CN102003588A - Direct-buried type maintenance-free sleeve compensator - Google Patents
Direct-buried type maintenance-free sleeve compensator Download PDFInfo
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- CN102003588A CN102003588A CN 201010537140 CN201010537140A CN102003588A CN 102003588 A CN102003588 A CN 102003588A CN 201010537140 CN201010537140 CN 201010537140 CN 201010537140 A CN201010537140 A CN 201010537140A CN 102003588 A CN102003588 A CN 102003588A
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Abstract
The invention belongs to the technical field of sleeve compensators, and particularly relates to a direct-buried type maintenance-free sleeve compensator, which is suitable for urban heating direct-buried pipelines. The direct-buried type maintenance-free sleeve compensator adopts a triple sealing structure, a diploid combined sealing structure is arranged between an outer sleeve (13) and end pipes (1 and 15), and the other combined sealing structure is arranged between an end ring (5) connected with an outer sleeve (6) and a sealing guiding sleeve (2) on the end pipes (1 and 15); the first combined sealing structure comprises a combined sealing ring (12), a middle gland bush (9) and a floating pressure ring (11); the diploid sealing structure comprises a gland (10), a gland bush (8) and a hold-down bolt (7) with a combined disc spring; the diploid combined sealing structure and the first sealing structure jointly take effects and effectively prevent a medium in the pipeline from leaking; and the triple sealing structure comprises a sealing guiding sleeve (2), an outer gland bush (3), a gland (4) and a protector hood end ring assembly (5). The invention improves the operation reliability of a pipe network and further decreases the engineering cost.
Description
Technical field
The invention belongs to the sleeve expansion joint technical field, relate generally to a kind of direct built-in non-maintaining sleeve compensator, mainly be applicable to city heat supply direct-burried pipeline.
Background technique
Sleeve expansion joint is the most traditional pipeline compensator, because the cost of sleeve expansion joint is cheap relatively, has therefore obtained applying of certain limit.Sleeve expansion joint generally adopts packing seal, and a side pipe is designed to be with stuffing box, another side Guan Weixin pipe, by gland with filler compacting in stuffing box.During work, the core pipe slides in stuffing box and realizes compensation.The heavy cartridge type compensator of the first generation that with the packing is sealing material is in use owing to the sealing layer abrasion is leaked, and existence must be stopped using the fatal shortcoming of changing filler, has increased very big workload to the maintenance of pipeline.Second generation sleeve expansion joint has increased on the basis of the first generation can pouring-in filler device, and sealing compound injects from the material feeding port depended on pressure, and can after-teeming under the pipe network operation state, and maintenance does not stop production.Use for many years shows that the sealability of second generation sleeve expansion joint has certain change, and maintenance workload has certain minimizing, needs the often problem of maintenance but still exist.
In order to satisfy the appearance of the city and others requirement, underground laying is generally adopted in the urban heating network, and underground laying divides pipe trench to lay and two kinds of directly buried installations again.When heat supply pipeline adopts in-duct installation in order to prevent ground and Leakage of groundwater, destroy the insulating structure and the corrosion pipeline of pipe trench interior conduit, the structure of pipe trench should be tight, the domestic general at present reinforced concrete floor that adopts, masonry or rubble are built furrow bank, reinforced concrete cover plate.When the pipeline that adopts in-duct installation adopts sleeve expansion joint to carry out pipe thermal compensation, general position detection well at the installing sleeve compensator, so that safeguard that for sleeve expansion joint being checked therefore the cost of whole heating network and maintenance cost are than higher with the pressure injection lute.
Concentrated supply of heating in the city has in recent years obtained fast development, and in order to reduce engineering cost, some national experiences of Europe are used for reference in most of cities, heat supply pipeline are adopted directly buried installation, to save a large amount of structural materials and labour cost.When the pipeline employing has the design of compensation direct-burried, generally adopt the direct built-in FlexbleJoint to carry out compensation of pipeline, because the ordinary cartridge compensator needs periodic maintenance, can't be used for directly buried pipeline and compensate, and the price of direct built-in FlexbleJoint is higher relatively.
Summary of the invention
The objective of the invention is to propose a kind of direct built-in non-maintaining sleeve compensator,, further reduce engineering cost to improve the reliability of pipe network operation.
The present invention finishes the technological scheme that its invention task taked:
A kind of direct built-in non-maintaining sleeve compensator adopts the triple seal structure, and double combined sealing structure is located between outer sleeve and the end pipe, and another resealing structure is located at outer casing end ring and holds between the sealing guide sleeve on the pipe; First resealing is made up of combined seal ring, middle gland, the pressure ring that floats; During work, along with the rising of the pressure medium in the pipeline, under the synergy of middle gland, the pressure ring that floats, two lip limits of combined seal ring fit tightly with the block of outer sleeve, the just face of end pipe respectively, implement the sealing of first road; Second resealing is made up of filler packing, gland and the hold-down bolt that has a combination dish spring; During work, gland compresses the filler packing, gland is connected with the flange of outer sleeve by the hold-down bolt that has combination dish spring, combination dish spring makes gland remain compressing filler, remedy because the filler wearing and tearing that the end pipe slides and causes, second resealing and the first resealing synergy have effectively stoped the seepage of pipeline internal medium; The triple seal structure is made up of sealing guide sleeve, outer gland, packing, end ring safety cover assembly; The sealing guide sleeve is located on the end pipe in second resealing outside; outer gland, packing are positioned on the sealing guide sleeve; outer gland compression plate root; the end ring inside of packing upper surface clip end ring protection shade assembly, the safety cover of end ring safety cover assembly is connected with the flange of outer sleeve, forms the triple seal composite structure to reach; during work; the triple seal structure is isolated the infiltration of extraneous medium, reaches the purpose of protection end pipe slip working surface, seal simultaneously guide sleeve also the displacement of opposite end pipe play the guiding role.
The outside and the outer sleeve of described end ring safety cover assembly have outer casing outward, are provided with thermal insulation layer between outer casing and the outer sleeve.
Described insulation temperature layer is a polyurethane foam.
Described end tube-surface sprays the coating of anti-corrosion antifriction function, reduces combined seal ring, filler packing and the wearing and tearing of holding tube-surface.
The present invention has following beneficial effect owing to adopted technological scheme as mentioned above:
1, the present invention is because lip type silicone rubber O-ring and two kinds of rubber of " O " type rubber seal of combined seal ring all have good physical and chemical stability energy, end tube-surface sliding position through spraying treatmen has anti-corrosion antifriction function, make between filler and the end pipe surface of contact and have less rate of depreciation, make the work that sleeve expansion joint can be reliably and with long-term under the direct-burried environment, Maintenance free.
2, be not more than 2 in working pressure, 0MPa, medium temperature is not more than under 150 ℃ the situation, this sleeve expansion joint has adopted triple seal, it is non-maintaining that sleeve expansion joint is really accomplished, when being used for directly buried pipeline and carrying out the pipeline thermal compensation, sealing is reliable.
3, the present invention carries thermal insulation layer, and is on-the-spot easy for installation, and the thermal insulation layer effect of thermal insulation layer and pipeline is suitable.
Description of drawings
Fig. 1 is the structural representation of embodiments of the invention 1.
Fig. 2 is the structural representation of the embodiment of the invention 2.
Among the figure: 1,15, the end pipe, 2, the sealing guide sleeve, 3, outer gland; 4,10, packing; 5, end ring safety cover assembly, 6, outer casing, 7, have a hold-down bolt of combination dish Huang; 8, gland; 9, middle gland, 11, the pressure ring that floats, 12, combined seal ring; 13, outer sleeve, 14, polyurethane insulation coating.
Embodiment
The present invention is further described with embodiment in conjunction with the accompanying drawings:
As shown in Figure 1, Fig. 1 is unidirectional direct built-in non-maintaining sleeve compensator structural representation, adopt the triple seal structure, double sealing configuration is located between outer sleeve 13 and the end pipe 1, and a resealing structure is located at the end ring of outer casing 6 and holds between the sealing guide sleeve 2 of pipe 1; First resealing is made up of combined seal ring 12, middle gland 9, the pressure ring 11 that floats; Described end tube-surface sprays the coating of anti-corrosion antifriction function, reduces combined seal ring, filler packing and the wearing and tearing of holding tube-surface; During work, along with the rising of the pressure medium in the pipeline, under the synergy of middle gland 9, the pressure ring 11 that floats, two lip limits of combined seal ring 13 fit tightly with the block of outer sleeve, the just face of end pipe respectively, implement the sealing of first road; Second resealing is made up of packing 10, gland 8 and the hold-down bolt 7 that has a combination dish spring; During work, gland 8 compresses filler packing 10, gland 8 is connected with the flange of outer sleeve by the hold-down bolt 7 that has combination dish spring, combination dish spring makes gland 8 remain compressing packing filling, remedy because the filler wearing and tearing that the end pipe slides and causes, second resealing and the first resealing synergy have effectively stoped the seepage of pipeline internal medium; The triple seal structure is made up of sealing guide sleeve 2, outer gland 3, packing 4, end ring safety cover assembly 5; Sealing guide sleeve 2 is located on the end pipe 1 in second resealing outside; outer gland 3, packing 4 are positioned on the sealing guide sleeve 2; the end ring inside of packing 4 upper surface clip end ring protection shade assemblies 5; the safety cover of end ring safety cover assembly 5 is connected with the flange of outer sleeve 13; form the triple seal composite structure to reach, during work, the triple seal structure is isolated the infiltration of extraneous medium; reach the purpose of protection end pipe slip working surface, seal simultaneously guide sleeve also the displacement of opposite end pipe play the guiding role.
Has outer casing 6 outside the outside of described end ring safety cover assembly 5 and the outer sleeve 13; be provided with thermal insulation layer between end ring safety cover assembly 5, outer casing 6 and the outer sleeve 13; insulation temperature layer is a polyurethane foam 14, and polyurethane foam 14 is suitable with the heat insulation effect of pipe insulating layer.
As shown in Figure 2, Fig. 2 is the structural representation of the embodiment of the invention 2, and embodiment 2 is two-way non-maintaining direct-burried sleeve expansion joint, and embodiment's structure is identical with embodiment 1, constitute by the triple seal structure, embodiment 2 has the triple seal structure on both direction.
Claims (3)
1. direct built-in non-maintaining sleeve compensator, it is characterized in that: adopt the triple seal structure, double combined sealing structure is located between outer sleeve (13) and the end pipe (1,15), and another recombination sealing configuration is located between the end ring (5) and the sealing guide sleeve (2) on the end pipe (1,15) that connects outer casing (6); First recombination sealing is made up of combined seal ring (12), middle gland (9), the pressure ring (11) that floats; During work, along with the rising of the pressure medium in the pipeline, under the synergy of middle gland (9), the pressure ring (11) that floats, two lip limits of combined seal ring (12) fit tightly with the block of outer sleeve, the just face of end pipe respectively, implement the sealing of first road; Second resealing is made up of packing (10), gland (8) and the hold-down bolt (7) that has a combination dish spring; During work, gland (8) compresses filler packing (10), gland (8) is connected with the flange of outer sleeve by the hold-down bolt (7) that has combination dish spring, combination dish spring makes gland remain compressing filler, second resealing and the first resealing synergy effectively stop the seepage of pipeline internal medium; The triple seal structure is made up of sealing guide sleeve (2), outer gland (3), packing (4), safety cover end ring assembly (5); Sealing guide sleeve (2) is located on the end pipe (1,15) in second resealing outside; outer gland (3), packing (4) are positioned on the sealing guide sleeve; outer gland (3) compresses packing (4); the front-end face of packing (4) upper surface clip end ring protection shade assembly; the front-end face of end ring safety cover assembly is close to outer casing (6); form the triple seal composite structure, during work, the triple seal composite structure is isolated the infiltration of extraneous medium.Sealing guide sleeve (2) is located on the end pipe (1,15) in second resealing outside; outer gland (3), packing (4) are positioned on the sealing guide sleeve (2); the end ring inside of packing (4) upper surface clip end ring protection shade assembly (5); the safety cover of end ring safety cover assembly (5) is connected with the flange of outer sleeve (13); form the triple seal composite structure to reach; during work; the triple seal structure is isolated the infiltration of extraneous medium; reach the purpose of protection end pipe slip working surface, seal simultaneously guide sleeve also the displacement of opposite end pipe play the guiding role.
2. a kind of direct built-in non-maintaining sleeve compensator according to claim 1 is characterized in that: described outer sleeve has outer casing (6) outward, is provided with thermal insulation layer between end ring safety cover assembly (5) and the outer sleeve (13).
3. a kind of direct built-in non-maintaining sleeve compensator according to claim 1, it is characterized in that: described end tube-surface sprays the coating of anti-corrosion antifriction function, reduces combined seal ring, filler packing and the wearing and tearing of holding tube-surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010537140 CN102003588B (en) | 2010-11-10 | 2010-11-10 | Direct-buried type maintenance-free sleeve compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010537140 CN102003588B (en) | 2010-11-10 | 2010-11-10 | Direct-buried type maintenance-free sleeve compensator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102003588A true CN102003588A (en) | 2011-04-06 |
| CN102003588B CN102003588B (en) | 2012-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010537140 Active CN102003588B (en) | 2010-11-10 | 2010-11-10 | Direct-buried type maintenance-free sleeve compensator |
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| CN (1) | CN102003588B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107664242A (en) * | 2016-07-29 | 2018-02-06 | 江苏金通机械有限公司 | Heat-insulated sealing Zero-thrust sleeve type compensator |
| CN113719680A (en) * | 2021-09-02 | 2021-11-30 | 北京市市政二建设工程有限责任公司 | Assembled culvert end connection structure |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3619630A1 (en) * | 1986-06-11 | 1987-12-17 | Hoechst Ag | SECURITY ROTATION |
| CN2354005Y (en) * | 1998-09-24 | 1999-12-15 | 辽河油田银秋实业公司中远波纹管厂 | Safety directly-buried type expansion section of metal corrugated pipe |
| CN2533365Y (en) * | 2002-03-19 | 2003-01-29 | 王振发 | Self-tightening packing type pipeline expansion joint |
| JP2004278757A (en) * | 2003-03-18 | 2004-10-07 | Calsonic Kansei Corp | Three-dimensional spherical joint |
| CN2929421Y (en) * | 2006-06-22 | 2007-08-01 | 宁波万里管道有限公司 | No-resistance axial compensator |
| CN101608726A (en) * | 2009-08-06 | 2009-12-23 | 陈墅庚 | Two-way multifunctional displacement absorption compensator |
| CN101608723A (en) * | 2008-06-21 | 2009-12-23 | 洛阳双瑞特种装备有限公司 | A kind of non-maintaining sleeve compensator with double sealing structure |
| CN201593664U (en) * | 2009-08-06 | 2010-09-29 | 陈墅庚 | Two-way multifunctional displacement absorption compensator |
-
2010
- 2010-11-10 CN CN 201010537140 patent/CN102003588B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3619630A1 (en) * | 1986-06-11 | 1987-12-17 | Hoechst Ag | SECURITY ROTATION |
| CN2354005Y (en) * | 1998-09-24 | 1999-12-15 | 辽河油田银秋实业公司中远波纹管厂 | Safety directly-buried type expansion section of metal corrugated pipe |
| CN2533365Y (en) * | 2002-03-19 | 2003-01-29 | 王振发 | Self-tightening packing type pipeline expansion joint |
| JP2004278757A (en) * | 2003-03-18 | 2004-10-07 | Calsonic Kansei Corp | Three-dimensional spherical joint |
| CN2929421Y (en) * | 2006-06-22 | 2007-08-01 | 宁波万里管道有限公司 | No-resistance axial compensator |
| CN101608723A (en) * | 2008-06-21 | 2009-12-23 | 洛阳双瑞特种装备有限公司 | A kind of non-maintaining sleeve compensator with double sealing structure |
| CN101608726A (en) * | 2009-08-06 | 2009-12-23 | 陈墅庚 | Two-way multifunctional displacement absorption compensator |
| CN201593664U (en) * | 2009-08-06 | 2010-09-29 | 陈墅庚 | Two-way multifunctional displacement absorption compensator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107664242A (en) * | 2016-07-29 | 2018-02-06 | 江苏金通机械有限公司 | Heat-insulated sealing Zero-thrust sleeve type compensator |
| CN113719680A (en) * | 2021-09-02 | 2021-11-30 | 北京市市政二建设工程有限责任公司 | Assembled culvert end connection structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102003588B (en) | 2012-08-22 |
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Address after: 471000, Binhe Road, hi tech Development Zone, Henan, Luoyang, 32 Patentee after: CSSC Shuangrui (Luoyang) special equipment Co.,Ltd. Address before: 471000, Binhe Road, hi tech Development Zone, Henan, Luoyang, 32 Patentee before: LUOYANG SUNRUI SPECIAL EQUIPMENT Co.,Ltd. |
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