CN213479191U - Sealing element for boiler - Google Patents
Sealing element for boiler Download PDFInfo
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- CN213479191U CN213479191U CN202022362835.5U CN202022362835U CN213479191U CN 213479191 U CN213479191 U CN 213479191U CN 202022362835 U CN202022362835 U CN 202022362835U CN 213479191 U CN213479191 U CN 213479191U
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Abstract
The utility model provides a sealing element for a boiler, which comprises a furnace wall, wherein a sealed furnace door cover is hinged and fixed on the front side of the furnace wall, a chute is arranged on the lower surface of the sealed furnace door cover, a stepped sealing plug is connected in the chute in a sliding way, the stepped sealing plug comprises a sealing plug front end and a sealing plug tail end which are integrally formed, the sealing plug front end is used for sealing a second stepped sealing port, and the sealing plug rear end is movably embedded in the chute; a cavity is arranged in the middle of the stepped sealing plug, an air bag is arranged at the bottom of the cavity, and a pressing plate for pressing the air bag is arranged at the top of the cavity; the outer wall of the front end of the sealing plug is provided with a sealing groove, a sealing bag is embedded in the sealing groove, and the sealing bag is of a hollow structure and is connected to the air bag through a pipeline; the middle part of the sealing furnace door cover is provided with a telescopic rod which penetrates into the cavity along the middle part of the tail ends of the sliding chute and the sealing plug and is connected with the pressing plate; the top of the sealing furnace door cover is also provided with a telescopic rod cover plate; the problem of prior art's wearing and tearing is solved, life and sealed effect have been guaranteed.
Description
Technical Field
The utility model belongs to the technical field of industrial boiler, concretely relates to sealing member for boiler.
Background
The industrial boiler products are divided into two types, namely steam for power generation or gas supply, for example, a fertilizer plant can use steam for vaporization, coal is used as a raw material to synthesize fertilizers, the typical industrial boiler is also mostly made of coal, and a fuel gas is generally used as a waste heat boiler for recovering waste heat. Industrial boilers it is common to see that circulating fluidized bed boilers industrial boilers are important thermal power plants. The sealing structure of the industrial boiler disclosed in chinese patent CN210462970U (1) is characterized in that a first sealing ring and a second sealing ring are respectively disposed on the lower surfaces of the horizontal furnace cover and the sealing connection ring, and an effective first sealing line is formed between the sealing connection ring and the first stepped sealing port through the sealing connection between the horizontal furnace cover, the furnace wall and the annular sealing member, thereby effectively improving the sealing performance of the horizontal furnace cover. (2) Through filling the ladder sealing plug into the second ladder sealing port, utilize the sealed effect that is echelonment structure and sealing rubber layer of the intermeshing that from top to bottom shrinks gradually, effectively form the sealed line of defence of second way, further improve the leakproofness of horizontal bell.
However, in the practical use process of the above patent, the stepped sealing plug slides in the sliding groove and the second stepped sealing port for a long time, so that the sealing rubber layer is worn quickly, and the service life and the sealing effect of the sealing rubber layer are affected; in order to solve the above problems, the present application proposes a sealing member for a boiler.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a sealing member for boiler to solve current boiler seal structure, there is the wearing and tearing problem, causes life weak point, the faster problem of result of use decline.
The utility model provides a following technical scheme:
a sealing element for a boiler comprises a furnace wall, wherein a sealing furnace door cover is hinged and fixed on the front surface of the furnace wall, and a first step sealing opening and a second step sealing opening are respectively formed in the inner wall of the furnace wall; the lower surface of the sealing furnace door cover is fixedly connected with a sealing connecting ring which is embedded in the first stepped sealing opening; the lower surface of the sealing furnace door cover is provided with a sliding groove, a stepped sealing plug is connected in the sliding groove in a sliding manner, the stepped sealing plug comprises a sealing plug front end and a sealing plug tail end which are integrally formed, the sealing plug front end is used for sealing a second stepped sealing port, and the sealing plug rear end is movably embedded in the sliding groove; a cavity is arranged in the middle of the stepped sealing plug, an air bag is arranged at the bottom of the cavity, and a pressing plate for pressing the air bag is arranged at the top of the cavity; the outer wall of the front end of the sealing plug is provided with a sealing groove, a sealing bag is embedded in the sealing groove, and the sealing bag is of a hollow structure and is connected to the air bag through a pipeline; the middle part of the sealing furnace door cover is provided with a telescopic rod, and the telescopic rod penetrates into the cavity along the middle parts of the sliding chute and the tail end of the sealing plug and is connected to the pressing plate; the top of the sealing furnace door cover is also provided with a telescopic rod cover plate.
Preferably, a first sealing ring is fixedly mounted on the lower surface of the sealing furnace door cover.
Preferably, a second sealing ring is fixedly mounted on the lower surface of the sealing connection ring.
Preferably, the lower surface of the telescopic rod cover plate is fixedly provided with a third sealing ring.
Preferably, the cross section of the front end of the sealing plug is of a tapered structure which gradually shrinks from top to bottom, and the front end of the sealing plug is matched with the second stepped sealing port.
Preferably, the sealing furnace door cover is fixedly provided with a pressure relief pipe, and the front surface of the pressure relief pipe is fixedly provided with a pressure relief valve.
Preferably, the telescopic rod is an electric push rod or an air cylinder.
The utility model has the advantages that:
the sealing element for the boiler of the utility model fully ensures the sealing performance of the sealing furnace door cover through the first sealing defense line and the second sealing defense line; simultaneously with original sealing rubber change for the structure of gasbag and sealed bag, when sealed, make it hug closely second step seal mouth through gasbag extrusion sealed bag and guarantee sealed effect, when opening, retrieve the atmospheric pressure in the sealed bag through the gasbag and make it break away from second step seal mouth and avoid producing wearing and tearing.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the stepped sealing plug in a retracted state;
labeled as: 1. the furnace comprises a furnace wall, 11, a first step sealing opening, 12, a second step sealing opening, 2, a sealing furnace door cover, 21, a sliding chute, 3, a sealing connecting ring, 4, a step sealing plug, 41, the front end of the sealing plug, 42, the tail end of the sealing plug, 43, a sealing bag, 5, a cavity, 51, an air bag, 52, a pressing plate, 6, a telescopic rod, 61, a telescopic rod cover plate, 7, a first sealing ring, 8, a second sealing ring and 9, a third sealing ring.
Detailed Description
As shown in fig. 1-2, a sealing member for a boiler comprises a furnace wall 1, wherein a sealing furnace door cover 2 is hinged and fixed on the front surface of the furnace wall 1, and a first step sealing opening 11 and a second step sealing opening 12 are respectively formed on the inner wall of the furnace wall 1; the lower surface of the sealing furnace door cover 2 is fixedly connected with a sealing connecting ring 3, and the sealing connecting ring 3 is embedded in the first stepped sealing opening 11.
The rear end 42 of the sealing plug is movably embedded in the sliding groove 21; a cavity 5 is arranged in the middle of the stepped sealing plug 4, an air bag 51 is arranged at the bottom of the cavity 5, and a pressing plate 52 for pressing the air bag 51 is arranged at the top of the cavity 5; the outer wall of the front end 41 of the sealing plug is provided with a sealing groove, a sealing bag 43 is embedded in the sealing groove, and the sealing bag 43 is of a hollow structure and is connected to the air bag 51 through a pipeline; the middle part of the sealing furnace door cover 2 is provided with a telescopic rod 6, and the telescopic rod 6 is an electric push rod or an air cylinder; the telescopic rod 6 penetrates into the cavity 5 along the middle parts of the sliding groove 21 and the tail end 42 of the sealing plug and is connected to the pressing plate 52; the top of the sealing furnace door cover 2 is also provided with a telescopic rod cover plate 61.
Further promote the leakproofness, the lower fixed surface of sealed furnace door cover 2 installs first sealing washer 7, and the lower fixed surface of sealed go-between 3 installs second sealing washer 8, and the lower fixed surface of telescopic link apron 61 installs third sealing washer 9.
For safety, a pressure relief pipe is fixedly mounted on the sealing furnace door cover 2, and a pressure relief valve is fixedly mounted on the front surface of the pressure relief pipe.
In the specific embodiment, in the use process, when a boiler needs to be sealed, the boiler wall 1 is covered by rotating the sealing boiler door cover 2 to form a first sealing defense line, then the telescopic rod 6 is driven to push the step sealing plug 4 to slide downwards along the sliding groove 21 so as to plug the second step sealing port 12 to form a second sealing defense line, after the step sealing plug 4 reaches the position, the telescopic rod 6 continues to extend out to push the pressing plate 52 to compress the air bag 51, and the air in the air bag 51 is pressed into the sealing bag 43, so that the sealing performance of the second step sealing port 12 is improved; when needs open sealed furnace door closure 2, through reverse drive telescopic link 6 to open the relief valve and discharge the gas in the boiler to safe atmospheric pressure down, open sealed furnace door closure 2 again, realize convenient to use, and have the effect that double seal effectively improved the boiler leakproofness.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A sealing element for a boiler comprises a furnace wall and is characterized in that a sealing furnace door cover is hinged and fixed on the front side of the furnace wall, and a first step sealing opening and a second step sealing opening are respectively formed in the inner wall of the furnace wall; the lower surface of the sealing furnace door cover is fixedly connected with a sealing connecting ring which is embedded in the first stepped sealing opening; the lower surface of the sealing furnace door cover is provided with a sliding groove, a stepped sealing plug is connected in the sliding groove in a sliding manner, the stepped sealing plug comprises a sealing plug front end and a sealing plug tail end which are integrally formed, the sealing plug front end is used for sealing a second stepped sealing port, and the sealing plug rear end is movably embedded in the sliding groove; a cavity is arranged in the middle of the stepped sealing plug, an air bag is arranged at the bottom of the cavity, and a pressing plate for pressing the air bag is arranged at the top of the cavity; the outer wall of the front end of the sealing plug is provided with a sealing groove, a sealing bag is embedded in the sealing groove, and the sealing bag is of a hollow structure and is connected to the air bag through a pipeline; the middle part of the sealing furnace door cover is provided with a telescopic rod, and the telescopic rod penetrates into the cavity along the middle parts of the sliding chute and the tail end of the sealing plug and is connected to the pressing plate; the top of the sealing furnace door cover is also provided with a telescopic rod cover plate.
2. The sealing member for a boiler according to claim 1, wherein a first gasket is fixedly installed on a lower surface of the sealing door cover.
3. The seal for a boiler according to claim 1, wherein a second sealing ring is fixedly installed on a lower surface of the seal connection ring.
4. The sealing member for a boiler according to claim 1, wherein a third sealing ring is fixedly installed on the lower surface of the telescopic rod cover plate.
5. The sealing element for the boiler as claimed in claim 1, wherein the front end of the sealing plug has a tapered cross section which gradually shrinks from top to bottom, and the front end of the sealing plug is adapted to the second stepped sealing port.
6. The sealing member for the boiler according to claim 1, wherein a pressure relief pipe is further fixedly installed on the sealing furnace door cover, and a pressure relief valve is fixedly installed on the front surface of the pressure relief pipe.
7. The sealing member for a boiler according to claim 1, wherein the telescopic rod is an electric push rod or an air cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022362835.5U CN213479191U (en) | 2020-10-21 | 2020-10-21 | Sealing element for boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022362835.5U CN213479191U (en) | 2020-10-21 | 2020-10-21 | Sealing element for boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213479191U true CN213479191U (en) | 2021-06-18 |
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ID=76367030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022362835.5U Active CN213479191U (en) | 2020-10-21 | 2020-10-21 | Sealing element for boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213479191U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113898755A (en) * | 2021-12-08 | 2022-01-07 | 艾肯（江苏）工业技术有限公司 | Intelligent high-temperature-resistant high-pressure-resistant leakage-proof sleeve adjusting valve |
| CN114322312A (en) * | 2021-11-27 | 2022-04-12 | 无锡锡成锅炉有限公司 | Boiler cover with stable fixed connection and good sealing effect |
-
2020
- 2020-10-21 CN CN202022362835.5U patent/CN213479191U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114322312A (en) * | 2021-11-27 | 2022-04-12 | 无锡锡成锅炉有限公司 | Boiler cover with stable fixed connection and good sealing effect |
| CN113898755A (en) * | 2021-12-08 | 2022-01-07 | 艾肯（江苏）工业技术有限公司 | Intelligent high-temperature-resistant high-pressure-resistant leakage-proof sleeve adjusting valve |
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