CN203823346U - Plugging device for high-strength steel penstock hole - Google Patents

Plugging device for high-strength steel penstock hole Download PDF

Info

Publication number
CN203823346U
CN203823346U CN201420269255.3U CN201420269255U CN203823346U CN 203823346 U CN203823346 U CN 203823346U CN 201420269255 U CN201420269255 U CN 201420269255U CN 203823346 U CN203823346 U CN 203823346U
Authority
CN
China
Prior art keywords
penstock
hole
steel plate
circular port
preformed 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.)
Active
Application number
CN201420269255.3U
Other languages
Chinese (zh)
Inventor
詹剑霞
覃春安
汪文亮
李纪虎
刘红玉
李哲茹
温秀娟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Gezhouba Group Co Ltd
Original Assignee
China Gezhouba Group Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China Gezhouba Group Co Ltd filed Critical China Gezhouba Group Co Ltd
Priority to CN201420269255.3U priority Critical patent/CN203823346U/en
Application granted granted Critical
Publication of CN203823346U publication Critical patent/CN203823346U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model relates to a plugging device for a high-strengthen steel penstock hole. The plugging device comprises a reinforced steel plate, wherein the reinforced steel plate is fixed on the inner side of the wall of a steel penstock; a round hole is formed in the center of the reinforced steel plate; the round hole and a preformed hole formed in the pipe wall are concentric; internal threads are formed in the round hole; the diameter of the round hole is smaller than that of the preformed hole; a screw rod plug is embedded into the preformed hole and the round hole. According to the utility model, the screw rod plug is corporately used with the reinforced steel plate, so that the problem that the quality requirement can't be met by adopting the common welding padding way to block off the hole is solved, the situation that the steel penstock is damaged because of deep welding depth is avoided, and therefore, the construction quality can be improved; the plugging device is simple in structure and easy to operate and is economical and practical.

Description

A kind of high-strength steel penstock holes blocking device
Technical field
The utility model relates to a kind of blocking device, is specially a kind of high-strength steel penstock holes blocking device.
Background technique
Water power plant diversion tunnel penstock is because the hydraulic head pressure bearing is large, flow velocity is high, penstock adopts high-strength steel to make, penstock external wrapping concrete needs the concrete to building to carry out surface grouting after building, usual way is to utilize circular opening grouting reserved on penstock tube wall, the shutoff of hole later stage is difficult to meet large hydraulic head pressure and the high quality requirement that penstock bears with common welding filling mode, and the depth of weld causes damage to penstock deeply.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of high-strength steel penstock holes blocking device, can ensure high pressure steel pipe holes blocking quality, and simple in structure, easy operating, economical and practical is set.
For solving the problems of the technologies described above, the technological scheme that the utility model adopts is: a kind of high-strength steel penstock holes blocking device, comprise reinforcement steel plate, strengthen steel plate and be fixed on penstock tube wall inner side, strengthening steel plate center has circular port, and circular port is concentric with the preformed hole on tube wall, circular port car internal thread, circular port aperture is less than preformed hole, and screw mandrel plug is embedded in preformed hole and circular port.
The secondary bar external threading of screw mandrel plug front end, secondary bar tail end is fluted, and middle part mobile jib tail end is opened triangle groove, and mobile jib afterbody has rectangle square toes.
There is pad in groove outside, and pad is embedded in groove.
The high-strength steel penstock holes blocking device that the utility model provides, coordinate and strengthen steel plate use by screw mandrel plug, can solve holes blocking cannot meet quality requirement problem with common welding filling mode, and avoid the depth of weld deeply penstock to be caused the situation of damage, can improve construction quality.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is described in further detail:
Fig. 1 is schematic diagram before the shutoff of the utility model preformed hole.
Fig. 2 is the partial enlarged drawing A of Fig. 1.
Fig. 3 is the utility model screw mandrel stopper structure schematic diagram.
Fig. 4 is the utility model copper backing structural representation.
Fig. 5 is that the utility model uses schematic diagram.
Embodiment
Structure of the present utility model as Figure 1-4, a kind of high-strength steel penstock holes blocking device, comprise and strengthen steel plate 3, it is characterized in that, strengthen steel plate 3 and be fixed on penstock tube wall 1 inner side, strengthening steel plate 3 centers has circular port 4, circular port 4 is concentric with the preformed hole 2 on tube wall 1, circular port 4 car internal threads, circular port 4 apertures are less than preformed hole 2, and screw mandrel plug 5 is embedded in preformed hole 2 and circular port 4.
Secondary bar 51 external threadings of screw mandrel plug 5 front ends, secondary bar 51 tail ends are fluted 52, and mobile jib 53 tail ends in middle part are opened triangle groove, and mobile jib 53 afterbodys have rectangle square toes 54.
There is pad 6 in groove 52 outsides, and pad 6 is embedded in groove 52.
In the utility model, screw mandrel plug secondary bar 51 external threadings of 5 front ends and mutually mating with circular port 4 internal threads, it is to facilitate mobile jib 53 afterbodys and preformed hole 2 hole wall welding that mobile jib 53 tail ends are opened triangle groove, and mobile jib 53 afterbody square toes 54 are to be convenient to screw up with a wrench screw mandrel plug 5.
There is pad 6 in described groove 52 outsides, and pad 6 is embedded in groove 52.The preferred copper gasket of pad 6, copper gasket intensity is high, pliability good, is to avoid there is trickle gap between screw mandrel plug 5 and preformed hole 2, effectively stops that outside pressure water infiltrates in hole.
Described circular port 4 apertures are identical with secondary bar 51 external diameters of screw mandrel plug 5 front ends, and circular port 4 hole depths and secondary bar 51 are equal in length; Described mobile jib 53 external diameters are identical with preformed hole 2 apertures, and mobile jib 53 length equate with preformed hole 2 hole depths.
Implementation step of the present utility model is as follows: the reinforcement steel plate 3 that is welded with circular port 4 in penstock tube wall 1 inner side, circular port 4 is concentric with tube wall 1 preformed hole 2, screw mandrel plug 5 is screwed in preformed hole 2 and circular port 4, build penstock external wrapping concrete, build back-out screw mandrel plug 5 and carried out grouting construction, after grouting construction, clear up preformed hole 2 and circular port 4, again the screw mandrel plug 5 that is socketed with pad 6 screwed in preformed hole 2 and circular port 4 and tighten, by mobile jib 53 afterbodys and preformed hole 2 hole wall welding, welding sequence and weld seam meet welding standard, finally rectangle square toes 54 are cut off and polished flat.

