CN102644385A - Device for blasting reinforced concrete structure by electromagnetic induction heating - Google Patents
Device for blasting reinforced concrete structure by electromagnetic induction heating Download PDFInfo
- Publication number
- CN102644385A CN102644385A CN201210100459XA CN201210100459A CN102644385A CN 102644385 A CN102644385 A CN 102644385A CN 201210100459X A CN201210100459X A CN 201210100459XA CN 201210100459 A CN201210100459 A CN 201210100459A CN 102644385 A CN102644385 A CN 102644385A
- Authority
- CN
- China
- Prior art keywords
- reinforced concrete
- concrete structure
- heart yearn
- induction heating
- electromagnetic induction
- 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.)
- Pending
Links
Images
Landscapes
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a device for blasting a reinforced concrete structure by electromagnetic induction heating. The device is characterized by comprising a variable frequency power supply, a work core and a lead, wherein the variable frequency power supply is connected with the work core by the lead. According to the device disclosed by the invention, on the basis of an electromagnetic induction heating principle, the blasting of the whole reinforced concrete structure is realized by local blasting and stability losing of a member, and the device is suitable for blasting the reinforced concrete structure, in particular to a reinforced concrete slim member. The device disclosed by the invention has the advantages of simple structure, safety, reliability, low comprehensive cost, environment friendliness, favorable real-time control property, high construction speed and the like. According to the device, the defects in a traditional blasting technology are made up, a new path for developing the reinforced concrete structure is provided and huge practical value and social benefit are obtained.
Description
Technical field
The present invention relates to a kind of reinforced concrete structure demolition set, particularly a kind of device that adopts electromagnetic induction heating explosion reinforced concrete structure.
Background technology
Reinforced concrete structure is widely used in fields such as industrial and agricultural production and life, and it is the main composition element of whole modern architecture.Yet the part reinforced concrete building is because of the needs of urban development planning or can not satisfy required purposes and need remove, and the reinforced concrete frame structure system proportion is bigger.The tradition dismounting mode of reinforced concrete frame structure is mainly from the top to machinery (manual work) down and removes and employing explosion bottom layer of the reinforcing steel concrete column waits and removes whole building.Wherein, demolition blasting (like explosive blasting, mechanical explosion and voiceless demolition etc.) is current the most frequently used dismounting mode; But still there is certain limitation in these dismounting modes, and are high and time-consuming like big, the required expense of labour intensity of machinery or artificial dismounting mode, also face danger such as work high above the ground; The aspects such as transportation, storage and use that blasting method often faces explosive (detonator etc.) are dangerous, occur problem regular meeting such as blown-out shot during use and jeopardize constructor's personal safety; The voiceless demolition mode often faces demolition effect and is subject to factor affecting such as addressing, boring, placement and sealing, and the agent of inappropriate use voiceless demolition can not produce a desired effect.Because above-mentioned various measure is not enough, satisfy the needs that reinforced concrete structure is removed so be necessary to develop the better and safe and reliable blasting method of a kind of effect.
Summary of the invention
For the various harm that the deficiency that solves the existing blasting method self of reinforced concrete structure is brought, the invention provides a kind of device of electromagnetic induction heating explosion reinforced concrete structure.
For realizing above-mentioned technical purpose, technical scheme of the present invention is, a kind of device of electromagnetic induction heating explosion reinforced concrete structure comprises, variable-frequency power sources, work heart yearn and lead, and variable-frequency power sources is through lead connection work heart yearn.During construction with described work heart yearn helical form on reinforced concrete structure, connect variable-frequency power sources, through suitable adjustment power frequency and power, can carry out explosion to reinforced concrete structure.Electromagnetic inductive heating principle (eddy current heating principle) is widely used in the industry metallurgy field because of having advantages such as efficient and environmental protection; Operating principle of the present invention also is based on electromagnetic inductive heating principle (eddy current heating principle); When connecting variable-frequency power sources, the alternating current in the work heart yearn can produce alternating electromagnetic field around it, induce reinforcing bar inside inductive loop to occur; Eddy current can cause generating in the reinforcing bar great amount of heat; Reinforcing bar has the characteristic of low pass high resistant to alternating electromagnetic field, and the frequency of electric current and intensity are big more, and the eddy current heating effect in the reinforcing bar is remarkable more---and the heat of generation is many more; Reinforcing bar takes place softening or fusing because of the moment intensification, thus the forfeiture bearing capacity; Simultaneously, the high temperature of reinforcing bar also can cause the hydrated product in the concrete to decompose, and makes concrete efflorescence, collapse and loses bearing capacity; In addition; The steam that the hydrated product decomposition is generated in the concrete is also because of can't in time discharging concrete; In the concrete inner pore, assemble and the formation higher-pressure region; When steam when weak part spreads, the transfer of high steam can cause stress raisers in the concrete, thus the collapse of accelerate concrete structure.This eddy current heating effect only acts on the member district that the work heart yearn is centered on, and local explosion and unstability through member realize whole reinforced concrete structure explosion.Be applicable to the explosion reinforced concrete structure; Be particularly suitable for the thin member of length in the reinforced concrete structure; Have efficient, environmental protection, safe and reliable, cost performance is low and advantage such as real-time explosion; Remedied the deficiency of traditional blasting method,, had great practical value and social benefit for the reinforced concrete structure explosion provides new way.
The present invention is that also described variable-frequency power sources is distribution transformer, intermediate frequency generator, SCR inverter or the high power valve oscillator that the alternating current of different frequency and intensity is provided.Its effect is according to engineering demand corresponding frequencies and strong and weak alternating current to be provided, and it is the electric power system of whole demolition set.
The present invention is that also described lead is that the good conductive material boundling of silk, line and the fiber-like of the Dan Shu and the multi beam copper that have the rubber that insulate, aluminium class forms, and is used to connect variable-frequency power sources and work heart yearn, plays to connect and the long distance power transmission effect.
The present invention is that also described work heart yearn is formed by the good conductive material boundling of silk, line and the fiber-like of Dan Shu and multi beam copper, aluminium class, and its surface adopts high-temperature insulation material to carry out insulation processing, and has certain pliability.During enforcement; The work heart yearn can single or multiple lift form interval helical form be wound in the reinforced concrete member partial zones; If adopt the winding direction that multilayer form twines the heart yearn of then working should be able to guarantee that sense of current is in the same way in it---the electromagnetic field of avoiding the work heart yearn to produce is cancelled out each other, and reaches the stronger alternating electromagnetic field of generation and induces reinforcing bar to produce the eddy current heating; In addition, accidents such as electric leakage and short circuit do not appear in its surperficial insulation processing in the time of should be able to fully guaranteeing to implement, to guarantee to implement reliability service.
The present invention is that also described work heart yearn is that single or multiple lift form of screw shape closely is wound in the reinforced concrete member partial zones.
The present invention is that also the work heart yearn adopts multilayer form to twine, and the winding direction of multiple benches heart yearn in the same way
The present invention is that also described work heart yearn adopts multilayer form to twine, the winding direction of the heart yearn of then working in the same way and can not be intersected with each other, in order to avoid cause the alternating electromagnetism field intensity to cancel out each other.
The present invention is that also lead is that the good conductive material of fiber-like forms with the single bundle that has insulation rubber or the silk or the line boundling of multi beam copper or aluminium class, is used to connect variable-frequency power sources and work heart yearn
The invention has the beneficial effects as follows:
1, employing the present invention is based on electromagnetic inductive heating principle, can be through the frequency and the explosion of strong and weak realization reinforced concrete structure of regulating alternating current, for the explosion reinforced concrete structure provides new way.
2, simple structure of the present invention, easy to operate has advantages such as thermal conversion efficiency height, safe and reliable, environmental protection, controllability and real-time be good, has remedied the deficiency of traditional blasting method.
3, the present invention also has good universality and stability, receives external environment factor (like precipitation and wind etc.) influence little.
Description of drawings
Fig. 1 is the structural representation of the device of electromagnetic induction heating explosion reinforced concrete structure;
Fig. 2 is applied to the enforcement figure of reinforced concrete structure for the device of electromagnetic induction heating explosion reinforced concrete structure;
Wherein 1 is variable-frequency power sources, and 2 is lead, and 3 are the work heart yearn, and 4 are reinforced concrete structure (reinforced concrete structure comprises the isometric thin member of post, stake, pier or beam).
The specific embodiment
Following embodiment is to the further specifying of technology contents of the present invention, but is not the restriction to flesh and blood of the present invention.
Technical scheme of the present invention is, a kind of device of electromagnetic induction heating explosion reinforced concrete structure is characterized in that, comprises variable-frequency power sources 1, work heart yearn 3 and lead 2, and variable-frequency power sources 1 connects work heart yearns 3 through lead 2.
The present invention is that also described variable-frequency power sources 1 is distribution transformer, intermediate frequency generator, SCR inverter or the high power valve oscillator that the alternating current of different frequency and intensity is provided.
The present invention is that also described work heart yearn 3 is formed by the good conductive material boundling of silk, line and the fiber-like of Dan Shu and multi beam copper, aluminium class, and its surface adopts high-temperature insulation material to carry out insulation processing, and has certain pliability.
The present invention is that also described work heart yearn 3 closely is wound in reinforced concrete member 4 partial zones for single or multiple lift form of screw shape.
The present invention is that also described work heart yearn 3 adopts multilayer form to twine, and the winding direction of multiple benches heart yearn 3 in the same way.
The present invention is that also described work heart yearn 3 multi-lay winding do not intersect each other.
The present invention is that also described lead 2 is that the good conductive material of fiber-like forms with the single bundle that has insulation rubber or the silk or the line boundling of multi beam copper or aluminium class, is used to connect variable-frequency power sources 1 and work heart yearn 3.
Fig. 1 is the structural representation of the device of electromagnetic induction heating explosion reinforced concrete structure; The device of electromagnetic induction heating explosion reinforced concrete structure as shown in Figure 1 comprises variable-frequency power sources 1, lead 2 and work heart yearn 3, and variable-frequency power sources 1 connects work heart yearn 3 through lead 2.Described variable-frequency power sources 1 is the electric power system of whole device, and its effect is corresponding frequencies and strong and weak alternating current to be provided according to engineering demand; Described lead 2 is that the good conductive material boundling of silk, line and the fiber-like of the Dan Shu and the multi beam copper that have the rubber that insulate, aluminium class forms, and is used to connect variable-frequency power sources 1 and work heart yearn 3, plays to connect and the long distance power transmission effect; Described work heart yearn 3 is formed with line, silk or fibers form boundling by the good conductive material of Dan Shu and multi beam copper, aluminium class, and insulation processing is carried out through high-temperature insulation materials in work heart yearn 3 surfaces.Operating principle of the present invention is based on electromagnetic inductive heating principle (eddy current heating principle); During enforcement with described work heart yearn 3 at certain intervals apart from helical form on reinforced concrete structure; Link to each other with variable-frequency power sources 1 through lead 2; When connecting variable-frequency power sources 1; The alternating current of transitions can produce alternating electromagnetic field in the work heart yearn 3, and the reinforcing bars in the reinforced concrete structure (the isometric thin member of post, stake, pier or beam) 4 the eddy current heating effect occurs because of cutting the alternation magnetic line of force, generates a large amount of heat and can make reinforcing bar be softened because of moment or melt to lose bearing capacity; In addition, high temperature also can cause concrete to decompose efflorescence, collapse because of its hydrated product, thereby realizes the reinforced concrete structure explosion.Fig. 2 is applied to the enforcement figure of reinforced concrete structure for the device of electromagnetic induction heating explosion reinforced concrete structure; As shown in Figure 2; Work heart yearn 3 helical forms are surrounded on the reinforced concrete structure 4; Work heart yearn 3 can closely be surrounded on the reinforced concrete structure 4 around the helical form that also can keep at a certain distance away during enforcement, and it twines the position locates to be advisable with the middle part or the least favorable stressed (moment of flexure) of member especially.The present invention can control the alternating current in the work heart yearn 3 through handing over frequency power 1, realizes the existence and the disappearance of alternating electromagnetic field, reaches the purpose of explosion reinforced concrete structure 4.Reinforced concrete structure 4 can be the isometric thin member of post, stake, pier or beam.
Claims (7)
1. the device of an electromagnetic induction heating explosion reinforced concrete structure is characterized in that, comprises variable-frequency power sources, work heart yearn and lead, and variable-frequency power sources is through lead connection work heart yearn.
2. the device of a kind of electromagnetic induction heating explosion reinforced concrete structure according to claim 1; It is characterized in that described variable-frequency power sources is distribution transformer, intermediate frequency generator, SCR inverter or the high power valve oscillator that the alternating current of different frequency and intensity is provided.
3. the device of a kind of electromagnetic induction heating explosion reinforced concrete structure according to claim 1; It is characterized in that; Described work heart yearn is formed by the silk of Dan Shu and multi beam copper or aluminium class or the good conductive material boundling of line and fiber-like; Its surface adopts high-temperature insulation material to carry out insulation processing, and has certain pliability.
4. the device of a kind of electromagnetic induction heating explosion reinforced concrete structure according to claim 1 is characterized in that, described work heart yearn is that single or multiple lift form of screw shape closely is wound in the reinforced concrete member partial zones.
5. the device of a kind of electromagnetic induction heating explosion reinforced concrete structure according to claim 4 is characterized in that, described work heart yearn adopts multilayer form to twine, and the winding direction of multiple benches heart yearn in the same way.
6. the device of a kind of electromagnetic induction heating explosion reinforced concrete structure according to claim 5 is characterized in that, described work heart yearn multi-lay winding is not intersected each other.
7. the device of a kind of electromagnetic induction heating explosion reinforced concrete structure according to claim 1; It is characterized in that; Described lead is that the good conductive material of fiber-like forms with the single bundle that has insulation rubber or the silk or the line boundling of multi beam copper or aluminium class, is used to connect variable-frequency power sources and work heart yearn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210100459XA CN102644385A (en) | 2012-04-10 | 2012-04-10 | Device for blasting reinforced concrete structure by electromagnetic induction heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210100459XA CN102644385A (en) | 2012-04-10 | 2012-04-10 | Device for blasting reinforced concrete structure by electromagnetic induction heating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102644385A true CN102644385A (en) | 2012-08-22 |
Family
ID=46657442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210100459XA Pending CN102644385A (en) | 2012-04-10 | 2012-04-10 | Device for blasting reinforced concrete structure by electromagnetic induction heating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102644385A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839610A (en) * | 2012-09-17 | 2012-12-26 | 贵州新联爆破工程有限公司 | Demolition blasting method for prestress concrete cantilever trussed arch bridge |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050424A (en) * | 1989-09-21 | 1991-04-03 | 杨森 | Method for softening and breaking concrete |
| JP2761958B2 (en) * | 1990-01-27 | 1998-06-04 | 前田建設工業株式会社 | Demolition method of concrete structure by electromagnetic induction heating |
| CN1222619A (en) * | 1998-01-08 | 1999-07-14 | 殷剑明 | High-temperature pyrolysis method for dismantling concrete building |
| CN202544425U (en) * | 2012-04-10 | 2012-11-21 | 中南大学 | Device for blasting reinforced concrete structure through electromagnetic induction heating |
-
2012
- 2012-04-10 CN CN201210100459XA patent/CN102644385A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050424A (en) * | 1989-09-21 | 1991-04-03 | 杨森 | Method for softening and breaking concrete |
| JP2761958B2 (en) * | 1990-01-27 | 1998-06-04 | 前田建設工業株式会社 | Demolition method of concrete structure by electromagnetic induction heating |
| CN1222619A (en) * | 1998-01-08 | 1999-07-14 | 殷剑明 | High-temperature pyrolysis method for dismantling concrete building |
| CN202544425U (en) * | 2012-04-10 | 2012-11-21 | 中南大学 | Device for blasting reinforced concrete structure through electromagnetic induction heating |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839610A (en) * | 2012-09-17 | 2012-12-26 | 贵州新联爆破工程有限公司 | Demolition blasting method for prestress concrete cantilever trussed arch bridge |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102642244A (en) | Reinforced concrete structure curing device in low-temperature environment | |
| CN104822189B (en) | Conduit-type high-frequency electric heater unit, heating device, and heating method | |
| CN106633878B (en) | 200 grades of insulating lacquer layers | |
| CN202544425U (en) | Device for blasting reinforced concrete structure through electromagnetic induction heating | |
| CN102644385A (en) | Device for blasting reinforced concrete structure by electromagnetic induction heating | |
| CN101383220B (en) | Dry magnet controlled reactor | |
| CN101291091B (en) | Electromagnetic internal heating type hot cover process for water-wheel generator rotor support | |
| CN201116734Y (en) | Petrochemical industry device heating furnace dew point corrosion resisting composite lining | |
| CN210316187U (en) | Prefabricated slab with weight reduction component applied to prefabricated building | |
| CN208183560U (en) | A kind of structure construction of prestressing force Shear Strengthening box beam | |
| CN217051364U (en) | Hoisting device for power generation | |
| CN205261038U (en) | Prevent vortex combined material wall bushing flange piece | |
| CN105405612A (en) | Transformer for high-voltage output | |
| CN214279763U (en) | Axial double-split single-phase dry-type transformer | |
| CN103031959A (en) | Insulating and binding method for stainless steel reinforcing steel bars at anti-magnetic area | |
| CN204229971U (en) | The buried energy-economic transformer of a kind of solid-state water proof type in double containment storehouse | |
| CN204574787U (en) | A kind of safe heat insulation type intermediate frequency furnace | |
| CN206697887U (en) | A kind of wall bushing connecting node | |
| CN207563367U (en) | Portable steel pipe 3PE stripping machines | |
| RU2522097C2 (en) | Concrete heating method, electric heater for implementation of method, inductive heating element of electric heater and method for heating element manufacturing | |
| CN2429290Y (en) | Electromagnet pump style single-double spike generator for liquid metal brazing | |
| CN206100510U (en) | Carbon fiber heating cables | |
| CN205590747U (en) | Electric heating furnace | |
| CN214699730U (en) | Heating device penetrates in variable frequency pipeline | |
| Patil et al. | A Critical review on different coil configurations used for induction heating system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120822 |