CN201826334U - Air bubble curtain device - Google Patents
Air bubble curtain device Download PDFInfo
- Publication number
- CN201826334U CN201826334U CN2010205651237U CN201020565123U CN201826334U CN 201826334 U CN201826334 U CN 201826334U CN 2010205651237 U CN2010205651237 U CN 2010205651237U CN 201020565123 U CN201020565123 U CN 201020565123U CN 201826334 U CN201826334 U CN 201826334U
- Authority
- CN
- China
- Prior art keywords
- curtain device
- transmitting tube
- air bubble
- heavy curtain
- bubble curtain
- 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 - Fee Related
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Abstract
The utility model provides an air bubble curtain device and relates to the field of hydraulic blasting. The air bubble curtain device comprises an air compressor, and a transmitting tube is installed on a suspension device, communicated with the air compressor and provided with a plurality of transmitting holes. The air bubble curtain device forms an air bubble curtain by suspending the transmitting tube in water with certain depth outside a cofferdam and blowing high pressure air; and proved by tests, the peak clipping rate of blasting surge waves ranges from 42.9 percent to 97.3 percent, and the air bubble curtain device can effectively protect various built hydraulic structures and important facilities near a blast area during the demolition blasting of a concrete cofferdam.
Description
Technical field
The utility model relates to water conservancy project explosion field, especially for a kind of Bubble Heavy Curtain device in the concrete cofferdam demolition blasting.
Background technology
The cofferdam demolition explosion belongs to the temporary building demolition blasting in the construction of hydropower facilities engineering, is mainly used in Diversion Tunnel and imports and exports the dismounting that cofferdam, diversion canal water inlet cofferdam, foundation ditch upstream and downstream laterally reach longitudinal cofferdam etc.The cofferdam demolition blast working belongs to the category of explosion near water, generally is to make full use of its end face, non-face near water and bored quick-fried operation by no pools such as the inner gallerys of quick-fried body.Explosion requires once quick-fried logical moulding, can satisfy sluicing, water inlet requirement, simultaneously, various hydraulic structures that built up and critical facility is arranged near the blast area, must guarantee that at first they are without prejudice when implementing explosion.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of Bubble Heavy Curtain device, can be when the concrete cofferdam demolition blasting, and protection has various hydraulic structures that built up and critical facility near the blast area.
For solving the problems of the technologies described above, the technical scheme that the utility model adopted is: a kind of Bubble Heavy Curtain device, comprise air compressor machine, and transmitting tube is installed on the suspension arrangement, and described transmitting tube is communicated with air compressor machine, and transmitting tube is provided with a plurality of launch holes.
Described launch hole on transmitting tube, become two row interlaced arrangement, two row transmitting tubes on circumference at a distance of angle be α.
Described angle α is 90 °.
Described launch hole aperture is 1-1.5mm.
In every row's launch hole, the spacing between the launch hole is 100mm.
Described suspension arrangement middle pulley is installed on the fixed mount, and the wire rope of hoist engine is walked around pulley and is connected with the transmitting tube support, and the transmitting tube support is provided with balancing weight.
A kind of Bubble Heavy Curtain device that the utility model provides; by transmitting tube being suspended on certain depth of water place outside the weir; pass to gases at high pressure then; form Bubble Heavy Curtain; after tested for the peak clipping rate of explosion surge wave between 42.9%～97.3%; can be when the concrete cofferdam demolition blasting, various hydraulic structures that built up and critical facility are arranged near effectively protecting the blast area.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples:
Fig. 1 is the structural representation of suspension arrangement in the utility model.
Fig. 2 is the structural representation of transmitting tube in the utility model.
Fig. 3 is the cross sectional representation of transmitting tube in the utility model.
The specific embodiment
In Fig. 1-Fig. 3, a kind of Bubble Heavy Curtain device comprises air compressor machine 2, transmitting tube 7 is installed on the suspension arrangement, described suspension arrangement middle pulley 4 is installed on the fixed mount 8, and the wire rope of hoist engine 3 is walked around pulley 4 and is connected with transmitting tube support 5, and transmitting tube support 5 is provided with balancing weight 1.Described transmitting tube 7 is communicated with air compressor machine 2, and transmitting tube 7 is provided with a plurality of launch holes 6.Described launch hole 6 on transmitting tube 7, become two row interlaced arrangement, two row transmitting tubes 7 on circumference at a distance of angle be α.
Described angle α is 90 °.
Described launch hole 6 apertures are 1-1.5mm.The scheme of optimizing is aperture 1mm.
In every row's launch hole 6, the spacing between the launch hole 6 is 100mm.
Test according to the Bubble Heavy Curtain that the design arrangement mode requires to carry out the 40m and the 75m depth of water respectively, it is as follows to draw conclusion (of pressure testing):
1, adopt Bubble Heavy Curtain can make surge wave pressure decay 39%～52%.
2, adopt 1mm diameter transmitting tube can satisfy the Bubble Heavy Curtain requirement.
3, the 40 m depth of waters adopt 0.6MPa with upward pressure, and the level interval between the launch hole 6 is 50mm, and every meter (double) uses air quantity 0.7m3/min.
4, the 75 m depth of waters adopt 1 MPa with upward pressure, and every meter (double) uses air quantity 1.4 m
3/ min.
15 min start all air compressor machines and form Bubble Heavy Curtain before explosion.The layout measuring point is monitored before and after curtain, monitoring result shows: the maximum peak pressure of each measuring point is general all in 0.4 MPa, have only the maximum peak pressure of vertical II-1 measuring point after the monolith Bubble Heavy Curtain of certain slightly to surpass 0.4 MPa, reach 0.419 MPa, the peak clipping rate is between 42.9%～97.3%.Result of the test shows that Bubble Heavy Curtain has played obvious effect, and carrying out initiatively to the building that needs protection, protection is feasible.
Claims (6)
1. a Bubble Heavy Curtain device comprises air compressor machine (2), it is characterized in that: transmitting tube (7) is installed on the suspension arrangement, and described transmitting tube (7) is communicated with air compressor machine (2), and transmitting tube (7) is provided with a plurality of launch holes (6).
2. a kind of Bubble Heavy Curtain device according to claim 1 is characterized in that: described launch hole (6) on transmitting tube (7), become two row interlaced arrangement, two row transmitting tubes (7) on circumference at a distance of angle be α.
3. a kind of Bubble Heavy Curtain device according to claim 2 is characterized in that: described angle α is 90 °.
4. a kind of Bubble Heavy Curtain device according to claim 2 is characterized in that: described launch hole (6) aperture is 1-1.5mm.
5. a kind of Bubble Heavy Curtain device according to claim 2 is characterized in that: in every row's launch hole (6), the spacing between the launch hole (6) is 100mm.
6. a kind of Bubble Heavy Curtain device according to claim 1, it is characterized in that: described suspension arrangement middle pulley (4) is installed on the fixed mount (8), the wire rope of hoist engine (3) is walked around pulley (4) and is connected with transmitting tube support (5), and transmitting tube support (5) is provided with balancing weight (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205651237U CN201826334U (en) | 2010-10-18 | 2010-10-18 | Air bubble curtain device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205651237U CN201826334U (en) | 2010-10-18 | 2010-10-18 | Air bubble curtain device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201826334U true CN201826334U (en) | 2011-05-11 |
Family
ID=43964881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205651237U Expired - Fee Related CN201826334U (en) | 2010-10-18 | 2010-10-18 | Air bubble curtain device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201826334U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2677082A1 (en) * | 2012-06-21 | 2013-12-25 | Cay Grunau Hydrotechnik Ingenieurbüro Grunau e.K. | Bubble curtain generating device |
| CN107764146A (en) * | 2017-11-14 | 2018-03-06 | 武汉科技大学 | For obstructing the Bubble Heavy Curtain generating means and its application method of Blasting in deep water shock wave |
-
2010
- 2010-10-18 CN CN2010205651237U patent/CN201826334U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2677082A1 (en) * | 2012-06-21 | 2013-12-25 | Cay Grunau Hydrotechnik Ingenieurbüro Grunau e.K. | Bubble curtain generating device |
| CN107764146A (en) * | 2017-11-14 | 2018-03-06 | 武汉科技大学 | For obstructing the Bubble Heavy Curtain generating means and its application method of Blasting in deep water shock wave |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110511 Termination date: 20161018 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |