and spaced apart. The sealing blanket is rolled up between the first fixing plate and the second fixing plate. The first fixing plate, the sealing blanket and the second fixing plate surround and form an inner liner with the same shape as the door opening of the manhole door.

[0008] Furthermore, a handle is provided on the side of the first fixing plate away from the sealing blanket.

[0009] Furthermore, one end of the handle is located on the side of the first fixing plate away from the sealing blanket, and the other end of the handle passes through the sealing blanket and is connected to the second fixing plate.

[0010] Furthermore, the handle is located in the middle of the first fixing plate, and the sealing blanket is wrapped around the handle.

[0011] Furthermore, the outer diameter of the sealing blanket is larger than the inner diameter of the manhole door opening.

[0012] Secondly, this utility model also provides a power plant boiler, including the aforementioned power plant boiler manhole door insulation and sealing device.

[0013] Compared with the prior art, the present invention provides a heat preservation and sealing device for a manhole door of a power plant boiler, comprising a first fixed plate, a second fixed plate, and a sealing blanket; the first fixed plate and the second fixed plate are arranged in parallel and spaced apart, and the sealing blanket is rolled up between the first fixed plate and the second fixed plate, forming an inner liner with the same shape as the manhole door opening; by rolling the sealing blanket between the first fixed plate and the second fixed plate to form an inner liner with the same shape as the manhole door opening, the inner liner can fit tightly against the manhole door opening, thereby sealing the manhole door opening. This solves the technical problem in the prior art that the manhole door inner liner is prone to aging and difficult to seal the manhole door, resulting in boiler heat loss and affecting the overall thermal efficiency of the boiler. It also reduces the frequent replacement and maintenance caused by inner liner problems and improves the stability and reliability of power plant boiler operation. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of a heat preservation and sealing device for a power plant boiler manhole door provided in an embodiment of the present utility model.

[0016] Figure label:

[0017] 100, First fixing plate; 200, Second fixing plate; 300, Sealing blanket; 400, Handle; 500, Door opening. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0025] like Figure 1 As shown, this utility model embodiment provides a thermal insulation and sealing device for a power plant boiler manhole door, including a first fixing plate 100, a second fixing plate 200, and a sealing blanket 300; the first fixing plate 100 and the second fixing plate 200 are arranged in parallel and spaced apart, and the sealing blanket 300 is wound between the first fixing plate 100 and the second fixing plate 200. The first fixing plate 100, the sealing blanket 300, and the second fixing plate 200 surround and form an inner liner with the same shape as the door opening 500 of the manhole door.

[0026] That is, the power plant boiler manhole door insulation and sealing device provided in this embodiment of the utility model forms an inner liner with the same shape as the manhole door opening 500 by winding a sealing blanket 300 between the first fixing plate 100 and the second fixing plate 200. This allows the inner liner to fit tightly against the manhole door opening 500, thereby sealing the manhole door opening 500. This solves the technical problem in the prior art that the manhole door inner liner is prone to aging and is difficult to seal the manhole door, resulting in boiler heat loss and affecting the overall thermal efficiency of the boiler. It also reduces the frequent replacement and maintenance caused by inner liner problems and improves the stability and reliability of power plant boiler operation.

[0027] Specifically, in this embodiment, the sealing blanket 300 is specifically configured as an aluminum silicate needle-punched blanket. An aluminum silicate needle-punched blanket is a flexible fire-resistant and heat-insulating material made primarily of aluminum silicate fiber, produced through high-temperature melting, blowing into fibers, and then reinforcing with a needle-punching process. It possesses high temperature resistance, low thermal conductivity, high stability, and good resilience. Both the first fixing plate 100 and the second fixing plate 200 are circular steel plates, welded together in parallel at intervals. The sealing blanket 300 fills the space between the first fixing plate 100 and the second fixing plate 200, forming a cylindrical inner liner that fills the door opening 500 of the circular manhole, thereby providing thermal insulation and sealing for the manhole.

