CN201475503U - Wall-penetrating sealing structural part with telescopic function - Google Patents
Wall-penetrating sealing structural part with telescopic function Download PDFInfo
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- CN201475503U CN201475503U CN2009203062080U CN200920306208U CN201475503U CN 201475503 U CN201475503 U CN 201475503U CN 2009203062080 U CN2009203062080 U CN 2009203062080U CN 200920306208 U CN200920306208 U CN 200920306208U CN 201475503 U CN201475503 U CN 201475503U
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- flange plate
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- conduit
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- thermal insulation
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- 238000007789 sealing Methods 0.000 title abstract description 16
- 238000009413 insulation Methods 0.000 claims description 40
- 238000003466 welding Methods 0.000 claims description 12
- 230000004323 axial length Effects 0.000 claims description 3
- 230000009931 harmful effect Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 239000012528 membrane Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 231100000614 poison Toxicity 0.000 description 3
- 230000007096 poisonous effect Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
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Abstract
The utility model discloses a wall-penetrating sealing structural part with a telescopic function. The wall-penetrating sealing structural part mainly comprises a thermal pipeline, a heat-preserving layer, a pre-embedding sleeve, a first flange joint, a corrugated pipe, a second flange joint and a necked flange. The pre-embedding sleeve is fixedly arranged on a pipeline through hole of the wall body. The thermal pipeline coated with the thermal layer penetrates through the pre-embedding sleeve. The first flange joint comprises a first flange piece fixed at the right end of the pre-embedding sleeve and a first guide pipe fixed at the right end of the first flange. The necked flange is fixed on the thermal pipeline and is arranged at the right part of the first flange joint. The second flange joint comprises a second flange piece fixed at the left end of the necked flange and a second guide pipe fixed at the left end of the second flange piece. The second guide pipe is coated at the external side of the heat-preserving layer; the first guide pipe is coated at the external side of the second guide pipe; and the first guide pipe and the second guide pipe are connected with each other in the axial direction in a sliding way. The corrugated pipe is elastically connected between the first flange piece and the second flange piece. The wall-penetrating sealing structural part has good sealing performance.
Description
Technical field
The utility model relates to the structural member through walls that is used for transmission medium in the industries such as a kind of petrochemical industry, electric power.
Background technique
In industries such as petrochemical industry, electric power, steam, liquid and other medium all need to transmit by pipeline, when pipeline when passing place such as poisonous, harmful, radiation, in (or block body) through walls process, be difficult to accomplish seal.Especially the heat distribution pipeline of nuclear power plant, when through walls because pipeline constantly is heated the thermal expansion distortion can take place in transmission medium (200-800 ℃ steam) process, also can vibrate because of the vibration of medium, make and to produce certain slit between pipeline and the body of wall, if do not take the effective seal measure, will cause the nuclear ray to penetrate by the slit between body of wall and the pipeline; In chemical industry, these pipelines are by poisonous, harmful, inflammable, explosive place the time, and its position through walls equally also can be caused the leakage of harmful matter (gas, dust etc.) because of poor sealing, cause the generation of danger.
Chinese patent literature CN201032144Y discloses a kind of wall-passing pipe of dry coke quenching residual heat boiler and the sealing configuration of membrane wall, it comprises superheater, the wall-passing pipe of vaporizer, membrane wall, backplate, corrugated expansion joint, sealing plate and collection case, its wall-passing pipe passes membrane wall fixedlys connected with the collection case, backplate, corrugated expansion joint and sealing plate are coated on membrane wall and the wall-passing pipe of collection between the case, wherein the inner encapsulation of backplate is connected on the wall-passing pipe external wall that touches peripheral membrane wall through walls, the backplate outer end is connected with corrugated expansion joint one end, the corrugated expansion joint the other end is connected with sealing plate is inner, and the sealing plate outer end is connected with the encapsulation of collection case.This sealing configuration can only guarantee sealing when wall-passing pipe generation axial deformation, and does not have heat insulation effect, can not guarantee sealing when wall-passing pipe generation radial deformation.
The model utility content
Technical problem to be solved in the utility model provides a kind of thermal distortion that can overcome because of pipeline through walls and causes the sealed type structural member through walls that produces the leakage crack between pipeline and body of wall.
The technological scheme that realizes the utility model purpose is: a kind of seal structural part through walls with Telescopic is provided, comprises heat distribution pipeline, thermal insulation layer, service sleeve, first flanged joint, bellows, second flanged joint and hubbed flange.
Service sleeve is the sleeve pipe that is fixedly installed on the pipeline via hole of body of wall, comprises the body of annulus cylindricality, and the axial length of body is greater than the thickness of body of wall.
Thermal insulation layer is a tubular thermal insulation layer, and its internal diameter is identical with the external diameter of heat distribution pipeline, and external diameter is identical with the internal diameter of body.Thermal insulation layer closely is coated on the outside of heat distribution pipeline, and it is provided with a circular groove around its periphery setting on right-hand part of body of wall.
The heat distribution pipeline that is coated with thermal insulation layer passes from service sleeve, thereby passes body of wall.
First flanged joint comprises first flange plate, and first flanged joint is by the airtight right-hand member that is fixed on service sleeve of first flange plate.Hubbed flange is fixed on the heat distribution pipeline by its neck is airtight, and is positioned at the right part of the circular groove of thermal insulation layer.Second flanged joint comprises second flange plate, and second flanged joint is by the airtight left end that is fixed on hubbed flange of second flange plate, and second flange plate is positioned at the left part of the circular groove of thermal insulation layer.Bellows is enclosed within outside the thermal insulation layer, and the left end of bellows is fixedly installed on first flange plate from the airtight welding in right side, the right-hand member of bellows is fixedly installed on second flange plate from the airtight welding in left side, makes bellows elasticity be connected between first flange plate and second flange plate.
Above-mentioned service sleeve also comprises left end flange plate that is weldingly fixed on body outside left end and the right-hand member flange plate that is weldingly fixed on body outside right-hand member.The major part of body is sealed in body of wall by concrete, and the left surface of body of wall is close on the right side of left end flange plate.The right-hand member flange plate is provided with an axial 4-8 attachment hole, and all attachment holes are centrosymmetric along the circumferential equal angles setting of disk body.
Above-mentioned seal structural part through walls with Telescopic also comprises 4-8 first connecting bolt and 4-8 second connecting bolt.
First flanged joint also comprises first conduit.First flange plate is a slip-on-welding plate flange, its ring footpath is identical with the ring footpath of the right-hand member flange plate of service sleeve, be provided with the tapped hole identical on first flange plate vertically, and the position of the attachment hole on the position of each tapped hole and the right-hand member flange plate is corresponding with the attachment hole quantity of right-hand member flange plate.First conduit is the body of an annulus cylindricality, and its internal diameter is slightly larger than the external diameter of thermal insulation layer.First conduit is fixed on first flange plate, and is positioned at the right side of first flange plate.
Each first connecting bolt screws in the tapped hole of first flange plate after passing attachment hole on the right-hand member flange plate of service sleeve respectively from left to right.
Second flanged joint also comprises second conduit.Second flange plate is a slip-on-welding plate flange, and its internal diameter is slightly larger than the external diameter of heat distribution pipeline, is provided with 4-8 tapped hole on second flange plate vertically, and all tapped holes are centrosymmetric along the circumferential equal angles setting of disk body.Second conduit is the body of an annulus cylindricality, and its internal diameter is identical with the external diameter of thermal insulation layer, and external diameter is identical with the internal diameter of first conduit.Second conduit is fixed on second flange plate, and is positioned at the left side of second flange plate.
Second conduit closely is coated on the outside of thermal insulation layer, and the left part of second conduit just in time inserts in the gap between first conduit and the thermal insulation layer, and second conduit and first conduit are slidingly connected in the axial direction, and bellows is enclosed within outside second conduit and first conduit.
Hubbed flange comprises neck and is connected the flange plate of neck left end.The airtight outside left end that is weldingly fixed on neck of flange plate.The internal diameter of neck is identical with the external diameter of heat distribution pipeline.The neck of hubbed flange is around periphery setting, airtight being weldingly fixed on the heat distribution pipeline of heat distribution pipeline.The external diameter of flange plate is identical with the external diameter of second flange plate, is provided with the identical attachment hole of quantity with the tapped hole of second flange plate on the flange plate vertically, and the position of the tapped hole on the position of each attachment hole and second flange plate is corresponding.
Each second connecting bolt screws in the tapped hole of second flange plate after passing attachment hole on the flange plate respectively from right to left.
The utlity model has positive effect: the structural member through walls with Telescopic of the present utility model has fundamentally solved wall-passing pipe and has produced a difficult problem of revealing the crack because of thermal distortion causes between pipeline and body of wall, make good seal between wall-passing pipe and the body of wall, prevent to examine the leakage of ray and all kinds of poisonous, harmful, flammable and explosive substance effectively, and simple in structure, it is convenient to implement.
Description of drawings
Fig. 1 is a kind of cross-sectional view of the present utility model.
Mark in the above-mentioned accompanying drawing is as follows:
Service sleeve 3, left end flange plate 3-1, body 3-2, right-hand member flange plate 3-3,
First flanged joint, 4, the first flange plate 4-1, the first conduit 4-2,
Bellows 5,
Second flanged joint, 6, the second flange plate 6-1, the second conduit 6-2,
Hubbed flange 7, neck 7-1, flange plate 7-2,
The first connecting bolt 8-1, the second connecting bolt 8-2,
Body of wall 9.
Embodiment
(embodiment 1)
See Fig. 1, the structural member through walls with Telescopic of present embodiment comprises heat distribution pipeline 1, thermal insulation layer 2, service sleeve 3, first flanged joint 4, bellows 5, second flanged joint 6,7,8 first connecting bolt 8-1 of hubbed flange and 8 second connecting bolt 8-2.
Still see Fig. 1, service sleeve 3 is the sleeve pipe on the pipeline via hole that is fixedly installed on body of wall 9, comprise the annulus cylindricality body 3-2, be weldingly fixed on the left end flange plate 3-1 of body 3-2 outside left end and be weldingly fixed on the right-hand member flange plate 3-3 of body 3-2 outside right-hand member.And the axial length of body 3-2 is slightly larger than the thickness of body of wall 9.The major part of body 3-2 is sealed in body of wall 9 by concrete, and the right side of left end flange plate 3-1 is close to the left surface of body of wall 9, so between the right flank of the left side of right-hand member flange plate 3-3 and body of wall 9 certain distance is arranged.Right-hand member flange plate 3-3 is provided with 8 axial attachment holes, and all attachment holes are centrosymmetric along the circumferential equal angles setting of disk body.
Still see Fig. 1, heat distribution pipeline 1 is a kind of high temperature resistant pipeline of transmission steam, liquid and other medium, and its pipe thickness is 3 to 20 millimeters, has the physical property of expanding with heat and contract with cold.
The heat distribution pipeline 1 that is coated with thermal insulation layer 2 passes from service sleeve 3, thereby passes body of wall 9.
First flanged joint 4 comprises the first flange plate 4-1 and the first conduit 4-2.The first flange plate 4-1 is a slip-on-welding plate flange, its ring footpath is identical with the ring footpath of the right-hand member flange plate 3-3 of service sleeve 3, be provided with the identical tapped hole of attachment hole quantity with right-hand member flange plate 3-3 on the first flange plate 4-1 vertically, and the position of the attachment hole on the position of each tapped hole and the right-hand member flange plate 3-3 is corresponding.
Screw in the tapped hole of the first flange plate 4-1 pass the attachment hole on the right-hand member flange plate 3-3 of service sleeve 3 respectively from left to right by 8 first connecting bolt 8-1 after, thereby first flanged joint 4 is fixed on the right-hand member of service sleeve 3.
The first conduit 4-2 is the body of an annulus cylindricality, and its internal diameter is slightly larger than the external diameter of thermal insulation layer 2.The first conduit 4-2 is fixed on the first flange plate 4-1, and is positioned at the right side of the first flange plate 4-1, has the certain thickness annular space of one deck between conduit 4-2 and the thermal insulation layer 2 thereby make to win.
Second flanged joint 6 comprises the second flange plate 6-1 and the second conduit 6-2.The second flange plate 6-1 is a slip-on-welding plate flange, and its internal diameter is slightly larger than the external diameter of heat distribution pipeline 1, is provided with 8 tapped holes on the second flange plate 6-1 vertically, and all tapped holes are centrosymmetric along the circumferential equal angles setting of disk body.
The second conduit 6-2 is the body of an annulus cylindricality, and its internal diameter is identical with the external diameter of thermal insulation layer 2, and external diameter is identical with the internal diameter of the first conduit 4-2.The second conduit 6-2 is fixed on the second flange plate 6-1, and is positioned at the left side of the second flange plate 6-1.
The second flange plate 6-1 of second flanged joint 6 is positioned at the left part of the circular groove of thermal insulation layer 2.The second conduit 6-2 closely is coated on the outside of thermal insulation layer 2, and the left part of the second conduit 6-2 just in time inserts in the gap between the first conduit 4-2 and the thermal insulation layer 2, and the second conduit 6-2 and the first conduit 4-2 are slidingly connected in the axial direction.
Hubbed flange 7 comprises neck 7-1 and is connected the flange plate 7-2 of neck 7-1 left end.The airtight outside left end that is weldingly fixed on neck 7-1 of flange plate 7-2; The internal diameter of the neck 7-1 all external diameter with heat distribution pipeline 1 is identical.The external diameter of flange plate 7-2 is identical with the external diameter of the second flange plate 6-1, be provided with the identical attachment hole of quantity with the tapped hole of the second flange plate 6-1 on the flange plate 7-2 vertically, and the position of the tapped hole on the position of each attachment hole and the second flange plate 6-1 is corresponding.
The neck 7-1 of hubbed flange 7 centers on periphery setting, airtight being weldingly fixed on the heat distribution pipeline 1 of heat distribution pipeline 1, and is positioned at the right part of the circular groove of thermal insulation layer 2.
Screw in the tapped hole of the second flange plate 6-1 after passing attachment hole on the flange plate 7-2 respectively from right to left by 8 second connecting bolt 8-2, thereby second flanged joint 6 is fixed on the left end of hubbed flange 7.
Bellows 5 is enclosed within outside the first conduit 4-1 and the second conduit 4-2, the left end of bellows 5 is fixedly installed on the first flange plate 4-1 from the airtight welding in right side, the right-hand member of bellows 5 is fixedly installed on the second flange plate 6-1 from the airtight welding in left side, makes bellows 5 elasticity be connected between the first flange plate 4-1 and the second flange plate 6-1.
Claims (3)
1. the seal structural part through walls with Telescopic comprises heat distribution pipeline (1) and bellows (5), it is characterized in that: also comprise thermal insulation layer (2), service sleeve (3), first flanged joint (4), second flanged joint (6) and hubbed flange (7);
Service sleeve (3) is the sleeve pipe on the pipeline via hole that is fixedly installed on body of wall (9), comprises the body (3-2) of annulus cylindricality, and the axial length of body (3-2) is greater than the thickness of body of wall (9);
Thermal insulation layer (2) is a tubular thermal insulation layer, and its internal diameter is identical with the external diameter of heat distribution pipeline (1), and external diameter is identical with the internal diameter of body (3-2); Thermal insulation layer (2) closely is coated on the outside of heat distribution pipeline (1), and it is provided with a circular groove around its periphery setting on right-hand part of body of wall (9);
The heat distribution pipeline (1) that is coated with thermal insulation layer (2) passes from service sleeve (3), thereby passes body of wall (9);
First flanged joint (4) comprises first flange plate (4-1), and first flanged joint (4) is by the airtight right-hand member that is fixed on service sleeve (3) of first flange plate (4-1); Hubbed flange (7) is fixed on the heat distribution pipeline (1) by its neck is airtight, and is positioned at the right part of the circular groove of thermal insulation layer (2); Second flanged joint (6) comprises second flange plate (6-1), and second flanged joint (6) is by the airtight left end that is fixed on hubbed flange (7) of second flange plate (6-1), and second flange plate (6-1) is positioned at the left part of the circular groove of thermal insulation layer (2); Bellows (5) is enclosed within outside the thermal insulation layer (2), and the left end of bellows (5) is fixedly installed on first flange plate (4-1) from the airtight welding in right side, the right-hand member of bellows (5) is fixedly installed on second flange plate (6-1) from the airtight welding in left side, makes bellows (5) elasticity be connected between first flange plate (4-1) and second flange plate (6-1).
2. a kind of seal structural part through walls with Telescopic according to claim 1 is characterized in that: described service sleeve (3) also comprises left end flange plate (3-1) that is weldingly fixed on body (3-2) outside left end and the right-hand member flange plate (3-3) that is weldingly fixed on body (3-2) outside right-hand member; The major part of body (3-2) is sealed in body of wall (9) by concrete, and the left surface of body of wall (9) is close on the right side of left end flange plate (3-1); Right-hand member flange plate (3-3) is provided with an axial 4-8 attachment hole, and all attachment holes are centrosymmetric along the circumferential equal angles setting of disk body.
3. a kind of seal structural part through walls with Telescopic according to claim 1 and 2 is characterized in that: also comprise 4-8 first connecting bolt (8-1) and 4-8 second connecting bolt (8-2);
First flanged joint (4) also comprises first conduit (4-2); First flange plate (4-1) is a slip-on-welding plate flange, its ring footpath is identical with the ring footpath of the right-hand member flange plate (3-3) of service sleeve (3), be provided with the identical tapped hole of attachment hole quantity with right-hand member flange plate (3-3) on first flange plate (4-1) vertically, and the position of the attachment hole on the position of each tapped hole and the right-hand member flange plate (3-3) is corresponding; First conduit (4-2) is the body of an annulus cylindricality, and its internal diameter is slightly larger than the external diameter of thermal insulation layer (2); First conduit (4-2) is fixed on first flange plate (4-1), and is positioned at the right side of first flange plate (4-1);
Each first connecting bolt (8-1) screws in the tapped hole of first flange plate (4-1) after passing attachment hole on the right-hand member flange plate (3-3) of service sleeve (3) respectively from left to right;
Second flanged joint (6) also comprises second conduit (6-2); Second flange plate (6-1) is a slip-on-welding plate flange, and its internal diameter is slightly larger than the external diameter of heat distribution pipeline (1), is provided with 4-8 tapped hole on second flange plate (6-1) vertically, and all tapped holes are centrosymmetric along the circumferential equal angles setting of disk body; Second conduit (6-2) is the body of an annulus cylindricality, and its internal diameter is identical with the external diameter of thermal insulation layer (2), and external diameter is identical with the internal diameter of first conduit (4-2); Second conduit (6-2) is fixed on second flange plate (6-1), and is positioned at the left side of second flange plate (6-1);
Second conduit (6-2) closely is coated on the outside of thermal insulation layer (2), and the left part of second conduit (6-2) just in time inserts in the gap between first conduit (4-2) and the thermal insulation layer (2), second conduit (6-2) is slidingly connected in the axial direction with first conduit (4-2), and bellows (5) is enclosed within outside second conduit (6-2) and first conduit (4-2);
Hubbed flange (7) comprises neck (7-1) and is connected the flange plate (7-2) of neck (7-1) left end; The airtight outside left end that is weldingly fixed on neck (7-1) of flange plate (7-2); The internal diameter of neck (7-1) is identical with the external diameter of heat distribution pipeline (1); The neck (7-1) of hubbed flange (7) is around periphery setting, airtight being weldingly fixed on the heat distribution pipeline (1) of heat distribution pipeline (1); The external diameter of flange plate (7-2) is identical with the external diameter of second flange plate (6-1), be provided with the identical attachment hole of quantity with the tapped hole of second flange plate (6-1) on the flange plate (7-2) vertically, and the position of the tapped hole on the position of each attachment hole and second flange plate (6-1) is corresponding;
Each second connecting bolt (8-2) screws in the tapped hole of second flange plate (6-1) after passing attachment hole on the flange plate (7-2) respectively from right to left.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203062080U CN201475503U (en) | 2009-07-15 | 2009-07-15 | Wall-penetrating sealing structural part with telescopic function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203062080U CN201475503U (en) | 2009-07-15 | 2009-07-15 | Wall-penetrating sealing structural part with telescopic function |
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| Publication Number | Publication Date |
|---|---|
| CN201475503U true CN201475503U (en) | 2010-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203062080U Expired - Fee Related CN201475503U (en) | 2009-07-15 | 2009-07-15 | Wall-penetrating sealing structural part with telescopic function |
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| CN (1) | CN201475503U (en) |
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980170A (en) * | 2012-12-19 | 2013-03-20 | 中国船舶重工集团公司第七�三研究所 | Wall-through sealing structure of supercharged boiler |
| CN104405979A (en) * | 2014-11-07 | 2015-03-11 | 马钢(集团)控股有限公司 | Wear-resistant high-temperature-resistant connection buffering device for dry quenching conveying pipeline |
| CN104455755A (en) * | 2014-12-03 | 2015-03-25 | 浙江省火电建设公司 | Waterproof sealing device of underground thrust wall feed-through sleeve |
| CN106195275A (en) * | 2016-08-31 | 2016-12-07 | 南京慧淳环保科技有限公司 | A kind of Z-type sealing ring |
| CN106286997A (en) * | 2016-10-10 | 2017-01-04 | 无锡华光锅炉股份有限公司 | A kind of vertical exhaust-heat boiler wall pipe sealing device |
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| CN108204480A (en) * | 2016-12-20 | 2018-06-26 | 核工业西南物理研究院 | A mechanical penetration assembly for piping systems |
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Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980170A (en) * | 2012-12-19 | 2013-03-20 | 中国船舶重工集团公司第七�三研究所 | Wall-through sealing structure of supercharged boiler |
| CN104405979A (en) * | 2014-11-07 | 2015-03-11 | 马钢(集团)控股有限公司 | Wear-resistant high-temperature-resistant connection buffering device for dry quenching conveying pipeline |
| CN104405979B (en) * | 2014-11-07 | 2016-08-31 | 马钢(集团)控股有限公司 | Dry coke quenching conveyance conduit Wear-resistant, high-temperature resistant connects buffer unit |
| CN104455755A (en) * | 2014-12-03 | 2015-03-25 | 浙江省火电建设公司 | Waterproof sealing device of underground thrust wall feed-through sleeve |
| CN106195275A (en) * | 2016-08-31 | 2016-12-07 | 南京慧淳环保科技有限公司 | A kind of Z-type sealing ring |
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| CN111577999A (en) * | 2020-06-12 | 2020-08-25 | 武汉麦康德设备有限公司 | Marine external pressure second grade vibration isolation leads to cabin and takes over |
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