CN210219320U - Mobile sulfur hexafluoride gas-filling device - Google Patents
Mobile sulfur hexafluoride gas-filling device Download PDFInfo
- Publication number
- CN210219320U CN210219320U CN201920886154.3U CN201920886154U CN210219320U CN 210219320 U CN210219320 U CN 210219320U CN 201920886154 U CN201920886154 U CN 201920886154U CN 210219320 U CN210219320 U CN 210219320U
- Authority
- CN
- China
- Prior art keywords
- pipe section
- sulfur hexafluoride
- steel cylinder
- gas
- unit
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model discloses a mobile sulfur hexafluoride gas filling device, which is characterized by comprising a vehicle body, a steel bottle bracket, a heating unit, a gas filling pipeline, a control unit and a power supply unit, wherein the steel bottle bracket is connected with the vehicle body in a turnover way and is used for supporting a steel bottle; the gas charging pipeline comprises a first pipe section provided with a pressure reducing valve, a second pipe section arranged around the steel cylinder bracket and covered by the heating unit, and a third pipe section used for connecting gas charging equipment, wherein the third pipe section is provided with a temperature detection unit, an air pressure detection unit and an electromagnetic valve; the temperature detection unit is electrically connected with the control unit, and the air pressure detection unit is electrically connected with the electromagnetic valve. The utility model provides a portable sulfur hexafluoride aerating device, it is high, can effectively guarantee to fill the SF in the equipment to have steel bottle gas utilization ratio6The gas purity and the like, and can be flexibly applied to the operation sites of electrical equipment maintenance, operation and maintenance and the like.
Description
Technical Field
The utility model relates to a high-voltage electrical equipment overhauls technical field, concretely relates to with a portable sulfur hexafluoride aerating device.
Background
Sulfur hexafluoride (SF)6) The gas is widely applied to the power industry due to good insulating property and arc extinguishing property, and the higher the quality and purity of the gas is, the better the insulating property is. In general, as the usage time of the device increases, the SF in the device6The quality and purity of the arc is reduced, and the arc extinguishing capability is reduced. Therefore, in order to maintain the desired insulation of the equipment and to ensure safe production, in SF6The necessary inflation must be carried out in time for installation and routine maintenance of the insulation equipment.
At present, direct inflation is generally adopted on site for equipment needing inflation. The direct inflation method is based on the inflation process of the environment temperature difference and the pressure difference inside and outside the steel cylinder. Suppose that the pressure of a steel cylinder is represented by P1, and the pressure of the air in the equipment to be inflated is represented by P2, and the steel cylinder and the equipment are connected through an inflation connector. At the beginning of charging, SF in the steel cylinder6From a high pressure liquid state to a low pressure gaseous state, the volume expands rapidly and absorbs a large amount of heat from the surrounding environment, at which point P1>P2, SF in steel cylinder6Gas is filled into the device; the charging process is continued, the P1 is gradually reduced, the P2 is continuously increased, and the charging is automatically stopped when the P1 is equal to P2, namely the air pressure of the steel cylinder at the joint is balanced with the air pressure in the equipment.
Because the prior gas charging method has no external heat source or external pressurization assistance, the SF is realized by completely depending on the environmental temperature difference and the pressure difference inside and outside the steel cylinder6The gas is vaporized and output, and when the gas is inflated to a certain degree, the inflation work can not be continued, so that SF in the bottle is caused6Useless loss of different degrees occurs, and the inflation cost is directly improved; and SF6Incomplete vaporisation, liquid SF on inflation6The mixture may be mixed into the equipment, and the electric equipment may be damaged.
In view of the above, it is necessary to provide a new sulfur hexafluoride gas filling device to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a portable sulfur hexafluoride aerating device, have steel bottle gasHigh utilization rate and capability of effectively ensuring the filling of SF in the equipment6The gas purity and the like, and can be flexibly applied to the operation sites of electrical equipment maintenance, operation and maintenance and the like.
In order to solve the above problem, the technical scheme of the utility model is as follows:
a movable sulfur hexafluoride gas charging device comprises a vehicle body, a steel cylinder bracket, a heating unit, a gas charging pipeline, a control unit and a power supply unit, wherein the steel cylinder bracket is connected with the vehicle body in a turnover mode and used for supporting a steel cylinder;
the gas charging pipeline comprises a first pipe section, a second pipe section and a third pipe section, wherein the first pipe section is provided with a pressure reducing valve, one end of the first pipe section is connected with the steel cylinder, the second pipe section is connected with the first pipe section, is arranged around the steel cylinder bracket and is covered by the heating unit, the third pipe section is connected with the second pipe section and is used for connecting gas charging equipment, and the third pipe section is provided with a temperature detection unit, an air pressure detection unit and an electromagnetic valve;
the temperature detection unit is electrically connected with the control unit, and the control unit controls the working state of the heating unit; the air pressure detection unit is electrically connected with the electromagnetic valve.
Further, the device also comprises a metering unit for metering the air inflation amount.
Furthermore, the metering unit is a metering scale arranged at the bottom of the vehicle body.
Further, steel bottle bracket opening is the U type, the heating unit includes encircles the heating member that the steel bottle bracket set up, the heating member covers the second pipeline section.
Further, the second pipe sections are arranged in an S shape.
Furthermore, an air inflation joint is arranged at the end part of the third pipe section, and the air inflation joint is a check valve quick-connection plug.
Furthermore, an air cooler is arranged on the first pipe section and behind the pressure reducing valve, and the air cooler is electrically connected with the control unit.
Furthermore, the gas charging pipeline is made of stainless steel materials or polytetrafluoroethylene materials.
Furthermore, the steel cylinder fixing device is connected with the steel cylinder bracket and used for fixing the steel cylinder.
Further, the fixing device comprises an annular hoop and a locking device for connecting the annular hoop and the steel cylinder bracket.
Compared with the prior art, the utility model provides a portable sulfur hexafluoride aerating device, beneficial effect lies in:
the utility model provides a portable sulfur hexafluoride aerating device, the steel bottle bracket that will support the steel bottle designs into flip structure, just puts into immediately when placing the steel bottle, overturns the steel bottle bracket during aerifing, and the preparation is aerifyd to the compliance standard, and accords with the regulation requirement. A heating unit is arranged at the steel cylinder bracket and is used for heating SF in the steel cylinder6Medium to make SF in the steel cylinder6The liquid is accelerated to be vaporized under the action of the heating unit; on the other hand for heating SF in gas-filled lines6Medium of SF6The medium is completely vaporized in the gas charging pipeline, thereby ensuring the effective operation of gas charging, improving the gas charging efficiency and the utilization rate of the steel cylinder gas, and preventing the liquid SF6And the mixing of the particles into the equipment may damage the electrical equipment.
Secondly, the movable sulfur hexafluoride gas-filling device provided by the utility model has the advantages that the gas-filling pipeline is made of stainless steel material or polytetrafluoroethylene material, and has the characteristic of sealing performance; and the tail end of the inflation tube is provided with a check valve quick connector, so that SF can be effectively prevented from being inflated6Gas leakage or/and air entrainment to increase the SF charged to the equipment6The purity of the gas.
Thirdly, the utility model provides a portable sulfur hexafluoride aerating device is equipped with the solenoid valve on gas charging line, and high-pressure solenoid valve automatic cutout aerifys after the atmospheric pressure value reaches the setting value, realizes automatic inflation control.
Fourth, the utility model provides a portable sulfur hexafluoride aerating device is equipped with the metering unit who is used for measuring the inflation volume at bottom of the car body, if adopt the measurement balance to measure, through weighing to the steel bottle around aerifing, calculates the required inflation volume of electrical equipment, further improves and aerifys the accuracy.
Fifthly, the utility model provides a portable sulfur hexafluoride aerating device still is provided with the air-cooled ware on the inflation management, and the air-cooled ware is connected with the control unit electricity, and when ambient temperature is higher, through the air-cooled ware to SF6Cooling the medium to make SF6The requirement of the compound aeration temperature of medium temperature, and then improve the utility model discloses portable sulfur hexafluoride aerating device's application flexibility.
Sixth, the utility model provides a portable sulfur hexafluoride aerating device is used for fixed steel bottle through setting up fixing device, makes the steel bottle can stably place, improves its security.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural view of a mobile sulfur hexafluoride inflation device provided by the present invention;
fig. 2 is a schematic gas path diagram of the mobile sulfur hexafluoride inflator of fig. 1.
Detailed Description
In order to make the technical solution in the embodiments of the present invention better understood and make the above objects, features and advantages of the present invention more obvious and understandable, the following description of the embodiments of the present invention is provided with reference to the accompanying drawings.
It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Please refer to fig. 1 and fig. 2 in combination, wherein fig. 1 is a schematic structural diagram of a mobile sulfur hexafluoride gas filling device according to the present invention; fig. 2 is a schematic gas path diagram of the mobile sulfur hexafluoride inflator of fig. 1. The utility model provides a portable sulfur hexafluoride aerating device 100 includes automobile body 1, locate automobile body 1's steel bottle bracket 2, locate heating unit 3, gas charging line 4, the control unit 5 and the power supply unit (not shown) of steel bottle bracket 2.
The vehicle body 1 is used for supporting a carrying steel cylinder 10, wherein a sulfur hexafluoride medium is filled in the steel cylinder 10 and is used for providing a gas source for electrical equipment. In this embodiment, the cart body 1 is a flexible and convenient cart structure, and includes a cart frame 11 and wheels 12 disposed at the bottom of the cart frame 11, wherein the cart frame 11 is used for carrying the steel cylinder 10, and the wheels 12 can move the cart frame 11, so that the steel cylinder 10 can be transported to a gas charging device site, and the cart is flexible to use and has strong adaptability to the environment. Specifically, the frame 11 includes a left bracket 111, a right bracket 112, and a base 113 connecting the left bracket 111 and the right bracket 112, wherein the ends of the left bracket 111 and the right bracket 112 are provided with handles 114, and the base 114 is used for supporting the end of the steel cylinder 10; the wheels 12 are universal wheels or outward wheels, and the wheels 12 are mounted on the left side bracket 111 and the right side bracket 112, and are located at opposite ends of the left side bracket 111 and the right side bracket 112, respectively, with the handles 114. The number of wheels 12 may be two or four. When the steel cylinder 10 is placed on the vehicle body, the axial direction of the steel cylinder 10 is perpendicular to the base 113.
The steel cylinder bracket 2 is arranged on the vehicle body 1, in the embodiment, the steel cylinder bracket 2 is designed to be of an arc-shaped structure, namely, the inner surface of the steel cylinder bracket 2 is designed to be an arc surface and matched with the outer surface shape of the steel cylinder 10. When the steel cylinder 10 is placed on the vehicle body 1, the steel cylinder 10 is carried by the steel cylinder bracket 2. Preferably, cylinder carrier 2 is U-shaped in opening.
In order to improve the adaptability of the gas charging device, the steel cylinder bracket 2 is designed into a reversible structure, the steel cylinder 10 is placed in the reversible structure in a vertical mode, the steel cylinder bracket is turned over during gas charging, the steel cylinder is turned upside down, and therefore the steel cylinder meets the gas charging preparation and meets the requirements of gas charging regulations. Specifically, two connecting lugs 21 may be respectively disposed on two sides of the cylinder bracket 2, and the connecting lugs 21 may be connected with the left bracket 111 and the right bracket 112 in a rotatable manner, such as a hinged connection manner. The turnover structure can also adopt the following modes: the connecting lug 21 is a sleeve, the left side support 111 and the right side support 112 are respectively provided with a connecting rod, the sleeve can rotate around the connecting rod, the connecting rod is designed to be a locking nut structure, when the locking nut is locked, the phase position of the steel cylinder bracket 2 and the vehicle body 1 is fixed, and the steel cylinder bracket 2 cannot turn over; when the locking nut is loosened, the steel cylinder bracket 2 can be turned over relative to the vehicle body 1, so that the steel cylinder 10 can be turned upside down for facilitating inflation.
In this embodiment, in order to ensure the stability and safety of the steel cylinder 10 when it is placed upright, a fixing device 7 is designed to fix the steel cylinder 10. The fixing device 7 is connected with the cylinder bracket 2 and comprises an annular hoop 71 and a locking device 72, the annular hoop 71 is connected with the cylinder bracket 2 through the locking device 72, and the locking device 72 is used for limiting the relative position of the annular hoop and the cylinder bracket. The locking device 72 may be a locking bolt, such as a locking handle bolt, which is of a conventional structure and will not be described herein. After the locking device 72 is locked, the annular hoop 71 and the steel cylinder bracket 2 enclose and limit the steel cylinder 10 to shake.
Preferably, a projection is arranged on the annular hoop 71, a groove is arranged at a corresponding position on the steel cylinder bracket 2, and after the annular hoop 71 is locked, the projection is embedded into the corresponding groove, so that the reliability of the fixing device 7 is further ensured.
The heating unit 3 is controlled by the control unit 5 to operate, wherein the operating state of the heating unit 3 is heating or heating stop. The heating unit 3 includes a heating member 31 disposed around the cylinder holder 2, and a start switch (not shown) for controlling on/off of the heating member 31, and on/off of the start switch is controlled by the control unit 5. In this embodiment, the heating member 31 is a heating resistance wire, and the heating resistance wire is disposed on one side of the inner wall of the steel cylinder bracket 2, and can be used to preheat the sulfur hexafluoride medium in the steel cylinder 10, so as to vaporize the liquid sulfur hexafluoride medium.
It should be noted that, besides the above-described resistance wires, the heating member 31 may also be heated by steam or water.
The gas charging pipeline 4 is used for conveying sulfur hexafluoride medium, one end of the gas charging pipeline 4 is connected with the steel cylinder 10, the other end of the gas charging pipeline is connected with gas charging equipment, and sulfur hexafluoride is conveyed to the gas charging equipment through the gas charging pipeline 4 in the gas charging process. The inflation pipeline 4 is divided into three sections according to the function of the inflation pipeline 4 in the process of gas transmission, and specifically, the inflation pipeline 4 comprises a first pipe section 41, a second pipe section 42 and a third pipe section 43 which are connected in sequence.
The first pipe section 41 is connected with the steel cylinder 10, a pressure reducing valve 411 is arranged on the first pipe section 41, and the pressure reducing valve 411 is used for adjusting the pressure of sulfur hexafluoride medium discharged from the steel cylinder;
the second pipe section 42 is arranged around the steel cylinder bracket 2 and covered by the heating element 31, and the medium in the second pipe section 42 is heated by the heat generated by the heating element 31, so that the sulfur hexafluoride medium is completely vaporized after passing through the pressure reducing valve, the sulfur hexafluoride filled in the equipment is ensured to be in a gaseous state, the utilization rate of the sulfur hexafluoride in the steel cylinder is improved, and the equipment damage caused by the liquid sulfur hexafluoride entering the equipment is reduced.
Preferably, the second tube sections 42 are arranged in an S-shape to increase the path of the second tube sections 42 to further ensure complete vaporization of the medium.
The third pipe section 43 is used for connecting an air charging device and inputting the vaporized sulfur hexafluoride gas into the air charging device. In this embodiment, the third pipe section 43 is provided with a temperature detection unit 431, an air pressure detection unit 432, a solenoid valve 433, and an inflation joint 434 provided at an end portion. The temperature detection unit 431 is electrically connected with the control unit 5 and is used for detecting the temperature of the vaporized sulfur hexafluoride medium and sending a detection signal to the control unit 5, and the control unit 5 controls the heating temperature of the heating unit 3 according to the received signal; the air pressure detection unit 432 is used for detecting the pressure of the pipeline, and is electrically connected with the electromagnetic valve 433, and when the detected pressure value reaches a set value, the electromagnetic valve 433 automatically cuts off the air charging. Preferably, the electromagnetic valve 433 is a high-pressure electromagnetic valve, has the characteristics of high sensitivity, good air tightness and the like, and can realize accurate control; preferably, the inflation connector 434 in this embodiment is a check valve quick connector, which can effectively prevent sulfur hexafluoride gas leakage and air entrainment during inflation, and is quick to disassemble and assemble and convenient to use.
For further guarantee to aerify the in-process gas and not take place to reveal, improve the utilization ratio of sulfur hexafluoride to reduce use cost, the utility model discloses in, form for adopting stainless steel material or polytetrafluoroethylene material preparation with gas charging line 4 design, both all have better sealing performance, can not react with sulfur hexafluoride, the pipeline accords with the regulation requirement. Preferably, the gas-filled pipeline 4 is a stainless steel pipe, and compared with a polytetrafluoroethylene pipe, the stainless steel pipe has the advantages of durability, long service life, easiness in carrying and storage and the like.
The utility model discloses in, can just be located and set up an air cooler 412 behind relief pressure valve 411 at first pipeline section 41 for cool off the sulfur hexafluoride medium, make the inflation temperature of sulfur hexafluoride satisfy 20 ℃ of the requirement of aerifing, when ambient temperature is higher, start air cooler 412. The air-cooling device 412 is electrically connected to the control unit 5, that is, the operating state of the air-cooling device 412 is controlled by the control unit 5.
The utility model discloses in, power supply unit provides the power for required power supply unit. The power supply unit adopts an external power supply mode.
The utility model discloses in, preferred, be provided with the measurement unit 8 of measurement inflation volume, realize the quantitative calculation of equipment inflation volume. The metering unit 8 can control the gas flow rate and calculate the gas flow by the formula Q ═ vt, but the weighing method is greatly influenced by the environment, and the measurement and calculation result is easy to have errors due to interface air leakage or operation reasons; in this embodiment, the air inflation amount is preferably measured by weighing. Specifically, a scale is arranged on the base 113, so that the weight of the steel cylinder before and after inflation can be directly measured, and the scale is used for measuring the inflation quantity required by the inflation equipment.
Because the scale is arranged on the base 113, the scale is called a bottom support of a steel cylinder during the use process.
The utility model provides a portable sulfur hexafluoride aerating device, the application method is as follows:
during inflation, the steel cylinder 10 is placed on a weighing tray of a metering scale, and the fixing device 7 is locked, so that the steel cylinder is fixed by the annular hoop 71; push the device to the point where SF addition is required6Near the equipment, the external power supply is switched onThe heat is conducted to the gas charging pipeline and the steel cylinder through the heating unit 3; after preheating, the pressure reducing valve 411 is opened, so that the gas in the steel cylinder is continuously filled into the equipment, and when the value of the air pressure detection unit reaches a set value, the electromagnetic valve automatically cuts off the gas filling. After the inflation is finished, the pressure value detected by the air pressure detection unit is SF6The gas pressure in the equipment and the weight difference of the steel cylinder before and after inflation are the required inflation quantity of the equipment.
For explaining the utility model provides a portable sulfur hexafluoride aerating device's advantage will the utility model discloses a portable sulfur hexafluoride aerating device contrasts with current gas filled mode, and the test result is as follows:
adopt prior art's direct inflation mode with the utility model provides an aerating device aerifys, and sulfur hexafluoride rate of utilization in the steel bottle and the gas purity statistical conditions of filling equipment are as follows:
table 1: SF of the prior art6Statistical table for use condition of steel cylinder gas
Table 2: adopt the utility model discloses an aerating device SF6Statistical table for use condition of steel cylinder gas
Table 3: gas purity statistical table of existing inflation mode inflation equipment
Table 4: adopt the utility model discloses an aerating device fills gas purity statistical table of equipment
| Serial number | Transformer substation and equipment name | SF6Gas leakage | Post-aeration purity (%) |
| 1 | Furnace view change 406 | Not detected out | 99.4 |
| 2 | Tourist transformer 402 | Not detected out | 99.3 |
| 3 | East China changes 412 | Not detected out | 99.4 |
| 4 | River east transform 408 | Not detected out | 99.2 |
| 5 | Blue- |
Not detected out | 99.3 |
| Mean value of | — | — | 99.32 |
Can see by comparing table 1 and table 2, adopt the utility model provides a portable sulfur hexafluoride aerating device aerifys, and SF6The average utilization rate of the gas in the steel cylinder is greatly improved.
Can see by table 3 and table 4 contrast, adopt the utility model provides a portable sulfur hexafluoride aerating device aerifys, fills into the SF of equipment6The gas purity is obviously improved, and the equipment reliability is improved.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.
The embodiments of the present invention are described in detail with reference to the drawings, but the present invention is not limited to the described embodiments. Various changes, modifications, substitutions and alterations to these embodiments will occur to those skilled in the art without departing from the spirit and scope of the present invention.
Claims (10)
1. A movable sulfur hexafluoride gas charging device is characterized by comprising a vehicle body, a steel cylinder bracket, a heating unit, a gas charging pipeline, a control unit and a power supply unit, wherein the steel cylinder bracket is connected with the vehicle body in a turnover mode and used for supporting a steel cylinder;
the gas charging pipeline comprises a first pipe section, a second pipe section and a third pipe section, wherein the first pipe section is provided with a pressure reducing valve, one end of the first pipe section is connected with the steel cylinder, the second pipe section is connected with the first pipe section, is arranged around the steel cylinder bracket and is covered by the heating unit, the third pipe section is connected with the second pipe section and is used for connecting gas charging equipment, and the third pipe section is provided with a temperature detection unit, an air pressure detection unit and an electromagnetic valve;
the temperature detection unit is electrically connected with the control unit, and the control unit controls the working state of the heating unit; the air pressure detection unit is electrically connected with the electromagnetic valve.
2. The mobile sulfur hexafluoride gas filling device of claim 1 further including a metering unit for metering the amount of gas filled.
3. The mobile sulfur hexafluoride inflator of claim 2, wherein the metering unit is a scale disposed at a bottom of the vehicle body.
4. The mobile sulfur hexafluoride gas filling device of claim 1, wherein the cylinder holder opening is U-shaped, and the heating unit includes a heating element disposed around the cylinder holder, the heating element covering the second tube segment.
5. The mobile sulfur hexafluoride gas filling device of claim 1 wherein said second pipe sections are arranged in an S-shape.
6. The mobile sulfur hexafluoride gas filling device of claim 1 wherein the end of the third pipe section is provided with a gas filling connection, the gas filling connection being a check valve quick connector.
7. The mobile sulfur hexafluoride gas filling device of claim 1 wherein an air cooler is located on the first pipe section behind the pressure reducing valve, the air cooler being electrically connected to the control unit.
8. The mobile sulfur hexafluoride inflation device of claim 1, wherein the inflation line is formed of stainless steel material or polytetrafluoroethylene material.
9. The mobile sulfur hexafluoride gas filling device of any one of claims 1 to 8 further including a retainer connected to the cylinder holder and configured to retain the cylinder.
