A DC high voltage power supply measurement device and method

Abstract

The present invention discloses a DC high-voltage power supply measuring device and a measuring method. The measuring device comprises a shell, wherein a baffle is provided in the inner cavity of the shell to separate the inner cavity of the shell into a power supply chamber, an access chamber, an isolation chamber and a sampling chamber; a power supply circuit module is provided in the power supply chamber for providing DC power; a high-voltage terminal is provided in the access chamber to be electrically connected to the output end of the high-voltage power supply to be measured; an isolation circuit module is provided in the isolation chamber, the isolation circuit module is electrically connected to the power supply circuit module, and the input end of the isolation circuit module is electrically connected to the high-voltage terminal; a sampling circuit module is provided in the sampling chamber, the sampling circuit module is electrically connected to the power supply circuit module, and the input end of the sampling circuit module is electrically connected to the output end of the isolation circuit module, and the output end of the sampling circuit module is electrically connected to a display device. The measuring device greatly simplifies the measuring steps and improves the convenience of detecting the DC high-voltage power supply while ensuring safety.

Description

Technical Field

[0001] The invention relates to a device and method for measuring a DC high voltage power supply, belonging to the technical field of measuring equipment. Background Art

[0002] An important method for many precision scientific instruments to separate substances now is to use a highly stable DC high-voltage power supply to generate a high-voltage electric field. For example, a mass spectrometer ionizes the components of the sample under test into ions of different charge-to-mass ratios, and then uses a high-voltage electric field to accelerate the ion beam into the mass analyzer, and finally performs velocity dispersion in the electric and magnetic fields; a capillary electrophoresis instrument uses a high-voltage electric field as a driving force to drive DNA fragments of different lengths with specific fluorescent signals to migrate in the capillary. Highly stable DC voltage is a necessary condition for these instruments to obtain migration time reproducibility. The ripple and noise attached to the DC high-voltage component have a very important impact on the precision, accuracy and reproducibility of the separation of the sample under test.

[0003] There are various methods for measuring high-voltage DC components and ripples, such as the voltage divider measurement method, the pulsating current rectification method, and the capacitance-resistance method. These test methods have their own advantages and disadvantages, and have strict requirements on the site and test instruments. The operation is also relatively cumbersome and requires professionals to operate. Summary of the invention

[0004] The primary technical problem to be solved by the present invention is to provide a DC high voltage power supply measuring device.

[0005] Another technical problem to be solved by the present invention is to provide a method for measuring a DC high voltage power supply.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0007] A DC high voltage power supply measuring device, comprising:

[0008] A shell, wherein a baffle is provided in the inner cavity of the shell to separate the inner cavity of the shell into a power supply chamber, an access chamber, an isolation chamber and a sampling chamber, wherein the shell and the baffle are both made of high-voltage resistant material;

[0009] A power supply circuit module is provided in the power supply chamber, and the power supply circuit module is electrically connected to an external power supply to provide direct current;

[0010] The access chamber is provided with a high-voltage terminal to be electrically connected to the output end of the high-voltage power supply to be tested, and the input end of the high-voltage power supply to be tested is electrically connected to the power supply circuit module through a connection port;

[0011] An isolation circuit module is provided in the isolation chamber, the isolation circuit module is electrically connected to the power supply circuit module, and an input end of the isolation circuit module is electrically connected to the high-voltage wiring terminal;

[0012] A sampling circuit module is provided in the sampling chamber. The sampling circuit module is electrically connected to the power supply circuit module, and an input end of the sampling circuit module is electrically connected to an output end of the isolation circuit module. The output end of the sampling circuit module is electrically connected to a display device.

[0013] Preferably, the housing comprises a bottom plate, a side plate and a cover plate;

[0014] The side panels are arranged around the bottom panel to form a cavity with an opening at the top;

[0015] The cover plate includes a fixed plate and a movable plate, wherein the fixed plate is covered on the top of the side plate to block a part of the top opening, and the movable plate is rotatably connected to the fixed plate to open or close another part of the top opening, thereby forming an inner cavity of the shell together;

[0016] A linkage switch is also provided in the inner cavity of the shell, the linkage switch is located below the movable plate and is electrically connected to the power supply circuit module; when the movable plate is in an open state, the linkage switch is disconnected, and when the movable plate is in a closed state, the linkage switch is turned on.

[0017] Preferably, a handle is installed on the movable plate, a buckle or a slot is provided on the end of the movable plate away from the fixed plate, a slot or a buckle is provided at a position on the side plate corresponding to the buckle or the slot, and pulling the handle can drive the buckle to engage or separate with the slot.

[0018] Preferably, the isolation circuit module comprises an isolation circuit and an isolation shielding cover, the isolation circuit is wrapped in the isolation shielding cover, and high-voltage potting glue is poured between the isolation circuit and the inner wall of the isolation shielding cover;

[0019] The sampling circuit module includes a ripple extraction circuit, a DC buck circuit and a sampling shielding cover. The ripple extraction circuit and the DC buck circuit are both wrapped in the sampling shielding cover, and high-voltage potting glue is poured between the ripple extraction circuit and the DC buck circuit and the inner wall of the sampling shielding cover.

[0020] Preferably, the device further comprises a cooling fan, which is disposed on the side panel and communicated with the power supply chamber, and the cooling fan is electrically connected to the power supply circuit module.

[0021] Preferably, it also includes a connection port, a high-voltage control button and a power switch, wherein the connection port, the high-voltage control button and the power switch are all arranged on the side panel and are electrically connected to the power supply circuit module; the connection port is used to electrically connect to the input end of the high-voltage power supply to be tested to supply power to the high-voltage power supply to be tested, the high-voltage control button is used to control the output voltage of the high-voltage power supply to be tested, and the power switch is used to control the on and off of the power supply circuit module.

[0022] Preferably, it also includes a high-voltage measurement output terminal and a parameter measurement output terminal, both of which are arranged on the side panel, and the input end of the high-voltage measurement output terminal and the input end of the parameter measurement output terminal are electrically connected to the output end of the sampling circuit module, and the output end of the high-voltage measurement output terminal and the output end of the parameter measurement output terminal are electrically connected to the oscilloscope.

[0023] Preferably, it further comprises a high-voltage terminal post and a terminal cover, wherein a central hole is provided at the center of the high-voltage terminal post, a first end of the high-voltage terminal post is connected to the high-voltage terminal, an outer wall of the second end of the high-voltage terminal post has an outer thread, and an inner wall of the terminal cover has an inner thread;

[0024] The output end of the high-voltage power supply to be detected is inserted into the central hole of the high-voltage terminal through the high-voltage terminal, and the column cover is threadedly connected to the second end of the high-voltage terminal to limit the relative position of the output end of the high-voltage power supply to be detected and the high-voltage terminal.

[0025] Preferably, the high-voltage resistant material at least includes polytetrafluoroethylene, and the voltage resistance value of the high-voltage resistant material is greater than 10KV / mm.

[0026] A method for measuring a DC high voltage power supply using the DC high voltage power supply measuring device comprises the following steps:

[0027] Electrically connect the external power supply to the power supply circuit module in the power supply room;

[0028] The power supply circuit module is electrically connected to the input end of the high voltage power supply to be tested through the connection port;

[0029] Electrically connect the output end of the high-voltage power supply to be tested to the high-voltage wiring terminal in the access room;

[0030] Electrically connecting the high voltage terminal block to the input end of the isolation circuit module in the isolation chamber;

[0031] Electrically connecting the output end of the isolation circuit module to the input end of the sampling circuit module in the sampling chamber;

[0032] Electrically connecting the output end of the sampling circuit module to the display device;

[0033] After the power is turned on, the high-voltage DC component and the high-voltage ripple value collected by the sampling circuit module are displayed through the display device, and the changes of the high-voltage DC component and the high-voltage ripple value can be seen by adjusting the high-voltage control button.

[0034] The present invention has the following technical effects:

[0035] The DC high-voltage power supply measurement provided by the technical solution of the present invention can be directly placed on a desktop when in use, and different functions can be realized through four chambers. First, the high-voltage power supply to be tested is powered by the power supply chamber, and then the output end of the high-voltage power supply to be tested is connected to the high-voltage terminal in the access chamber; then, the high-voltage terminal is used to connect to the isolation chamber, so as to perform high-voltage isolation to ensure safety; then, after high-voltage isolation, enter the sampling chamber for data collection; finally, the collected high-voltage DC component and high-voltage ripple value are displayed through a display device, and are presented to the tester in the form of intuitive data, thereby greatly simplifying the measurement steps and improving the convenience of DC high-voltage power supply detection while ensuring safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of the overall structure of a DC high voltage power supply measuring device provided in an embodiment of the present invention;

[0037] Figure 2 for Figure 1 A top view of

[0038] Figure 3 A circuit schematic diagram of a DC high voltage power supply measuring device provided in an embodiment of the present invention;

[0039] Figure 4 It is a schematic diagram of the cross-sectional structure of the high-voltage terminal and the terminal cover;

[0040] Figure 5 for Figure 1 The main view of

[0041] Figure 6 for Figure 1 Left view of;

[0042] Figure 7 This is the measurement diagram of high voltage DC component and ripple;

[0043] Figure 8 A flow chart of a method for measuring a DC high voltage power supply provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0044] The technical content of the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0045] Please refer to Figure 1 and Figure 2 As shown, a DC high-voltage power supply measuring device provided in an embodiment of the present invention includes: a housing 1, a baffle 2, a power supply circuit module 3, a high-voltage terminal 4, an isolation circuit module 5, a sampling circuit module 6 and a display device (not shown in the figure).

[0046] A baffle 2 is provided in the inner cavity of the shell 1 to divide the inner cavity of the shell 1 into a power supply chamber 101, an access chamber 102, an isolation chamber 103 and a sampling chamber 104. In this embodiment, the baffle 2 is cross-shaped, and can also be other shapes. Among them, the shell 1 and the baffle 2 are both made of high-voltage resistant materials. Preferably, the high-voltage resistant material at least includes polytetrafluoroethylene, and the withstand voltage value of the high-voltage resistant material is greater than 10KV / mm. A power supply circuit module 3 is provided in the power supply chamber 101, and the power supply circuit module 3 is electrically connected to an external power supply through a linkage switch 14 to provide direct current; a high-voltage terminal 4 is provided in the access chamber 102 to be electrically connected to the output end of the high-voltage power supply to be tested, and the input end of the high-voltage power supply to be tested is electrically connected to the power supply circuit module 3 through a connection port 16. An isolation circuit module 5 is provided in the isolation chamber 103, and the isolation circuit module 5 is electrically connected to the power supply circuit module 3, and the input end of the isolation circuit module 5 is electrically connected to the high-voltage terminal 4. A sampling circuit module 6 is provided in the sampling chamber 104 . The sampling circuit module 6 is electrically connected to the power supply circuit module 3 , and the input end of the sampling circuit module 6 is electrically connected to the output end of the isolation circuit module 5 . The output end of the sampling circuit module 6 is electrically connected to the display device.

[0047] Reference Figure 3 As shown, in this embodiment, during specific work, the housing 1 can be directly placed on the desktop, and different functions are realized through four chambers. First, the high-voltage power supply to be tested is powered by the power supply chamber 101, and then the output end of the high-voltage power supply to be tested is connected to the high-voltage terminal 4 in the access chamber 102 for high-voltage input; then, the high-voltage terminal 4 is used to connect to the isolation chamber 103, so as to perform high-voltage isolation through the isolation circuit inside the isolation chamber 103 to ensure safety; then, the ripple extraction circuit and the DC step-down circuit after high-voltage isolation enter the sampling chamber 104 for data collection; finally, the collected high-voltage DC component and high-voltage ripple value are output through the display device, and displayed to the tester in the form of intuitive data. By adjusting the high-voltage control button 17, the changes in the high-voltage DC component and the high-voltage ripple value can be seen, thereby greatly simplifying the measurement steps and improving the convenience of DC high-voltage power supply detection while ensuring safety.

[0048] In the above embodiment, the housing 1 is in the shape of a rectangular parallelepiped, specifically including a bottom plate 11, four side plates 12 and a cover plate 13. The bottom plate 11 is a rectangular plate, and the four side plates 12 are four rectangular plates, which are respectively arranged vertically around the bottom plate 11 (i.e., the front side plate, the rear side plate, the left side plate and the right side plate), thereby forming a cavity with an opening at the top. At the same time, it can be understood that the bottom plate 11 and the four side plates 12 can be integrally formed or fixedly connected by welding. The cover plate 13 includes a fixed plate 131 and a movable plate 132, wherein the fixed plate 131 is a rectangular plate, and the fixed plate 131 is covered on the top of the side plate 12, referring to Figure 1 As shown, in this embodiment, the fixed plate 131 is covered on the front side plate, the left side plate and the rear side plate, thereby blocking a part of the top opening; the movable plate 132 is a rectangular plate and is rotatably connected to the fixed plate 131 (for example, hinge connection). In this embodiment, the movable plate 132 can rotate relative to the fixed plate 131 around the front and rear directions of the shell 1, so as to open or close another part of the top opening. At the same time, a linkage switch 14 is also provided in the inner cavity of the shell 1. The linkage switch 14 is located below the movable plate 132 and is electrically connected to the power supply circuit module 3; when the movable plate 132 is opened, the linkage switch 14 is disconnected, and when the movable plate 132 is closed, the linkage switch 14 is turned on. Therefore, the linkage protection mechanism is formed by using the movable plate 132 in conjunction with the linkage switch 14, which can ensure that the power supply of the whole machine is immediately cut off when the movable plate 132 is opened. At this time, parameter measurement cannot be performed. Data measurement can only be performed when the movable plate 132 is closed, thereby avoiding the risk of leakage before measurement and improving the safety of the entire device.

[0049] In the above embodiment, preferably, a handle 15 is installed on the movable plate 132, a buckle or a slot is provided on the end of the movable plate 132 away from the fixed plate 131, and a slot or a buckle is provided at a position corresponding to the buckle or the slot on the side plate 12, and pulling the handle 15 can drive the buckle to engage or separate with the slot. Specifically, in this embodiment, the movable plate 132 is connected with the right side plate 12 by buckling, and a buckle can be provided on the end of the movable plate 132 away from the fixed plate 131, and a slot is provided on the right side plate 12, and then the connection between the movable plate 132 and the right side plate 12 is realized by the mutual engagement of the buckle and the slot; of course, in another embodiment, a slot can also be provided on the end of the movable plate 132 away from the fixed plate 131, and at the same time, a slot is provided on the right side plate 12, and the connection between the movable plate 132 and the right side plate 12 is realized by the mutual engagement of the buckle and the slot. Meanwhile, the handle 15 in this embodiment is a protrusion provided on the movable plate 132. In other embodiments, a hand-grip groove may be provided on the upper surface of the movable plate 132. In addition, it can be understood that the snap connection between the movable plate 132 and the right side plate 12 is only a preferred embodiment. In other embodiments, other connection methods may be used as needed.

[0050] In the above embodiment, the isolation circuit module 5 includes an isolation circuit and an isolation shielding cover, wherein the isolation circuit is a known circuit structure and is not limited here. The isolation shielding cover is a shell made of metal material, which wraps the isolation circuit in the isolation shielding cover to shield external interference. At the same time, high-voltage potting glue is poured between the isolation circuit and the inner wall of the isolation shielding cover to further enhance the safety of high-voltage isolation.

[0051] Similarly, the sampling circuit module 6 includes a ripple extraction circuit, a DC step-down circuit and a sampling shielding cover, wherein the ripple extraction circuit and the DC step-down circuit are both known circuit structures and are not limited here. The sampling shielding cover is also a shell made of metal material. The ripple extraction circuit and the DC step-down circuit are wrapped in the sampling shielding cover to isolate external interference. At the same time, high-voltage potting glue is poured between the ripple extraction circuit and the DC step-down circuit and the inner wall of the sampling shielding cover to further protect the high-voltage sampling and ensure the safety of high-voltage sampling.

[0052] It should be understood that the reason why the isolation circuit module 5 and the sampling circuit module 6 are potted with high-voltage potting glue is because the high-voltage cables are mainly concentrated in the isolation chamber 103 and the sampling chamber 104, so as to further improve the safety of the measurement. The power supply chamber 101 is mainly used to provide DC voltage for the high-voltage power supply to be tested. There are no high-voltage cables inside it, so no separate protection is required; and the access chamber 102 is used for flexible connection with the high-voltage power supply to be tested, so it cannot be directly potted.

[0053] Reference Figure 4 As shown, in the above embodiment, preferably, the DC high-voltage power supply measuring device also includes a high-voltage terminal 7 and a terminal cover 8. A center hole 71 is provided at the center of the high-voltage terminal 7. The first end of the high-voltage terminal 7 is connected to the high-voltage terminal 4. The outer wall of the second end of the high-voltage terminal 7 has an external thread, and the inner wall of the terminal cover 8 has an internal thread. The output end of the power supply to be detected is inserted into the center hole 71 of the high-voltage terminal 7 through the high-voltage terminal 4. The terminal cover 8 is threadedly connected to the second end of the high-voltage terminal 7 to limit the relative position of the output end of the power supply to be detected and the high-voltage terminal 7. In this embodiment, a special high-voltage wiring structure is designed in the access chamber 102 for secondary protection of high-voltage input to improve the safety of high-voltage input. Among them, the special nature of the high-voltage wiring structure is relative to the connection of ordinary cables. Ordinary cable connections are generally direct overlap or ordinary terminal connections. However, high-voltage cables are relatively hard and require a certain amount of force to fix. The threaded matching and tightening design of the high-voltage terminal 7 and the column cover 8 can safely and securely fix the cable; this design is easy to disassemble, and the tested power supply can be replaced without touching the cable, which can avoid electric shock from high-voltage residual voltage; high-voltage cable connections inevitably have some exposed areas, which are different from ordinary cable connections and require greater insulation from surrounding objects. For easy disassembly, it is not possible to apply insulating glue or wrap insulating tape. The threaded fixing structure + separate isolation compartment design of this design can well meet the insulation requirements.

[0054] Reference Figure 5 As shown, in the above embodiment, the DC high voltage power supply measuring device further includes a cooling fan 9, which is arranged on the side plate 12 and communicated with the power supply chamber 101, and the cooling fan 9 is electrically connected to the power supply circuit module 3. Specifically, there are two cooling fans 9, and both cooling fans 9 are arranged on the front side plate 12. When the power supply circuit module 3 starts to work, the cooling fan 9 is started to dissipate the heat of the power supply circuit module 3 in the power supply chamber 101.

[0055] Reference Figure 6As shown, in the above embodiment, the left side panel 12 is further provided with a connection port 16, a high voltage control button 17 and a power switch 18, the connection port 16 and the power switch 18 are electrically connected to the power supply circuit module 3, and the high voltage control button 17 is electrically connected to the connection port 16. The connection port 16 is used to be electrically connected to the input end of the high voltage power supply to be tested, so as to supply power to the high voltage power supply to be tested, adjust the high voltage output, and monitor the high voltage parameters; the high voltage control button 17 is used to control the output voltage of the high voltage power supply to be tested, and the output voltage value of the high voltage power supply to be tested can be changed by adjusting the high voltage control button 17; the power switch 18 is the main switch of the entire circuit, and the power supply circuit module 3 can be controlled to be turned on and off by the power switch 18. At the same time, it should be understood that when the power switch 18 is turned on, the movable plate 132 needs to be closed at the same time, so that the linkage switch 14 is also in the turned-on state to complete the power-on, and any one of the power switch 18 and the linkage switch 14 cannot be powered on when it is in the turned-off state.

[0056] Continue to refer to Figure 6 As shown, in the above embodiment, the left side plate 12 is also provided with a high voltage measurement output terminal 19 and a parameter measurement output terminal 10, the input end of the high voltage measurement output terminal 19 and the input end of the parameter measurement output terminal 10 are both electrically connected to the output end of the sampling circuit module 6, and the output end of the high voltage measurement output terminal 19 and the output end of the parameter measurement output terminal 10 are both electrically connected to the oscilloscope. Figure 7 As shown, a high-voltage DC component and ripple measurement diagram displayed by an oscilloscope can be used to read the values ​​of the high-voltage DC component and ripple very intuitively. In addition, it should be understood that in other embodiments, the display device can also be replaced by a multimeter or other instrument, which can be adaptively selected according to needs when used.

[0057] Reference Figure 8 As shown, a DC high voltage power supply measurement method using a DC high voltage power supply measurement device provided by an embodiment of the present invention specifically includes the following steps:

[0058] S10, electrically connecting the external power supply to the power supply circuit module 3 in the power supply room 101;

[0059] S20, electrically connecting the power supply circuit module 3 to the input end of the high-voltage power supply to be tested through the connection port 16;

[0060] S30, electrically connecting the output end of the high-voltage power supply to be tested to the high-voltage terminal 4 in the access chamber 102;

[0061] S40, electrically connecting the high voltage terminal 4 to the input end of the isolation circuit module 5 in the isolation chamber 103;

[0062] S50, electrically connecting the output end of the isolation circuit module 5 to the input end of the sampling circuit module 6 in the sampling chamber 104;

[0063] S60, electrically connecting the output end of the sampling circuit module 6 to the display device;

[0064] S70 , after the power is turned on, the high-voltage DC component and the high-voltage ripple value collected by the sampling circuit module are displayed through the display device.

[0065] In summary, the DC high-voltage power supply measurement device and measurement method provided in the embodiments of the present invention can fully ensure the safety of test personnel and equipment, and are not affected by and restricted by site conditions, thereby accelerating product development, providing accurate and stable test results, saving instrument function design time and test costs, and effectively ensuring the quality of whole machine assembly, which is beneficial to the development, production, debugging and use of scientific instruments.

[0066] The present invention is described in detail above. For those skilled in the art, any obvious changes made to the present invention without departing from the essence of the present invention will constitute an infringement of the patent right of the present invention and the corresponding legal liability will be borne.

Claims

1. A DC high voltage power supply measuring device, characterized in that: include: A shell, wherein a baffle is provided in an inner cavity of the shell to separate the inner cavity of the shell into a power supply chamber, an access chamber, an isolation chamber and a sampling chamber, wherein the shell and the baffle are both made of a high-voltage resistant material; A power supply circuit module is provided in the power supply chamber, and the power supply circuit module is electrically connected to an external power supply to provide direct current; The access chamber is provided with a high-voltage terminal to be electrically connected to the output end of the high-voltage power supply to be tested, and the input end of the high-voltage power supply to be tested is electrically connected to the power supply circuit module through a connection port; An isolation circuit module is provided in the isolation chamber, the isolation circuit module is electrically connected to the power supply circuit module, and an input end of the isolation circuit module is electrically connected to the high-voltage wiring terminal; A sampling circuit module is provided in the sampling chamber, the sampling circuit module is electrically connected to the power supply circuit module, the input end of the sampling circuit module is electrically connected to the output end of the isolation circuit module, and the output end of the sampling circuit module is electrically connected to the display device; Wherein, the shell comprises a bottom plate, a side plate and a cover plate; the side plates are arranged around the bottom plate to form a cavity with a top opening; the cover plate comprises a fixed plate and a movable plate, the fixed plate is covered on the top of the side plate to block a part of the top opening, and the movable plate is rotatably connected to the fixed plate to open or close another part of the top opening, thereby forming an inner cavity of the shell together; a linkage switch is also arranged in the inner cavity of the shell, the linkage switch is located below the movable plate and is electrically connected to the power supply circuit module; when the movable plate is in an open state, the linkage switch is disconnected, and when the movable plate is in a closed state, the linkage switch is turned on; The isolation circuit module includes an isolation circuit and an isolation shielding cover, the isolation circuit is wrapped in the isolation shielding cover, and high-voltage potting glue is poured between the isolation circuit and the inner wall of the isolation shielding cover; the sampling circuit module includes a ripple extraction circuit, a DC step-down circuit and a sampling shielding cover, the ripple extraction circuit and the DC step-down circuit are both wrapped in the sampling shielding cover, and high-voltage potting glue is poured between the ripple extraction circuit and the DC step-down circuit and the inner wall of the sampling shielding cover.

2. The DC high voltage power supply measuring device according to claim 1, characterized in that: A handle is installed on the movable plate, a buckle or a slot is provided at one end of the movable plate away from the fixed plate, a slot or a buckle is provided at a position on the side plate corresponding to the buckle or the slot, and pulling the handle can drive the buckle to engage with or separate from the slot.

3. The DC high voltage power supply measuring device according to claim 1, characterized in that: It also includes a heat dissipation fan, which is arranged on the side plate and communicated with the power supply chamber, and the heat dissipation fan is electrically connected to the power supply circuit module.

4. The DC high voltage power supply measuring device according to claim 1, characterized in that: It also includes a connection port, a high-voltage control button and a power switch, which are all arranged on the side panel and are electrically connected to the power supply circuit module; the connection port is used to electrically connect to the input end of the high-voltage power supply to be tested to supply power to the high-voltage power supply to be tested, the high-voltage control button is used to control the output voltage of the high-voltage power supply to be tested, and the power switch is used to control the on and off of the power supply circuit module.

5. The DC high voltage power supply measuring device according to claim 1, characterized in that: It also includes a high-voltage measurement output terminal and a parameter measurement output terminal, which are both arranged on the side panel, and the input end of the high-voltage measurement output terminal and the input end of the parameter measurement output terminal are both electrically connected to the output end of the sampling circuit module, and the output end of the high-voltage measurement output terminal and the output end of the parameter measurement output terminal are both electrically connected to the oscilloscope.

6. The DC high voltage power supply measuring device according to any one of claims 1 to 5, characterized in that: It also includes a high-voltage terminal and a terminal cover, wherein a center hole is opened in the center of the high-voltage terminal, a first end of the high-voltage terminal is connected to the high-voltage terminal, an outer wall of the second end of the high-voltage terminal is provided with an external thread, and an inner wall of the terminal cover is provided with an internal thread; The output end of the power supply to be detected is inserted into the central hole of the high-voltage terminal through the high-voltage terminal, and the column cover is threadedly connected to the second end of the high-voltage terminal to limit the relative position of the output end of the power supply to be detected and the high-voltage terminal.

7. The DC high voltage power supply measuring device according to any one of claims 1 to 5, characterized in that: The high-voltage resistant material at least includes polytetrafluoroethylene, and the voltage resistance value of the high-voltage resistant material is greater than 10KV / mm.

8. A method for measuring a DC high voltage power supply using the DC high voltage power supply measuring device according to any one of claims 1 to 7, characterized in that: The following steps are involved: Electrically connect the external power supply to the power supply circuit module in the power supply room; The power supply circuit module is electrically connected to the input end of the high voltage power supply to be tested through the connection port; Electrically connect the output end of the high-voltage power supply to be tested to the high-voltage wiring terminal in the access room; Electrically connecting the high voltage terminal block to the input end of the isolation circuit module in the isolation chamber; Electrically connecting the output end of the isolation circuit module to the input end of the sampling circuit module in the sampling chamber; Electrically connecting the output end of the sampling circuit module to the display device; After the power is turned on, the high-voltage DC component and the high-voltage ripple value collected by the sampling circuit module are displayed through the display device.

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