CN203201599U - Turbo expander with rotating speed intelligent protective device - Google Patents
Turbo expander with rotating speed intelligent protective device Download PDFInfo
- Publication number
- CN203201599U CN203201599U CN 201320238020 CN201320238020U CN203201599U CN 203201599 U CN203201599 U CN 203201599U CN 201320238020 CN201320238020 CN 201320238020 CN 201320238020 U CN201320238020 U CN 201320238020U CN 203201599 U CN203201599 U CN 203201599U
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- turbo
- expander
- rotating speed
- relay
- turbo expander
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- Control Of Turbines (AREA)
Abstract
The utility model discloses a turbo expander with a rotating speed intelligent protective device and relates to the technical field of turbo expander protection. Braking gas enters a fan wheel end of the turbo expander through a braking gas filter. Bearing gas suspends a main shaft of the turbo expander through a bearing gas filter and a pressure reducing valve. Working gas enters a working wheel end of the turbo expander through a working gas filter, a manual stop valve and a two-position-three-way solenoid valve in sequence. The turbo expander further comprises the protective device which comprises a speed sensor for measuring the rotating speed of the main shaft, a controller connected with the speed sensor, and a first relay and a second relay which are connected with the controller. The controller controls the two-position-three-way solenoid valve through the second relay and controls an alertor through the first relay. The turbo expander has the advantages of being low in investment cost, high in automation degree, short in reaction time, wide in application range and good in protecting effect.
Description
Technical field
The utility model relates to turbo-expander resist technology field, specifically a kind of turbo-expander with the rotating speed intelligent protection device.
Background technique
Complex structure, the assembly precision of turbo-expander are high, and the general rotating speed of main shaft is higher, generally turn lower operation at per minute several ten thousand, and what have turns up to per minute more than 10 ten thousand, in case the hypervelocity phenomenon occurs, are very easy to damage parts.Turbo-expander is provided with the braking facility more, can play certain protective action, but operating air pressure power is when too high, and braking effect is not obvious, the generation of the phenomenon that still can cause exceeding the speed limit.
The mode of existing general employing is manual observation spindle speed table, in case the spindle speed overrate must be regulated the stop valve of work gas import manually, reduce the input of work gas, reduce operating air pressure power, thereby active wheel and spindle speed are down in the normal range (NR).This mode requires operator to observe the variation of spindle speed table always, inefficiency, and the reaction time is long, the protection weak effect.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the utility model provides a kind of turbo-expander with the rotating speed intelligent protection device.
A kind of turbo-expander with the rotating speed intelligent protection device, comprise a turbo-expander, braking gas enters the impeller of blower end of turbo-expander by the braking air filter, bearing gas is through the main shaft of bearing air filter, reduction valve suspension turbo-expander, and work gas enters the active wheel end of turbo-expander successively through work air filter, hand stop valve, two-bit triplet solenoid valve; Also comprise a protective gear; described protective gear comprises for the velocity transducer of measuring spindle speed; the controller that is connected with velocity transducer; the first relay that is connected with controller and the second relay; controller is by the second Control two-bit triplet solenoid valve, by the first Control alarm.
The beneficial effects of the utility model are: adopt velocity transducer to convert rate signal to electrical signal and input to controller, by the controller automatic control relay, and then control two-bit triplet solenoid valve and alarm, thereby the pressure of control work gas and the rotating speed of active wheel and main shaft, and send alarm sound, play the effect of protection decompressor; Cost of investment is low, and automaticity is high, and the reaction time is short, and is applied widely, protects effective.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the utility model structural representation.
Among the figure: 1, braking air filter, 2, reduction valve, 3, the bearing air filter, 4, tachometer, 5, velocity transducer, 6, operating air pressure power table, 7, controller, the 8, first relay, 9, alarm, 10, the second relay, 11, the work air filter, 12, hand stop valve, 13, two-bit triplet solenoid valve, 14, active wheel end, 15, main shaft, 16, the impeller of blower end.
Embodiment
As shown in Figure 1, a kind of turbo-expander with the rotating speed intelligent protection device, comprise a turbo-expander, braking gas enters the impeller of blower end 16 of turbo-expander by braking air filter 1, bearing gas is through the main shaft 15 of bearing air filter 3, reduction valve 2 suspension turbo-expanders, and work gas enters the active wheel end 14 of turbo-expander successively through work air filter 11, hand stop valve 12, two-bit triplet solenoid valve 13; Also comprise a protective gear; described protective gear comprises for the velocity transducer 5 of measuring main shaft 15 rotating speeds; the controller 7 that is connected with velocity transducer 5; the first relay 8 that is connected with controller 7 and the second relay 10; controller 7 is by the second relay 10 control two-bit triplet solenoid valves 13, by the first relay 8 control alarms 9.
Wherein, described alarm 9 adopts buzzer.Described controller 7 adopts single-chip microcomputer.In order better to show the rotating speed of main shaft 15, comprise that also one is used for showing the tachometer 4 of main shaft 15 rotating speeds.
Working procedure: turbo-expander adopts gas lubrication, and bearing gas is through bearing air filter 3, and in the rated pressure scope, entering decompressor, that main shaft 15 is carried out air supporting is unsettled, satisfies the requirement of main shaft 15 High Rotation Speeds through reduction valve 2 decompressions.
During turbo-expander work, after the bearing atmospheric pressure reaches requirement, open hand stop valve 12, working gas enters the 13 right side gas inlets of two-bit triplet solenoid valve through work air filter 11, enter the active wheel end 14 of turbo-expander from the left side gas outlet, the wheel High Rotation Speed that pushes the work forward, active wheel drive main shaft 15 rotations, and the cryogenic gas after the acting of expanding is discharged from the outlet of work gas.Simultaneously, main shaft 15 drives the impeller of blower rotation, and braking gas enters turbo-expander impeller of blower end 16 through braking air filter 1, plays certain braking action.
After velocity transducer 5 converts the rotating speed of main shaft 15 to electrical signal, show and input to controller 7 by tachometer 4.When the rotating speed overrate of main shaft 15,8 adhesives of controller 7 controls the first relay are sent alarm sound behind alarm 9 pluggeds.Simultaneously, 10 adhesives of controller 7 controls the second relay behind two-bit triplet solenoid valve 13 pluggeds are opened the atmospheric valve part of bottom, the emptying of work gas part, and pressure decreased, thus active wheel and main shaft 15 rotating speeds are down in the normal range (NR), play a protective role.
In the working procedure, operating air pressure power is measured by operating air pressure power table 6.
Claims (4)
1. turbo-expander with the rotating speed intelligent protection device, comprise a turbo-expander, braking gas enters the impeller of blower end (16) of turbo-expander by braking air filter (1), bearing gas is through the main shaft (15) of bearing air filter (3), reduction valve (2) suspension turbo-expander, and work gas passes through the active wheel end (14) that work air filter (11), hand stop valve (12), two-bit triplet solenoid valve (13) enter turbo-expander successively; It is characterized in that: also comprise a protective gear; described protective gear comprises for the velocity transducer (5) of measuring main shaft (15) rotating speed; the controller (7) that is connected with velocity transducer (5); the first relay (8) that is connected with controller and the second relay (10); controller (7) is by the second relay (10) control two-bit triplet solenoid valve (13), by the first relay (8) control alarm (9).
2. a kind of turbo-expander with the rotating speed intelligent protection device according to claim 1 is characterized in that: described alarm (9) employing buzzer.
3. a kind of turbo-expander with the rotating speed intelligent protection device according to claim 1 and 2 is characterized in that: described controller (7) employing single-chip microcomputer.
4. a kind of turbo-expander with the rotating speed intelligent protection device according to claim 1 and 2 is characterized in that: comprise that also one is used for showing the tachometer (4) of main shaft (15) rotating speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320238020 CN203201599U (en) | 2013-05-06 | 2013-05-06 | Turbo expander with rotating speed intelligent protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320238020 CN203201599U (en) | 2013-05-06 | 2013-05-06 | Turbo expander with rotating speed intelligent protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203201599U true CN203201599U (en) | 2013-09-18 |
Family
ID=49145714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320238020 Expired - Fee Related CN203201599U (en) | 2013-05-06 | 2013-05-06 | Turbo expander with rotating speed intelligent protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203201599U (en) |
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2013
- 2013-05-06 CN CN 201320238020 patent/CN203201599U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130918 Termination date: 20140506 |