CN116753306A - Insulating joint sealing packing, insulating joint sealing structure and insulating joint sealing method - Google Patents
Insulating joint sealing packing, insulating joint sealing structure and insulating joint sealing method Download PDFInfo
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- CN116753306A CN116753306A CN202310873746.2A CN202310873746A CN116753306A CN 116753306 A CN116753306 A CN 116753306A CN 202310873746 A CN202310873746 A CN 202310873746A CN 116753306 A CN116753306 A CN 116753306A
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- insulating joint
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- annular gap
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- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
本发明公开一种绝缘接头密封填料、绝缘接头密封结构及绝缘接头密封方法。绝缘接头密封填料由多层环氧玻璃布层压板紧密层叠布置而成，用于填充在绝缘接头的缸套与内法兰之间的环形缝隙内，以密封环形缝隙。该密封填料采用环氧层压玻璃布板作为填充材料，环氧玻璃布层压板表面光滑，且紧密层叠布置，能够充满绝缘接头待密封的环形缝隙，和绝缘接头成为一体，由于环氧层压玻璃布板的力学性能和周围金属基本一致，在填入环形缝隙后，可以使得绝缘接头整体刚度得到加强，且环氧玻璃布层压板不变形，保证了绝缘接头的密封性能，同时其优异的绝缘性能可保证绝缘接头的电绝缘远远高于标准要求。绝缘接头密封结构中采用了上述绝缘接头密封填料。
The invention discloses an insulating joint sealing filler, an insulating joint sealing structure and an insulating joint sealing method. The insulating joint sealing filler is composed of multiple layers of epoxy glass cloth laminates that are tightly stacked and arranged. It is used to fill the annular gap between the cylinder liner and the inner flange of the insulating joint to seal the annular gap. The sealing filler uses epoxy laminated glass cloth board as the filling material. The surface of the epoxy glass cloth laminate board is smooth and closely stacked. It can fill the annular gap to be sealed in the insulating joint and become one with the insulating joint. Due to the epoxy lamination The mechanical properties of the glass cloth board are basically the same as those of the surrounding metal. After filling the annular gap, the overall stiffness of the insulating joint can be strengthened, and the epoxy glass cloth laminate will not deform, ensuring the sealing performance of the insulating joint. At the same time, its excellent The insulation performance ensures that the electrical insulation of the insulated joint is much higher than the standard requirements. The above-mentioned insulating joint sealing filler is used in the insulating joint sealing structure.
Description
Technical Field
The invention belongs to the field of mechanical engineering, relates to an insulating joint technology, and particularly relates to an insulating joint sealing filler, an insulating joint sealing structure and an insulating joint sealing method.
Background
At present, most of conventional insulating joints adopt cold-setting and hot-hardening epoxy resin and curing agent mixture as filling materials, and different proportions and curing time influence the density of the insulating joints, so that comprehensive indexes such as structural strength of the insulating joints are influenced. The cured epoxy resin is easy to crack when being subjected to external bending stress, the strength is greatly reduced, and then due to the influence of bubbles generated by curing thermal shrinkage and the fluidity (viscosity) of the epoxy resin, the cavity in the insulating joint cannot be completely filled to generate gaps, the strength and the rigidity of the cavity in the middle of the cylinder sleeve and the inner flange are not ideal, the filled epoxy resin does not play a role of reinforcing the cylinder sleeve, the cavity and the inner flange, the sealing structure cannot be assisted in protecting the sealing structure from deformation, the integral sealing of the insulating joint is not facilitated, meanwhile, the unfilled cavity also can cause poor electric insulation strength, the breakdown voltage of the insulating joint cannot be 100% met, and the requirement of the insulating joint is not less than 3.0KV and the repairing is frequently required to be disassembled.
In view of the foregoing, it is necessary to provide a novel sealing filler for insulated joints to improve the overall performance of insulated joints, and further solve the problems of the conventional fillers.
Disclosure of Invention
The invention aims to provide an insulating joint sealing filler, an insulating joint sealing structure and an insulating joint sealing method, which are used for solving the problems of the existing filler.
In order to achieve the above object, the present invention provides the following solutions:
the invention provides an insulating joint sealing filler which is formed by tightly stacking a plurality of epoxy glass cloth laminated plates and is used for filling an annular gap between a cylinder sleeve and an inner flange of an insulating joint so as to seal the annular gap.
Optionally, any one of the epoxy glass cloth laminated plates is a closed annular laminated plate, and the closed annular laminated plate is formed by bending and splicing the epoxy glass cloth laminated plates with a flat plate structure.
Optionally, the splicing interfaces on any two layers of the closed circular laminated boards are arranged in a staggered manner.
Optionally, the thickness of any layer of the epoxy glass cloth laminated board is 0.3 mm-0.6 mm.
Optionally, 4-5 layers of the epoxy glass cloth laminated board are arranged.
The invention also provides an insulating joint sealing structure, which comprises a cylinder sleeve, an inner flange sleeved in the cylinder sleeve, an annular gap formed between the inner wall of the cylinder sleeve and the outer wall of the inner flange, and the insulating joint sealing filler filled in the annular gap and coaxial with the annular gap, so as to realize the sealing of the insulating joint sealing filler to the annular gap.
The invention also provides an insulating joint sealing method, which adopts the insulating joint sealing filler seal and comprises the following steps:
s1, measuring the annular width of an annular gap between a cylinder sleeve and an inner flange in an insulating joint;
s2, calculating the number of layers used by the epoxy glass cloth laminated board according to the ring width and the thickness of the epoxy glass cloth laminated board with the flat plate structure;
step S3, calculating the unfolding length of each epoxy glass cloth laminated board according to the inner diameter of the cylinder sleeve and the number of layers used by the epoxy glass cloth laminated board, and cutting each epoxy glass cloth laminated board to form a corresponding unfolding length;
s4, confirming the unfolding width of each epoxy glass cloth laminated board according to the axial length of the annular gap, and cutting each epoxy glass cloth laminated board to form a corresponding unfolding width;
and S5, paving the epoxy glass cloth laminated board with the cut unfolding length and the cut unfolding width layer by layer in the annular gap until the annular gap is fully paved in the radial direction.
Optionally, in step S5, the epoxy glass cloth laminated board is laid layer by layer from the outer layer to the inner layer in the annular gap.
Optionally, in step S5, the splicing interfaces of any two epoxy glass cloth laminated boards are arranged in a staggered manner.
Compared with the prior art, the invention has the following technical effects:
the insulating joint sealing filler is formed by tightly laminating a plurality of epoxy glass cloth laminated plates and is used for filling an annular gap between a cylinder sleeve and an inner flange of an insulating joint so as to seal the annular gap. The sealing filler adopts the epoxy laminated glass cloth plate as a filling material, the surface of the epoxy laminated glass cloth plate is smooth and is tightly laminated, the annular gap to be sealed of the insulating joint can be filled, the sealing filler and the insulating joint are integrated, and the mechanical property of the epoxy laminated glass cloth plate is basically consistent with that of surrounding metal, so that the integral rigidity of the insulating joint can be enhanced after the epoxy laminated glass cloth plate is filled into the annular gap between the cylinder sleeve and the inner flange, and the integral rigidity of the insulating joint is basically equal to that of integral metal. When the epoxy glass cloth laminated board is subjected to external bending stress, the epoxy glass cloth laminated board is not damaged or deformed, the sealing performance of the insulating joint is ensured, meanwhile, the excellent insulating performance of the epoxy glass cloth laminated board can ensure that the electric insulation of the insulating joint is far higher than the standard requirement, and ensure various requirements of the insulating joint, so that the epoxy glass cloth laminated board can run in a long-distance pipeline well and stably.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an insulating joint sealing structure according to an embodiment of the present invention.
Wherein, the reference numerals are as follows:
1. an insulating joint sealing structure; 2. cylinder sleeve; 3. an inner flange; 4. an insulating ring; 5. the insulating joint seals the packing.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide an insulating joint sealing filler, which solves the problems that the existing filler cannot fully fill a cavity in an insulating joint, cannot play a role in reinforcing a cylinder sleeve, a cavity and an inner flange, is easy to deform and is not beneficial to integral sealing of the insulating joint, and poor in electric insulation strength.
Another object of the present invention is to provide an insulated joint sealing structure having the above insulated joint sealing filler.
Still another object of the present invention is to provide an insulating joint sealing method, which uses the insulating joint sealing filler seal described above.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Example 1
As shown in fig. 1, the present embodiment provides an insulating joint sealing filler 5, which is formed by closely laminating a plurality of epoxy glass cloth laminates, for filling in an annular gap between a cylinder liner 2 and an inner flange 3 of an insulating joint to seal the annular gap.
In this embodiment, any one of the epoxy glass cloth laminated boards is preferably a closed annular laminated board, the closed annular laminated board is formed by bending and splicing epoxy glass cloth laminated boards with flat plate structures, and a splicing interface is formed at the splicing position. Generally, the epoxy glass cloth laminated board with a flat plate structure is rectangular, after the epoxy glass cloth laminated board is bent to form a closed circular ring shape, two end parts are spliced to form a splicing seam, and the splicing seam is parallel to the axial direction of the closed circular ring-shaped laminated board.
In this embodiment, the splice interfaces on any two layers of the closed circular laminate are arranged in a staggered manner.
In the embodiment, the thickness of any one epoxy glass cloth laminated board is 0.3 mm-0.6 mm.
In this embodiment, the epoxy glass cloth laminate in the insulating joint sealing filler 5 is preferably arranged with 4 to 5 layers. The total wall thickness of the insulating joint sealing filler 5 is 2.0 mm-2.5 mm.
Further, in this embodiment, each epoxy glass cloth laminated board is preferably a finished sheet with a thickness of 0.5mm, and under the condition of the thickness, the epoxy glass cloth laminated board is easy to bend into a round thin shell, so that the epoxy glass cloth laminated board is convenient to install. The annular gap between the cylinder sleeve 2 and the inner flange 3 is generally about 2.0-2.5mm in annular width, so that the insulating joint sealing filler 5 is generally provided with 4-5 layers of epoxy glass laminated plates, and the multi-layer epoxy glass laminated plates can ensure a tighter filling structure and better isolation effect.
The epoxy glass cloth laminated board is 3240, also called as 3240 epoxy board, which is pressed and formed under high temperature and high pressure, is a finished epoxy resin material produced by special process, and has the characteristics of high strength, good toughness, good electrical insulation performance, moisture resistance, heat resistance, compact structure, smooth surface and the like. When the insulating joint is assembled, the annular gap between the cylinder sleeve 2 and the inner flange 3 is filled with the insulating joint sealing filler 5, and the insulating joint sealing filler 5 can completely fill the annular gap. The epoxy glass cloth laminated board has smooth surface, adopts a mode of multilayer overlapping installation, forms a multilayer compact structure in an annular gap of the insulating joint and fills the cavity, and the insulating joint is completely integrated with the cylinder sleeve and the inner flange. When the epoxy glass cloth laminated board is subjected to external bending stress, the epoxy glass cloth laminated board cannot be damaged, the whole insulating joint sealing filler 5 is not easy to deform, the sealing performance of the insulating joint is guaranteed, meanwhile, the excellent insulating performance can ensure that the electric insulation of the insulating joint is far higher than the standard requirement, the problems that the electric insulation strength of the existing filler is poor, the breakdown voltage of the insulating joint is not less than 3.0KV and the existing filler cannot meet the requirement of not less than 100% and the insulating joint is frequently required to be disassembled and repaired are solved.
Example two
The embodiment provides an insulating joint sealing structure 1, which comprises a cylinder sleeve 2 and an inner flange 3 sleeved in the cylinder sleeve 2, wherein an annular gap is formed between the inner wall of the cylinder sleeve 2 and the outer wall of the inner flange 3, the annular gap is filled with insulating joint sealing filler 5 in the first embodiment as a sealing structure, and the insulating joint sealing filler 5 is coaxial with the annular gap so as to realize the sealing of the insulating joint sealing filler 5 to the annular gap.
A specific assembly mode of the insulating joint sealing structure 1 will be described below.
As shown in fig. 1, a cylinder sleeve 2 is vertically placed on an operation platform, an insulating ring 4 and an inner flange 3 are sequentially arranged in the cylinder sleeve 2, and then the position of the cylinder sleeve 2 is corrected through a centering tool so as to be coaxial with the inner flange 3; the assembly form and assembly structure among the cylinder sleeve 2, the insulating ring 4 and the inner flange 3 are conventional arrangements of the existing insulating joint, and are not described herein in detail.
Then, measuring the ring width of the annular gap between the cylinder sleeve 2 and the inner flange 3 by using a feeler gauge, wherein the ring width value is used for calculating the number of layers used by the epoxy glass cloth laminated board; then calculating the unfolding length of each epoxy glass cloth laminated board according to the inner diameter of the cylinder sleeve 2; then calculating the width of each epoxy glass cloth laminated board according to the axial length of the annular gap; finally, in the annular gap between the cylinder sleeve 2 and the inner flange 3, epoxy glass cloth laminated plates are paved layer by layer from outside to inside, the joint positions of each layer of epoxy glass cloth laminated plates are not in the same position during paving, and each layer of epoxy glass cloth laminated plates are paved in sequence until the whole annular gap is paved, so that a compact multi-layer sealing filler structure is formed, the outer wall of the outermost layer of epoxy glass cloth laminated plates is tightly attached to the inner wall of the cylinder sleeve 2, and the inner wall of the innermost layer of epoxy glass cloth laminated plates is tightly attached to the outer wall of the inner flange 3.
The insulating joint sealing structure 1 has the following advantages that the insulating joint sealing filler 5 is adopted as a sealing structure:
1. the epoxy glass cloth laminated board has excellent mechanical property and can be comparable with the bending strength and impact toughness of metals.
2. The epoxy glass cloth laminated board has excellent electrical insulation performance, and the dielectric strength, insulation resistance and the like of the epoxy glass cloth laminated board are far higher than the standard requirements of an insulation joint.
3. The epoxy glass cloth laminated board is adopted as the sealing filler of the insulating joint, the shrinkage is low, the structure is compact, the multi-layer epoxy glass cloth laminated board is orderly staggered and overlapped to be filled in the annular gap between the cylinder sleeve 2 and the inner flange 3, the gap in the annular gap is controlled to be about 2.0-2.5mm, 4-5 layers of epoxy glass cloth laminated boards with the thickness of 0.5mm can be generally installed, the multi-layer board ensures that the filling structure is tighter, and the isolation effect is better.
4. The epoxy glass cloth laminated board is used as sealing filler of the insulating joint, so that the sealing structure can be better protected from deformation and displacement.
5. When the epoxy glass laminated board is subjected to external bending stress, the epoxy glass laminated board cannot be damaged, so that the insulating joint structure is more stable, and the traditional epoxy resin is poor in flexibility and easy to crack.
6. The epoxy glass cloth laminated board is used as sealing filler of the insulating joint, so that the integral strength and rigidity of the insulating joint can be enhanced, and the epoxy glass cloth laminated board has the significance of wide popularization.
7. From the economical point of view, the epoxy glass cloth laminated board can reduce the processing operation time as a finished product, avoid unstable performance indexes caused by manual operation, and the traditional epoxy resin needs to be mixed and proportioned with a curing agent, so that the curing waiting time is longer.
8. The installation is easy to operate, and before the outer flange and the cylinder sleeve 2 are matched and assembled and welded, the epoxy glass cloth laminated board can be filled into the annular gap between the cylinder sleeve 2 and the inner flange 3 layer by layer, so that the filling condition of the cavity can be observed in real time, and the cavity is ensured not to leave gaps. The epoxy resin is filled and filled in the hole on the cylinder sleeve 2, so that the filling condition in the annular gap between the cylinder sleeve 2 and the inner flange 3 is difficult to observe, and the full evaluation experience of the filling effect is achieved without specific judging standards.
9. In a long-distance pipeline, the insulating joint sealing filler 5 can reduce potential safety hazards of insulating joint sealing failure, poor insulating effect and the like caused by factors such as stress concentration, rapid reduction of the discharging pressure and the like under various complex conditions of the insulating joint, and the sealing structure adopting the epoxy glass cloth laminated plate as the sealing filler improves the sealing performance and the electrical insulating performance of the nonmetallic isolating insulator, can strengthen the integral strength and the rigidity of the insulating joint, and has the significance of wide popularization.
Example III
The embodiment provides an insulating joint sealing method, which adopts the insulating joint sealing filler 5 of the first embodiment for sealing, and specifically comprises the following steps:
s1, measuring the annular width of an annular gap between a cylinder sleeve 2 and an inner flange 3 in an insulating joint; the loop width value is typically measured using a feeler gauge.
And S2, calculating the number of layers of the epoxy glass cloth laminated board according to the ring width and the thickness of the epoxy glass cloth laminated board with the flat plate structure.
And S3, calculating the unfolding length of each epoxy glass cloth laminated board according to the inner diameter of the cylinder sleeve 2 and the number of layers of the epoxy glass cloth laminated board, and cutting the epoxy glass cloth laminated board to form the corresponding unfolding length.
And S4, confirming the unfolding width of each epoxy glass cloth laminated board according to the axial length of the annular gap, and cutting each epoxy glass cloth laminated board to form a corresponding unfolding width.
And S5, paving the epoxy glass cloth laminated plates with the cut unfolding length and the cut unfolding width layer by layer in the annular gap until the whole annular gap is fully paved in the radial direction, so that a compact multi-layer sealing filler structure is formed, the outer wall of the outermost epoxy glass cloth laminated plate is tightly attached to the inner wall of the cylinder sleeve 2, and the inner wall of the innermost epoxy glass cloth laminated plate is tightly attached to the outer wall of the inner flange 3.
In actual operation, the epoxy glass cloth laminated plates are preferably laid layer by layer from the outer layer to the inner layer in the annular gap, and the splicing interfaces of any two epoxy glass cloth laminated plates are generally arranged in a staggered manner, namely, in the insulating joint sealing filler 5 formed by laying all the epoxy glass cloth laminated plates layer by layer, the splicing interfaces of all the epoxy glass cloth laminated plates are positioned at different positions. The splicing structure can be connected in a bonding mode or the like, and can be kept in a closed ring state by the internal and external extrusion action of two adjacent epoxy glass cloth laminated plates; correspondingly, the outermost epoxy glass laminated board keeps a closed ring state through the inner wall of the cylinder sleeve 2 and the inner and outer extrusion actions of the adjacent epoxy glass laminated boards, and the innermost epoxy glass laminated board keeps a closed ring state through the outer wall of the inner flange 3 and the inner and outer extrusion actions of the adjacent epoxy glass laminated boards.
Generally, as shown in fig. 1, before step S1, the cylinder liner 2 is vertically placed on an operation platform, an insulating ring 4 and an inner flange 3 are sequentially installed in the cylinder liner 2, and then the position of the cylinder liner 2 is corrected by a centering tool so as to be coaxial with the inner flange 3; the assembly form and assembly structure among the cylinder sleeve 2, the insulating ring 4 and the inner flange 3 are conventional arrangements of the existing insulating joint, and are not described herein in detail.
The insulating joint sealing structure 1 as disclosed in the second embodiment can be formed based on the above-described insulating joint sealing method, and the insulating joint sealing structure 1 has the following advantages in that the insulating joint sealing filler 5 is used as a sealing structure:
1. the epoxy glass cloth laminated board has excellent mechanical property and can be comparable with the bending strength and impact toughness of metals.
2. The epoxy glass cloth laminated board has excellent electrical insulation performance, and the dielectric strength, insulation resistance and the like of the epoxy glass cloth laminated board are far higher than the standard requirements of an insulation joint.
3. The epoxy glass cloth laminated board is adopted as the sealing filler of the insulating joint, the shrinkage is low, the structure is compact, the multi-layer epoxy glass cloth laminated board is orderly staggered and overlapped to be filled in the annular gap between the cylinder sleeve 2 and the inner flange 3, the gap in the annular gap is controlled to be about 2.0-2.5mm, 4-5 layers of epoxy glass cloth laminated boards with the thickness of 0.5mm can be generally installed, the multi-layer board ensures that the filling structure is tighter, and the isolation effect is better.
4. The epoxy glass cloth laminated board is used as sealing filler of the insulating joint, so that the sealing structure can be better protected from deformation and displacement.
5. When the epoxy glass laminated board is subjected to external bending stress, the epoxy glass laminated board cannot be damaged, so that the insulating joint structure is more stable, and the traditional epoxy resin is poor in flexibility and easy to crack.
6. The epoxy glass cloth laminated board is used as sealing filler of the insulating joint, so that the integral strength and rigidity of the insulating joint can be enhanced, and the epoxy glass cloth laminated board has the significance of wide popularization.
7. From the economical point of view, the epoxy glass cloth laminated board can reduce the processing operation time as a finished product, avoid unstable performance indexes caused by manual operation, and the traditional epoxy resin needs to be mixed and proportioned with a curing agent, so that the curing waiting time is longer.
8. The installation is easy to operate, and before the outer flange and the cylinder sleeve 2 are matched and assembled and welded, the epoxy glass cloth laminated board can be filled into the annular gap between the cylinder sleeve 2 and the inner flange 3 layer by layer, so that the filling condition of the cavity can be observed in real time, and the cavity is ensured not to leave gaps. The epoxy resin is filled and filled in the hole on the cylinder sleeve 2, so that the filling condition in the annular gap between the cylinder sleeve 2 and the inner flange 3 is difficult to observe, and the full evaluation experience of the filling effect is achieved without specific judging standards.
9. In a long-distance pipeline, the insulating joint sealing filler 5 can reduce potential safety hazards of insulating joint sealing failure, poor insulating effect and the like caused by factors such as stress concentration, rapid reduction of the discharging pressure and the like under various complex conditions of the insulating joint, and the sealing structure adopting the epoxy glass cloth laminated plate as the sealing filler improves the sealing performance and the electrical insulating performance of the nonmetallic isolating insulator, can strengthen the integral strength and the rigidity of the insulating joint, and has the significance of wide popularization.
It should be noted that it will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (9)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310873746.2A CN116753306A (en) | 2023-07-17 | 2023-07-17 | Insulating joint sealing packing, insulating joint sealing structure and insulating joint sealing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310873746.2A CN116753306A (en) | 2023-07-17 | 2023-07-17 | Insulating joint sealing packing, insulating joint sealing structure and insulating joint sealing method |
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| CN116753306A true CN116753306A (en) | 2023-09-15 |
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|---|---|---|---|
| CN202310873746.2A Pending CN116753306A (en) | 2023-07-17 | 2023-07-17 | Insulating joint sealing packing, insulating joint sealing structure and insulating joint sealing method |
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| CN214064110U (en) * | 2020-10-26 | 2021-08-27 | 中国石油天然气集团有限公司 | Oil gas pipeline insulation joint |
| DE102021119570A1 (en) * | 2021-07-28 | 2023-02-02 | Rolf Hardorp | Insulating sealing ring, pipe flange connection and use of an insulating sealing ring |
| CN220416228U (en) * | 2023-07-17 | 2024-01-30 | 沈阳鑫联石化设备有限公司 | Insulating joint sealing filler and insulating joint sealing structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1417503A (en) * | 2001-11-07 | 2003-05-14 | 赫尔比格压缩机技术服务有限公司 | Sealing element for air compressor valve |
| EP1382896A2 (en) * | 2002-07-07 | 2004-01-21 | Walter Stucke | Pipe connection at welded branches for natural gas supply lines made of steel |
| CN1540195A (en) * | 2003-04-08 | 2004-10-27 | SGL̼�ɷݹ�˾ | Gasket ring for flange connection |
| CN103546000A (en) * | 2013-10-29 | 2014-01-29 | 上海电气电站设备有限公司 | Epoxy potting method for insulation box on end portion of electric generator |
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| CN211693910U (en) * | 2019-12-17 | 2020-10-16 | 常熟市飞奥压力容器制造有限公司 | Insulating joint with good sealing performance |
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| DE102021119570A1 (en) * | 2021-07-28 | 2023-02-02 | Rolf Hardorp | Insulating sealing ring, pipe flange connection and use of an insulating sealing ring |
| CN220416228U (en) * | 2023-07-17 | 2024-01-30 | 沈阳鑫联石化设备有限公司 | Insulating joint sealing filler and insulating joint sealing structure |
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