CN202927314U - Flange connector - Google Patents
Flange connector Download PDFInfo
- Publication number
- CN202927314U CN202927314U CN 201220667399 CN201220667399U CN202927314U CN 202927314 U CN202927314 U CN 202927314U CN 201220667399 CN201220667399 CN 201220667399 CN 201220667399 U CN201220667399 U CN 201220667399U CN 202927314 U CN202927314 U CN 202927314U
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- Prior art keywords
- hole
- seal ring
- pipe
- spacing hole
- pilot hole
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- Expired - Fee Related
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Abstract
The utility model provides a flange connector which comprises a pair of flange bodies, a pair of connector bodies, a seal ring and at least two fasteners; the two connector bodies are tubular and provided with stepped holes; butted end surfaces are junction surfaces, and the ends of the outer walls which are close to the junction surfaces are provided with bosses; the stepped holes of one connector body are a guide hole, a first limit hole, a second limit hole and a brake pipe installation positioning hole in sequence; the guide hole is in a trumpet shape and the flaring is arranged on the end of the junction surface; the inner diameters of the necking of the guide hole, the first limit hole and the second limit hole are reduced in sequence; the inner diameter of the installation positioning hole is more than that of the second limit hole; the junction surface of the other connector body is externally provided with an overhanging pipe; the outer diameter of the overhanging pipe is matched with the inner diameter of the first limit hole; and the seal ring is arranged between the guide hole and the overhanging pipe. After the flange connector is installed, two sealed parts between the inner wall of the guide hole and the seal ring and between the outer wall of the overhanging pipe of the connector body and the seal ring are produced, an installation guiding function and a non-junction end surface sealing function are realized, and an excellent sealing effect is achieved.
Description
Technical field
The utility model relates to sealing technique, relates in particular to a kind of flanged joint, belongs to the rail wagon brake line technical field of sealing technology.
Background technique
The connection sealing means of the braking pipe arrangement original adoption pipe thread of China railways lorry has occurred easily sewing in utilization, the problem such as Brake pipe frangibility.The eighties, use for reference the Railway Freight Cars in U.S.A. flanged joint and use successful experience, China begins to have replaced the pipe thread Placement with the flange joint connection manner, has reduced sewing, facilitated manufacturing and overhauling of train braking system, but because the material of flanged joint is cast iron, perishable in utilization.Along with the development of railway freight-car technology, calendar year 2001, the stainless steel flanged joint begins to promote the use of on railway freight-car, has reduced the corrosion of flanged joint, has extended working life and the repair cycle of flanged joint.But since calendar year 2001 began entrucking and uses, the steel flange joint had also reflected some problems, as rubber seal poor performance under low temperature environment, easily produce the problem such as sew.
at present, railway wagon brake pipe system generally adopts flanged joint to connect sealing, as shown in Figure 1, flanged joint is an assembly parts, by a pair of flange body 1, the first fittings body 2, the second fittings body 3, two bolt assemblies and the parts such as seal ring 4 that are placed between the first fittings body 2 and the second fittings body 3 form, its structure as shown in Figure 1, wherein the first fittings body 2 and the second fittings body 3 are by junction plane 10 fitted seal under the pressuring action of bolt assembly and flange of end, two fittings bodies all are tubular and have shoulder hole, and all has boss on its junction plane end outer wall, wherein the boss on inwall 20 is used for axially limiting the Brake pipe 5 that wears in the inner, boss 21 on the first fittings body 2 outer walls has groove, seal ring 4 is placed in this groove, its sealing principle is: flanged joint is under the effect of bolt pretightening, the seal ring 4 that will be between junction plane compresses, applied pressure makes seal ring 4 compressive strains produce enough decrements after reaching certain bolt torque value, the microgap that is formed by machining on junction plane is filled, stop the pressure air that seals to be sewed, produce seal action, the Environmental Conditions temperature is-50～+ 70 ℃, belong to static seal, its specification is divided into according to the large I of pipeline internal diameter: DN32, DN25, DN20, DN15, five kinds of DN10, but there is following shortcoming in existing flanged joint:
(1) shrink flexibility decrease after hardening under relatively poor, the low temperature environment of the easy aging distortion of seal ring, the oil resistance made of rubber material, when causing sealing, decrement reduces to cause leakage problem; Rubber seal is short working life, and palpus was changed in 2 years;
(2) fittings body is installed junction plane place's sealing, and the shaftless guide-localization function in sealing position is subject to correlated parts manufacturing, installation deviation impact, causes airtight quality not good, and generation is sewed.
