CN117135862A - High-frequency high-voltage direct-current power supply - Google Patents
High-frequency high-voltage direct-current power supply Download PDFInfo
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- CN117135862A CN117135862A CN202311156827.7A CN202311156827A CN117135862A CN 117135862 A CN117135862 A CN 117135862A CN 202311156827 A CN202311156827 A CN 202311156827A CN 117135862 A CN117135862 A CN 117135862A
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- telescopic cylinder
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- power supply
- current power
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- 229920001971 elastomer Polymers 0.000 claims description 51
- 230000000670 limiting effect Effects 0.000 claims description 24
- 239000010985 leather Substances 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000004804 winding Methods 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 abstract description 12
- 238000011900 installation process Methods 0.000 abstract description 2
- 238000001125 extrusion Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000003825 pressing Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000004020 conductor Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 239000012212 insulator Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/06—Hermetically-sealed casings
- H05K5/069—Other details of the casing, e.g. wall structure, passage for a connector, a cable, a shaft
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/02—Arrangements of circuit components or wiring on supporting structure
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Details Of Aerials (AREA)
Abstract
The utility model discloses a high-frequency high-voltage direct-current power supply, which relates to the technical field of power supplies and comprises a base and a shell arranged on the base, wherein a high-voltage output end is arranged on the rear end face of the shell, and a protection component for protecting the high-voltage output end is arranged on the shell; the protection component comprises a fixed cylinder fixedly arranged on the shell, a first telescopic cylinder coaxial with the fixed cylinder is movably arranged in the fixed cylinder, and a second telescopic cylinder coaxial with the first telescopic cylinder is movably arranged in the first telescopic cylinder. The protection component for protecting the high-voltage output section is of a three-section telescopic structure, and an operator only needs to pull the second telescopic cylinder in the installation process, so that welding operation is not needed, and convenience is greatly improved; and because welding is not needed, no welding seam exists on the protection assembly, and the condition of rainwater leakage is avoided.
Description
Technical Field
The utility model relates to the technical field of power supplies, in particular to a high-frequency high-voltage direct-current power supply.
Background
A high frequency high voltage dc power supply is a power supply device for generating a high frequency high voltage, and generally includes a transformer, a rectifier, a filter, a power amplifier, etc., whose output voltage can reach thousands or even tens of kilovolts, and whose output frequency is between thousands and hundreds of hertz. The basic principle of the high-frequency high-voltage power supply is that the interaction of components such as an inductor, a capacitor, a switching tube and the like in the circuit is utilized to generate a high-frequency oscillating circuit, and the voltage rise is realized through a transformer. When the input voltage oscillates at high frequency, the switching tube rapidly switches the output circuit so that the inductor stores energy and transmits the energy to the output end; at the output, the capacitor discharges the stored energy to form a high voltage output. High frequency high voltage dc power supplies are commonly used in the fields of ion implantation, laser equipment, high voltage testing, medical instruments, etc. in industrial production.
At present, part of research on a high-frequency high-voltage direct-current power supply is carried out, for example, a high-frequency high-voltage direct-current power supply device disclosed by China utility model with the publication number of CN207573247U comprises a mounting rack, an output section, a refrigeration section, a functional section and a control section, wherein the functional section comprises an oil immersed transformer shell, and a high-frequency transformer is arranged in the shell; the control section comprises an outer shell and an inner shell, a cavity is reserved between the outer shell and the inner shell, a spacer is arranged in the cavity, a mounting plate is arranged in the inner shell, and a control circuit, a three-phase voltage-regulating rectifying system and a full-bridge inverter are arranged on the mounting plate; the refrigerating section comprises an oil air cooler and a cold quantity circulation assembly thereof; the output section includes high-voltage output device, through setting up shell body and interior casing, sets up control circuit inside the interior casing, avoids heat in the casing and the influence of high frequency electromagnetic wave to the control section effectively, makes the operation of whole high frequency power more stable on the whole.
