CN204030969U - Medical high-frequency high voltage power supply - Google Patents
Medical high-frequency high voltage power supply Download PDFInfo
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- CN204030969U CN204030969U CN201420327706.4U CN201420327706U CN204030969U CN 204030969 U CN204030969 U CN 204030969U CN 201420327706 U CN201420327706 U CN 201420327706U CN 204030969 U CN204030969 U CN 204030969U
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Abstract
The utility model discloses a kind of medical high-frequency high voltage power supply, comprise main circuit, the control circuit that connects main circuit, drive circuit between main circuit and control circuit, be connected to the soft starting circuit after rectification circuit, main circuit comprises the filter circuit, rectification circuit, inverter circuit and the high-frequency and high-voltage device that connect successively, and soft starting circuit for reducing voltge surge after AC rectification becomes direct current; Described soft starting circuit comprises current-limiting resistance, the relay being connected with current-limiting resistance, the delay circuit being connected with relay, low-tension supply that operating voltage is provided to delay circuit.The ratio conversion efficiency high (reaching 80%) of power output of the present utility model and input power, energy utilization efficiency significantly improves, and obviously reduces the empty loss rate of load of mains supply, is conducive to energy savings; Can effectively improve external Iithiasic clinical therapeutic efficacy.Aspect medical x-ray machine, can effectively improve the clear wash rice degree of image.
Description
Technical field
The utility model relates to power technique fields, particularly a kind of medical high-frequency high voltage power supply.
Background technology
High-frequency and high-voltage power supply is for frequency high voltage power supply and medium-frequency high-voltage power supply.High-frequency and high-voltage power supply is a kind of high-voltage switch power supply, and its switching frequency is greatly about 50kHz left and right, and intermediate frequency is in 2kHz left and right, and power frequency is 50/60Hz, and high-frequency and high-voltage power supply is because frequency is high, and transformer can do very littlely.The advantage of high-frequency and high-voltage power supply is: volume is little, and precision is high, and dynamic response is fast, with high content of technology, and along with skyrocketing and technical development of the prices of raw and semifnished materials, high-frequency and high-voltage power supply is more and more had an advantage in price.
Along with the development of medical skill, high-frequency and high-voltage power supply finds broad application in medical treatment.In prior art, application number is that 201020520057.1 utility model discloses a kind of medical high-frequency high voltage generator, comprise rectification filtering module, power converting circuit module, load blocks, control loop module, described rectification filtering module is connected with power converting circuit module, described power converting circuit module is connected with load blocks, and described control loop module is connected with power converting circuit module.Application number is that 201020186768.X utility model discloses a kind of high-frequency and high-voltage generator for Medical high-frequency diagnostic X-ray machine, is mainly made up of control unit, driver element, Power supply unit and X ray generating unit.Central controller is connected with driving governor, A.C. contactor, rectifier filter, rotarting anode driver and control desk; Driving governor is connected with reheater, pressure-oil tank and high-frequency inverter; X-ray tube is connected with reheater and pressure-oil tank; Three-phase electric-wave filter, A.C. contactor, rectifier filter and the high-frequency inverter of Power supply unit are connected successively, and power transformer is connected on the circuit being connected between rotarting anode driver and A.C. contactor and rectifier filter simultaneously.Application number is that 201120071368.9 utility model discloses a kind of high-frequency and high-voltage power supply: in major loop, single phase alternating current power supply connects full-controlled bridge rectification circuit in turn, LC filter circuit, IGBT full bridge inverter, high-frequency step-up transformer, rectification sample circuit, pulse excitation circuit and dedusting electric field.Application number a kind of high-frequency and high-voltage power supply cooling system that has been 201310507603.6 disclosure of the invention, comprising: the first blower fan and the second blower fan on bottom surface are in the enclosure installed; Be arranged on shell bottom surface the air inlet I corresponding with the first blower fan position; Be arranged on shell bottom surface the air outlet corresponding with the second blower fan position; Be arranged on the radiator on fuel tank and inversion box outer wall; Be arranged in fuel tank cap, for monitoring the first temperature sensor of high-tension transformer variations in temperature; Be arranged in inversion case the second temperature sensor changing for monitoring inversion the temperature inside the box; Be arranged on the 3rd blower fan on inversion chamber door; Be arranged on inversion chamber door the air inlet II corresponding with the 3rd blower fan position; Be opened in multiple louvres of inversion box top; Be arranged on the support at four angles of outer casing bottom place; Be connected with the first temperature sensor, the second temperature sensor, the first blower fan, the second blower fan and the 3rd blower fan, controller of fan.
Other related art: paper " design of high-frequency high-voltage switch power source " (middle National IP Network, Wang Rong, University Of Nanchang, 2008).
How above-mentioned prior art, aspect energy savings, be further improved.
Utility model content
Technical problem to be solved in the utility model is, a kind of medical high-frequency high voltage power supply is provided, and its power output is high with the ratio conversion efficiency of input power, is conducive to energy savings.
The technical solution of the utility model is: a kind of medical high-frequency high voltage power supply, comprise main circuit, the control circuit that connects main circuit and the drive circuit between main circuit and control circuit, described main circuit comprises the filter circuit, rectification circuit, inverter circuit and the high-frequency and high-voltage device that connect successively, also comprise and be connected to rectification circuit soft starting circuit below, after becoming direct current in AC rectification, reduce voltge surge.
Described soft starting circuit comprises current-limiting resistance, the relay being connected with current-limiting resistance, the delay circuit being connected with relay, low-tension supply that operating voltage is provided to delay circuit.
Single-phase alternating current is rectified into after direct current, charges to electrochemical capacitor through current-limiting resistance, and low-tension supply provides normal working voltage to delay circuit simultaneously, and time delay is relay adhesive after 15 seconds, by current-limiting resistance short circuit, and rear class load normal power supply.
Described control circuit comprises and prevents that height from holding up output circuit, for preventing that at device start height from holding up output, described in prevent that height from holding up output circuit and being mainly made up of resistance, triode, electric capacity, diode and pressure control switch.
Described control circuit also comprises high pressure overvoltage crowbar, and bridge rectifier, resistance, electric capacity, low-tension supply, triode that high pressure overvoltage crowbar is mainly made up of pressure control switch, diode form.
Described control circuit also comprises high-temperature protection circuit, and high-temperature protection circuit is mainly made up of triode, resistance and electric capacity.
Described control circuit also comprises flow-limiting voltage-stabilizing circuit, and flow-limiting voltage-stabilizing main circuit will be made up of half-wave rectifying circuit, integrated circuit, resistance, diode, electric capacity and low-tension supply.
Described control circuit also comprises high-voltage control circuit, and high-voltage control circuit is mainly made up of resistance, potentiometer, variable resistor.
Described medical high-frequency high voltage power supply also comprises main switch circuit and display circuit; Described main switch circuit is general half-bridge circuit; Display circuit adopts voltmeter, high-tension voltmeter to show or adopts the digital demonstration of single-chip microcomputer.
Described control circuit is control circuit of duty ratio.
Described medical high-frequency high voltage power supply comprises cabinet, and described cabinet inside is provided with side plate, upper plate and lower plate; Described side plate is vertically arranged on middle part rear side in cabinet, upper plate and lower plate are separately fixed at the upper and lower of side plate, described inverter circuit, drive circuit are arranged on upper plate, described control circuit is arranged on side plate, and described filter circuit, rectification circuit, soft starting circuit and high-frequency and high-voltage device are arranged in lower plate.
Described medical high-frequency high voltage power supply also comprises cooling system; Described cooling system comprises air inlet, air outlet and cooling fan, upper plate and lower plate are provided with ventilation hole, between upper plate, lower plate, side plate and cabinet inwall, be all reserved with gas channel, air inlet is located at the positive basifacial of cabinet, air outlet is located at cabinet top, and cooling fan is arranged near the air outlet in cabinet.
The utility model has the advantages that: the ratio conversion efficiency high (reaching 80%) of power output and input power, energy utilization efficiency significantly improves, and obviously reduces the empty loss rate of load of mains supply, is conducive to energy savings; High-frequency and high-voltage power supply ripple coefficient is little, and DC charging efficiency is high, stable, concentrated favourable to the stable generation of the shock wave of extra chock wave lithotriptor and focus, can effectively improve external Iithiasic clinical therapeutic efficacy.Aspect medical x-ray machine, can effectively improve the clear wash rice degree of image.The setting of cooling system, is conducive to ventilation and heat and the normal use of medical high-frequency high voltage power supply inside, extends the useful life of electronic component.
The utility model medical high-frequency high voltage power supply, is mainly used in medical extra chock wave lithotriptor, also can be widely used in the fields such as X-ray high-voltage power supply, ozone generating, high pressure electrostatic painting.
Brief description of the drawings
Fig. 1 is the electrical block diagram of the utility model medical high-frequency high voltage power supply;
Fig. 2 is the structural principle schematic diagram of the soft starting circuit in the utility model;
Fig. 3 is that the height that prevents in the utility model is held up the structural principle schematic diagram of output circuit;
Fig. 4 is the structural principle schematic diagram of the high pressure overvoltage crowbar in the utility model;
Fig. 5 is the structural principle schematic diagram of the high-temperature protection circuit in the utility model;
Fig. 6 is the structural principle schematic diagram of the flow-limiting voltage-stabilizing circuit in the utility model;
Fig. 7 is the structural principle schematic diagram of the high-voltage control circuit in the utility model.
Embodiment
As shown in Figure 1, medical high-frequency high voltage power supply comprises main circuit, the control circuit that connects main circuit and the drive circuit between main circuit and control circuit, described main circuit comprises the filter circuit, rectification circuit, inverter circuit and the high-frequency and high-voltage device that connect successively, also comprise and be connected to rectification circuit soft starting circuit below, after becoming direct current in AC rectification, reduce voltge surge.
Circuit theory: AC220V power supply is through full-wave rectification, inversion, Duty ratio control, driving, high frequency transformer output high pressure, protection and display circuit.
Power supply output-index: square wave; Voltage effective value configuration 0～20KV, high pressure gauge shows; Fixed frequency 15KHz mono-40kHz; Duty ratio control modulation 0～50% is adjustable.
The utility model parameter is mainly used in medical extra chock wave lithotriptor, fixed frequency 15KHz mono-40kHz, High voltage output maximum 20kV, (capable of regulating duty ratio changes High voltage output value); Injectron switching voltage 10kV (non-adjustable).
Operation principle general introduction:
1, rectification and soft starting circuit: input power is single phase alternating current (A.C.) 220V, direct voltage that can about 310V by full-bridge rectification, the output of large capacitor filtering after filtering.As shown in Figure 2.
Soft starting circuit is mainly made up of integrated circuit (IC) 555.Because the filter capacitor in rectification circuit is larger, the direct voltage after rectification reaches 310V, if this voltage is directly added on C4, C5 electric capacity, can cause excessive impulse current, for reducing to impact, avoids burning out rectifying block DC, has adopted soft starting circuit.
Soft start principle: single-phase alternating current is rectified into after direct current, charge to electrochemical capacitor C4, C5 through current-limiting resistance R1, low-tension supply VCC1 provides normal working voltage to IC555 delay circuit simultaneously, time delay is the adhesive of JK1 relay after 15 seconds, normally open contact JK1 closure is by current-limiting resistance R1 short circuit, rear class load normal power supply, has reached the object of soft start.
2, device start prevents that height from holding up output
Principle: as shown in Figure 3, test point while powering on (surveying V) detects 10V voltage, this voltage provides Q6 to control voltage through R10, Q6 conducting, and SP8 output 10V left and right voltage is directly controlled SG3525 the 8th pin (high potential is effective), forbid SG3525 the 11st, 14 pin output pulse signals, C19 is charged to Q7 conducting after certain value, Q6 base stage electronegative potential, Q6 cut-off, SP8 exports electronegative potential, forbids High voltage output releasing.
3, high pressure overvoltage protection
Principle: after the normal work of equipment, high-tension transformer detects winding output detections voltage (square wave ac signal) to be seen through SP7 input, as shown in Figure 4, the square wave alternating-current voltage detecting is after rectification, R7, R8 dividing potential drop, by the input of U9 tripod and the comparison of U9 crus secunda setting voltage, while meeting set point, control voltage (high potential is effective) in U9 the 6th pin output.
Protection process is identical with above-mentioned " 2, device start prevent that height from holding up output " principle, and the high and low value capable of regulating of protection voltage WR1 sets.
4, high temperature protection
Principle: as shown in Figure 5; V output point is connected with SG3525 the 10th pin; when equipment is normally worked in set point of temperature scope, Rt resistance approximates infinity, Q2 cut-off; V output point output electronegative potential; when in the time that main circuit load increases the weight of or has fault, temperature rise Rt resistance decreasing is to adjusted value, Q2 conducting, V output point output high potential control SG3525 the 10th pin; SG3525 forbids the 11st, 14 pin output pulse signals, and main circuit quits work and reaches defencive function.
5, flow-limiting voltage-stabilizing
Principle: as shown in Figure 6, coupling obtains through S4 and inputs sampling voltage to earth-return E utmost point magnetosphere by switching tube, provides control voltage after halfwave rectifier to IC4.Sample electric IC2 the 6th pin output 1.4V voltage when low, controllable continuous ascending, descending high pressure, when sampling electricity IC2 the 6th pin output 11.4V voltage during higher than adjusted value, circuit is in voltage stabilizing state, and high pressure can not be controlled rising again, plays pressure limiting effect simultaneously.
6, high voltage control
As shown in Figure 7, high-voltage control circuit is made up of resistance R 3, potentiometer WR2, variable resistor WR3 etc., R3 and WR3 are the high voltage control upper limit, lower limit resistance, after parameter adjustment, immobilize, when pressure regulation, only adjust potentiometer WR2, actually be the input voltage of adjusting SG3525 the 8th pin, the duty ratio that changes output waveform reaches the height control of High voltage output.
7, main switch circuit
Main switch circuit is general half-bridge circuit.
8, display circuit
Voltmeter and high-tension voltmeter show, also can realize the digital demonstration of single-chip microcomputer.
Described medical high-frequency high voltage power supply comprises cabinet, and described cabinet inside is provided with side plate, upper plate and lower plate; Described side plate is vertically arranged on middle part rear side in cabinet, upper plate and lower plate are separately fixed at the upper and lower of side plate, described inverter circuit, drive circuit are arranged on upper plate, described control circuit is arranged on side plate, and described filter circuit, rectification circuit, soft starting circuit and high-frequency and high-voltage device are arranged in lower plate.
Described medical high-frequency high voltage power supply also comprises cooling system; Described cooling system comprises air inlet, air outlet and cooling fan, upper plate and lower plate are provided with ventilation hole, between upper plate, lower plate, side plate and cabinet inwall, be all reserved with gas channel, air inlet is located at the positive basifacial of cabinet, air outlet is located at cabinet top, and cooling fan is arranged near the air outlet in cabinet.Start cooling fan, the outer cold air of cabinet enters bottom in cabinet from air inlet, and the gas channel in cabinet, through the ventilation hole in upper plate and lower plate, is taken away the heat that in cabinet, electric elements produce, and the air outlet of slave box top flows out.Also can add side air inlet mouth in cabinet two sides, make the cool exterior air each electric elements in cabinet of more easily flowing through.Also control circuit can be arranged on to the front of side plate, at the reverse side installation of heat radiator of side plate, the fin of radiator is through side plate, and radiator is in side plate and cabinet in the gas channel between rear wall, and the heat that can better control circuit components and parts be produced sheds.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within being all included in protection range of the present utility model.
Claims (9)
1. a medical high-frequency high voltage power supply, comprise main circuit, the control circuit that connects main circuit and the drive circuit between main circuit and control circuit, described main circuit comprises the filter circuit, rectification circuit, inverter circuit and the high-frequency and high-voltage device that connect successively, it is characterized in that, also comprise and be connected to rectification circuit soft starting circuit below; Described soft starting circuit comprises current-limiting resistance, the relay being connected with current-limiting resistance, the delay circuit being connected with relay, low-tension supply that operating voltage is provided to delay circuit.
2. medical high-frequency high voltage power supply according to claim 1, it is characterized in that, single-phase alternating current is rectified into after direct current, charge to electrochemical capacitor through current-limiting resistance, low-tension supply provides normal working voltage to delay circuit simultaneously, time delay is relay adhesive after 15 seconds, by current-limiting resistance short circuit, and rear class load normal power supply.
3. medical high-frequency high voltage power supply according to claim 1, is characterized in that, described control circuit comprises and prevent that height from holding up output circuit, for preventing that at device start height from holding up output.
4. medical high-frequency high voltage power supply according to claim 1, is characterized in that, described control circuit also comprises high pressure overvoltage crowbar, high-temperature protection circuit and flow-limiting voltage-stabilizing circuit.
5. medical high-frequency high voltage power supply according to claim 1, is characterized in that, described control circuit also comprises high-voltage control circuit, and high-voltage control circuit is mainly made up of resistance, potentiometer, variable resistor.
6. medical high-frequency high voltage power supply according to claim 1, is characterized in that, also comprises main switch circuit and display circuit; Described main switch circuit is general half-bridge circuit; Display circuit adopts voltmeter, high-tension voltmeter to show or adopts the digital demonstration of single-chip microcomputer.
7. medical high-frequency high voltage power supply according to claim 1, is characterized in that, described control circuit is control circuit of duty ratio.
8. medical high-frequency high voltage power supply according to claim 1, is characterized in that, comprises cabinet, and described cabinet inside is provided with side plate, upper plate and lower plate; Described side plate is vertically arranged on middle part rear side in cabinet, upper plate and lower plate are separately fixed at the upper and lower of side plate, described inverter circuit, drive circuit are arranged on upper plate, described control circuit is arranged on side plate, and described filter circuit, rectification circuit, soft starting circuit and high-frequency and high-voltage device are arranged in lower plate.
9. medical high-frequency high voltage power supply according to claim 8, is characterized in that, also comprises cooling system; Described cooling system comprises air inlet, air outlet and cooling fan, upper plate and lower plate are provided with ventilation hole, between upper plate, lower plate, side plate and cabinet inwall, be all reserved with gas channel, air inlet is located at the positive basifacial of cabinet, air outlet is located at cabinet top, and cooling fan is arranged near the air outlet in cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420327706.4U CN204030969U (en) | 2014-06-18 | 2014-06-18 | Medical high-frequency high voltage power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420327706.4U CN204030969U (en) | 2014-06-18 | 2014-06-18 | Medical high-frequency high voltage power supply |
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| Publication Number | Publication Date |
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| CN204030969U true CN204030969U (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420327706.4U Expired - Fee Related CN204030969U (en) | 2014-06-18 | 2014-06-18 | Medical high-frequency high voltage power supply |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104703374A (en) * | 2015-02-10 | 2015-06-10 | 中国地质调查局南京地质调查中心 | High-power X-fluorescence high-voltage power supply |
| CN104754837A (en) * | 2015-04-04 | 2015-07-01 | 张冰莹 | Input over-voltage protection constant-current power supply |
| CN107374696A (en) * | 2017-05-05 | 2017-11-24 | 浙江荣信医疗科技有限公司 | Lithotripter and its application method in a kind of endoscope-use body |
| CN110613464A (en) * | 2019-09-02 | 2019-12-27 | 珠海市睿影科技有限公司 | Dental X-ray machine |
-
2014
- 2014-06-18 CN CN201420327706.4U patent/CN204030969U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104703374A (en) * | 2015-02-10 | 2015-06-10 | 中国地质调查局南京地质调查中心 | High-power X-fluorescence high-voltage power supply |
| CN104754837A (en) * | 2015-04-04 | 2015-07-01 | 张冰莹 | Input over-voltage protection constant-current power supply |
| CN104754837B (en) * | 2015-04-04 | 2017-02-15 | 张冰莹 | Input over-voltage protection constant-current power supply |
| CN107374696A (en) * | 2017-05-05 | 2017-11-24 | 浙江荣信医疗科技有限公司 | Lithotripter and its application method in a kind of endoscope-use body |
| CN110613464A (en) * | 2019-09-02 | 2019-12-27 | 珠海市睿影科技有限公司 | Dental X-ray machine |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20141217 Termination date: 20150618 |
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| EXPY | Termination of patent right or utility model |