CN211344401U - Pipeline expansion joint locking structure for narrow space - Google Patents
Pipeline expansion joint locking structure for narrow space Download PDFInfo
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- CN211344401U CN211344401U CN202020039702.1U CN202020039702U CN211344401U CN 211344401 U CN211344401 U CN 211344401U CN 202020039702 U CN202020039702 U CN 202020039702U CN 211344401 U CN211344401 U CN 211344401U
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- flange
- pipeline
- bolt
- expansion joint
- fastening
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- 238000007789 sealing Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 abstract description 13
- 238000006073 displacement reaction Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model discloses a pipeline telescopic joint locking structure for narrow and small space changes the mounting means of pipeline telescopic joint into radial installation by traditional screw rod axial perforation formula, has thoroughly solved the difficult problem of unable implementation operation because installation space is not enough at the pipeline telescopic joint in narrow and small space when having guaranteed flange joint strength and leakproofness.
Description
The technical field is as follows:
the utility model relates to a hydraulic turbine field especially relates to a pipeline telescopic joint locking structure for narrow and small space.
Background art:
in some local areas of the hydraulic mechanical test bed, due to the limitation of space, the structure of a pressure pipeline is complex, and the conditions of special-shaped pipelines and pipeline turning are more, so the length and the installation space of the pipeline are often not as sufficient as the space of other fluid conveying pipelines, therefore, the installation, adjustment and replacement processes of the pipeline are often difficult to implement due to narrow space, the conventional expansion joint cannot be used, and sometimes even the pipeline installation scheme has to be replaced due to limited space. Therefore, the development of a telescopic pipe joint structure for a narrow space is urgently needed.
The invention content is as follows:
the utility model discloses a pipeline telescopic joint locking structure for narrow and small space. The technical scheme is as follows: a first flange (14) on a first pipeline (1) is connected with a second flange (15) on an expansion joint (6) through a first bolt (12) and a first nut (13) and sealed through a first sealing ring (20), a third flange (18) on a second pipeline (8) is connected with a movable flange (19) on the expansion joint (6) through a second bolt (16) and a second nut (17) and sealed through a second sealing ring (7), a plurality of pairs of fastening pressing plates (2) with U-shaped grooves and locking pin holes are distributed on the flange excircles of the first flange (14) and the third flange (18) in a one-to-one correspondence mode, the fastening pressing plates (2) are fixed in a combined mode through a third bolt (4) and a fourth bolt (11), and each pair of fastening pressing plates (2) are fastened through 1 screw (5) and 4 locking nuts (3) positioned on two sides of each pair of fastening pressing plates (2), a flat head pin (9) with a hole is inserted into a pin hole above the U-shaped groove of the fastening pressure plate (2) and locked by a cotter pin (10).
The working principle is as follows:
the pressure steel pipe expansion joint that can freely stretch out and draw back passes through the bolt and is connected with both sides pipe connection, distribute the many pairs of fastening clamp plates that have U type groove and locking pin hole that close the fixed through the bolt that the position one-to-one corresponds on the flange excircle of both sides pipeline, every is to fastening clamp plate by 1 screw rod and 4 lock nuts that are located the clamp plate inside and outside respectively with two fastening clamp plates fastening, many pairs of fastening clamp plates after the fastening lock expansion joint axial and twist reverse the direction displacement, insert the pin after the locking, prevent that the screw rod from becoming flexible and droing. The locking structure for the telescopic joint of the pipeline in the narrow space successfully solves the problem that the telescopic joint in the narrow space cannot be locked.
The technical effects are as follows:
the utility model has the characteristics of the operation is safe simple and convenient, need not special professional equipment, easy dismounting, implementation space are little. The structure can greatly improve the installation and fixation operability of the axial pipeline connection expansion joint in a narrow space while ensuring the use safety and reliability of the pipeline. Due to the adoption of the external application type installation structure, the original telescopic joint and the flange fixing installation hole of the connecting pipeline are extended essentially, so that the original narrow installation space is effectively utilized, the basic function of preventing the telescopic joint from generating axial and rotation direction displacement, which is possessed by the conventional telescopic joint, is retained, and meanwhile, the installation mode of the telescopic joint fixing screw rod is changed from the traditional axial through hole type installation into the radial installation, and the problem that the conventional telescopic joint cannot be provided with the fixing screw rod due to the insufficient installation space in the narrow space is thoroughly solved.
Description of the drawings:
FIG. 1 is an axial sectional view of a locking structure of a telescopic joint used in a narrow space
FIG. 2 is a partial normal sectional view of a telescopic joint structure of a pipeline used in a narrow space
FIG. 3 is a view showing the structure of a fastening plate with a U-shaped groove and a locking pin hole
The specific implementation mode is as follows:
as shown in figures 1, 2 and 3, a pipeline expansion joint locking structure for a narrow space connects a first flange 14 on a first pipeline 1 and a second flange 15 on an expansion joint 6 together through a first bolt 12 and a first nut 13 and realizes sealing through a first sealing ring 20, connects a third flange 18 on a second pipeline 8 and a movable flange 19 on the expansion joint 6 together through a second bolt 16 and a second nut 17 and realizes sealing through a second sealing ring 7, a plurality of pairs of fastening pressure plates 2 with U-shaped grooves and nail locking pin holes are distributed on the outer circles of the flanges of the first flange 14 and the third flange 18, the fastening pressure plates 2 are correspondingly fixed through third bolts 4 and fourth bolts 11, each pair of fastening pressure plates 2 are tightly fixed through 1 screw 5 and 4 locking nuts 3 positioned at two sides of each pair of fastening pressure plates 2, a flat head hole pin 9 is inserted into a pin hole above the U-shaped groove of the fastening pressure plate 2 and is locked by an open pin 10.
Claims (1)
1. The utility model provides a pipeline telescopic joint locking structure for narrow and small space which characterized by: a first flange (14) on a first pipeline (1) is connected with a second flange (15) on an expansion joint (6) through a first bolt (12) and a first nut (13) and sealed through a first sealing ring (20), a third flange (18) on a second pipeline (8) is connected with a movable flange (19) on the expansion joint (6) through a second bolt (16) and a second nut (17) and sealed through a second sealing ring (7), a plurality of pairs of fastening pressing plates (2) with U-shaped grooves and locking pin holes are distributed on the flange excircles of the first flange (14) and the third flange (18) in a one-to-one correspondence mode, the fastening pressing plates (2) are fixed in a combined mode through a third bolt (4) and a fourth bolt (11), and each pair of fastening pressing plates (2) are fastened through 1 screw (5) and 4 locking nuts (3) positioned on two sides of each pair of fastening pressing plates (2), a flat head pin (9) with a hole is inserted into a pin hole above the U-shaped groove of the fastening pressure plate (2) and locked by a cotter pin (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020039702.1U CN211344401U (en) | 2020-01-09 | 2020-01-09 | Pipeline expansion joint locking structure for narrow space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020039702.1U CN211344401U (en) | 2020-01-09 | 2020-01-09 | Pipeline expansion joint locking structure for narrow space |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211344401U true CN211344401U (en) | 2020-08-25 |
Family
ID=72133808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020039702.1U Active CN211344401U (en) | 2020-01-09 | 2020-01-09 | Pipeline expansion joint locking structure for narrow space |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211344401U (en) |
-
2020
- 2020-01-09 CN CN202020039702.1U patent/CN211344401U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |