CN2048550U - Flange insulating device - Google Patents
Flange insulating device Download PDFInfo
- Publication number
- CN2048550U CN2048550U CN 89212800 CN89212800U CN2048550U CN 2048550 U CN2048550 U CN 2048550U CN 89212800 CN89212800 CN 89212800 CN 89212800 U CN89212800 U CN 89212800U CN 2048550 U CN2048550 U CN 2048550U
- Authority
- CN
- China
- Prior art keywords
- flange
- insulation board
- pipeline
- diameter
- insulation plate
- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses a flange insulating device for the electrochemical anticorrosion of metallic conduits. The positioning step of an insulation plate is arranged on the end face of a flange. The diameter of the insulation plate is not bigger than the combined diameter of the flange, and only one central hole which is accordance to the inner diameter of a conduit is arranged on the insulation plate. A dismounting mechanism can also be arranged on the flange. After the device is adopted, when the insulation plate and seal components are inspected and replaced, the flange can not need to be cut from the conduit.
Description
The utility model is a kind of flange seal that uses when metallic conduit is implemented electrochemical anti-corrosive erosion protection.
Adopt electrochemical method to protect to metallic conduit, for example making pipeline keep the cathodic protection of certain potentials value is widely used a kind of anti-corrosion protection method.By preventing chargedly on the pipeline to scatter and disappear and keep satisfactory current density, be necessary with pipeline by the pipeline section that certain-length is separated into electrically insulated from one another with seal, its mode generally is the flange seal that is provided with insulation board between pipeline section.This seal that uses is in the middle form that is provided with the insulation board that equates with flange outer diameter of two flanges with level and smooth end face at present, on its insulation board except the center hole that adapts with internal diameter of the pipeline is arranged, periphery also must have with flange on the fastening screw keyhole adapt lateral opening so that pass clamping bolt during clamp flange.During in use as if need inspection or replacing insulation board or Sealing, because of it can't freely pick and place the mode that whole flange apparatus is cut down can only taked from pipeline, again weld back original position again after inspection or the replacing, troublesome poeration not only, the pipeline of carrying inflammable medium is also caused danger and accident easily, and will inevitably adjust the distance very near insulation board and position Sealing thereon of the high temperature in cutting or when welding has a negative impact, reduce even destroy the performance of Sealing, reduce working life.On the other hand, big and geometrical construction is complicated because of insulation board, high material consumption, processing charges are also high.The concentricity of its center hole and internal diameter of the pipeline centering artificially in use simultaneously, easily make the insulation board inner ring surface charge into pipeline or with the pipeline decentraction, influence the transfer efficiency of pipeline, increase to pollute the deposition and the operation of inconvenience mediation pigging of foreign material, when serious even may cause failure of insulation.
The purpose of this utility model be for overcome the problems referred to above design a kind of simple in structure, reliable performance, the flange seal of manufacturing, use and convenient maintenance and replacement.
Flange seal of the present utility model is made up of flange and insulation board equally, is provided with the positioning step that can make insulation board location on the end face of flange, and the diameter of insulation board be equal to or less than flange in conjunction with diameter.The materials consumption that the reducing of insulation board diameter not only reduced, and owing to no longer be related with the flange clamping bolt, thereby only need have a center hole that adapts with internal diameter of the pipeline to get final product it on, geometrical construction is greatly simplification also, easy to process.Being provided with of end face of flange positioning step can make insulation board accurate location naturally, avoided the people for centering operate the fault that may bring, make the accuracy of center hole and pipeline concentricity that reliable assurance arranged.Because insulation board can not be subjected to the interference of flange clamping bolt, therefore after loosening clamping bolt and the both ends of the surface of flange being backed down separation with appropriate device, insulation board and Sealing just can pick and place easily, not only made things convenient for and checked the operation of changing, and put into insulation board and Sealing again after can taking earlier flange to be welded into pipeline, avoided welding high temperature that it is had a negative impact.To carrying the pipeline of inflammable medium, because there is not naked light fully in maintenance process, Security greatly improves, and also having removed from a large amount of is to guarantee the necessary various operations of safety, has saved operating cost.
Certainly, if the disassembly mechanism that the flange both ends of the surface will be separated, some jackscrew structures for example convenient and commonly used are set directly on the flange, more help using operation beyond doubt.
Embodiment below in conjunction with accompanying drawing specifically introduces structure of the present utility model.
The flange seal structure that Fig. 1 is present
The structure of Fig. 2 the utility model flange seal
The structure of present flange seal is provided with the insulation board 3 suitable with flange outer diameter having between two flanges 1 of level and smooth end face as shown in Figure 1, and except that center hole, periphery also has bolt hole on it.
As seen from Figure 2, in the flange seal of the present utility model, the positioning ring 2 that is higher than Transverse plane is arranged all on the end face of two flanges 1, the inner circumference of positioning ring is concentric with the interior circle of pipeline, and its internal diameter be not more than flange 1 in conjunction with diameter.Insulation board 3 is positioned and is placed within the positioning ring 2, has only a center hole that adapts with internal diameter of the pipeline to reach the Sealing 4 that is provided with routinely on it.The periphery of flange 1 is provided with manual spiral jackscrew 5 symmetrically.After earlier flange 1 being welded into pipeline respectively during use, the insulation board 3 that will have Sealing 4 is again put into positioning ring 2, at last with bolt with the flange 1 fastening requirement that can reach insulation and sealing.When inspection or replacing insulation board or Sealing, only need loosen clamping bolt, make the both ends of the surface of flange 1 separate certain distance, just can pick and place insulation board and Sealing easily with jackscrew 5.
Claims (3)
1, a kind of flange seal that when metallic conduit adopts electrochemical anti-corrosive, uses, form by flange (1) and insulation board (3), it is characterized in that the positioning step (2) that makes insulation board (3) location is arranged on the end face of flange (1), and the external diameter of insulation board (3) be not more than flange (1) in conjunction with diameter, have only a center hole that adapts with internal diameter of the pipeline on it.
2, device as claimed in claim 1 is characterized in that said flange (1) is provided with the disassembly mechanism (5) that the flange both ends of the surface are separated.
3,, it is characterized in that said positioning step (2) is the positioning ring of ring-type as the device of claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89212800 CN2048550U (en) | 1989-03-06 | 1989-03-06 | Flange insulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89212800 CN2048550U (en) | 1989-03-06 | 1989-03-06 | Flange insulating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2048550U true CN2048550U (en) | 1989-11-29 |
Family
ID=4868901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89212800 Expired - Lifetime CN2048550U (en) | 1989-03-06 | 1989-03-06 | Flange insulating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2048550U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453251A (en) * | 2013-09-13 | 2013-12-18 | 太原重工股份有限公司 | Attached flange of hydraulic machine |
| CN107461556A (en) * | 2016-06-03 | 2017-12-12 | 开利公司 | Flange connecting assembly and its handling method, pipeline connecting device and cooler unit |
-
1989
- 1989-03-06 CN CN 89212800 patent/CN2048550U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453251A (en) * | 2013-09-13 | 2013-12-18 | 太原重工股份有限公司 | Attached flange of hydraulic machine |
| CN107461556A (en) * | 2016-06-03 | 2017-12-12 | 开利公司 | Flange connecting assembly and its handling method, pipeline connecting device and cooler unit |
| CN107461556B (en) * | 2016-06-03 | 2024-05-03 | 开利公司 | Flange connection assembly, assembling and disassembling method thereof, pipeline connection device and cooler unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |