CN203201603U - Turbo expander with pressure and rotating speed intelligent protective device - Google Patents
Turbo expander with pressure and rotating speed intelligent protective device Download PDFInfo
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- CN203201603U CN203201603U CN 201320238019 CN201320238019U CN203201603U CN 203201603 U CN203201603 U CN 203201603U CN 201320238019 CN201320238019 CN 201320238019 CN 201320238019 U CN201320238019 U CN 201320238019U CN 203201603 U CN203201603 U CN 203201603U
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- pressure
- relay
- turbo
- expander
- main shaft
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Abstract
The utility model discloses a turbo expander with a pressure and 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, a first two-position-three-way solenoid valve and a second two-position-three-way solenoid valve in sequence. The turbo expander further comprises the protective device which comprises a pressure sensor for measuring the gas pressure of the bearing gas of the suspended main shaft, a speed sensor for measuring the rotating speed of the main shaft, a controller respectively connected with the pressure sensor and the speed sensor, and a first relay, a second relay and a third relay which are connected with the controller. The controller controls an alertor through the first relay, controls the first two-position-three-way solenoid valve through the second relay and controls the second two-position-three-way solenoid valve through the third 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 pressure and 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.Because the gap between bearing and the main shaft is very little, is the requirement of satisfying highi degree of accuracy, running up, turbo-expander adopts gas lubrication more, uses bearing gas that main shaft is carried out air supporting unsettled.In case the bearing atmospheric pressure does not reach requirement, the gas that should quit work immediately input, thus quit work wheel and main shaft rotation.Otherwise main shaft contacts with bearing, and High Rotation Speed produces friction, causes burning machine accident.In addition, main shaft also should be avoided the phenomenon that exceeds the speed limit as far as possible in the process that runs up, otherwise very easily damages 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 bearing atmospheric pressure table and spindle speed table, in case the bearing atmospheric pressure does not reach requirement, must close manually the stop valve of work gas import, the gas that quits work input, thus quit work wheel and main shaft rotation.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 bearing atmospheric pressure table and 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 pressure and rotating speed intelligent protection device.
A kind of turbo-expander with pressure and 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, the first two-bit triplet solenoid valve, the second two-bit triplet solenoid valve; Also comprise a protective gear; described protective gear comprises for the pressure transducer of measuring suspension main shaft bearing gas gas pressure and the velocity transducer that is used for measuring spindle speed; the controller that is connected with velocity transducer with pressure transducer respectively; the first relay that is connected with controller, the second relay and the 3rd relay; controller is by the first Control alarm; by the second Control the first two-bit triplet solenoid valve, by the 3rd Control the second two-bit triplet solenoid valve.
The beneficial effects of the utility model are: adopts pressure sensor converts pressure signal to electrical signal and inputs to controller, adopt simultaneously 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 control work gas, 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, bearing atmospheric pressure table, 5, pressure transducer, 6, operating air pressure power table, 7, controller, the 8, first relay, 9, alarm, the 10, second relay, 11, work air filter, 12, hand stop valve, the 13, first two-bit triplet solenoid valve, 14, the active wheel end, 15, main shaft, 16, the impeller of blower end, 17, velocity transducer, 18, tachometer, the 19, the 3rd relay, the 20, second two-bit triplet solenoid valve.
Embodiment
As shown in Figure 1, a kind of turbo-expander with pressure and 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, the first two-bit triplet solenoid valve 13, the second two-bit triplet solenoid valve 20; Also comprise a protective gear; described protective gear comprises for the pressure transducer 5 of measuring suspension main shaft 15 bearing gas gas pressures and for the velocity transducer 17 of measuring main shaft 15 rotating speeds; are connected the controller 7 that is connected with velocity transducer with pressure transducer 5 respectively; the first relay 8 that is connected with controller 7, the second relay 10 and the 3rd relay 19; controller 7 is by the first relay 8 control alarms 9; by the second relay 10 controls the first two-bit triplet solenoid valve 13, by the 3rd relay 19 controls the second two-bit triplet solenoid valve 20.
Wherein, described alarm 9 adopts buzzer.Described controller 7 adopts single-chip microcomputer.In order better to show the bearing gas gas pressure of suspension main shaft 15 and the rotating speed of main shaft 15, comprise that also one is used for showing that the bearing atmospheric pressure table 4 and of suspension main shaft 15 bearing gas gas pressures is for the tachometer 18 that shows 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 the first two-bit triplet solenoid valve through work air filter 11, enter the 20 right side gas inlets of the second two-bit triplet solenoid valve from the left side gas outlet, then enter the active wheel end 14 of turbo-expander from the left side gas outlet, the wheel High Rotation Speed pushes the work forward, active wheel drives 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.
The bearing atmospheric pressure is measured by bearing atmospheric pressure table 4, and converts electrical signal to by pressure transducer 5 and input to controller 7.When the bearing atmospheric pressure was not in the rated pressure scope, 8 adhesives of controller 7 controls the first relay were sent alarm sound behind alarm 9 pluggeds.Simultaneously, 10 adhesives of controller 7 controls the second relay behind the first two-bit triplet solenoid valve 13 pluggeds are closed the left side gas outlet, and the atmospheric valve of bottom is all opened, the emptying of work gas, and active wheel and main shaft 15 stop operating, and 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 pressure and 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), the first two-bit triplet solenoid valve (13), the second two-bit triplet solenoid valve (20) enter turbo-expander successively; It is characterized in that: also comprise a protective gear; described protective gear comprises for the pressure transducer (5) of measuring suspension main shaft (15) bearing gas gas pressure and for the velocity transducer (17) of measuring main shaft (15) rotating speed; be connected 17 with pressure transducer (5) with velocity transducer respectively) controller (7) that is connected; the first relay (8) that is connected with controller (7); the second relay (10) and the 3rd relay (19); controller (7) is by the first relay (8) control alarm (9); by the second relay (10) control the first two-bit triplet solenoid valve (13), by the 3rd relay (19) control the second two-bit triplet solenoid valve (20).
2. a kind of turbo-expander with pressure and 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 pressure and 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 pressure and rotating speed intelligent protection device according to claim 1 and 2 is characterized in that: comprise that also one is used for showing that the bearing atmospheric pressure table (4) and of suspension main shaft (15) bearing gas gas pressure is used for the tachometer (18) of demonstration main shaft (15) rotating speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320238019 CN203201603U (en) | 2013-05-06 | 2013-05-06 | Turbo expander with pressure and rotating speed intelligent protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320238019 CN203201603U (en) | 2013-05-06 | 2013-05-06 | Turbo expander with pressure and rotating speed intelligent protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203201603U true CN203201603U (en) | 2013-09-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320238019 Expired - Fee Related CN203201603U (en) | 2013-05-06 | 2013-05-06 | Turbo expander with pressure and rotating speed intelligent protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203201603U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114441168A (en) * | 2020-11-04 | 2022-05-06 | 中国科学院理化技术研究所 | Testing device and turbo expander |
-
2013
- 2013-05-06 CN CN 201320238019 patent/CN203201603U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114441168A (en) * | 2020-11-04 | 2022-05-06 | 中国科学院理化技术研究所 | Testing device and turbo expander |
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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 |