Sealing device for through-wall position of full-water-cooling lower header and boiler system

Abstract

The utility model discloses a full-water-cooling lower header through-wall position sealing device and a boiler system, and belongs to the technical field of boilers. A full-water-cooling lower header through-wall position sealing device comprises a nut, a bolt, a gasket, an angle steel flange, a hoop, a pressing plate and a skin. The angle steel flange is installed on the protection plate, and one end of the skin is fixed between the angle steel flange and the pressing plate through a nut, a bolt and a gasket. And the other end of the skin is fixed on the collecting box by adopting a hoop, and enough length is reserved between the skin and the collecting box. According to the embodiment of the invention, the sealing performance is good, the pipe penetrating position of the lower collecting box is sealed without smoke leakage during operation, and expansion at the pipe penetrating position of the lower collecting box can be well absorbed during operation; the situation that the sealing device is pulled to be cracked due to the too large expansion distance and sealing fails is avoided, and safe and stable operation of the boiler is better guaranteed.

Description

Technical Field

[0001] The present application belongs to the technical field of boilers, and in particular relates to a sealing device for a fully water-cooled lower header wall penetration and a boiler system. Background Art

[0002] Ensuring the reliability of boiler sealing is the key to ensuring the normal operation of the boiler. If the boiler seal is not good, the smoke in the furnace will leak out, which will lead to a decrease in the thermal efficiency of the boiler, and frequent maintenance and repairs will be required, resulting in additional economic losses and threats to the safety of the staff. A series of problems have seriously affected the safe operation of the boiler. The sealing device design of some boilers is too simple, directly using steel plate hard sealing without considering the expansion of the boiler. After a short period of operation, the steel plate will be directly torn due to expansion, resulting in sealing failure; therefore, it is necessary to design a sealing device that can both ensure sealing and absorb expansion. Utility Model Content

[0003] The present application provides a sealing device for a fully water-cooled lower header wall penetration and a boiler system, which are used to solve the technical problems existing in the existing sealing.

[0004] In order to achieve the above application purpose, the technical solution adopted in this application is as follows:

[0005] The embodiment of the present application provides a sealing device for a fully water-cooled lower header wall penetration, comprising:

[0006] Angle flange mounted on guard plate;

[0007] The clamp installed on the header;

[0008] Skin: one end of the skin is fixedly connected to the angle steel flange through a fixing piece, and the other end is fixedly connected to the header through a clamp. The skin is used to absorb the expansion of the header.

[0009] In some embodiments, the fixing member includes: a nut, a bolt, and a washer.

[0010] In some embodiments, the sealing device for the wall penetration of the full water-cooled lower header further comprises:

[0011] Pressure plate, one end of the skin is fixed between the angle steel flange and the pressure plate by nuts, bolts and washers.

[0012] In some embodiments, the stretchable length of the skin is greater than the expansion amount of the header.

[0013] An embodiment of the present application also provides a boiler system, including the above-mentioned sealing device for the wall penetration of the fully water-cooled lower header.

[0014] Compared with the prior art, the beneficial effects of the embodiments of the present application are:

[0015] The embodiment of the present application provides a fully water-cooled lower header wall penetration sealing device and a boiler system, which have good sealing performance, and can achieve smoke-free sealing at the lower header pipe penetration during operation, and can well absorb the expansion of the lower header pipe penetration during operation; prevent the sealing device from being torn due to excessive expansion distance, resulting in sealing failure, and better ensure the safe and stable operation of the boiler. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A structural schematic diagram of a sealing device for a fully water-cooled lower header wall penetration provided in an embodiment of the present application is shown.

[0018] Illustration Description:

[0019] 1. Nut; 2. Bolt; 3. Washer; 4. Angle steel flange; 5. Hoop; 6. Pressure plate; 7. Skin. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0021] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0023] In order to illustrate the technical solution described in this application, a specific embodiment is provided below for illustration.

[0024] See also Figure 1As shown, a sealing device for a fully water-cooled lower header wall penetration provided in an embodiment of the present application includes: a nut 1, a bolt 2, a gasket 3, an angle steel flange 4, a clamp 5, a pressure plate 6 and a skin 7.

[0025] Angle steel flange 4 is installed on the guard plate, and one end of the skin 7 is fixed between the angle steel flange 4 and the pressure plate 6 by nuts 1, bolts 2 and washers 3. The other end of the skin 7 is fixed to the header by a clamp 5, and a sufficient length is reserved between the two; this can ensure good sealing and absorb the expansion of the lower header. For example, the stretchable length of the skin 7 is greater than the expansion of the header.

[0026] The sealing device at the wall penetration of the fully water-cooled lower header has good sealing performance, which can ensure that the lower header pipe penetration is sealed without smoke leakage during operation, and can well absorb the expansion of the lower header pipe penetration during operation; it prevents the sealing device from being torn due to excessive expansion distance, resulting in sealing failure, and better ensures the safe and stable operation of the boiler.

[0027] In another embodiment of the present application, a boiler system is provided, including the sealing device for the wall penetration of the fully water-cooled lower header provided in any of the above embodiments, which also has the above beneficial effects.

[0028] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A sealing device for the wall penetration of a fully water-cooled lower header, characterized in that: include: Angle flange mounted on guard plate; The clamp installed on the header; A skin, one end of which is fixedly connected to the angle steel flange via a fixing piece, and the other end of which is fixedly connected to the header via the clamp, and the skin is used to absorb the expansion of the header.

2. The sealing device for the wall penetration of the fully water-cooled lower header according to claim 1 is characterized in that: The fixing member comprises a nut, a bolt and a washer.

3. The sealing device for the wall penetration of the fully water-cooled lower header according to claim 2 is characterized in that: The sealing device at the wall penetration point of the fully water-cooled lower header also includes: A pressure plate, one end of the skin is fixed between the angle steel flange and the pressure plate through the nut, the bolt and the washer.

4. The sealing device for the wall penetration of the fully water-cooled lower header according to claim 1 is characterized in that: The stretchable length of the skin is greater than the expansion amount of the header.

5. A boiler system, characterized in that: It comprises the sealing device for the wall penetration of the fully water-cooled lower header as described in any one of claims 1 to 4.

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