CN111085089A - Full-automatic drying, purifying and decompressing device applied to SF6 gas transmission system - Google Patents
Full-automatic drying, purifying and decompressing device applied to SF6 gas transmission system Download PDFInfo
- Publication number
- CN111085089A CN111085089A CN202010073154.9A CN202010073154A CN111085089A CN 111085089 A CN111085089 A CN 111085089A CN 202010073154 A CN202010073154 A CN 202010073154A CN 111085089 A CN111085089 A CN 111085089A
- Authority
- CN
- China
- Prior art keywords
- electric valve
- valve
- tower
- purification
- pressure sensor
- 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.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Drying Of Gases (AREA)
Abstract
The invention discloses a full-automatic drying, purifying and decompressing device applied to an SF6 gas transmission system, which is characterized by comprising a controller, a purifying and decompressing system, an online monitoring system for monitoring the purity of the purifying and decompressing system and an automatic gas regenerating system for recovering gas in the purifying and decompressing system, wherein the purifying and decompressing system comprises a decompressing system and a drying and purifying system, the automatic gas regenerating system comprises a recovering system, a heating system and a vacuum purifying system, the online monitoring system, the decompressing system, the heating system, the recovering system, the heating system and the vacuum purifying system are all arranged on the drying and purifying system, and the controller is electrically connected with the purifying and decompressing system, the online monitoring system and the automatic gas regenerating system. The invention realizes the on-line monitoring of each index of SF6 gas in an SF6 gas transmission system through a brand-new integration and control mode, and controls the automatic switching and vacuum heating regeneration of an AB tower of the system through an on-line monitoring result. Meanwhile, zero emission of SF6 gas is realized in the regeneration process, and the environment is protected.
Description
Technical Field
The invention relates to a full-automatic drying, purifying and decompressing device applied to an SF6 gas transmission system, and belongs to the technical field of full-automatic drying, purifying and decompressing of gas.
Background
In the prior art, a non-thermal pressure difference regeneration mode is adopted in the gas regeneration process, the regeneration tower utilizes dry air of the working tower to blow from top to bottom, the molecular sieve in the adsorption tower is regenerated by utilizing the dry air, and a large amount of regeneration gas needs to be lost in the regeneration process. The principle of the adsorption dryer used in the dry air system is shown in fig. 7, and according to the design of the compressed air system, although the drying and purification of the gas can be realized, the design concept is completely different from the requirement of the SF6 gas.
The SF6 gas is used as an insulating medium of high-voltage electrical equipment, is expensive, is a greenhouse gas, has the greenhouse effect which is 23600 times that of carbon dioxide, and is a gas which is strictly prohibited from being discharged by the state.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a full-automatic drying, purifying and decompressing device applied to an SF6 gas transmission system.
In order to achieve the purpose, the invention provides a full-automatic drying, purifying and decompressing device applied to an SF6 gas transmission system, which comprises a controller, a purifying and decompressing system, an online monitoring system for monitoring the purity of the purifying and decompressing system and an automatic gas regenerating system for recovering gas in the purifying and decompressing system, wherein the purifying and decompressing system comprises a decompressing system and a drying and purifying system, the automatic gas regenerating system comprises a recovering system, a heating system and a vacuum purifying system, the online monitoring system, the decompressing system, the heating system, the recovering system, the heating system and the vacuum purifying system are all installed on the drying and purifying system, and the controller is electrically connected with the purifying and decompressing system, the online monitoring system and the automatic gas regenerating system.
Preferably, the drying and purifying system comprises a V1 ball valve, an MV1 electric valve, a tower A, a moisture adsorbent, an MV2 electric valve, an MV5 electric valve, a first connecting pipeline and an F1 filter, the V1 ball valve, the MV1 electric valve, the tower A, the MV2 electric valve, the MV5 electric valve and the F1 filter are sequentially communicated in series through a first connecting pipeline, the moisture adsorbent is arranged in the tower A, and the controller is electrically connected with the MV1 electric valve, the MV2 electric valve and the MV5 electric valve; the tower A is a sealed tank body.
Preferably, the pressure reducing system comprises a V4 ball valve, a PT1 pressure sensor, a PG1 pressure gauge, a REV1 pressure reducer, an MV6 electric valve, a second pipeline and a V2 ball valve, a first connecting pipeline between the V1 ball valve and the MV1 electric valve is communicated with an air inlet of the V4 ball valve, an air outlet of the V4 ball valve is communicated with a PT1 pressure sensor, the PG1 pressure gauge is connected to the PT1 pressure sensor in parallel, the F1 filter, the REV1 pressure reducer and the V2 ball valve are connected in series through the second pipeline in sequence, the MV6 electric valve is connected to two ends of the REV1 pressure reducer in parallel, and the controller is electrically connected with the PT1 pressure sensor, the REV 1.
Preferably, the drying and purifying system further comprises an MV3 electric valve, a B tower, an MV4 electric valve, a pipeline III and an MV8 electric valve, a first connecting pipeline between the V1 ball valve and the MV1 electric valve is communicated with an air inlet of the MV3 electric valve, an air outlet of the MV3 electric valve, the B tower and the MV4 electric valve are sequentially communicated in series through a third pipeline, a first connecting pipeline between the MV2 electric valve and the MV5 electric valve is communicated with an air outlet of the MV4 electric valve, the MV8 electric valve is communicated with the recovery system and the vacuum purification system, and the controller is electrically connected with the MV3 electric valve, the MV4 electric valve and the MV8 electric valve; the tower B is a sealed tank body.
Preferably, the recovery system comprises an MV7 electric valve, an MV9 electric valve and a recovery device, the gas outlet of the tower A, the MV7 electric valve, the MV9 electric valve and the recovery device are sequentially communicated in series, the gas outlet of the MV8 electric valve is communicated with the gas inlet of the MV9 electric valve, and the controller is electrically connected with the MV7 electric valve, the MV9 electric valve and the recovery device.
Preferably, the vacuum purification system comprises an MV1O electric valve and a vacuum-pumping device, the MV7 electric valve, the MV1O electric valve and the vacuum-pumping device are sequentially communicated in series, an air outlet of the MV8 electric valve is communicated with an air inlet of the MV1O electric valve, and the controller is electrically connected with the MV1O electric valve and the vacuum-pumping device.
Preferably, the heating system comprises a plurality of HA heaters and a plurality of HB heaters, the HA heaters are installed on the tower A, the HB heaters are installed on the tower B, the online monitoring system comprises a temperature monitoring system, the temperature monitoring system comprises a T1 temperature controller and a T2 temperature controller, the T1 temperature controller is electrically connected with the controller, and the controller is electrically connected with the HA heaters and the HB heaters.
Preferably, the online monitoring system comprises a V3 ball valve, a pressure monitoring system and an SF6 online monitoring system, the pressure monitoring system comprises a PT2 pressure sensor, a PG2 pressure gauge, a PT3 pressure sensor, a PG3 pressure gauge, a PT4 pressure sensor, a PG4 pressure gauge and a V5 ball valve, a second pipeline between the REV1 pressure reducer and the V1 ball valve is communicated with the V1 ball valve and the SF 1 online monitoring system in series in sequence, the PT1 pressure sensor is installed on the A tower, the PG1 pressure gauge and the PT1 pressure sensor are connected in parallel, the PT1 pressure sensor is installed on the B tower, the PG1 pressure gauge and the PT1 pressure sensor are connected in parallel, the PT1 pressure sensor is communicated with the second pipeline between the REV1 and the V1 ball valve through the V1 ball valve, the PG1 pressure gauge and the 1 pressure sensor are connected in parallel, the PT1 pressure sensor.
Preferably, the on-line monitoring system comprises a purity monitoring system and a moisture detection system,
the controller is electrically connected with the purity detection system and the moisture detection system. The invention achieves the following beneficial effects:
the invention realizes the on-line monitoring of each index of SF6 gas in an SF6 gas transmission system through a brand-new integration and control mode, and controls the automatic switching and vacuum heating regeneration of an AB tower of the system through an on-line monitoring result. Meanwhile, zero emission of SF6 gas is realized in the regeneration process, and the environment is protected. The device carries out real-time monitoring and protection on the purity and the pressure index of the rear end of the whole SF6 gas transmission system, ensures that the purity of the rear end gas is not lower than a set value, ensures that the pressure is not higher than the set value, and provides effective guarantee for the rear gas end. The invention designs a full-automatic drying, purifying and decompressing device which integrates the functions of drying, purifying, decompressing, online monitoring of purity, gas recycling, vacuum heating, regenerating and the like of SF6 gas in an SF6 gas transmission system, and ensures that SF6 gas in the gas transmission system meets the requirements of purity, moisture and the like. An integrated SF6 online monitoring system automatically judges the regeneration time of the adsorption tower by monitoring various indexes of SF6, and the function is fully automatically controlled; the whole regeneration process is automatically controlled by integrating pressure monitoring, temperature monitoring, a vacuumizing device and a recovery device, and SF6 gas emission is avoided in the whole equipment operation process, so that greenhouse gas emission is reduced; the equipment integration decompression system automatically adjusts the opening and closing of a bypass valve of the decompressor according to the air inlet pressure, and maximally ensures the rear-end gas inflation speed.
Drawings
FIG. 1 is a system schematic of the present invention;
FIG. 2 is a schematic diagram of the working tower A and the standby tower B in the purification and pressure reduction process of the present invention;
FIG. 3 is a schematic illustration of the valve MV6 being open in the purge pressure reduction scheme of the present invention;
FIG. 4 is a schematic diagram of the operation of column B in the automatic gas regeneration process of the present invention;
FIG. 5 is a schematic diagram of the recovery of gas in column A during the automatic regeneration of gas according to the present invention;
FIG. 6 is a schematic diagram of the evacuation of column A during the automatic regeneration of the gas of the present invention;
fig. 7 is a schematic diagram of an adsorption dryer used in a prior art drying air system.
Detailed Description
The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The utility model provides a be applied to full-automatic dry purification pressure relief device of SF6 gas transmission system, which comprises a controller, purify the depressurization system, a gaseous automatic regeneration system who is used for monitoring the on-line monitoring system who purifies the depressurization system purity and is used for retrieving the interior gas of purification depressurization system, purify the depressurization system and include depressurization system and dry purification system, gaseous automatic regeneration system includes recovery system, heating system and vacuum purification system, on-line monitoring system, the depressurization system, heating system, recovery system, heating system and vacuum purification system are all installed on dry purification system, purification depressurization system is connected to the controller electricity, on-line monitoring system and gaseous automatic regeneration system.
Further, the drying and purifying system comprises a V1 ball valve, an MV1 electric valve, a tower A, a moisture adsorbent, an MV2 electric valve, an MV5 electric valve, a first connecting pipeline and an F1 filter, a V1 ball valve, an MV1 electric valve, a tower A, an MV2 electric valve, an MV5 electric valve and an F1 filter are sequentially communicated in series through a first connecting pipeline, the moisture adsorbent is arranged in the tower A, and a controller is electrically connected with the MV1 electric valve, the MV2 electric valve and the MV5 electric valve; the tower A is a sealed tank body.
Further, the pressure reducing system comprises a V4 ball valve, a PT1 pressure sensor, a PG1 pressure gauge, a REV1 pressure reducer, an MV6 electric valve, a pipeline II and a V2 ball valve, a first connecting pipeline between the V1 ball valve and the MV1 electric valve is communicated with an air inlet of the V4 ball valve, an air outlet of the V4 ball valve is communicated with a PT1 pressure sensor, a PG1 pressure gauge is connected to the PT1 pressure sensor in parallel, an F1 filter, a REV1 pressure reducer and the V2 ball valve are connected in series through the pipeline II in sequence, the MV6 electric valve is connected to two ends of the REV1 pressure reducer in parallel, and the controller is electrically connected with the PT1 pressure sensor, the REV1 pressure.
Furthermore, the drying and purifying system also comprises an MV3 electric valve, a B tower, an MV4 electric valve, a pipeline III and an MV8 electric valve, a first connecting pipeline between the V1 ball valve and the MV1 electric valve is communicated with an air inlet of the MV3 electric valve, an air outlet of the MV3 electric valve, the B tower and the MV4 electric valve are sequentially communicated in series through a third pipeline, a first connecting pipeline between the MV2 electric valve and the MV5 electric valve is communicated with an air outlet of the MV4 electric valve, the MV8 electric valve is communicated with the recovery system and the vacuum purification system, and the controller is electrically connected with the MV3 electric valve, the MV4 electric valve and the MV8 electric valve; the tower B is a sealed tank body.
Further, the recovery system comprises an MV7 electric valve, an MV9 electric valve and a recovery device, the gas outlet of the tower A, the MV7 electric valve, the MV9 electric valve and the recovery device are sequentially communicated in series, the gas outlet of the MV8 electric valve is communicated with the gas inlet of the MV9 electric valve, and the controller is electrically connected with the MV7 electric valve, the MV9 electric valve and the recovery device.
Further, the vacuum purification system comprises an MV1O electric valve and a vacuum-pumping device, the MV7 electric valve, the MV1O electric valve and the vacuum-pumping device are sequentially communicated in series, an air outlet of the MV8 electric valve is communicated with an air inlet of the MV1O electric valve, and the controller is electrically connected with the MV1O electric valve and the vacuum-pumping device.
Further, the heating system comprises a plurality of HA heaters and a plurality of HB heaters, the HA heaters are installed on the tower A, the HB heaters are installed on the tower B, the online monitoring system comprises a temperature monitoring system, the temperature monitoring system comprises a T1 temperature controller and a T2 temperature controller, the T1 temperature controller is electrically connected with the controller, and the controller is electrically connected with the HA heaters and the HB heaters.
Further, the online monitoring system comprises a V3 ball valve, a pressure monitoring system and an SF6 online monitoring system, the pressure monitoring system comprises a PT2 pressure sensor, a PG2 pressure gauge, a PT3 pressure sensor, a PG3 pressure gauge, a PT4 pressure sensor, a PG4 pressure gauge and a V5 ball valve, a second pipeline communication between the REV1 pressure reducer and the V1 ball valve is sequentially connected with the V1 ball valve and the SF 1 online monitoring system in series, the PT1 pressure sensor is installed on the A tower, the PG1 pressure gauge and the PT1 pressure sensor are connected in parallel, the PT1 pressure sensor is installed on the B tower, the PG1 pressure gauge and the PT1 pressure sensor are connected in parallel, the PT1 pressure sensor is connected with the second pipeline communication between the REV1 and the V1 ball valve through the V1 pressure valve, the PG1 pressure gauge and the 1 pressure sensor are connected in parallel, the PT1 pressure sensor.
Further, the on-line monitoring system comprises a purity monitoring system and a moisture detection system,
the controller is electrically connected with the purity detection system and the moisture detection system.
The F1 filter function is for filtering impurity such as dust, moisture and SF6 decomposition thing, and purity monitoring system monitoring content includes the purity of SF6 gas, the purity of steam and other impurity gas's purity, and other impurity gas includes air, carbon tetrafluoride, hexafluoroethane, octafluoropropane, hydrogen fluoride, mineral oil etc..
Purity detection system, moisture detection system, vacuum-pumping device, recovery device, SF6 on-line monitoring system, PT2 pressure sensor, PG2 pressure gauge, PT3 pressure sensor, PG3 pressure gauge, PT4 pressure sensor, PG4 pressure gauge, V5 ball valve, V3 ball valve, HA heater, HB heater, MV1O electric valve, MV7 electric valve, MV9 electric valve, MV3 electric valve, MV4 electric valve, pipe three, MV8 electric valve, V4 ball valve, PT1 pressure sensor, PG1 pressure reducer pressure gauge, REV1, MV6 electric valve, pipe two, V2 ball valve, controller, V1, MV1 electric valve, moisture adsorbent, MV2 electric valve, MV5 electric valve, connecting pipe one, HA-1 heater, HA-2 heater, HA-3 heater, HB-1 heater, HB-2 heater, HB-3 heater and F1 are adopted in the existing technology, the model can be selected by the person skilled in the art according to the actual requirement.
In the drawings of the present invention, PT denotes a pressure sensor, PG denotes a pressure gauge, F denotes a filter, MV denotes an electric ball valve, REV denotes a pressure reducing valve, and V denotes a ball valve.
The working process of the device is as follows:
the system schematic diagram is shown in figure 1, the device has the functions of online monitoring of SF6 gas purity, drying and purification and vacuum purification and regeneration according to the characteristics of an SF6 gas transmission system, meanwhile, a pressure reducer and an MV6 electric valve are designed, and when the air inlet pressure of equipment is lower than the set pressure value of the pressure reducer, a bypass valve: the MV6 electric valve is automatically opened to accelerate the gas supply flow, and all functions of the gas are fully-automatic control operation.
Purification and pressure reduction process
As shown in FIG. 2, the present apparatus is used by using towers A and B as a backup, and the present flow is described by taking tower A as an operation and tower B as a standby example. When the equipment works, if the pressure of the air inlet PT1 is higher than the air outlet set value of the REV1 pressure reducer D, SF6 gas firstly enters the device from the air inlet, passes through a V1 ball valve, an MV1 electric valve, A tower adsorption and purification, MV2, MV5 and F1 dust filtration and REV1 pressure reducer pressure reduction, and then flows out through a V2 valve.
As shown in FIG. 3, when inlet port pressure PT1 falls below the decompressor set point, the decompressor bypass valve MV6 automatically opens increasing gas inlet flow.
Automatic gas regeneration process
As shown in fig. 4, the device is integrated with an SF6 online monitoring system, which automatically monitors various indexes such as SF6 gas outlet purity, moisture and the like in real time, and when the monitored indexes are lower than an alarm set value, the SF6 online monitoring system gives a command, the MV1 and MV2 valves are automatically closed, and the MV3 and MV4 valves are automatically opened, so that automatic switching from the tower a to the tower B is realized.
As shown in fig. 5, when the tower A, B is switched, the recovery units MV7 and MV9 automatically operate to completely recover and clean the SF6 gas in the tower a. And detecting the pressure PT2 in the tower A, and when the pressure in the tower A reaches a set value, automatically closing the MV9 valve and stopping the operation of the recovery device.
As shown in fig. 6, after the recovery of SF6 gas is completed, the MV9 valve is automatically closed, the MV10 valve is automatically opened, and the vacuum-pumping device automatically operates to vacuum the molecular sieve in the a column. Meanwhile, heaters HA-1, HA-2 and HA-3 on the tower A are automatically started to heat the tower A, and the temperature of the tower A is automatically controlled within a set value range by a T1 temperature controller. The vacuum heating regeneration function begins.
And when the vacuum heating regeneration function of the tower A reaches the set time t, the heating regeneration function is finished, and the MV7, the MV10, the vacuumizing device and the heater of the adsorption tower A are all automatically stopped, and the automatic cooling process of the tower A is started. By detecting the temperature T1, when the temperature reaches a set value, MV2 automatically opens and enters qualified SF6 gas for pressure maintaining, when PT2 reaches a set value, an MV2 valve automatically closes, and the tower A enters a standby program.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010073154.9A CN111085089A (en) | 2020-01-22 | 2020-01-22 | Full-automatic drying, purifying and decompressing device applied to SF6 gas transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010073154.9A CN111085089A (en) | 2020-01-22 | 2020-01-22 | Full-automatic drying, purifying and decompressing device applied to SF6 gas transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111085089A true CN111085089A (en) | 2020-05-01 |
Family
ID=70399698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010073154.9A Pending CN111085089A (en) | 2020-01-22 | 2020-01-22 | Full-automatic drying, purifying and decompressing device applied to SF6 gas transmission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111085089A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115888675A (en) * | 2022-12-06 | 2023-04-04 | 国网安徽省电力有限公司电力科学研究院 | Adsorbent regeneration self-starting device and method suitable for SF6 purification equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11244643A (en) * | 1998-02-27 | 1999-09-14 | Toshiba Corp | Insulation gas recovery and filling device |
| CN2938373Y (en) * | 2006-08-22 | 2007-08-22 | 上海雷格仪器有限公司 | SF6 insulation and recoverying device |
| CN207385157U (en) * | 2017-08-28 | 2018-05-22 | 广西电网有限责任公司电力科学研究院 | A kind of automatic switchover gas drier |
| CN108176389A (en) * | 2018-01-17 | 2018-06-19 | 国网安徽省电力有限公司电力科学研究院 | SF6The adsorbent on-line regeneration method of purifying processing device |
| CN211913281U (en) * | 2020-01-22 | 2020-11-13 | 河南平高电气股份有限公司 | Full-automatic drying, purifying and decompressing device applied to SF6 gas transmission system |
-
2020
- 2020-01-22 CN CN202010073154.9A patent/CN111085089A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11244643A (en) * | 1998-02-27 | 1999-09-14 | Toshiba Corp | Insulation gas recovery and filling device |
| CN2938373Y (en) * | 2006-08-22 | 2007-08-22 | 上海雷格仪器有限公司 | SF6 insulation and recoverying device |
| CN207385157U (en) * | 2017-08-28 | 2018-05-22 | 广西电网有限责任公司电力科学研究院 | A kind of automatic switchover gas drier |
| CN108176389A (en) * | 2018-01-17 | 2018-06-19 | 国网安徽省电力有限公司电力科学研究院 | SF6The adsorbent on-line regeneration method of purifying processing device |
| CN211913281U (en) * | 2020-01-22 | 2020-11-13 | 河南平高电气股份有限公司 | Full-automatic drying, purifying and decompressing device applied to SF6 gas transmission system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115888675A (en) * | 2022-12-06 | 2023-04-04 | 国网安徽省电力有限公司电力科学研究院 | Adsorbent regeneration self-starting device and method suitable for SF6 purification equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102058156B1 (en) | Smart dryer system of flow dependant switching type and drying method usint the same | |
| CN101920154A (en) | Gas drying process and device | |
| CN103990358B (en) | A kind of blowing without discharge finished product air cooling has hot recycling drying process | |
| CN108176389A (en) | SF6The adsorbent on-line regeneration method of purifying processing device | |
| WO2016011818A1 (en) | Method of drying humid air and modular air dryer | |
| CN101301999A (en) | Methods of Enriching Oxygen from the Air | |
| CN103100285B (en) | Modular integrated compressed air purification device | |
| CN208302410U (en) | A kind of VOCs waste gas treatment equipment | |
| CN205683813U (en) | A kind of vehicle-mounted compressed air purifying drying device | |
| CN111085089A (en) | Full-automatic drying, purifying and decompressing device applied to SF6 gas transmission system | |
| CN203315983U (en) | Adsorption type drying machine for air thermal-energy negative-pressure regenerated compressed air | |
| CN211913281U (en) | Full-automatic drying, purifying and decompressing device applied to SF6 gas transmission system | |
| CN110706895A (en) | A kind of fast processing method of vehicle-mounted main variable respirator | |
| CN101732941B (en) | Waste gas continuous purification device | |
| CN201439046U (en) | High pressure micro heat regenerative adsorption filter drier | |
| CN108636099A (en) | A kind of the tail gas recycle purification circulating device and its technique of bell-type annealing furnace system | |
| CN108097003A (en) | Isobaric variable temperature regeneration absorption type compressed air drying technique | |
| CN114229810B (en) | Helium purification system and method for thermal aging test of high-temperature gas cooled reactor internals | |
| CN203342631U (en) | Compressed air tepidity regeneration dryer | |
| CN212188501U (en) | Drying and purifying device based on four towers | |
| CN212236656U (en) | Temperature control structure of zero-gas-consumption compression heat dryer | |
| CN210448618U (en) | Zero gas consumption deoiling adsorption drying system of gas | |
| JP4110782B2 (en) | Ozone generator | |
| CN213983638U (en) | RTO waste gas drying device | |
| JP3547503B2 (en) | Medical compressed air supply device |
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 | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 211102 No. 280 Heyan Road, Nanjing, Jiangsu Applicant after: JIANGSU POWER TRANSMISSION AND DISTRIBUTION Co.,Ltd. Applicant after: STATE GRID JIANGSU ELECTRIC POWER Co.,Ltd. Applicant after: HENAN PING GAO ELECTRIC Co.,Ltd. Address before: 211102 no.58-5, Suyuan Avenue, Jiangning District, Nanjing City, Jiangsu Province Applicant before: JIANGSU POWER TRANSMISSION AND DISTRIBUTION Co.,Ltd. Applicant before: STATE GRID JIANGSU ELECTRIC POWER Co.,Ltd. Applicant before: HENAN PING GAO ELECTRIC Co.,Ltd. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200501 |