CN102964069B - The coupling device of Glass tubing and metal tube - Google Patents

The coupling device of Glass tubing and metal tube Download PDF

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Publication number
CN102964069B
CN102964069B CN201210558966.8A CN201210558966A CN102964069B CN 102964069 B CN102964069 B CN 102964069B CN 201210558966 A CN201210558966 A CN 201210558966A CN 102964069 B CN102964069 B CN 102964069B
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glass tubing
metal tube
coupling device
connector element
ring
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CN102964069A (en
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潘余
周进
王宁
王辉
刘卫东
梁剑寒
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National University of Defense Technology
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National University of Defense Technology
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Abstract

The invention provides the coupling device of a kind of Glass tubing and metal tube.According to the coupling device of Glass tubing of the present invention and metal tube, comprise connector element; First coupling end of connector element is connected with Glass tubing; Second coupling end of connector element is connected with metal tube; First coupling end is connected with the second coupling end.Glass tubing of the present invention does not directly contact with metal tube, ensure that the reliability of connection, and relative to the method for attachment of Glass tubing melting formula, technique is simple, and with low cost, success ratio is high.<pb pnum="1" />

Description

The coupling device of Glass tubing and metal tube
Technical field
The present invention relates to field tests, especially, relate to the coupling device of a kind of Glass tubing and metal tube.
Background technology
At industry and scientific research field, often need to observe high-temperature, high pressure fluid, to reach the object of monitoring or research its internal flow.Quartz glass tube have good light permeability can while there is again very high structural strength and resistance to elevated temperatures, its tensile strength at normal temperatures reaches 48.1MPa, and ultimate compression strength reaches 785 ~ 1150MPa, becomes the conventional observation device of high-temperature, high pressure fluid.But when embody rule, the difficult problem that needs solve is the connectivity problem of quartz glass tube and metal tube.Common mechanical seal cannot be applied to this connectivity problem.Major cause is that the mean thermal expansion coefficients of silica glass is 5.4 × 10-7/K, stainlessly be about 1.5 × 10-5/K, both differences about 28 times, in high temperature environments, because expansion rate is different, very easily cause metal compressing Glass tubing on contact surface and cause Glass tubing cracked.Industrial another method taked connects into an entirety with metal tube by after Glass tubing melting, the method cannot avoid the problem causing Glass breadks easily under hot environment because thermal expansivity is different equally, and the method technique is more complicated, success ratio is not high.Proposition of the present invention, solves the connectivity problem of high temperature and high pressure environment lower-glass pipe and metal tube with being intended to efficient, highly reliable rate.
Summary of the invention
The object of the invention is the coupling device providing a kind of Glass tubing and metal tube, to solve Glass tubing and different due to the thermal expansivity in high temperature environments and technical problem causing junction frangible of metal tube.
For achieving the above object, the invention provides the coupling device of a kind of Glass tubing and metal tube, comprise connector element; First coupling end of connector element is connected with Glass tubing; Second coupling end of connector element is connected with metal tube; First coupling end is connected with the second coupling end.
Further, the first coupling end of connector element is provided with air ring.
Further, the coupling device of Glass tubing and metal tube comprises two connector elements be oppositely arranged; Air ring is provided with and holds the through hole of Glass tubing, Glass tubing to insert in through hole and is provided with insulated space between the outer wall of Glass tubing and air ring; The side that two connector elements deviate from mutually is provided with the Link Port communicated with metal tube, and Link Port is connected with Glass tubing.
Further, Link Port place is provided with metal tube splicing ear.
Further, the coupling device of Glass tubing and metal tube also comprises slide rail, and two connector elements are arranged on slide rail.
Further, connector element is removably connected with slide rail.
Further, the coupling device of Glass tubing and metal tube also comprises cushion plate, and cushion plate is arranged on the contact jaw of Glass tubing, the interior contact of the contact jaw of Glass tubing and connector element (10).
Further, the hole wall of through hole is provided with sealing-ring mounting groove.
Further, sealing-ring mounting groove is multiple.
Further, air ring is provided with cooling water outlet and cooling water inlet.
The present invention has following beneficial effect:
Glass tubing of the present invention does not directly contact with metal tube, ensure that the reliability of connection, and relative to the method for attachment of Glass tubing melting formula, technique is simple, and with low cost, success ratio is high.
Except object described above, feature and advantage, the present invention also has other object, feature and advantage.Below with reference to figure, the present invention is further detailed explanation.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the vertical view schematic diagram of the coupling device according to Glass tubing of the present invention and metal tube;
Fig. 2 is the A-A place cross-sectional schematic of Fig. 1; And
Fig. 3 is the schematic top plan view of the Glass tubing of band metal tube bulb interface and the coupling device of metal tube.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
See Fig. 1 and Fig. 2, according to the coupling device of a kind of Glass tubing of the present invention and metal tube, connector element 10; First coupling end of connector element 10 is connected with Glass tubing 30; Second coupling end of connector element 10 is connected with metal tube; First coupling end is connected with the second coupling end.Glass tubing of the present invention does not directly contact with metal tube, ensure that the reliability of connection, and relative to the method for attachment of Glass tubing melting formula, technique is simple, and with low cost, success ratio is high.
See Fig. 1 and Fig. 2, the first coupling end of the coupling device connector element 10 of Glass tubing and metal tube is provided with air ring 20.
See Fig. 1 and Fig. 2, according to embodiments of the invention, the coupling device of Glass tubing and metal tube comprises two connector elements be oppositely arranged 10; Air ring 20 is provided with and holds the through hole 21 of Glass tubing 30, Glass tubing 30 to insert in through hole 21 and is provided with insulated space between the outer wall of Glass tubing 30 and air ring 20; The side that two connector elements 10 deviate from mutually is provided with the Link Port 11 communicated with metal tube, and Link Port 11 is connected with Glass tubing 30.
See Fig. 3, Link Port 11 place is provided with metal tube splicing ear 40.By metal tube splicing ear 40 can be more convenient realize the connection of the coupling device of metal tube and Glass tubing and metal tube.Metal tube splicing ear 40 can be bulb nut or hydraucone, to be connected with metal tube.
The coupling device of Glass tubing and metal tube also comprises slide rail, and two connector elements 10 are arranged on slide rail.Connector element 10 is removably connected with slide rail.Connector element 10 and slide rail are bolted fixing.It is the relatively stable of guarantee two connector elements 10 that connector element 10 is fixed on guide rail, the coaxial erecting stage that slide rail is installed with Glass tubing 30 for providing connector element 10.Connector element 10 for mounting glass pipe 30, and realizes being connected with metal tube by bulb cap or hydraucone.Two connector element 10 similar, are oppositely arranged.The base of connector element 10 is equipped with threaded hole, is connected with the threaded hole on slide rail by bolt, thus fixing whole connector element 10.By changing connector element in the fixed position of slide rail, the object of installing different lengths Glass tubing 30 can also be realized.
See Fig. 2, the coupling device of Glass tubing and metal tube also comprises cushion plate 12, and cushion plate 12 is arranged on the contact jaw of Glass tubing 30, the contact jaw of Glass tubing 30 and the interior contact of connector element 10.Cause Glass tubing 30 cracked in order to avoid Glass tubing 30 and metal directly contact, in air ring 20 with the linkage section of connector element 10, there is also mounted cushion plate 12.
See Fig. 2, the hole wall of through hole 21 is provided with sealing-ring mounting groove 22.Sealing-ring mounting groove 22 can be multiple.Preferably each air ring 20 place arranges two sealing-ring mounting grooves 22, reaches the effect of firm Glass tubing 30.The linkage section inside of air ring 20 and connector element 10 is greater than the through hole 21 of Glass tubing 30 diameter for diameter, and be designed with the sealing-ring mounting groove 22 of rectangle in close outer end, namely rubber seal 25 is installed on this.To be on the safe side, devise two seals circle and carry out labyrinth seal.
See Fig. 1 and Fig. 3, air ring 20 is provided with cooling water outlet 23 and cooling water inlet 24.For communicating with water pump, to reach the effect of cooling.Air ring 20 is also in linkage section part in the outer part, and there are two circular ports its upper end, is respectively cooling water outlet 23 and cooling water inlet 24.
Principle of work of the present invention is, considers glass and the very large feature of thermal expansion metal coefficient difference, abandons the mechanical seal mode that metal directly contacts with glass, adopts the radial seal of water-cooled sealing-ring.Glass tubing 30 two ends are inserted in connector element 10 respectively, then is connected with metal tube by bulb cap or hydraucone by connector element 10.Connector element 10 inside holds the hollow cylinder diameter of Glass tubing 30 and is greater than Glass tubing 30, and end face is provided with resistant to elevated temperatures cushion plate 12, and therefore Glass tubing 30 only contacts with cushion plate 12 and sealing-ring 25, and does not produce between the connector element 10 of metal and directly contact.Like this when high temperature fluid flows through, although metal is heated and volumetric expansion is comparatively large, but still be not enough to touch Glass tubing 30 and produce extruding and cause Glass tubing 30 cracked.If high pressure fluid, cushion plate 12 can also effectively avoid instant impact to cause Glass tubing 30 to collide metal wall and broken.
Specific works process is, when high-temperature, high pressure fluid enters after connector element 10 inner hollow cylinder through bulb cap or hydraucone, it can make Glass tubing 30 be pushed to opposite side instantaneously to the pressure of Glass tubing 30 end face, but be oppositely arranged due to both sides connector element 10 and be fixed on slide rail, and connector element 10 inside of opposite side is also provided with cushion plate 12, therefore, Glass tubing 30 can't therefore surging force and cracked.When fluid is through sealing-ring 25 position, squeezing action can be produced to sealing-ring 25, sealing-ring 25 is out of shape and presses to groove opposite side, realize sealing.If first sealing-ring still cannot seal, then reveal hydrodynamicpressure in the past very low, more just can be sealed when second sealing-ring 25.Only install one sealing-ring just can realize 5MPa pressure under sealing.General sealing-ring 25 is all rubber item, and resistance to elevated temperatures is poor.The best viton of resistance to elevated temperatures also can only tolerate the high temperature of about 400 degree.Therefore the present invention devises air ring 20, water coolant is continued to flow through sealing-ring 25 region by air ring 20, is taken away by heat, by metal cools, thus make the temperature of sealing-ring 25 remain on below its Limit temperature value, therefore the present invention can be applicable to the occasion of higher temperature.
Because Glass tubing anti-bending strength is poor, slightly unbalance stress or to have moment of torsion to cause cracked, therefore take this radial seal very high to the requirement of installing to the connection realizing Glass tubing and metal tube, two connector elements 10 and Glass tubing 30 must be ensured on the same axis.For this reason, a specialized designs of the present invention slide rail, first inserts a connector element during installation, and then on slide rail, carries out the connection with another connector element by Glass tubing, fully can ensure the right alignment of connector element and Glass tubing like this, avoid Glass tubing 30 cracked.Meanwhile, this slide rail also plays effect that is fixing to connector element 10 and adjustment relative distance, thus makes the present invention can be suitable for the connection of the Glass tubing 30 of different lengths.
As can be seen from the above description, the above embodiments of the present invention achieve following technique effect:
Glass tubing of the present invention does not directly contact with metal tube, ensure that the reliability of connection, and relative to the method for attachment of Glass tubing melting formula, technique is simple, and with low cost, success ratio is high; Adopt sealing-ring radial seal, binding buffer pad, effectively prevent Glass tubing and contacts with the direct of metal tube, thus solves Glass tubing and the problem that cannot in high temperature environments be connected and sealed different due to thermal expansivity from metal tube.Adopt circulating water-cooled, sealing-ring is cooled, temperature applicable range of the present invention is widened greatly, the high temperature occasion of temperature higher than rubber tolerable temperature can be applicable to; Adopt slide rail simultaneously, for connector element and Glass tubing provide coaxial erecting stage, effectively ensure that the success ratio of installation, prevent Glass tubing cracked because of moment of torsion.The present invention is relative to the method for attachment of Glass tubing melting formula, and technique is simple, and with low cost, success ratio is high.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. a coupling device for Glass tubing and metal tube, is characterized in that, comprising:
Two connector elements (10);
First coupling end of each described connector element (10) is connected with Glass tubing (30);
Second coupling end of each described connector element (10) is connected with metal tube;
Described first coupling end is connected with described second coupling end;
Slide rail, two described connector elements (10) are arranged on described slide rail.
2. the coupling device of Glass tubing according to claim 1 and metal tube, is characterized in that,
First coupling end of described connector element (10) is provided with air ring (20).
3. the coupling device of Glass tubing according to claim 2 and metal tube, is characterized in that,
Comprise two described connector elements (10) be oppositely arranged;
Described air ring (20) is provided with the through hole (21) holding Glass tubing (30), described Glass tubing (30) to insert in described through hole (21) and is provided with insulated space between the outer wall of described Glass tubing (30) and described air ring (20);
The side that two described connector elements (10) are deviated from mutually is provided with the Link Port (11) communicated with metal tube, and described Link Port (11) is connected with described Glass tubing (30).
4. the coupling device of Glass tubing according to claim 1 and metal tube, is characterized in that, described Link Port (11) place is provided with metal tube splicing ear (40).
5. the coupling device of Glass tubing according to claim 1 and metal tube, it is characterized in that, the diameter of the hollow cylinder of described connector element (10) the inside described Glass tubing of accommodation (30) is greater than the diameter of described Glass tubing (30), the end face of this hollow cylinder is provided with resistant to elevated temperatures cushion plate (12), described Glass tubing (30) only contacts with described cushion plate (12) and the sealing-ring (25) be set on described Glass tubing (30) periphery, and does not produce between the described connector element (10) of metal and directly contact.
6. the coupling device of Glass tubing according to claim 1 and metal tube, is characterized in that, described connector element (10) is removably connected with described slide rail.
7. the coupling device of Glass tubing according to claim 1 and metal tube, it is characterized in that, also comprise cushion plate (12), described cushion plate (12) is arranged on the contact jaw of described Glass tubing (30), the contact jaw of described Glass tubing (30) and the interior contact of described connector element (10).
8. the coupling device of Glass tubing according to claim 3 and metal tube, is characterized in that, the hole wall of described through hole (21) is provided with sealing-ring mounting groove (22).
9. the coupling device of Glass tubing according to claim 8 and metal tube, is characterized in that, described sealing-ring mounting groove (22) is for multiple.
10. the coupling device of Glass tubing according to claim 2 and metal tube, is characterized in that, described air ring (20) is provided with cooling water outlet (23) and cooling water inlet (24).
CN201210558966.8A 2012-12-20 2012-12-20 The coupling device of Glass tubing and metal tube Active CN102964069B (en)

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CN102964069B true CN102964069B (en) 2015-10-28

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106567971A (en) * 2016-11-04 2017-04-19 重庆兴宝兴玻璃制品有限公司 High-temperature fluid observation device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101178258A (en) * 2007-12-10 2008-05-14 南京工业大学 Glass metal sealing device of medium-temperature solar heat pipe receiver
CN201568670U (en) * 2009-11-03 2010-09-01 常熟市格威普气体设备有限公司 Sealed insulating tube joint
CN202274230U (en) * 2011-09-21 2012-06-13 东莞市中镓半导体科技有限公司 Connection structure for quartz tube and metal body

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101178258A (en) * 2007-12-10 2008-05-14 南京工业大学 Glass metal sealing device of medium-temperature solar heat pipe receiver
CN201568670U (en) * 2009-11-03 2010-09-01 常熟市格威普气体设备有限公司 Sealed insulating tube joint
CN202274230U (en) * 2011-09-21 2012-06-13 东莞市中镓半导体科技有限公司 Connection structure for quartz tube and metal body

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