CN110553107A - Inner ring type large-caliber flange sealing surface protection device - Google Patents
Inner ring type large-caliber flange sealing surface protection device Download PDFInfo
- Publication number
- CN110553107A CN110553107A CN201910770839.6A CN201910770839A CN110553107A CN 110553107 A CN110553107 A CN 110553107A CN 201910770839 A CN201910770839 A CN 201910770839A CN 110553107 A CN110553107 A CN 110553107A
- Authority
- CN
- China
- Prior art keywords
- flange
- hole
- support ring
- sealing surface
- fixing screws
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
- F16L23/22—Flanged joints characterised by the sealing means the sealing means being rings made exclusively of a material other than metal
Abstract
The invention discloses an inner ring type large-diameter flange sealing surface protection device, wherein an inner support ring is arranged in a through hole of a flange, the central axis of the inner support ring is coaxially arranged with the flange along the horizontal direction, a plurality of support ring fixed connecting blocks and expansion fixing screws are also arranged in the through hole of the flange, each support ring fixed connecting block is connected with a support ring, the support ring fixed connecting blocks are provided with locking holes allowing the corresponding expansion fixing screws to be screwed in, the expansion fixing screws are screwed in the locking holes and abut against the inner wall of the through hole, the inner support ring is provided with positioning holes allowing each locking nut to be screwed in along the horizontal direction, a flange protection cover is of a circular structure, the radius of the flange protection cover is larger than that of the through hole, and the locking nuts penetrate through the flange protection cover and are screwed in the positioning holes.
Description
Technical Field
The invention relates to the technical field of flange sealing, in particular to an inner ring type large-caliber flange sealing surface protection device.
Background
Before the pipeline is coated and painted, the surface of a single pipe of the process pipeline needs to be subjected to sand blasting treatment so as to enable the pipeline to meet the coating requirement. However, the flange sealing surface of the flange orifice of the single pipeline is easily damaged by abrasive in the process of sand blasting the outer surface of the pipeline; the abrasive easily enters the interior of the process pipeline from the open flange, so that the inner wall of the process pipeline is polluted; and because the pipeline abrasive needs to be cleaned after sand blasting, a large amount of manpower and material resources are wasted, and the pipeline abrasive is not easy to clean.
Meanwhile, in the links of pipeline transportation, storage and installation construction, the flange surface is easily collided with and scratched by external hard objects or corroded and damaged by natural rainwater, so that high flange surface repairing cost is caused.
In order to overcome the above disadvantages, the flanged pipe orifice of the pipeline is usually sealed by using a plastic pipe cap protection pipe or using a rubber or canvas during the pipeline painting and painting, transportation, storage and installation. However, the material is easy to fall off, lose or grind during the prefabrication and transportation process of the pipe orifice of the pipeline flange and cannot be recycled and reused; meanwhile, the abrasive is easy to be damaged by high-speed and high-pressure abrasive during sand blasting; this not only makes subsequent surface treatment and coating difficult, but also damages the flange seal surface. Thus, a high cost for repairing the flange face is incurred.
Disclosure of Invention
The present invention is intended to solve the above technical problems to some extent.
In view of the above, the present invention provides an inner ring type large-diameter flange sealing surface protection device, which prevents external impurities from entering a pipe connected by a flange to cause pollution, and simultaneously protects a cover of the flange.
In order to solve the technical problem, the invention provides an inner ring type large-diameter flange sealing surface protection device which is arranged on a flange, wherein the axis of a through hole of the flange is arranged along the horizontal direction, the inner ring type large-diameter flange sealing surface protection device comprises a flange protection cover, an inner support ring, a plurality of support ring fixed connection blocks, a plurality of expansion fixing screws and a plurality of locking nuts, the expansion fixing screws correspond to the support ring fixed connection blocks one by one, the inner support ring is arranged in the through hole of the flange, the central axis of the inner support ring is coaxially arranged with the flange along the horizontal direction, the support ring fixed connection blocks and the expansion fixing screws are also arranged in the through hole of the flange, each support ring fixed connection block is connected with the support ring, the support ring fixed connection blocks are provided with locking holes allowing the corresponding expansion fixing screws to be screwed in, and the expansion fixing screws are screwed in the locking holes and abut against the, the inside support ring sets up along the horizontal direction and allows every the locating hole of lock nut screw in, the flange protective cover is circular structure and radius and is greater than the through-hole, lock nut passes flange protective cover screw in the locating hole.
Furthermore, lock nut has a plurality ofly, and a plurality of lock nut uses the axis of through-hole is the central line, follows angular distribution such as flange protective cover.
Furthermore, the number of the locking nuts is two, and the two locking nuts are symmetrically arranged along the axis of the through hole.
Furthermore, the expansion fixing screws are multiple, and the multiple expansion fixing screws are uniformly distributed along the inner wall of the through hole by taking the axis of the through hole as a central line.
Furthermore, the expansion fixing screws are two and are symmetrically arranged along the axis of the through hole.
Further, the flange protective cover with be equipped with the silica gel protection pad between the front cover of flange.
Further, the outer contour line of silica gel protection pad with the outer contour line of flange protective cover is the same.
Further, still including the supplementary dog of installation, the supplementary dog of installation with flange protective cover fixed connection, just the supplementary dog of installation with the inner wall of through-hole is laminated mutually.
Further, a flat washer is fixed to the exterior of each lock nut.
The invention has the technical effects that: the expansion fixing screws are installed on the support ring fixing connection blocks, each support ring fixing connection block is connected with the support ring and is integrally plugged into the through hole, the inner support rings are kept equidistant to the inner wall of the through hole along the circumferential direction, the expansion fixing screws are screwed to fix the whole inner support rings onto the inner wall of the through hole to form firm and reliable fixation, the locking nuts are screwed to enable the whole large-size flange protective cover 1 to be tightly attached to the flange sealing surface to play an effective protection role, external sundries are prevented from entering the flange connection pipe to cause pollution, and the cover of the flange is protected.
Drawings
Fig. 1 is a schematic structural diagram of a sealing surface protection device of an inner ring type large-caliber flange according to the invention.
Wherein, 1-flange protective cover; 2-silica gel protective pad; 3-an inner support ring; 4-supporting the ring to fix the connecting block; 5, expanding and fastening the fixing screw; 6-locking the nut; 7-a flat washer; and 8, installing an auxiliary stop block.
Detailed Description
The present invention is further described with reference to the following drawings and specific examples so that those skilled in the art can better understand the present invention and can practice the present invention, but the examples are not intended to limit the present invention.
As shown in figure 1, an inner ring type large-diameter flange sealing surface protection device is arranged on a flange, the axis of a through hole of the flange is arranged along the horizontal direction, and comprises a flange protection cover 1, an inner support ring 3, a plurality of support ring fixed connection blocks 4, a plurality of expansion fixing screws 5 and a plurality of locking nuts 6, wherein the support ring fixed connection blocks 4 correspond to the support ring fixed connection blocks 4 one by one, the inner support ring 3 is arranged in the through hole of the flange, the central axis of the inner support ring 3 is coaxially arranged with the flange along the horizontal direction, the plurality of support ring fixed connection blocks 4 and the expansion fixing screws 5 are also arranged in the through hole of the flange, each support ring fixed connection block 4 is connected with the support ring, the support ring fixed connection block 4 is provided with a locking hole allowing the corresponding expansion fixing screw 5 to be screwed in, the expansion fixing screw 5 is screwed into the locking hole to abut against the inner wall of the through hole, the, the flange protective cover 1 is circular structure and radius is greater than the through-hole, and lock nut 6 passes flange protective cover 1 screw in locating hole.
According to the embodiment of the invention, the inner ring type large-diameter flange sealing surface protection device is characterized in that expansion fixing screws 5 are installed on support ring-mounted fixing connecting blocks 4, each support ring fixing connecting block 4 is connected with a support ring and integrally plugged into a through hole, the inner support ring 3 is kept equidistant from the inner wall of the through hole along the circumferential direction, the whole inner support ring 3 is fixed on the inner wall of the through hole by tightening the expansion fixing screws 5 so as to form firm and reliable fixation, and the whole large-size flange protection cover 1 is tightly attached to a flange sealing surface by tightening a locking nut 6 so as to play an effective protection role. The problems that the water dense veins of the sealing surface are easy to be damaged by sand blasting, colliding, scratching and the like in the sand blasting and construction transportation and storage processes of the large-size flange sealing surface are solved, and the problems that the grinding material, water and garbage foreign matter enter the pipeline from the flange port of the pipeline to pollute the inner wall of the pipeline are effectively isolated, so that the problems that the inside of the pipeline is difficult to clean and the construction is difficult and the like caused by the entering of the grinding material, water and garbage foreign matter are avoided, and the sealing device has the characteristics of simple structure, convenient operation, economic safety, short installation and plugging time and the like, can be recycled, has comprehensive and breakthrough improvement on the effects of protection, tightness, convenience in operation, convenience in storage and protection and the like, thereby effectively protecting the large-size flange sealing surface, effectively avoiding the high cost for repairing the flange surface caused by the damaged flange sealing surface, and improving the efficiency and the protection level, the construction cost of people, materials, machines and the like is reduced, meanwhile, unnecessary waste caused by sand cleaning and sand blowing after sand blasting construction in the prior art is reduced, high cost caused by the fact that the inner wall of the pipeline needs to be cleaned professionally after being polluted is avoided, and the purposes of energy conservation, emission reduction, cost reduction and efficiency improvement are achieved.
According to the embodiment of the present invention, there are a plurality of lock nuts 6, and the plurality of lock nuts 6 are equally angularly distributed along the flange protection cover 1 with the axis of the through hole as a center line.
Specifically, the number of the lock nuts 6 is two, and the two lock nuts 6 are symmetrically arranged along the axis of the through hole.
According to the embodiment of the invention, a plurality of expansion fixing screws 5 are provided, and the plurality of expansion fixing screws 5 are uniformly distributed along the inner wall of the through hole by taking the axis of the through hole as a central line.
Specifically, two expansion fixing screws 5 are provided, and the two expansion fixing screws 5 are symmetrically arranged along the axis of the through hole.
According to the embodiment of the present invention, a silica gel protective pad 2 is disposed between the flange protective cover 1 and the cover of the flange.
Specifically, the outer contour line of the silica gel protection pad 2 is the same as the outer contour line of the flange protection cover 1.
Specifically, each lock nut 6 is externally fixed with a flat washer 7.
Still including the supplementary dog 8 of installation, the supplementary dog 8 of installation and 1 fixed connection of flange protection cover, and the supplementary dog 8 of installation is laminated with the inner wall of through-hole mutually, the flange protection cover 1 of pasting silica gel protection pad 2 and the supplementary dog 8 of installation is lifted and is adorned in the flange mouth, make the supplementary dog 8 of installation fall on the flange inner wall, slowly stick up whole flange protection cover, aim at the bolt hole on flange protection cover 1 and the inside support ring 3 at last, thereby utilize lock nut 6's fastening force to give flange protection cover 1 through plain washer 7 with pressure transmission for flange protection cover 1 and make the silica gel protection pad 2 closely paste and effectively protect it.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (9)
1. An inner ring type large-diameter flange sealing surface protection device is arranged on a flange, the axis of a through hole of the flange is arranged along the horizontal direction, and the device is characterized by comprising a flange protection cover, an inner support ring, a plurality of support ring fixed connection blocks, a plurality of expansion fixing screws and a plurality of locking nuts, wherein the expansion fixing screws and the locking nuts are in one-to-one correspondence with the support ring fixed connection blocks, the inner support ring is arranged in the through hole of the flange, the central axis of the inner support ring is coaxially arranged with the flange along the horizontal direction, the support ring fixed connection blocks and the expansion fixing screws are also arranged in the through hole of the flange, each support ring fixed connection block is connected with the support ring, the support ring fixed connection blocks are provided with locking holes allowing the corresponding expansion fixing screws to be screwed in, and the expansion fixing screws are screwed in the locking holes and abut against the inner wall of the, the inside support ring sets up along the horizontal direction and allows every the locating hole of lock nut screw in, the flange protective cover is circular structure and radius and is greater than the radius of through-hole, lock nut passes flange protective cover screw in the locating hole.
2. The inner ring type heavy caliber flange sealing surface protector according to claim 1, wherein the number of the locking nuts is plural, and the plural locking nuts are distributed along the flange protecting cover at equal angles with the axis of the through hole as a central line.
3. An inner ring type large-caliber flange sealing surface protection device according to claim 2, wherein the number of the locking nuts is two, and the two locking nuts are symmetrically arranged along the axis of the through hole.
4. An inner ring type large-caliber flange sealing surface protection device according to claim 1, wherein a plurality of expansion fixing screws are uniformly distributed along the inner wall of the through hole by taking the axis of the through hole as a central line.
5. An inner ring type large-caliber flange sealing surface protection device according to claim 4, wherein two expansion fixing screws are arranged, and the two expansion fixing screws are symmetrically arranged along the axis of the through hole.
6. The inner ring type heavy caliber flange sealing surface protector according to claim 1, wherein a silica gel protective pad is arranged between the flange protective cover and the front cover of the flange.
7. The inner ring type heavy caliber flange sealing surface protector according to claim 6, wherein the outer contour line of the silica gel protective pad is the same as the outer contour line of the flange protective cover.
8. The inner ring type large-caliber flange sealing surface protection device according to claim 1, further comprising an installation auxiliary stop, wherein the installation auxiliary stop is fixedly connected with the flange protection cover and is attached to the inner wall of the through hole.
9. An inner ring type heavy caliber flange sealing surface protector according to claim 1 wherein each of the lock nuts is externally fixed with a flat washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910770839.6A CN110553107A (en) | 2019-08-20 | 2019-08-20 | Inner ring type large-caliber flange sealing surface protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910770839.6A CN110553107A (en) | 2019-08-20 | 2019-08-20 | Inner ring type large-caliber flange sealing surface protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110553107A true CN110553107A (en) | 2019-12-10 |
Family
ID=68737848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910770839.6A Pending CN110553107A (en) | 2019-08-20 | 2019-08-20 | Inner ring type large-caliber flange sealing surface protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110553107A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114484108A (en) * | 2022-01-28 | 2022-05-13 | 重庆川仪调节阀有限公司 | Protection device and protection method for sealing surface and welding groove |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0339525A2 (en) * | 1988-04-25 | 1989-11-02 | Walter Schnorrer | Device for temporarily plugging the end of a pipe used as a district heating pipe, a water supply pipe or a sewer pipe |
| CN104776279A (en) * | 2015-03-30 | 2015-07-15 | 山东华信塑胶股份有限公司 | Internal insertion type L-shaped sealing ring for flange connection and use method of internal insertion type L-shaped sealing ring |
| CN204717222U (en) * | 2015-07-01 | 2015-10-21 | 中国石油天然气集团公司 | Interior compression type plugging apparatus for pipe end |
| CN205745851U (en) * | 2016-05-03 | 2016-11-30 | 徐州康博智能控制仪表有限公司 | pipeline plug |
| CN107859798A (en) * | 2017-10-25 | 2018-03-30 | 季梅 | A kind of two-bolt lock curable type pipeline jointing construction |
| CN109237193A (en) * | 2018-10-24 | 2019-01-18 | 海洋石油工程（青岛）有限公司 | The no-welding expanding blocking device of pressure test of snap ring-type |
| CN109827023A (en) * | 2019-04-02 | 2019-05-31 | 山西省机械产品质量监督检验站 | Gas transmission line pipeline pipe end plugging device |
-
2019
- 2019-08-20 CN CN201910770839.6A patent/CN110553107A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0339525A2 (en) * | 1988-04-25 | 1989-11-02 | Walter Schnorrer | Device for temporarily plugging the end of a pipe used as a district heating pipe, a water supply pipe or a sewer pipe |
| CN104776279A (en) * | 2015-03-30 | 2015-07-15 | 山东华信塑胶股份有限公司 | Internal insertion type L-shaped sealing ring for flange connection and use method of internal insertion type L-shaped sealing ring |
| CN204717222U (en) * | 2015-07-01 | 2015-10-21 | 中国石油天然气集团公司 | Interior compression type plugging apparatus for pipe end |
| CN205745851U (en) * | 2016-05-03 | 2016-11-30 | 徐州康博智能控制仪表有限公司 | pipeline plug |
| CN107859798A (en) * | 2017-10-25 | 2018-03-30 | 季梅 | A kind of two-bolt lock curable type pipeline jointing construction |
| CN109237193A (en) * | 2018-10-24 | 2019-01-18 | 海洋石油工程（青岛）有限公司 | The no-welding expanding blocking device of pressure test of snap ring-type |
| CN109827023A (en) * | 2019-04-02 | 2019-05-31 | 山西省机械产品质量监督检验站 | Gas transmission line pipeline pipe end plugging device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114484108A (en) * | 2022-01-28 | 2022-05-13 | 重庆川仪调节阀有限公司 | Protection device and protection method for sealing surface and welding groove |
| CN114484108B (en) * | 2022-01-28 | 2024-03-12 | 重庆川仪调节阀有限公司 | Protection device and protection method for sealing surface and welding groove |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191210 |
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| RJ01 | Rejection of invention patent application after publication |