CN104061398B - The processing method of rubber sealing bypass pressure balancing sleeve compensator - Google Patents
The processing method of rubber sealing bypass pressure balancing sleeve compensator Download PDFInfo
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- CN104061398B CN104061398B CN201410289996.2A CN201410289996A CN104061398B CN 104061398 B CN104061398 B CN 104061398B CN 201410289996 A CN201410289996 A CN 201410289996A CN 104061398 B CN104061398 B CN 104061398B
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- pipe connected
- compensator
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Classifications
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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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L51/00—Expansion-compensation arrangements for pipe-lines
-
- 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
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/12—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement
- F16L27/125—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement having longitudinal and rotary movement
Abstract
The present invention relates to a kind of rubber sealing bypass pressure balancing sleeve compensator, including trocar sheath, have the core pipe connected pipe A and core pipe connected pipe B of pod apertures, reducing connecting tube, rubber sealing assembly, oval convex blind plate and air tube.Annular seal space is formed by rubber sealing assembly between described trocar sheath and internal pipeline, annular seal space is formed by rubber sealing assembly between reducing connecting tube and both sides ellipse convex blind plate, core pipe connected pipe A can realize the compensating action to pipeline thermal deformation along two rubber sealing component slippage by the compression of inner sealing chamber.Compared with prior art, the invention has the beneficial effects as follows: 1) seal reliable, long-acting, Maintenance free in running；2) will not outwards transmit internal pressure thrust, frictional force is little, can significantly reduce support bracket fastened force request, reduce support bracket fastened construction cost and material cost；3) only need to be connected two end interfaces with the pipeline welding that is connected when installing, easy for installation.
Description
Technical field
The present invention relates to a kind of compensator, particularly relate to a kind of rubber sealing bypass pressure balancing sleeve compensator.
Background technology
Compensator is practised and is also expansion joint or telescopic joint, of many uses in modern industry.When heating system is in order to prevent heat supply pipeline from heating up, pipe deforming or destruction is caused due to thermal stretching or temperature stress, compensator is generally set on pipeline, to compensate the thermal stretching of pipeline, thus reduces the stress of tube wall and the active force acted on valve member or supporting structure.
When medium is hot water, pressure balanced compensator used in engineering has various ways: if employing metal bellows is the compensator of compensating element, or use the compensator etc. of flexible graphite sealing.The cost of the pressure balance type compensator wherein using metal bellows to be compensating unit is higher, and elastic reaction is bigger；And using the pressure balance type compensator frictional force of flexible graphite sealing very greatly, above type of pressure balanced compensator all cannot meet high trestle, pipe trench, low-angle break etc. cannot make the compensation needs of high thrust fixed support node.At present, also there is no a kind of to be applicable to that hot water is built on stilts, trench pipeline small rack thrust or the pressure-balancing type compensator without holder design.
Summary of the invention
The present invention overcomes the deficiencies in the prior art, it is provided that the multiple rubber ring of a kind of employing is combined sealing and utilize medium pressure itself strengthening sealing effectiveness, frictional force little and economy more preferable rubber sealing bypass pressure Balance-type Sleeve Compensator.
In order to achieve the above object, the present invention realizes by the following technical solutions:
The processing method of rubber sealing bypass pressure balancing sleeve compensator, described rubber sealing bypass pressure balancing sleeve compensator includes trocar sheath, has the core pipe connected pipe A and core pipe connected pipe B of pod apertures, reducing connecting tube, rubber sealing assembly, oval convex blind plate and air tube；Described rubber sealing assembly is at least 2 groups, it is sleeved on core pipe connected pipe A, being positioned at that rubber sealing assembly and the trocar sheath in outside is fixing to be connected, be positioned at the rubber sealing assembly of inner side and fix with reducing connecting tube and be connected, the other end of reducing connecting tube and trocar sheath is fixed with core pipe connected pipe B respectively and is connected；Oval convex blind plate is at least 2, is separately fixed at core pipe connected pipe A pipe end behind reducing connecting tube side and reducing connecting tube undergauge；Air tube one end passes outside ellipse convex blind plate, and the other end stretches out from core pipe connected pipe B tube wall；The processing method of rubber sealing bypass pressure balancing sleeve compensator is as follows:
Processing core pipe connected pipe A, outside before Surface Machining, is connected on one end of core pipe connected pipe by anti-slip boxing, and elliptical convex blind plate is welded on inside the mouth of pipe of same one end；After having welded, carry out roughing；After roughing completes, offering pod apertures, pod apertures verge of opening and core pipe connected pipe A are compensation dosage+trocar sheath length+30mm without anti-slip ring one end end face distance, offer several pod apertures according to circumference uniform distribution and dimensional requirement；After pod apertures is offered, carrying out Surface Finishing to regulation roughness requirements, then hard chrome plating processes.
Be directed to band, O-shaped rubber ring, axle YX shape sealing rubber ring are arranged in the respective grooves sealing sleeve pipe circumferential inner surface, complete rubber sealing assembling components；1 group of rubber sealing assembly is sleeved on core pipe connected pipe A；Ensure that the distance sealing the end distance nearest end face of anti-slip ring of sleeve pipe is 30～40mm, by itself and reducing connecting welding；Another block elliptical convex blind plate is welded at reducing connecting tube pipe end, the through hole being connected with air tube it is reserved with on it, air tube is inserted the through hole of elliptical convex blind plate and welds, vertical short tube after air tube elbow is fixed after core pipe connected pipe B has connected again, reserving installation hole on core pipe connected pipe B；
The reducing connecting tube other end is welded with core pipe connected pipe B, the ellipse head of trocar sheath side is welded with the tube wall of black box B；Again another group rubber sealing assembly is sleeved on core pipe connected pipe A, is sealed against sleeve pipe inner side end and welds with the opposite side ellipse head of trocar sheath；Finally, the vertical short tube of air tube is inserted by the air tube preformed hole on core pipe connected pipe B and docks with the elbow of air tube and weld, the more vertical short tube of air tube is welded with core pipe connected pipe B.
Described rubber sealing assembly is made up of the guidance tape sealing sleeve pipe and be arranged on its inner periphery and rubber ring, described guidance tape is placed in rubber ring both sides, for politef copper powder guidance tape, described rubber ring is respectively ethylene propylene diene rubber O RunddichtringO and EPDM axle YX shape sealing rubber ring.
Described pod apertures is several, equivalently-sized and be uniformly distributed along the circumference, and on core pipe connected pipe A and core pipe connected pipe B, the axis of corresponding pod apertures is located along the same line；The sectional area summation offering pod apertures on each core pipe connected pipe is equal to actual internal area+0～the 20mm of this core pipe connected pipe2。
Described trocar sheath and core pipe connected pipe A, the circular passage formed between core pipe connected pipe B and reducing connecting tube minimum actual internal area equal to the maximum flow sectional area+0～20mm of core pipe connected pipe2, trocar sheath two ends are with ellipse head transition.
Described core pipe connected pipe A sets up defences near one end of reducing connecting tube draw ring, it is 30～40mm with the spacing in the sealing sleeve pipe most proximal end face of inner side rubber sealing assembly, the minimum distance of the sealing shroud end surfaces distance pod apertures end face of outside rubber sealing assembly is 30mm～40mm, and the distance of above-mentioned 2 sealing sleeve pipe other ends distance nearest end face of pod apertures is equal to specified compensation dosage+0～the 10mm of compensator.
The length of described reducing connecting tube big footpath section is equal to specified compensation dosage+50～the 100mm of compensator, and the distance sealing distance core pipe connected pipe A outer face, sleeve pipe outer face of outside rubber sealing assembly is equal to specified compensation dosage+50～the 100mm of compensator.
The medium of described compensator application is that temperature is less than 150 DEG C, the pressure hot aqueous medium less than 2.5MPa.
The Surface Machining roughness of described core pipe connected pipe A and core pipe connected pipe B is 0.8～1.6 μm, plating hard chromium on surface, thickness of coating 0.03-0.05mm.
Described fixing connected mode is welding, and all circular welds all use argon Electricity Federation weldering mode to weld and through x-ray inspection inspection.
Described compensator is decored the outer all surface of pipe connected pipe A exposed parts and is checked through hydrostatic test through antirust treatment, sealing cavity.
Compared with prior art, the invention has the beneficial effects as follows:
1) there is reliable, long-acting sealing property, Maintenance free in running；
2) internal pressure thrust of medium is balanced by compensator self structure, will not outwards transmit, frictional force is far smaller than the compensator using metal bellows or flexible graphite packing to seal, and can significantly reduce support bracket fastened force request, reduce support bracket fastened construction cost and material cost；
3) only need to be connected two end interfaces with the pipeline welding that is connected when installing, easy for installation.
Accompanying drawing explanation
Fig. 1 is the structural representation of rubber sealing bypass pressure balancing sleeve compensator of the present invention.
In figure: 1. core pipe connected pipe A 2. rubber sealing assembly 2-1. seals the oval convex blind plate 8. reducing connecting tube 9. core pipe connected pipe B 10. air tube 11. annular seal space a 12. annular seal space b of sleeve pipe 2-2. guidance tape 2-3.O type rubber ring 2-4. axle YX shape sealing rubber ring 3. ellipse head 4. pod apertures 5. trocar sheath 6. anti-slip ring 7.
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described further:
nullSee Fig. 1，It it is the structural representation of rubber sealing bypass pressure balancing sleeve compensator of the present invention，Rubber sealing bypass pressure balancing sleeve compensator of the present invention，Including trocar sheath (5)、Have core pipe connected pipe A (1) and core pipe connected pipe B (9) of pod apertures (4)、Reducing connecting tube (8)、Rubber sealing assembly (2)、Oval convex blind plate (7) and air tube (10)，Described rubber sealing assembly (2) at least 2 groups，It is sleeved on core pipe connected pipe A (1)，Sealing sleeve pipe (2-1) one end of the rubber sealing assembly (2) being positioned at outside is fixing with trocar sheath (5) to be connected，Sealing sleeve pipe (2-1) one end of the rubber sealing assembly (2) being positioned at inner side is fixing with reducing connecting tube (8) to be connected，Reducing connecting tube (8) other end is fixing with core pipe connected pipe B (9) to be connected，The other end of trocar sheath (5) is also fixing with core pipe connected pipe B (9) to be connected；Oval convex blind plate (7) at least 2, it is separately fixed at core pipe connected pipe A (1) pipe end behind reducing connecting tube (8) side and reducing connecting tube (8) undergauge, air tube (10) one end passes outside ellipse convex blind plate (7), and the other end stretches out from core pipe connected pipe B (9) tube wall.
Described rubber sealing assembly (2) is made up of sealing sleeve pipe (2-1) and guidance tape (2-1) and the rubber ring being arranged on its inner periphery, described guidance tape (2-2) is placed in rubber ring both sides, for politef copper powder guidance tape, described rubber ring is respectively ethylene propylene diene rubber O RunddichtringO (2-3) and EPDM axle YX shape sealing rubber ring (2-4).
Described pod apertures (4) is several, equivalently-sized and be uniformly distributed along the circumference, and the axis of core pipe connected pipe A (1) and the upper corresponding pod apertures (4) of core pipe connected pipe B (9) is located along the same line；The sectional area summation offering pod apertures (4) on each core pipe connected pipe is equal to actual internal area+0～the 20mm of this core pipe connected pipe2。
The minimum actual internal area of the circular passage formed between described trocar sheath (5) and core pipe connected pipe A (1), core pipe connected pipe B (9) and reducing connecting tube (8) is equal to the maximum flow sectional area+0～20mm of core pipe connected pipe2, trocar sheath (5) two ends are with ellipse head (3) transition.
Described core pipe connected pipe A (1) is set up defences near one end of reducing connecting tube (8) draw ring (6), between itself and sealing sleeve pipe (2-1) end face recently of inner side rubber sealing assembly (2), distance is 30～40mm, the minimum distance of sealing sleeve pipe (2-1) end face distance pod apertures (4) end face in outside rubber sealing assembly (2) is 30mm～40mm, and the distance of above-mentioned 2 sealing sleeve pipe (2-1) other ends distance pod apertures (4) end face recently is equal to specified compensation dosage+0～the 10mm of compensator.
The length of described reducing connecting tube (8) big footpath section is equal to specified compensation dosage+50～the 100mm of compensator, and the distance of distance core pipe connected pipe A (1) outer face, sealing sleeve pipe (2-1) outer face in outside rubber sealing assembly (2) is equal to specified compensation dosage+50～the 100mm of compensator.
The medium of described compensator application is that temperature is less than 150 DEG C, the pressure hot aqueous medium less than 2.5MPa.
The Surface Machining roughness of described core pipe connected pipe A (1) and core pipe connected pipe B (9) is 0.8～1.6 μm, plating hard chromium on surface, thickness of coating 0.03-0.05mm.
Described fixing connected mode is welding, and all circular welds all use argon Electricity Federation weldering mode to weld and through x-ray inspection inspection.
Described compensator is decored the outer all surface of pipe connected pipe A (1) exposed parts and is checked through hydrostatic test through antirust treatment, sealing cavity (11), (12).
The course of processing of rubber sealing bypass pressure balancing sleeve compensator of the present invention is as follows:
Processing core pipe connected pipe A (1), outside before Surface Machining, is welded on one end of core pipe connected pipe (1) by anti-slip ring (6), and elliptical convex blind plate (7) is welded on inside the mouth of pipe of same one end；After having welded, carry out roughing；After roughing completes, offer pod apertures (4), pod apertures (4) verge of opening and core pipe connected pipe A (1) are (compensation dosage+trocar sheath length+30) mm without anti-slip ring one end end face distance, offer several pod apertures (4) according to circumference uniform distribution and dimensional requirement.After pod apertures (4) is offered, carrying out Surface Finishing to regulation roughness requirements, then hard chrome plating processes.
It is directed to carry (2-2), O-shaped rubber ring (2-3), axle YX shape sealing rubber ring (2-4) to be arranged in the respective grooves sealing sleeve pipe (2-1) circumferential inner surface, completes rubber sealing assembly (2) and assemble.1 group of rubber sealing assembly (2) is sleeved on core pipe connected pipe A (1)；Ensure that the distance sealing end distance anti-slip ring (6) end face recently of sleeve pipe (2-1) is 30～40mm, it is welded with reducing connecting tube (8)；Pipe end at reducing connecting tube (8) welds another block elliptical convex blind plate (7), the through hole being connected with air tube (10) it is reserved with on it, air tube (10) is inserted the through hole of elliptical convex blind plate (7) and welds, vertical short tube after air tube (10) elbow is fixed after core pipe connected pipe B (9) has connected again, the upper reserving installation hole of core pipe connected pipe B (9).
Reducing connecting tube (8) other end is welded with core pipe connected pipe B (9), the ellipse head (3) of trocar sheath (5) side is welded with the tube wall of black box B (9).Again another group rubber sealing assembly (2) is sleeved on core pipe connected pipe A (1), is sealed against sleeve pipe (2-1) inner side end and welds with the opposite side ellipse head (3) of trocar sheath (5).Finally, the vertical short tube of air tube (10) is inserted by the air tube preformed hole on core pipe connected pipe B (9) and docks with the elbow of air tube (10) and weld, the more vertical short tube of air tube (10) is welded with core pipe connected pipe B (9).
Described ethylene propylene diene rubber O RunddichtringO (2-3) and EPDM Yx profile shaft seal the size and dimension of sealing ring (2-4) and determine according to seal request.
The described all circumferential welded seams being welded to connect are pressure-bearing weld seam, use argon Electricity Federation weldering mode weld and carry out x-ray inspection inspection.
Annular seal space need to carry out hydrostatic test inspection, and wherein the hydrostatic test inspection of annular seal space a (11) should be welded to connect in trocar sheath (5) and carry out before, and compensator overall package carries out hydrostatic test inspection after completing again.
During use, air tube (10) port leaning out core pipe connected pipe B (9) is placed down.
The operation principle of rubber sealing bypass pressure balancing sleeve compensator of the present invention is: during work, core pipe connected pipe B (9) side is connected with fixation means, and core pipe connected pipe A (1) side is connected with pipeline.Annular seal space b (12) is formed by rubber sealing assembly (2) between trocar sheath (5) and internal pipeline, annular seal space a (11) is formed by rubber sealing assembly between reducing connecting tube (8) and both sides ellipse convex blind plate (7), pipeline expanded by heating extends, promote core pipe connected pipe A (1) to slide along two rubber sealing assemblies (2), realize the compensating action to pipeline thermal deformation by annular seal space a (11) compression.Annular seal space a (11) by compression after, its air pressure by air tube (10) discharge.Medium enters the annular seal space b (12) formed by trocar sheath and internal pipeline by the pod apertures (4) on core pipe connected pipe A (1), then enters core pipe connected pipe B (9) by the pod apertures (4) on core pipe connected pipe B (9).
Claims (10)
1. the processing method of rubber sealing bypass pressure balancing sleeve compensator, it is characterised in that described rubber sealing bypasses
Pressure balance sleeve expansion joint includes trocar sheath, has the core pipe connected pipe A and core pipe connected pipe B of pod apertures, reducing connection
Pipe, rubber sealing assembly, oval convex blind plate and air tube；Described rubber sealing assembly is at least 2 groups, is sleeved on core pipe
In connecting tube A, be positioned at that rubber sealing assembly and the trocar sheath in outside is fixing to be connected, be positioned at inside rubber sealing assembly and change
Footpath connecting tube is fixing to be connected, and the other end of reducing connecting tube and trocar sheath is fixing with core pipe connected pipe B respectively to be connected；Oval convex
Shape blind plate is at least 2, is separately fixed at core pipe connected pipe A behind reducing connecting tube side and reducing connecting tube undergauge
Pipe end；Air tube one end passes outside ellipse convex blind plate, and the other end stretches out from core pipe connected pipe B tube wall；By rubber sealing
The processing method of logical pressure balance sleeve expansion joint is as follows:
Processing core pipe connected pipe A, outside before Surface Machining, is connected on one end of core pipe connected pipe by anti-slip boxing, oval convex
Type blind plate is welded on inside the mouth of pipe of same one end；After having welded, carry out roughing；After roughing completes, offer pod apertures,
Pod apertures verge of opening and core pipe connected pipe A are compensation dosage+trocar sheath length+30mm without anti-slip ring one end end face distance, press
Several pod apertures is offered according to circumference uniform distribution and dimensional requirement；After pod apertures is offered, carry out Surface Finishing coarse to regulation
Degree requirement, then hard chrome plating processes；
Be directed to band, O-shaped rubber ring, axle YX shape sealing rubber ring are arranged on the corresponding ditch sealing sleeve pipe circumferential inner surface
In groove, complete rubber sealing assembling components；1 group of rubber sealing assembly is sleeved on core pipe connected pipe A；Ensure sealing shroud
The distance of the end distance nearest end face of anti-slip ring of pipe is 30～40mm, by itself and reducing connecting welding；Connect at reducing
Pipe pipe end welds another block elliptical convex blind plate, and it is reserved with the through hole being connected with air tube, is inserted by air tube oval convex
The through hole of type blind plate also welds, and the vertical short tube after air tube elbow is fixed after core pipe connected pipe B has connected again,
Reserving installation hole on core pipe connected pipe B；
The reducing connecting tube other end is welded with core pipe connected pipe B, by the ellipse head of trocar sheath side with black box B's
Tube wall welds；Again another group rubber sealing assembly is sleeved on core pipe connected pipe A, is sealed against sleeve pipe inner side end with outer
The opposite side ellipse head welding of sleeve pipe；Finally, the vertical short tube of air tube is pre-by the air tube on core pipe connected pipe B
Box out to insert and dock with the elbow of air tube and weld, the more vertical short tube of air tube is welded with core pipe connected pipe B.
The processing method of rubber sealing bypass pressure balancing sleeve compensator the most according to claim 1, its feature exists
In, described rubber sealing assembly is made up of the guidance tape sealing sleeve pipe and be arranged on its inner periphery and rubber ring, described guiding
Band is placed in rubber ring both sides, and for politef copper powder guidance tape, described rubber ring is respectively ethylene propylene diene rubber O type and seals
Circle and EPDM axle YX shape sealing rubber ring.
The processing method of rubber sealing bypass pressure balancing sleeve compensator the most according to claim 1, its feature exists
In, described pod apertures is several, equivalently-sized and be uniformly distributed along the circumference, and corresponding on core pipe connected pipe A and core pipe connected pipe B
The axis of pod apertures is located along the same line；The sectional area summation of pod apertures is offered equal to this core Guan Lian on each core pipe connected pipe
The actual internal area+0 of adapter～20mm2。
The processing method of rubber sealing bypass pressure balancing sleeve compensator the most according to claim 1, its feature exists
In, described trocar sheath and core pipe connected pipe A, the minimum of the circular passage of formation between core pipe connected pipe B and reducing connecting tube
Actual internal area is equal to the maximum flow sectional area+0～20mm of core pipe connected pipe2, trocar sheath two ends are with ellipse head transition.
The processing method of rubber sealing bypass pressure balancing sleeve compensator the most according to claim 1, its feature exists
Set up defences near one end of reducing connecting tube draw ring in, described core pipe connected pipe A, its sealing with inner side rubber sealing assembly
Between the nearest end face of sleeve pipe, distance is 30～40mm, the sealing shroud end surfaces distance pod apertures end face of outside rubber sealing assembly
Minimum distance be 30mm～40mm, the distance of above-mentioned 2 sealing sleeve pipe other ends distance nearest end face of pod apertures is equal to
The specified compensation dosage+0 of compensator～10mm.
The processing method of rubber sealing bypass pressure balancing sleeve compensator the most according to claim 1, its feature exists
In, the length of described reducing connecting tube big footpath section is equal to specified compensation dosage+50～100mm, the outside rubber sealing group of compensator
Part seal sleeve pipe outer face distance core pipe connected pipe A outer face distance equal to compensator specified compensation dosage+50～
100mm。
The processing method of rubber sealing bypass pressure balancing sleeve compensator the most according to claim 1, its feature exists
In, the medium of described compensator application is that temperature is less than 150 DEG C, the pressure hot aqueous medium less than 2.5MPa.
The processing method of rubber sealing bypass pressure balancing sleeve compensator the most according to claim 1, its feature exists
In, the Surface Machining roughness of described core pipe connected pipe A and core pipe connected pipe B is 0.8～1.6 μm, plating hard chromium on surface,
Thickness of coating 0.03-0.05mm.
The processing method of rubber sealing bypass pressure balancing sleeve compensator the most according to claim 1, its feature exists
In, described fixing connected mode is welding, and all circular welds all use argon Electricity Federation weldering mode to weld and examine through x-ray inspection
Look into.
The processing method of rubber sealing bypass pressure balancing sleeve compensator the most according to claim 1, its feature exists
In, described compensator is decored all surface outside pipe connected pipe A exposed parts and, through antirust treatment, is sealed cavity through hydrostatic test
Inspection.
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| CN201410289996.2A CN104061398B (en) | 2014-06-25 | 2014-06-25 | The processing method of rubber sealing bypass pressure balancing sleeve compensator |
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| CN104061398B true CN104061398B (en) | 2016-08-24 |
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| CN108036971B (en) * | 2017-11-17 | 2020-08-07 | 深圳市广汇源环境水务有限公司 | Environment-friendly sampling device special for water body detection |
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| DE3310162A1 (en) * | 1983-03-21 | 1984-10-04 | Bundesrepublik Deutschland, vertreten durch den Bundesminister der Verteidigung, dieser vertreten durch den Präsidenten des Bundesamtes für Wehrtechnik und Beschaffung, 5400 Koblenz | Axial movement element |
| CN102913708A (en) * | 2012-09-27 | 2013-02-06 | 江苏远通波纹管有限公司 | Self-balancing sleeve compensator |
| CN203594908U (en) * | 2013-11-29 | 2014-05-14 | 中冶东方工程技术有限公司 | Bypass type balancing sleeve compensator |
| CN103822041A (en) * | 2014-03-12 | 2014-05-28 | 江苏鑫晟波纹管有限公司 | Single straight-pipe bypass external pressure type pressure balancing expansion joint |
| CN103836292A (en) * | 2014-03-19 | 2014-06-04 | 江苏亚星波纹管有限公司 | Compound straight pipe bypass externally-pressing type pressure balance expansion joint |
| CN203979744U (en) * | 2014-06-25 | 2014-12-03 | 苏荣华 | Rubber sealing bypass pressure balancing sleeve compensator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05115577A (en) * | 1991-05-21 | 1993-05-14 | Nohmi Bosai Ltd | Piping joint for sprinkler fire extinguishing facility |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3310162A1 (en) * | 1983-03-21 | 1984-10-04 | Bundesrepublik Deutschland, vertreten durch den Bundesminister der Verteidigung, dieser vertreten durch den Präsidenten des Bundesamtes für Wehrtechnik und Beschaffung, 5400 Koblenz | Axial movement element |
| CN102913708A (en) * | 2012-09-27 | 2013-02-06 | 江苏远通波纹管有限公司 | Self-balancing sleeve compensator |
| CN203594908U (en) * | 2013-11-29 | 2014-05-14 | 中冶东方工程技术有限公司 | Bypass type balancing sleeve compensator |
| CN103822041A (en) * | 2014-03-12 | 2014-05-28 | 江苏鑫晟波纹管有限公司 | Single straight-pipe bypass external pressure type pressure balancing expansion joint |
| CN103836292A (en) * | 2014-03-19 | 2014-06-04 | 江苏亚星波纹管有限公司 | Compound straight pipe bypass externally-pressing type pressure balance expansion joint |
| CN203979744U (en) * | 2014-06-25 | 2014-12-03 | 苏荣华 | Rubber sealing bypass pressure balancing sleeve compensator |
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| CN104061398A (en) | 2014-09-24 |
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