CN212394941U - Combined machine head of X-ray machine - Google Patents
Combined machine head of X-ray machine Download PDFInfo
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- CN212394941U CN212394941U CN202020427098.XU CN202020427098U CN212394941U CN 212394941 U CN212394941 U CN 212394941U CN 202020427098 U CN202020427098 U CN 202020427098U CN 212394941 U CN212394941 U CN 212394941U
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Abstract
The utility model discloses a X-ray machine combination aircraft nose, X-ray machine combination aircraft nose includes control system, X-ray bulb, first transformer, the second transformer, first voltage doubling rectifier circuit, second voltage doubling rectifier circuit, third voltage doubling rectifier circuit and fourth voltage doubling rectifier circuit, the loaded high pressure of positive pole of X-ray bulb is advanced the voltage doubling rectification by the output voltage of the first secondary winding of first transformer and the third secondary winding of second transformer and is obtained, the loaded high pressure of negative pole is carried out the voltage doubling rectification by the output voltage of the second secondary winding of first transformer and the fourth secondary winding of second transformer and is obtained, adopt the cross connection mode to offset basically just that the magnetic element difference that leads to by two high voltage transformers, the unbalanced problem of negative high pressure.
Description
Technical Field
The utility model relates to an X-ray machine field, in particular to X-ray machine combination aircraft nose.
Background
The traditional X-ray machine has the advantages that a high-voltage power supply part and an X-ray bulb tube are separated, along with market requirements and technical development, a movable and portable X-ray machine appears, the X-ray machine has a great development prospect and a great market space, and an X-ray source of a combined machine head is an important component of the movable portable X-ray machine. In the prior art, the high voltage at the two ends of the X-ray bulb tube is usually obtained by boosting and then performing voltage doubling rectification on a positive end high voltage and a negative end high voltage through a high-voltage transformer, and one problem that the high voltages at the two ends are often unbalanced is that the withstand voltages born by high-voltage components in the positive end high voltage and the negative end high voltage are inconsistent, so that the components bearing the withstand voltage are easily broken down and damaged.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an X-ray machine combination aircraft nose can solve the unbalanced problem of bi-polar high pressure.
According to the first aspect of the present invention, an X-ray machine combined head includes a control system, an X-ray bulb, a first transformer, a second transformer, a first voltage doubling rectifier circuit, a second voltage doubling rectifier circuit, a third voltage doubling rectifier circuit and a fourth voltage doubling rectifier circuit, wherein the first transformer includes a first primary winding, a first secondary winding and a second secondary winding, the second transformer includes a second primary winding, a third secondary winding and a fourth secondary winding, an output end of the control system is connected with the first primary winding and the second primary winding respectively, the first secondary winding, the second secondary winding, the third secondary winding and the fourth secondary winding are connected with an input end of the first voltage doubling rectifier circuit, an input end of the second voltage doubling rectifier circuit, an input end of the third voltage doubling rectifier circuit and an input end of the fourth voltage doubling rectifier circuit respectively in a one-to-one correspondence, the superposed voltages of the output voltages of the first voltage doubling rectifying circuit and the third voltage doubling rectifying circuit are loaded on the anode of the X-ray bulb tube, and the superposed voltages of the output voltages of the second voltage doubling rectifying circuit and the fourth voltage doubling rectifying circuit are loaded on the cathode of the X-ray bulb tube.
According to the utility model discloses X-ray machine combination aircraft nose has following beneficial effect at least: the utility model discloses the loaded high pressure of positive pole of X ray bulb advances the voltage doubling rectification by the output voltage of the first secondary winding of first transformer and the third secondary winding of second transformer and obtains, and the loaded high pressure of negative pole is carried out the voltage doubling rectification by the output voltage of the second secondary winding of first transformer and the fourth secondary winding of second transformer and is obtained, adopts the cross connection mode to offset basically just, the unbalanced problem of negative high pressure that leads to by two high voltage transformers's magnetic element difference.
According to some embodiments of the present invention, the first voltage doubling rectifying circuit includes a capacitor C1, a capacitor C2, a capacitor C9, a capacitor C10, a diode D1, a diode D2, a diode D3 and a diode D4, the diode D4, the diode D3, the diode D2 and the diode D1 are sequentially connected in a forward direction, one end of the capacitor C1 is connected to a node between the diode D1 and the diode D2, the other end of the capacitor C1 is connected to one end of the capacitor C2, the other end of the capacitor C2 is connected to a node between the diode D3 and the diode D4, one end of the capacitor C9 is connected to a cathode of the diode D1 and an anode of an X-ray bulb, the other end of the capacitor C9 is connected to one end of the capacitor C10, the other end of the capacitor C10 is connected to an anode of the diode D4, one end of the first secondary winding is connected to a node between the capacitor C1 and the capacitor C2, the other end of the first secondary winding is connected with a node between the diode D2 and the diode D3 and a node between the capacitor C9 and the capacitor C10 respectively.
According to some embodiments of the present invention, the third voltage-tripling rectification circuit includes a capacitor C3, a capacitor C4, a capacitor C11, a capacitor C12, a diode D5, a diode D6, a diode D7, and a diode D8, the diode D8, the diode D7, the diode D6, and the diode D5 are sequentially connected in a forward direction, one end of the capacitor C3 is connected to a node between the diode D5 and the diode D6, the other end of the capacitor C3 is connected to one end of the capacitor C4, the other end of the capacitor C4 is connected to a node between the diode D7 and the diode D8, one end of the capacitor C11 is connected to a cathode of the diode D5 and the other end of the capacitor C10, the other end of the capacitor C11 is connected to one end of the capacitor C12, the other end of the capacitor C12 is connected to an anode of the diode D8, one end of the third secondary winding is connected to a node between the capacitor C3 and a node 4, the other end of the third secondary winding is connected with a node between the diode D6 and the diode D7 and a node between the capacitor C11 and the capacitor C12 respectively.
According to some embodiments of the present invention, the second voltage-multiplying current-rectifying circuit includes a capacitor C5, a capacitor C6, a capacitor C13, a capacitor C14, a diode D9, a diode D10, a diode D11, and a diode D12, the diode D12, the diode D11, the diode D10, and the diode D9 are sequentially connected in a forward direction, one end of the capacitor C5 and a node between the diode D9 and the diode D10 are connected, the other end of the capacitor C5 and one end of the capacitor C6 are connected, the other end of the capacitor C6 and a node between the diode D11 and the diode D12 are connected, one end of the capacitor C13 is respectively connected to a negative electrode of the diode D9, the other end of the capacitor C13 and one end of the capacitor C14 are connected, the other end of the capacitor C14 and a positive electrode of the diode D12 are connected, one end of the second secondary winding and a node between the capacitor C5 and the capacitor C6 are connected, the other end of the second secondary winding is connected with a node between the diode D10 and the diode D11 and a node between the capacitor C13 and the capacitor C14 respectively.
According to some embodiments of the present invention, the quadruple voltage rectifying circuit includes a capacitor C7, a capacitor C8, a capacitor C15, a capacitor C16, a diode D13, a diode D14, a diode D15 and a diode D16, the diode D16, the diode D15, the diode D14 and the diode D13 are sequentially connected in a forward direction, one end of the capacitor C7 is connected to a node between the diode D13 and the diode D14, the other end of the capacitor C7 is connected to one end of the capacitor C8, the other end of the capacitor C8 is connected to a node between the diode D15 and the diode D16, one end of the capacitor C15 is connected to a cathode of the diode D13 and another end of the capacitor C14, the other end of the capacitor C15 is connected to one end of the capacitor C16, the other end of the capacitor C16 is connected to an anode of the diode D16 and a cathode of the X-ray tube, one end of the fourth secondary winding is connected with a node between the capacitor C7 and the capacitor C8, and the other end of the fourth secondary winding is respectively connected with a node between the diode D14 and the diode D15 and a node between the capacitor C15 and the capacitor C16.
According to some embodiments of the utility model, still include anode voltage sampling circuit and cathode voltage sampling circuit, anode voltage sampling circuit's input with the positive pole of X ray bulb is connected, anode voltage sampling circuit's output with control system connects, cathode voltage sampling circuit's input with the negative pole of X ray bulb is connected, anode voltage sampling circuit's output with control system connects.
According to some embodiments of the utility model, still include filament driving transformer, filament driving transformer's input with control system connects, filament driving transformer's output with the negative pole of X ray bulb is connected.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a block diagram of the X-ray machine combined head according to the embodiment of the present invention;
FIG. 2 is a schematic circuit diagram of an X-ray machine combined head according to an embodiment of the present invention;
fig. 3 is a current charging path diagram of a capacitor C1 in the first voltage-doubling rectifying circuit according to the embodiment of the present invention;
fig. 4 is a current charging path diagram of the capacitor C2 in the first voltage-doubling rectifying circuit according to the embodiment of the present invention;
fig. 5 is a current charging path diagram of the capacitor C10 in the first voltage-doubling rectifying circuit according to the embodiment of the present invention;
fig. 6 is a current charging path diagram of the capacitor C9 in the first voltage-doubling rectifying circuit according to the embodiment of the present invention;
fig. 7 is a schematic diagram of the voltage-doubling principle of the first voltage-doubling rectifying circuit in the embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
Referring to fig. 1 and 2, an X-ray machine combined handpiece comprises a control system 1, an X-ray bulb 6, a first transformer 2, a second transformer 7, a first voltage doubling rectifying circuit 4, a second voltage doubling rectifying circuit 8, a third voltage doubling rectifying circuit 10 and a fourth voltage rectifying circuit 11, wherein the first transformer 2 comprises a first primary winding, a first secondary winding and a second secondary winding, the second transformer 7 comprises a second primary winding, a third secondary winding and a fourth secondary winding, an output end of the control system 1 is respectively connected with the first primary winding and the second primary winding, the first secondary winding, the second secondary winding, the third secondary winding and the fourth secondary winding are respectively connected with an input end of the first voltage doubling rectifying circuit 4, an input end of the second voltage doubling rectifying circuit 8, an input end of the third voltage doubling rectifying circuit 10 and an input end of the fourth voltage rectifying circuit 11 in a one-to-one correspondence manner, the superposed voltages of the output voltages of the first voltage doubling rectifying circuit 4 and the third voltage doubling rectifying circuit 10 are loaded on the anode of the X-ray bulb tube 6, and the superposed voltages of the output voltages of the second voltage doubling rectifying circuit 8 and the fourth voltage doubling rectifying circuit 11 are loaded on the cathode of the X-ray bulb tube 6. The first transformer 2 and the second transformer 7 isolate the high-frequency alternating voltage output by the control system 1 through inversion, the first voltage doubling rectifying circuit 4 and the third voltage doubling rectifying circuit 10 respectively further boost, rectify and filter the output voltage of the first secondary winding of the first transformer 2 and the third secondary winding of the second transformer 7 and add the output voltage to the anode of the X-ray bulb tube 6, and the second voltage doubling rectifying circuit 8 and the fourth voltage doubling rectifying circuit 11 respectively further boost, rectify and filter the output voltage of the second secondary winding of the first transformer 2 and the fourth secondary winding of the second transformer 7 and add the output voltage to the cathode of the X-ray bulb tube 6. An X-ray tube 6 is used for generating radiation.
In the high-frequency high-voltage generator of the X-ray machine, the prior art generally obtains positive terminal high voltage and negative terminal high voltage by respectively performing voltage doubling rectification after boosting by a high-voltage transformer, so that a problem that double terminal high voltage often has is unbalanced positive and negative high voltage, which causes inconsistent withstand voltage born by high-voltage components in the positive terminal high voltage and the negative terminal high voltage, thereby easily breaking down the components bearing high withstand voltage to damage, and causing the problem of the consistency of magnetic elements of the positive terminal high-voltage transformer and the negative terminal high-voltage transformer as the root cause of the unbalanced problem of the positive and negative high voltages. In some designs, only one transformer is used, with both secondary windings of the transformer loaded to the cathode and anode, respectively, which also counteracts the problem of imbalance between the positive and negative high voltages caused by the difference in magnetic elements of the two high voltage transformers but the voltage cannot be raised to the desired value. The utility model discloses the loaded high pressure of positive pole of X ray bulb 6 advances the voltage doubling rectification by the output voltage of the first secondary winding of first transformer 2 and the third secondary winding of second transformer 7 and obtains, the loaded high pressure of negative pole is carried out the voltage doubling rectification by the output voltage of the second secondary winding of first transformer 2 and the fourth secondary winding of second transformer 7 and is obtained, adopt the cross connection mode to offset basically just, the unbalanced problem of burden high pressure that leads to by two high-voltage transformer's magnetic element difference.
In the embodiment of the present invention, the first voltage doubling rectifying circuit 4 includes a capacitor C1, a capacitor C2, a capacitor C9, a capacitor C10, a diode D1, a diode D2, a diode D3 and a diode D4, the diode D4, the diode D3, the diode D2 and the diode D1 are sequentially connected in a forward direction, one end of the capacitor C1 is connected to a node between the diode D1 and the diode D2, the other end of the capacitor C1 is connected to one end of the capacitor C2, the other end of the capacitor C2 is connected to a node between the diode D3 and the diode D4, one end of the capacitor C9 is connected to a cathode of the diode D1 and an anode of the X-ray bulb 6, the other end of the capacitor C9 is connected to one end of the capacitor C10, the other end of the capacitor C10 is connected to an anode of the diode D4, one end of the first secondary winding is connected to a node between the capacitor C1 and the capacitor C2, the other end of the first secondary winding is connected with a node between the diode D2 and the diode D3 and a node between the capacitor C9 and the capacitor C10 respectively.
In the embodiment of the present invention, the third voltage-tripling rectification circuit 10 includes a capacitor C3, a capacitor C4, a capacitor C11, a capacitor C12, a diode D5, a diode D6, a diode D7, and a diode D8, the diode D8, the diode D7, the diode D6, and the diode D5 are sequentially connected in a forward direction, one end of the capacitor C3 is connected to a node between the diode D3 and the diode D3, the other end of the capacitor C3 is connected to one end of the capacitor C3, the other end of the capacitor C3 is connected to a node between the diode D3 and the diode D3, one end of the capacitor C3 is respectively connected to a negative electrode of the diode D3 and the other end of the capacitor C3, the other end of the capacitor C3 is connected to one end of the capacitor C3, the other end of the capacitor C3 is connected to a positive electrode of the diode D3, one end of the third secondary winding is connected to a node between the capacitor C3 and the capacitor C3, the other end of the third secondary winding is connected with a node between the diode D6 and the diode D7 and a node between the capacitor C11 and the capacitor C12 respectively.
In the embodiment of the present invention, the second voltage doubling rectifying circuit 8 includes a capacitor C5, a capacitor C6, a capacitor C13, a capacitor C14, a diode D9, a diode D10, a diode D11, and a diode D12, the diode D12, the diode D11, the diode D10, and the diode D9 are connected in series in the forward direction, one end of the capacitor C5 is connected to a node between the diode D9 and the diode D10, the other end of the capacitor C5 is connected to one end of the capacitor C6, the other end of the capacitor C6 is connected to a node between the diode D11 and the diode D12, one end of the capacitor C13 is connected to the negative electrode of the diode D9, the other end of the capacitor C13 is connected to one end of the capacitor C14, the other end of the capacitor C14 is connected to the positive electrode of the diode D12, one end of the second secondary winding is connected to a node between the capacitor C5 and the capacitor C6, the other end of the second secondary winding is connected with a node between the diode D10 and the diode D11 and a node between the capacitor C13 and the capacitor C14 respectively.
In the embodiment of the present invention, the fourth voltage rectifying circuit 11 includes a capacitor C7, a capacitor C8, a capacitor C15, a capacitor C16, a diode D13, a diode D14, a diode D15, and a diode D16, the diode D16, the diode D15, the diode D14, and the diode D13 are sequentially connected in a forward direction, one end of the capacitor C7 is connected to a node between the diode D7 and the diode D7, the other end of the capacitor C7 is connected to one end of the capacitor C7, the other end of the capacitor C7 is connected to a node between the diode D7 and the diode D7, one end of the capacitor C7 is respectively connected to a negative electrode of the diode D7 and the other end of the capacitor C7, the other end of the capacitor C7 is connected to one end of the capacitor C7, the other end of the capacitor C7 is respectively connected to a positive electrode of the diode D7 and a cathode of the X-ray bulb 6, one end of the first stage is connected to a node 7 of the capacitor C7, the other end of the fourth secondary winding is respectively connected with a node between the diode D14 and the diode D15 and a node between the capacitor C15 and the capacitor C16.
The voltage-doubler rectification principle is explained below with reference to the drawings.
Taking the first voltage-doubling rectifying circuit 4 as an example, the working principle is as follows:
when the current is in the negative half cycle, the diode D2 is turned on, the other diodes are turned off, the capacitor C1 is charged to Vs through the first secondary winding N2 and the diode D2, the current path of which and the polarity of the voltage across the capacitor C1 are as shown in fig. 3;
in the positive half cycle, the diode D3 is turned on, the other diodes are turned off, the capacitor C2 is charged to Vs through the first secondary winding N2 and the diode D3, and the current path and the polarity of the voltage across the capacitor C2 are as shown in fig. 4;
in the negative half cycle, the diode D4 is turned on, the other diodes are turned off, the capacitor C10 is charged to 2Vs through the first secondary winding N2, the capacitor C2 and the diode D4, and the current path and the polarity of the voltage across the capacitor C10 are as shown in fig. 5;
in the positive half cycle, the diode D1 is turned on, the other diodes are turned off, the capacitor C9 is charged to 2Vs through the first secondary winding N2, the capacitor C1 and the diode D1, and the current path and the polarity of the voltage across the capacitor C10 are as shown in fig. 6;
the sum of the voltage sums across the capacitors C9, C10 is 4Vs, i.e. 4 times the output voltage of the first secondary winding N2 of the first transformer 2, as shown in fig. 7.
Similarly, in the second voltage-multiplying and current-regulating circuit 8, the sum of the voltage superposition at the two ends of C11 and C12 is 4Vs, that is, 4 times of the output voltage of the third secondary winding;
similarly, in the third voltage-tripling rectification circuit 10, the sum of the voltage superposition at the two ends of C13 and C14 is 4Vs, that is, 4 times of the output voltage of the second secondary winding;
similarly, in the fourth voltage-regulating circuit 11, the sum of the voltage superposition at the two ends of C15 and C16 is 4Vs, that is, 4 times of the output voltage of the fourth secondary winding;
after voltage doubling rectification, HV + is formed by voltage superposition on capacitors C9, C10, C11 and C12, and is added to the anode of the X-ray bulb tube 6; HV-is formed by the superposition of the voltages on C13, C14, C15 and C16, and is added to the cathode of the X-ray tube 6. The cathode and the anode of the X-ray bulb tube 6 generate a strong electric field under the action of HV + and HV-high voltage, and the electric field acts on electrons generated by heating the cathode filament, so that the electrons bombard the anode target surface of the X-ray bulb tube 6 to generate X-rays. The heating of the filament is isolated by the filament driving voltage through the filament driving transformer 5T3 and T4 and then added to the bulb cathode filament, and the filament transformer is mainly used for isolating and boosting the high-frequency alternating voltage output by the inversion of the control system 1. It is understood that the amplification factors of the first voltage doubling rectifying circuit 4, the second voltage doubling rectifying circuit 8, the third voltage doubling rectifying circuit 10 and the fourth voltage doubling rectifying circuit 11 may be other factors, and the present embodiment is only one example, and the amplification factor may also be 2 times, 3 times, and the like.
Further referring to fig. 2, the X-ray machine combined head further includes an anode voltage sampling circuit 3 and a cathode voltage sampling circuit 9, the anode voltage sampling circuit 3 and the cathode voltage sampling circuit 9 respectively convert high voltage signals of the cathode and the anode of the bulb into low voltage signals through voltage division and transmit the low voltage signals to the control system 1 for detection, the input end of the anode voltage sampling circuit 3 is connected with the anode of the X-ray bulb 6, the output end of the anode voltage sampling circuit 3 is connected with the control system 1, the input end of the cathode voltage sampling circuit 9 is connected with the cathode of the X-ray bulb 6, and the output end of the anode voltage sampling circuit 3 is connected with the control system 1. The cathode and anode voltage sampling circuit 3 is obtained by adopting a resistor-capacitor network voltage division mode, the anode resistor-capacitor voltage division network is formed by connecting 16 resistors R5, R7-R21, capacitors C17 and C19-C33 in series-parallel and connecting 16 capacitors in series-parallel, and the cathode resistor-capacitor voltage division network is formed by connecting resistors R6, R22-R36, capacitors C18 and C34-C48 in series-parallel and connecting 16 resistors and 16 capacitors in series-parallel. The sampled voltage value KV + of the positive terminal high voltage is the voltage at the two ends of the resistor R5, the sampled voltage value KV-of the negative terminal high voltage is the voltage at the two ends of the resistor R6, and the sampled voltage is transmitted to the control system 1. Further, the sampling of the cathode current and the anode current is realized by resistors R1 and R2 respectively, and corresponding current values are obtained by acquiring the voltages on R1 and R2 and then by ohm's law.
The control system 1 adopts an MCU (micro controller Unit), also called a Single Chip Microcomputer (SCM) or a Single Chip Microcomputer, which properly reduces the frequency and specification of a Central Processing Unit (CPU), and integrates peripheral interfaces such as a memory, a counter (Timer), a USB (universal serial bus), an A/D (analog/digital) converter, a UART (universal asynchronous receiver transmitter), a PLC (programmable logic controller), a DMA (direct memory access) and the like, even an LCD (liquid crystal display) driving circuit on a Single Chip to form a Chip-level computer, thereby performing different combination control for different application occasions. Specifically, in the embodiment, the STM32F103VET6 chip is adopted to form the control system 1, which provides input control signals for the X-ray machine combined machine head, including filament control and output, rotating anode control and output, inversion control and output, high voltage detection, closed-loop control, and the like.
Claims (7)
1. The utility model provides an X ray machine combination aircraft nose which characterized in that: the X-ray tube voltage-multiplying rectification circuit comprises a control system (1), an X-ray tube (6), a first transformer (2), a second transformer (7), a first voltage-multiplying rectification circuit (4), a second voltage-multiplying rectification circuit (8), a third voltage-multiplying rectification circuit (10) and a fourth voltage-multiplying rectification circuit (11), wherein the first transformer (2) comprises a first primary winding, a first secondary winding and a second secondary winding, the second transformer (7) comprises a second primary winding, a third secondary winding and a fourth secondary winding, the output end of the control system (1) is respectively connected with the first primary winding and the second primary winding, the first secondary winding, the second secondary winding, the third secondary winding and the fourth secondary winding are respectively connected with the input end of the first voltage-multiplying rectification circuit (4), the input end of the second voltage-multiplying rectification circuit (8), the input end of the third voltage-multiplying rectification circuit (10) and the input end of the fourth voltage-rectification circuit (11) in a one-to-one correspondence manner, the superposed output voltages of the first voltage doubling rectifying circuit (4) and the third voltage doubling rectifying circuit (10) are loaded on the anode of the X-ray bulb tube (6), and the superposed output voltages of the second voltage doubling rectifying circuit (8) and the fourth voltage doubling rectifying circuit (11) are loaded on the cathode of the X-ray bulb tube (6).
2. The X-ray machine head as set forth in claim 1, wherein: the first voltage doubling rectifying circuit (4) comprises a capacitor C1, a capacitor C2, a capacitor C9, a capacitor C10, a diode D1, a diode D2, a diode D3 and a diode D4, the diode D4, a diode D3, a diode D2 and a diode D1 are sequentially connected in series in the forward direction, one end of the capacitor C1 is connected with a node between the diode D1 and the diode D2, the other end of the capacitor C1 is connected with one end of the capacitor C2, the other end of the capacitor C2 is connected with a node between the diode D3 and the diode D4, one end of the capacitor C9 is respectively connected with the cathode of the diode D1 and the anode of the X-ray bulb (6), the other end of the capacitor C9 is connected with one end of the capacitor C10, the other end of the capacitor C10 is connected with the anode of the diode D4, one end of the first secondary winding is connected with a node between the capacitor C1 and the capacitor C2, the other end of the first secondary winding is connected with a node between the diode D2 and the diode D3 and a node between the capacitor C9 and the capacitor C10 respectively.
3. The X-ray machine head as set forth in claim 2, wherein: the third voltage-multiplying rectifying circuit (10) comprises a capacitor C3, a capacitor C4, a capacitor C11, a capacitor C12, a diode D5, a diode D6, a diode D7 and a diode D8, the diode D8, the diode D7, the diode D6 and the diode D5 are sequentially connected in series in the forward direction, one end of the capacitor C3 is connected with a node between the diode D3 and the diode D3, the other end of the capacitor C3 is connected with one end of the capacitor C3, the other end of the capacitor C3 is connected with a node between the diode D3 and the diode D3, one end of the capacitor C3 is respectively connected with the cathode of the diode D3 and the other end of the capacitor C3, the other end of the capacitor C3 is connected with one end of the capacitor C3, the other end of the capacitor C3 is connected with the anode of the diode D3, one end of the third secondary winding is connected with a node 3 between the capacitor C3 and the capacitor C3, the other end of the third secondary winding is connected with a node between the diode D6 and the diode D7 and a node between the capacitor C11 and the capacitor C12 respectively.
4. An X-ray machine head as set forth in claim 1 or 3, characterized in that: the second voltage-multiplying and current-rectifying circuit (8) comprises a capacitor C5, a capacitor C6, a capacitor C13, a capacitor C14, a diode D9, a diode D10, a diode D11 and a diode D11, wherein the diode D11, the diode D11 and the diode D11 are sequentially connected in series in a forward direction, one end of the capacitor C11 is connected with a node between the diode D11 and the diode D11, the other end of the capacitor C11 is connected with one end of the capacitor C11, the other end of the capacitor C11 is connected with a node between the diode D11 and the diode D11, one end of the capacitor C11 is respectively connected with a cathode of the diode D11, the other end of the capacitor C11 is connected with an anode of the capacitor C11, one end of the second secondary winding is connected with a node between the capacitor C11 and the capacitor C11, and the other end of the second secondary winding is connected with a node between the diode D11 and a node between the diode D11 and the diode D11 The node between the capacitors C14 is connected.
5. The X-ray machine head as set forth in claim 4, wherein: the fourth voltage rectifying circuit (11) comprises a capacitor C7, a capacitor C8, a capacitor C15, a capacitor C16, a diode D13, a diode D14, a diode D15 and a diode D16, the diode D16, a diode D15, a diode D14 and a diode D13 are sequentially connected in series in the forward direction, one end of the capacitor C7 is connected with a node between the diode D13 and the diode D14, the other end of the capacitor C7 is connected with one end of the capacitor C8, the other end of the capacitor C8 is connected with a node between the diode D15 and the diode D16, one end of the capacitor C15 is respectively connected with the cathode of the diode D13 and the other end of the capacitor C14, the other end of the capacitor C15 is connected with one end of the capacitor C16, the other end of the capacitor C16 is respectively connected with the anode of the diode 16 and the cathode of the X-ray bulb (6) winding, one end of the fourth voltage rectifying circuit is connected with a node 7 between the capacitor C8 and the capacitor C7, the other end of the fourth secondary winding is respectively connected with a node between the diode D14 and the diode D15 and a node between the capacitor C15 and the capacitor C16.
6. The X-ray machine head as set forth in claim 1, wherein: still include anode voltage sampling circuit (3) and cathode voltage sampling circuit (9), the input of anode voltage sampling circuit (3) with the positive pole of X ray bulb (6) is connected, the output of anode voltage sampling circuit (3) with control system (1) is connected, the input of cathode voltage sampling circuit (9) with the negative pole of X ray bulb (6) is connected, the output of anode voltage sampling circuit (3) with control system (1) is connected.
7. The X-ray machine head as set forth in claim 1, wherein: the filament driving device is characterized by further comprising a filament driving transformer (5), wherein the input end of the filament driving transformer (5) is connected with the control system (1), and the output end of the filament driving transformer (5) is connected with the cathode of the X-ray bulb tube (6).
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| CN202020427098.XU CN212394941U (en) | 2020-03-27 | 2020-03-27 | Combined machine head of X-ray machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111329502A (en) * | 2020-03-27 | 2020-06-26 | 珠海市睿影科技有限公司 | Combined machine head of X-ray machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111329502A (en) * | 2020-03-27 | 2020-06-26 | 珠海市睿影科技有限公司 | Combined machine head of X-ray machine |
| CN111329502B (en) * | 2020-03-27 | 2024-08-13 | 珠海市睿影科技有限公司 | Combined machine head of X-ray machine |
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