CN207176693U - A kind of plug for pressure steel pipe of hydropower station grouting construction - Google Patents
A kind of plug for pressure steel pipe of hydropower station grouting construction Download PDFInfo
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- CN207176693U CN207176693U CN201721251529.6U CN201721251529U CN207176693U CN 207176693 U CN207176693 U CN 207176693U CN 201721251529 U CN201721251529 U CN 201721251529U CN 207176693 U CN207176693 U CN 207176693U
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- plug
- steel pipe
- penstock
- hole
- grout hole
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
A kind of plug for pressure steel pipe of hydropower station grouting construction, including penstock, it is characterized in that：Grout hole is offered on penstock, outer wall is provided with the outer stiffening plate of steel pipe, and outer stiffening plate is provided with screwed hole, and the axis of grout hole and screwed hole is same, grouting plug is provided with grout hole and screwed hole, is in the milk one section that plug is located in grout hole and is provided with external screw thread.Using said structure, the dry environment of plug welding is on the one hand ensure that, advantageously ensures that welding quality；On the other hand plug installation difficulty is effectively reduced.
Description
Technical field
Pressure steel pipe of hydropower station construction field is the utility model is related to, particularly a kind of pressure steel pipe of hydropower station that is used for is in the milk
The plug of construction.
Background technology
Penstock is the important component of hydroulic sturcture, and it is connected the water inlet and the hydraulic turbine in power station
Spiral case, play a part of water introducing spiral case by water inlet to promote the hydraulic turbine to rotate.The common arrangement form of penstock has
Formula, tunnel formula, three kinds of open-air in dam.Tunnel is used in the power station of hydroenergy storage station and dam and reservoir apart from factory building farther out
Hole formula arrangement form.Tunnel formula penstock is typically using the form of the machine of a hole one or a hole multimachine.One power plant building is past
It is past to have multiple diversion tunnels.Because pressure pipeline circuit is longer, while the excavation workload of diversion tunnel is very big, typically can also arrange
Multiple working faces.Simultaneously according to dam hinge traffic arrangement and geologic prospect situation open up one or more for civil engineering excavate,
The passage of the constructions such as supporting, penstock installation, backfill cast, that is, working tunnel of constructing.It is in an installation association in wall scroll penstock
Adjustment construction speed can also carry out multiple working faces；The single assembling of face pressure steel pipe, welding and seam inspection, which are examined, to be closed
After lattice, civil engineering unit is typically by the way of segmentation backfills, according to face condition and backfill pouring type, the length for dividing storehouse to backfill
Degree is usually controlled in 10-30 rice or so, according to wall scroll penstock installation situation, treat concrete setting intensity reach 70% and with
On can carry out rockfill grouting.
The grout hole of rockfill grouting will open up when being often steel pipe manufacture, and grout hole is arranged in steel pipe stringcourse upper bit
Put.I.e. in the range of 120 ° of top, system is symmetrically opened on same section centered on summit, grout hole is complete in grouting works on steel pipe
Blocked into rear needs, how effectively to block is at present in the problem of high-head power station penstock grouting hole plugging, especially
It is how to ensure that effective closure of penstock grout hole is urgent problem to be solved in the case where there is larger external water pressure.
The content of the invention
Technical problem to be solved in the utility model is to provide a kind of for the stifled of pressure steel pipe of hydropower station grouting construction
Head and its construction method, the device and construction method have that construction cost is low, work efficiency is high, safe and reliable, the advantages of being easily achieved,
Efficiently solve the sealing blocked in the case where external water pressure is larger and the reliability of welding.
In order to solve the above technical problems, technical scheme is used by the utility model：One kind is used for hydropower station pressure steel
The plug of pipe grouting construction, including penstock, it is characterized in that：Grout hole is offered on penstock, outer wall is provided with steel pipe
Outer stiffening plate, outer stiffening plate are provided with screwed hole, and the axis of grout hole and screwed hole is same, in grout hole and screwed hole
Provided with grouting plug, it is in the milk one section that plug is located in grout hole and is provided with external screw thread.
In preferable scheme, described grout hole is provided with internal groove, the section of internal groove close to the position of penstock
Diameter is gradually reduced by penstock Inside To Outside.
In preferable scheme, the angle between the side and grout hole axis of described internal groove is 10 ° -15 °, inner slope
The height of mouth is the half of penstock side wall.
In preferable scheme, welded between described internal groove and grouting plug and form watertight weld seam.
In preferable scheme, sealing gasket is additionally provided between described grouting plug and the outer stiffening plate of steel pipe.
A kind of plug for pressure steel pipe of hydropower station grouting construction provided by the utility model, have below beneficial to effect
Fruit：
（1）First Application sleeve pipe, serves to screwed hole in corresponding work progress and is effectively protected, so as to ensure
The good seal of later stage grouting plug；
（2）The material selection of sealing gasket graphite plate root timber material, it has good self lubricity and thermal conductivity, friction system
The advantages that number is small, flexibility is good, intensity is high, high temperature resistant, strong sealing property；
（3）Using the weld seam with groove, steel pipe tube wall solder design intensity is effectively ensured；
（4）Weld job is reduced thermal weld stress amount, is effectively ensured by the way of first minor diameter welding rod current interruption weldering
Welding quality, while steel pipe interior or exterior space can be quickly isolated.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and examples：
Fig. 1 is overall structure diagram of the present utility model.
Fig. 2 is the structural representation during the construction operation of invention.
Fig. 3 be invention grouting plug installation after, the structural representation before weld job.
In figure：Penstock 1, the outer stiffening plate 2 of steel pipe, sealing gasket 3, be in the milk plug 4, watertight weld seam 5, sleeve pipe 6, grout hole
7, internal groove 8, screwed hole 9.
Embodiment
Embodiment 1：
As in Fig. 1-3, a kind of plug for pressure steel pipe of hydropower station grouting construction, including penstock 1, penstock
Grout hole 7 is offered on 1, outer wall is provided with the outer stiffening plate 2 of steel pipe, and outer stiffening plate 2 is provided with screwed hole 9, grout hole 7 and screw thread
The axis in hole 9 is same, and grouting plug 4 is provided with grout hole 7 and screwed hole 9, and grouting plug 4 is located in grout hole 7
One section is provided with external screw thread.
In preferable scheme, described grout hole 7 is provided with internal groove 8 close to the position of penstock 1, internal groove 8
Diameter of section is gradually reduced by the Inside To Outside of penstock 1.
In preferable scheme, the angle between the side and the axis of grout hole 7 of described internal groove 8 is 10 ° -15 °, interior
The height of groove 8 is the half of the side wall of penstock 1.
In preferable scheme, welded between described internal groove 8 and grouting plug 4 and form watertight weld seam 5.
In preferable scheme, sealing gasket 3 is additionally provided between described grouting plug 4 and the outer stiffening plate 2 of steel pipe.
Embodiment 2：
On the basis of embodiment 1, carry out the installation of drainage system using following methods and pour pouring for storehouse：
1）φ 100mm grout hole 7 is preset on penstock 1, and opens up and is in the milk on the inner side hole wall of grout hole 7
The axis of hole 7 is in the internal groove 8 of 10 ° of -15 ° of angles；
2）Stiffening plate 2 outside Coiling Welded Pipe is pasted on the outer wall of pressure pipeline 1, the outer stiffening plate 2 of steel pipe uses and the uniform thickness of pressure pipeline 1
250mm × 250mm arc, its radian determines that and stiffening plate 2 opens up outside steel pipe according to the outer wall radian of penstock 1
M60 screwed holes 9, the axis of screwed hole 9 need to align with the axis of grout hole 7；
3）Carry out tunnel excavation and penstock 1 is installed；
4）Sleeve pipe 6 is set on the grout hole 7 of penstock 1, and sleeve pipe 6 is provided with external screw thread, sleeve pipe 6 and the outer reinforcement of steel pipe
Screwed hole 9 on plate 2 is connected through a screw thread realization, and both are fixed；
5）Sleeve 6 carries out backfill after installing and pours cementing operations；
6）The grout sealing operation of penstock 1 is carried out, first dismantles setting of casing 6 before blocking operation, and grout hole 7 is carried out
Cleaning, is then attached to stiffening plate 2 outside steel pipe by sealing gasket 3 and is located in the side wall in grout hole 7, finally installation grouting plug 4,
Fixation of the grouting plug 4 on grout hole 7 is realized using screw thread；
7）The triangle cylindrical space formed between internal groove 8 and grouting plug 4 is welded, forms watertight weld seam 5.
In preferable scheme, described grouting plug 4 uses Q345B or 35# round steel processing and fabricatings.
In preferable scheme, described step 6）In, the prune job of grout hole 7 include welding position, hermetic seal face,
Flank and the processing of concrete water-permeating situation.
In preferable scheme, described step 7）In weld job using welding rod arc soldering method coordinate hydrogen controlled electrode
Carry out, weld job first coordinates current interruption weldering mode to carry out quick back cover welding using 3.2mm minor diameters welding rod, then using 4mm
Diameter welding rod is successively by road welding.
In preferable scheme, the rubber blanket 3 in described step 6 is made using graphite plate root timber material.
Interlock last procedure constructed as penstock installation with civil engineering unit, and often construction environment is severe, work
Sequence complex operation, the construction of penstock plug are the Key Quality control points in pressure pipeline installation.And use said structure and
Method, the dry environment of plug welding is on the one hand ensure that, advantageously ensures that welding quality；On the other hand plug is effectively reduced
Installation difficulty；This is not only a kind of method rapidly and efficiently, and the best mode of safety economy, promotes penstock peace
Technological progress is filled, is on active service safely for power station penstock and is provided with sharp condition.
Claims (5)
1. a kind of plug for pressure steel pipe of hydropower station grouting construction, including penstock（1）, it is characterized in that：Penstock
（1）On offer grout hole（7）, outer wall is provided with the outer stiffening plate of steel pipe（2）, outer stiffening plate（2）It is provided with screwed hole（9）, fill
Starch hole（7）And screwed hole（9）Axis be same, grout hole（7）And screwed hole（9）In be provided with grouting plug（4）, grouting
Plug（4）Positioned at grout hole（7）Interior one section is provided with external screw thread.
A kind of 2. plug for pressure steel pipe of hydropower station grouting construction according to claim 1, it is characterised in that：It is described
Grout hole（7）Close to penstock（1）Position be provided with internal groove（8）, internal groove（8）Diameter of section by penstock
（1）Inside To Outside is gradually reduced.
A kind of 3. plug for pressure steel pipe of hydropower station grouting construction according to claim 2, it is characterised in that：It is described
Internal groove（8）Side and grout hole（7）Angle between axis is 10 ° -15 °, internal groove（8）Height be pressure steel
Pipe（1）The half of side wall.
A kind of 4. plug for pressure steel pipe of hydropower station grouting construction according to claim 2, it is characterised in that：It is described
Internal groove（8）With the plug that is in the milk（4）Between welding form watertight weld seam（5）.
A kind of 5. plug for pressure steel pipe of hydropower station grouting construction according to claim 1, it is characterised in that：It is described
Grouting plug（4）With stiffening plate outside steel pipe（2）Between be additionally provided with sealing gasket（3）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721251529.6U CN207176693U (en) | 2017-09-27 | 2017-09-27 | A kind of plug for pressure steel pipe of hydropower station grouting construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721251529.6U CN207176693U (en) | 2017-09-27 | 2017-09-27 | A kind of plug for pressure steel pipe of hydropower station grouting construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207176693U true CN207176693U (en) | 2018-04-03 |
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ID=61749339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721251529.6U Active CN207176693U (en) | 2017-09-27 | 2017-09-27 | A kind of plug for pressure steel pipe of hydropower station grouting construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207176693U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107761736A (en) * | 2017-09-27 | 2018-03-06 | 中国葛洲坝集团机械船舶有限公司 | A kind of plug and its construction method for pressure steel pipe of hydropower station grouting construction |
-
2017
- 2017-09-27 CN CN201721251529.6U patent/CN207176693U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107761736A (en) * | 2017-09-27 | 2018-03-06 | 中国葛洲坝集团机械船舶有限公司 | A kind of plug and its construction method for pressure steel pipe of hydropower station grouting construction |
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| GR01 | Patent grant |