CN2802703Y - Explosive cutting speed-sensitive switch - Google Patents
Explosive cutting speed-sensitive switch Download PDFInfo
- Publication number
- CN2802703Y CN2802703Y CN 200520078950 CN200520078950U CN2802703Y CN 2802703 Y CN2802703 Y CN 2802703Y CN 200520078950 CN200520078950 CN 200520078950 CN 200520078950 U CN200520078950 U CN 200520078950U CN 2802703 Y CN2802703 Y CN 2802703Y
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- China
- Prior art keywords
- groove
- explosive
- action command
- water conservancy
- conservancy diversion
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- Expired - Fee Related
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Abstract
The utility model relates to a cutting type high-speed switch for blasting, wherein an insulating board (1) is provided with a groove (3) for placing an explosive (2); the insulating board (1) overlaps a diversion row (4); an electric detonator (5) is connected between the explosive (2) and an action command interface (8). Besides, the diversion row can be provided with a fracture trough (6). All the components except for the action command interface are enclosed inside a cylinder (7). When received by the action command interface, an action command is transmitted to the electric detonator, and the electric detonator is ignited to detonate the explosive, so that a switch fracture is formed in a high speed at the position of the groove of the diversion row to switch off the current loop.
Description
Technical field
The utility model relates to a kind of explosion cutting type speed-sensitive switch, is mainly used in the path of fast shut-off short circuit current in high pressure or the low-voltage power supply loop.
Background technology
When high pressure or low-voltage power supply loop are short-circuited fault, can flow through the short circuit current of high amplitude in the circuit, avoid the damage of short circuit current for power supply units such as protection generator, transformers, use circuit breaker fast shut-off short circuit current usually.At present, the standard-sized sheet break time of circuit breaker is 100～200ms, and power supply unit is the interior impact that must tolerate short circuit current at this moment, so its design and manufacturing have been proposed very high requirement, has also improved the cost of product.Along with expanding economy, the short circuit current of electric power system further increases, and this problem is more outstanding.Therefore, the shorter novel high speed switch of research switch off time is current urgent problem.
With China's No. 200420041539.3 patents " rapid large-current spacer assembly " is example, is to make the energy with explosive, makes the weakness on the water conservancy diversion row form fracture when explosive charge, reaches the purpose of fast shut-off current channel.The main weak point of this method is: (1) is provided with the explosion groove of placement explosive, also is provided with to form weakness at the back side of explosion groove on water conservancy diversion row be the groove of purpose, it is too small to cause water conservancy diversion to come the cross-sectional flow area of weakness, form high current density region, when big electric current flows through, the temperature anomaly of this weakness raises, be difficult to satisfy request of national standard, the allowable temperature that also might surpass explosive makes its aged deterioration or mis-ignition; (2) softer usually because of water conservancy diversion row's material, process explosion groove and groove thereon simultaneously, complex process, restive machining accuracy and crudy.
The content of utility model
The technical problems to be solved in the utility model is to overcome the deficiency described in the background technology, the explosion cutting type speed-sensitive switch that provide a kind of reliable operation, is easy to process.
Technological improvement part of the present utility model is: the groove of placing explosive is set on insulation board, and insulation board and water conservancy diversion row closed assembly, electric cap is connected between explosive and the action command interface.
Further technological improvement of the present utility model is: the reverse side of water conservancy diversion row's closed assembly face, with the groove relative position on also can establish the fracture groove, insulation board, explosive, water conservancy diversion row, electric cap, groove and fracture groove all are closed in the cylindrical shell, and cylindrical shell is provided with the action command interface outward; By the action command of action command interface, from the external detection device, for example: be in earthy pulse transformer or fiber-optic signal transmission system, or arrange the measurement control appliance that is in same potential with water conservancy diversion to the electric cap transmission.
Compared with prior art; the good effect that the utility model produced is: owing to designed the groove of placing explosive on insulation board; when electric cap is fought the triggering explosive by the signal processor point; will make water conservancy diversion come groove location or the weakness between fracture groove and groove is blown; moment forms isolation fracture; current path is disconnected at a high speed, faster one more than the order of magnitude than general circuit breaker, play a protective role better.Because the groove of placing explosive is not set on water conservancy diversion row, slotless or the fracture groove only is set on water conservancy diversion row, thus can or can not reduce water conservancy diversion row's cross-sectional flow area too much, avoid local temperature to raise unusually, water conservancy diversion row's processing also becomes simple; In addition, when being used for high tension loop, action command can be from being in earthy pulse transformer or fiber optic transmission system, can avoid electromagnetic field of high frequency that overvoltage in the high tension loop and corona discharge etc. produce to measuring the interference of control appliance.For being used for different electric pressures, on insulation board and water conservancy diversion row, can distinguish and design several grooves and fracture groove at interval, the explosive in each groove links to each other by explosive rope, receives blast simultaneously behind the action command, forms single cap sensitive formula multi-break structure; Explosive in each groove connects an electric cap also can for without explosive rope links to each other the explosive difference correspondence in each groove, and each electric cap is connected respectively on each self-corresponding action command interface, forms many cap sensitives formula multi-break structure.
Description of drawings
Fig. 1: structural representation of the present utility model.
Fig. 2: the structural representation of second embodiment of the present utility model.
Fig. 3: the structural representation of the 3rd embodiment of the present utility model.
Embodiment
1. figure one represents an embodiment of the present utility model, be mainly and on insulation board 1, be provided with groove 3, be placed with explosive 2 in the groove 3, explosive 2 is connected with action command interface 8 by electric cap 5 and holding wire, also can connect an explosive rope again between electric cap 5 and explosive 2.Insulation board 1 is arranged 4 closed assemblies with the metal water conservancy diversion, and is fastening by bolt 10.The reverse side of water conservancy diversion row 4 closed assembly face, with groove 3 relative positions on can also be provided with fracture groove 6, fracture groove 6 and groove 3 parallel relative set.According to the difference of electric pressure, also can on insulation board 1 and water conservancy diversion row 4, design a plurality of grooves 3 and fracture groove 6 respectively at interval, the explosive 2 in each groove 3 links to each other by explosive rope phase 11, constitutes single cap sensitive formula multi-break structure.
Fig. 2 represents the structural representation of second embodiment of the present utility model.Link to each other without explosive rope with the explosive 2 in the difference of structure shown in Figure 1 is each groove 3, and give the corresponding respectively connection of explosive 2 in each groove 3 electric cap 5, each electric cap is connected respectively on each self-corresponding action command interface 8, forms many cap sensitives formula multi-break structure.
Fig. 3 represents the structural representation of the 3rd embodiment of the present utility model.Insulation board 1 of closed assembly between but water conservancy diversion that the fracture groove is oppositely arranged identical at two block structures arranges 4 is oppositely arranged groove 3 and explosive 2 on two closed assembly faces of insulation board 1, the explosives 2 in each groove 3 link to each other by explosive rope 12; This pair water conservancy diversion row structure can double the load current value of device.Its operation principle and course of action and shown in Figure 1 identical.
Said explosive 2 is prefabricated profiled bar shaped explosive or explosive rope or flexible linear shaped charge; Said cylindrical shell 7 is the insulating material tube.
With Fig. 1 is that example illustrates that the course of action of this device is as follows: this device is connected in the current supply circuit, makes it to become the path of current flowing.When on the action command interface 8 when action command occurring, then make it igniting to electric cap 5 transmission action commands from action instruction interface 8.Said action command is from the external detection device of the predeterminable starting value of otherwise designed, for example: be in earthy pulse transformer or fiber-optic signal transmission system, or arrange the measurement control appliance that is in same potential with water conservancy diversion.The action of electric cap 5 causes explosive 2 blasts in explosive rope 11 and the groove 3, under the high temperature and hyperbar effect of explosion time, metal water conservancy diversion row 1 in groove 3 positions or the weakness between fracture groove 6 and groove 3 cut off at a high speed, to the opposite side turnup to the final position shown in the dotted line 9, form isolation fracture, current channel is disconnected.Receive action command moves to final position 14 to fracture time interval less than 400 μ s from electric cap 6, fast about 250 times than common circuit breaker.Owing to have a plurality of fractures to be in series, so have higher fracture dielectric strength.In addition, what need particularly point out is: under normal operation, owing to too high current density can not occur at fracture groove 6 places, the maximum temperature rise at fracture groove 6 places satisfies request of national standard less than 70K.
Structure shown in Figure 2 is compared with Fig. 1, and difference is many cap sensitives: when each action command interface 8 during simultaneously to corresponding with it electric cap 5 output ignition signals, all electric caps 5 are ignited simultaneously, and cause explosives 2 blasts in each groove 3.Other course of action and shown in Figure 1 identical.
Claims (3)
1. an explosion cutting type speed-sensitive switch is characterized in that being provided with the groove (3) of placing explosive (2) on insulation board (1), insulation board (1) and water conservancy diversion row (4) closed assembly, and electric cap (5) is connected between explosive (2) and the action command interface (8).
2. the big electric current spacer assembly of high speed according to claim 1, it is characterized in that at water conservancy diversion row's (4) closed assembly face reverse side, with groove (3) relative position on also be provided with fracture groove (6).
3. the big electric current spacer assembly of high speed according to claim 1 and 2, it is characterized in that said insulation board (1), explosive (2), water conservancy diversion row (4), electric cap (5), groove (3), fracture groove (6) all are closed in the cylindrical shell (7), action command interface (8) is located at outside the cylindrical shell (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520078950 CN2802703Y (en) | 2005-06-22 | 2005-06-22 | Explosive cutting speed-sensitive switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520078950 CN2802703Y (en) | 2005-06-22 | 2005-06-22 | Explosive cutting speed-sensitive switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2802703Y true CN2802703Y (en) | 2006-08-02 |
Family
ID=36847407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520078950 Expired - Fee Related CN2802703Y (en) | 2005-06-22 | 2005-06-22 | Explosive cutting speed-sensitive switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2802703Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109641528A (en) * | 2016-11-15 | 2019-04-16 | 宝马股份公司 | Pyrotechnic switch and intermediate circuit discharge system |
-
2005
- 2005-06-22 CN CN 200520078950 patent/CN2802703Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109641528A (en) * | 2016-11-15 | 2019-04-16 | 宝马股份公司 | Pyrotechnic switch and intermediate circuit discharge system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI SUXIAN SWITCH CO., LTD. Free format text: FORMER OWNER: LANHE ELECTRIC ENGINEERING CO., LTD., SHAANXI Effective date: 20120502 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 710061 XI AN, SHAANXI PROVINCE TO: 200240 MINHANG, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120502 Address after: 200240 Shanghai city Minhang District Jianchuan Road No. 951 Building 5 floor 2 room 2002 Patentee after: Sahnghai Speed Limit Switch Co.,Ltd. Address before: 710061 Shaanxi province Xi'an Beilin District Zhang eight road No. 6 Patentee before: Lanhe Electric Engineering Co., Ltd., Shaanxi |
|
| DD01 | Delivery of document by public notice |
Addressee: Wang Sumei Document name: Notification of Passing Examination on Formalities |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060802 Termination date: 20140622 |
|
| EXPY | Termination of patent right or utility model |