CN205175697U - A analogue means for engine surge protection - Google Patents
A analogue means for engine surge protection Download PDFInfo
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- CN205175697U CN205175697U CN201520865791.4U CN201520865791U CN205175697U CN 205175697 U CN205175697 U CN 205175697U CN 201520865791 U CN201520865791 U CN 201520865791U CN 205175697 U CN205175697 U CN 205175697U
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Abstract
The utility model discloses an analogue means for engine surge protection, include: the detector is manage and is said that the pressure sensing who communicates to the engine exports for experience the pressure variation of pressure sensing export, be equipped with first cavity, second cavity in the detector, first cavity communicates through the flow nipple with the second cavity, still including the pressure annunciator who is used for detecting pressure difference between first cavity and second cavity, pressure annunciator's output is connected and is used for carrying out the differentiator that the differential was handled to the pressure value that detects, and the output connect the processor of differentiator, treater generate and be used for control engine to surge the instruction of protection for surging protection device. Through the detector of setting with the pressure sensing export intercommunication of engine, and communicate through the flow nipple between two cavitys of detector for two cavitys pressure differential has within a definite time reflected the pressure variation of pressure sensing export, has replaced traditional dear detector of surging, and has reduced the maintenance cost.
Description
Technical field
The utility model relates to engine surge protection field, especially, relates to a kind of analogue means for engine surge protection.
Background technology
In the very first time, the function of surge detection device detects whether engine surge occurs exactly, be one barrier guaranteeing engine run safety.General turboshaft engine test bay surge detection device used is introduced with engine apparatus the whole series, apparatus expensive and generally need import to purchase, equipment to reprocess maintenance cost high.For saving cost and guaranteeing the consideration of engine run safety, needing that design is a kind of badly can the device of simulated engine surge protection.
Utility model content
The utility model provides a kind of analogue means for engine surge protection, to solve the technical matters that existing engine surge detector is expensive and maintenance cost is high.
The technical solution adopted in the utility model is as follows:
For an analogue means for engine surge protection, comprising:
Detector, through pipeline communication to the pressure detection outlet of engine, changes for the pressure experiencing pressure detection outlet;
Be provided with the first cavity, the second cavity in detector, the first cavity is communicated with through flow nipple with the second cavity, and wherein, the first cavity exports to pressure detection through pipeline communication;
Also comprise the pressure signal device for detecting pressure difference value between the first cavity and the second cavity, the output terminal of pressure signal device connects the differentiator being used for the force value detected being carried out to differential process, the output terminal connection handling device of differentiator,
Processor receive differentiator output valve and generate for control engine surge protection instruction to surge-protecting device.
Further, the sidewall of the first cavity is provided with the first through hole, and the sidewall of the second cavity is provided with the second through hole, is communicated with by the road between the first through hole with the second through hole, and at least one place of pipeline inner wall is provided with annular protrusion to form flow nipple.
Further, differentiator is integrated on processor.
Further, processor is connected with the pilot lamp being used to indicate whether starting engine surge protection.
Further, engine is turboshaft engine.
The utility model has following beneficial effect:
The utility model is used for the analogue means of engine surge protection; by arranging the detector detecting outlet with the pressure of engine; and be communicated with through flow nipple between two of detector cavitys; the pressure differential between two cavitys is made to reflect the pressure change of pressure detection outlet; for controlling the instruction of engine surge protection to substitute the surge detection device of traditional costliness, and maintenance cost is reduced further by differentiator, processor generation.
Except object described above, feature and advantage, the utility model also has other object, feature and advantage.Below with reference to figure, the utility model is described in further detail.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the analogue means that the utility model preferred embodiment is protected for engine surge.
Description of reference numerals:
10, detector; 11, the first cavity; 111, the first through hole; 12, the second cavity;
121, the second through hole; 13, pipeline; 14, annular protrusion; 15, flow nipple;
20, pipeline;
30, pressure signal device;
40, differentiator;
50, processor.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
Preferred embodiment of the present utility model provides a kind of analogue means for engine surge protection, by the parameter acquisition of the pressure detection outlet to engine and the surge protection of detection simulated engine commissioning process, to guarantee test run safety.With reference to Fig. 1, the present embodiment analogue means comprises:
Detector 10, is communicated to the pressure detection outlet of engine through pipeline 20, for experiencing the pressure change of pressure detection outlet;
Be provided with the first cavity 11, second cavity 12, first cavity 11 in detector 10 to be communicated with through flow nipple 15 with the second cavity 12, wherein, the first cavity 11 is communicated to pressure detection outlet through pipeline 20;
Also comprise the pressure signal device 30 for detecting pressure difference value between the first cavity 11 and the second cavity 12; the output terminal of pressure signal device 30 connects the differentiator 40 being used for the force value detected being carried out to differential process; the output terminal connection handling device 50 of differentiator 40, processor 50 receive differentiator 40 output valve and generate for control engine surge protection instruction to surge-protecting device.
When according to the parameter detected, processor 50 judges that engine enters surging condition, then output order is to surge-protecting device, to make engine cut-off protect, guarantees test run safety.
The present embodiment detects the detector 10 of outlet with the pressure of engine by arranging; and be communicated with through flow nipple 15 between two of detector 10 cavitys; the pressure differential between two cavitys is made to reflect the pressure change of pressure detection outlet; generate instruction for controlling engine surge protection to substitute the surge detection device of traditional costliness further by differentiator 40, processor 50, and reduce maintenance cost.
The principle of work that the present embodiment is used for the detector 10 of surge detection is as follows: the pressure of the pressure of engine detection outlet is guided to detector 10, detector is divided into upper and lower two chambeies, i.e. the first cavity 11 and the second cavity 12, first cavity 11 and the second cavity 12 communicate through flow nipple 15, the pressure of pressure detection outlet introduces the first cavity 11, when there is rapid fluctuations in the top hole pressure of engine, second cavity 12 is because the throttling action of flow nipple 15, pressure change is slower, due to the effect of flow nipple 15, two chambeies form △ P, what in fact reflect is the change that the pressure of engine detects mouth pressure.The present embodiment carries out differential to the discrete △ P signal of sampling, also just obtains the rate of change of △ P pressure, that is: d △ P/dt after adopting pressure signal device 30 to record △ P continuously.Preferably, utilize the surge detection device that TM company calibrated, as the digitized master body of surge detection device, obtain surge detection device by data acquisition and send the Pressure differential value of the pressure detection outlet of the correspondence in surge signal moment as engine surge standard calibration, engine export pressure low-frequency vibration amplitude size when determining surge.The output of surge detection device is converted into the threshold value of mathematical model as processor 50 of surge detection device, thus makes processor 50 export the instruction for controlling engine surge protection according to the parameter received.
With reference to Fig. 1, in the present embodiment, preferably, the sidewall of the first cavity 11 is provided with the first through hole 111, the sidewall of the second cavity 12 is provided with the second through hole 121, first through hole 111 and 13 is communicated with by the road with between the second through hole 121, and at least one place of pipeline 13 inwall is provided with annular protrusion 14 to form flow nipple 15.The flow nipple 15 of this structure can not affect the accuracy of detection of pressure signal device 30 to pressure difference value between two cavitys, improves the accuracy of surge protection.
Preferably, the present embodiment differentiator 40 is integrated on processor 50, makes whole analogue means compact conformation, and avoids line complicated.
Preferably, processor 50 is connected with the pilot lamp being used to indicate whether starting engine surge protection, when processor 50 generate instruction to control surge-protecting device, stop-working protection is carried out to engine time, pilot lamp is lighted simultaneously under the driving of processor.
Preferably, engine is turboshaft engine.
During aeromotor factory inspection, when one or more parts (axial wheel, centrifugal impeller, compressor casing, radial and axial diffuser) of gas generator air duct are changed, possible runner Parameters variation thus when causing engine surge, then need to adopt the present embodiment analogue means to carry out surge test.
Can learn from above description; the present embodiment detects the detector 10 of outlet with the pressure of engine by arranging; and be communicated with through flow nipple 15 between two of detector 10 cavitys; the pressure differential between two cavitys is made to reflect the pressure change of pressure detection outlet; instruction for controlling engine surge protection is generated to substitute the surge detection device of traditional costliness further by differentiator 40, processor 50; and reduce maintenance cost, be beneficial to engine run and factory inspection.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1., for an analogue means for engine surge protection, it is characterized in that, comprising:
Detector (10), is communicated to the pressure detection outlet of engine through pipeline (20), for experiencing the pressure change of described pressure detection outlet;
The first cavity (11), the second cavity (12) is provided with in described detector (10), described first cavity (11) is communicated with through flow nipple (15) with described second cavity (12), wherein, described first cavity (11) is communicated to described pressure detection outlet through described pipeline (20);
Also comprise the pressure signal device (30) for detecting pressure difference value between described first cavity (11) and described second cavity (12), the output terminal of described pressure signal device (30) connects the differentiator (40) being used for the force value detected being carried out to differential process, the output terminal connection handling device (50) of described differentiator (40)
Described processor (50) receive described differentiator (40) output valve and generate for control engine surge protection instruction to surge-protecting device.
2. the analogue means for engine surge protection according to claim 1, is characterized in that,
The sidewall of described first cavity (11) is provided with the first through hole (111), the sidewall of described second cavity (12) is provided with the second through hole (121), between described first through hole (111) with described second through hole (121), (13) are communicated with by the road, and at least one place of described pipeline (13) inwall is provided with annular protrusion (14) to form described flow nipple (15).
3. the analogue means for engine surge protection according to claim 2, is characterized in that,
Described differentiator (40) is integrated on described processor (50).
4. the analogue means for engine surge protection according to claim 3, is characterized in that,
Described processor (50) is connected with the pilot lamp being used to indicate whether starting engine surge protection.
5., according to the arbitrary described analogue means for engine surge protection of Claims 1-4, it is characterized in that,
Described engine is turboshaft engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520865791.4U CN205175697U (en) | 2015-11-02 | 2015-11-02 | A analogue means for engine surge protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520865791.4U CN205175697U (en) | 2015-11-02 | 2015-11-02 | A analogue means for engine surge protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205175697U true CN205175697U (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520865791.4U Active CN205175697U (en) | 2015-11-02 | 2015-11-02 | A analogue means for engine surge protection |
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| Country | Link |
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| CN (1) | CN205175697U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112067302A (en) * | 2020-09-17 | 2020-12-11 | 中国航发沈阳黎明航空发动机有限责任公司 | Surge pressure signal measuring structure for aircraft engine |
-
2015
- 2015-11-02 CN CN201520865791.4U patent/CN205175697U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112067302A (en) * | 2020-09-17 | 2020-12-11 | 中国航发沈阳黎明航空发动机有限责任公司 | Surge pressure signal measuring structure for aircraft engine |
| CN112067302B (en) * | 2020-09-17 | 2022-10-04 | 中国航发沈阳黎明航空发动机有限责任公司 | Surge pressure signal measuring structure for aircraft engine |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 412002 Dong Jiaduan, Zhuzhou, Hunan Patentee after: China Hangfa South Industrial Co. Ltd. Address before: 412002 Dong Jiaduan, Zhuzhou, Hunan Patentee before: China Southern Airlines Industry (Group) Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |