CN114203400A - Intelligent oil supplementing device for transformer - Google Patents
Intelligent oil supplementing device for transformer Download PDFInfo
- Publication number
- CN114203400A CN114203400A CN202111497116.7A CN202111497116A CN114203400A CN 114203400 A CN114203400 A CN 114203400A CN 202111497116 A CN202111497116 A CN 202111497116A CN 114203400 A CN114203400 A CN 114203400A
- Authority
- CN
- China
- Prior art keywords
- oil
- transformer
- thick bamboo
- section
- supplementing device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000001502 supplementing effect Effects 0.000 title claims abstract description 30
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 27
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 27
- 241001330002 Bambuseae Species 0.000 claims description 27
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 27
- 239000011425 bamboo Substances 0.000 claims description 27
- 239000004814 polyurethane Substances 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 238000000605 extraction Methods 0.000 claims 2
- 239000013589 supplement Substances 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 115
- 238000009434 installation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000009469 supplementation Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention provides an intelligent oil supplementing device for a transformer, which comprises a transformer body, wherein a sealing cover is arranged at the top of the transformer body, a containing cylinder is arranged in the middle of the sealing cover, a sliding cylinder is connected in the containing cylinder in a sliding manner, a floating disc is arranged at the bottom of the sliding cylinder, an oil outlet hole for communicating the sliding cylinder is arranged in the middle of the floating disc, an oil inlet groove is arranged on one side of the upper part of the sliding cylinder, an S-shaped pipe is arranged at the top of the containing cylinder, an oil storage tank is arranged at one end, away from the containing cylinder, of the S-shaped pipe, and an oil supplementing piece is arranged at the top of the transformer body. When this internal transformer oil of transformer was not full, the floating plate was from the roll-off in the circular slot under the pulling of stay cord for the oil feed tank on the slide cartridge meets with the export of pipe chute, thereby hydraulic press oil in the oil conservator flows into the transformer body through the slide cartridge inner chamber and mends oil, and is more intelligent, makes oil level gaugember or other sensor electronic component still can mend oil operation after malfunctioning, and the practicality is better.
Description
Technical Field
The invention discloses an intelligent oil supplementing device for a transformer, and belongs to the field of transformer accessories.
Background
In order to improve the insulating, heat dissipating and arc extinguishing capabilities of the transformer, the transformer oil is usually added into the transformer, the transformer oil is mineral oil obtained by distillation and refining of natural petroleum, and the lubricating oil fraction in the petroleum is subjected to acid-base refining treatment to obtain a mixture of pure, stable, low-viscosity, good-insulation and good-cooling liquid natural hydrocarbons.
The intelligent oil supplementing device for the transformer is characterized in that transformer oil is supplemented into the transformer, power failure is conducted on the transformer in a traditional mode, then the transformer oil is directly added into the transformer, time and labor are wasted, an oil storage cabinet is generally arranged on an existing intelligent oil supplementing device, oil is supplemented when the transformer oil is consumed due to long-term use of the transformer, an oil level gauge, an electromagnetic valve and other elements are arranged in the oil storage cabinet, and the automatic oil supplementing function is affected due to the fact that the elements are prone to failure, insensitivity and the like after long-term use.
Disclosure of Invention
The invention aims to provide an intelligent oil supplementing device for a transformer, which aims to solve the problems in the background art, and provides a solution for solving the problem that the elements in the existing intelligent oil supplementing device are easy to malfunction after being used for a long time and influence oil supplementation.
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a transformer intelligence oil supplementing device, includes the transformer body, transformer body top is equipped with the closing cap, the closing cap middle part is equipped with and holds a section of thick bamboo, it has a smooth section of thick bamboo to hold a sliding connection, the floating plate is installed to smooth section of thick bamboo bottom, the floating plate middle part is equipped with the oil outlet that is used for the smooth section of thick bamboo of intercommunication, upper portion one side of smooth section of thick bamboo is equipped with the oil feed tank, it installs the S-shaped pipe to hold a section of thick bamboo top, the one end that the S-shaped pipe deviates from and holds a section of thick bamboo is equipped with the oil storage tank, oil supplementing spare is installed at transformer body top.
Further, mend oil spare including the oil conservator, the inclined plane structure of high left low right is established to the bottom one end of oil conservator, and the bottom one end of oil conservator is equipped with the support column, the support column bottom mounting is on the transformer body, the top one end of oil conservator is equipped with the oil supplementing mouth.
Further, the lower one end in oil conservator bottom is equipped with the pipe chute, the bottom one end of pipe chute is installed and is held on the section of thick bamboo, and the pipe chute is linked together with the inner chamber that holds a section of thick bamboo, the bottom of pipe chute is located the lateral wall that holds a section of thick bamboo and leans on the bottom position.
Further, a one-way exhaust valve is installed at the top of the oil storage tank, an oil discharge pipe is arranged at the bottom end of one side, which deviates from the S-shaped pipe, of the oil storage tank, and a switch valve is installed on the oil discharge pipe.
Further, the bottom symmetry both sides of floating plate all are equipped with the stay cord, the one end that the stay cord deviates from the floating plate is equipped with extension spring, extension spring deviates from the one end of stay cord and is equipped with the montant, the montant bottom mounting is in transformer body bottom.
Furthermore, the top one end of a slide cylinder is provided with a through hole communicated with the inner cavity of the slide cylinder, the end of the slide cylinder, which is deviated from the oil inlet groove, is provided with a limiting block, the side wall of the inner cavity of the accommodating cylinder is provided with a limiting groove, and the limiting block is in sliding connection with the limiting groove.
Furthermore, the inner cavity of the containing cylinder is divided into a first inner cavity and a second inner cavity which are wide at the top and narrow at the bottom, a blocking ring is arranged on the outer side of the upper part of the sliding cylinder, and the blocking ring is connected to the first inner cavity in a sliding mode.
Further, the floating disc is arranged and is made of polyurethane PU materials, a circular groove is formed in the top of the inner cavity of the transformer body, and the floating disc is connected in the circular groove in a clamping mode.
The invention has the beneficial effects that: follow the oil level through the floating disc and change fluctuation, it slides to be convenient for the floating disc to drive the slide cartridge and slide in holding a section of thick bamboo, when making this internal transformer oil of transformer sufficient, the floating disc joint is in the circular slot, simultaneously the export of pipe chute misplaces with the advance tank on the slide cartridge, thereby the export of pipe chute is closed to the lateral wall of slide cartridge, it is internal to prevent that hydraulic press oil in the oil conservator from continuing to pour into the transformer, this internal transformer oil of transformer is not full, the floating disc follows the roll-off in the circular slot under the pulling of stay cord, make advance tank on the slide cartridge meet with the export of pipe chute, thereby hydraulic press oil in the oil conservator can flow into this internal oil of supplementing of transformer through the slide cartridge inner chamber, it is more intelligent, make the oil level gaugember, still can carry out the oil supplementing operation after solenoid valve or other sensor electronic component failure, the practicality is better.
Through the S-shaped pipe that holds a section of thick bamboo top connection, when this internal transformer oil of transformer of being convenient for is heated the inflation, part hydraulic press oil flows into through the slide cartridge inner chamber and holds a section of thick bamboo and S-shaped intraductally, in the final flow direction oil storage tank, avoids this internal oil pressure of transformer too big potential safety hazard that causes, through one-way discharge valve, can carry out exhaust treatment in the oil storage tank, the S-shaped pipe can avoid the oil of oil storage tank to get into once more and hold this internal transformer oil of this internal pollution transformer of a section of thick bamboo and transformer.
Through the spring, be convenient for provide pulling force to the stay cord, avoid a smooth section of thick bamboo stagnation can't follow the condition that the oil level moved down in holding a section of thick bamboo for the floating disc accuracy reciprocates according to the oil level change, improves the accuracy.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic diagram of an intelligent oil supplementing device for a transformer according to the present invention;
FIG. 2 is a schematic diagram illustrating the installation of a spring in the intelligent oil supply device for a transformer according to the present invention;
FIG. 3 is a schematic view illustrating the installation of a floating plate in the intelligent oil supply device for a transformer according to the present invention;
FIG. 4 is a schematic view illustrating the installation of a sliding cylinder in the intelligent oil supply device for a transformer according to the present invention;
fig. 5 is an enlarged view of a portion a in fig. 1.
In the figure: 1-a transformer body; 2-sealing the cover; 3-a containment cylinder; 4-a slide cylinder; 5-floating plate; 6-oil outlet; 7-oil inlet tank; 8-S-shaped pipe; 9-oil storage tank; 10-an oil conservator; 11-a support column; 12-oil supplementing port; 13-inclined tube; 14-one-way exhaust valve; 15-oil drain pipe; 16-a switching valve; 17-a pull rope; 18-an extension spring; 19-a vertical rod; 20-a through hole; 21-a limiting block; 22-a limiting groove; 23-a first lumen; 24-a second lumen; 25-a baffle ring; 26-circular groove.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1, the present invention provides a technical solution: the utility model provides a transformer intelligence oil supplementing device, including transformer body 1, 1 top of transformer body is equipped with closing cap 2, 2 middle parts of closing cap are equipped with a holding cylinder 3, sliding connection has slide cartridge 4 in the holding cylinder 3, floating plate 5 is installed to slide cartridge 4 bottom, 5 middle parts of floating plate are equipped with the oil outlet 6 that is used for communicateing slide cartridge 4, upper portion one side of slide cartridge 4 is equipped with the oil feed tank 7, S-shaped pipe 8 is installed at holding cylinder 3 top, the one end that S-shaped pipe 8 deviates from holding cylinder 3 is equipped with and deposits oil tank 9, oil conservator 10 is installed at 1 top of transformer body, it reciprocates to follow the oil level change through floating plate 5, be convenient for floating plate 5 to drive slide cartridge 4 and slide from top to bottom in holding cylinder 3, one end through S-shaped pipe 8 is connected with oil conservator 9, when being convenient for fluid transformer oil inflation, carry out the storage of discharging unnecessary oil in the transformer.
As shown in fig. 2, the bottom symmetry both sides of floating plate 5 all are equipped with stay cord 17, the one end that stay cord 17 deviates from floating plate 5 is equipped with extension spring 18, extension spring 18 deviates from the one end of stay cord 17 and is equipped with montant 19, 19 bottom mounting of montant are in transformer body 1 bottom, through spring pulling stay cord 17, be convenient for restrict floating plate 5's position, floating plate 5 establishes to constitute by polyurethane PU material, 1 inner chamber top of transformer body is equipped with circular slot 26, floating plate 5 joint is in circular slot 26.
As shown in fig. 3 and fig. 4, top one end of the sliding barrel 4 is provided with a through hole 20 communicating with the inner cavity of the sliding barrel 4, one end of the sliding barrel 4 departing from the oil inlet groove 7 is provided with a limiting block 21, the inner cavity side wall of the accommodating barrel 3 is provided with a limiting groove 22, the limiting block 21 is in sliding connection in the limiting groove 22, and slides in the limiting groove 22 through the limiting block 21, so as to prevent the sliding barrel 4 from shifting when sliding in the accommodating barrel 3, the inner cavity of the accommodating barrel 3 is divided into a first inner cavity 23 and a second inner cavity 24 which are wide at the top and narrow at the bottom, the upper outer side of the sliding barrel 4 is provided with a baffle ring 25, the baffle ring 25 is in sliding connection with the first inner cavity 23, and slides in the first inner cavity 23 through the baffle ring 25, so as to limit the position of the sliding barrel 4, and avoid the sliding out of the accommodating barrel 3.
As shown in fig. 1 and 5: one end of the bottom of the oil conservator 10 is set to be an inclined plane structure with a high left and a low right, one end of the bottom of the oil conservator 10 is provided with a support column 11, the bottom end of the support column 11 is fixed on the transformer body 1, one end of the top of the oil conservator 10 is provided with an oil supplementing port 12, the oil conservator 10 is convenient for inputting standby transformer oil into the accommodating cylinder 3 through an inclined tube 13, the top of the oil storage tank 9 is provided with a one-way exhaust valve 14, the bottom end of one side of the oil storage tank 9, which is far away from the S-shaped tube 8, is provided with an oil discharge tube 15, the oil discharge tube 15 is provided with a switch valve 16, the transformer oil in the oil storage tank 9 is convenient for discharging and cleaning through the oil discharge tube 15, the lower end of the bottom of the oil conservator 10 is provided with the inclined tube 13, one end of the bottom of the inclined tube 13 is installed on the accommodating cylinder 3, the inclined tube 13 is communicated with the inner cavity of the accommodating cylinder 3, the bottom end of the side wall of the inclined tube 13 is close to the bottom end, through the inclined tube 13, the transformer oil can be conveniently input into the oil inlet groove 7 of the sliding cylinder 4.
The specific implementation mode is as follows: when the transformer body 1 consumes part of transformer oil, the oil level will drop, the floating disc 5 on the oil surface drives the sliding cylinder 4 to move downwards, the oil inlet groove 7 on the sliding cylinder 4 is communicated with the inclined tube 13, the transformer oil in the oil storage cabinet 10 flows into the oil inlet groove 7 from the inclined tube 13, the transformer oil finally flows into the transformer body 1 from the inner cavity of the sliding cylinder 4, the oil level in the transformer body 1 is increased, the floating disc 5 is finally clamped into the circular groove 26, the floating disc 5 pushes the sliding cylinder 4 upwards, the oil inlet groove 7 on the sliding cylinder 4 is dislocated with the inclined tube 13, thereby stopping the circulation of the transformer oil at the inclined tube 13, completing the oil supplementing operation, replacing the structure that the traditional electromagnetic valve and other elements control the opening or closing of the oil inlet, utilizing the characteristic that the floating disc 5 moves along with the change of the oil level, supplementing the oil when the oil level drops, stopping the oil supply when the transformer oil is sufficient, avoiding the condition that the electronic elements are easy to malfunction, the normal operation of the oil supplementing function is ensured.
When the transformer oil in the transformer body 1 is heated and expanded, the transformer oil in the transformer body 1 flows into the sliding cylinder 4 and the S-shaped pipe 8 from the oil outlet 6, and the transformer oil finally flows into the oil storage tank 9 from the S-shaped pipe 8, so that the oil pressure in the transformer body 1 is reduced, the potential safety hazard is prevented, and the safety performance is improved.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The utility model provides a transformer intelligence oil supplementing device, includes transformer body (1), transformer body (1) top is equipped with closing cap (2), its characterized in that: the utility model discloses a transformer, including a closing cap (2), closing cap (2) middle part is equipped with and holds a section of thick bamboo (3), it has slide cartridge (4) to hold an interior sliding connection of section of thick bamboo (3), floating plate (5) are installed to slide cartridge (4) bottom, floating plate (5) middle part is equipped with oil outlet (6) that are used for communicateing slide cartridge (4), upper portion one side of slide cartridge (4) is equipped with oil feed tank (7), it installs S-shaped pipe (8) to hold a section of thick bamboo (3) top, the one end that S-shaped pipe (8) deviate from and hold a section of thick bamboo (3) is equipped with oil storage tank (9), oil supplement spare is installed at transformer body (1) top.
2. The intelligent oil supplementing device for the transformer according to claim 1, wherein: mend oily piece including oil conservator (10), the inclined plane structure of high left and low right is established to the bottom one end of oil conservator (10), and the bottom one end of oil conservator (10) is equipped with support column (11), support column (11) bottom mounting is on transformer body (1), the top one end of oil conservator (10) is equipped with mends hydraulic fluid port (12).
3. The intelligent oil supplementing device for the transformer according to claim 2, wherein: the lower one end in oil conservator (10) bottom is equipped with pipe chute (13), the bottom one end of pipe chute (13) is installed and is being held a section of thick bamboo (3), and pipe chute (13) and the inner chamber that holds a section of thick bamboo (3) are linked together, the bottom of pipe chute (13) is located the lateral wall that holds a section of thick bamboo (3) and leans on the bottom position.
4. The intelligent oil supplementing device for the transformer according to claim 1, wherein: one-way exhaust valve (14) are installed at oil storage tank (9) top, and oil storage tank (9) deviates from one side bottom of S-shaped pipe (8) and is equipped with oil extraction pipe (15), install ooff valve (16) on oil extraction pipe (15).
5. The intelligent oil supplementing device for the transformer according to claim 1, wherein: the bottom symmetry both sides of floating plate (5) all are equipped with stay cord (17), the one end that stay cord (17) deviate from floating plate (5) is equipped with extension spring (18), the one end that extension spring (18) deviate from stay cord (17) is equipped with montant (19), montant (19) bottom mounting is in transformer body (1) bottom.
6. The intelligent oil supplementing device for the transformer according to claim 1, wherein: the top one end of a smooth section of thick bamboo (4) is equipped with and holds a communicating through-hole (20) of section of thick bamboo (3) inner chamber, and the one end that smooth section of thick bamboo (4) deviates from oil feed tank (7) is equipped with stopper (21), be equipped with spacing groove (22) on the inner chamber lateral wall that holds a section of thick bamboo (3), stopper (21) sliding connection in spacing groove (22).
7. The intelligent oil supplementing device for the transformer according to claim 1, wherein: the inner cavity of the accommodating cylinder (3) is divided into a first inner cavity (23) and a second inner cavity (24), the upper portion of the sliding cylinder (4) is wide, the lower portion of the sliding cylinder is narrow, a blocking ring (25) is arranged on the outer side of the upper portion of the sliding cylinder, and the blocking ring (25) is connected to the first inner cavity (23) in a sliding mode.
8. The intelligent oil supplementing device for the transformer according to claim 1, wherein: floating plate (5) are established and are constituted by polyurethane PU material, transformer body (1) inner chamber top is equipped with circular slot (26), floating plate (5) joint is in circular slot (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111497116.7A CN114203400B (en) | 2021-12-09 | 2021-12-09 | Intelligent oil supplementing device for transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111497116.7A CN114203400B (en) | 2021-12-09 | 2021-12-09 | Intelligent oil supplementing device for transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114203400A true CN114203400A (en) | 2022-03-18 |
| CN114203400B CN114203400B (en) | 2024-01-30 |
Family
ID=80651506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111497116.7A Active CN114203400B (en) | 2021-12-09 | 2021-12-09 | Intelligent oil supplementing device for transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114203400B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680834A (en) * | 2013-12-10 | 2014-03-26 | 江山市海维输变电科技有限公司 | Transformer oil conservator with piston structure |
| CN205140688U (en) * | 2015-11-20 | 2016-04-06 | 申恒电力设备有限公司 | Oil -immersed transformer |
| CN210272008U (en) * | 2019-08-15 | 2020-04-07 | 南安市三落工业设计有限公司 | Fully-sealed oil-immersed power transformer |
| CN112121526A (en) * | 2020-09-29 | 2020-12-25 | 杭州广韪科技有限公司 | Computer oil cooler case transformer oil clarification plant for network development |
-
2021
- 2021-12-09 CN CN202111497116.7A patent/CN114203400B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680834A (en) * | 2013-12-10 | 2014-03-26 | 江山市海维输变电科技有限公司 | Transformer oil conservator with piston structure |
| CN205140688U (en) * | 2015-11-20 | 2016-04-06 | 申恒电力设备有限公司 | Oil -immersed transformer |
| CN210272008U (en) * | 2019-08-15 | 2020-04-07 | 南安市三落工业设计有限公司 | Fully-sealed oil-immersed power transformer |
| CN112121526A (en) * | 2020-09-29 | 2020-12-25 | 杭州广韪科技有限公司 | Computer oil cooler case transformer oil clarification plant for network development |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114203400B (en) | 2024-01-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106678405B (en) | high pressure self-closing valve | |
| CN201215210Y (en) | Piston type solenoid valve | |
| CN114203400A (en) | Intelligent oil supplementing device for transformer | |
| CN201795126U (en) | Automatic water draining valve | |
| CN206723470U (en) | A kind of regulating valve | |
| CN100560990C (en) | Be used for the oil tank liquid level mechanical proportional balancing valve of control automatically | |
| CN102494177B (en) | Automatic special valve arranged on pressure bearing water storage equipment | |
| CN101348229B (en) | Filling pipe with anti-overflow system | |
| CN109654260B (en) | Flow control valve for hydraulic engineering | |
| CN208123568U (en) | A kind of valve convenient for safeguarding | |
| CN203363296U (en) | Flow liquid air blocking valve | |
| CN209084070U (en) | A kind of gas-heating water heater triple valve | |
| CN211975968U (en) | Plug-in type large-flow two-position three-way electro-hydraulic reversing valve | |
| CN208935526U (en) | Fluid level controller and its tank level control system | |
| CN101936399A (en) | Two-stage feedback type automatic valve | |
| CN219796148U (en) | Pressure-bearing tap | |
| CN212429923U (en) | Pool double-liquid-level control device | |
| CN219013365U (en) | One-inlet four-outlet large-flow electromagnetic valve | |
| CN219809761U (en) | Automatic lubricating oil recycling device | |
| CN201187613Y (en) | Mechanical proportional balance valve for oil tank liquid level automatic control | |
| CN201268573Y (en) | Filling pipe with anti-overflow system | |
| CN220870187U (en) | Remote control ball cock with adjustable filter | |
| CN214838653U (en) | Switch structure of sewage conveying pipeline | |
| CN212131389U (en) | Novel linkage valve | |
| CN216479598U (en) | Differential water outlet mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |