CN221240261U - Titanium pump power supply based on voltage doubling rectification - Google Patents
Titanium pump power supply based on voltage doubling rectification Download PDFInfo
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- CN221240261U CN221240261U CN202322870494.6U CN202322870494U CN221240261U CN 221240261 U CN221240261 U CN 221240261U CN 202322870494 U CN202322870494 U CN 202322870494U CN 221240261 U CN221240261 U CN 221240261U
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- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 30
- 239000010936 titanium Substances 0.000 title claims abstract description 30
- 238000004804 winding Methods 0.000 claims abstract description 37
- 239000003990 capacitor Substances 0.000 claims abstract description 25
- 230000005856 abnormality Effects 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The utility model discloses a titanium pump power supply based on voltage doubling rectification, which comprises a high-frequency step-up transformer and a voltage doubling rectification circuit, wherein a first terminal of a primary winding of the high-voltage step-up transformer is connected to a direct current power supply, a second terminal of the primary winding of the high-voltage step-up transformer is grounded through a switching tube Q1, and a control end of the switching tube Q1 is connected to a control unit; the voltage doubling rectifying circuit comprises a plurality of voltage doubling units, the voltage doubling units are sequentially connected in series, the input end of a first voltage doubling unit is connected to the first end of the secondary winding of the high-frequency step-up transformer, the third end of the first voltage doubling unit is connected to the second end of the secondary winding of the high-frequency step-up transformer, and the third ends of the voltage doubling units adjacent in series are connected together through a capacitor; the output lead-out terminal of the voltage doubling unit is used as a voltage doubling output end HV+. The utility model adopts the voltage doubling rectification mode to realize the titanium pump power supply, and the transformer in the mode has the advantages of small volume, stability and reliability.
Description
Technical Field
The utility model relates to the technical field of power supplies, in particular to a titanium pump power supply based on voltage doubling rectification.
Background
When the high-power microwave tube works, maintaining the high vacuum degree in the wave source is an important static condition, and in order to ensure stable and reliable operation, the vacuum state of the accelerating tube and the klystron is generally required to be maintained by generating 3-5 kV high voltage, so that the internal ignition of the tube is reduced. When the system is stopped, the vacuum state of the pipe needs to be maintained so that the system has a good vacuum state when being started next time and can be immediately put into operation. Titanium pump power is one of the most used power sources in vacuum acquisition systems. The high-power microwave vacuum tube titanium pump power supply system with the patent application number 201210232806.4 discloses a titanium pump power supply which consists of a 220V alternating-current voltage regulator, a 5kV step-up transformer, a high-voltage rectifying and filtering device, a control device, a protection device, a display device, a current detection device, an optical fiber signal conversion device, a remote computer, a high-power microwave vacuum tube and the like.
The 3-5 kV direct current high voltage required by the titanium pump during the operation is generated by a titanium pump power supply, the generated current is determined by the ion concentration of ionized gas molecules and the moving speed of the ionized gas molecules, namely the titanium pump current is directly proportional to the number of the gas molecules and inversely proportional to the vacuum degree, and the vacuum quality of the system can be calculated by the titanium pump current.
The traditional titanium pump power supply mostly uses a transformer to rectify and boost to directly output, but the mode can lead the transformer to have the defects of larger volume, high cost and the like, and meanwhile, the output is unstable and reliable.
Disclosure of utility model
The utility model aims to overcome the defects of the prior art and provide a titanium pump power supply based on voltage doubling rectification, which is realized in a voltage doubling rectification mode, and the transformer in the mode has the advantages of no large volume and stability and reliability.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the titanium pump power supply based on voltage doubling rectification comprises a high-frequency step-up transformer and a voltage doubling rectification circuit, wherein a first terminal of a primary winding of the high-voltage step-up transformer is connected to a direct-current power supply, a second terminal of the primary winding of the high-voltage step-up transformer is grounded through a switching tube Q1, and a control end of the switching tube Q1 is connected to a control unit; the voltage doubling rectifying circuit comprises a plurality of voltage doubling units, each voltage doubling unit comprises diodes D1 and D2 and a capacitor C1, the diodes D1 and D2 are connected in series, the input end of the voltage doubling unit is led out from the anode of the D1, the output end of the voltage doubling unit is led out from the cathode of the D2, the third end of the voltage doubling unit is led out from the cathode of the diode D1, and the input end of the voltage doubling unit is connected to the output end of the voltage doubling unit through the diode C1;
The voltage doubling units are sequentially connected in series, the input end of the first voltage doubling unit is connected to the first end of the secondary winding of the high-frequency step-up transformer, the third end of the first voltage doubling unit is connected to the second end of the secondary winding of the high-frequency step-up transformer, and the third ends of the adjacent voltage doubling units in series are connected together through a capacitor;
when the output voltage of the voltage doubling rectifying circuit is even, the output leading-out terminal of the last voltage doubling unit in the plurality of voltage doubling units connected in series is used as a voltage doubling output end HV+.
When the output voltage of the voltage doubling rectifying circuit is odd multiple, the voltage doubling rectifying circuit further comprises a diode Di and a capacitor Ci, the output end of the last voltage doubling unit in the plurality of voltage doubling units connected in series is connected to the anode of the diode D i, and the cathode leading-out terminal of the diode D1 is used as a voltage doubling output end HV+; the voltage doubling output end HV+ is connected to the third end of the last voltage doubling unit in the plurality of voltage doubling units in series through a capacitor Ci.
And the same-name end of the primary winding of the high-voltage step-up transformer and the same-name end of the secondary winding are opposite in polarity.
The primary winding of the high-voltage step-up transformer is grounded through a switching tube Q1, a current acquisition module is arranged in a loop and used for acquiring current in the loop, the output end of the current acquisition module is connected to a control unit, and the control unit is used for controlling on-off of the switching tube Q1 based on a current signal.
The input end of the control unit is connected with a voltage sensor, and the voltage sensor is arranged at the output end of the voltage doubling rectifying circuit and is used for collecting the output voltage of the voltage doubling rectifying circuit; the control unit performs on-off control on the switching tube Q1 based on the collected voltage.
The output end of the control unit is connected with an alarm and is used for sending an alarm signal when the power supply abnormality is detected.
The utility model has the advantages that: the titanium pump power supply is realized by adopting a voltage doubling rectification mode, and the transformer in the mode has the advantages of small size, stability and reliability;
The voltage multiplication multiple can be realized by adding the circuit unit according to actual needs, and only the capacitor and the diode are added to the circuit component added once, so that the cost is low and the voltage multiplication multiple is reliable, and the high-voltage requirement of the titanium pump power supply is met; the voltage doubling rectifying circuit is adopted, so that the performance is more stable, and the rising effect is better. The requirement on the flyback inductance of the transformer is reduced, and the transformer is not easy to damage.
Drawings
The contents of the drawings and the marks in the drawings of the present specification are briefly described as follows:
FIG. 1 is a schematic diagram of a power supply circuit of a titanium pump according to the present utility model.
Detailed Description
The following detailed description of the invention refers to the accompanying drawings, which illustrate preferred embodiments of the invention in further detail.
The application provides a voltage-doubling rectifying titanium pump power supply which is used for realizing voltage-doubling output according to requirements. The circuit comprises: the titanium pump power supply based on voltage doubling rectification comprises a high-frequency step-up transformer and a voltage doubling rectification circuit;
The high-voltage step-up transformer is provided with a primary winding and a secondary winding, and the same-name end of the primary winding of the high-voltage step-up transformer and the same-name end of the secondary winding are opposite in polarity. The primary side is connected with a single-ended flyback switching power supply DC power supply; namely, a first terminal of a primary winding of the high-voltage step-up transformer is connected to a direct current power supply DC, a second terminal of the primary winding is grounded after passing through a drain electrode and a source electrode of a switching tube Q1, and a control end of the switching tube Q1 is connected to a control unit; the control unit is used for outputting PWM signals to drive the Q1 to be conducted or not, so that the coil inductance of the transformer is controlled to generate induced current signals and the induced current signals are conducted to the secondary side through the transformer, the control unit is used for driving control, and the control unit can be realized by a controller which is commonly used in the working field and can drive and control a switching tube, such as an STM32 series singlechip.
In the secondary side of the transformer, the primary side senses the voltage of the secondary side to be smaller, and the voltage requirement cannot be met, so that voltage doubling is needed.
The voltage doubling rectifying circuit comprises a plurality of voltage doubling units, each voltage doubling unit comprises diodes D1 and D2 and a capacitor C1, the diodes D1 and D2 are connected in series, the input end of the voltage doubling unit is led out from the anode of the D1, the output end of the voltage doubling unit is led out from the cathode of the D2, the third end of the voltage doubling unit is led out from the cathode of the diode D1, and the input end of the voltage doubling unit is connected to the output end of the voltage doubling unit through the diode C1;
Each voltage doubling unit can realize twice voltage doubling, and 2, 4 and 6 … even voltage doubling can be realized by connecting a plurality of voltage doubling units in series to form a series structure.
After the voltage of the titanium pump power supply is determined, the voltage doubling multiple of the secondary side can be determined according to the required voltage, and then the number of the voltage doubling units can be selected;
When the output voltage of the voltage doubling rectifying circuit is required to be even, the even number is divided by 2 to obtain the number of corresponding voltage doubling units, a plurality of voltage doubling units are sequentially connected in series, a first voltage doubling unit … which is connected in series is arranged from left to right until the last voltage doubling unit is arranged, the input end of the first voltage doubling unit after being connected in series is connected to the first end of the secondary winding of the high-frequency step-up transformer, the third end of the first voltage doubling unit is connected to the second end of the secondary winding of the high-frequency step-up transformer through a capacitor C4, and the third ends of the adjacent voltage doubling units are connected together through a capacitor; the output leading-out terminal of the last voltage doubling unit in the plurality of voltage doubling units connected in series is used as a voltage doubling output end HV+, so that HV+ can achieve high-voltage output of the table pump for outputting the titanium pump power supply.
When the output voltage of the voltage doubling rectifying circuit is odd multiple, the odd multiple is subtracted by 1 and then divided by 2 to obtain the number of voltage doubling units, the voltage doubling units are sequentially connected in series, the first voltage doubling unit … to the last voltage doubling unit are respectively connected in series from left to right, the input end of the first voltage doubling unit after being connected in series is connected to the first end of the secondary winding of the high-frequency step-up transformer, the third end of the first voltage doubling unit is connected to the second end of the secondary winding of the high-frequency step-up transformer through a capacitor C4, and the third ends of the adjacent voltage doubling units are connected together through a capacitor; in order to realize odd multiple, a diode Di and a capacitor Ci are led into a voltage-multiplying rectifying circuit, the output end of the last voltage-multiplying unit in a plurality of voltage-multiplying units connected in series is connected to the anode of a diode D i, and the cathode leading-out terminal of a diode D1 is used as a voltage-multiplying output end HV+; the voltage doubling output end HV+ is connected to the third end of the last voltage doubling unit in the plurality of voltage doubling units in series through a capacitor Ci. This doubles through the diodes Di, ci after the even number of the voltage doubler units are formed, thereby realizing output.
In order to realize the monitoring and alarming of the output of the circuit, the application is provided with a current sensor, a voltage sensor and an alarm, a current acquisition module is arranged in a loop of the primary winding of the high-voltage step-up transformer, which is grounded through a switching tube Q1, and is used for acquiring the current in the loop, the output end of the current acquisition module is connected to a control unit, and the control unit carries out on-off control on the switching tube Q1 based on a current signal. The current sensor can adopt a special sensor or a current sampling resistor to realize sampling, and the control unit performs on-off control on the switching tube Q1 according to a sampled current signal and can disconnect the Q1 when the current is abnormal so as to realize protection of the whole circuit.
The input end of the control unit is connected with a voltage sensor, and the voltage sensor is arranged at the output end of the voltage doubling rectifying circuit and is used for collecting the output voltage of the voltage doubling rectifying circuit; the control unit performs on-off control on the switching tube Q1 based on the collected voltage. The current sensor is used for collecting a high-voltage signal of the pump output by the application, and when the voltage is abnormal, such as overvoltage, the control unit can realize the protection function by controlling the disconnection of the Q1 after detecting the overvoltage.
After any fault of voltage and current, a monitoring prompt is required to be given, so the application is provided with the buzzer for alarming, the output end of the control unit is connected with the buzzer to give an alarm signal, and the alarm signal is sent when the power supply abnormality is detected.
As shown in fig. 1, the circuit designed in a 7-time voltage doubling mode according to the application comprises three voltage doubling units connected in series; the input end of the first voltage doubling unit connected in series is the anode of a diode D1, the first end of the secondary winding is connected with the anode of the diode D1, and the output end of the last voltage doubling unit is the cathode of a D6; two ends of D1D2, D3D4 and D5D6 are respectively connected with capacitors C1, C2 and C3 in series; d i and Ci are D7 and C7 respectively; the circuit structure shown in fig. 1 is formed after the circuit structures are connected together according to the scheme. The circuit principle is described below:
The basic composition schematic diagram of the circuit is shown in figure 1, and the titanium pump power supply mainly comprises a 1 DC power supply; 2. the control circuit 3 and the voltage doubling rectifying circuit 3, wherein the titanium pump power supply comprises a power supply and a high-frequency switch: it has three ports; high frequency step-up transformer: the transformer has two paths of a primary winding and a secondary winding, wherein the same-name end of the primary winding and the same-name end of the secondary winding have opposite polarities. The primary is connected to the input end of the DC power supply, the secondary is connected to the input end of the post voltage doubling circuit, and the control circuit: a high frequency switch control signal is generated based on a flyback voltage generated in the primary winding and a current feedback signal of the inductor. Voltage doubler rectifying circuit: the voltage doubling rectifying circuit is formed by combining a capacitor and a diode, and the input end of the voltage doubling rectifying circuit is connected to the secondary side of the high-frequency step-up transformer. The output end is the direct current high voltage required by the system. The control system can select the singlechip to collect and analyze the data of the current and the voltage.
1) And when the switching tube Q1 is conducted, the primary winding of the flyback transformer is conducted, and the voltage applied by the primary of the transformer is constant, so that energy is stored in the inductor. The Q1 turns off, the current of the excitation inductor reverses the winding voltage (flyback voltage), and the transformer current is transferred from the primary to the secondary at the instant of Q1 turn off, and after a few switching cycles, the energy stored by the transformer is transferred all the way to the load.
2) The voltage doubling rectifying circuit is in a working mode, a first period is a positive half period, a capacitor C4 is fully charged, voltages at two ends are U1, voltages of a transformer secondary and the capacitor C4 are mutually overlapped, so that the capacitor C1 is fully charged, voltages at two ends are 2U1, a second period is a positive half period, the capacitors C1 and C4 and transformer voltages are mutually overlapped, wherein the voltage of the C4 is reversed and counteracted, the capacitor C5 is fully charged to be 2U1, output voltages take C4 and C5, three times of boosting is achieved at two ends of the output voltage, and the like, primary voltages can be boosted to required voltages, and seven times of boosting can be achieved to achieve output as shown in figure 1.
It is obvious that the specific implementation of the present invention is not limited by the above-mentioned modes, and that it is within the scope of protection of the present invention only to adopt various insubstantial modifications made by the method conception and technical scheme of the present invention.
Claims (6)
1. A titanium pump power supply based on voltage doubling rectification is characterized in that: the high-frequency step-up transformer comprises a high-frequency step-up transformer and a voltage doubling rectifying circuit, wherein a first terminal of a primary winding of the high-frequency step-up transformer is connected to a direct current power supply, a second terminal of the primary winding of the high-frequency step-up transformer is grounded through a switching tube Q1, and a control end of the switching tube Q1 is connected to a control unit; the voltage doubling rectifying circuit comprises a plurality of voltage doubling units, each voltage doubling unit comprises diodes D1 and D2 and a capacitor C1, the diodes D1 and D2 are connected in series, the input end of the voltage doubling unit is led out from the anode of the D1, the output end of the voltage doubling unit is led out from the cathode of the D2, the third end of the voltage doubling unit is led out from the cathode of the diode D1, and the input end of the voltage doubling unit is connected to the output end of the voltage doubling unit through the diode C1;
The plurality of voltage doubling units are sequentially connected in series, the input end of the first voltage doubling unit is connected to the first end of the secondary winding of the high-frequency step-up transformer, the third end of the first voltage doubling unit is connected to the second end of the secondary winding of the high-frequency step-up transformer through a capacitor C4, and the third ends of the adjacent voltage doubling units in series are connected together through a capacitor;
when the output voltage of the voltage doubling rectifying circuit is even, the output leading-out terminal of the last voltage doubling unit in the plurality of voltage doubling units connected in series is used as a voltage doubling output end HV+.
2. A titanium pump power supply based on voltage doubler rectification as defined in claim 1, wherein: when the output voltage of the voltage doubling rectifying circuit is odd multiple, the voltage doubling rectifying circuit further comprises a diode Di and a capacitor Ci, the output end of the last voltage doubling unit in the plurality of voltage doubling units connected in series is connected to the anode of the diode Di, and the cathode leading-out terminal of the diode D1 is used as a voltage doubling output end HV+; the voltage doubling output terminal vh+ is connected to the third terminal of the last voltage doubling unit of the plurality of voltage doubling units connected in series through a capacitor Ci.
3. A titanium pump power supply based on voltage doubler rectification as claimed in claim 1 or claim 2, wherein: and the same-name end of the primary winding of the high-voltage step-up transformer and the same-name end of the secondary winding are opposite in polarity.
4. A titanium pump power supply based on voltage doubler rectification as claimed in claim 1 or claim 2, wherein: the primary winding of the high-voltage step-up transformer is grounded through a switching tube Q1, a current acquisition module is arranged in a loop and used for acquiring current in the loop, the output end of the current acquisition module is connected to a control unit, and the control unit is used for controlling on-off of the switching tube Q1 based on a current signal.
5. A titanium pump power supply based on voltage doubler rectification as claimed in claim 1 or claim 2, wherein: the input end of the control unit is connected with a voltage sensor, and the voltage sensor is arranged at the output end of the voltage doubling rectifying circuit and is used for collecting the output voltage of the voltage doubling rectifying circuit; the control unit performs on-off control on the switching tube Q1 based on the collected voltage.
6. A voltage doubler rectification based titanium pump power supply as defined in claim 5, wherein: the output end of the control unit is connected with an alarm and is used for sending an alarm signal when the power supply abnormality is detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322870494.6U CN221240261U (en) | 2023-10-25 | 2023-10-25 | Titanium pump power supply based on voltage doubling rectification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322870494.6U CN221240261U (en) | 2023-10-25 | 2023-10-25 | Titanium pump power supply based on voltage doubling rectification |
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| Publication Number | Publication Date |
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| CN221240261U true CN221240261U (en) | 2024-06-28 |
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| CN202322870494.6U Active CN221240261U (en) | 2023-10-25 | 2023-10-25 | Titanium pump power supply based on voltage doubling rectification |
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- 2023-10-25 CN CN202322870494.6U patent/CN221240261U/en active Active
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