CN203836427U - Pipeline sealing and connecting device - Google Patents
Pipeline sealing and connecting device Download PDFInfo
- Publication number
- CN203836427U CN203836427U CN201420238732.XU CN201420238732U CN203836427U CN 203836427 U CN203836427 U CN 203836427U CN 201420238732 U CN201420238732 U CN 201420238732U CN 203836427 U CN203836427 U CN 203836427U
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- Prior art keywords
- seal ring
- pipeline
- sleeve
- groove
- seal groove
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- 238000007789 sealing Methods 0.000 title abstract description 20
- 230000001154 acute effect Effects 0.000 claims description 18
- 238000009434 installation Methods 0.000 abstract description 6
- 230000006835 compression Effects 0.000 description 20
- 238000007906 compression Methods 0.000 description 20
- 238000000034 method Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 10
- 238000006073 displacement reaction Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 238000012856 packing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
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- Gasket Seals (AREA)
Abstract
The utility model provides a pipeline sealing and connecting device which comprises a sleeve, a pipeline and a sealing ring. The inner wall of the sleeve is provided with a sealing groove, the depth of the sealing groove is gradually reduced from the end far away from the pipeline to the end close to the pipeline, the sealing ring is embedded into the sealing groove, the sealing ring is matched with the sealing groove, and a cavity is formed between the sealing ring and the sealing groove. According to the pipeline sealing and connecting device, the inner pressure bearing level is high, and installation is easy to achieve when the sleeve is connected with the pipeline.
Description
Technical field
The utility model relates to pipeline connection technology field, relates in particular to a kind of sealed connection device for pipeline.
Background technique
In the work progress of sewage conduct or aqueduct, for anti-sealing, reveal, need to carry out Seal Design at pipeline junction.
At present, the mode that pipeline connects is mainly sleeve and connects.Fig. 1 is the structural representation of existing sealed connection device for pipeline, as shown in Figure 1, this device comprise sleeve 11, pipeline 12 to be connected and be arranged at sleeve 11 and pipeline 12 between seal ring 13 for sealing.Wherein, seal ring 13 is wedge shape or profile of tooth seal ring, and seal ring 13 is fixed on pipeline 12 by cementing mode, between seal ring 13 and sleeve 11, by compression, realizes sealing.
But there is following defect in prior art: for convenience of sleeve, be connected with the installation between pipeline, seal ring precompression ratio in the radial direction can not arrange excessive, and be to improve the level of bearing interior pressure, realize good compressive sealed performance, seal ring precompression is in the radial direction more too small than not arranging again, therefore seal ring precompression is in the radial direction than being conventionally set to a neither excessive only little value, 25%-30% for example, but the level of be difficult for installing and bearing interior pressure when a kind of like this half-way house causes sleeve to be connected with pipeline is lower (being generally no more than 0.6Mpa) also.
Model utility content
The utility model provides a kind of sealed connection device for pipeline, and the level of be difficult for installing and bearing interior pressure while being connected with pipeline in order to solve the sleeve existing in prior art is the problem of lower (being generally no more than 0.6Mpa) also.
The utility model provides a kind of sealed connection device for pipeline, comprises sleeve, pipeline and seal ring, wherein:
On the inwall of described sleeve, be provided with seal groove, the degree of depth of described seal groove reduces gradually from the one end away from described pipeline to the one end near described pipeline;
Described seal ring embeds in described seal groove, and described seal ring mates with described seal groove, and is provided with cavity between described seal ring and described seal groove.
In sealed connection device for pipeline as above, be provided with a plurality of grooves on the inwall of described seal ring, described groove extends along the circumferencial direction of described seal ring, and the deformation direction of described groove is the direction away from described pipeline.
In sealed connection device for pipeline as above, the difference of the maximum value of the maximum value of the thickness of described seal ring and the degree of depth of described seal groove is greater than the poor of the internal diameter of described sleeve and the external diameter of described pipeline.
In sealed connection device for pipeline as above, the maximum value of the external diameter of described seal ring is greater than the maximum value sum of the internal diameter of described sleeve and the degree of depth of described seal groove.
In sealed connection device for pipeline as above,
Described seal groove comprises the first side, bottom surface and the second side, the outer wall vertical of described the first side and described sleeve, and the angle between described the second side and described bottom surface is equal to, or greater than 90 °, and described bottom surface and described the first side are the first acute angle;
Described seal ring comprises the 3rd side and the 4th side, and described the 3rd side is vertical with the inwall of described seal ring respectively with described the 4th side, and the outer wall of described seal ring and described the 3rd side are the second acute angle;
Described the first acute angle is greater than described the second acute angle.
In sealed connection device for pipeline as above, the difference of described the first acute angle and described the second acute angle is 4 °-5 °.
In sealed connection device for pipeline as above, the angle between described the second side and described bottom surface is 110 °-120 °.
In sealed connection device for pipeline as above, the precompression in the radial direction of described seal ring is than being 19%-23%.
In sealed connection device for pipeline as above, the shore hardness of described seal ring is 70 ± 5 degree.
In sealed connection device for pipeline as above, described pipeline comprises: fluting pipe laying or push pipe.
The sealed connection device for pipeline that the utility model provides, owing to being provided with cavity between seal ring and described seal groove, when pipeline internal water pressure strengthens, push seal ring to cavity, make seal ring compressive strain, improved seal ring compression ratio in the radial direction, for example maximum compression ratio is set to 27%-38% conventionally, the highlyest bear interior pressure and can reach 2.5Mpa, the level of therefore bearing interior pressure is higher.And during due to initial installation, seal ring precompression is in the radial direction smaller, for example, be conventionally set to 19%-23%, when sleeve is connected with pipeline, more easily installs.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing sealed connection device for pipeline;
The embodiment's of sealed connection device for pipeline that Fig. 2 provides for the utility model structural representation;
Fig. 3 is the structural representation of the seal groove in embodiment illustrated in fig. 2;
Fig. 4 is the structural representation of the seal ring in embodiment illustrated in fig. 2;
Fig. 5 is seal ring in embodiment illustrated in fig. 2 and a schematic diagram of angle contrast of seal groove;
Fig. 6 is that seal ring in embodiment illustrated in fig. 2 and the angle of seal groove contrast another schematic diagram;
Fig. 7 is compression ratio schematic diagram during its pre-compressed state after sleeve that seal ring is housed in embodiment illustrated in fig. 2 is connected with pipeline;
Fig. 8 is compression ratio schematic diagram during initial internal pressure state after sleeve that seal ring is housed in embodiment illustrated in fig. 2 is connected with pipeline;
Fig. 9 be high after sleeve that seal ring is housed in embodiment illustrated in fig. 2 is connected with pipeline in compression schematic diagram during pressure condition.
Embodiment
Below by specific embodiment and accompanying drawing, the technical solution of the utility model is described in further detail.
The embodiment's of sealed connection device for pipeline that Fig. 2 provides for the utility model structural representation.As shown in Figure 2, this device specifically can comprise: sleeve 11, pipeline 12 and seal ring 13, wherein:
On the inwall 21 of sleeve 11, be provided with seal groove 22, the degree of depth of seal groove 22 reduces gradually from the one end away from pipeline 12 to the one end near pipeline 12;
In seal ring 13 embedding sealing grooves 22, seal ring 13 mates with seal groove 22, and is provided with cavity between seal ring 13 and seal groove 22.
Concrete, the pipeline 12 in the present embodiment is specifically as follows fluting pipe laying or push pipe etc. according to the difference of form of construction work; According to the difference of purposes, be specifically as follows aqueduct or sewage conduct etc.Seal ring 13 is specifically as follows the existing various flexible software seal ring that has, such as: aqueduct connects the EPT rubber packing circle adopting, the neoprene packing circle that sewage conduct connects employing etc.The shore hardness of seal ring 13 is specifically as follows 70 ± 5 degree (HA).On the inwall 23 of seal ring 13, can be provided with a plurality of profile of tooth grooves, the shape of profile of tooth groove is specifically as follows " V " type etc., and profile of tooth groove extends along the circumferencial direction of seal ring 13, and the deformation direction of profile of tooth groove is the direction away from pipeline 12.Seal ring 13 mates with seal groove 22, thickness also reduces gradually, and the difference of the maximum value of the degree of depth of the maximum value of the thickness of seal ring 13 and seal groove 22 is greater than the poor of the internal diameter of sleeve 11 and the external diameter of pipeline 12, the maximum value of the external diameter of seal ring 13 is greater than the maximum value sum of the internal diameter of sleeve 11 and the degree of depth of seal groove 22, and the width of the outer wall 24 of seal ring 13 is less than the width of the bottom surface 25 of seal groove 22.
The installation connection procedure of this device is as follows:
Seal ring 13 is arranged in the seal groove 22 on sleeve 11 inwalls 21, because the maximum value of the external diameter of seal ring 13 is greater than the maximum value sum of the internal diameter of sleeve 11 and the degree of depth of seal groove 22, therefore can it be pushed in seal groove 22 naturally by seal ring 13 circumferencial direction compressions, and a part that makes seal ring 13 extends outside seal groove 22 in a circumferential direction uniformly, finally seal ring 13 is extended and part outside seal groove 22 and simultaneously in indentation sealing groove 22, guarantee on seal ring 13 circumferencial directions that compression evenly with equal pressure.When seal ring 13 packs seal groove 22 into, the compression ratio on seal ring 13 circumferencial directions is specifically as follows 3%-5%.Because the width of the outer wall 24 of seal ring 13 is less than the width of the bottom surface 25 of seal groove 22, so seal ring 13 is completely in embedding sealing groove 22, and can also leave cavity between seal ring 13 and seal groove 22.
The sleeve 11 that seal ring 13 is installed is connected on the pipeline 12 of fixed position, or the pipeline 12 for the treatment of fixed position is connected to fixed position and is provided with on the sleeve 11 of seal ring 13, because the difference of the maximum value of thickness of seal ring 13 and the maximum value of the degree of depth of seal groove 22 is greater than the poor of the internal diameter of sleeve 11 and the external diameter of pipeline 12, therefore in the connection procedure of sleeve 11 and pipeline 12, between seal ring 13 and pipeline 12, can there is to push and produce frictional force, on the inwall 23 of seal ring 13, be provided with a plurality of profile of tooth grooves, on the inwall 23 of seal ring 13, be provided with a plurality of toothed projections in other words, toothed projections under pressure and frictional force effect towards away from the direction generation deformation of pipeline 12, simultaneously seal ring 13 is at pressure be moved to the position of seal groove 22 degree of depth maximums under frictional force effect along the direction of displacement of the relative sleeve pipe 11 of pipeline 12 during connection procedure is installed (be in Fig. 2 from right to left), as shown in Figure 2, seal ring 13 is moved to the high order end of seal groove 22, the compression ratio of this state lower seal 13 is precompression ratio, be that the interior hydraulic pressure of pipeline 12 is the compression ratio of 0 o'clock seal ring 13, the precompression ratio of seal ring 13 is specifically as follows 19%-23%.
When the interior hydraulic pressure of pipeline 12 is equal to or less than the frictional force between the inwall 23 of seal ring 13 and the outer wall 26 of pipeline 12, position and the shape of seal ring 13 remain unchanged.When the interior hydraulic pressure of pipeline 12 is greater than the frictional force between the inwall 23 of seal ring 13 and the outer wall 26 of pipeline 12, seal ring 13 is subjected to displacement along the direction of displacement (be in Fig. 2 from left to right) that connection procedure middle sleeve 11 relative duct size 12 are installed, and in place moving past in journey, because the degree of depth of seal groove 22 reduces gradually along the direction of displacement (be in Fig. 2 from left to right) that connection procedure middle sleeve 11 relative duct size 12 are installed, the thickness of seal ring 13 also reduces gradually along the direction of displacement (be in Fig. 2 from left to right) that connection procedure middle sleeve 11 relative duct size 12 are installed, therefore the compression ratio of seal ring 13 increases gradually, be that the final anti-interior hydraulic pressure performance of seal ring 13 is greater than the anti-interior hydraulic pressure performance under the initial its pre-compressed state of seal ring 13, and because the deformation direction of the toothed projections arranging on the inwall 23 of seal ring 13 is the direction away from pipeline 12, therefore under the effect of interior hydraulic pressure, can realize selfsealings, further improved anti-interior hydraulic pressure performance.
Further, Fig. 3 is the structural representation of the seal groove in embodiment illustrated in fig. 2, as shown in Figure 3, seal groove 22 comprises the first side 31, bottom surface 25 and the second side 32, wherein: the first side 31 of seal groove 22 and the outer wall vertical of sleeve, the second side 32 of seal groove 22 and the angle between the bottom surface 25 of seal groove 22 are equal to, or greater than 90 °, and the bottom surface 25 of seal groove 22 is the first acute angle with the first side 31 of seal groove 22.
Concrete, the sectional shape of seal groove 22 circumferencial directions is specifically as follows trapezoidal (the second side 32 of seal groove 22 and the angle between the bottom surface 25 of seal groove 22 equal 90 °), (the second side 32 of seal groove 22 and the angle between the bottom surface 25 of seal groove 22 equal 180 ° to triangle, be that the second side 32 of seal groove 22 and the bottom surface of seal groove 22 25 is same plane) or quadrilateral as shown in Figure 3 (the second side 32 of seal groove 22 and the angle between the bottom surface 25 of seal groove 22 are greater than 90 ° and be less than 180 °, and optimized angle is 110 °-120 °).For describing more specifically the dimensional fits relation of seal groove 22 and seal ring 13, take DN1500 pipeline sealing structure as example, the example of size of seal groove 22 each several parts shown in Fig. 3 is as follows: the radial length of the first side 31 of seal groove 22, the maximum depth that is seal groove 22 is 18.3 millimeters (mm), the width of the bottom surface 25 of seal groove 22 is projected as 36mm on the axial direction of sleeve 11, angle between the bottom surface 25 of seal groove 22 and the axial direction of sleeve 11 (be in Fig. 3 from left to right) is 10.47 °, the second side 32 of seal groove 22 with connection procedure is installed in angle between the direction of displacement (be in Fig. 3 from right to left) of the relative sleeve pipe 11 of pipeline 12 be 64 °.
Further, Fig. 4 is the structural representation of the seal ring in embodiment illustrated in fig. 2, as shown in Figure 4, the 3rd side 41 that seal ring 13 comprises and the 4th side 42, the 3rd side 41 is vertical with the inwall 23 of seal ring 13 respectively with the 4th side 42, and the outer wall 24 of seal ring 13 is the second acute angle with the 3rd side 41 of seal ring 13.
Concrete, the shape of seal ring 13 matches with the seal groove 22 shown in Fig. 3.For describing more specifically the dimensional fits relation of seal groove 22 and seal ring 13, take DN1500 pipeline sealing structure as example, the example of size of seal ring 13 each several parts shown in Fig. 4 is as follows: the radial length of the 3rd side 41 of seal ring 13, the maximum ga(u)ge that is seal ring 13 is 26 millimeters (mm), the width of the inwall 23 of seal ring 13 is that the width of outer wall 24 of seal ring 13 is projected as 35mm on the direction of displacement that connection procedure middle sleeve 11 relative duct size 12 are installed, the space width of the toothed projections on the inwall 23 of seal ring 13 is 5mm, the height of toothed projections is 7mm, the outer wall 24 of seal ring 13 is 14.66 ° with the angle of the circumferencial direction of seal ring 13.
Further, Fig. 5 is seal ring in embodiment illustrated in fig. 2 and a schematic diagram of angle contrast of seal groove, and Fig. 6 is that seal ring in embodiment illustrated in fig. 2 and the angle of seal groove contrast another schematic diagram.As shown in Figure 5, Figure 6, with the size of the seal groove shown in Fig. 3 and the seal ring shown in Fig. 4, be of a size of example, the first acute angle between the first side 31 of the bottom surface 25 of seal groove 22 and seal groove 22 is greater than the second acute angle between the outer wall 24 of seal ring 13 and the 3rd side 41 of seal ring 13, and differ 4.19 °, be convenient to sleeve 11 and be connected with the installation between pipeline 12, avoid the toothed projections of the inwall 23 of seal ring 13 to topple or distortion.The difference of the second acute angle between the first acute angle between the first side 31 of the bottom surface 25 of seal groove 22 and seal groove 22 and the outer wall 24 of seal ring 13 and the 3rd side 41 of seal ring 13 is specifically as follows 4 °-5 °.
Further, Fig. 7 is compression ratio schematic diagram during its pre-compressed state after sleeve that seal ring is housed in embodiment illustrated in fig. 2 is connected with pipeline, as shown in Figure 7, with the size of the seal groove shown in Fig. 3 and the seal ring shown in Fig. 4, be of a size of example, if the difference of the external diameter of the internal diameter of sleeve 11 and pipeline 12 is 2mm, the compression ratio of its pre-compressed state lower seal 13 is 19%-22%.
Fig. 8 is compression ratio schematic diagram during initial internal pressure state after sleeve that seal ring is housed in embodiment illustrated in fig. 2 is connected with pipeline, as shown in Figure 8, when hydraulic pressure increases gradually, seal ring 13 starts along the direction of displacement that connection procedure middle sleeve 11 relative duct size 12 are installed (be Fig. 8 from left to right) mobile from the state shown in Fig. 7, when seal ring 13 arrives the bottom surface of seal groove 22 and the intersection line of the second side, the compression ratio of initial internal pressure state lower seal 13 is 20.3%-24%.
Fig. 9 be high after sleeve that seal ring is housed in embodiment illustrated in fig. 2 is connected with pipeline in compression ratio schematic diagram during pressure condition, as shown in Figure 9, when hydraulic pressure continues to increase, seal ring 13 starts along the direction of displacement that connection procedure middle sleeve 11 relative duct size 12 are installed (be Fig. 8 from left to right) mobile from the state shown in Fig. 8, and there is Volume Changes, until the toothed projections of seal ring 13 trend flattens, in this is high, the compression ratio of pressure condition lower seal 13 sharply increases to 27%-38%.
The sealed connection device for pipeline that the present embodiment provides, owing to being provided with cavity between seal ring and described seal groove, when pipeline internal water pressure strengthens, push seal ring to cavity, make seal ring compressive strain, improved seal ring compression ratio in the radial direction, for example maximum compression ratio is set to 27%-38% conventionally, the highlyest bear interior pressure and can reach 2.5Mpa, the level of therefore bearing interior pressure is higher.And during due to initial installation, seal ring precompression is in the radial direction smaller, for example, be conventionally set to 19%-23%, when sleeve is connected with pipeline, more easily installs.
Finally it should be noted that: each embodiment, only in order to the technical solution of the utility model to be described, is not intended to limit above; Although the utility model is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: its technological scheme that still can record aforementioned each embodiment is modified, or some or all of technical characteristics is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the scope of each embodiment's technological scheme of the utility model.
Claims (10)
1. a sealed connection device for pipeline, comprises sleeve, pipeline and seal ring, it is characterized in that:
On the inwall of described sleeve, be provided with seal groove, the degree of depth of described seal groove reduces gradually from the one end away from described pipeline to the one end near described pipeline;
Described seal ring embeds in described seal groove, and described seal ring mates with described seal groove, and is provided with cavity between described seal ring and described seal groove.
2. device according to claim 1, is characterized in that, is provided with a plurality of grooves on the inwall of described seal ring, and described groove extends along the circumferencial direction of described seal ring, and the deformation direction of described groove is the direction away from described pipeline.
3. device according to claim 1 and 2, is characterized in that, the difference of the maximum value of the maximum value of the thickness of described seal ring and the degree of depth of described seal groove is greater than the poor of the internal diameter of described sleeve and the external diameter of described pipeline.
4. device according to claim 1 and 2, is characterized in that, the maximum value of the external diameter of described seal ring is greater than the maximum value sum of the internal diameter of described sleeve and the degree of depth of described seal groove.
5. device according to claim 1 and 2, it is characterized in that, described seal groove comprises the first side, bottom surface and the second side, the outer wall vertical of described the first side and described sleeve, angle between described the second side and described bottom surface is equal to, or greater than 90 °, and described bottom surface and described the first side are the first acute angle;
Described seal ring comprises the 3rd side and the 4th side, and described the 3rd side is vertical with the inwall of described seal ring respectively with described the 4th side, and the outer wall of described seal ring and described the 3rd side are the second acute angle;
Described the first acute angle is greater than described the second acute angle.
6. device according to claim 5, is characterized in that, the difference of described the first acute angle and described the second acute angle is 4 °-5 °.
7. device according to claim 5, is characterized in that, the angle between described the second side and described bottom surface is 110 °-120 °.
8. device according to claim 1 and 2, is characterized in that, the precompression in the radial direction of described seal ring is than being 19%-23%.
9. device according to claim 1 and 2, is characterized in that, the shore hardness of described seal ring is 70 ± 5 degree.
10. device according to claim 1 and 2, is characterized in that, described pipeline comprises: fluting pipe laying or push pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420238732.XU CN203836427U (en) | 2014-05-09 | 2014-05-09 | Pipeline sealing and connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420238732.XU CN203836427U (en) | 2014-05-09 | 2014-05-09 | Pipeline sealing and connecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203836427U true CN203836427U (en) | 2014-09-17 |
Family
ID=51514268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420238732.XU Expired - Fee Related CN203836427U (en) | 2014-05-09 | 2014-05-09 | Pipeline sealing and connecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203836427U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106704754A (en) * | 2017-01-18 | 2017-05-24 | 江西汉通实业有限公司 | Throttling plastic pipe |
| CN111396668A (en) * | 2020-04-30 | 2020-07-10 | 广东联塑科技实业有限公司 | Quick buckle connecting pipe fitting |
-
2014
- 2014-05-09 CN CN201420238732.XU patent/CN203836427U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106704754A (en) * | 2017-01-18 | 2017-05-24 | 江西汉通实业有限公司 | Throttling plastic pipe |
| CN111396668A (en) * | 2020-04-30 | 2020-07-10 | 广东联塑科技实业有限公司 | Quick buckle connecting pipe fitting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 |