Pressure-resistant and leakage-proof boiler through-wall pipe sealing assembly

Abstract

The utility model discloses a pressure-resistant leakage-proof boiler through-wall pipe sealing assembly which comprises a wall body, a through hole is formed in the wall body, a through-wall pipe of a boiler is arranged in the through hole, a top cover is connected to the upper side of the through hole in a clamped mode, the lower side of the top cover is connected with internal threads of a bottom cover through external threads, an annular threaded groove is formed in the lower side of the top cover, and the threaded groove is connected with a lower sealing cover through threads. The upper side of the top cover is connected with an upper sealing cover through internal threads, the upper side and the lower side of the top cover are both provided with slits for containing sealing filler, the top of a lower sealing cover is pressed on the sealing filler below, the upper side of the bottom cover is connected with an elastic ring in a sleeved mode, and a winding rope is wound on the outer side of the elastic ring. And meanwhile, final locking is conducted through the winding rope, operation is easy, pressure resistance and leakage prevention are achieved, and the integrity is good through upper and lower cover closing.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of wall pipe sealing technical field, specifically a kind of pressure-resistant leakproof boiler wall pipe sealing assembly. BACKGROUND

[0002] High-temperature flue gas in the boiler flue is positive pressure, when there is wall pipe to go out furnace wall, the sealing of this part must be done, ensure that high-temperature flue gas does not leak, prevent the influence to the safe operation of boiler.Due to the structural characteristics of vertical gas turbine waste heat boiler, part of wall pipe occurs three-way free expansion, and three-way expansion displacement is larger, this kind of sealing has been a difficult problem, metal expansion joint is not applicable in this state, because metal expansion joint can only absorb axial expansion and slight radial expansion, and when other sealing structures are used, it is difficult to ensure that high-pressure flue gas does not leak, and it is difficult to ensure the safety of boiler operation personnel.

[0003] Chinese patent discloses vertical waste heat boiler wall pipe sealing device, (grant announcement number CN 206175833U), the patent technology can, because heat preservation interface and heat preservation cylinder are connected by skin, relative movement can be realized, the problem of wall pipe three-phase expansion is solved, but its integrity is poor, and there is lack of pressure outside when filling seal, and the sealing effect needs to be improved.Therefore, the utility model provides a kind of pressure-resistant leakproof boiler wall pipe sealing assembly to solve the problems raised in the above background technology. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of pressure-resistant leakproof boiler wall pipe sealing assembly to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A kind of pressure-resistant leakproof boiler wall pipe sealing assembly, including wall, wall is equipped with through-hole, through-hole is equipped with the wall pipe of boiler, the upper side of through-hole is clamped with top cover, the inner thread of bottom cover is connected by outer thread on the lower side of top cover, the lower side of top cover is equipped with annular thread groove, thread groove is connected lower cover by thread, the upper side of top cover is connected upper cover by inner thread, the upper and lower sides of top cover are equipped with the slit of accommodating sealing filler, the top of lower cover is pressed on lower sealing filler;

[0007] The top cover is covered on through-hole, the lower side of lower sealing filler is conical shape with gradually thickening thickness, is respectively extruded on lower cover and bottom cover, the upper side of lower sealing filler is circular tube, inner side is extruded on wall pipe, outer side is extruded on bottom cover, and elastic sealing is carried out, the upper side of bottom cover is sleeved with elastic ring, and the outer side of elastic ring is wound with winding rope, and the outer end of winding rope is fixed on the positioning rod of bottom cover.

[0008] Preferably, the inner side of the lower cover is clamped with a sealing ring, and the inner side of the sealing ring is pressed on the through-wall pipe.

[0009] Preferably, the lower side of the top cover is provided with a plurality of concentric extrusion rings.

[0010] Preferably, the outer side of the top cover is provided with a suspended outer edge to avoid water directly falling into the gap from above.

[0011] Preferably, the outer side of the top cover is in the shape of a circular truncated cone, and the side inclined surface is provided with a plurality of annular grooves to slow down the flow of falling water.

[0012] Preferably, the outer side of the bottom cover is flush with the outer side of the top cover.

[0013] Preferably, the sealing filler is thermal insulation cotton.

[0014] Preferably, the winding rope is a ceramic fiber rope.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] 1. The utility model seals through the sealing filler, absorbs elastic deformation, and finally locks through the winding rope, so that the operation is simple, pressure resistance is good, and leakage is prevented.

[0017] 2. The utility model is good in integrity through the upper and lower covers. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is a structural schematic view of a pressure-resistant and leakage-proof boiler through-wall pipe sealing assembly.

[0019] Fig. 2 It is a split structural schematic view of a pressure-resistant and leakage-proof boiler through-wall pipe sealing assembly.

[0020] Fig. 3 It is a sectional structural schematic view of a pressure-resistant and leakage-proof boiler through-wall pipe sealing assembly.

[0021] In the drawing: 1, wall body; 2, through-wall pipe; 3, top cover; 4, bottom cover; 5, upper cover; 6, lower cover; 7, elastic ring; 8, winding rope; 9, positioning rod; 10, sealing ring; 11, extrusion ring; 12, sealing filler. DETAILED DESCRIPTION

[0022] The technical scheme 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 protection scope of the utility model.

[0023] Please refer to Figs. 1-3 The utility model discloses a kind of pressure-resistant leakproof boiler wall pipe sealing assemblies, including wall 1, wall 1 is equipped with through hole, through hole is equipped with the wall pipe 2 of boiler, the upper side of through hole is clamped with top cover 3, the lower side of top cover 3 is connected with the internal thread of bottom cover 4 by external thread, the lower side of top cover 3 is equipped with annular thread groove, thread groove is connected lower cover 6 by thread, the upper side of top cover 3 is connected with upper cover 5 by internal thread, the upper and lower sides of the top cover 3 are equipped with slit accommodating sealing filler 12, the top of lower cover 6 is pressed on lower sealing filler 12, the inner side of lower cover 6 is clamped with sealing ring 10, the inner side of sealing ring 10 is pressed on wall pipe 2;

[0024] The top cover 3 is covered on through hole, the lower side of top cover 3 is equipped with several concentric extrusion rings 11, the outer side of top cover 3 is equipped with overhanging rim, avoid water directly from above falling into gap, the outer side of top cover 3 is circular platform, side inclined plane is equipped with several layers annular grooves, slow down the flow of falling water, the outer side of bottom cover 4 is flush with the outer side of top cover 3, the lower side of lower sealing filler 12 below is conical, is extruded on lower cover 6 and bottom cover 4 respectively, the upper side of lower sealing filler 12 below is circular tube, inner side is extruded on wall pipe 2, outer side is extruded on bottom cover 4, carries out elastic sealing, the upper side of bottom cover 4 is sleeved with elastic ring 7, the outer side of elastic ring 7 is wound with winding rope 8, the outer end of winding rope 8 is fixed on the positioning rod 9 of bottom cover 4, the sealing filler 12 is thermal insulation cotton, the winding rope 8 is ceramic fiber rope.

[0025] The working principle of the utility model is: when using, cover top cover 3 on through hole, rotate bottom cover 4 from below, extrude elastic ring 7 on gap, then fill sealing filler 12, rotate upper cover 5 on upper side, complete upper side sealing, rotate lower cover 6 on lower side, complete lower side sealing, finally, winding rope 8 is wound on the outer side of elastic ring 7, end is fixed on positioning rod 9, complete overall fixation, carry out pressure-resistant leakproof construction to the gap of wall pipe 2 and wall 1.

[0026] The above, only for the preferred specific implementation mode of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art in the technical range disclosed by the utility model, according to the technical scheme and the inventive concept of the utility model are equivalent to replace or change, should be covered in the protection scope of the utility model.

Claims

1. A pressure-tight and leak-tight boiler penetration seal assembly comprising a wall (1) provided with a through hole, in which a boiler penetration (2) is arranged, characterized in that The upper side of the through hole is clamped with a top cover (3), the lower side of the top cover (3) is connected with the inner thread of the bottom cover (4) through the outer thread, the lower side of the top cover (3) is provided with an annular thread groove, the thread groove is connected with the lower cover (6) through the thread, the upper side of the top cover (3) is connected with the upper cover (5) through the inner thread, the upper and lower sides of the top cover (3) are provided with slits accommodating sealing fillers (12), and the top of the lower cover (6) is pressed on the lower sealing filler (12). The top cover (3) covers the through hole, the lower side of the lower sealing filler (12) is conical with gradually increasing thickness, is pressed on the lower cover (6) and the bottom cover (4) respectively, the upper side of the lower sealing filler (12) is circular tube, the inner side is pressed on the through-wall pipe (2), the outer side is pressed on the bottom cover (4), and elastic sealing is carried out, the upper side of the bottom cover (4) is sleeved with an elastic ring (7), the outer side of the elastic ring (7) is wound with a winding rope (8), and the outer end of the winding rope (8) is fixed on the positioning rod (9) of the bottom cover (4).

2. A pressure retaining leak-free boiler penetration seal assembly according to claim 1, wherein, The inner side of the lower cover (6) is clamped with a sealing ring (10), and the inner side of the sealing ring (10) is pressed on the through-wall pipe (2).

3. A pressure retaining, leak resistant boiler penetration seal assembly according to claim 1, wherein, The lower side of the top cover (3) is provided with a plurality of concentric extrusion rings (11).

4. A pressure retaining, leak resistant boiler penetration seal assembly according to claim 1, wherein, The outer side of the top cover (3) is provided with a suspended outer edge.

5. A pressure retaining, leak resistant boiler penetration seal assembly according to claim 1, wherein, The outer side of the top cover (3) is circular truncated cone, and the side inclined surface is provided with a plurality of layers of annular grooves.

6. A pressure retaining, leak resistant boiler penetration seal assembly according to claim 1, wherein, The outer side of the bottom cover (4) is flush with the outer side of the top cover (3).

7. A pressure retaining, leak resistant boiler penetration seal assembly according to claim 1, wherein, The sealing filler (12) is thermal insulation cotton.

8. A pressure retaining, leak resistant boiler penetration seal assembly according to claim 1, wherein, The winding rope (8) is a ceramic fiber rope.

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