Detection device for Philips DR high-pressure oil tank

Abstract

The utility model belongs to the technical field of Philips DR machines, and particularly relates to a detection device for a Philips DR high-voltage oil tank, which comprises a high-voltage oil tank, a dry battery pack and a boosting transformer primary arranged on the high-voltage oil tank, wherein an input connecting wire of an inverter, a filament primary connecting wire and a high-voltage cable connecting wire are removed from the high-voltage oil tank; the contact is in contact with a 1001 connector and a 1003 connector of the high-pressure oil tank or in contact with a 1002 connector and a 1004 connector of the high-pressure oil tank; a probe of the oscilloscope is respectively connected to an HTAN feedback test point and an HTCA feedback test point of the high-pressure oil tank; a probe, connected with the HTAN feedback test point, of the oscilloscope is triggered by a rising edge, and the trigger voltage is 50mV. Whether the high-pressure oil tank is normal or not can be accurately judged, the judgment accuracy and the working efficiency can be improved, and the high-pressure oil tank detection device has good market application prospects.

Description

Technical Field

[0001] This utility model belongs to the field of Philips DR machine technology, specifically relating to a detection device for Philips DR high-pressure oil tank. Background Technology

[0002] Digital radiography (DR) machines are advanced X-ray imaging devices that combine digital image processing technology with X-ray radiography technology. Based on the direct film imaging of traditional diagnostic X-ray machines, they perform real-time digital image processing through A / D conversion and D / A conversion, thereby digitizing the images.

[0003] Philips DR (Digital Radiography) machines are a type of digital X-ray imaging device, and are among the most advanced radiographic equipment, characterized by high sensitivity, high resolution, and stable performance. Compared to ordinary X-ray machines, DR machines offer advantages such as lower radiation dose, faster imaging speed, higher image clarity, and better sharpness. They can clearly display minute lesions, improving the detection and diagnostic rates of lesions and providing accurate diagnostic information for clinical practice.

[0004] A Philips DR (Digital Radiography) machine typically consists of components such as an X-ray tube hanger, examination bed, chest X-ray frame, high-voltage generator, and acquisition workstation. The X-ray tube hanger includes a ceiling track, suspension frame, X-ray tube, and beam locator. Under external force, the hanger can be moved to align with the examination bed or chest X-ray frame; the X-ray tube can also move up and down or rotate. The examination bed includes a base, bed surface, and detectors. The bed can be lowered so the patient can lie down, raised to a designated position, or the bed surface can be moved to align the X-ray tube with the area to be examined. The chest X-ray frame includes a column, detectors, and detector fixing devices. The detectors can be raised or lowered to position them behind the area to be examined, allowing the patient to stand in front of the frame. The high-voltage generator includes a high-voltage control unit, inverter, and high-voltage oil tank. This is the core component for X-ray generation, playing a crucial role in X-ray production and directly affecting the overall performance stability of the DR equipment. The acquisition workstation, assembled from a computer and related control software, serves as the system control platform, image processing platform, and patient data management platform.

[0005] The high-voltage generator is the core component of a Philips DR machine, typically consisting of a high-voltage control unit, a power distribution unit, an inverter, and a high-voltage tank. The high-voltage control unit is the heart of the generator; it receives external commands, processes them, and distributes the specified kilovolts and milliamps to other units within the generator. It also processes feedback signals from each unit to form a closed-loop control system. The inverter is another crucial component, primarily rectifying the input three-phase 400V AC power into 560V DC power. Under the control of the high-voltage control section, pulse waveforms trigger the inverter's IGBTs or high-power MOSFETs to switch on and off, converting the DC power into high-frequency AC power above 10 kHz, which is then input into the high-voltage tank. The high-voltage tank takes the power input from the inverter, first steps it up with a step-up transformer, then rectifies and multiplies it to 40-150 kV, which is then transmitted to the X-ray tube via cathode and anode high-voltage cables.

[0006] Because the high-voltage generator of a DR machine produces 40-150 kV high voltage, it cannot be measured with a regular multimeter. Furthermore, DR machine exposures are instantaneous, typically on the order of milliseconds. These extremely short exposure times mean that the digital multimeters commonly used by engineers cannot capture these waveform signals, making it impossible to determine if there is a problem with the high-voltage oil tank inside the high-voltage generator. Even if an oscilloscope is available on-site, it requires a high level of skill from the on-site maintenance personnel, and the testing time is relatively long.

[0007] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0008] The purpose of this invention is to provide a detection device for the Philips DR high-pressure oil tank, in order to solve the problem of difficulty in accurately determining whether the high-pressure oil tank is functioning properly.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] The testing device for the Philips DR high-pressure oil tank includes:

[0011] Disconnect the inverter's input wiring, filament primary wiring, and high-voltage cable wiring from the high-voltage oil tank.

[0012] The dry cell battery pack is located on the primary side of the step-up transformer of the high-voltage oil tank, and is in contact with the 1001 and 1003 terminals of the high-voltage oil tank or with the 1002 and 1004 terminals of the high-voltage oil tank.

[0013] An oscilloscope, with its probes connected to the HTAN and HTCA feedback test points of the high-pressure oil tank respectively; the oscilloscope probe connected to the HTAN feedback test point is triggered on the rising edge, with a trigger voltage of 50mV.

[0014] Preferably, the dry cell battery pack uses 1.5V dry cell batteries.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The Philips DR high-voltage oil tank fault detection device of this utility model disconnects all the wiring of the high-voltage oil tank of the DR machine, disconnects the high-voltage oil tank from the original circuit, and can accurately determine whether the high-voltage oil tank is normal, thereby improving the accuracy of judgment and work efficiency.

[0017] (2) The Philips DR high-pressure oil tank fault detection device of this utility model has the characteristics of low cost, the detection components can be purchased on site, the detection method is simple, easy to learn and use, the detection is intuitive, safe and efficient.

[0018] (3) The Philips DR high-pressure oil tank fault detection device of this utility model is highly versatile. In addition to detecting the high-pressure oil tank of Philips DR, it can also detect the high-pressure oil tank of other brands of DR. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the high-pressure oil tank.

[0020] Figure 2 These are valid balanced waveforms acquired at the HTAN and HTCA test points;

[0021] Figure 3 The unbalanced waveforms were collected at the HTAN and HTCA test points. Detailed Implementation

[0022] The technical solution of this utility model patent will be clearly and completely described below. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] The high-voltage generator in a Philips DR machine is a relatively easy component to fail. Common high-voltage faults include the rotating anode of the X-ray tube not rotating, the filament current of the X-ray tube exceeding the range, and the kilovolt (kV) exceeding the range. A kV exceeding the range usually manifests as a discrepancy between the actual kV output and the preset kV; exceeding the allowable range by 20% will trigger an error and shut down the exposure. kV errors during exposure are usually related to the high-voltage inverter, high-voltage oil tank, high-voltage cables, and X-ray tube. There are quick troubleshooting methods for the inverter and high-voltage cables. However, due to the special structure of the high-voltage oil tank, the circuit components are immersed in insulating oil for insulation, making it impossible to disassemble and measure the circuitry. Furthermore, because the kV control is closed-loop, any problem will trigger a protection shutdown during the very short exposure and shutdown times, making it difficult to pinpoint the faulty component.

[0026] To troubleshoot a kilovolt fault, you can remove the suspected faulty component from the original closed-loop control circuit and test the suspected faulty component separately. This can eliminate the influence of the original circuit and confirm the fault more definitively.

[0027] Appendix Figure 1The diagram shows the schematic of a high-voltage oil tank. If a pulse voltage is applied to the primary input of the high-voltage oil tank, two opposite balanced waveforms will be obtained at HTAN (anode kilovolt feedback voltage test point) and HTCA (cathode kilovolt feedback voltage test point). If neither waveform can be acquired, or only one waveform can be acquired, then the high-voltage oil tank is faulty. If both waveforms can be acquired, but they are unbalanced, then the high-voltage oil tank is also faulty. Only when two waveforms with equal amplitude and opposite waveforms are acquired can the high-voltage oil tank be confirmed to be functioning correctly. This allows the high-voltage oil tank to be disconnected from its original circuit, enabling accurate determination of its functionality and improving diagnostic accuracy and work efficiency.

[0028] This utility model discloses a Philips DR high-voltage oil tank fault detection device, comprising: a high-voltage oil tank, an oscilloscope, and a dry battery pack. Specifically, all wiring to the DR unit's high-voltage oil tank is disconnected, including the inverter's input wiring, the filament primary wiring, and the high-voltage cable wiring, effectively isolating the high-voltage oil tank.

[0029] The oscilloscope probes were connected to the HTAN (anode kilovolt feedback voltage test point) and HTCA (cathode kilovolt feedback voltage test point) feedback test points on the high-voltage oil tank, respectively. The oscilloscope time was set to 500 milliseconds per division, and the oscilloscope probe amplitude was set to 50 millivolts per division. The probe connected to the HTAN test point was used as the trigger, set to rise-edge trigger, and the trigger voltage was 50 millivolts.

[0030] The dry cell battery pack uses 1.5V dry cell batteries and is placed on the primary side of the step-up transformer in the high-voltage oil tank. It is intermittently touched to terminals 1001 and 1003, or terminals 1002 and 1004, in the high-voltage oil tank. A valid and balanced waveform can be observed at the HTAN and HTCA test points using an oscilloscope, as shown in the attached diagram. Figure 2 As shown.

[0031] If the high-pressure oil tank malfunctions, neither oscilloscope probe will be able to acquire waveforms at the HTAN and HTCA test points, or only one probe will acquire a normal waveform while the other will not. For example, see attached... Figure 3 The waveform shown is captured from both the anode and cathode, but the waveform at the anode is smaller than that at the cathode, indicating an abnormal feedback voltage at the anode and a fault in the anode circuit. Since the anode is faulty while the cathode of the high-voltage oil tank is normal, the high-voltage oil tank is confirmed to be faulty and needs to be replaced.

[0032] This utility model of the Philips DR high-pressure oil tank fault detection device can quickly and conveniently determine whether the high-pressure oil tank has output and whether the output waveform is balanced without being connected to the high-pressure generator. It can quickly determine whether the high-pressure oil tank is faulty, improve the efficiency and accuracy of detection, and is very practical with good market application prospects.

[0033] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A testing device for Philips DR high-pressure oil tanks, characterized in that, include: Disconnect the inverter's input wiring, filament primary wiring, and high-voltage cable wiring from the high-voltage oil tank. The dry cell battery pack is located on the primary side of the step-up transformer of the high-voltage oil tank, and is in contact with the 1001 and 1003 terminals of the high-voltage oil tank or with the 1002 and 1004 terminals of the high-voltage oil tank. An oscilloscope, with its probes connected to the HTAN and HTCA feedback test points of the high-pressure oil tank respectively; the oscilloscope probe connected to the HTAN feedback test point is triggered on the rising edge, with a trigger voltage of 50mV.

2. The detection device for the Philips DR high-pressure oil tank according to claim 1, characterized in that, The dry cell battery pack uses 1.5V dry cell batteries.

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