CN203284783U

CN203284783U - High-pressure grouting plug

Info

Publication number: CN203284783U
Application number: CN2013203544959U
Authority: CN
Inventors: 林建兴
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-06-20
Filing date: 2013-06-20
Publication date: 2013-11-13
Anticipated expiration: 2023-06-20

Abstract

The utility model discloses a high-pressure grouting plug. The high-pressure grouting plug comprises an outer pipe. A hold-down nut is fixed at one end of the outer pipe. An augmentation nut and a force transmission bearing are arranged at the other end of the outer pipe. The outer pipe is also sleeved with a plurality of circular tube-shaped rubber ball plugs which are spaced through force transmission supports arranged on the outer pipe. Another force transmission support is arranged between the force transmission bearing and one of the circular tube-shaped rubber ball plugs. The high-pressure grouting plug further comprises an inner pipe, a three-way joint and a slurry inlet pipe head. The inner pipe penetrates through the outer pipe, wherein one end of the inner pipe extends out of the outer pipe, and the other end of the inner pipe is communicated with the slurry inlet pipe head. A slurry returning channel is formed between the inner pipe and the outer pipe. One end of the three-way joint is communicated with the slurry returning channel, and the other end of the three-way joint is plugged by the slurry inlet pipe head communicated with the inner pipe. The high-pressure grouting plug is simple in structure, quick and convenient to operate, durable, good in plugging effect, safe to operate, and capable of effectively reducing occurrences of drilling accidents, thereby ensuring grouting quality, improving work efficiency and lowering construction cost.

Description

A kind of high pressure grouting plug

Technical field

The utility model relates to a kind of high pressure grouting plug.

Background technology

After the nineties in 20th century, China's water resources and hydropower construction is in the peak developing stage, big and small power station is undertaken the construction of in succession, based process, the construction technology of especially grouting aspect (comprising consolidation grouting, curtain grouting, backfill grouting, anchor cable grouting etc.), technique, equipment facility etc. have obtained unprecedented development, and packer is exactly one of them.Geological condition quality in grouting works has a significant impact the grouting equipment special especially applicability of packer, and whether its embodiments can be used aborning on a large scale, cost performance height, use durability etc.For example the left bank of Jinping Hydropower Station I foundation treatment engineering is the foundation treatment engineering mark of China's maximum, the well cementing amount surpasses 100 myriametres, and engineering geological conditions complex, engineering quantity is large, microhabitat, can the duration anxiety be the distinguishing feature of this project, seek, improve or design quick, convenient, spry and light, durable packer and be to be related to the problem that can this project grouting quality and grouting efficiency improve.

The utility model content

In view of above-mentioned weak point, it is a kind of simple in structure, easy to use that the purpose of this utility model is to provide, and durability is good, and plugging effect is good, and handling safety can improve construction efficiency, reduces the high pressure grouting plug of construction cost.

In order to achieve the above object, the utility model adopts to following technical scheme:

A kind of high pressure grouting plug, comprise an outer tube, and described outer tube one end is fixed with hold-down nut, and the other end is provided with afterburning nut and power transmission bearing; Also overlap several tubular glueballs plugs are arranged on described outer tube, and tubular glueballs plug is spaced apart by the force transfer bracket that is arranged on outer tube; Also be provided with force transfer bracket between described power transmission bearing and tubular glueballs plug;

Also comprise an inner tube, a threeway and an inlet pipe head, described inner tube runs through outer tube and an end stretches out outer tube, and the other end is connected with the inlet pipe head; Form the overfall passage between described inner tube and outer tube; Described threeway one end and overfall channel connection, the inlet pipe head shutoff that the other end is connected with inner tube.

Further,, for stressed even, be provided with the extruding balance plate between described force transfer bracket and tubular glueballs plug.

Same,, for stressed even, also be provided with the extruding balance plate between described hold-down nut and tubular glueballs plug.

While using the utility model high pressure grouting to fill in row grouting or setting-out, first the high pressure grouting plug is put in aperture, namely be positioned on basement rock and concrete contact zones, by the afterburning nut of precession, and then promote force transfer bracket, extruding balance plate, dynamic balance acted on (extruding) tubular glueballs plug, tubular glueballs plug is compressed at central axis direction, and the axial compression of tubular glueballs plug generation diminishes under the equilibrium-limited of extruding balance plate, the even amplification that footpath makes progress, thus make tubular glueballs plug and hole wall close contact play the effect of blind hole.

The closure principle of the utility model and conventional gas, hydraulic pressure plug is basic identical, and water or slurries under the effect of high-pressure pump, enter inner tube through the inlet pipe head, at the bottom of arriving hole again, then water or slurries are returned with it by hole, enter threeway through the overfall passage and return to grout groove, complete a grouting or setting-out circulation.In water or slurries enter the process of threeway, the inlet pipe head shutoff that the other end of threeway is connected with inner tube, Gu Shui and slurries can only be discharged by the pulp returning port in threeway.

The beneficial effects of the utility model are: the utility model is simple in structure, and is swift and convenient to operate, and durability is good, and plugging effect is good, and handling safety can effectively reduce the generation of drilling accident, guarantees grouting quality, improves work efficiency, reduces construction cost.The force transfer bracket that arranges between tubular glueballs plug is stressed and power transmission is even, has played the friction length that increases tubular glueballs plug, prevents the dead effect of tubular glueballs fork clip.The setting of same extruding balance plate also can allow tubular glueballs plug stressed evenly.

Description of drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is sectional structure schematic diagram of the present utility model.

Fig. 3 is tubular glueballs plug structure schematic diagram.

Fig. 4 is the force transfer bracket structural representation.

Fig. 5 is extruding balance plated construction schematic diagram.

Fig. 6 is force transmission shaft bearing structure schematic diagram.

Fig. 7 is afterburning nut structure schematic diagram.

Fig. 8 is the three-port structure schematic diagram.

Fig. 9 is inlet pipe header structure schematic diagram.

In figure: 1. outer tube; 2. hold-down nut; 3. afterburning nut; 4. power transmission bearing; 5. tubular glueballs plug; 6. force transfer bracket; 7. inner tube; 8. threeway; 9. inlet pipe head; 10. overfall passage; 11. extruding balance plate; 12. pulp returning port.

The specific embodiment

Below we are further described the utility model in connection with specific embodiment.

To shown in Figure 9, a kind of high pressure grouting plug, comprise an outer tube 1 in conjunction with Fig. 1, and outer tube 1 one ends are fixed with hold-down nut 2, and the other end is provided with afterburning nut 3 and power transmission bearing 4; Also overlap several (the present embodiment is four) tubular glueballs plugs 5 are arranged on outer tube 1, and tubular glueballs plug 5 is spaced apart by the force transfer bracket 6 that is arranged on outer tube 1; Also be provided with force transfer bracket 6 between power transmission bearing 4 and tubular glueballs plug 5; The high pressure grouting plug also comprises an inner tube 7, a threeway 8 and an inlet pipe head 9, and inner tube 7 runs through outer tube 1 and an end stretches out outer tube 1, and the other end is connected with inlet pipe head 9; Form the overfall path 10 between inner tube 7 and outer tube 1; Threeway 8 one ends and overfall path 10 are communicated with, inlet pipe head 9 shutoff that the other end is connected with inner tube 7.

Evenly be provided with extruding balance plate 11 between force transfer bracket 6 and tubular glueballs plug 5 for stressed, also be provided with extruding balance plate 11 between hold-down nut 2 and tubular glueballs plug 5.

Using method:

First the high pressure grouting plug is put in aperture, namely be positioned on basement rock and concrete contact zones, by the afterburning nut 3 of precession, and then promote force transfer bracket 6, extruding balance plate 11, dynamic balance acted on (extruding) tubular glueballs plug 5, tubular glueballs plug 5 is compressed at central axis direction, and axial compression occurs and diminishes in tubular glueballs plug 5 simultaneously under the equilibrium-limited of extruding balance plate 11, the even amplification that footpath makes progress, thus make tubular glueballs plug 5 and hole wall close contact play the effect of blind hole.Water or slurries under the effect of high-pressure pump, enter inner tube 7 through inlet pipe head 9, then at the bottom of arriving hole, then water or slurries are returned with it by hole, enter threeway 8 through the overfall path 10 and return to grout groove, complete a grouting or setting-out circulation.In water or slurries enter the process of threeway 8, inlet pipe head 9 shutoff that the other end of threeway 8 is connected with inner tube 7, Gu Shui and slurries can only be discharged by the pulp returning port 12 in threeway 8.

We have done following test to the utility model:

(1) test position

Select 1730 layers of curtain consolidation grouting hole of holding concurrently to test.

(2) test objective and content

Test objective: whether checking the utility model can meet the construction needs of left bank of Jinping Hydropower Station I foundation treatment engineering drag body consolidation grouting, press packer to compare by test and standard machinery plug, gas-liquid, determine whether it has the characteristics such as convenient, fast, applicable, durable, possess the value of promoting the use of.

Content of the test: 1. the experimental grouting plug for different water/binder ratio slurries and water the sealing effect under maximum pressure 10MPa effect; 3. whether can effectively solve owing to occurring around causing casting accident in consent on slurries, occur whether this type of accident can fast solve (easily taking out); 4. packer Efficiency Statistics.

(3) problem of test result and existence

The test that reaches 2 months by the fixed hole of holding concurrently at 1730 layers of curtain is followed the tracks of, and the utility model is compared light with the standard machinery plug, easily operation, hole appears thus probability reduced 60%, hole appears thus after easilier take out in hole; The sealing effect of packer in relatively complete rock mass is better, can meet maximum pressure 10MPa grouting needs; Effect maximum after test is the packer that the unit constructor more is ready to use the type.

Claims

1. high pressure grouting plug is characterized in that:

Comprise an outer tube (1),

Described outer tube (1) one end is fixed with hold-down nut (2), and the other end is provided with afterburning nut (3) and power transmission bearing (4); Also overlap several tubular glueballs plugs (5) are arranged on described outer tube (1), and tubular glueballs plug (5) is spaced apart by the force transfer bracket (6) that is arranged on outer tube (1); Also be provided with force transfer bracket (6) between described power transmission bearing (4) and tubular glueballs plug (5);

Also comprise an inner tube (7), a threeway (8) and an inlet pipe head (9),

Described inner tube (7) runs through outer tube (1) and an end stretches out outer tube (1), and the other end is connected with inlet pipe head (9); Form overfall passage (10) between described inner tube (7) and outer tube (1); Described threeway (8) one ends and overfall passage (10) are communicated with, inlet pipe head (9) shutoff that the other end is connected with inner tube (7).

2. high pressure grouting plug according to claim 1, is characterized in that: be provided with extruding balance plate (11) between described force transfer bracket (6) and tubular glueballs plug (5).

3. high pressure grouting plug according to claim 1, is characterized in that: also be provided with extruding balance plate (11) between described hold-down nut (2) and tubular glueballs plug (5).