[0028] Furthermore, a handle 400 is provided on the side of the first fixing plate 100 away from the sealing blanket 300.

[0029] Specifically, the handle 400 can be made of metal and welded to the first fixing plate 100. The handle 400 can be U-shaped, L-shaped, or round rod-shaped. In this embodiment, the handle 400 is a round steel with an outer diameter of 12mm, and a round head is provided at the end of the handle 400, so that the worker can easily pull the inner liner out of the door opening 500 by pulling the handle 400.

[0030] Furthermore, one end of the handle 400 is located on the side of the first fixing plate 100 away from the sealing blanket 300, and the other end of the handle 400 passes through the sealing blanket 300 and is connected to the second fixing plate 200.

[0031] Specifically, in this embodiment, the handle 400 is a round steel with an outer diameter of 12mm, which passes through the first fixing plate 100 and is welded to the second fixing plate 200, with one end of the round steel protruding from the first fixing plate 100 for the operator to hold. The first fixing plate 100 is also welded to the round steel, thus ensuring the structural stability of the thermal insulation and sealing device for the manhole door of the power plant boiler.

[0032] Preferably, the handle 400 is located in the middle of the first fixing plate 100, and the sealing blanket 300 is wrapped around the handle 400.

[0033] Specifically, the handle 400 passes vertically through the geometric center of the first fixing plate 100 and is welded to the second fixing plate 200 and the first fixing plate 100. The sealing blanket 300 is wrapped around the handle 400 layer by layer to ensure the uniformity of the wrapping of the sealing blanket 300.

[0034] Furthermore, the outer diameter of the sealing blanket 300 is larger than the inner diameter of the manhole opening 500.

[0035] Specifically, in this embodiment, the outer diameter of the first fixing plate 100 and the second fixing plate 200 is set to 48cm, which is slightly smaller than the inner diameter of the manhole opening. The outer diameter of the sealing blanket 300 is set to 50cm, which is slightly larger than the inner diameter of the manhole opening 500. Thus, the sealing blanket 300 can be interference-fitted with the manhole opening 500 to ensure a sealing and heat preservation effect.

[0036] This utility model also provides a power plant boiler, including the above-mentioned power plant boiler manhole door insulation and sealing device, which naturally has all the technical effects of the above-mentioned power plant boiler manhole door insulation and sealing device, and will not be repeated here.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A heat-insulating and sealing device for a manhole door of a power plant boiler, characterized in that, It includes a first fixing plate (100), a second fixing plate (200), and a sealing blanket (300); The first fixing plate (100) and the second fixing plate (200) are arranged in parallel and spaced apart. The sealing blanket (300) is wrapped between the first fixing plate (100) and the second fixing plate (200). The first fixing plate (100), the sealing blanket (300) and the second fixing plate (200) surround and form an inner liner with the same shape as the door opening (500) of the manhole door.

2. The thermal insulation and sealing device for the manhole door of a power plant boiler according to claim 1, characterized in that, A handle (400) is provided on the side of the first fixing plate (100) away from the sealing blanket (300).

3. The thermal insulation and sealing device for the manhole door of a power plant boiler according to claim 2, characterized in that, One end of the handle (400) is located on the side of the first fixing plate (100) away from the sealing blanket (300), and the other end of the handle (400) passes through the sealing blanket (300) and is connected to the second fixing plate (200).

4. The thermal insulation and sealing device for the manhole door of a power plant boiler according to claim 3, characterized in that, The handle (400) is located in the middle of the first fixing plate (100), and the sealing blanket (300) is wrapped around the handle (400).

5. The thermal insulation and sealing device for the manhole door of a power plant boiler according to claim 4, characterized in that, The outer diameter of the sealing blanket (300) is larger than the inner diameter of the manhole opening (500).

6. A power plant boiler, characterized in that, The device includes the thermal insulation and sealing device for the manhole door of a power plant boiler as described in any one of claims 1-5.

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