Claims (3)

1. a high-strength steel penstock holes blocking device, comprise and strengthen steel plate (3), it is characterized in that, strengthen steel plate (3) and be fixed on penstock tube wall (1) inner side, strengthening steel plate (3) center has circular port (4), and circular port (4) is concentric with the preformed hole (2) on tube wall (1), circular port (4) car internal thread, circular port (4) aperture is less than preformed hole (2), and screw mandrel plug (5) is embedded in preformed hole (2) and circular port (4).
2. a kind of high-strength steel penstock holes blocking device according to claim 1, it is characterized in that: secondary bar (51) external threading of screw mandrel plug (5) front end, secondary bar (51) tail end fluted (52), middle part mobile jib (53) tail end is opened triangle groove, and mobile jib (53) afterbody has rectangle square toes (54).
3. a kind of high-strength steel penstock holes blocking device according to claim 2, is characterized in that: there is pad (6) in groove (52) outside, and pad (6) is embedded in groove (52).
CN201420269255.3U 2014-05-26 2014-05-26 Plugging device for high-strength steel penstock hole Active CN203823346U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420269255.3U CN203823346U (en) 2014-05-26 2014-05-26 Plugging device for high-strength steel penstock hole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420269255.3U CN203823346U (en) 2014-05-26 2014-05-26 Plugging device for high-strength steel penstock hole

Publications (1)

Publication Number Publication Date
CN203823346U true CN203823346U (en) 2014-09-10

Family

ID=51478847

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420269255.3U Active CN203823346U (en) 2014-05-26 2014-05-26 Plugging device for high-strength steel penstock hole

Country Status (1)

Country Link
CN (1) CN203823346U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105351670A (en) * 2015-11-23 2016-02-24 马玉荣 Sewer line end sealing column
CN111591391A (en) * 2020-05-20 2020-08-28 上海外高桥造船有限公司 Reinforcing device for reinforcing lower water tank sectional lower opening

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105351670A (en) * 2015-11-23 2016-02-24 马玉荣 Sewer line end sealing column
CN111591391A (en) * 2020-05-20 2020-08-28 上海外高桥造船有限公司 Reinforcing device for reinforcing lower water tank sectional lower opening

Similar Documents

Publication Publication Date Title
CN203823346U (en) Plugging device for high-strength steel penstock hole
CN203729498U (en) Vertical reinforcement-steel sleeve but joint connection structure of assembled wall
CN204185853U (en) A kind of overhead kick piecing devices connected fast for prestressed concrete pipe pile
CN204000876U (en) Resistance to distortion sleeve valve pipe
CN203961895U (en) A kind of tie back liner plug
CN204282382U (en) A kind of equipment by decompression drainage quick blocking precipitation pipe well
CN203755310U (en) Pile washing nozzle of self-elevating platform pile shoe
CN206607586U (en) A kind of self-balancing grouting under pressure steel tube for soil-nail structure
CN202914026U (en) Well cementation cement head
CN203394565U (en) Fireproof injection pipe for coal mine
CN204491618U (en) Self-plugging infiltration type slurry casting machine
CN206928526U (en) A kind of half grout sleeve of bar connecting
CN203035105U (en) Inverse slip casting casing pipe of elevation angle drill hole
CN203890980U (en) Backfilling and grouting structure for buried pressure pipe
CN104018475B (en) A kind of embedded penstock backfill grouting structure and grouting process thereof
CN204139173U (en) Major diameter high pressure duct grouting structure
CN203498833U (en) Rotary jet grouting anchor rod body device
CN203603154U (en) Liquefied mollisol flat-base pile head
CN210317333U (en) Reusable grout stopping device
CN207419484U (en) Penstock surface grouting built-in pipe arrangement
CN202901690U (en) Buried pipeline repair device
CN204040038U (en) A kind of high pressure grouting plugging head
CN202417527U (en) Jacking device for small conduit used for grouting for tunnel
CN202852267U (en) Novel double inclined pipe
CN205591631U (en) Novel fluid pressure type power supply facility promotes device

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant