CN116669358B - High-voltage power supply - Google Patents

Abstract

The application relates to the field of high-voltage power supply, in particular to a high-voltage power supply, which comprises a shell, a bulb and a transformer and an upper cover, wherein the transformer and the upper cover are arranged in the shell and are used for providing high voltage for the bulb, an injection groove is formed in the upper cover, an oil injection hole communicated with the inner cavity of the shell is formed in the bottom of the inner cavity of the injection groove, a sealing structure used for plugging the oil injection hole is arranged in the injection groove, an embedding groove used for embedding a sealing ring is formed on the upper side of the shell around the edge of the injection groove, drain bosses are uniformly formed on the upper side of the shell at intervals, a cleaning gap connected end to end is formed between the upper cover and the shell when the upper cover is arranged on the drain bosses, the embedding groove is positioned on the inner side of the cleaning gap, and after oil injection is completed, the high-voltage air flow is blown out of the cleaning gap by using a high-voltage blowing gun, so that residual oil is completely treated, and misjudgment of workers is reduced.

Description

High-voltage power supply

Technical Field

The application relates to the field of high-voltage power supply, in particular to a high-voltage power supply.

Background

The high-voltage power supply has the function of providing high voltage for the positive electrode and the negative electrode of the bulb tube to enable the bulb tube to generate X rays, however, in the high-voltage power supply manufacturing industry process, high-voltage insulation is one of very critical indexes, reliability and service life of products are directly related, and the reasonable insulation design can prevent the products from generating high-voltage ignition and improve the reliability of the products. Meanwhile, for a high-voltage product adopting liquid insulation, the tightness is a very critical index, and whether the product is well sealed or not is accurately and timely judged, and is also very critical for the reliability of the product.

Under the vacuum condition, insulating oil is filled into the cavity, part of insulating oil is inevitably remained outside the two sealing surfaces in the oiling and sealing process, after the oil tank is assembled, the part of insulating oil is difficult to thoroughly clean, and as time goes by, the part of residual oil gradually seeps out along the sealing surfaces, so that operators cannot accurately judge whether oil leakage really occurs in the product.

Disclosure of Invention

In order to enable operators to accurately judge oil leakage positions, the application provides a high-voltage power supply.

The application provides a high-voltage power supply, which adopts the following technical scheme:

the utility model provides a high-voltage power supply, includes casing, bulb, installs in the casing and is used for supplying transformer, upper cover of pressing to the bulb, the injection groove has been seted up to the upper cover, the oil filler point with casing inner chamber intercommunication has been seted up to the inner chamber bottom of injection groove, be provided with the seal structure who is used for shutoff oil filler point in the injection groove, the caulking groove that is used for inlaying the sealing washer is seted up around its edge to the casing upside, the upside interval uniform shaping of casing has the drainage boss, establishes on the drainage boss when the upper cover for be formed with end to end's clearance gap between upper cover and the casing, the caulking groove is located clearance gap inboard.

Through adopting above-mentioned technical scheme, the in-process of oiling in the oil tank equipment after accomplishing and to the oil filler point is because insulating oil needs to be full of between whole casing and the upper cover to the in-process of oiling is difficult to have residual oil between upper cover and casing, especially the sealed clearance department of laminating between upper cover and the casing, namely clearance's position, through setting up excreteing the boss, after the oiling is accomplished, uses high-pressure blowing rifle to blow out high-pressure air current to clearance, thereby handles the residual oil clean, wipes when necessary.

Optionally, upper cover laminating clearance one side is provided with the sealed gasbag that is used for extrudeing clearance residual oil, be provided with the inlet structure that is used for supplying air to sealed gasbag in the injection groove, still be provided with the structure of blowing that is used for blowing to clearance in the injection groove.

Through adopting above-mentioned technical scheme, can realize clearing up the residual oil in the clearance through the structure of blowing, simultaneously through the air inlet structure to the interior air feed of sealed gasbag, promote the leakproofness between two sealed faces on the one hand, on the other hand extrudees the residual oil in the clearance, reduces the stay of residual oil, reduces the phenomenon of staff erroneous judgement.

Optionally, a plurality of first connecting hole has evenly been seted up to the interval on the upper cover upper surface, first connecting hole runs through the casing edge, first connecting hole is through the clearance, a plurality of second connecting hole has evenly been seted up to the interval on the upper cover upper surface, the second connecting hole runs through excreteing the boss and wears out outside the casing, the shaping has the hole of dodging that is used for first connecting hole and second connecting hole to pass on the sealed gasbag, the mounting groove that is used for installing sealed gasbag has been seted up on the lateral wall of upper cover.

Through adopting above-mentioned technical scheme, the bolt passes first connecting hole and is used for connecting apron and casing, and the bolt also can pass the second connecting hole and be used for being connected the part of casing and upper cover top, dodges the hole and has perfectly dodged the wearing of bolt and establish.

Optionally, the air inlet structure includes the inlet port of seting up on the injection groove inner wall, installs the intake pipe in the inlet port, sets up the valve core that keeps away from sealed gasbag one end at the intake pipe, the sealed gasbag of intake pipe intercommunication, the one end in the inlet port intercommunication injection groove is provided with first plug.

The known insulating oil can be remained on the two sealing surfaces, on the one hand, the insulating oil can possibly be carelessly left, on the other hand, the defect of sealing performance in the assembly process can possibly be described, so that in order to reduce the oil leakage condition, the valve core is inflated by adopting the technical scheme, so that the air inlet pipe guides air flow into the sealing air bag, the clearance is further sealed, the oil liquid remained in the clearance can be extruded in the expansion process of the sealing air bag, and the oil leakage position is ensured to be clearly judged by subsequent staff.

Optionally, the structure of blowing is including seting up the air vent on the injection groove inner wall, interval evenly sets up the air vent on the upper cover, the air vent is linked together with the air vent, the air vent sets up between first connecting hole and second connecting hole, the air current direction of air vent is the slope setting towards the casing outside, just the air vent is located between caulking groove and the clearance, the one end that the air vent was kept away from to the air vent is provided with the second plug.

Through adopting above-mentioned technical scheme, the sealed in-process of oiling can be unavoidable and remain partial insulating oil outside two sealed faces, after the oil tank equipment is accomplished, this part insulating oil hardly by thoroughly clean up, be linked together through external tracheal air cock and air vent this moment for the air current blows to the clearance along the air vent, thereby makes the clearance that is located between two sealed faces be difficult to residual fluid, ensures follow-up staff's judgement.

Optionally, the seal structure includes the coaxial screw thread cover that sets up in the injection groove, the coaxial annular plate that sets up in the screw thread cover inboard, the annular plate is fixed on the injection groove diapire, be formed with the annular between annular plate and the screw thread cover, the outside of screw thread cover also takes shape and has the screw thread.

By adopting the technical scheme, the sealing performance of the oil filling hole is improved by the thread sleeve with double-sided threads, and residual oil is left in the annular groove in the oiling process, so that the residual oil is difficult to flow out of the thread sleeve.

Optionally, a support is arranged in the shell, the support is located between the bulb and the transformer, a first insulating plate and a second insulating plate are arranged on the support, the first insulating plate, the second insulating plate and the support form a wrapping cavity, the transformer is located in the wrapping cavity, and the bulb is located above the second insulating plate.

Through adopting above-mentioned technical scheme, first insulation board installs between transformer and casing, and the second insulation board is installed between transformer and bulb for the bulb forms insulatively with part around through first insulation board and second insulation board, because the transformer can produce kilovolt high voltage, thereby also need ensure to form between transformer and the casing and insulate.

Optionally, the radiator is installed to the positive pole of bulb, the tip of bulb is provided with the third insulation board, and the third insulation board is fixed on the support, the radiator is located third insulation board and faces bulb one side, the one end that the third insulation board deviates from the radiator is provided with the expander for adjust casing internal pressure.

By adopting the technical scheme, the heat dissipation capacity of the bulb is enhanced, and insulation with surrounding parts is realized by arranging the third insulating plate; after the bulb and the transformer work for a long time, a large amount of heat is easy to generate, the shell and other structures are metal parts, and the internal pressure is regulated through the expansion and contraction device so as to prevent cracking.

In summary, the present application includes at least one of the following beneficial technical effects:

under the condition of guaranteeing insulation requirements, through setting up the boss that excretes, after the oiling is accomplished, use high-pressure to blow out high-pressure air current to clearance to handle the residual oil cleanly, wipe when necessary, thereby reduce the staff and to the erroneous judgement of residual oil.

Drawings

Fig. 1 is a schematic overall structure of the first embodiment.

Fig. 2 is a sectional view of a housing of the first embodiment.

