CN201209733Y - Double-skin duct connecting device - Google Patents
Double-skin duct connecting device Download PDFInfo
- Publication number
- CN201209733Y CN201209733Y CNU2008201201031U CN200820120103U CN201209733Y CN 201209733 Y CN201209733 Y CN 201209733Y CN U2008201201031 U CNU2008201201031 U CN U2008201201031U CN 200820120103 U CN200820120103 U CN 200820120103U CN 201209733 Y CN201209733 Y CN 201209733Y
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- pipe
- flange
- double
- flange plate
- outer tube
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Abstract
The utility model relates to a pipe connection device, in particular to a double-wall pipe connection device applied on a coaxial heat exchanger. The double-wall pipe connection device comprises an inner pipe and an outer pipe enclosed outside the inner pipe. Both the inner pipe and the outer pipe are made of different nonweldable materials. The joint of the inner pipe and the outer pipe is provided with a flange which comprises an inner flange welded with the inner pipe, and an outer flange welded with the outer pipe. The inner flange and the outer flange are completely the same in shape and size. A seal gasket is arranged between the two flanges. The inner pipe penetrates through the inner flange and the outer flange. The utility model primarily provides the double-wall pipe connection device, which can connect pipes of different materials conveniently and is capable of resisting pressure and corrosion. The double-wall pipe connection device solves the problem that double-wall pipes of different materials can not be connected through weld, and the pressure resistance and the corrosion resistance are poor in the prior art.
Description
Technical field
The utility model relates to a kind of assembling pipe joint, relates in particular to a kind of double-skin duct connection set that is applied on the coaxial heat exchanger.
Background technique
It is a kind of more common and general technology in the modern industrial technology that pipeline connects.General pipeline is connected with directly and welds together, and perhaps links together by transition piece.Flange also is a kind of very general application as the middleware that pipeline connects.It is exactly two pipelines, pipe fitting or equipment that flange connects, and is fixed on separately on the flange plate earlier, adds flange gasket between two flange plate, links together with bolton, finishes connection.The pipeline of flange connection at present mostly is the connection between the individual layer pipeline, and the individual layer pipeline is welded on the flange plate, then flange plate is connected and fixed.Patent document as China: " a kind of assembling pipe joint (CN2463654) ", utilize flange that pipeline is connected, utilize seal ring with flange and body sealing.But for the different fluid that flows between interlayer in the Double layer pipeline and the interior pipe, and outer tube and the interior pipe connectivity problem can't weld the time, solution do not mentioned, because this need consider extent of corrosion, the voltage endurance capability of different fluid to diaphragm seal.The pipeline of present coaxial heat exchanger wish to adopt the titanium material as heat exchanger tube, but the titanium material can only weld with same material in order to improve corrosion resistance and the heat-transfer coefficient to acid, alkali, salt, if integral body all adopts the titanium pipe, then cost is too high.
Summary of the invention
The utility model has mainly provided a kind of for can conveniently connecting between the pipeline of unlike material, and the strong double-skin duct connection set of withstand voltage corrosion resistance; Be difficult to be welded to connect the technical problem of withstand voltage corrosion resistance difference between the double-skin duct of solution existing in prior technology unlike material.
The utility model also provides simultaneously a kind of the corrosion resistance height and heat-transfer coefficient to acid, alkali, salt of pipeline of coaxial heat exchanger good, good sealing effect, and load performance is good, double-skin duct connection set easy to connect, that cost is low; Solved corrosion-resistant and the heat-transfer coefficient low technical problem of the pipeline of the coaxial heat exchanger that exists in the prior art to acid, alkali, salt.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of double-skin duct connection set, the outer outer tube of pipe in managing in comprising and being socketed in, pipe and outer tube are nonweldable unlike material in described, pipe and outer tube connecting part are provided with flange in described, described flange comprises the inner flange with interior pipe welding, with with the outward flange dish of outer tube welding, the shape of described inner flange and outward flange dish and size are in full accord, be provided with sealing gasket between two flange plate, described interior pipe runs through inside and outside flange plate.Two kinds of pipelines for unlike material can't directly be welded to connect, the different fluid that flowing between interior conduit and interlayer, thus realize heat exchange.By the connection of flange plate, simple in structure, and change easy for installation.In order to realize the welding between same material, with the pipeline flange connecting adopt can with the similar or same material of pipeline welding, thereby can realize rapid welding, and can connect by bolt between the flange that cannot be welded to each other, be easy to realize.The butt joint of two flange plate by different materials has solved the problem that can't weld between two kinds of pipelines of two kinds of materials that cannot be welded to each other.Interior pipe has run through inside and outside flange plate, and outer tube sleeve connects on inner pipe, is connected with interior pipe by being welded on the outward flange dish.
As preferably, described in pipe and outer coaxial tube setting, described in the external diameter of pipe less than the diameter of bore of described flange plate, the internal diameter of described outer tube is greater than the diameter of bore of described flange plate.Make things convenient for the welding of inner and outer pipes, can increase the fluid circulation space between interlayer simultaneously, outer tube diameter is slightly larger than the central through bore of outward flange, and outer tube and outward flange are in the direct argon arc welding welding of plane side; Interior external diameter of pipe is more smaller than inner flange center hole, from inner flange male and fomale(M﹠F) side directly pierce into the central through bore and stretch out certain-length after directly argon arc welding welding.
Interior pipe and inner flange are Ti metal, outer tube and outward flange dish are non-Ti metal, outer tube is non-Ti metal pipe, the outward flange dish is for making with the metallic material of outer tube material welding, as preferably, described interior pipe and inner flange are made for the titanium material metal, and described outer tube and outward flange dish are made for the steel metallic material, and inside and outside flange plate is bolted to connection.Titanium material good corrosion resistance, the heat-transfer coefficient height is in light weight simultaneously, very be adapted in the heat exchanger practical, but the titanium pipe can only weld with the titanium of same material, therefore selects for use the titanium flange plate as inner flange, and the direct bolt of inside and outside flange plate just can be fixedly connected.The inner and outer pipes different materials can be saved cost.
As preferably, described pipeline and flange plate face of weld are the plane, and inside and outside flange plate abutted surface is provided with annular groove, and the two sides of described sealing gasket is provided with the projection that matches with annular groove.Groove and projection cooperate the radial seal that has realized connection set, prevented the radial leakage of fluid.
As preferably, the endoporus place of described inside and outside flange plate is provided with chamfering, and the center of described sealing gasket is provided with the boss of annular.The boss of sealing gasket cooperates with chamfering, makes axial the compressing of sealing gasket to have realized the axial seal of connection set, has prevented the axial leakage of fluid.
Sealing gasket can adopt macromolecular material to make, and as more preferably, described sealing gasket is that polytetrafluoroethylmaterial material is made.Polytetrafluoroethylene sealing gasket has solved the corrosion to conventional pads of cold coal or fluid, and the cold coal steam of High Temperature High Pressure in the refrigeration industry is had good load performance (maximum 22MPa), effectively prevents axially and leakage radially.
Therefore, a kind of double-skin duct connection set of the present utility model has following advantage: 1. the material difference of inside and outside two flange plate, finished the double-skin duct that can't directly be welded to connect two kinds of different materials in the coaxial heat-exchanger and connected, and simple in structure; 2. adopt the pipeline of titanium pipe, improved decay resistance, heat exchange coefficient height, long service life as coaxial heat-exchanger; 3. cooperating of sealing gasket and flange plate, realized axially and sealing radially, good sealing effect, the sealing gasket of polytetrafluoroethylmaterial material has good load performance.
Description of drawings:
Fig. 1 is the structural representation of a kind of double-skin duct of the present utility model.
Fig. 2 is the cross-sectional schematic of a kind of double-skin duct of the present utility model.
Fig. 3 is the schematic perspective view of the flange plate in Fig. 1.
Fig. 4 is the side view of Fig. 3.
Fig. 5 is the schematic representation of the sealing gasket in Fig. 1.
Fig. 6 is the stereogram of the sealing gasket in Fig. 1.
The concrete example of implementing:
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment:
Shown in attached Fig. 1 and 2, a kind of double-skin duct connection set comprises coaxial interior pipe 1 and outer tube 2, and interior pipe 1 is the titanium tubes of material, and outer tube 2 is steel pipes, an end of pipe 1 in outer tube 2 is socketed in.Be provided with flange at interior pipe 1 and outer tube 2 connecting parts, with pipe 1 in the titanium material mutually welding be the inner flange 3 of titanium material, with outer tube 2 welding of steel be the outward flange dish 4 of irony, inner flange 3 and outward flange dish 4 sizes are in full accord, material difference only is to guarantee sealing effect.Inner flange 3 and interior pipe 1 face of weld are the plane, and the face of weld of outward flange dish 4 and outer tube 2 also is the plane.The internal diameter of outer tube 2 (steel pipe) is slightly larger than outward flange dish 4 (iron flange) central through bore, and steel pipe and iron flange are in the direct argon arc welding welding of plane side; In pipe 1 (titanium pipe) external diameter more smaller than inner flange (titanium flange) central through bore, from titanium flange male and fomale(M﹠F) side directly wear the nearly central through bore and stretch out certain-length after directly argon arc welding welding, interior pipe 1 runs through inside and outside flange plate 3,4; The outer rim of inner flange 3 and outward flange dish 4 is equipped with bolt hole 6, and inside and outside flange plate 3,4 is bolted to connection.Between inner flange 3 and outward flange dish 4, be provided with sealing gasket 5, inside and outside flange plate 3,4 and sealing gasket 5 contacted one sides are provided with boss 7, boss 7 is provided with annular groove 8 and chamfering 9, be provided with the projection 11 that matches with annular groove 8 on the flange plate on the sealing gasket 5, thereby can finishing radial seal.The endoporus place of inside and outside flange plate 3,4 all carries out chamfering 9 and handles, and is provided with the boss 10 identical with the chamfering gradient in the central position of sealing gasket 5, thereby can finishes axial seal (as accompanying drawing 3 and 4 and 5 and 6).The different fluid that flowing in the interlayer of interior pipe 1 and interior pipe 1 and outer tube 2 is realized the heat exchange of cold fluid and hot fluid by the wall of interior pipe 1.The corrosion resistance of titanium pipe and thermal conductivity have increased the working life of coaxial heat exchanger all than higher.Sealing gasket 5 adopts polytetrafluoroethylmaterial material, and resistance to pressure and corrosion resistance are than higher.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (6)
1. double-skin duct connection set, the outer outer tube of pipe in managing in comprising and being socketed in, it is characterized in that: pipe and outer tube are nonweldable unlike material in described, pipe and outer tube connecting part are provided with flange in described, described flange comprises and the inner flange of interior pipe welding and the outward flange dish that welds with outer tube that the shape of described inner flange and outward flange dish and size are in full accord, be provided with sealing gasket between two flange plate, described interior pipe runs through inside and outside flange plate.
2. a kind of double-skin duct connection set according to claim 1, it is characterized in that: pipe and outer coaxial tube setting in described, the external diameter of pipe is less than the diameter of bore of described flange plate in described, and the internal diameter of described outer tube is greater than the diameter of bore of described flange plate.
3. a kind of double-skin duct connection set according to claim 1 and 2, it is characterized in that: described interior pipe and inner flange are made for the titanium material metal, described outer tube and outward flange dish are made for the steel metallic material, and inside and outside flange plate is bolted to connection.
4. a kind of double-skin duct connection set according to claim 1 and 2, it is characterized in that: described pipeline and flange plate face of weld are the plane, inside and outside flange plate abutted surface is provided with annular groove, and the two sides of described sealing gasket is provided with the projection that matches with annular groove.
5. a kind of double-skin duct connection set according to claim 1 and 2 is characterized in that: the endoporus place of described inside and outside flange plate is provided with chamfering, and the center of described sealing gasket is provided with the boss of annular.
6. a kind of double-skin duct connection set according to claim 1 and 2 is characterized in that: described sealing gasket is that polytetrafluoroethylmaterial material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201201031U CN201209733Y (en) | 2008-06-19 | 2008-06-19 | Double-skin duct connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201201031U CN201209733Y (en) | 2008-06-19 | 2008-06-19 | Double-skin duct connecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201209733Y true CN201209733Y (en) | 2009-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201201031U Expired - Lifetime CN201209733Y (en) | 2008-06-19 | 2008-06-19 | Double-skin duct connecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201209733Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564651A (en) * | 2011-12-27 | 2012-07-11 | 中联重科股份有限公司 | Concrete pump car, measuring apparatus for conveyer pipe of concrete pump car and induction device mounting base of concrete pump car |
| CN101514611B (en) * | 2009-03-23 | 2012-08-29 | 佛山市南海高拓包装材料有限公司 | Two-way rotating fluid guiding device |
| CN104121421A (en) * | 2014-07-15 | 2014-10-29 | 中船黄埔文冲船舶有限公司 | Construction technology for double-layer pipelines of LNG powered ship gas supply system |
| CN104471155A (en) * | 2012-07-17 | 2015-03-25 | 比恩斯塔创新有限公司 | Embeddable assembly for a hydraulic connection |
| CN105067139A (en) * | 2015-07-29 | 2015-11-18 | 广西华银铝业有限公司 | Thermal resistor protective structure |
| CN109578713A (en) * | 2019-01-25 | 2019-04-05 | 广州市科绿士环保设备有限公司 | A kind of double-deck tube seal structure of heat exchange and its installs fixture, installation method |
| CN110312859A (en) * | 2017-01-23 | 2019-10-08 | 艾尼科燃料技术有限公司 | The processing unit of dangerous substance |
| CN115076479A (en) * | 2022-06-15 | 2022-09-20 | 中国科学院上海应用物理研究所 | Flange self-sealing device for high-temperature molten salt environment |
-
2008
- 2008-06-19 CN CNU2008201201031U patent/CN201209733Y/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101514611B (en) * | 2009-03-23 | 2012-08-29 | 佛山市南海高拓包装材料有限公司 | Two-way rotating fluid guiding device |
| CN102564651A (en) * | 2011-12-27 | 2012-07-11 | 中联重科股份有限公司 | Concrete pump car, measuring apparatus for conveyer pipe of concrete pump car and induction device mounting base of concrete pump car |
| CN102564651B (en) * | 2011-12-27 | 2014-03-12 | 中联重科股份有限公司 | Concrete pump car, measuring apparatus for conveyer pipe of concrete pump car and induction device mounting base of concrete pump car |
| CN104471155A (en) * | 2012-07-17 | 2015-03-25 | 比恩斯塔创新有限公司 | Embeddable assembly for a hydraulic connection |
| CN104121421A (en) * | 2014-07-15 | 2014-10-29 | 中船黄埔文冲船舶有限公司 | Construction technology for double-layer pipelines of LNG powered ship gas supply system |
| CN105067139A (en) * | 2015-07-29 | 2015-11-18 | 广西华银铝业有限公司 | Thermal resistor protective structure |
| CN110312859A (en) * | 2017-01-23 | 2019-10-08 | 艾尼科燃料技术有限公司 | The processing unit of dangerous substance |
| CN110312859B (en) * | 2017-01-23 | 2021-09-17 | 艾尼科燃料技术有限公司 | Hazardous substance treatment unit |
| CN109578713A (en) * | 2019-01-25 | 2019-04-05 | 广州市科绿士环保设备有限公司 | A kind of double-deck tube seal structure of heat exchange and its installs fixture, installation method |
| CN115076479A (en) * | 2022-06-15 | 2022-09-20 | 中国科学院上海应用物理研究所 | Flange self-sealing device for high-temperature molten salt environment |
| CN115076479B (en) * | 2022-06-15 | 2023-09-19 | 中国科学院上海应用物理研究所 | Flange self-sealing device for high-temperature molten salt environment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: HAYE(Shanghai) Refrigeration Machinery Co.,Ltd. Assignor: Hangzhou Shenshi Heat Exchanger Co., Ltd. Contract fulfillment period: 2008.2.1 to 2013.2.1 Contract record no.: 2009310000092 Denomination of utility model: Double-skin duct connecting device Granted publication date: 20090318 License type: Exclusive license Record date: 20090615 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.2.1 TO 2013.2.1; CHANGE OF CONTRACT Name of requester: SHANGHAI HONYER REFRIGERATING MACHINERY CO., LTD. Effective date: 20090615 |
|
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: HAYE(Shanghai) Refrigeration Machinery Co.,Ltd. Assignor: Hangzhou Shenshi Heat Exchanger Co., Ltd. Contract record no.: 2009310000092 Date of cancellation: 20110921 |
|
| C56 | Change in the name or address of the patentee |
Owner name: HANGZHOU SHENSHI ENERGY SAVING TECHNOLOGY CO., LTD Free format text: FORMER NAME: HANGZHOU SHENSHI HEAT EXCHANGER CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: Jiande hangtou Town Industrial Zone, Hangzhou city 311612 large mouth block in Zhejiang Province Patentee after: HANGZHOU SHENSHI ENERGY CONSERVATION TECHNOLOGY CO., LTD. Address before: Jiande City, Zhejiang province 311612 large hangtou Town Industrial Park Patentee before: Hangzhou Shenshi Heat Exchanger Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20090318 |
|
| CX01 | Expiry of patent term |