The model utility content
The utility model provides a kind of flanged joint, is used for overcoming defective of the prior art, easily installs, and not being subjected to associated components to make installation deviation affects, and strengthens sealing effect.
this flanged joint that the utility model provides is by a pair of flange body, one is opposite to the fittings body in this flange body endoporus, a seal ring forms for the fastening piece that connects described flange be connected two, two fittings bodies all are tubular and all have shoulder hole, the end face of two fittings body docking is junction plane, and the two nearly junction plane ends of described fittings body outer wall all have the boss that coordinates with the flange endoporus, the shoulder hole of one of them fittings body is followed successively by pilot hole from its junction plane end, the first spacing hole, the second spacing hole and mounting-positioning holes, described pilot hole is horn-like and enlarging is positioned at the junction plane end, described pilot hole reducing, the first spacing hole and the second spacing hole internal diameter reduce successively, described mounting-positioning holes internal diameter is greater than the second spacing hole internal diameter, another described fittings body junction plane end outwards has the pipe that overhangs, and this pipe external diameter that overhangs coordinates with described the first spacing hole internal diameter, described seal ring is placed in described pilot hole and this overhangs between the pipe outer wall.
Wherein, described seal ring is circular, and described pilot hole is round table-like.
Particularly, described seal ring external diameter is less than the large footpath of described pilot hole.
Wherein, the described bore that overhangs is consistent with described the second spacing hole internal diameter.
Further, the length of the described pipe that overhangs is less than the pilot hole degree of depth and the first spacing hole degree of depth sum.
The flanged joint that the utility model provides, two fittings bodies begin group to the time pilot hole and seal ring one end in contact after, the circumferentially continuous compressed closing in of seal ring contact jaw, until after outer wall contact with the pipe that overhangs, seal ring section direction began compressed, wait assemble complete after, seal ring reaches design pressure amount, produce pilot hole inwall and seal ring, overhang and manage outer wall and sealing position, seal ring two places, the installation guide function that has and non-binding end face seal reach good sealing effect.
Description of drawings
Fig. 1 is the structural representation of prior art;
Fig. 2 is the left view of Fig. 1;
The structure sectional view of the flanged joint that Fig. 3 provides for the utility model embodiment;
Fig. 4 is the partial enlarged drawing of P in Fig. 3;
Fig. 5 is the sectional view of the first fittings body in Fig. 3;
Fig. 6 is the sectional view of the second fittings body in Fig. 3;
Fig. 7 is that the installation process of flanged joint is with reference to figure one;
Fig. 8 is that the installation process of flanged joint is with reference to figure two;
Fig. 9 is that the installation process of flanged joint is with reference to figure three.
Embodiment
as shown in Fig. 3-6, the utility model embodiment provides a kind of flanged joint by a pair of flange body 1, one is opposite to the fittings body in this flange body 1 endoporus, seal ring 4 and at least two fastening pieces that are used for adpting flange body 1 form, two fittings bodies all are tubular and all have shoulder hole, the end face of two fittings body docking is junction plane 10, and the two nearly junction plane ends of fittings body outer wall all have the boss 21 that coordinates with flange body 1 endoporus, above-mentioned fittings body is specially the first fittings body 2 and the second fittings body 3, the shoulder hole of the first fittings body 2 is followed successively by pilot hole 30 from its junction plane 10 ends, the first spacing hole 40, the second spacing hole 50 and mounting-positioning holes 60, pilot hole 30 is horn-like and enlarging is positioned at junction plane 10 ends, the pilot hole reducing, the first spacing hole 40 and the second spacing hole 50 internal diameters reduce successively, mounting-positioning holes 60 internal diameters are greater than the second spacing hole 50 internal diameters, the second fittings body 3 seal faces outwards have one overhang the pipe 6, this overhang the pipe 6 external diameters coordinate with the first spacing hole 40 internal diameters, seal ring 4 is placed in pilot hole 30 and this overhangs between pipe 6 outer walls.
the flanged joint that the utility model provides, the shoulder hole of the shoulder hole of the first fittings body 2 and the second fittings body 3 all comprises mounting-positioning holes 60 and the second spacing hole 50, mounting-positioning holes 60 is used for installing Brake pipe shown in Figure 15, the second spacing hole 50 is used for axially limiting the position of Brake pipe 5, the first spacing hole 40 is used for limiting the axial position of seal ring, installation process is referring to Fig. 7-9, the first fittings body 2 and the second fittings body 3 begin the group to the time, as shown in Figure 7, at first seal ring 4 is enclosed within on the pipe 6 that overhangs, pilot hole 30 is relative with seal ring 4, and relatively close under the External Force Acting of the direction of arrow in as Fig. 7, as shown in Figure 8, after pilot hole 30 inwalls and seal ring 4 one end in contact, the circumferentially continuous compressed closing in of seal ring 4 contact jaws, as shown in Figure 9, until after outer wall contact with the pipe that overhangs, seal ring 4 section directions began compressed, the pipe that overhangs penetrates in the first spacing hole 40, and two fittings body junction planes are fitted namely to assemble and completed, seal ring reaches design pressure amount, and generation pilot hole inwall and seal ring, fittings body overhang and manage outer wall and sealing position, seal ring two places, and the installation guide function that has and non-binding end face seal reach good sealing effect.
As the preferred implementation of above-described embodiment, it is circular that seal ring is, and it is round table-like that pilot hole is.Seal ring is made by teflon class material.Flanged joint adopts teflon class material seal circle, and the Environmental Conditions temperature can reach-60～+ 70 ℃, can solve railway wagon brake pipe flanged joint low temperature leakage problem, and can extend flanged joint working life and repair cycle.Teflon class material has in the wider temperature range of-196～260 ℃: do not become fragile under cryogenic conditions; Anti-atmospheric aging, radiation-resistant property are superior; Have lower permeability, long term exposure is in atmosphere, and surface and physical and mechanical properties remain unchanged.Flanged joint adopts that teflon class material makes has enough toughness and elastic seal ring, can solve easily aging, the problem such as oil resistance is poor, resistance to low temperature is poor, working life is short of rubber seal.Seal ring is designed to the cirque structure that the cross section is rectangle.
For the ease of installing, seal ring 4 external diameters are slightly less than pilot hole 30 large footpath, and concrete seal ring 4 external diameters have both facilitated installation than the large little 0.5mm in footpath of pilot hole 30, can play seal action again.Pipe 6 internal diameters that overhang are consistent with the second spacing hole 50 internal diameters, this pipe 6 that overhangs can directly carry out the boss of the second fittings body outer wall turning and obtain, overhang pipe 6 internal diameters greater than the second spacing hole 50 internal diameters, just increased processing cost, also an end pipe directly can be welded on the raised head face of the second fittings body, overhang pipe 6 internal diameters less than the second spacing hole 50 internal diameters, just define the medium circulation area of fittings body inside.Overhang pipe 6 length d less than the d1 of pilot hole 30 degree of depth and the d2 sum of first spacing hole 40 degree of depth.Be d＜d1+d2.Be in confined state with the end face that guarantees seal ring, thereby strengthen sealing effect.
It should be noted that at last: above each embodiment is not intended to limit only in order to the technical solution of the utility model to be described; Although with reference to aforementioned each embodiment, the utility model is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be modified to the technological scheme that aforementioned each embodiment puts down in writing, and perhaps some or all of technical characteristics wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the scope of each embodiment's technological scheme of the utility model.
