CN208265039U - Manhole Sealing Joints structure - Google Patents
Manhole Sealing Joints structure Download PDFInfo
- Publication number
- CN208265039U CN208265039U CN201820796519.9U CN201820796519U CN208265039U CN 208265039 U CN208265039 U CN 208265039U CN 201820796519 U CN201820796519 U CN 201820796519U CN 208265039 U CN208265039 U CN 208265039U
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- Prior art keywords
- manhole
- flange
- backing layer
- line
- mounting portion
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Abstract
The utility model discloses a kind of Manhole Sealing Joints structures, and including the support construction being fixedly connected and closure construction, support construction includes: manhole flange, are fixedly connected with one end of manhole connecting pipe；First backing layer, is arranged on the sealing surface of manhole flange, and extends in manhole connecting pipe；And the first line with rubber layer, it is arranged on manhole connecting pipe inner surface, and at least part extends to the surface of the first backing layer, forms bridging arrangement；Closure construction includes: mounting portion, when capping, is sheathed in manhole flange；Manhole cover flange is fixed on one end of mounting portion, is adapted to manhole flange；Second backing layer is arranged on the sealing surface of manhole cover flange, and extends to mounting portion；And the second line with rubber layer, it is arranged on mounting portion outer surface, and at least part extends to the surface of the second backing layer, forms bridging arrangement.Compared with prior art, the utility model Manhole Sealing Joints structure long service life, sealing effect be good, project cost and installation requirement are low.
Description
Technical field
The utility model belongs to equipment field of sealing technology, and more specifically, the utility model relates to a kind of Manhole Sealing Joints structures.
Background technique
Thermal power plant, nuclear power station middle pressure condensed water precision processing system in, to avoid medium-voltage equipment from corroding in operation, with
And corrosion product pollutes condensed water, generally carries out anti-corrosion using line with rubber inside equipment.Line with rubber anti-corrosion be inside equipment with it is high-purity
After water contact portion lining patch rubber slab, entirety is passed through certain temperature in sulfur still, the steam of pressure makes the vulcanization of rubber, after vulcanization
Offset plate and steel plate between have higher adhesion strength, offset plate is attached to equipment inner surface and contacts with high purity water, is wanted with meeting anti-corrosion
It asks.
Line with rubber, inner member installation, maintenance, the filling of filler, condensate polishing treatment are carried out to equipment for convenience of staff
Medium-voltage equipment ontology is provided with manhole.Since manhole is mounted on condensate polishing treatment medium-voltage equipment ontology, it is therefore desirable to carry out
Preservative treatment, and need to be non-leakage under certain operating pressure, while requiring to guarantee the straightness of manhole and manhole cover faying face,
Phenomenon is turned round without floaing.
The manhole door and manhole cover of existing middle pressure condensed water precision treatment device are by corresponding pressure rating using suitable
Carbon steel is fabricated, and semi-ebonite is lined on inner surface and carries out anti-corrosion, is machined with sealing surface, line with rubber on manhole flange and manhole cover
For the general covering of layer to sealing surface, when installation, is provided with teflon gasket, blending bolt between manhole flange and manhole cover
It is fastened.
But have the defects that certain:
1) manhole flange of medium-voltage equipment, the connection fastening torque of bolt of manhole cover are big, are easily damaged flange sealing surface
Line with rubber layer；
2) line with rubber offset plate hardness is lower than the hardness of teflon gasket, and line with rubber layer is substantially compressed when flange fastens, and
The decrement of gasket but very little after line with rubber layer Repeated Compression, can crack, delamination damage；
3) repeated multiple times dismounting manhole cover is needed in equipment installation, debugging stage, damage sealing surface can be increased after multi-pass operation
The chance of line with rubber layer；
4) after line with rubber layer in Manhole Sealing Joints face locally has fine crack damage, repairing is difficult, and by prior art repairing after
Its local hardness is more than former line with rubber layer, and repairing point is easy to damage again when manhole flange fastens again；
5) manhole flange, manhole cover sealing surface line with rubber damage after can not field repair, can only integrally return factory's line with rubber again, serve as a contrast
Rehabilitation expense is high after glue-line damage, influences big.
In view of this, it is necessory to provide, a kind of structure is simple, long service life, sealing effect are good, project cost and peace
The low Manhole Sealing Joints structure of reload request.
Utility model content
The purpose of this utility model is that: overcome the deficiencies of the prior art and provide a kind of simple structure, long service life,
The Manhole Sealing Joints structure that sealing effect is good, project cost and installation requirement are low.
To achieve the goals above, the utility model provides a kind of Manhole Sealing Joints structure, including the support being fixedly connected
Structure and closure construction, the support construction include:
Manhole flange is fixedly connected with one end of manhole connecting pipe；
First backing layer, is arranged on the sealing surface of manhole flange, and extends in manhole connecting pipe；And
First line with rubber layer is arranged on manhole connecting pipe inner surface, and at least part extends to the surface of the first backing layer,
Form bridging arrangement；
The closure construction includes:
Mounting portion when capping, is sheathed in manhole flange；
Manhole cover flange is fixed on one end of mounting portion, is adapted to manhole flange；
Second backing layer is arranged on the sealing surface of manhole cover flange, and extends to mounting portion；And
Second line with rubber layer is arranged on mounting portion outer surface, and at least part extends to the surface of the second backing layer, shape
At bridging arrangement.
As a kind of improvement of the utility model Manhole Sealing Joints structure, first backing layer is stainless steel structure, with people
Hole flange is formed by soldering stainless steel plate or with stainless steel electrode built-up welding.
As a kind of improvement of the utility model Manhole Sealing Joints structure, the section of first backing layer is L shape, thickness
For 2~5mm.
As a kind of improvement of the utility model Manhole Sealing Joints structure, the first line with rubber layer is offset plate, with a thickness of 2~
5mm。
As a kind of improvement of the utility model Manhole Sealing Joints structure, second backing layer is stainless steel structure, with people
Port lid flange is formed by soldering stainless steel plate or with stainless steel electrode built-up welding.
As a kind of improvement of the utility model Manhole Sealing Joints structure, the section of second backing layer is L shape, thickness
For 2~5mm.
As a kind of improvement of the utility model Manhole Sealing Joints structure, the second line with rubber layer is offset plate, with a thickness of 2~
5mm。
It further include setting in the support construction and capping knot as a kind of improvement of the utility model Manhole Sealing Joints structure
Gasket between structure, the gasket are teflon gasket or SW with outside ring.Compared with the existing technology, the utility model
Manhole Sealing Joints structure has following technical effect that
1) the internal part with media contact is corrosion resistant stainless steel lining inner layer, whole favorable anti-corrosion effect；
2) manhole flange and closure construction sealing surface are all-metal structure, and sealing surface will not be in closure construction repeated disassembled and assembled
Damage, long service life；
3) stainless steel lining inner layer is corrosion-resistant, without leachable pollution medium in operation；
4) lining patch stainless steel art is simple, reprocesses sealing surface after the general lining patch using welding；
5) line with rubber layer is overlapped to stainless steel lining inner layer, and whole antiseptic property is good.
Detailed description of the invention
With reference to the accompanying drawings and detailed description, to the utility model Manhole Sealing Joints structure and its advantageous effects into
Row is described in detail, in which:
Fig. 1 is the structural schematic diagram of support construction in the utility model Manhole Sealing Joints structure.
Fig. 2 is the structural schematic diagram of closure construction in the utility model Manhole Sealing Joints structure.
Attached drawing mark
10- support construction；100- manhole flange；1000- sealing surface；102- manhole connecting pipe；The first backing layer of 104-；106-
First line with rubber layer；
20- closure construction；200- mounting portion；202- manhole cover flange；2020- sealing surface；The second backing layer of 204-；206-
Second line with rubber layer.
Specific embodiment
In order to be more clear the purpose of this utility model, technical solution and advantageous effects, below in conjunction with attached drawing and
Specific embodiment, the present invention will be further described in detail.It should be understood that described in this specification specific
Embodiment is intended merely to explain the utility model, is not intended to limit the utility model.
It please refers to shown in Fig. 1 and Fig. 2, the utility model Manhole Sealing Joints structure includes the support construction 10 being fixedly connected and envelope
Lid structure 20, and the gasket (not shown go out) being arranged between support construction 10 and closure construction 20, support construction 10 includes:
Manhole flange 100 is fixedly connected with one end of manhole connecting pipe 102；
First backing layer 104, is arranged on the sealing surface 1000 of manhole flange 100, and extends in manhole connecting pipe 102；
And
First line with rubber layer 106 is arranged on 102 inner surface of manhole connecting pipe, and at least part extends to the first backing layer
104 surface forms bridging arrangement；
Closure construction 20 includes:
Mounting portion 200 when capping, is sheathed in manhole flange 100；
Manhole cover flange 202 is fixed on one end of mounting portion 200, is adapted to manhole flange 100；
Second backing layer 204, is arranged on the sealing surface 2020 of manhole cover flange 202, and extends to mounting portion 200；With
And
Second line with rubber layer 206 is arranged on 200 outer surface of mounting portion, and at least part extends to the second backing layer 204
Surface, formed bridging arrangement.
Refering to Figure 1, in the shown embodiment, Manhole Sealing Joints structure is predominantly middle to press condensed water precision treatment device
Manhole Sealing Joints structure, manhole connecting pipe 102 be fixed by welding in it is middle pressure condensed water precision treatment device manhole position.
Manhole flange 100 is common manhole flange, is generally manufactured using carbon steel, has certain diameter, and diameter is big
In the diameter of manhole connecting pipe 102, usually DN400 or the above aperture.
It is provided with fixation hole on manhole flange 100, is fixed by bolt with the manhole cover flange 202 being adapted to, finally
Support construction 10 and closure construction 20 are fixed.
First backing layer 104 is stainless steel plate structure, and section is L shape, and vertical portion is cylindrical structure, and and manhole flange
100 inner wall is welded to connect, and extends to 102 inner surface of manhole connecting pipe, at least a part of 102 inner surface of covering manhole connecting pipe
Bridging arrangement is formed with the first line with rubber layer 106, in the provisioning process, need to guarantee certain bonding area, guarantee bonding strength, together
When with 102 inner surface of manhole connecting pipe be welded to connect.Horizontal part is circular ring structure, at least a part of to be covered on manhole flange 100
Sealing surface 1000 on, select width appropriate according to actual needs, and be welded to connect with sealing surface 1000, in fastening, the
The horizontal part structure of one backing layer 104 is located at gasket (not shown go out) lower part.Since the first backing layer 104 is stainless steel structure,
Sealing surface hardness is significantly larger than gasket (teflon gasket), and compression gasket when manhole flange 100 fastens, repeated disassembled and assembled is not
Sealing surface can be damaged, only need to replace gasket when gasket damages.
First backing layer 104 can also carry out lining patch using techniques such as stainless steel electrode built-up welding and be formed.Further,
One backing layer 104 with a thickness of 2~5mm, preferably 3mm.
First line with rubber layer 106 is offset plate, and preferred rubber plate is mainly covered on the inner surface of manhole connecting pipe 102, and at least
Some is covered on the vertical portion of the first backing layer 104, but cannot extend to the horizontal part of the first backing layer 104, only needs
Form certain overlap joint interface, the first line with rubber layer 106 with a thickness of 2~5mm, preferably 3mm.
It please refers to shown in Fig. 2, in the shown embodiment, closure construction 20 is mainly manhole cover, and manhole cover flange 202 is
Common manhole cover flange, is manufactured using carbon steel, and manhole cover flange 202 is matched with manhole flange 100, on manhole cover flange 202
It is provided with fixation hole, when capping, manhole cover flange 202 is bolted to connection with manhole flange 100.
Manhole cover flange 202 is fixedly connected with mounting portion 200, and when capping, mounting portion 200 is set in manhole flange 100,
The outer diameter of mounting portion 200 is slightly less than the aperture of manhole flange 100, and mounting portion 200 is hollow structure.
Second backing layer 204 is stainless steel plate structure, and section is L shape, and vertical portion is cylindrical structure, at least a part of edge
Mounting portion 200 outer surface extend, and with the outer surface of mounting portion 200 be welded to connect, for guarantee weld strength, according to reality
The bonding area that situation setting needs.Horizontal part is circular ring structure, at least a part of sealing for being covered on manhole cover flange 202
On face 2020, width appropriate is selected according to actual needs, and be welded to connect with sealing surface 2020.
In fastening, the horizontal part structure of the second backing layer 204 be located at gasket (out not shown) and manhole cover flange 202 it
Between.Since the second backing layer 204 is stainless steel structure, sealing surface hardness is significantly larger than gasket (teflon gasket), manhole
Compression gasket when lid flange 202 fastens, repeated disassembled and assembled will not damage sealing surface, only need to replace gasket when gasket damages.
Second backing layer 204 can also carry out lining patch using techniques such as stainless steel electrode built-up welding and be formed.Further,
Two backing layers 204 with a thickness of 2~5mm, preferably 3mm.
Second line with rubber layer 206 is offset plate, and preferred rubber plate is fitted around the outer surface fixed setting in portion 200, and is installing
Portion 200 is also equipped with the second line with rubber layer 206 on the outer surface far from manhole cover flange 202, prevent 200 carbon steel ontology of mounting portion with
Physical contact between media, at least a part of surface for extending to the second backing layer 204 of the second line with rubber layer 206 form bridging arrangement,
Can be with the horizontal part of the second line with rubber of infinite approach layer 206, but cannot be covered on horizontal part.Second line with rubber layer 206 with a thickness of 2
~5mm, preferably 3mm.
In the shown embodiment, gasket is teflon gasket or SW with outside ring, preferably polytetrafluoroethylene pad
Piece.
The utility model Manhole Sealing Joints structure installation process is as follows: 1) welding lining patch in 100 sealing surface 1000 of manhole flange
Section is L-shaped the first backing layer of stainless steel 104, and extends to 102 inner surface of manhole connecting pipe, in manhole when equipment entirety line with rubber
102 the first line with rubber of inner surface lining layer 106 of adapter tube, and on at least a part of vertical portion for extending to the first backing layer 104, it is formed
Bridging arrangement；2) welding lining patch section in 202 sealing surface 2020 of manhole cover flange is L-shaped the second backing layer of stainless steel 204, and
200 outer surface of mounting portion is extended to, serves as a contrast the second line with rubber layer 204 in 200 outer surface of mounting portion, and at least a part of extends to the
On the vertical portion of two backing layers 204, bridging arrangement is formed；3) with lathe to the sealing surface 1000 and manhole cover of manhole flange 100
The sealing surface 2020 of flange 202 reach after being processed flange surface requirement, support construction 10 again with equipment carry out welding assembly,
Line with rubber, closure construction 20 carry out line with rubber.Support construction 10 and the gasket of closure construction 20, bolt are attached solid after the completion of line with rubber
It is fixed.
It should be noted that, although the utility model Manhole Sealing Joints structure is mainly used in middle pressure condensed water precision treatment device
Manhole position, but in other embodiments, it can also be applied to that the flange seal of the heavy caliber rubber lined pipe of flanged joint need to be used
In structure.
Compared with the existing technology, the utility model Manhole Sealing Joints structure has following technical effect that
1) the internal part with media contact is corrosion resistant stainless steel lining inner layer, whole favorable anti-corrosion effect；
2) manhole flange and closure construction sealing surface are all-metal structure, and sealing surface will not be in closure construction repeated disassembled and assembled
Damage, long service life；
3) stainless steel lining inner layer is corrosion-resistant, without leachable pollution medium in operation；
4) lining patch stainless steel art is simple, general to be using welding lining patch or stainless steel electrode heap postwelding reprocessing sealing surface
It can；
5) line with rubber layer is overlapped to stainless steel lining inner layer, and whole antiseptic property is good.
According to above-mentioned principle, the utility model can also carry out change and modification appropriate to above-mentioned specific embodiment.
Therefore, the utility model is not limited to specific embodiment disclosed and described above, some modifications to the utility model
It should also be as falling into the protection scope of the claims of the present utility model with change.In addition, although having used one in this specification
A little specific terms, these terms are merely for convenience of description, does not constitute any restrictions to the utility model.
Claims (8)
1. a kind of Manhole Sealing Joints structure, which is characterized in that including the support construction being fixedly connected and closure construction, the support knot
Structure includes:
Manhole flange is fixedly connected with one end of manhole connecting pipe；
First backing layer, is arranged on the sealing surface of manhole flange, and extends in manhole connecting pipe；And
First line with rubber layer is arranged on manhole connecting pipe inner surface, and at least part extends to the surface of the first backing layer, is formed
Bridging arrangement；
The closure construction includes:
Mounting portion when capping, is sheathed in manhole flange；
Manhole cover flange is fixed on one end of mounting portion, is adapted to manhole flange；
Second backing layer is arranged on the sealing surface of manhole cover flange, and extends to mounting portion；And
Second line with rubber layer is arranged on mounting portion outer surface, and at least part extends to the surface of the second backing layer, and formation is taken
Binding structure.
2. Manhole Sealing Joints structure according to claim 1, which is characterized in that first backing layer is stainless steel structure,
It is formed with manhole flange by soldering stainless steel plate or with stainless steel electrode built-up welding.
3. Manhole Sealing Joints structure according to claim 1, which is characterized in that the section of first backing layer is L shape,
With a thickness of 2~5mm.
4. Manhole Sealing Joints structure according to claim 1, which is characterized in that the first line with rubber layer is offset plate, thickness
For 2~5mm.
5. Manhole Sealing Joints structure according to claim 1, which is characterized in that second backing layer is stainless steel structure,
It is formed with manhole cover flange by soldering stainless steel plate or with stainless steel electrode built-up welding.
6. Manhole Sealing Joints structure according to claim 1, which is characterized in that the section of second backing layer is L shape,
With a thickness of 2~5mm.
7. Manhole Sealing Joints structure according to claim 1, which is characterized in that the second line with rubber layer is offset plate, thickness
For 2~5mm.
8. Manhole Sealing Joints structure according to claim 1, which is characterized in that further include being arranged in the support construction and envelope
Gasket between lid structure, the gasket are teflon gasket or SW with outside ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820796519.9U CN208265039U (en) | 2018-05-25 | 2018-05-25 | Manhole Sealing Joints structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820796519.9U CN208265039U (en) | 2018-05-25 | 2018-05-25 | Manhole Sealing Joints structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208265039U true CN208265039U (en) | 2018-12-21 |
Family
ID=64685625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820796519.9U Active CN208265039U (en) | 2018-05-25 | 2018-05-25 | Manhole Sealing Joints structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208265039U (en) |
-
2018
- 2018-05-25 CN CN201820796519.9U patent/CN208265039U/en active Active
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