CN101667785A - High frequency and high voltage power supply device for industrial X-ray diagnostic machine - Google Patents
High frequency and high voltage power supply device for industrial X-ray diagnostic machine Download PDFInfo
- Publication number
- CN101667785A CN101667785A CN200910187355A CN200910187355A CN101667785A CN 101667785 A CN101667785 A CN 101667785A CN 200910187355 A CN200910187355 A CN 200910187355A CN 200910187355 A CN200910187355 A CN 200910187355A CN 101667785 A CN101667785 A CN 101667785A
- Authority
- CN
- China
- Prior art keywords
- circuit
- voltage
- frequency
- transformer
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 36
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 230000000694 effects Effects 0.000 claims abstract description 11
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 6
- 230000005669 field effect Effects 0.000 claims description 18
- 230000001629 suppression Effects 0.000 claims description 14
- 238000004804 winding Methods 0.000 claims description 14
- 230000010355 oscillation Effects 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 238000013459 approach Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 230000035772 mutation Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Landscapes
- X-Ray Techniques (AREA)
Abstract
The invention provides a high frequency and high voltage power supply device for an industrial X-ray diagnostic machine, comprising a filament circuit with a tube current control circuit, and a high frequency and high voltage power circuit with a tube voltage control circuit. The high frequency and high voltage power supply device is characterized in that the design for improving circuit transmission efficiency by utilizing resonance effect is as follows: the high frequency and high voltage power circuit has fixed resonance frequency after a power output circuit, a high frequency and high voltage power transformer circuit, a voltage-multiplying circuit and a distributed capacitor between anode and cathode of an X-ray tube are connected; the filament circuit also has fixed resonance frequency after the power output circuit and a filament transformer circuit are connected; the high frequency and high voltage power circuit and the filament circuit are respectively connected to a 11V switch DC voltage stabilizing circuit and a voltage control oscillating and driving circuit through the power output circuit thereof; the power output circuit is connected to an AC220V rectification circuit comprising a noise inhibiting circuit; the working frequency of the voltage control oscillating circuit is close to the fixed resonance frequency of the two circuits; secondary output voltage of thehigh frequency and high voltage transformer is sinusoidal wave high-frequency high voltage; and the sinusoidal high voltage is added to the following voltage-multiplying circuit. Therefore, the circuit of the device has high transmission efficiency, good reliability and low manufacturing cost.
Description
Technical field
The present invention relates to supply unit, be used for the high frequency and high voltage power supply device of industrial X-ray diagnostic machine.
Background technology
American-European developed country, traditional power frequency x-ray flaw detector is eliminated, the substitute is the x-ray flaw detector of the high-frequency and high-voltage power supply of superior performance, the domestic market demand also just changes towards this direction, but the high frequency and high voltage power supply device that imported product disposed costs an arm and a leg, and the expansion that restricts this class defectoscope is used.
At present, the circuit that high frequency and high voltage power supply device adopted of this purposes substantially as shown in Figure 2: also comprise tube current and tube voltage control circuit in heater chain that links to each other with X-ray tube and high-frequency high-voltage source circuit.R among Fig. 2
A, R
BBe respectively tube voltage, the sample resistance in the tube current sample circuit.Components and parts were formed around tube voltage and tube current control circuit were reached by digital regulation resistance.
Two kinds of noise suppression circuits in the prior art AC220V rectification circuit, the problem of existence are that the filter capacitor failure rate in the power rectifier circuit is higher, and its main cause is from due to the disturbing pulse voltage of " core circuit ".Shown in Figure 12,13; wherein C33, C34, B11 and B12, B13 are respectively noise suppression circuit among the figure; owing to be arranged on filter capacitor C35-C37 and C38-C40 back, so filter capacitor is not had the effect of protection and causes filter capacitor failure rate height in this circuit.
Summary of the invention
The purpose of this invention is to provide a kind of high frequency and high voltage power supply device for industrial X-ray diagnostic machine, to adopt resonance effects to improve the theory of the efficiency of transmission of circuit, redesign each function parallel circuit, obtain the efficiency of transmission height, reliability height of circuit, the effect that cost is low.
High frequency and high voltage power supply device for industrial X-ray diagnostic machine of the present invention, include the heater chain and the high-frequency high-voltage source circuit that the tube voltage control circuit is arranged of tube current control circuit, the design that it is characterized in that utilizing resonance effects to improve circuit transmission efficient is: in the high-frequency high-voltage source circuit with power output circuit, has fixing resonance frequency after distributed capacitance couples together between high frequency high voltage transformer circuit and voltage-multiplying circuit and X-ray tube anode and cathode, in the heater chain with power output circuit with also have fixing resonance frequency after the filament transformer circuit is connected, high-frequency high-voltage source circuit and heater chain all are to be connected 11V switch DC voltage stabilizing circuit and VCO and drive circuit respectively by power output circuit wherein, and connect the AC220V rectification circuit contain noise suppression circuit by power output circuit, wherein the natural resonance frequency of heater chain is 45 ± 5kHz, and the operating frequency of the Voltage-Controlled oscillation circuit in the heater chain is that 55～70kHz is adjustable continuously; The natural resonance frequency of high-frequency high-voltage source circuit is 25 ± 5kHz, and the operating frequency of the Voltage-Controlled oscillation circuit in the high-frequency high-voltage source circuit is that 35～50kHz is adjustable continuously; The secondary output voltage of high frequency high voltage transformer is a sinusoidal waveform high-frequency and high-voltage, and sinusoidal high pressure is added in the voltage-multiplying circuit of back.
The key element of decision high-frequency and high-voltage power supply circuit resonance curve is the distributed capacitance of capacitor C 1 and high frequency high voltage transformer and capacity and the negative electrode of X-ray tube and the distributed capacitance of anode of the high-voltage capacitance C5～C14 in leakage inductance and the voltage-multiplying circuit.The key element of heater chain resonance point is the distributed capacitance and the leakage inductance of capacitor C 15 amount of capacity and filament transformer.
Characteristics of the present invention are:
1, the noise suppression circuit in the AC220V rectification circuit;
2, brand-new VCO and drive circuit;
3, power output circuit has two advantages: the first will produce a powerful sine voltage, to improve the efficiency of transmission of voltage-multiplying circuit; Its two failure rate that can reduce voltage-multiplying circuit mesohigh electric capacity improves the reliability of circuit.
4, the efficiency of transmission that adopts resonance principle to improve circuit in the global design of circuit is the innovation greatly in the design of this machine.Because the ripple of frequency high output voltage is little, the penetration power of the X ray of equipment emission is strong, but its operating frequency is limited by the frequency characteristic of used element.The resonance curve of this device high-frequency high-voltage source circuit and heater chain is that along with the raising of adopting the components and parts frequency characteristic, its resonance curve also will change thereupon by the decision of the components and parts of present employing.
5, the efficiency of transmission height of circuit, reliability height, low cost of manufacture.
Description of drawings
Fig. 1 is that the present invention utilizes resonance effects to improve the high-frequency and high-voltage power supply circuit theory diagrams of circuit transmission efficient;
Fig. 2 is this device circuit block diagram of each function parallel circuit same as the prior art;
Fig. 3 is a high-frequency and high-voltage power supply schematic block circuit diagram of the present invention;
Fig. 4 is a heater chain theory diagram of the present invention;
Fig. 5 is the schematic diagram that power output is connected with the filament transformer circuit in the heater chain of the present invention;
Fig. 6 is the noise suppression circuit schematic diagram in the AC220V rectification circuit of the present invention;
Fig. 7 is VCO of the present invention and drive circuit schematic diagram;
Fig. 8 is a push-pull power output circuit schematic diagram in the prior art;
Fig. 9 is a sine-wave current voltage oscillogram in the high frequency high voltage transformer primary and secondary winding;
Figure 10 is the resonance curve figure of high-frequency high-voltage source circuit of the present invention;
Figure 11 is the resonance curve figure of heater chain of the present invention;
Figure 12 is the noise suppression circuit figure in a kind of AC220V rectification circuit of the prior art;
Figure 13 is the noise suppression circuit figure in the another kind of AC220V rectification circuit of the prior art;
Embodiment
The design of each parallel circuit in the accompanying drawings high frequency and high voltage power supply device for industrial X-ray diagnostic machine of the present invention:
Although still the functional circuit title with prior art is identical for each function parallel circuit in the supply unit as can be seen from Figure 2 of the present invention, the VCO of high-frequency high-voltage source circuit and drive circuit connect, and what be that the VCO of tube voltage control circuit, heater chain and drive circuit connect is the tube current control circuit, but each several part circuit inside is different.High-frequency high-voltage source circuit shown in Figure 1 is characterized in that utilizing resonance effects, improves the design of circuit transmission efficient: wherein power output circuit, high frequency high voltage transformer circuit, voltage-multiplying circuit are coupled together.Power output circuit driving transformer twice winding is passed through resistance R among Fig. 1
1, R
2Link to each other with the grid of field effect transistor Q1, Q2, field effect transistor Q1, Q2 and capacitor C 1 are formed power output circuit.Field effect transistor Q1 links to each other with the 300V power supply, field effect transistor Q2 ground connection, connects capacitor C 1 at field effect transistor Q1, Q2 source-drain electrode connecting place, and capacitor C 1 other end links to each other with the elementary of high frequency high voltage transformer, the other end ground connection that high frequency high voltage transformer is elementary.At capacitor C 1 and the elementary connecting place of high frequency high voltage transformer to also being connected to the antihunt circuit of forming by diode D1～D3, capacitor C 3, resistance R 3 and diode D4～D6, capacitor C 4 and resistance R 4 between the ground.High frequency high voltage transformer secondary with wherein high-voltage capacitance C5, kenetron D7 and the high-voltage capacitance C10 of voltage-multiplying circuit link to each other, kenetron D7, D8, the high-voltage capacitance C5 other end link to each other with high-voltage capacitance C6, be connected to high-voltage capacitance C14 in this way in succession, high-voltage capacitance C10 and kenetron D7 junction ground connection and and the X-ray tube anode and cathode between distributed capacitance C
0One end links to each other, distributed capacitance C
0The other end and high-voltage capacitance C14, high-voltage diode D16 junction are connected to form voltage-multiplying circuit.
This high-frequency high-voltage source circuit that the present invention connects can make this supply unit produce sine voltage, thereby improves the efficiency of transmission in the voltage-multiplying circuit of its back, can reduce the failure rate of voltage-multiplying circuit mesohigh electric capacity simultaneously.
From Fig. 3,4 two theory diagrams as can be seen, the high-frequency high-voltage source circuit is removed the high frequency high voltage transformer circuit, voltage-multiplying circuit is different with the filament transformer circuit, identical with heater chain is: two power output circuits connect 11V switch DC voltage stabilizing circuit, VCO and drive circuit separately respectively, and power output circuit is communicated with the AC220V rectification circuit.
" power output circuit " in the heater chain seen Fig. 5 with the connected mode of " filament transformer circuit ":
Twice level windings of driving transformer link to each other with field effect transistor Q3, Q4 grid by resistance R 5, R6, field effect transistor Q3, Q4 source-drain electrode junction link to each other with capacitor C 15, elementary linking to each other of high frequency transformer B2 in the other end of capacitor C 15 and the filament transformer, the other end ground connection that B2 is elementary, capacitor C 16 links to each other with the elementary two ends of B2, also connects the antihunt circuit of being made up of diode D17, capacitor C 17, resistance R 7 and diode D18, capacitor C 18, resistance R 8 at the elementary two ends of B2.Filament transformer is that three high frequency transformer B2, B3, B4 that are made up of magnet ring are in series, and wherein B4 level is to be rectified into direct current by diode D19, D20, and field effect transistor Q3, Q4 and capacitor C 15 are formed power output circuit.Because heater chain links to each other with the negative electrode of X-ray tube, voltage is very high, adopts three series transformers that high voltage is divided into three equal parts, to reduce the voltage between adjacent winding, improves reliability.Transformer B4 time level becomes direct voltage after rectifies, purpose is the voltage loss when reducing long-distance transmissions.
Operation principle: heater chain is by three transformer B2, B3, B4 is in series, and wherein three transformers are formed by three magnet ring coilings respectively, transformer B4 time level becomes direct voltage, purpose after rectifies be the loss of voltage when reducing long-distance transmissions.
Because filament transformer links to each other with the negative electrode of X-ray tube, voltage is very high, and adopting three series connection magnet rings is that the negative electrode high voltage is divided into trisection, to reduce the voltage between each winding, improves reliability.Filament voltage is just adjusted with the size of tube current and is directly proportional.
Noise suppression circuit is seen Fig. 6 in the AC220V rectification circuit of the present invention, after the AC220V both ends of power connects the bridge rectifier that D21-D24 forms, the filter circuit of being made up of C19-C21, follows the serial door circuit.Gate circuit comprises that an end connects the diode D25 of power supply, after this connects capacitor C 22-C27 and resistance R 9 at both ends of power, forms noise suppression circuit.
The operation principle of the described gate circuit of Fig. 6: only allow to pass through, and all can't pass through this gate circuit to reverse any type of voltage or electric current with equidirectional voltage of diode D25 or electric current." power output circuit " and " high frequency high voltage transformer circuit " can produce higher direct impulse voltage at work, if this voltage moves back in filter capacitor C19-C21 and the AC220V electrical network, can cause harmful effect to electrochemical capacitor C19-C21 and other power consumption equipment of filtering, because the present invention has increased this gate circuit in circuit, therefore, disturbing pulse voltage is lived by this door shield, thereby eliminated filter capacitor and AC220V electrical network are damaged, disturb, reached the purpose that suppresses noise voltage.Facts have proved that this disturbing pulse voltage is very big to the influence in useful life of electrolytic capacitor filter C19-C21, has added after this gate circuit, can reduce the failure rate of electrolytic capacitor filter greatly, thus the useful life of having improved complete machine.
VCO and drive circuit are seen Fig. 7 among the present invention: the pin 4 of integrated circuit T, pin 8, transistor Q5 collector electrode connect the 11V voltage end, and link to each other with the pin 5 of integrated circuit T by voltage stabilizing didoe W1, resistance R 10, R11, R12, the base circuit of transistor Q5 passes through resistance R 17 and potentiometer R
W1Centre tap links to each other and connects 11V power supply, potentiometer R through resistance R 16
W1The other end connect resistance R 18 to ground; Capacitor C 31, C32 are the filter capacitors of Q5 base circuit, series resistance R15 in the middle of it, resistance R 15 links to each other with the Q5 base stage, the pin 6 of integrated circuit T links to each other with the pin 7 of integrated circuit T through resistance R 14, the pin 7 of integrated circuit T connects 11V voltage through resistance R 13, be connected capacitor C 28, C30 respectively, pin 1 series diode D26, D27 ground connection between the pin 2 of integrated circuit T, pin 5 and the pin 1.The pin 3 of integrated circuit T connects capacitor C 29 positive poles, and the C29 negative pole connects the elementary of driving transformer B5, and the elementary other end links to each other with ground.Two groups of secondary winding of driving transformer B5 are around on the contrary, to drive Q1, the Q2 in the power output circuit shown in Figure 1.
Operation principle
When pin 5 current potentials of integrated circuit T changed among Fig. 7, the operating frequency of integrated circuit changed, and when pin 5 current potentials raise, operating frequency reduced, otherwise increase frequency, transistor Q5 base circuit is by capacitor C 31, C32, resistance R 15, R16, R17, R18 and potentiometer R
W1Form, collector circuit is by the 11V power supply, resistance R 10, and R11, the pin 5 of R12 and T is formed.
Among Fig. 7, adjust potentiometer R
W1Make the Q5 base potential approach zero volt, at this moment, pin 5 voltages of integrated circuit T are the highest, make the operating frequency of integrated circuit T minimum, adjust potentiometer R
W1Base potential is raise, and transistor Q5 is by by entering the amplification region, and its collector voltage begins to change to low, and pin 5 voltages of T are reduced, so the operating frequency of integrated circuit T also from low to high direction change; As potentiometer R
W1When being transferred to the other end, transistor Q5 becomes conducting state, make its collector voltage approach zero volt, pin 5 voltages of T drop to minimum, thereby make the operating frequency of integrated circuit T rise to the highest, more than be exactly the basic skills of adjusting integrated circuit T operating frequency, realize the manual of " tube voltage " or " tube current " or control automatically with this.Transformer B5 is a driving transformer, and secondary two windings are around on the contrary, and the output voltage phase place is opposite, to drive Q1, the Q2 in the power output circuit shown in Figure 1, makes its alternate conduction and ends.
" power output circuit " of domestic and international machine of the same type all adopts push-pull circuit at present, and coil L1 among Fig. 8, L2 are two elementary windings of high frequency high voltage transformer B10, and transformer B6, B7, B8 and B9 are noise suppression circuit.
When high power valve Q6 conducting, Q7 end, the 300V supply voltage through L1, Q6 to ground, to coil L1 charging energy storage.When Q6 ends, the Q7 conducting, 300V supply voltage coils L2, Q7 are to ground, to L2 charging energy storage, meanwhile, coil L1 will discharge own energy stored in the mode of high-frequency and high-voltage, this shows, coil L1, L2 always under powerful condition, work simultaneously, because the effect of mutual inductance is again always in strong phase mutual interference; In order to reduce this interference, added noise suppression circuit respectively, must be pointed out that this conflicting mode has influenced the useful life of this circuit.
The sort circuit of prior art, pulse voltage of B10 level output of transformer, be added in the voltage-multiplying circuit thereafter, the influence that makes the high-voltage capacitance in the voltage-multiplying circuit bear sudden change high pressure and mutation current, mutation voltage and electric current are the basic reasons that causes high-voltage capacitance to lose efficacy, in order to improve the quality of product, the quality of high-voltage capacitance is had higher requirement, thereby equipment cost is risen.
The present invention has the power output circuit of high frequency high voltage transformer shown in Fig. 1 first half, field effect transistor Q1 and Q2 are in alternate conduction and cut-off state in the power output circuit, when the Q1 conducting, Q2 ends, the 300V power supply is to the elementary winding charging of C1 and B1, also exist the free oscillation process of B1 self natural resonance frequency simultaneously, by diode D1-D6, capacitor C 3, C4, resistance R 3, the antihunt circuit that R4 forms is carried out damping to it, thereby reduced it to back damage of circuit effect, simultaneously also reduced high frequency radiation, the voltage when capacitor C 1 two ends is when approaching 300V, its charging current approaches zero, at this moment, Q1 ends, the Q2 conducting, the operating state of circuit, by the process of 300V power supply, become the capacitor C 1 that in this charging process, has stored a large amount of electric energy, from the process of opposite direction to the elementary winding charging of high frequency high voltage transformer B1 to the C1 charging.More than flow through the elementary winding of high frequency high voltage transformer B1 in two processes voltage, current waveform as shown in Figure 9.
As can be seen from Figure 9, high frequency high voltage transformer B1 secondary output voltage is a sine-shaped high-frequency and high-voltage, and sinusoidal high pressure is added in the voltage-multiplying circuit of back, and following benefit is arranged, one has reduced the burden of voltage-multiplying circuit mesohigh electric capacity, its two efficiency of transmission that has improved circuit.
The resonance curve distribution situation of high-frequency high-voltage source circuit of the present invention as shown in figure 10, wherein 25 ± 5kHz is the resonance point of high-frequency high-voltage source circuit, the operating frequency of the Voltage-Controlled oscillation circuit in the high-frequency high-voltage source circuit is that 35～50kHz is adjustable continuously, when the operating frequency of Voltage-Controlled oscillation circuit is 50kHz, the output voltage minimum, along with reducing of frequency, output voltage increases, when frequency is 35kHz, the output voltage maximum.Influence the components and parts of entire circuit resonance point: transformer B1 among Fig. 1, capacitor C 1, distributed capacitance C between the anode and cathode of C5-C14 and X-ray tube
0
The resonance curve of this machine heater chain as shown in figure 11,45 ± 5kHz is the resonance point of heater chain, the operating frequency of heater chain Voltage-Controlled oscillation circuit is 55～70kHz, adjustable continuously, when the operating frequency of Voltage-Controlled oscillation circuit was 70kHz, the output voltage minimum was with reducing of operating frequency, output voltage progressively improves, output voltage maximum when operating frequency is 55kHz.Influence the components and parts of heater chain resonance point: capacitor C 15 among Fig. 5, transformer B2, B3, B4.
Facts have proved, adopt resonance principle, improved the efficiency of transmission of circuit greatly.
Claims (7)
1, high frequency and high voltage power supply device for industrial X-ray diagnostic machine, include the heater chain and the high-frequency high-voltage source circuit that the tube voltage control circuit is arranged of tube current control circuit, the design that it is characterized in that utilizing resonance effects to improve circuit transmission efficient is: in the high-frequency high-voltage source circuit with power output circuit, has fixing resonance frequency after distributed capacitance couples together between high frequency high voltage transformer circuit and voltage-multiplying circuit and X-ray tube anode and cathode, in the heater chain with power output circuit with also have fixing resonance frequency after the filament transformer circuit is connected, high-frequency high-voltage source circuit and heater chain all are to be connected 11V switch DC voltage stabilizing circuit and VCO and drive circuit respectively by power output circuit wherein, and connecting the AC220V rectification circuit contain noise suppression circuit by power output circuit, the operating frequency of its Voltage-Controlled oscillation circuit is all near above-mentioned two circuit natural resonance frequencies; The secondary output voltage of high frequency high voltage transformer is a sinusoidal waveform high-frequency and high-voltage, and sinusoidal high pressure is added in the voltage-multiplying circuit of back.
2, high frequency and high voltage power supply device for industrial X-ray diagnostic machine according to claim 1, it is characterized in that utilizing resonance effects, improve the design of high-frequency and high-voltage power supply circuit transmission efficient: wherein power output circuit, high frequency high voltage transformer circuit, voltage-multiplying circuit are coupled together; Power output circuit driving transformer twice winding is by resistance (R
1, R
2) link to each other with the grid of field effect transistor (Q1, Q2), field effect transistor (Q1, Q2) and electric capacity (C1) are formed power output circuit; Field effect transistor (Q1) links to each other with the 300V power supply, field effect transistor (Q2) ground connection, connect electric capacity (C1) at field effect transistor (Q1, Q2) source-drain electrode connecting place, electric capacity (C1) other end links to each other with the elementary of high frequency high voltage transformer, the other end ground connection that high frequency high voltage transformer is elementary; At electric capacity (C1) and the elementary connecting place of high frequency high voltage transformer to also being connected between the ground by diode (D1～D3), electric capacity (C3), resistance (R3) and the diode (antihunt circuit that D4～D6), electric capacity (C4) and resistance (R4) are formed; High frequency high voltage transformer secondary with wherein the high-voltage capacitance of voltage-multiplying circuit (C5), kenetron (D7) and high-voltage capacitance (C10) link to each other, kenetron (D7, D8), high-voltage capacitance (C5) other end link to each other with high-voltage capacitance (C6), be connected to high-voltage capacitance (C14) in this way in succession, high-voltage capacitance (C10) and kenetron (D7) junction ground connection and and the X-ray tube anode and cathode between distributed capacitance (C
0) end links to each other distributed capacitance (C
0) other end and high-voltage capacitance (C14), high-voltage diode (D16) junction be connected to form voltage-multiplying circuit.
3, high frequency and high voltage power supply device for industrial X-ray diagnostic machine according to claim 1, the connected mode that it is characterized in that power output circuit and filament transformer circuit in the heater chain: twice level windings of driving transformer link to each other with field effect transistor (Q3, Q4) grid by resistance (R5, R6), field effect transistor (Q3, Q4) source-drain electrode junction links to each other with electric capacity (C15), elementary the linking to each other of high frequency transformer (B2) in the other end of electric capacity (C15) and the filament transformer circuit; (B2) elementary other end ground connection, electric capacity (C16) connects the elementary two ends of high frequency transformer (B2) in the filament transformer circuit, also connects the antihunt circuit of being made up of diode (D17), electric capacity (C17), resistance (R7) and diode (D18), electric capacity (C18), resistance (R8) between the elementary two ends of high frequency transformer (B2); The filament transformer circuit is that three high frequency transformers of being made up of magnet ring (B2, B3, B4) are in series, wherein high frequency transformer (B4) is secondary is to be rectified into direct current by diode (D19, D20), and field effect transistor (Q3, Q4) and electric capacity (C15) are formed power output circuit.
4, high frequency and high voltage power supply device for industrial X-ray diagnostic machine according to claim 1, it is characterized in that noise suppression circuit in the AC220V rectification circuit, behind the bridge rectifier that power supply AC220V two termination diodes (D21-D24) are formed, filter circuit that (C19-C21) form, then serial door circuit are arranged; Gate circuit comprises that an end connects the diode (D25) of power supply, and (C22-C27 and resistance (R9) are formed noise suppression circuit after this to connect electric capacity at both ends of power; Only allow to pass through, and all can't pass through this gate circuit reverse any type of voltage or electric current with equidirectional voltage of diode (D25) or electric current.
5, high frequency and high voltage power supply device for industrial X-ray diagnostic machine according to claim 1, it is characterized in that VCO and drive circuit: the pin (4) of integrated circuit (T), pin (8), transistor (Q5) collector electrode connect the 11V voltage end, and link to each other with the pin (5) of integrated circuit (T) by voltage stabilizing didoe (W1), resistance (R10, R11, R12), the base circuit of transistor (Q5) passes through resistance (R17) and potentiometer (R
W1) centre tap links to each other and connect 11V power supply, potentiometer (R through resistance (R16)
W1) the other end connect resistance (R18) to ground; Electric capacity (C31, C32) is the filter capacitor of transistor (Q5) base circuit, series resistance (R15) therebetween, resistance (R15) links to each other with transistor (Q5) base stage, the pin (6) of integrated circuit (T) links to each other with the pin (7) of integrated circuit (T) through resistance (R14), pin (7) connects 11V voltage through resistance (R13), be connected electric capacity (C28), (C30) respectively, pin (1) series diode (D26, the D27) ground connection of integrated circuit (T) between the pin of integrated circuit T (2), pin (5) and the pin (1); The pin (3) of integrated circuit (T) connects electric capacity (C29) positive pole, electric capacity (C29) negative pole connects the elementary of driving transformer (B5), the elementary other end links to each other with ground, two groups of secondary winding of driving transformer (B5) are around on the contrary, to drive the field effect transistor (Q1, Q2) in the power output circuit in the high-frequency and high-voltage power supply, make its alternate conduction and end the manual or control automatically of realization tube voltage or tube current.
6, high frequency and high voltage power supply device for industrial X-ray diagnostic machine according to claim 1, it is characterized in that having the resonance curve of high-frequency high-voltage source circuit: wherein 25 ± 5kHz is the resonance point of high-frequency high-voltage source circuit, 35～50kHz is the operating frequency of Voltage-Controlled oscillation circuit, adjustable continuously, when frequency is 50kHz, the output voltage minimum, along with reducing of frequency, output voltage increases, when frequency is 35kHz, and the output voltage maximum.
7, high frequency and high voltage power supply device for industrial X-ray diagnostic machine according to claim 1 is characterized in that the resonance curve of heater chain; 45 ± 5kHz is the resonance point of heater chain, and 55～70kHz is the operating frequency of Voltage-Controlled oscillation circuit, and is adjustable continuously, when frequency was 70kHz, the output voltage minimum was along with reducing of operating frequency, output voltage progressively increases, when frequency is 55kHz, and the output voltage maximum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910187355A CN101667785A (en) | 2009-09-15 | 2009-09-15 | High frequency and high voltage power supply device for industrial X-ray diagnostic machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910187355A CN101667785A (en) | 2009-09-15 | 2009-09-15 | High frequency and high voltage power supply device for industrial X-ray diagnostic machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101667785A true CN101667785A (en) | 2010-03-10 |
Family
ID=41804263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910187355A Pending CN101667785A (en) | 2009-09-15 | 2009-09-15 | High frequency and high voltage power supply device for industrial X-ray diagnostic machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101667785A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT512994A1 (en) * | 2012-05-21 | 2013-12-15 | Fachhochschule Technikum Wien | Device for high voltage generation |
| CN105720821A (en) * | 2014-12-02 | 2016-06-29 | 辽宁汉昌高新科技有限公司 | High-frequency high-voltage power supply device for industrial X-ray flaw detector |
| CN106066336A (en) * | 2016-06-12 | 2016-11-02 | 杭州惠威无损探伤设备有限公司 | A kind of reinforced concrete structure x-ray imaging detecting instrument |
| CN108493087A (en) * | 2018-05-30 | 2018-09-04 | 姚智伟 | The Flied emission self-focusing pulsed X-ray generating means of integrated high voltage power supply |
| CN108987222A (en) * | 2018-09-05 | 2018-12-11 | 杭州惠威无损探伤设备有限公司 | A kind of circuit structure of LC resonance X-ray tube filament heating |
-
2009
- 2009-09-15 CN CN200910187355A patent/CN101667785A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT512994A1 (en) * | 2012-05-21 | 2013-12-15 | Fachhochschule Technikum Wien | Device for high voltage generation |
| CN105720821A (en) * | 2014-12-02 | 2016-06-29 | 辽宁汉昌高新科技有限公司 | High-frequency high-voltage power supply device for industrial X-ray flaw detector |
| CN105720821B (en) * | 2014-12-02 | 2018-09-11 | 辽宁汉昌高新科技有限公司 | High frequency and high voltage power supply device for industrial X-ray diagnostic machine |
| CN106066336A (en) * | 2016-06-12 | 2016-11-02 | 杭州惠威无损探伤设备有限公司 | A kind of reinforced concrete structure x-ray imaging detecting instrument |
| CN108493087A (en) * | 2018-05-30 | 2018-09-04 | 姚智伟 | The Flied emission self-focusing pulsed X-ray generating means of integrated high voltage power supply |
| CN108987222A (en) * | 2018-09-05 | 2018-12-11 | 杭州惠威无损探伤设备有限公司 | A kind of circuit structure of LC resonance X-ray tube filament heating |
| CN108987222B (en) * | 2018-09-05 | 2023-10-27 | 杭州惠威无损探伤设备有限公司 | Circuit structure for heating LC resonance X-ray tube lamp wire |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105119391B (en) | A kind of efficient electric energy transmitting terminal and wireless electric energy transmission device | |
| CN105099205B (en) | Switching Power Supply, inverse excitation type converter and transformer | |
| CN106411171A (en) | Transformer-free type low-leakage-current photovoltaic grid-connected inverter circuit with active clamp and modulation method thereof | |
| CN107623436B (en) | PFC power supply device | |
| CN105491728B (en) | Direct filtering type switching power supply | |
| CN101667785A (en) | High frequency and high voltage power supply device for industrial X-ray diagnostic machine | |
| CN204700414U (en) | A kind of electric welding machine circuit of APFC | |
| CN109861538A (en) | A kind of automatic current equalizing circuit in shunt transformer primary side series connection common mode inductance | |
| CN101854122B (en) | High-voltage inverted low-voltage chopped-mode welding power supply | |
| CN207743705U (en) | A kind of Auto-matching resonance based on current transformer takes electric DC source | |
| CN203708109U (en) | LCC resonant converter | |
| CN105811789A (en) | High-efficiency and high-power phase-shifted full-bridge zero-voltage soft switching circuit | |
| CN106452152A (en) | Switch boost type high-gain quasi-Z-source inverter | |
| CN102231606A (en) | Transformerless gird-connected inverter circuit | |
| CN102969903B (en) | Hold-time extension circuit and method for resonant converters | |
| CN101527503A (en) | High-power factor correcting circuit | |
| CN205141847U (en) | Efficient electric energy transmitting terminal and wireless power transmission device | |
| CN208386255U (en) | A kind of wireless electric energy transmission device with constant current output characteristic | |
| CN104393768B (en) | Jensen circuit achieving synchronous rectification | |
| CN208226871U (en) | The main circuit structure of geology transmitter | |
| CN207743874U (en) | A kind of high potential high voltage direct current draw-out power supply device | |
| CN201601603U (en) | High-frequency and high-voltage power supply device for industrial X-ray flaw detector | |
| CN110941915A (en) | Quantitative Analysis Method of Topological Switching Loss and Leakage Inductance of Impedance Source Inverter | |
| CN113992013B (en) | Current source direct current converter and control method | |
| CN206060576U (en) | A kind of high power AC DC transfer circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100310 |