The output section of the high-frequency high-voltage direct-current power supply comprises a metal conductor and an insulator wrapped outside the metal conductor, and a cylinder body for protecting the conductor and the insulator is further arranged on the shell of the power supply. At present, in the prior art including the patents, the cylinder body of the output section of the high-frequency high-voltage direct current power supply is of fixed length; in the process of installing the high-frequency high-voltage direct-current power supply, operators need to add protective accessories according to the actual distance between the tail end of the cylinder body of the output section and the shell of the downstream current input equipment so as to ensure seamless butt joint between the cylinder body of the output section of the high-frequency high-voltage direct-current power supply and the downstream current input equipment. Generally, an operator can cut two prefabricated arc plates with the same diameter as the cylinder on site to obtain arc plates with proper lengths; and then, after the high-voltage output section is electrically connected with the downstream input end, the two arc plates are welded on the shell of the barrel and the downstream current input equipment, and finally, the two arc plates are welded together (shown in figure 1). Obviously, two operators are needed to finish the welding of the arc plate in a cooperative way, namely one person holds the arc plate and the other person welds, the requirements of the operators holding the arc plate are very high, and once the position of the arc plate deviates, gaps are easily left at the welding seam. In fact, water leakage at the welding seam in the later use process caused by poor quality of the welding seam in the process of installation and welding is also quite often caused, so that water accumulation in the cylinder body is caused. In summary, how to make operators conveniently dock the cylinder and the housing of the downstream current input device, and avoid the situation of rain leakage in later use is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The utility model aims to provide a high-frequency high-voltage direct-current power supply so as to solve the defects in the prior art.
In order to achieve the above object, the present utility model provides the following technical solutions: the utility model provides a high frequency high voltage DC power supply, includes the base and installs the casing on the base, and high voltage output is installed to the terminal surface behind the casing, install the protection subassembly that is used for protecting high voltage output on the casing.
The protection component comprises a fixed cylinder fixedly arranged on the shell, a first telescopic cylinder coaxial with the fixed cylinder is movably arranged in the fixed cylinder, and a second telescopic cylinder coaxial with the first telescopic cylinder is movably arranged in the first telescopic cylinder.
As a preferable technical scheme of the utility model, the protection component further comprises a connecting rod unit, wherein the connecting rod unit comprises a first connecting rod rotatably arranged on the inner wall of the fixed cylinder, a second connecting rod is rotatably arranged on the inner wall of the second telescopic cylinder, and a third connecting rod and a fourth connecting rod which are coaxial are rotatably arranged on the inner wall of the first telescopic cylinder; the first connecting rod is hinged with the end part of the third connecting rod, and the second connecting rod is hinged with the end part of the fourth connecting rod.
As a preferable technical scheme of the utility model, the number of the connecting rod units is two, and the two groups of connecting rod units are arranged symmetrically up and down.
As a preferable technical scheme of the utility model, the axes of the first connecting rod, the second connecting rod and the third connecting rod are parallel to each other and are perpendicular to the axis of the fixed cylinder.
As a preferable technical scheme of the utility model, the connecting rod unit further comprises a limiting rod which is slidably arranged on the inner wall of the fixed cylinder and is parallel to the axis of the fixed cylinder; the end parts of the first connecting rod and the third connecting rod are jointly rotatably arranged on the first shaft seat, and the end parts of the second connecting rod and the fourth connecting rod are jointly rotatably arranged on the second shaft seat; the limiting rod penetrates through the first shaft seat and the second shaft seat.
As a preferable technical scheme of the utility model, the limiting rod is a round rod, and the first shaft seat and the second shaft seat are provided with balls in rolling fit with the limiting rod.
As a preferable technical scheme of the utility model, a leather rope with a circular cross section is fixedly sleeved on the limiting rod, a sealing ring is fixedly arranged on the fixing cylinder corresponding to the position of the leather rope, and the leather rope penetrates through the sealing ring and extends to the outside of the fixing cylinder; and a winding drum for winding the leather rope is fixedly arranged on the outer wall of the fixed drum.
As a preferable technical scheme of the utility model, annular grooves are formed in the inner wall of the fixed cylinder and the inner wall of the first telescopic cylinder, and annular rubber sheets coaxial with the annular grooves are arranged in the annular grooves.
As a preferable technical scheme of the utility model, the fixed cylinder and the first telescopic cylinder are in clearance fit, and the first telescopic cylinder and the second telescopic cylinder are in clearance fit; the thickness of the annular rubber sheet is smaller than the depth of the annular groove, and the annular rubber sheet is fixedly inserted into the annular end face of the annular groove far away from the shell; the outer walls of the first telescopic cylinder and the second telescopic cylinder are respectively provided with a squeezing ring positioned in the corresponding annular groove.
As a preferable technical scheme of the utility model, an annular containing groove is formed in the annular end face, far away from the shell, of the second telescopic cylinder, a rubber ring is slidably arranged in the containing groove, the inner wall and the outer wall of the rubber ring are attached to the containing groove, and water is filled in the containing groove.
In the technical scheme, the protection component for protecting the high-voltage output section is of a three-section telescopic structure, and an operator can adjust the extension length of the protection component according to the actual distance between the high-frequency high-voltage direct current power supply and the downstream current input equipment in the process of installing the high-frequency high-voltage direct current power supply, so that the end face of the second telescopic cylinder is attached to the surface of the downstream current input equipment, and the high-voltage output section is ensured to be in a closed environment; in the installation process, an operator only needs to pull the second telescopic cylinder, and welding operation is not needed, so that convenience is greatly improved; and because welding is not needed, no welding seam exists on the protection assembly, and the condition of rainwater leakage is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
FIG. 1 is a prior art high frequency high voltage DC power supply as described in the background;
fig. 2 is a schematic perspective view of a high-frequency high-voltage dc power supply in embodiment 1;
FIG. 3 is a schematic view showing the internal structure of the fixing cylinder and the protection assembly in embodiment 1;
fig. 4 is a schematic perspective view of a protection component in embodiment 2;
FIG. 5 is an enlarged schematic view of FIG. 4 at A;
fig. 6 is a schematic view showing the internal structure of the protection component in embodiment 2;
FIG. 7 is an enlarged schematic view at B in FIG. 6;
FIG. 8 is an enlarged schematic view of FIG. 6 at C;
fig. 9 is a schematic view showing a state in which the annular rubber sheet is compressed in example 2;
fig. 10 is a schematic view showing a part of the internal structure of the second telescopic cylinder in embodiment 3.
Reference numerals illustrate:
1. a base; 2. a housing; 3. a high voltage output terminal; 4. a protection component; 401. a fixed cylinder; 402. a first telescopic cylinder; 403. a second telescopic cylinder; 404. a first link; 405. a second link; 406. a third link; 407. a fourth link; 408. a limit rod; 409. a first shaft seat; 410. a second axle seat; 411. a ball; 412. a leather rope; 413. a seal ring; 414. a bobbin; 415. an annular groove; 416. an annular rubber sheet; 417. a pressing ring; 418. a receiving groove; 419. a rubber ring.
Detailed Description
In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.
Example 1
As shown in fig. 2 and 3, the present embodiment provides a high-frequency high-voltage dc power supply, which includes a base 1 and a housing 2 mounted on the base 1, wherein components such as a transformer, a rectifier, a filter, a power amplifier, etc. are mounted in the housing 2, a high-voltage output terminal 3 is mounted on a rear end surface of the housing 2, and the high-voltage output terminal 3 includes a conductor and an insulator wrapping the conductor; an operator hangs and places the high-frequency high-voltage direct-current power supply to an installation position through a hoisting device, the base 1 plays a supporting role on the shell 2, and high-voltage generated by the high-frequency high-voltage direct-current power supply flows through the high-voltage output end 3 to be output; the operator needs to electrically connect the downstream current input device with the high voltage output 3.
As shown in fig. 2 and 3, a protection component 4 for protecting the high-voltage output end 3 is mounted on the casing 2, the protection component 4 comprises a fixed cylinder 401 fixedly mounted on the casing 2, a first telescopic cylinder 402 coaxial with the fixed cylinder 401 is movably mounted in the fixed cylinder 401, and a second telescopic cylinder 403 coaxial with the first telescopic cylinder 402 is movably mounted in the first telescopic cylinder 402.
The fixed cylinder 401 and the first telescopic cylinder 402 can generate axial relative movement and also can generate relative rotation; the first telescopic cylinder 402 and the second telescopic cylinder 403 can generate axial relative movement and also can generate relative rotation; after the operator connects the downstream current input device with the high-voltage output end 3 electrically, the operator pulls the first telescopic cylinder 402 and the second telescopic cylinder 403 along the axial direction until the end surface of the second telescopic cylinder 403 is attached to the surface of the housing of the downstream current input device; thus, the fixed cylinder 401, the first telescopic cylinder 402 and the second telescopic cylinder 403 together form an enclosed space between the housing 2 and the downstream current input device, and the high voltage output terminal 3 is located in the enclosed space; the operator does not need to weld, and because there is no welding seam, there is no rainwater seepage between the fixed cylinder 401, the first telescopic cylinder 402 and the second telescopic cylinder 403, so that the condition that the high-voltage output end 3 contacts with rainwater to cause circuit failure is avoided. In addition, the three-section telescopic structure in the embodiment occupies small space, and is convenient for transportation and storage of the power supply.
Example 2
In this embodiment, the fixed cylinder 401 is in sliding fit with the first telescopic cylinder 402 in the axial direction, and the first telescopic cylinder 402 is in sliding fit with the second telescopic cylinder 403 in the axial direction; the inner wall of the fixed cylinder 401 is in clearance fit with the outer wall of the first telescopic cylinder 402, and the inner wall of the first telescopic cylinder 402 is in clearance fit with the outer wall of the second telescopic cylinder 403; as shown in fig. 4 and 5, the protection assembly 4 of the present embodiment further includes a link unit, which includes a first link 404 rotatably mounted on the inner wall of the fixed cylinder 401, a second link 405 rotatably mounted on the inner wall of the second telescopic cylinder 403, and a third link 406 and a fourth link 407 coaxially rotatably mounted on the inner wall of the first telescopic cylinder 402; the ends of the first connecting rod 404 and the third connecting rod 406 are hinged, and the ends of the second connecting rod 405 and the fourth connecting rod 407 are hinged; the rotation axes of the first link 404, the second link 405, and the third link 406 are parallel to each other and are all perpendicular to the axis of the fixed cylinder 401; in this embodiment, the first link 404 and the second link 405 are equal in length, and the ends of the first link and the second link near the inner wall of the first telescopic cylinder 402 are located at the same horizontal level.
Taking fig. 6 as an example, in the initial state, the first link 404 and the second link 405 are both in a vertical state, and in the process that the operator pulls the second telescopic tube 403 to the right in the axial direction, the second link 405 rotates clockwise relative to the second telescopic tube 403, and the fourth link 407 rotates counterclockwise relative to the first telescopic tube 402; in the process that an operator pulls the first telescopic cylinder 402 to the right in the axial direction, the third connecting rod 406 rotates clockwise relative to the first telescopic cylinder 402, and the first connecting rod 404 rotates anticlockwise relative to the fixed cylinder 401; the first connecting rod 404, the second connecting rod 405, the third connecting rod 406 and the fourth connecting rod 407 together play a limiting role on the first telescopic cylinder 402 and the second telescopic cylinder 403, so that the first telescopic cylinder 402 and the second telescopic cylinder 403 can only translate along the axial direction and cannot rotate relative to the fixed cylinder 401.
As shown in fig. 6, in this embodiment, the number of the link units is two, and the two sets of link units are symmetrically arranged up and down, so as to improve the stability of the protection assembly 4, and ensure that the first telescopic cylinder 402 and the second telescopic cylinder 403 can only translate along the axial direction and cannot rotate relative to the fixed cylinder 401.
As shown in fig. 5 and 6, the link unit further includes a limit lever 408 slidably mounted on the inner wall of the fixed cylinder 401 and parallel to the axis of the fixed cylinder 401; the ends of the first connecting rod 404 and the third connecting rod 406 are rotatably mounted on a first shaft seat 409, and the ends of the second connecting rod 405 and the fourth connecting rod 407 are rotatably mounted on a second shaft seat 410; the limiting rod 408 penetrates through the first shaft seat 409 and the second shaft seat 410; the limiting rod 408 is always kept in a horizontal state, the limiting rod 408 cannot rotate, and the limiting rod 408 can move relative to the first shaft seat 409 and the second shaft seat 410 in the axial direction.
The hinged ends of the first link 404 and the third link 406, and the hinged ends of the second link 405 and the fourth link 407 must be maintained at the same level by the limiting action of the limiting lever 408; then, the first link 404, the third link 406, the second link 405 and the fourth link 407 can only rotate synchronously, and the stop lever 408 can also move up and down simultaneously during the rotation of the four links, and the first shaft seat 409 and the second shaft seat 410 can move on the stop lever 408; thus, the operator only needs to pull the second telescopic cylinder 403 along the axial direction, the first telescopic cylinder 402 can translate along the axial direction synchronously, and the convenience of the installation of the operator is improved under the condition that the power supply is far away from the downstream current input equipment; in addition, after the installation and docking are completed, if an external force caused by an uncertain factor acts on the second telescopic cylinder 403, a force in the direction of the power supply is applied to the second telescopic cylinder 403, and the force is required to drive the second telescopic cylinder 403 to move towards the power supply and separate from the housing of the downstream current input device, the resistance of the second telescopic cylinder 403 itself needs to be overcome, and the resistance of the first telescopic cylinder 402 needs to be overcome, and obviously, the external force needs to be large to enable the second telescopic cylinder 403 and the first telescopic cylinder 402 to translate synchronously; this increases the stability of the protection assembly 4 so that the second telescopic tube 403 is not easily separated from the housing of the downstream current input device.
As shown in fig. 7, the limiting rod 408 is a round rod, and the first shaft seat 409 and the second shaft seat 410 are both provided with balls 411 that are in rolling fit with the limiting rod 408, so as to reduce the friction force applied to the limiting rod 408, and facilitate the operator to pull the second telescopic tube 403 to a position that is attached to the housing of the downstream current input device.
As shown in fig. 7, a rubber rope 412 with a circular cross section is fixedly sleeved on the limiting rod 408, a sealing ring 413 is fixedly arranged on the fixed cylinder 401 at a position corresponding to the rubber rope 412, and the rubber rope 412 penetrates through the sealing ring 413 and extends to the outside of the fixed cylinder 401; the sealing ring 413 and the leather rope 412 are mutually extruded, the sealing ring 413 can deform under the extrusion of the leather rope 412, and rainwater and air cannot enter the protection assembly 4 from the position between the sealing ring 413 and the leather rope 412; the outer wall of the fixed drum 401 is fixedly provided with a winding drum 414 for winding the leather rope 412, and one end of the leather rope 412 can be wound on the winding drum 414, so that the leather rope 412 cannot move towards the inside of the protection component 4 under the action of external tension.
Specifically, taking fig. 6 as an illustration, in the initial state shown in fig. 6, when the operator pulls the second telescopic cylinder 403 to translate rightward, the upper limit rod 408 will rise along the inner wall of the fixed cylinder 401, and the leather rope 412 will change from the tensioned state to the relaxed state; when the second telescopic cylinder 403 translates rightward to a state of being fitted to the downstream current input device housing, the operator pulls the portion of the cord 412 located outside the protection assembly 4 so that the cord 412 returns to the tensioned state again, and then winds up the extra slack cord 412 around the bobbin 414 and tightens up; in this way, the upper limiting rod 408 cannot descend, and the first telescopic cylinder 402 and the second telescopic cylinder 403 cannot axially translate under the limiting action of the limiting rod 408, so that the end part of the second telescopic cylinder 403 is always attached to the outer shell of the downstream current input device, and rainwater is prevented from leaking into the protection assembly 4 to be in contact with the high-voltage output end 3; in this embodiment, the operator only needs to operate the leather rope 412 outside the fixed cylinder 401 to fix the positions of the first telescopic cylinder 402 and the second telescopic cylinder 403.
As shown in fig. 8, annular grooves 415 are formed in the inner wall of the fixed cylinder 401 and the inner wall of the first telescopic cylinder 402, and annular rubber sheets 416 coaxial with the annular grooves 415 are arranged in the annular grooves 415; in this embodiment, the inner wall of the fixed cylinder 401 is in clearance fit with the outer wall of the first telescopic cylinder 402, and the inner wall of the first telescopic cylinder 402 is in clearance fit with the outer wall of the second telescopic cylinder 403, so as to reduce friction force, which is convenient for the operator Ping Ladi to use the second telescopic cylinder 403, but the clearance fit inevitably brings about the problem of insufficient tightness, especially when the distance between the power supply and the downstream current input device is longer, the area of the joint part between the inner wall of the fixed cylinder 401 and the outer wall of the first telescopic cylinder 402 is smaller, the area of the joint part between the inner wall of the first telescopic cylinder 402 and the outer wall of the second telescopic cylinder 403 is smaller, and the problem of insufficient tightness is particularly serious; the annular rubber sheet 416 plays a role in sealing, so that external rainwater is prevented from penetrating into the protection assembly 4 from a gap between the inner wall of the fixed cylinder 401 and the outer wall of the first telescopic cylinder 402, and external rainwater is prevented from penetrating into the protection assembly 4 from a gap between the inner wall of the first telescopic cylinder 402 and the outer wall of the second telescopic cylinder 403.
As shown in fig. 8 and 9, the thickness of the annular rubber sheet 416 is smaller than the depth of the annular groove 415, and the annular rubber sheet 416 is fixedly inserted on the annular end face of the annular groove 415 away from the housing 2; squeeze rings 417 positioned in the corresponding annular grooves 415 are fixedly arranged on the outer walls of the first telescopic cylinder 402 and the second telescopic cylinder 403; since the fixed cylinder 401 and the first telescopic cylinder 402 are in clearance fit, the first telescopic cylinder 402 and the second telescopic cylinder 403 are in clearance fit, and the thickness of the annular rubber sheet 416 is smaller than the depth of the annular groove 415, the friction force applied to the first telescopic cylinder 402 and the second telescopic cylinder 403 by an operator Ping Ladi in the initial stage of the second telescopic cylinder 403 is small, and the annular rubber sheet 416 is not in contact with the first telescopic cylinder 402 and the second telescopic cylinder 403, and the extrusion ring 417 is also separated from the annular rubber sheet 416 by a certain distance; however, as the operator continues Ping Ladi the two telescopic cylinders 403, the extrusion ring 417 is finally bonded with the annular rubber sheet 416 and axially extrudes the annular rubber sheet 416, the extruded annular rubber sheet 416 is in a wavy shape as shown in fig. 9, and in particular, when the axial extrusion force applied by the extrusion ring 417 to the annular rubber sheet 416 is smaller, the number of undulations of the annular rubber sheet 416 is smaller, and as the extrusion force applied by the extrusion ring 417 to the annular rubber sheet 416 is larger, the number of undulations of the annular rubber sheet 416 is larger, namely, the number of undulations of the annular rubber sheet 416 is larger; each ring of folds on the annular rubber sheet 416 forms a ring seal with the first telescopic cylinder 402 or the second telescopic cylinder 403, so that the sealing effect is achieved, and external rainwater is prevented from leaking into the protection component 4.
It should be noted that, the farther the distance between the power source and the downstream current input device is, the larger the pressing force applied to the annular rubber sheet 416 by the pressing ring 417, the more the pressing force applied to the annular rubber sheet 416 by the pressing ring 417, and accordingly, the larger the pressing force between the annular rubber sheet 416 and the first telescopic tube 402 or the second telescopic tube 403, the better the sealing effect; in other words, if the distance between the power source and the downstream current input device is short, the wrinkles on the annular rubber sheet 416 are small, and although the sealing performance is good in the state where the annular rubber sheet 416 is less folded than in the state where the annular rubber sheet 416 is folded, the area of the portion where the inner wall of the fixed cylinder 401 is bonded to the outer wall of the first telescopic cylinder 402 is large, and the area of the portion where the inner wall of the first telescopic cylinder 402 is bonded to the outer wall of the second telescopic cylinder 403 is also large, so that external rainwater is not likely to penetrate into the protection unit 4.
In summary, the present embodiment realizes the fixing of the positions of the first telescopic cylinder 402 and the second telescopic cylinder 403, so that the end surface of the second telescopic cylinder 403 is ensured not to be separated from the surface of the housing of the downstream current input device; the sealing performance of the protection component 4 can be guaranteed under the condition of different distances between the power supply and the downstream current input equipment, and external rainwater is prevented from leaking into the protection component 4.
Example 3
As shown in fig. 10, in the above embodiment, an annular accommodating groove 418 is formed on an annular end surface of the second telescopic cylinder 403, which is far away from the housing 2, a rubber ring 419 is slidably mounted in the accommodating groove 418, and water is filled in the accommodating groove 418, so that an annular area between the end surface of the accommodating groove 418 and the end surface of the rubber ring 419 is filled with water; the rubber ring 419 is made of rubber materials such as NBR nitrile rubber which is not easy to shrink when cooled, and the rubber ring 419 is not easy to deform when being extruded by external force; the inner wall and the outer wall of the rubber ring 419 are tightly fitted with the accommodating groove 418 so that water in the accommodating groove 418 does not seep out between the rubber ring 419 and the accommodating groove 418; a water filling port for filling water into the accommodating groove 418 is additionally formed in the second telescopic cylinder 403, and the water filling port can be closed; in the manufacture of the second telescopic cylinder 403, the rubber ring 419 is inserted into the accommodating groove 418 so that the end surfaces of the rubber ring 419 are flush, and then water is injected into the accommodating groove 418.
When the temperature is low in winter, the fixed cylinder 401, the first telescopic cylinder 402 and the second telescopic cylinder 403 which are made of metal can generate a certain amount of axial shrinkage due to the principle of thermal expansion and contraction, which inevitably leads to the separation of the end face of the second telescopic cylinder 403 from the downstream current input equipment shell; the water filled in the accommodating groove 418 also becomes ice, and as the volume of the water increases after the water becomes ice, annular ice cubes formed in the accommodating groove 418 can apply axial thrust to the rubber ring 419, the rubber ring 419 can translate towards the downstream current input device shell along the axial direction under the action of the thrust, and the rubber ring 419 always presses against the downstream current input device shell; in this way, the rubber ring 419 plays a role in sealing the second telescopic cylinder 403 and the current input device casing, so that the condition that external rainwater leaks into the protection assembly 4 from the end face of the second telescopic cylinder 403 under the condition of low air temperature in winter is avoided.
While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.
Claims (10)
1. The high-frequency high-voltage direct-current power supply comprises a base (1) and a shell (2) arranged on the base (1), wherein a high-voltage output end (3) is arranged on the rear end face of the shell (2), and the high-frequency high-voltage direct-current power supply is characterized in that a protection component (4) for protecting the high-voltage output end (3) is arranged on the shell (2);
the protection component (4) comprises a fixed cylinder (401) fixedly arranged on the shell (2), a first telescopic cylinder (402) coaxial with the fixed cylinder (401) is movably arranged in the fixed cylinder, and a second telescopic cylinder (403) coaxial with the first telescopic cylinder (402) is movably arranged in the first telescopic cylinder.
2. A high frequency high voltage direct current power supply according to claim 1, characterized in that the protection assembly (4) further comprises a connecting rod unit, the connecting rod unit comprises a first connecting rod (404) rotatably mounted on the inner wall of the fixed cylinder (401), a second connecting rod (405) is rotatably mounted on the inner wall of the second telescopic cylinder (403), and a third connecting rod (406) and a fourth connecting rod (407) which are coaxial are rotatably mounted on the inner wall of the first telescopic cylinder (402); the ends of the first connecting rod (404) and the third connecting rod (406) are hinged, and the ends of the second connecting rod (405) and the fourth connecting rod (407) are hinged.
3. A high frequency high voltage direct current power supply according to claim 2, wherein the number of said link units is two, and two sets of link units are arranged symmetrically up and down.
4. A high frequency high voltage direct current power supply according to claim 3, characterized in that the rotational axes of the first (404), second (405) and third (406) links are parallel to each other and perpendicular to the axis of the stationary drum (401).
5. The high-frequency high-voltage direct current power supply according to claim 4, wherein the connecting rod unit further comprises a limiting rod (408) which is slidably arranged on the inner wall of the fixed cylinder (401) and is parallel to the axis of the fixed cylinder (401); the ends of the first connecting rod (404) and the third connecting rod (406) are rotatably installed on a first shaft seat (409), and the ends of the second connecting rod (405) and the fourth connecting rod (407) are rotatably installed on a second shaft seat (410); the limiting rod (408) penetrates through the first shaft seat (409) and the second shaft seat (410).
6. The high-frequency high-voltage direct current power supply according to claim 5, wherein the limiting rod (408) is a round rod, and the first shaft seat (409) and the second shaft seat (410) are provided with balls (411) in rolling fit with the limiting rod (408).
7. The high-frequency high-voltage direct-current power supply according to claim 6, wherein the limiting rod (408) is fixedly sleeved with a leather rope (412) with a circular cross section, a sealing ring (413) is fixedly arranged on the fixed cylinder (401) at a position corresponding to the leather rope (412), and the leather rope (412) penetrates through the sealing ring (413) and extends to the outside of the fixed cylinder (401); a winding drum (414) for winding the leather rope (412) is fixedly arranged on the outer wall of the fixed drum (401).
8. The high-frequency high-voltage direct current power supply according to claim 7, wherein annular grooves (415) are formed in the inner wall of the fixed cylinder (401) and the inner wall of the first telescopic cylinder (402), and annular rubber sheets (416) coaxial with the annular grooves (415) are arranged in the annular grooves (415).
9. The high-frequency high-voltage direct current power supply according to claim 8, wherein the fixed cylinder (401) and the first telescopic cylinder (402) are in clearance fit, and the first telescopic cylinder (402) and the second telescopic cylinder (403) are in clearance fit; the thickness of the annular rubber sheet (416) is smaller than the depth of the annular groove (415), and the annular rubber sheet (416) is fixedly inserted into the annular end face of the annular groove (415) far away from the shell (2); the outer walls of the first telescopic cylinder (402) and the second telescopic cylinder (403) are respectively provided with a squeezing ring (417) positioned in the corresponding annular groove (415).
10. The high-frequency high-voltage direct current power supply according to claim 9, wherein the annular end face, far away from the shell (2), of the second telescopic cylinder (403) is provided with an annular containing groove (418), a rubber ring (419) is slidably installed in the containing groove (418), the inner wall and the outer wall of the rubber ring (419) are attached to the containing groove (418), and water is filled in the containing groove (418).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311156827.7A CN117135862B (en) | 2023-09-08 | 2023-09-08 | High-frequency high-voltage direct-current power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311156827.7A CN117135862B (en) | 2023-09-08 | 2023-09-08 | High-frequency high-voltage direct-current power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117135862A true CN117135862A (en) | 2023-11-28 |
| CN117135862B CN117135862B (en) | 2024-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311156827.7A Active CN117135862B (en) | 2023-09-08 | 2023-09-08 | High-frequency high-voltage direct-current power supply |
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| Country | Link |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5023768A (en) * | 1989-11-24 | 1991-06-11 | Varian Associates, Inc. | High voltage high power DC power supply |
| CN207573247U (en) * | 2017-12-02 | 2018-07-03 | 上海誉腾电源设备有限公司 | A kind of high frequency high voltage dc power source device |
| CN212542287U (en) * | 2020-08-20 | 2021-02-12 | 辽宁道特凯力科技有限公司 | Protection device of high-frequency high-voltage optical relay |
-
2023
- 2023-09-08 CN CN202311156827.7A patent/CN117135862B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5023768A (en) * | 1989-11-24 | 1991-06-11 | Varian Associates, Inc. | High voltage high power DC power supply |
| CN207573247U (en) * | 2017-12-02 | 2018-07-03 | 上海誉腾电源设备有限公司 | A kind of high frequency high voltage dc power source device |
| CN212542287U (en) * | 2020-08-20 | 2021-02-12 | 辽宁道特凯力科技有限公司 | Protection device of high-frequency high-voltage optical relay |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117135862B (en) | 2024-04-16 |
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