CN102635750A - Expansion joint device used for expansion compensation of plastic pipeline - Google Patents
Expansion joint device used for expansion compensation of plastic pipeline Download PDFInfo
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- CN102635750A CN102635750A CN2010105638504A CN201010563850A CN102635750A CN 102635750 A CN102635750 A CN 102635750A CN 2010105638504 A CN2010105638504 A CN 2010105638504A CN 201010563850 A CN201010563850 A CN 201010563850A CN 102635750 A CN102635750 A CN 102635750A
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Abstract
The invention relates to the field of liquid delivery pipelines, and in particular relates to an expansion joint device used for expansion compensation of a plastic pipeline. The expansion joint device comprises a sealing element and an expansion element, and is characterized in that the sealing element consists of a gland head (11), a gland plate (12), a sealing ring (13), a connecting bolt (14) and a split bolt (15), the gland head (11) and the gland plate (12) are both flange joints the middle parts of which are provided with through holes, the expansion element consists of a connecting body (21), an expansion body (22), a reducing joint (23) and a flange joint (24), the connecting body (21) and the expansion body (22) are both in a pipe type the middle of which is through, the gland head (11) is fixed at one end of the connecting body (21), and the reducing joint (23) is fixed at the other end of the connecting body (21). The expansion joint device has the advantages of good compensation effect, simple structure and long service life.
Description
Technical field
The present invention relates to the liquid conducting pipes field, be specially a kind of slip joint device that is used for the plastic pipe flexible compensation.
Background technique
At present; Requisite parts when pipeline is the liquid conveying; Plastic pipe is many to be that raw material is processed with the polyolefin, with its light weight, be prone to excellent properties such as processing, non-corroding, high temperature resistant, high pressure resistant, corrosion-resistant, long lifetime, friction factor be little and obtain extensive use, like drinking-water pipe, effluent discharge pipe, water-cooling tube etc.; Especially in the used hot and cold water pipeline of occasions such as heating, refrigeration and central air-conditioner, just progressively the substituted metal pipeline becomes the development trend of idle call pipe.Yet the linear expansion coeffcient of plastic pipe is bigger, is nearly 10 times of metallic conduit; And the coolant-temperature gage of being carried in the idle call pipe changes greatly; Owing to expand with heat and contract with cold making plastic pipe that bigger linear expansion or contraction take place, during expansion not only the joint will produce bigger pressure stress, pipeline also can be extruded distortion; The joint will produce bigger tensile stress again during contraction, and pipeline also can be drawn back to be split.This is all with the safe handling of serious threat to plastic duct system.Add the method that metal contracts saves between the plastic pipe in order to remedy this defective, to be employed in now, yet; Plastic pipe is along with its Young's modulus of rising of temperature can reduce gradually; Its rigidity intensity also just reduces along with the rising of temperature, and its thrust that can produce also descends thereupon, and therefore small-bore plastic tube just can't produce enough thrust and promote the stainless steel telescopic joint bending; The curved phenomenon of S will appear in stainless steel telescopic joint forfeiture compensating action, plastic pipe.Though large-bore plastics tubing can promote stainless steel telescopic joint; But because of stainless steel telescopic joint is to design according to the little characteristics of metallic conduit deformation quantity; Can't compensate the requirement of the bigger extending amount that plastic pipe causes because of the temperature difference; And the carbon steel slip joint is perishable, the life-span is short, and the Stainless Steel Telescopic Joint cost performance that then costs an arm and a leg is low.It is thus clear that present plastic pipe transporting system exists defective.
Summary of the invention
In order to overcome the defective of existing technology, a kind of sensitive, automatic compensation of reflection, the pipe joint that compensation rate is big are provided, the invention discloses a kind of slip joint device that is used for the plastic pipe flexible compensation.
The present invention reaches goal of the invention through following technological scheme:
A kind of slip joint device that is used for the plastic pipe flexible compensation; Comprise Sealing and extension member, Sealing is connected with extension member, it is characterized in that: Sealing is made up of crownewr head, cover clamp, seal ring, connecting bolt and split bolt; Crownewr head and cover clamp all have the flanged joint of through hole for the middle part; The height of crownewr head and cover clamp equates that the neck flange of cover clamp and the through hole of crownewr head form Spielpassung, has through hole around the flange chassis of crownewr head and cover clamp; The through hole at crownewr head middle part is a shoulder hole; Said shoulder hole has two-stage at least, and the aperture of said shoulder hole increases to the flange chassis from neck flange, is lined with seal ring at the step place of said shoulder hole.
Extension member is made up of connecting body, telescopic body, reducer fitting and flanged joint; Reducer fitting is the frustoconic shape that the middle part has through hole, and its external diameter of bottom surface that the reducer fitting diameter is bigger and internal diameter all equate with the external diameter and the internal diameter of connecting body, have through hole around the flange chassis of flanged joint; Connecting body and telescopic body all are the tubular of middle part perforation; The external diameter of telescopic body and the internal diameter of connecting body form Spielpassung, and the length of telescopic body is less than the length of connecting body, an end fastening flange joint of telescopic body; One end stationary gland head of connecting body, the fixedly reducer fitting of the other end of connecting body.
The neck flange of cover clamp is in the through hole of crownewr head is inserted on crownewr head flange chassis; And the seal ring of pad at crownewr head shoulder hole step place pushed down at the neck flange top of cover clamp, and the flange chassis through hole on every side that passes cover clamp and crownewr head with connecting bolt successively is connected cover clamp fixing with crownewr head.
Telescopic body is inserted from cover clamp flange chassis in the through hole of connecting body, and the flange chassis through hole on every side that passes flanged joint, cover clamp and crownewr head with split bolt successively is connected flanged joint, cover clamp and crownewr head fixing.
The described slip joint device that is used for the plastic pipe flexible compensation is characterized in that: the length of connecting body is 300mm～800mm, and the length of telescopic body is 18%～60% of connecting body length.
The described slip joint device that is used for the plastic pipe flexible compensation; It is characterized in that: the quantity of split bolt is 4～8; The nominal diameter of split bolt is between 12mm～27mm, and the length of split bolt is L+x, wherein; L is crownewr head and flanged joint height sum 2 times 3 times of sums with the used nut height of split bolt, and x gets the length or the 80mm of telescopic body.
The described slip joint device that is used for the plastic pipe flexible compensation; It is characterized in that: the material of crownewr head, cover clamp, connecting body, telescopic body, reducer fitting and flanged joint is all selected any one in polyethylene, PVC, polypropylene, polyamide and the acrylonitrile-butadiene-styrene copolymer for use, the material selection silica gel of seal ring.
The described slip joint device that is used for the plastic pipe flexible compensation is characterized in that: between telescopic body and the flanged joint, between connecting body and the crownewr head, between connecting body and the reducer fitting, all adopt hot melt to connect.
When the present invention uses; One end hot melt of reducer fitting and pipeline is connected, the other end of pipeline is connected with the flanged joint of flange with telescopic body one end, piping flange is identical with the flanged joint of telescopic body one end; During connection; Split bolt is passed piping flange, flanged joint, cover clamp and crownewr head successively, thereby the present invention is connected in the pipeline, when pipeline takes place because of being heated or catching a cold to stretch; Occurrence positions moves between connecting body, telescopic body and the seal ring, thereby has compensated the flexible of pipeline.The invention has the beneficial effects as follows: extending amount is big, and compensation effect is good, and is simple in structure, long service life.
Description of drawings
Fig. 1 is an assembling schematic representation of the present invention.
Embodiment
Below further specify the present invention through specific embodiment.
A kind of slip joint device that is used for the plastic pipe flexible compensation; Comprise Sealing and extension member, as shown in Figure 1, concrete structure is: Sealing is made up of crownewr head 11, cover clamp 12, seal ring 13, connecting bolt 14 and split bolt 15; Crownewr head 11 and cover clamp 12 all have the flanged joint of through hole for the middle part; The height of crownewr head 11 and cover clamp 12 equates that the through hole of the neck flange of cover clamp 12 and crownewr head 11 forms Spielpassung, has through hole around the flange chassis of crownewr head 11 and cover clamp 12; The through hole at crownewr head 11 middle parts is a shoulder hole; Said shoulder hole has two-stage, and the aperture of said shoulder hole increases to the flange chassis from neck flange, is lined with seal ring 13 at the step place of said shoulder hole.
Extension member is made up of connecting body 21, telescopic body 22, reducer fitting 23 and flanged joint 24; Reducer fitting 23 has the frustoconic shape of through hole for the middle part, and its external diameter of bottom surface that reducer fitting 23 diameters are bigger and internal diameter all equate with the external diameter and the internal diameter of connecting body 21, have through hole around the flange chassis of flanged joint 24; Connecting body 21 all is the tubular of middle part perforation with telescopic body 22; The internal diameter of the external diameter of telescopic body 22 and connecting body 21 forms Spielpassung, and the length of telescopic body 22 is less than the length of connecting body 21, an end fastening flange joint 24 of telescopic body 22; One end stationary gland of connecting body 21 11, the other end of connecting body 21 is reducer fitting 23 fixedly.
The neck flange of cover clamp 12 is in the through hole of crownewr head 11 is inserted on crownewr head 11 flange chassis; And the seal ring 13 of pad at crownewr head 11 shoulder hole step places pushed down at the neck flange top of cover clamp 12, and the flange chassis through hole on every side that passes cover clamp 12 and crownewr head 11 with connecting bolt 14 successively is connected cover clamp 12 fixing with crownewr head 11.
Between telescopic body 22 and the flanged joint 24, between connecting body 21 and the crownewr head 11, between connecting body 21 and the reducer fitting 23, all adopt hot melt to connect.
Present embodiment is applied to central air-conditioner hot and cold water plastic duct system; The plastic pipe external diameter that is connected is that 180mm installation total length is 60m; The plastic pipe material is that the glass in the polypropylene strengthens the brilliant atactic copolymerized polypropene of β, and the heat expansion amount of said plastic pipe is 216mm, and the shrinkage amount is 144mm; Total extending amount is 360mm, and getting 500mm is total extending amount.In the present embodiment, the height of crownewr head 11 and cover clamp 12 all is 100mm, and the height of flanged joint 24 is 80mm; Seal ring 13 is selected silica gel for use, and the width of seal ring 13 is that 15mm highly is 10mm, and the length of connecting body 21 is 500mm; The length of telescopic body 22 is 250mm, and the quantity of connecting bolt 14 is 8, and connecting bolt 14 is selected the bolt of M20 * 100 that the A3 steel processes for use; The quantity of split bolt 14 is 4; It is 20mm that split bolt 14 is selected the height of the nut that M12 bolt that the A3 steel processes and split bolt 14 mated for use, and the length of split bolt 14 is L+x; Wherein, L=(crownewr head 11 height+flanged joints 24 height) * 2+ split bolt 14 used nut height * 3+250=(100+80) * 2+20 * 3+250=670mm.Crownewr head 11, cover clamp 12, connecting body 21, telescopic body 22, reducer fitting 23 and flanged joint 24 all select for use the glass in the polypropylene to strengthen the brilliant atactic copolymerized polypropene of β.
When present embodiment uses; One end hot melt of reducer fitting 23 and central air-conditioner hot and cold water plastic pipe is connected; The other end of pipeline is connected with the flanged joint 24 of flange with telescopic body 22 1 ends, and piping flange is identical with the flanged joint 24 of telescopic body 22 1 ends, during connection; Split bolt 14 is passed piping flange, flanged joint 24, cover clamp 12 and crownewr head 11 successively, thereby the present invention is connected in the pipeline.
Embodiment 2
A kind of slip joint device that is used for the plastic pipe flexible compensation; Comprise Sealing and extension member; As shown in Figure 1; Concrete structure is: Sealing is made up of crownewr head 11, cover clamp 12, seal ring 13, connecting bolt 14 and split bolt 15, and extension member is made up of connecting body 21, telescopic body 22, reducer fitting 23 and flanged joint 24.
Present embodiment is applied to the radiator heating plastic duct system; Water temperature is 85 ℃; The plastic pipe external diameter that is connected is that 500mm installation total length is 40m, and the plastic pipe material is that the glass in the polypropylene strengthens the brilliant atactic copolymerized polypropene of β, and the heat expansion amount of said plastic pipe is 312mm; Total extending amount is 312mm, and getting 400mm is total extending amount.In the present embodiment, the height of crownewr head 11 and cover clamp 12 all is 160mm, and the height of flanged joint 24 is 120mm; Seal ring 13 is selected silica gel for use, and the width of seal ring 13 is that 20mm highly is 15mm, and the length of connecting body 21 is 450mm; The length of telescopic body 22 is 80mm, and the quantity of connecting bolt 14 is 8, and connecting bolt 14 is selected the bolt of M20 * 130 that the A3 steel processes for use; The quantity of split bolt 14 is 8; It is 22mm that split bolt 14 is selected the height of the nut that M18 bolt that the A3 steel processes and split bolt 14 mated for use, and the length of split bolt 14 is L+x; Wherein, L=(crownewr head 11 height+flanged joints 24 height) * 2+ split bolt 14 used nut height * 3+250=(160+120) * 2+22 * 3+80=706mm.Other structures and method for using are all same with embodiment 1.
Embodiment 3
A kind of slip joint device that is used for the plastic pipe flexible compensation; Comprise Sealing and extension member; As shown in Figure 1; Concrete structure is: Sealing is made up of crownewr head 11, cover clamp 12, seal ring 13, connecting bolt 14 and split bolt 15, and extension member is made up of connecting body 21, telescopic body 22, reducer fitting 23 and flanged joint 24.In the present embodiment, the length of connecting body 21 is 300mm, and the length of telescopic body 22 is 105mm; The quantity of split bolt 14 is 6; The M27 bolt that split bolt 14 selects for use the A3 steel to process, the length of split bolt 14 are L+x, wherein; L is crownewr head 11 and flanged joint 24 height sums 2 times 3 times of sums with split bolt 14 used nut height, and x gets 105mm.The material of crownewr head 11, cover clamp 12, connecting body 21, telescopic body 22, reducer fitting 23 and flanged joint 24 is all selected polyethylene for use.Other structures and method for using are all same with embodiment 1.
Embodiment 4
A kind of slip joint device that is used for the plastic pipe flexible compensation; Comprise Sealing and extension member; As shown in Figure 1; Concrete structure is: Sealing is made up of crownewr head 11, cover clamp 12, seal ring 13, connecting bolt 14 and split bolt 15, and extension member is made up of connecting body 21, telescopic body 22, reducer fitting 23 and flanged joint 24.In the present embodiment, the length of connecting body 21 is 800mm, and the length of telescopic body 22 is 320mm; The quantity of split bolt 14 is 6; The M27 bolt that split bolt 14 selects for use the A3 steel to process, the length of split bolt 14 are L+x, wherein; L is crownewr head 11 and flanged joint 24 height sums 2 times 3 times of sums with split bolt 14 used nut height, and x gets 80mm.The material of crownewr head 11, cover clamp 12, connecting body 21, telescopic body 22, reducer fitting 23 and flanged joint 24 is all selected PVC for use.Other structures and method for using are all same with embodiment 1.
Embodiment 5
A kind of slip joint device that is used for the plastic pipe flexible compensation; Comprise Sealing and extension member; As shown in Figure 1; Concrete structure is: Sealing is made up of crownewr head 11, cover clamp 12, seal ring 13, connecting bolt 14 and split bolt 15, and extension member is made up of connecting body 21, telescopic body 22, reducer fitting 23 and flanged joint 24.In the present embodiment, the material of crownewr head 11, cover clamp 12, connecting body 21, telescopic body 22, reducer fitting 23 and flanged joint 24 is all selected PVC for use.Other structures and method for using are all same with embodiment 1.
Embodiment 6
A kind of slip joint device that is used for the plastic pipe flexible compensation; Comprise Sealing and extension member; As shown in Figure 1; Concrete structure is: Sealing is made up of crownewr head 11, cover clamp 12, seal ring 13, connecting bolt 14 and split bolt 15, and extension member is made up of connecting body 21, telescopic body 22, reducer fitting 23 and flanged joint 24.In the present embodiment, the material of crownewr head 11, cover clamp 12, connecting body 21, telescopic body 22, reducer fitting 23 and flanged joint 24 is all selected PVC for use.Other structures and method for using are all same with embodiment 1.
Embodiment 7
A kind of slip joint device that is used for the plastic pipe flexible compensation; Comprise Sealing and extension member; As shown in Figure 1; Concrete structure is: Sealing is made up of crownewr head 11, cover clamp 12, seal ring 13, connecting bolt 14 and split bolt 15, and extension member is made up of connecting body 21, telescopic body 22, reducer fitting 23 and flanged joint 24.In the present embodiment, the material of crownewr head 11, cover clamp 12, connecting body 21, telescopic body 22, reducer fitting 23 and flanged joint 24 is all selected polyamide for use.Other structures and method for using are all same with embodiment 1.
Embodiment 8
A kind of slip joint device that is used for the plastic pipe flexible compensation; Comprise Sealing and extension member; As shown in Figure 1; Concrete structure is: Sealing is made up of crownewr head 11, cover clamp 12, seal ring 13, connecting bolt 14 and split bolt 15, and extension member is made up of connecting body 21, telescopic body 22, reducer fitting 23 and flanged joint 24.In the present embodiment, the material of crownewr head 11, cover clamp 12, connecting body 21, telescopic body 22, reducer fitting 23 and flanged joint 24 is all selected acrylonitrile-butadiene-styrene copolymer for use.Other structures and method for using are all same with embodiment 1.
Claims (7)
1. a slip joint device that is used for the plastic pipe flexible compensation comprises Sealing and extension member, and Sealing is connected with extension member; It is characterized in that: Sealing is made up of crownewr head (11), cover clamp (12), seal ring (13), connecting bolt (14) and split bolt (15); Crownewr head (11) and cover clamp (12) all have the flanged joint of through hole for the middle part, the height of crownewr head (11) and cover clamp (12) equates that the through hole of the neck flange of cover clamp (12) and crownewr head (11) forms Spielpassung; Have through hole around the flange chassis of crownewr head (11) and cover clamp (12); The through hole at crownewr head (11) middle part is a shoulder hole, and said shoulder hole has two-stage at least, and the aperture of said shoulder hole increases to the flange chassis from neck flange; Be lined with seal ring (13) at the step place of said shoulder hole
Extension member is made up of connecting body (21), telescopic body (22), reducer fitting (23) and flanged joint (24); Reducer fitting (23) has the frustoconic shape of through hole for the middle part; Its external diameter of bottom surface that reducer fitting (23) diameter is bigger and internal diameter all equate with the external diameter and the internal diameter of connecting body (21), have through hole around the flange chassis of flanged joint (24), and connecting body (21) and telescopic body (22) all are the tubular of middle part perforation; The internal diameter of the external diameter of telescopic body (22) and connecting body (21) forms Spielpassung; The length of telescopic body (22) is less than the length of connecting body (21), an end fastening flange joint (24) of telescopic body (22), an end stationary gland head (11) of connecting body (21); The fixedly reducer fitting of the other end (23) of connecting body (21)
The neck flange of cover clamp (12) is in the through hole of crownewr head (11) is inserted on crownewr head (11) flange chassis; And the seal ring (13) of pad at crownewr head (11) shoulder hole step place pushed down at the neck flange top of cover clamp (12); The flange chassis through hole on every side that passes cover clamp (12) and crownewr head (11) with connecting bolt (14) successively is connected cover clamp (12) fixing with crownewr head (11)
Telescopic body (22) is inserted from cover clamp (12) flange chassis in the through hole of connecting body (21), and the flange chassis through hole on every side that passes flanged joint (24), cover clamp (12) and crownewr head (11) with split bolt (15) successively is connected flanged joint (24), cover clamp (12) and crownewr head (11) fixing.
2. the slip joint device that is used for the plastic pipe flexible compensation as claimed in claim 1 is characterized in that: the length of connecting body (21) is 300mm～800mm, and the length of telescopic body (22) is 18%～50% of connecting body (21) length.
3. according to claim 1 or claim 2 the slip joint device that is used for the plastic pipe flexible compensation; It is characterized in that: the quantity of split bolt (14) is 4～8; The nominal diameter of split bolt (14) is between 12mm～27mm, and the length of split bolt (14) is L+x, wherein; L is 2 times of crownewr head (11) and flanged joint (24) height sum 3 times of sums with the used nut height of split bolt (14), and x gets the length or the 80mm of telescopic body (22).
4. according to claim 1 or claim 2 the slip joint device that is used for the plastic pipe flexible compensation; It is characterized in that: the material of crownewr head (11), cover clamp (12), connecting body (21), telescopic body (22), reducer fitting (23) and flanged joint (24) is all selected any one in polyethylene, PVC, polypropylene, polyamide and the acrylonitrile-butadiene-styrene copolymer, the material selection silica gel of seal ring (13) for use.
5. according to claim 1 or claim 2 the slip joint device that is used for the plastic pipe flexible compensation; It is characterized in that: between telescopic body (22) and the flanged joint (24), between connecting body (21) and the crownewr head (11), between connecting body (21) and the reducer fitting (23), all adopt hot melt to connect.
6. the slip joint device that is used for the plastic pipe flexible compensation as claimed in claim 3; It is characterized in that: the material of crownewr head (11), cover clamp (12), connecting body (21), telescopic body (22), reducer fitting (23) and flanged joint (24) is all selected any one in polyethylene, PVC, polypropylene, polyamide and the acrylonitrile-butadiene-styrene copolymer, the material selection silica gel of seal ring (13) for use.
7. want the 5 described slip joint devices that are used for the plastic pipe flexible compensation like right; It is characterized in that: between telescopic body (22) and the flanged joint (24), between connecting body (21) and the crownewr head (11), between connecting body (21) and the reducer fitting (23), all adopt hot melt to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105638504A CN102635750A (en) | 2011-02-15 | 2011-02-15 | Expansion joint device used for expansion compensation of plastic pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105638504A CN102635750A (en) | 2011-02-15 | 2011-02-15 | Expansion joint device used for expansion compensation of plastic pipeline |
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| Publication Number | Publication Date |
|---|---|
| CN102635750A true CN102635750A (en) | 2012-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105638504A Pending CN102635750A (en) | 2011-02-15 | 2011-02-15 | Expansion joint device used for expansion compensation of plastic pipeline |
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| CN (1) | CN102635750A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836280A (en) * | 2012-11-26 | 2014-06-04 | 通用电气公司 | System and method for conveying solids through an outlet pipe |
| CN107456680A (en) * | 2017-07-31 | 2017-12-12 | 绵阳行之智汇知识产权服务有限公司 | A kind of anti-fall device hung for safety belt |
-
2011
- 2011-02-15 CN CN2010105638504A patent/CN102635750A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836280A (en) * | 2012-11-26 | 2014-06-04 | 通用电气公司 | System and method for conveying solids through an outlet pipe |
| CN103836280B (en) * | 2012-11-26 | 2018-01-05 | 通用电气公司 | For the system and method by outlet conveying solid substance |
| CN107456680A (en) * | 2017-07-31 | 2017-12-12 | 绵阳行之智汇知识产权服务有限公司 | A kind of anti-fall device hung for safety belt |
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