CN202605994U - Air drying system for submersible motors for large-scale pumping stations and pumping sets - Google Patents
Air drying system for submersible motors for large-scale pumping stations and pumping sets Download PDFInfo
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- CN202605994U CN202605994U CN 201220127394 CN201220127394U CN202605994U CN 202605994 U CN202605994 U CN 202605994U CN 201220127394 CN201220127394 CN 201220127394 CN 201220127394 U CN201220127394 U CN 201220127394U CN 202605994 U CN202605994 U CN 202605994U
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- air
- submersible motor
- distributor
- submersible
- pipeline
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Abstract
The utility model discloses an air drying system for submersible motors for large-scale pumping stations and pumping sets, which comprises an air compressor, electromagnetic valves, an oil-water separator, a pressure reducing valve 1, an air dehumidifier and a distributor, wherein an air outlet of the air compressor, the electromagnetic valve 1, the oil-water separator, the pressure reducing valve, the air dehumidifier and the distributor are sequentially connected through a pipeline, an air outlet of the distributor is respectively connected to an air inlet pipe of each submersible motor through a pipeline, the pipeline between the distributor and the air inlet pipe of each submersible motor is respectively provided with an electromagnetic valve 2, the air inlet pipe extends to the inside of the submersible motor, the submersible motor is also provided with an air exhaust pipe, and an air outlet of the exhaust pipe is provided with an electromagnetic valve 3. Through testing, the air drying system disclosed by the utility model can simultaneously provide a drying system for eight 900 ZDB submersible motors, thereby providing an excellent quality assurance for large-scale pumping stations, prolonging the serve lives of submersible motors, reducing the maintenance frequency of submersible motors, and improving the operating utilization rate of submersible motors.
Description
Technical field
The utility model relates generally to the dry field of submersible motor, relates in particular to a kind of air dryer systems that is used for the submersible motor of large pumping station, pump group.
Background technology
The submersible motor of the various models of existing each manufacturer production is electrical machine insulation resistance problem of unstable (decline) all in the pumping plant work regular hour.Insulaion resistance is the basic index of motor and circuit; Also be big event in the security performance simultaneously; Motor is owing to work in water for a long time, make moist with self running easily and the temperature difference causes motor that produces when stopping in produce the condensation phenomenon and make electrical machine insulation resistance unstable (reduction).If untimely solution motor internal makes moist and the condensation phenomenon not only can be burnt motor, bring very big threat also could for worker's life safety! Our conventional solution is the work that stops water pump, and the dismounting motor is dried processing to stator, but this kind solution labour intensity is big, maintenance cost is high, frequency of maintenance is high and can not play the effect of prevention! But between the pump group of large-scale pumping plant, maintain difficulty and well imagine that especially the maintenance cycle is long, but also possibly influence the operate as normal of pumping plant.
The technical staff is through find therefrom that to the maintenance of submersible motor it all is to cause the insulaion resistance reduction just possibly form backfeed loop, increase power attenuation, cause cross-talk because the motor internal high humidity makes moist that most of submersible motors break down for many years.The leakage current of excess can produce heat or thereby dc electrolysis destroys insulation, causes short circuit, burns motor even crisis safety.Motor insulator surface in installation process is attached with the varnish introduced in dust, salinity, nonmetal thread thing and the process of producing product, rosin etc., and clear plastic is owing to there is sizable surface resistivity, so surface leakage is minimum; After yet insulator surface is polluted; Under the environment of moist (high humidity), the pollutant that is adsorbed merges with moist atmosphere, forms the electrolyte moisture film at insulator surface; Its surface is become can conduct electricity, and this insulating resistance value obviously descends.
For this reason in recent years the technical staff to finding in production, installation and the maintenance of the installation construction of large pumping station and submersible motor that submersible motor receives the influence of temperature and humidity; The insulaion resistance of submersible motor with the increase of relative humidity reduce, along with the increase of relative temperature reduces; It is not obvious to show that simultaneously insulaion resistance changes in the temperature range of GTB1217-91 regulation, and relative humidity variations is then relatively more responsive.
Insulator under the condition of cleaning, electrical machine insulation resistance is with the curve that temperature and relative humidity variations change (curve is represented 25 ℃, 35 ℃, 45 ℃, 60 ℃ from top to bottom successively among the figure) as shown in Figure 1.
The utility model content
The utility model purpose is exactly in order to remedy the defective of prior art; As long as make the inside of submersible motor guarantee not increasing of its humidity along with temperature and external influence; All the time the drying property and the stability of pressure that are all keeping the inner air of insulaion resistance; The phenomenon that makes submersible motor can not reach its dew-point temperature and produce condensation gets final product; Thereby make that insulating resistance value all is invariable all the time, therefore provide a kind of all submersible motor inside to install an air dryer systems additional in pumping plant, pump group.
The utility model is realized through following technical scheme:
The air dryer systems that is used for the submersible motor of large pumping station, pump group; Include air compressor; It is characterized in that: also include magnetic valve, oil water separator, pressure-reducing valve one, air dehumidifier, distributor; The gas outlet of described air compressor, magnetic valve one, oil water separator, pressure-reducing valve, air dehumidifier, distributor connect through pipeline successively; The gas outlet of distributor is inserted the air inlet pipe of each submersible motor respectively through pipeline, is respectively equipped with a magnetic valve two on the pipeline between the air inlet pipe of distributor and each submersible motor, and described air inlet pipe is deep into the inside of submersible motor; Also be provided with a blast pipe on the submersible motor, the place, gas outlet of blast pipe is provided with magnetic valve three.
The top of described distributor is provided with safety valve and Pressure gauge.
The maximum pressure ability to bear of described safety valve is 0.08Mpa, and manometric range is 0-0.2Mpa.
The principle of the utility model is:
When submersible motor too high because of humidity inside; When insulaion resistance resistance is lower than 1M, can open the valve of blast pipe, utilize the heat that produces in the submersible pump rotation; Send into air compressor and to dehumidify by air dehumidifier again after air takes out impurity and moisture through oil water separator; Submersible motor inside is carried out drying automatically, improve insulaion resistance, thereby improved the service life of submersible motor and reduced the frequency of maintenance of submersible motor and improved the utilization rate of submersible motor work.In addition, safety valve of establishing on the distributor and manometric effect are: when the pressure that measures when Pressure gauge reaches certain value, begin to open magnetic valve two; Give in the corresponding submersible motor and charge into dry air; If the submersible motor of this moment does not need drying, and during the maximum bearing ability of pressure overpressure table, venting will open the safety-valve; Prevent that the distributor internal pressure is excessive, cause blast.
The utility model has the advantages that:
The air compressor of the utility model can provide drying system for simultaneously 8 900ZDB submersible motors through test, and large pumping station is provided the quality assurance of high-quality and prolonged the service life of submersible motor and reduced the frequency of maintenance of submersible motor and improved the utilization rate of submersible motor work.
Description of drawings
The curve map that Fig. 1 changes with temperature and relative humidity variations for electrical machine insulation resistance.
Fig. 2 is the structural principle sketch map of the utility model.
The specific embodiment
As shown in Figure 2; The air dryer systems that is used for the submersible motor of large pumping station, pump group; Include air compressor 1, magnetic valve 2, oil water separator 3, pressure-reducing valve 1, air dehumidifier 5, distributor 6; The gas outlet of air compressor 1, magnetic valve 1, oil water separator 3, pressure-reducing valve 4, air dehumidifier 5, distributor 6 connect through pipeline successively; The gas outlet of distributor 6 is inserted the air inlet pipe 8 of each submersible motor respectively through pipeline, is respectively equipped with a magnetic valve 27 on the pipeline between the air inlet pipe 8 of distributor 6 and each submersible motor, and air inlet pipe 8 is deep into the inside of submersible motor; Also be provided with a blast pipe 9 on the submersible motor, the place, gas outlet of blast pipe is provided with magnetic valve 3 10.
The top of distributor 6 is provided with safety valve 11 and Pressure gauge 12.The maximum pressure ability to bear of safety valve 11 is 0.08Mpa, and the range of Pressure gauge 12 is 0-0.2Mpa.
Claims (3)
1. air dryer systems that is used for the submersible motor of large pumping station, pump group; Include air compressor; It is characterized in that: also include magnetic valve, oil water separator, pressure-reducing valve one, air dehumidifier, distributor; The gas outlet of described air compressor, magnetic valve one, oil water separator, pressure-reducing valve, air dehumidifier, distributor connect through pipeline successively; The gas outlet of distributor is inserted the air inlet pipe of each submersible motor respectively through pipeline, is respectively equipped with a magnetic valve two on the pipeline between the air inlet pipe of distributor and each submersible motor, and described air inlet pipe is deep into the inside of submersible motor; Also be provided with a blast pipe on the submersible motor, the place, gas outlet of blast pipe is provided with magnetic valve three.
2. the air dryer systems that is used for the submersible motor of large pumping station, pump group according to claim 1, it is characterized in that: the top of described distributor is provided with safety valve and Pressure gauge.
3. the air dryer systems that is used for the submersible motor of large pumping station, pump group according to claim 1 and 2 is characterized in that: the maximum pressure ability to bear of described safety valve is 0.08Mpa, and manometric range is 0-0.2Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220127394 CN202605994U (en) | 2012-03-30 | 2012-03-30 | Air drying system for submersible motors for large-scale pumping stations and pumping sets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220127394 CN202605994U (en) | 2012-03-30 | 2012-03-30 | Air drying system for submersible motors for large-scale pumping stations and pumping sets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202605994U true CN202605994U (en) | 2012-12-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220127394 Expired - Lifetime CN202605994U (en) | 2012-03-30 | 2012-03-30 | Air drying system for submersible motors for large-scale pumping stations and pumping sets |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202605994U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110806065A (en) * | 2019-11-05 | 2020-02-18 | 广州文冲船厂有限责任公司 | Dehumidification method of motor |
-
2012
- 2012-03-30 CN CN 201220127394 patent/CN202605994U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110806065A (en) * | 2019-11-05 | 2020-02-18 | 广州文冲船厂有限责任公司 | Dehumidification method of motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121219 |
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| CX01 | Expiry of patent term |