10. The mobile sulfur hexafluoride gas filling device of claim 9 wherein said securing means includes an annular collar, and a locking means connecting said annular collar and said cylinder holder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920886154.3U CN210219320U (en) | 2019-06-12 | 2019-06-12 | Mobile sulfur hexafluoride gas-filling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920886154.3U CN210219320U (en) | 2019-06-12 | 2019-06-12 | Mobile sulfur hexafluoride gas-filling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210219320U true CN210219320U (en) | 2020-03-31 |
Family
ID=69931751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920886154.3U Expired - Fee Related CN210219320U (en) | 2019-06-12 | 2019-06-12 | Mobile sulfur hexafluoride gas-filling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210219320U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113375049A (en) * | 2021-05-31 | 2021-09-10 | 国网安徽省电力有限公司亳州供电公司 | SF6 gas charging device |
| CN115325444A (en) * | 2022-08-08 | 2022-11-11 | 河南省日立信股份有限公司 | Manual upset of sulfur hexafluoride steel bottle is aerifyd small handcart |
| CN115419825A (en) * | 2022-08-29 | 2022-12-02 | 欧中电子材料（重庆）有限公司 | Gas cylinder comprehensive treatment system and treatment method thereof |
-
2019
- 2019-06-12 CN CN201920886154.3U patent/CN210219320U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113375049A (en) * | 2021-05-31 | 2021-09-10 | 国网安徽省电力有限公司亳州供电公司 | SF6 gas charging device |
| CN115325444A (en) * | 2022-08-08 | 2022-11-11 | 河南省日立信股份有限公司 | Manual upset of sulfur hexafluoride steel bottle is aerifyd small handcart |
| CN115419825A (en) * | 2022-08-29 | 2022-12-02 | 欧中电子材料（重庆）有限公司 | Gas cylinder comprehensive treatment system and treatment method thereof |
| CN115419825B (en) * | 2022-08-29 | 2024-05-14 | 欧中电子材料（重庆）有限公司 | Gas cylinder comprehensive treatment system and treatment method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210219320U (en) | Mobile sulfur hexafluoride gas-filling device | |
| JP5327382B2 (en) | Hydrogen filling system | |
| CN201014185Y (en) | Mobile deep cooling liquid instantaneous delivery filling device | |
| US10611254B2 (en) | Charging cable unit for a charging column of an electric filling station and use of such a unit | |
| CN204988657U (en) | Heat -exchanger leak detection apparatus | |
| CN108630400A (en) | A kind of oil-immersed transformer balance pressure apparatus for examination and repair and method | |
| CN208366554U (en) | A kind of oil-immersed transformer seal test device | |
| CN102339655B (en) | Temperature-controlled inflatable vacuum radiation equipment | |
| JP2018168890A (en) | Hydrogen filling method and hydrogen filling system | |
| KR101475930B1 (en) | Metering out fit with SF6 gas | |
| US11703220B2 (en) | Portable electric liquid fuel vaporizer | |
| CN210575355U (en) | Vehicle-mounted movable transformer with position-adjustable wire outlet sleeve | |
| ES2237526T3 (en) | DISCHARGE AND FILLING ASSEMBLY FOR COOLING SYSTEMS. | |
| CN212616817U (en) | HDPE reinforced double-wall corrugated pipe with high compressive strength | |
| CN212408277U (en) | Air charging system | |
| US20230400155A1 (en) | Measuring system for determining a dispensed amount of hydrogen and method therefor | |
| CN213364137U (en) | Sealing test device for transformer | |
| JP2017180747A (en) | Fuel gas filling device | |
| CN217736931U (en) | Movable sulfur hexafluoride gas supplementing and sampling device | |
| CN218156651U (en) | Performance testing device based on pressure transmitter | |
| CN205535056U (en) | Aerify connecting device | |
| CN213091064U (en) | Rural water supply teletransmission manometer | |
| CN219015921U (en) | Comprehensive test equipment for detecting aircraft refueling connector and rubber tube | |
| CN109378177A (en) | Oil-immersed transformer | |
| CN117854889A (en) | Portable main transformer conservator adjusting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200331 |