CN101487533B - Leak stopping method and apparatus for special-shaped sealing surface under temperature and pressure - Google Patents
Leak stopping method and apparatus for special-shaped sealing surface under temperature and pressure Download PDFInfo
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- CN101487533B CN101487533B CN2009100738236A CN200910073823A CN101487533B CN 101487533 B CN101487533 B CN 101487533B CN 2009100738236 A CN2009100738236 A CN 2009100738236A CN 200910073823 A CN200910073823 A CN 200910073823A CN 101487533 B CN101487533 B CN 101487533B
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Abstract
The invention provides a plugging method with temperature and pressure for an exotic sealing face and a plugging device thereof. In the invention, a sealing basal body is provided with an exotic face and supported by a frame-shaped sealing structure member, the upper end of the sealing structure member is tightly pressed against the sealing body and the lower end thereof is closely contacted with the sealing basal body by a lower self-sealing soft metal plate, one end of the upper self-sealing soft metal plate is weld on the frame-shaped sealing structure member, the non welding end is closely contacted with the sealing basal body, a sealing glue room is formed between the sealing body and the sealing basal body, a sealing room is formed between the frame-shaped sealing structure member and the sealing basal body, an glue injecting hole is arranged on the sealing body, and the plugging is carried out by injecting sealing glue into the sealing glue room from the glue injecting hole. The plugging method and plugging device of the invention adopt a two-stage self-sealing structure, have high sealing reliability, are applicable to plugging with temperature and pressure for high temperature and pressure system and equipment, and have low requirement for sealing structure member material, low sealing glue consumption and low plugging cost.
Description
Technical field
The invention belongs to the band temperate zone and press the leakage stopping technology field, blocking method and leakage-baffling device when being specifically related to polymorphic structure sealing face leakage under a kind of High Temperature High Pressure.
Background technique
In flow such as electric power, chemical industry, has the phenomenon of the sealing face leakage of polymorphic structure through regular meeting.For the lower low-pressure low-temperature system of leakage point pressure and temperature, or polymorphic structure is simpler, the leak position of being convenient to operate, can adopt blocking method shown in Figure 1, be about in the leakage point slit between a wedge shape soft metal seal structural part 5 insertion seals 1 and the sealing matrix 2, and hole for injecting glue 3 is set on seal 1, in the sealer chamber 4 of new formation, inject sealer by hole for injecting glue 3 and carry out leak stopping.
Because not of uniform size the causing of surface of contact of seal structural part 7 both sides, wedge shape soft metal among Fig. 1, discontinuity easily to the little lateral bending song of surface of contact, is destroyed sealing.Therefore, this blocking method can't be in the High Temperature High Pressure system, or polymorphic structure is complicated, and use the leak position that is not easy to operate.
Another kind for the polymorphic structure sealing surface is used blocking method always as shown in Figure 2, adopts clamping bolt 6 that a seal structural part 5 is pressed on the seal 1, and keep in touch with sealing matrix 2 underpart of seal structural part 5, forms a sealing surface.Inject sealer by hole for injecting glue 3 to the sealer chamber 4 of new formation then.
The sealing surface pressing that forms between seal structural part 5 underparts of this blocking method and the sealing matrix 2 is not too tight, and seal structural part 5 is subjected to very big outward pressure, is out of shape greatlyyer, so this blocking method also is not suitable for the leak stopping of High Temperature High Pressure system.
On the polymorphic structure sealing surface, can also adopt another kind of blocking method as shown in Figure 3.This method is to have increased a selfsealings soft metal sheet 7 on the basis of Fig. 2, and being welded to connect of reliable sealing adopted in an end of this selfsealings soft metal sheet 7 and the underpart of seal structural part 5, and the other end stretches in the sealer chamber 4.Under the pressure effect of sealer chamber 4, selfsealings soft metal sheet 7 is compressed with sealing matrix 2 securely, forms the sealing surface that a sealing contact surface is long-pending greatly, contact force is big.Simultaneously, because the stiction of selfsealings soft metal sheet 7 is applied to the underpart of seal structural part 5, make that the two ends of seal structural part 5 are stressed, diastrophic moment of flexure reduces, and amount of deformation reduces, and the reliability of sealing improves.
More preceding two methods of this blocking method can improve the heat resisting and pressure resisting ability of sealing, but because sealing structural member 5 is big with the forward area of contact of leakage point, according to fluid mechanics principle, under same pressure, seal structural part 5 will be subjected to bigger outward pressure.In addition, because the mechanical strength of material significantly descends with the rising of temperature, so the requirement of 5 pairs of materials of sealing structural member is very high, this method for higher temperature and more the leak stopping of high pressure system be uneconomical also dangerous.Moreover though this blocking method can reduce the requirement to seal structure complex, 4 spaces, sealer chamber of its formation are very big, and consumption glue amount is too high.
Summary of the invention
The purpose of this invention is to provide and a kind ofly be suitable for temperate zone pressing system sealing, the seal structural part material is required low, the few polymorphic structure sealing surface blocking method of sealer chamber consumption glue amount.
A kind of stifled dew device that is used for above-mentioned blocking method is provided, and is another goal of the invention of the present invention.
The present invention adopts following method to press special-shaped sealing surface to carry out leak stopping to the band temperate zone:
The bottom of a rigid seal structural member is supported on the following surface of contact of the sealing matrix with Special-Shaped Surface, and the upper end is fixed on the seal, and inserts a following selfsealings soft metal sheet between the following surface of contact of seal structural part and sealing matrix; Be connected with selfsealings soft metal sheet in seal structural part, selfsealings soft metal sheet contacts with the last surface of contact of sealing matrix on this, and the region separation in the seal structural part is become sealer chamber and closed chamber; Hole for injecting glue is set on seal, carries out leak stopping to the indoor injection sealer of sealer from hole for injecting glue.
Wherein, described sealer chamber is surface of contact, seal on the sealing matrix, goes up the zone that forms between selfsealings soft metal sheet and the seal structural part, and described closed chamber is to go up the zone that forms between selfsealings soft metal sheet, sealing matrix and the seal structural part.
Described seal structural part is designed to a shaped as frame seal structural part, with the resistance to flexure of raising seal structural part, and makes the sealer chamber of formation and the volume minimum of closed chamber.
The present invention also provides a kind of leakage-baffling device that above-mentioned blocking method uses that is suitable for, this leakage-baffling device is by a sealing matrix with Special-Shaped Surface, seal on the sealing matrix and the shaped as frame seal structural part that is fixed between sealing matrix and the seal constitute, seal is provided with hole for injecting glue, form the sealer chamber between seal and the sealing matrix, one end of last selfsealings soft metal sheet is welded on the shaped as frame position of shaped as frame seal structural part, be welded with selfsealings soft metal sheet down in the underpart of shaped as frame seal structural part, the shaped as frame seal structural part by tightened bolt presses on seal, the non-welding ends of last selfsealings soft metal sheet stretches into the sealer chamber, closely contact with the sealing matrix, the underpart of shaped as frame seal structural part closely contacts with the sealing matrix by following selfsealings soft metal sheet, the shaped as frame position of shaped as frame seal structural part with seal formation vertical seal chamber and horizontal seal chamber between the matrix.
The present invention is provided with supporting element in the inside, shaped as frame position of shaped as frame seal structural part, is provided with intercommunicating pore between vertical seal chamber and horizontal seal chamber.
Band of the present invention temperate zone presses the leakage-baffling device of special-shaped sealing surface to form the first road sealing surface by last selfsealings soft metal sheet, the pressure difference of sealer room pressure and vertical seal room pressure is big more, the sealing impacting force of the first road sealing surface is also big more, has formed first order selfsealings.Between shaped as frame seal structural part and sealing matrix, be provided with vertical seal chamber and horizontal seal chamber, and be communicated with,, reduced the possibility that reveal shaped as frame seal structural part bottom through twice step-down of vertical seal chamber and horizontal seal chamber by intercommunicating pore.Meanwhile, be welded with selfsealings soft metal sheet down in shaped as frame seal structural part underpart, following selfsealings soft metal sheet is pressed on the sealing matrix, form the second road sealing surface, the indoor pressure of horizontal seal is high more, and the sealing of the second road sealing surface is also tight more, has formed second level selfsealings.
Because blocking method of the present invention and leakage-baffling device have adopted the two-stage self sealing structure, and the two-stage selfsealings can strengthen the front and back pressure reduction and the selfsealings ability of another grade when any one-level is leaked, can form complementation well, the sealing reliability height, Security greatly improves, and can be applicable to fully that leak stopping is pressed in the band temperate zone of High Temperature High Pressure system and equipment.
Because the indoor pressure pressure indoor than sealer of vertical seal reduces, thereby the total pressure that acts on the shaped as frame seal structural part reduces, requirement of strength to the shaped as frame seal structural part reduces, owing to the shaped as frame structure comparatively robust of shaped as frame seal structural part, available less material produces bigger composite bending modulus simultaneously.
The shaped as frame structure that shaped as frame seal structural part of the present invention is taked has also greatly reduced the total measurement (volume) of sealer chamber, vertical seal chamber and horizontal seal chamber, make the sealing glue consumption greatly reduce, save the glue consumption of expensive High Temperature High Pressure glue greatly, thereby reduced the leak stopping cost effectively.
Description of drawings
Fig. 1 is the stifled structural representation that reveals device of a kind of existing special-shaped sealing surface;
Fig. 2 is the stifled structural representation that reveals device of another kind of existing special-shaped sealing surface;
Fig. 3 is the stifled structural representation that reveals device of another existing special-shaped sealing surface;
Fig. 4 presses the stifled structural representation that reveals device of special-shaped sealing surface for band of the present invention temperate zone.
Embodiment
Specific embodiments of the present invention is described below:
Preparatory work:
At first, physical dimension according to polymorphic structure sealing face leakage point, produce a shaped as frame seal structural part 5 as shown in Figure 4 by welding or machining, selfsealings soft metal sheet 7 on welding 1 at this shaped as frame seal structural part 5 shaped as frame position as shown in Figure 4 then, 1 following selfsealings soft metal sheet 11 of underpart welding, and 1 intercommunicating pore 9 is set on the inboard legs of underpart, again at the shown position place of shaped as frame seal structural part 5 welding upper supporting piece 12.Simultaneously, on seal 1, pre-set 1 hole for injecting glue 3.
The leak stopping process:
By position shown in Figure 4, the shaped as frame position of shaped as frame seal structural part 5 is assembled between sealing matrix 2 and the seal 1 inwardly, make the non-welding ends of selfsealings soft metal sheet 7 stretch into sealer chamber 4, closely contact with sealing matrix 2, after the underpart of shaped as frame seal structural part 5 is passed through following selfsealings soft metal sheet 11 and sealing matrix 2 is closely contacted, adopt clamping bolt 6 that shaped as frame seal structural part 5 is pressed on the seal 1, its surface of contact forms reliable sealing surface.After installing, between seal 1 and sealing matrix 2, form 1 sealer chamber 4, between the shaped as frame position of shaped as frame seal structural part 5 and sealing matrix 2, form 1 vertical seal chamber 8 and 1 horizontal seal chamber 10 respectively, and be communicated with by intercommunicating pore 9 between vertical seal chamber 8 and the horizontal seal chamber 10.
In the sealer chamber 4 that forms, inject sealer by hole for injecting glue 3, can finish the leak stopping of polymorphic structure sealing face leakage point.
Leak stopping mechanism:
Under the pressure difference effect of sealer chamber 4 internal pressures and vertical seal chamber 8 internal pressures, the diagram left end of last selfsealings soft metal sheet 7 (with the non-welding ends of shaped as frame seal structural part 5) relies on plastic deformation to be pressed on the sealing matrix 2, forms the first road sealing surface.The pressure difference of sealer chamber 4 internal pressures and vertical seal chamber 8 internal pressures is big more, and the first road sealing surface sealing impacting force is also big more, has formed first order selfsealings.
Under the comprehensive function of the pressure difference of the pressure difference of sealer chamber 4 internal pressures and vertical seal chamber 8 internal pressures and sealer chamber 4 internal pressures and horizontal seal chamber 10 internal pressures, make that shaped as frame seal structural part 5 produces resiliently deformable, selfsealings soft metal sheet 11 produces plastic deformation down, the non-welding ends (diagram is the left end of selfsealings soft metal sheet 11 down) of following selfsealings soft metal sheet 9 is pressed on the sealing matrix 2, forms the second road sealing surface.Medium and a small amount of sealer of coming from the first road sealing face leakage at first enter vertical seal chamber 8, enter horizontal seal chamber 10 through the intercommunicating pore 9 on the shaped as frame seal structural part 5 then.Because the pressure of horizontal seal chamber 10 is higher than external pressure, the two pressure difference of the pressure of horizontal seal chamber 10 and external pressure is applied to down on the selfsealings soft metal sheet 11, make that selfsealings soft metal sheet 11 more closely is pressed on the sealing matrix 2 down, pressure in the horizontal seal chamber 10 is high more, seal also closely more, formed second level selfsealings.
The two pressure difference of the pressure of horizontal seal chamber 10 and external pressure also is applied on the shaped as frame seal structural part 5 simultaneously, by shaped as frame seal structural part 5 be welded on its inner supporting element 12 this power is delivered to clamping bolt 6, and finally pass to seal 1, supporting element 12 can transmit power and produce reaction force, avoid the bottom of shaped as frame seal structural part 5 and a side (illustrated right side) the generation distortion of following selfsealings soft metal sheet 11 welding, destroy second level selfsealings.
Claims (7)
1. blocking method of pressing special-shaped sealing surface with the temperate zone, be that bottom with a rigid seal structural member is supported on the following surface of contact of the sealing matrix with Special-Shaped Surface, this rigid seal structural member upper end is fixed on the seal, and inserts a following selfsealings soft metal sheet between the following surface of contact of seal structural part and sealing matrix; Be connected with selfsealings soft metal sheet in seal structural part, selfsealings soft metal sheet contacts with the last surface of contact of sealing matrix on this, and selfsealings soft metal sheet becomes sealer chamber and closed chamber with the region separation in the seal structural part on this; Hole for injecting glue is set on seal, carries out leak stopping to the indoor injection sealer of sealer from hole for injecting glue.
2. the blocking method of special-shaped sealing surface is pressed in band according to claim 1 temperate zone, it is characterized in that described sealer chamber is surface of contact, seal on the sealing matrix, goes up the zone that forms between selfsealings soft metal sheet and the seal structural part.
3. the blocking method of special-shaped sealing surface is pressed in band according to claim 1 temperate zone, it is characterized in that described closed chamber is to go up the zone that forms between selfsealings soft metal sheet, sealing matrix and the seal structural part.
4. the blocking method of special-shaped sealing surface is pressed in band according to claim 1 temperate zone, it is characterized in that described seal structural part is a shaped as frame seal structural part.
5. be used for the described band of claim 1 temperate zone and press the leakage-baffling device of special-shaped sealing surface blocking method, by a sealing matrix (2) with Special-Shaped Surface, the shaped as frame seal structural part (5) that is positioned at the seal (1) on the sealing matrix (2) and is fixed between sealing matrix (2) and the seal (1) constitutes, seal (1) is provided with hole for injecting glue (3), form sealer chamber (4) between seal (1) and the sealing matrix (2), it is characterized in that: an end of going up selfsealings soft metal sheet (7) is welded on the shaped as frame position of shaped as frame seal structural part (5), be welded with selfsealings soft metal sheet (11) down in the underpart of shaped as frame seal structural part (5), shaped as frame seal structural part (5) is pressed on the seal (1) by clamping bolt (6), the non-welding ends of last selfsealings soft metal sheet (7) stretches into sealer chamber (4), closely contact with sealing matrix (2), the underpart of shaped as frame seal structural part (5) closely contacts with sealing matrix (2) by following selfsealings soft metal sheet (11), at the shaped as frame position of shaped as frame seal structural part (5) and seal formation vertical seal chamber (8) and horizontal seal chamber (10) between the matrix (2).
6. leakage-baffling device according to claim 5 is characterized in that being provided with supporting element (12) in the inside, shaped as frame position of shaped as frame seal structural part (5).
7. leakage-baffling device according to claim 5 is characterized in that being communicated with by intercommunicating pore (9) between described vertical seal chamber (8) and horizontal seal chamber (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100738236A CN101487533B (en) | 2009-02-24 | 2009-02-24 | Leak stopping method and apparatus for special-shaped sealing surface under temperature and pressure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100738236A CN101487533B (en) | 2009-02-24 | 2009-02-24 | Leak stopping method and apparatus for special-shaped sealing surface under temperature and pressure |
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| CN101487533A CN101487533A (en) | 2009-07-22 |
| CN101487533B true CN101487533B (en) | 2010-09-29 |
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| CN105772326B (en) * | 2015-12-28 | 2018-06-05 | 沪东重机有限公司 | A kind of glue blocking method between sealed connection face |
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Owner name: SHANXI SANSHENG ENERGY-SAVING ENVIRONMENTAL PROTEC Free format text: FORMER NAME: SHANXI SANHESHENG INDUSTRY TECHNOLOGY CO., LTD. |
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Address after: 030006 Tsinghua Pioneer Park, D hi tech Zone, Shanxi, Taiyuan, 2401 Patentee after: SHANXI SANHESHENG ENERGY SAVING ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. Address before: 030006 Shanxi Province, Taiyuan city high tech Development Zone New Island Technology Park A block 8 layer Patentee before: Shanxi Sanhesheng Industry Technology Co., Ltd. |