Fig. 3 is a schematic diagram of a cover plate in the second embodiment.

Fig. 4 is a schematic view of a cover plate portion in the second embodiment, mainly for showing the avoidance hole.

Fig. 5 is a cross-sectional view of the cover plate in the second embodiment, mainly for showing the air inlet pipe and the air blowing hole.

Reference numerals: 1. a housing; 2. a bulb tube; 3. a transformer; 4. an upper cover; 5. an injection groove; 6. an oil filling hole; 7. a seal ring; 8. a caulking groove; 9. a drainage boss; 10. cleaning the gap; 11. sealing the air bag; 12. an air intake structure; 13. a blowing structure; 14. a first connection hole; 15. a second connection hole; 16. avoidance holes; 17. a mounting groove; 18. an air inlet hole; 19. an air inlet pipe; 20. a valve core; 21. a first rubber plug; 22. an air guide hole; 23. a blow hole; 24. a second rubber plug; 25. a thread sleeve; 26. an annular plate; 27. a ring groove; 28. a bracket; 29. a first insulating plate; 30. a second insulating plate; 31. a heat sink; 32. a third insulating plate; 33. a collapsible device.

Detailed Description

The application is described in further detail below with reference to fig. 1-5.

Embodiment one:

the embodiment of the application discloses a high-voltage power supply.

Referring to fig. 1, a high-voltage power supply includes a housing 1, a bulb 2, a transformer 3, and an upper cover 4, wherein the housing 1 and the upper cover 4 are both made of metal, and the bulb 2 and the transformer 3 are installed in the housing 1. The transformer 3 is mainly used for generating positive and negative high kilovolt voltages and supplying the voltages to the bulb 2 so that the bulb 2 generates X-rays.

Referring to fig. 1, a bracket 28 is fixedly installed in a case 1, a first insulating plate 29 and a second insulating plate 30 are installed on the bracket 28, and the first insulating plate 29, the second insulating plate 30 and the bracket 28 form a wrapping cavity to wrap a transformer 3. A first insulating plate 29 is installed between the transformer 3 and the housing 1, and a second insulating plate 30 is installed between the transformer 3 and the bulb 2.

Referring to fig. 1, in order to enhance the performance of the bulb 2, a radiator 31 is installed at the anode end of the bulb 2 to enhance the heat radiation capability of the bulb 2. In order to meet the insulation requirement, an insulation structure needs to be designed near the heat sink 31 to realize insulation from surrounding parts. For this purpose, a third insulating plate 32 is also provided on the support 28, so that the third insulating plate 32, the second insulating plate 30 and the support 28 encapsulate the bulb 2, thereby insulating from surrounding components.

Referring to fig. 1, after the bulb 2 and the transformer 3 are operated for a long time, a large amount of heat is easily generated, the casing 1 and other structures are metal members, and in order to prevent explosion caused by excessive pressure inside the casing 1, a collapsible device 33 is arranged on one side of the third insulating plate 32, which is away from the radiator 31, and the collapsible device 33 is mainly used for adjusting the pressure inside the casing 1.

Referring to fig. 1, a reasonable insulation design can prevent the product from generating high-voltage ignition and improve the reliability of the product. Meanwhile, for a high-voltage product adopting liquid insulation, the tightness is a very critical index, and whether the product is well sealed or not is accurately and timely judged, and is also very critical for the reliability of the product. In order to facilitate the oil injection of the staff into the shell 1, the injection groove 5 is formed in the upper cover 4, the oil injection hole 6 is formed in the bottom of the inner cavity of the injection groove 5, and the known high-voltage insulating shell 1 is faced with the oil leakage problem, so that the insulation inside the shell 1 fails, the normal work of a product is affected, and even the product is damaged, so that it is very important to accurately position the oil leakage position in time.

Referring to fig. 1, when oiling, the oil is injected into the shell 1 from the oil injection hole 6 of the upper cover 4, part of insulating oil is inevitably remained outside the two sealing surfaces of the upper cover 4 and the shell 1 in the oiling and sealing process, after the oil tank is assembled, the part of insulating oil is difficult to thoroughly clean, and as time goes by, the part of residual oil gradually seeps out along the sealing surfaces, so that operators cannot accurately judge whether the oil leakage of the product actually occurs.

Referring to fig. 2, for this purpose, a caulking groove 8 is formed around the edge of the upper side of the housing 1, the caulking groove 8 is connected end to end, and an insulating rubber seal 7 is installed in the caulking groove 8, so that the tightness between the upper cover 4 and the housing 1 is enhanced, and leakage of insulating oil is difficult to occur.

Referring to fig. 1, in the process of production and assembly, it is necessary to attach the upper cover 4 to the housing 1, and for this purpose, a plurality of first connection holes 14 are formed in the upper cover 4, and the first connection holes 14 penetrate through the edge of the housing 1. Meanwhile, a second connecting hole 15 is also formed in the upper cover 4, and the second connecting hole 15 also penetrates through the edge of the shell 1; annular drain bosses 9 are uniformly formed at intervals on the upper side of the housing 1, the drain bosses 9 and the second connection holes 15 are coaxially arranged, and each second connection hole 15 passes through a single annular drain boss 9.

Referring to fig. 1 and 2, when the upper cover 4 is covered on the housing 1, due to the effect of the drainage boss 9, a cleaning gap 10 is generated between the upper cover 4 and the housing 1, the cleaning gap 10 is just located between two sealing surfaces, insulating oil is easy to remain at the part of the cleaning gap 10 in the process of oil tank assembly and oil injection, and a high-pressure air gun or a wiping cloth is generally adopted to wipe the cleaning gap 10, so that residual oil is reduced, an operator can timely and accurately identify product faults, and other components are prevented from being damaged due to oil leakage of the oil tank.

Embodiment two:

referring to fig. 3, the second embodiment is different from the first embodiment in that: the lid alright be with the oil filler point 6 shutoff through covering in general, in order to ensure the leakproofness of shutoff, still be provided with seal structure in injection groove 5, seal structure includes thread bush 25 and annular plate 26, the screw thread is all seted up to the internal and external face of thread bush 25, the coaxial fixing of thread bush 25 is in injection groove 5, annular plate 26 sets up the inboard at thread bush 25 coaxially, be formed with annular 27 between annular plate 26 and the thread bush 25, oil filler point 6 is located annular plate 26, the leakproofness of oil filler point 6 has further been strengthened to the double-sided screw thread.

Referring to fig. 2 and 4, in order to more conveniently treat the residual oil at the cleaning gap 10, a sealing air bag 11 for extruding the residual oil at the cleaning gap 10 is arranged on one side of the upper cover 4, which is attached to the cleaning gap 10, an end-to-end connecting installation groove 17 is formed on the bottom surface of the edge of the upper cover 4, the sealing air bag 11 is installed in the installation groove 17, and a first connecting hole 14 and a second connecting hole 15 are known, and in order to ensure the normal operation of the sealing air bag 11 and not to interfere with the related connecting bolt, a avoiding hole 16 for avoiding the first connecting hole 14 and the second connecting hole 15 is formed on the sealing air bag 11.

Referring to fig. 4 and 5, an air inlet structure 12 for supplying air to the sealed air bag 11 is arranged in the injection groove 5, the air inlet structure 12 comprises an air inlet hole 18, an air inlet pipe 19 and a valve core 20, the air inlet hole 18 is formed in the inner wall of the injection groove 5, the air inlet hole 18 is communicated with the mounting groove 17, the air inlet pipe 19 is arranged in the air inlet hole 18, one end of the air inlet pipe 19 is communicated with the sealed air bag 11, and the other end of the air inlet pipe is positioned in the injection groove 5 and connected with the valve core 20. From there, the valve core 20 is inflated by the air pump, so that the air flow enters the sealing air bag 11 through the air inlet pipe 19, and the sealing air bag 11 expands to squeeze the cleaning gap 10. A first rubber plug 21 is also arranged in the injection groove 5 and is used for plugging the port of the valve core 20.

Referring to fig. 2, 3 and 5, an air blowing structure 13 for blowing air to the cleaning gap 10 is further arranged in the injection groove 5, the air blowing structure 13 comprises an air hole 22 and air holes 23, the number of the air holes 22 is one, the number of the air holes 23 is several, the several air holes 23 are all communicated with the air holes 22, and a second rubber plug 24 for plugging the air holes 22 is arranged at one end of the air holes 22, which is communicated with the injection groove 5. One end of the air blowing hole 23, which is far away from the air guiding hole 22, is communicated with the bottom surface of the upper cover 4, and is positioned between the first connecting hole 14 and the second connecting hole 15. The air outlet direction of the air blowing hole 23 is inclined toward the outside of the housing 1.

Referring to fig. 2 and 5, when the insulating oil tank is assembled and the oil is injected, the air nozzle of the air gun is communicated with one end of the air guide hole 22 in the injection groove 5, so that the high-pressure air flow is dispersed into the plurality of air blowing holes 23, and finally the oil remained in the cleaning gap 10 is blown out.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (4)

1. The utility model provides a high voltage power supply, includes casing (1), bulb (2), installs transformer (3), upper cover (4) that are used for providing high voltage to bulb (2) in casing (1), its characterized in that: an injection groove (5) is formed in the upper cover (4), an oil injection hole (6) communicated with the inner cavity of the shell (1) is formed in the bottom of the inner cavity of the injection groove (5), a sealing structure used for sealing the oil injection hole (6) is arranged in the injection groove (5), a caulking groove (8) used for embedding a sealing ring (7) is formed in the upper side of the shell (1) around the edge of the injection groove, a drainage boss (9) is uniformly formed in the upper side of the shell (1) at intervals, when the upper cover (4) is arranged on the drainage boss (9) in a covering manner, a cleaning gap (10) connected end to end is formed between the upper cover (4) and the shell (1), the caulking groove (8) is positioned at the inner side of the cleaning gap (10), a sealing air bag (11) used for extruding and cleaning residual oil in the gap (10) is arranged on one side of the upper cover (4), an air inlet structure (12) used for embedding the sealing air bag (11) is formed in the injection groove (5), an upper cover (4) is further arranged in the injection groove (5), a plurality of air blowing holes (14) are formed in the upper cover (14) and evenly connected with the first connecting holes (14) through the first connecting surfaces (14), the upper surface of the upper cover (4) is uniformly provided with a plurality of second connecting holes (15) at intervals, the second connecting holes (15) penetrate through the drainage boss (9) and penetrate out of the shell (1), the sealing air bag (11) is provided with an avoidance hole (16) used for the first connecting holes (14) and the second connecting holes (15) to penetrate through, the side wall of the upper cover (4) is provided with a mounting groove (17) used for mounting the sealing air bag (11), the air inlet structure (12) comprises an air inlet hole (18) formed in the inner wall of the injection groove (5), an air inlet pipe (19) arranged in the air inlet hole (18) and a valve core (20) arranged at one end of the air inlet pipe (19) far away from the sealing air bag (11), the air inlet pipe (19) is communicated with the sealing air bag (11), one end of the air inlet hole (18) in the injection groove (5) is provided with a first rubber plug (21), the air blowing structure (13) comprises an air guide hole (22) formed in the inner wall of the injection groove (5) and an air guide hole (23) formed in the upper cover (4) at intervals, the air guide hole (23) is uniformly arranged between the air guide hole (23) and the air guide hole (23) is communicated with the first air guide hole (14), the air flow direction of the air blowing hole (23) is inclined towards the outside of the shell (1), the air blowing hole (23) is positioned between the caulking groove (8) and the cleaning gap (10), and a second rubber plug (24) is arranged at one end, far away from the air blowing hole (23), of the air guiding hole (22).

2. A high voltage power supply according to claim 1, characterized in that: the sealing structure comprises a threaded sleeve (25) coaxially arranged in the injection groove (5), and an annular plate (26) coaxially arranged on the inner side of the threaded sleeve (25), wherein the annular plate (26) is fixed on the bottom wall of the injection groove (5), a ring groove (27) is formed between the annular plate (26) and the threaded sleeve (25), and threads are formed on the outer side of the threaded sleeve (25).

3. A high voltage power supply according to claim 1, characterized in that: be provided with support (28) in casing (1), support (28) are located between bulb (2) and transformer (3), support (28) facial make-up is equipped with first insulation board (29) and second insulation board (30), first insulation board (29) and second insulation board (30) and support (28) form the parcel cavity, transformer (3) are located the parcel cavity, bulb (2) are located the top of second insulation board (30).

4. A high voltage power supply according to claim 3, characterized in that: the radiator is characterized in that the radiator (31) is arranged on the anode of the bulb tube (2), a third insulating plate (32) is arranged at the end part of the bulb tube (2), the third insulating plate (32) is fixed on the support (28), the radiator (31) is located on one side, facing the bulb tube (2), of the third insulating plate (32), and a swelling and shrinking device (33) is arranged at one end, facing away from the radiator (31), of the third insulating plate (32) and used for adjusting the internal pressure of the shell (1).