CN201106727Y - Thread protective cover for penstock grouting borehole reinforcement plate - Google Patents
Thread protective cover for penstock grouting borehole reinforcement plate Download PDFInfo
- Publication number
- CN201106727Y CN201106727Y CNU2007200819070U CN200720081907U CN201106727Y CN 201106727 Y CN201106727 Y CN 201106727Y CN U2007200819070 U CNU2007200819070 U CN U2007200819070U CN 200720081907 U CN200720081907 U CN 200720081907U CN 201106727 Y CN201106727 Y CN 201106727Y
- Authority
- CN
- China
- Prior art keywords
- thread
- stiffening plate
- penstock
- plug
- grout hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model belongs to a pressure steel tube in a hydropower station, in particular relates to a thread protection sleeve of a reinforced plate of a grout hole of the pressure steel tube. The protection sleeve comprises a circular tube, wherein, one end of the circular tube is provided with an outer thread and the outer diameter of one end provided with the outer thread is appreciably smaller than the outer diameter of the other end of the circular tube. A tube thread on the reinforced plate is protected effectively during the construction, the proper spiral connection of a plug and the tube thread on the reinforced plate is ensured, and the seal-welding quality between the plug of the grout hole and the wall of the pressure steel tube is ensured when the plug is welded.
Description
Technical field
The utility model belongs to the hydropower station pressure steel pipe, particularly penstock grout hole stiffening plate protecting sleeve for thread.
Background technique
In Hydraulic and Hydro-Power Engineering is built, often carry out surface grouting and rockfill grouting by the grout hole that is provided with on the penstock tube wall, be to guarantee outside concrete density and prevent the necessary ways that the steel pipe external water pressure is excessive, generally many these designs of employing when pipeline is longer.Usually reserve grout hole on tube wall, the stiffening plate in a band of outside lap welding pipe thread hole is screwed into stiffening plate with the helical thread portion on the plug after grouting finishes, and the groove between plug and tube wall is welded again.Yet civil engineering will be holed to concrete by grout hole during consolidation grouting, because the vibrations and the swing of drilling rod, the screw thread on regular meeting's destruction stiffening plate makes plug not wear.Such form of construction work has just appearred in a lot of power stations: the helical thread portion on the plug is cut away, the residue plug directly with the tube wall weldering even.1), owing to there is not the water shutoff effect of pipe thread often have such two kinds of situations to take place:, in the many places of underground water, constantly have water to emerge from grout hole, how plug soldering and sealing is not gone up yet, repeatedly cracking; 2), high-strength steel is extremely tight to preheating, insulation, the back heat request of welding, and the welding condition extreme difference during the grout hole shutoff under the situation of concrete backfill, can only be taked the measure of temporarily heating with blowtorch, often do not reach the requirement of heating of high-strength steel welding, time adds that once long cracking screw thread is destroyed, and screw portion is cut, simply just fallen, water infiltrates tube wall in making, and plug flows into unit, damages.
Summary of the invention
At above-mentioned technical problem, the purpose of this utility model provides a kind of grout hole and the stiffening plate protecting jacket that can effectively protect screw thread on the stiffening plate when holing or being in the milk by penstock.
Structure of the present utility model is: comprise a round steel pipe, be provided with outside thread at an end of round steel pipe.The outer diameter of band outside thread round steel pipe one end is slightly less than the outer diameter of the round steel pipe the other end.
In Hydraulic and Hydro-Power Engineering is built; on the tube wall of penstock, be provided with grout hole; this penstock outer wall is near the stiffening plate in the position welding band pipe thread hole of grout hole; pipe thread hole on the stiffening plate communicates with grout hole; and the diameter in the pipe thread hole of stiffening plate is slightly less than the diameter of grout hole; (need carry out holing or being in the milk) during construction by pipe thread hole on the stiffening plate; with the externally threaded end of penstock grout hole stiffening plate protecting sleeve for thread band, pass the penstock grout hole and be threaded with the pipe thread hole of stiffening plate.In this work progress, just can avoid damaging the pipe thread on the stiffening plate like this.After having constructed, penstock grout hole stiffening plate protecting sleeve for thread is screwed off, again plug is screwed on, and plug and penstock are welded.
Advantage of the present utility model: owing to before boring or grouting, earlier penstock grout hole stiffening plate protecting sleeve for thread is connected with pipe thread on the stiffening plate, thereby when boring or grouting, effectively protected the internal thread of pore on the stiffening plate.After the construction completion, because screw thread is excellent on the stiffening plate, so the screw thread of plug and good being connected of pipe thread on the stiffening plate can have been guaranteed when plug is welded, do not have outer seepage to the welding part, the soldering and sealing quality between grout hole plug and penstock wall is guaranteed; Even occurred the delayed crack of plug weld seam later on,, prevent to damage because plug and good being spirally connected of stiffening plate also can be avoided outer water to infiltrate in the pipe and drop with plug.
Description of drawings
Fig. 1 is the structural representation of penstock grout hole stiffening plate protecting sleeve for thread;
Fig. 2 is the user mode sectional view of penstock grout hole stiffening plate protecting sleeve for thread;
Fig. 3 is the penstock sectional view that screws on plug;
1 is penstock grout hole stiffening plate protecting sleeve for thread, the 1.1st among the figure, pipe, the 1.2nd, outside thread, the 2nd, penstock, the 3rd, stiffening plate, the 4th, plug.
Embodiment
Penstock grout hole stiffening plate protecting sleeve for thread as shown in Figure 1, is got the round steel pipe that an outer diameter is 55mm; with one end car is outside thread 1.2; making its outer diameter is 50mm, and the other end that outer diameter is constant is 1.1, and the parts that become are penstock grout hole stiffening plate protecting sleeve for thread 1.
As shown in Figure 2, the tube wall of the employed penstock 2 in water power plant is provided with grout hole, the diameter of grout hole is 60mm, the outer wall of this penstock 2 is near the stiffening plate 3 in the position welding band pipe thread hole of grout hole, pipe thread hole on the stiffening plate communicates with grout hole, and the diameter in the pipe thread hole on the stiffening plate is 50mm.Pipe thread hole and the grout hole on the penstock tube wall on the stiffening plate are concentric circle; during construction when concrete is holed or is in the milk (need carry out by pipe thread hole on the stiffening plate); penstock grout hole stiffening plate protecting sleeve for thread 1 is with an externally threaded end 1.2, passes the penstock grout hole and be threaded with the pipe thread hole of stiffening plate.In this work progress, just can avoid damaging the pipe thread on the stiffening plate like this.After having constructed as shown in Figure 3; penstock grout hole stiffening plate protecting sleeve for thread 1 is screwed off; because the pipe thread on the stiffening plate 3 is excellent; so the screw thread with plug 4 screws on again; just can form good spiral shell with the pipe thread on the stiffening plate and be connected, also more help the welding of plug and penstock.
Claims (2)
1, penstock grout hole stiffening plate protecting sleeve for thread is characterized in that, comprises pipe (1), and an end of pipe (1) is provided with outside thread (1.2).
2, penstock grout hole stiffening plate protecting sleeve for thread according to claim 1 is characterized in that: the outer diameter of pipe (1) band outside thread (1.2) one ends is slightly less than the outer diameter of pipe (1) the other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200819070U CN201106727Y (en) | 2007-11-13 | 2007-11-13 | Thread protective cover for penstock grouting borehole reinforcement plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200819070U CN201106727Y (en) | 2007-11-13 | 2007-11-13 | Thread protective cover for penstock grouting borehole reinforcement plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201106727Y true CN201106727Y (en) | 2008-08-27 |
Family
ID=39958531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200819070U Expired - Lifetime CN201106727Y (en) | 2007-11-13 | 2007-11-13 | Thread protective cover for penstock grouting borehole reinforcement plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201106727Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104372775A (en) * | 2014-12-05 | 2015-02-25 | 国家电网公司 | Pumped storage power station pressure steel tube slurry injection hole seal welding method and seal welding structure |
| 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 |
-
2007
- 2007-11-13 CN CNU2007200819070U patent/CN201106727Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104372775A (en) * | 2014-12-05 | 2015-02-25 | 国家电网公司 | Pumped storage power station pressure steel tube slurry injection hole seal welding method and seal welding structure |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201172828Y (en) | Well-covering device for dewatering well | |
| CN103422674B (en) | Prefabricated concrete structure Cast-in-Situ Segment concrete construction method | |
| CN201310362Y (en) | Installing device of high pressure water burst drill hole bore pipe | |
| CN201795223U (en) | Internal repair expansion device for pipeline cracking | |
| CN202039771U (en) | Long-spiral grouting and guncreting multifunctional drilling tool | |
| CN201106727Y (en) | Thread protective cover for penstock grouting borehole reinforcement plate | |
| CN203702071U (en) | Water inrush preventing drill ejecting device for water exploration and grouting construction of vertical shaft | |
| CN204491645U (en) | A kind of deep foundation pit precipitation well-sealing device | |
| CN101492917B (en) | Hollow anchor stock circulating pressure slip casting construction method and special slip casting system thereof | |
| CN203533005U (en) | Prestressed steel-concrete composite pressure jacking pipe | |
| CN200992812Y (en) | Hole grout stopping plug for chemical grouting | |
| CN205101771U (en) | Be used for prosthetic attach fitting of FRP pipe on -line interlude | |
| CN109707337B (en) | Self-traveling slurry stopping device of assembled grouting guide pipe | |
| CN208105923U (en) | A kind of existing pond increases the connecting joint structure of water string | |
| CN204703180U (en) | A kind of foundation pit dewatering well-sealing device | |
| CN102758443B (en) | Novel enclosing structure applicable to connection change between new pipes and old pipes and construction method thereof | |
| CN107761736A (en) | A kind of plug and its construction method for pressure steel pipe of hydropower station grouting construction | |
| CN207176693U (en) | A kind of plug for pressure steel pipe of hydropower station grouting construction | |
| CN204424850U (en) | Cable laying RC pipejacking | |
| CN104018475B (en) | A kind of embedded penstock backfill grouting structure and grouting process thereof | |
| CN103322414A (en) | Method for fast and safely excavating oil-gas pipeline rock section emergent repair working pit | |
| CN209923963U (en) | Anti-icing awl grouting system of major diameter single pile basis | |
| CN203441508U (en) | Special device for grouting deep hole in crushing section of surrounding rock | |
| CN206918422U (en) | A kind of Novel civil air defense engineering tubular construction through walls | |
| CN105442594A (en) | Hole reaming mud-jacking construction technology for prestress hollow square pile with built-in mud-jacking pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080827 |