CN204449596U - Plasma cutting power supply output coupling device safety protective circuit - Google Patents
Plasma cutting power supply output coupling device safety protective circuit Download PDFInfo
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- CN204449596U CN204449596U CN201520113337.3U CN201520113337U CN204449596U CN 204449596 U CN204449596 U CN 204449596U CN 201520113337 U CN201520113337 U CN 201520113337U CN 204449596 U CN204449596 U CN 204449596U
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- cutting torch
- power supply
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Abstract
The utility model discloses a kind of plasma cutting power supply output coupling device safety protective circuit, comprise: striking coil T comprises vice-side winding one and vice-side winding two, the output protection socket that one end of vice-side winding one is connected with cutting torch state detection circuit, the other end accesses plasma cutting power supply; The output coupling device that one end of vice-side winding two is connected with cutting torch state detection circuit, the other end accesses plasma cutting power supply; Described cutting torch state detection circuit is also connected with the cutting torch combined socket and switch of plasma cutting power supply.The utility model beneficial effect: ensure that when cutting torch is from when coupling device disconnects or cutting torch plug pulls up from the socket of plasma cutting power supply, the output of coupling device or plasma cutting power supply does not export higher than the voltage of safe voltage, avoids the electric shock accidents brought because of maloperation.
Description
Technical field
The utility model relates to plasma cutting system technical field, particularly a kind of plasma cutting power supply output coupling device safety protective circuit.
Background technology
Existing plasma cutting system is primarily of a few part composition of feeder, cutting power supply and cutting torch.When cutting torch disconnects from output coupling device, if maloperation cutting torch switch, plasma cutting power supply meeting output no-load voltage, now the output coupling device of plasma cutting power supply is with high pressure, very easily produce electric shock, great threat is caused to the personal safety of operating personnel.
Utility model content
The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art; a kind of plasma cutting power supply output coupling device safety protective circuit is provided; this circuit can realize when cutting torch disconnects from output coupling device; if maloperation cutting torch switch, there is not the voltage higher than safety (special low) voltage in the output coupling device of plasma cutting power supply.
For achieving the above object, the utility model adopts following technical proposals:
A kind of plasma cutting power supply output coupling device safety protective circuit, comprising: striking coil T and cutting torch state detection circuit;
Described striking coil T comprises vice-side winding one and vice-side winding two, the output protection socket that one end of described vice-side winding one is connected with cutting torch state detection circuit, the other end accesses plasma cutting power supply; The output coupling device that one end of described vice-side winding two is connected with cutting torch state detection circuit, the other end accesses plasma cutting power supply; Described cutting torch state detection circuit is also connected with the cutting torch combined socket and switch of plasma cutting power supply;
Described cutting torch state detection circuit only connects to the corresponding plug of cutting torch respectively at the cutting torch combined socket and switch of the output protection socket of plasma cutting power supply, the output coupling device of plasma cutting power supply and plasma cutting power supply; and during the output protection plug electrical short of the pneumoelectric plug of cutting torch and cutting torch, could normally work.
One end that described vice-side winding one and vice-side winding two access cutting torch state detection circuit is Same Name of Ends.
A kind of plasma cutting power supply output coupling device safety protective circuit, comprising: inductance RA and cutting torch state detection circuit;
Described inductance RA comprises winding one and winding two, the output protection socket that one end of described winding one is connected with cutting torch state detection circuit, the other end accesses plasma cutting power supply; The output coupling device that one end of described winding two is connected with cutting torch state detection circuit, the other end accesses plasma cutting power supply; Described cutting torch state detection circuit is also connected with the cutting torch combined socket and switch of plasma cutting power supply;
Described cutting torch state detection circuit only connects to the corresponding plug of cutting torch respectively at the cutting torch combined socket and switch of the output protection socket of plasma cutting power supply, the output coupling device of plasma cutting power supply and plasma cutting power supply; and during the output protection plug electrical short of the pneumoelectric plug of cutting torch and cutting torch, could normally work.
One end that described winding one and winding two access cutting torch state detection circuit is Same Name of Ends.
A kind of plasma cutting power supply output coupling device safety protective circuit, comprising: inductance RA1, inductance RA2 and cutting torch state detection circuit;
The output protection socket that one end of described inductance RA1 is connected with cutting torch state detection circuit, the other end accesses plasma cutting power supply; The output coupling device that one end of described inductance RA2 is connected with cutting torch state detection circuit, the other end accesses plasma cutting power supply; Described cutting torch state detection circuit is also connected with the cutting torch combined socket and switch of plasma cutting power supply;
Described cutting torch state detection circuit only connects to the corresponding plug of cutting torch respectively at the cutting torch combined socket and switch of the output protection socket of plasma cutting power supply, the output coupling device of plasma cutting power supply and plasma cutting power supply; and during the output protection plug electrical short of the pneumoelectric plug of cutting torch and cutting torch, could normally work.
The output coupling device of the pneumoelectric plug access plasma cutting power supply of cutting torch, the output protection socket of the output protection plug access plasma cutting power supply of cutting torch, the cutting torch combined socket and switch of the controller plug access plasma cutting power supply of cutting torch.
The pneumoelectric plug of described cutting torch and output protection plug electrical short on cutting torch of cutting torch.
The input signal of described cutting torch state detection circuit is respectively the signal that the pneumoelectric plug of cutting torch and output protection plug access the state of plasma cutting power supply respective socket and the controller plug action of cutting torch respectively; The output signal of cutting torch state detection circuit is the enabling signal of inverter;
When described cutting torch state detection circuit detects that the pneumoelectric plug of cutting torch and the output protection plug of cutting torch access the signal of the state of plasma cutting power supply respective socket and the controller plug action of cutting torch respectively simultaneously; cutting torch state detection circuit just understands the enabling signal of output inverter; otherwise; cutting torch state detection circuit can not the enabling signal of output inverter, and the output coupling device of plasma cutting power supply is not charged.
The beneficial effects of the utility model are:
If the output protection plug of the pneumoelectric plug of cutting torch and cutting torch has a respective socket not accessing plasma cutting power supply at least; cutting torch state detection circuit can't detect the normal access state of cutting torch; even if now cutting torch switch motion, the output coupling device of plasma cutting power supply is not charged.
The utility model plasma cutting power supply output coupling device safety protective circuit ensure that when cutting torch disconnects from output coupling device; if maloperation cutting torch switch; there is not the voltage higher than safety (special low) voltage in the output of plasma cutting power supply, avoids the electric shock accidents brought because of maloperation.
Accompanying drawing explanation
Fig. 1 is the utility model plasma cutting power supply output coupling device safety protective circuit structural representation one;
Fig. 2 is the utility model plasma cutting power supply output coupling device safety protective circuit structural representation two;
Fig. 3 is the utility model plasma cutting power supply output coupling device safety protective circuit structural representation three;
Fig. 4 is the connection diagram of each plug of the utility model cutting torch and plasma cutting power supply;
Fig. 5 is the utility model cutting torch state detection circuit specific embodiment structural representation;
Wherein, 1. cutting torch state detection circuit, 2-1. striking coil T; 2-2. inductance RA, 2-3. inductance RA1,2-4. inductance RA2; 3. plasma cutting power supply output protection socket, 4. plasma cutting power supply output coupling device, 5. plasma cutting power supply cutting torch combined socket and switch; 8. the output protection plug of cutting torch, 9. shorting stub, 10. the pneumoelectric plug of cutting torch; the controller plug of 11. cutting torches; 13. control detection module, 14. photoelectric isolation modules, 15. input module switches.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described further.
Embodiment one:
A kind of plasma cutting power supply output coupling device 4 safety protective circuit, as shown in Figure 1, comprising: striking coil T 2-1 and cutting torch state detection circuit 1;
Striking coil T 2-1 comprises vice-side winding one and vice-side winding two, the output protection socket that one end of vice-side winding one is connected with cutting torch state detection circuit 1, the other end accesses plasma cutting power supply; The output coupling device that one end of vice-side winding two is connected with cutting torch state detection circuit 1, the other end accesses plasma cutting power supply; Cutting torch state detection circuit 1 is also connected with the cutting torch combined socket and switch of plasma cutting power supply.Vice-side winding one and vice-side winding two access one end of cutting torch state detection circuit 1, and namely T-a end and T-c end are Same Name of Ends.
Cutting torch state detection circuit 1 comprises: cutting torch access state testing circuit and cutting torch switch motion testing circuit;
The output protection plug 8 of pneumoelectric plug 10 and cutting torch that the input signal of cutting torch access state testing circuit is respectively cutting torch accesses the state of plasma cutting power supply respective socket respectively; The input signal of cutting torch switch motion testing circuit is the signal of controller plug 11 action of cutting torch; The output signal of cutting torch state detection circuit 1 is the enabling signal of inverter;
Acting as of cutting torch state detection circuit 1: detect the state of cutting torch access and the actuating signal of switch; During the actuating signal of the output protection plug 8 only having pneumoelectric plug 10 and cutting torch cutting torch simultaneously being detected the normally state of access respective socket and cutting torch switch, the output coupling device of plasma cutting power supply just has the voltage higher than safety (spy is low) voltage.As long as cutting torch state detection circuit 1 can detect that the pneumoelectric plug 10 of cutting torch and the output protection plug 8 of cutting torch normally access the state of respective socket; then the pneumoelectric plug 10 of cutting torch and the output protection plug 8 of cutting torch can form loop with cutting torch state detection circuit 1, and now the pneumoelectric plug 10 of cutting torch must be electrical short with the output protection plug 8 of cutting torch.Those skilled in the art can design different cutting torch state detection circuits 1 according to actual needs.
As shown in Figure 4; the pneumoelectric plug 10 of cutting torch accesses the output coupling device of plasma cutting power supply; the output protection plug 8 of cutting torch accesses the output protection socket of plasma cutting power supply; the controller plug 11 of cutting torch accesses the cutting torch combined socket and switch of plasma cutting power supply, and the pneumoelectric plug 10 of cutting torch and the output protection plug 8 of cutting torch are by shorting stub 9 electrical short on cutting torch.
If the pneumoelectric plug 10 of cutting torch does not access the output coupling device of plasma cutting power supply, or the output protection plug 8 of cutting torch does not access the output protection socket of plasma cutting power supply, or the pneumoelectric plug 10 of cutting torch does not have electrical short with the output protection plug 8 of cutting torch on cutting torch, even if cutting torch switch motion, because cutting torch state detection circuit 1 does not detect that the pneumoelectric plug 10 of cutting torch and the output protection plug 8 of cutting torch normally access the state of respective socket, cutting torch state detection circuit 1 can not output inverter enabling signal, major loop does not work, the output coupling device of plasma cutting power supply is not charged.
Embodiment two:
A kind of plasma cutting power supply output coupling device 4 safety protective circuit, as shown in Figure 2, comprising: inductance RA 2-2 and cutting torch state detection circuit 1;
The output protection socket of plasma cutting power supply connects the b end of inductance RA 2-2; the output coupling device of plasma cutting power supply connects the d end of inductance RA 2-2; the cutting torch combined socket and switch of plasma cutting power supply is connected with cutting torch state detection circuit 1, and a end, the c end of inductance RA2-2 access cutting torch state detection circuit 1 respectively.It is Same Name of Ends that inductance RA 2-2 requires that c end is held with a.
The effect of cutting torch state detection circuit 1 and the course of work of plasma cutting power supply output coupling device 4 safety protective circuit identical with embodiment one.
Embodiment three:
A kind of plasma cutting power supply output coupling device 4 safety protective circuit, as shown in Figure 3, comprising: inductance RA12-3, inductance RA22-4 and cutting torch state detection circuit 1;
The output protection socket of plasma cutting power supply connects the b end of inductance RA12-3; the output coupling device of plasma cutting power supply connects the d end of inductance RA22-4; the cutting torch combined socket and switch of plasma cutting power supply is connected with cutting torch state detection circuit 1, and a end of inductance RA12-3, the c end of inductance RA22-4 access cutting torch state detection circuit 1 respectively.
The effect of cutting torch state detection circuit 1 and the course of work of plasma cutting power supply output coupling device 4 safety protective circuit identical with embodiment one.
Embodiment four:
A kind of cutting torch state detection circuit 1, as shown in Figure 5, comprising: photoelectric isolation module 14, input module switch 15, control detection module 13;
The output coupling device of plasma cutting power supply connects the d end of striking coil T 2-1; the output protection socket of plasma cutting power supply connects the b end of striking coil T 2-1; the a end of striking coil T 2-1, c end connect the input of photoelectric isolation module respectively, the input termination plasma cutting power supply cutting torch combined socket and switch 5 of input module switch 15.The output signal Access Control detection module 13 respectively of photoelectric isolation module 14 and input module switch 15.
Acting as of photoelectric isolation module 14: the mechanical signal of cutting torch access state is converted to the signal of telecommunication, eliminates high-frequency noise simultaneously, the high-frequency noise preventing cutting torch access state detection signal from existing damages and controls detection module 13.
Acting as of input module switch 15: cutting torch switch actuating signals is converted to the signal of telecommunication, eliminates high-frequency noise simultaneously, prevents the controller plug 11 of cutting torch from introducing high-frequency noise and damages control detection module 13.
Control acting as of detection module 13: the signal of the state normally accessed according to cutting torch and cutting torch switch motion, output inverter enabling signal, control the major loop work of plasma cutting power supply, make plasma cutting power supply have output voltage.
The controller plug 11 of the pneumoelectric plug 10 of cutting torch, the output protection plug 8 of cutting torch and cutting torch is reliably connected with plasma cutting power supply output coupling device 4, plasma cutting power supply output protection socket 3 and plasma cutting power supply cutting torch combined socket and switch 5 respectively, and output protection plug 8 electrical short of the pneumoelectric plug 10 of cutting torch and cutting torch.
Now cutting torch switch motion, control the signal that detection module 13 receives state that cutting torch normally accesses and cutting torch switch motion simultaneously, the enabling signal of output inverter, controls the major loop work of plasma cutting power supply.During any one disconnection of above-mentioned connection, even if cutting torch switch motion, can't detect owing to controlling detection module 13 state that cutting torch normally accesses, then can not the enabling signal of output inverter, plasma cutting power supply major loop does not work, and the output coupling device of plasma cutting power supply is not charged.
Striking coil T 2-1 in the present embodiment can replace with the inductance RA 2-2 in the embodiment two or inductance RA12-3 in embodiment three and inductance RA22-4.
By reference to the accompanying drawings detailed description of the invention of the present utility model is described although above-mentioned; but the restriction not to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection domain of the present utility model.
Claims (8)
1. a plasma cutting power supply output coupling device safety protective circuit, is characterized in that, comprising: striking coil T and cutting torch state detection circuit;
Described striking coil T comprises vice-side winding one and vice-side winding two, the output protection socket that one end of described vice-side winding one is connected with cutting torch state detection circuit, the other end accesses plasma cutting power supply; The output coupling device that one end of described vice-side winding two is connected with cutting torch state detection circuit, the other end accesses plasma cutting power supply; Described cutting torch state detection circuit is also connected with the cutting torch combined socket and switch of plasma cutting power supply;
Described cutting torch state detection circuit only connects to the corresponding plug of cutting torch respectively at the cutting torch combined socket and switch of the output protection socket of plasma cutting power supply, the output coupling device of plasma cutting power supply and plasma cutting power supply; and during the output protection plug electrical short of the pneumoelectric plug of cutting torch and cutting torch, could normally work.
2. a kind of plasma cutting power supply output coupling device safety protective circuit as claimed in claim 1, is characterized in that, one end that described vice-side winding one and vice-side winding two access cutting torch state detection circuit is Same Name of Ends.
3. a plasma cutting power supply output coupling device safety protective circuit, is characterized in that, comprising: inductance RA and cutting torch state detection circuit;
Described inductance RA comprises winding one and winding two, the output protection socket that one end of described winding one is connected with cutting torch state detection circuit, the other end accesses plasma cutting power supply; The output coupling device that one end of described winding two is connected with cutting torch state detection circuit, the other end accesses plasma cutting power supply; Described cutting torch state detection circuit is also connected with the cutting torch combined socket and switch of plasma cutting power supply;
Described cutting torch state detection circuit only connects to the corresponding plug of cutting torch respectively at the cutting torch combined socket and switch of the output protection socket of plasma cutting power supply, the output coupling device of plasma cutting power supply and plasma cutting power supply; and during the output protection plug electrical short of the pneumoelectric plug of cutting torch and cutting torch, could normally work.
4. a kind of plasma cutting power supply output coupling device safety protective circuit as claimed in claim 3, is characterized in that, one end that described winding one and winding two access cutting torch state detection circuit is Same Name of Ends.
5. a plasma cutting power supply output coupling device safety protective circuit, is characterized in that, comprising: inductance RA1, inductance RA2 and cutting torch state detection circuit;
The output protection socket that one end of described inductance RA1 is connected with cutting torch state detection circuit, the other end accesses plasma cutting power supply; The output coupling device that one end of described inductance RA2 is connected with cutting torch state detection circuit, the other end accesses plasma cutting power supply; Described cutting torch state detection circuit is also connected with the cutting torch combined socket and switch of plasma cutting power supply;
Described cutting torch state detection circuit only connects to the corresponding plug of cutting torch respectively at the cutting torch combined socket and switch of the output protection socket of plasma cutting power supply, the output coupling device of plasma cutting power supply and plasma cutting power supply; and during the output protection plug electrical short of the pneumoelectric plug of cutting torch and cutting torch, could normally work.
6. a kind of plasma cutting power supply output coupling device safety protective circuit as described in claim 1 or 3 or 5; it is characterized in that; the output coupling device of the pneumoelectric plug access plasma cutting power supply of cutting torch; the output protection socket of the output protection plug access plasma cutting power supply of cutting torch, the cutting torch combined socket and switch of the controller plug access plasma cutting power supply of cutting torch.
7. a kind of plasma cutting power supply output coupling device safety protective circuit as described in claim 1 or 3 or 5, is characterized in that, the pneumoelectric plug of described cutting torch and output protection plug electrical short on cutting torch of cutting torch.
8. a kind of plasma cutting power supply output coupling device safety protective circuit as described in claim 1 or 3 or 5, it is characterized in that, the input signal of described cutting torch state detection circuit is respectively the signal that the pneumoelectric plug of cutting torch and output protection plug access the state of plasma cutting power supply respective socket and the controller plug action of cutting torch respectively; The output signal of cutting torch state detection circuit is the enabling signal of inverter;
When described cutting torch state detection circuit detects that the pneumoelectric plug of cutting torch and the output protection plug of cutting torch access the signal of the state of plasma cutting power supply respective socket and the controller plug action of cutting torch respectively simultaneously; cutting torch state detection circuit just understands the enabling signal of output inverter; otherwise; cutting torch state detection circuit can not the enabling signal of output inverter, and the output coupling device of plasma cutting power supply is not charged.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520113337.3U CN204449596U (en) | 2015-02-16 | 2015-02-16 | Plasma cutting power supply output coupling device safety protective circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520113337.3U CN204449596U (en) | 2015-02-16 | 2015-02-16 | Plasma cutting power supply output coupling device safety protective circuit |
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| CN204449596U true CN204449596U (en) | 2015-07-08 |
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| CN201520113337.3U Active CN204449596U (en) | 2015-02-16 | 2015-02-16 | Plasma cutting power supply output coupling device safety protective circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104646808A (en) * | 2015-02-16 | 2015-05-27 | 山东奥太电气有限公司 | Safety protection circuit of output coupling device of plasma cutting power source and working method of circuit |
| CN109048008A (en) * | 2018-09-21 | 2018-12-21 | 苏州惠捷迦装备科技有限公司 | A kind of Full-automatic plasma cutter device |
-
2015
- 2015-02-16 CN CN201520113337.3U patent/CN204449596U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104646808A (en) * | 2015-02-16 | 2015-05-27 | 山东奥太电气有限公司 | Safety protection circuit of output coupling device of plasma cutting power source and working method of circuit |
| CN104646808B (en) * | 2015-02-16 | 2017-01-11 | 山东奥太电气有限公司 | Safety protection circuit of output coupling device of plasma cutting power source and working method of circuit |
| CN109048008A (en) * | 2018-09-21 | 2018-12-21 | 苏州惠捷迦装备科技有限公司 | A kind of Full-automatic plasma cutter device |
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