Claims (5)
1. flanged joint, this flanged joint is by a pair of flange body, one is opposite to the fittings body in this flange body endoporus, a seal ring forms for the fastening piece that connects described flange body be connected two, two fittings bodies all are tubular and all have shoulder hole, the end face of two fittings body docking is junction plane, and the two nearly junction plane ends of described fittings body outer wall all have the boss that coordinates with the flange body endoporus, it is characterized in that, the shoulder hole of one of them fittings body is followed successively by pilot hole from its junction plane end, the first spacing hole, the second spacing hole and mounting-positioning holes, described pilot hole is horn-like and enlarging is positioned at the junction plane end, described pilot hole reducing, the first spacing hole and the second spacing hole internal diameter reduce successively, described mounting-positioning holes internal diameter is greater than the second spacing hole internal diameter, another described fittings body junction plane end outwards has the pipe that overhangs, and this pipe external diameter that overhangs coordinates with described the first spacing hole internal diameter, described seal ring is placed in described pilot hole and this overhangs between the pipe outer wall.
2. flanged joint according to claim 1, is characterized in that, described seal ring is circular, and described pilot hole is round table-like.
3. flanged joint according to claim 2, is characterized in that, described seal ring external diameter is less than the large footpath of described pilot hole.
4. flanged joint according to claim 1 and 2, is characterized in that, the described bore that overhangs is consistent with described the second spacing hole internal diameter.
5. according to claim 1,2 or 3 described flanged joints, is characterized in that, the length of the described pipe that overhangs is less than the pilot hole degree of depth and the first spacing hole degree of depth sum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220667399 CN202927314U (en) | 2012-12-06 | 2012-12-06 | Flange connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220667399 CN202927314U (en) | 2012-12-06 | 2012-12-06 | Flange connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202927314U true CN202927314U (en) | 2013-05-08 |
Family
ID=48217274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220667399 Expired - Fee Related CN202927314U (en) | 2012-12-06 | 2012-12-06 | Flange connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202927314U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277602A (en) * | 2013-06-27 | 2013-09-04 | 贵州航天精工制造有限公司 | Vacuum tube joint threaded connection component |
| CN107940137A (en) * | 2017-11-22 | 2018-04-20 | 浙江邝记汽车零部件有限公司 | A kind of ring flange easy to install |
| CN108612714A (en) * | 2018-07-07 | 2018-10-02 | 郑州海特机械有限公司 | Aerobic fermentation machine and its Modularized shell connection structure |
| CN108869909A (en) * | 2018-06-08 | 2018-11-23 | 南通合强液压科技有限公司 | One kind can axial movable high pressure joint flange structure and attaching method thereof |
| CN110906078A (en) * | 2019-11-23 | 2020-03-24 | 安徽欣景隆轨道车辆装备有限公司 | Flange joint |
-
2012
- 2012-12-06 CN CN 201220667399 patent/CN202927314U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277602A (en) * | 2013-06-27 | 2013-09-04 | 贵州航天精工制造有限公司 | Vacuum tube joint threaded connection component |
| CN107940137A (en) * | 2017-11-22 | 2018-04-20 | 浙江邝记汽车零部件有限公司 | A kind of ring flange easy to install |
| CN108869909A (en) * | 2018-06-08 | 2018-11-23 | 南通合强液压科技有限公司 | One kind can axial movable high pressure joint flange structure and attaching method thereof |
| CN108612714A (en) * | 2018-07-07 | 2018-10-02 | 郑州海特机械有限公司 | Aerobic fermentation machine and its Modularized shell connection structure |
| CN110906078A (en) * | 2019-11-23 | 2020-03-24 | 安徽欣景隆轨道车辆装备有限公司 | Flange joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 161002 Qigihar City, Heilongjiang province Tiefeng District Plant Road No. 36 Patentee after: CRRC QIQIHAR VEHICLE CO., LTD. Address before: 161002 Qigihar City, Heilongjiang province Tiefeng District Plant Road No. 36 Patentee before: Qiqihar Railway Rolling Stock Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20181206 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |