CN201188013Y - Measuring instrument for engine air leakage - Google Patents
Measuring instrument for engine air leakage Download PDFInfo
- Publication number
- CN201188013Y CN201188013Y CNU2008200605095U CN200820060509U CN201188013Y CN 201188013 Y CN201188013 Y CN 201188013Y CN U2008200605095 U CNU2008200605095 U CN U2008200605095U CN 200820060509 U CN200820060509 U CN 200820060509U CN 201188013 Y CN201188013 Y CN 201188013Y
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- gas
- voltage stabilizing
- engine
- cartridge filter
- measurement instrument
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Abstract
The utility model relates to a measuring instrument for measuring the gas leakage of an engine. The measuring device comprises an engine leaking gas inlet, a gasometer and a leaking gas outlet. The gasometer is selected from a laminar flowmeter which is composed of laminar elements, pressure sensors, a pressure difference sensor, a temperature sensor and a flow accumulation meter. The gas passes through the laminar elements and the pressure sensors arranged beside the gas inlets and the gas outlets of the laminar elements, the pressure difference on the pressure sensors undergoes data process through the pressure difference sensor, and then the real-time flow is displayed. The utility model has the advantages of applicability for measuring the gas leakage of the engine, wide flow scope, high measurement accuracy, large measuring range ratio, good wearability, convenient maintenance, stable and reliable display, simple demarcation, convenient use, and simple installation and use.
Description
Technical field
The utility model relates to a kind of equipment of measuring the engine piston air leakage, particularly discloses a kind of engine gas leak meter.
Background technology
At present, since Otto cycle engine air inlet characteristics be rely on air in cylinder with fuel combustion after the volumetric expansion work done, between piston and the cylinder jacket by piston ring packing, but because the sealed characteristic of piston ring, leak air inevitably, so the air leakage of engine is a main technical indicator in the engine design performance history.
The characteristics of engine air leakage are: air leakage is little; Different engine air leakage numerical value difference are very big, may be from several several hectolitres of per minute that rise to of per minute; It is relevant with in-cylinder pressure to leak gas, and gas leakage is discontinuous air-flow; Pollute heavy in the gas leakage.Engine gas leakage is discontinuous gas leakage, and being used for measuring engine gas leakage flow does not also have suitable flowmeter, common general gas meter such as the suspended body flowmeter that adopts, and vortex shedding flow meters etc. can not be satisfied the demand fully.
Summary of the invention
The purpose of this utility model is to overcome problems of the prior art, and a kind of measuring accuracy height, simple in structure, engine gas leak meter that range ratio is wide are provided.
The utility model is achieved in that a kind of engine gas leak meter, comprise engine gas leakage import, gas measurement instrument, gas leakage escape hole, it is characterized in that: described gas measurement instrument is selected laminar flow flowmeter, described laminar flow flowmeter is made up of laminar flow element, pressure transducer, differential pressure pickup, temperature sensor, flow totalizer meter, gas shows real-time traffic by the pressure transducer of laminar flow element and laminar flow element air inlet/outlet side device after the pressure differential process flow totalizer meter data processing on the pressure transducer.
Be provided with the voltage stabilizing cartridge filter between described engine gas leakage import and the gas measurement instrument, be provided with screen pack and voltage stabilizing rubber diaphragm in the voltage stabilizing cartridge filter, to filter with voltage stabilizing and be integrated in one, also be provided with intermediate connection tube on the voltage stabilizing cartridge filter, intermediate connection tube is connected on the gas measurement instrument on voltage stabilizing cartridge filter top.
Described voltage stabilizing cartridge filter bottom also is provided with sewage draining exit.
Described gas measurement instrument, voltage stabilizing cartridge filter are located in device on traversing carriage.
Laminar flow flowmeter is as the separate case application, and this place is not described further.
The beneficial effects of the utility model are: be applicable to the measurement of engine air leakage; Flow range: 0-1,000L/min measuring accuracy: ± 0.5%～± 1.0%; Has the wide range ratio; Applicable temperature :-50 ℃～250 ℃; Intellectuality directly shows air leakage; Useful life longevity is good, and is easy to maintenance; Show reliable and stablely, demarcate simple; Repeatable accuracy: ± 0.25% simulation output: 4-20mA, 0-10mA; 1-5V, 0-10V; Communication output: RS232/485; Good characteristic: the response time is short, and crushing is little, does not influence the engine air leakage; Easy to use: installation, easy to use.
Description of drawings
Accompanying drawing is the utility model structural representation.
Among the figure: 1, gas measurement instrument, 2, intermediate connection tube, 3, engine gas leakage import, 4, traversing carriage, 5, sewage draining exit, 6, the voltage stabilizing cartridge filter, 7, the voltage stabilizing rubber diaphragm, 8, the gas leakage escape hole.
Embodiment
With reference to the accompanying drawings, the utility model comprises engine gas leakage import 3, gas measurement instrument 1, gas leakage escape hole 8, described gas measurement instrument 1 is selected laminar flow flowmeter, described laminar flow flowmeter is made up of laminar flow element, pressure transducer, differential pressure pickup, temperature sensor, flow totalizer meter, gas shows real-time traffic by the pressure transducer of laminar flow element and laminar flow element air inlet/outlet side device after the pressure differential process flow totalizer meter data processing on the pressure transducer.Be provided with voltage stabilizing cartridge filter 6 between described engine gas leakage import 3 and the gas measurement instrument 1, be provided with screen pack and voltage stabilizing rubber diaphragm 7 in the voltage stabilizing cartridge filter 6, to filter with voltage stabilizing and be integrated in one, also be provided with intermediate connection tube 2 on the voltage stabilizing cartridge filter 6, intermediate connection tube 2 is connected on the gas measurement instrument 1 on voltage stabilizing cartridge filter 6 tops.Described voltage stabilizing cartridge filter 6 bottoms also are provided with sewage draining exit 5.Described gas measurement instrument 1, voltage stabilizing cartridge filter 6 are located in device on traversing carriage 4.
Engine gas leakage enters from engine gas leakage import 3, measures air leakage through entering gas measurement instrument 1 behind voltage stabilizing cartridge filter 6 and the intermediate connection tube 2, flows out from gas leakage escape hole 8 at last.
Characteristics of the present utility model are: described gas measurement instrument 1 adopts laminar flow amount flowmeter, can show real-time traffic, And can be with real-time traffic by analog quantity and data communication RS485 (RS232) output. Intermediate connection tube 2 adopts stainless steel Bellows. Voltage stabilizing cartridge filter 6 is that voltage stabilizing and filtration are integrated, and voltage stabilizing rubber membrane 7 is equipped with on its top.
Claims (4)
1. an engine gas leak meter comprises engine gas leakage import, gas measurement instrument, gas leakage escape hole, it is characterized in that:
Described gas measurement instrument is selected laminar flow flowmeter, described laminar flow flowmeter is made up of laminar flow element, pressure transducer, differential pressure pickup, temperature sensor, flow totalizer meter, gas shows real-time traffic by the pressure transducer of laminar flow element and laminar flow element air inlet/outlet side device after the pressure differential process flow totalizer meter data processing on the pressure transducer.
2. engine gas leak meter according to claim 1, it is characterized in that: be provided with the voltage stabilizing cartridge filter between described engine gas leakage import and the gas measurement instrument, be provided with screen pack and voltage stabilizing rubber diaphragm in the voltage stabilizing cartridge filter, to filter with voltage stabilizing and be integrated in one, also be provided with intermediate connection tube on the voltage stabilizing cartridge filter, intermediate connection tube is connected on the gas measurement instrument on voltage stabilizing cartridge filter top.
3. engine gas leak meter according to claim 2 is characterized in that: described voltage stabilizing cartridge filter bottom also is provided with sewage draining exit.
4. according to claim 1 or 2 or 3 described engine gas leak meters, it is characterized in that: described gas measurement instrument, voltage stabilizing cartridge filter are located in device on traversing carriage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200605095U CN201188013Y (en) | 2008-04-15 | 2008-04-15 | Measuring instrument for engine air leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200605095U CN201188013Y (en) | 2008-04-15 | 2008-04-15 | Measuring instrument for engine air leakage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201188013Y true CN201188013Y (en) | 2009-01-28 |
Family
ID=40311038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200605095U Expired - Lifetime CN201188013Y (en) | 2008-04-15 | 2008-04-15 | Measuring instrument for engine air leakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201188013Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411741A (en) * | 2013-05-28 | 2013-11-27 | 沈阳黎明航空发动机(集团)有限责任公司 | Graphite ring seal test monitoring system based virtual instrument |
| CN104006932A (en) * | 2013-02-21 | 2014-08-27 | 斯沃奇集团研究和开发有限公司 | Electronic device provided with automatic leak detection means |
| CN106092247A (en) * | 2016-07-02 | 2016-11-09 | 王秀华 | A kind of detection device of internal combustion engine air leakage |
| CN112729685A (en) * | 2020-11-30 | 2021-04-30 | 上海典圆测试设备有限公司 | Calibration device for DET piston air leakage measuring instrument |
| CN117760658A (en) * | 2023-12-29 | 2024-03-26 | 昆明理工大学 | Rotor engine air leakage static detection device and method |
-
2008
- 2008-04-15 CN CNU2008200605095U patent/CN201188013Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006932A (en) * | 2013-02-21 | 2014-08-27 | 斯沃奇集团研究和开发有限公司 | Electronic device provided with automatic leak detection means |
| CN104006932B (en) * | 2013-02-21 | 2017-09-22 | 斯沃奇集团研究和开发有限公司 | Electronic installation with automatic leak detection part |
| CN103411741A (en) * | 2013-05-28 | 2013-11-27 | 沈阳黎明航空发动机(集团)有限责任公司 | Graphite ring seal test monitoring system based virtual instrument |
| CN106092247A (en) * | 2016-07-02 | 2016-11-09 | 王秀华 | A kind of detection device of internal combustion engine air leakage |
| CN112729685A (en) * | 2020-11-30 | 2021-04-30 | 上海典圆测试设备有限公司 | Calibration device for DET piston air leakage measuring instrument |
| CN117760658A (en) * | 2023-12-29 | 2024-03-26 | 昆明理工大学 | Rotor engine air leakage static detection device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI TONGYUAN ENGINES TEST ENGINEERING CO., LT Free format text: FORMER OWNER: SHANGHAI TONGYUAN ENVIRONMENT TECHNOLOGY CO., LTD. Effective date: 20100727 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20100727 Address after: 200433 Shanghai city Yangpu District Songhu Road No. 98 room 1103 Patentee after: Shanghai with a Round Engine Test Engineering Technology Co., Ltd. Address before: 200433 Shanghai city Yangpu District Songhu Road No. 98 room 1103 Patentee before: Shanghai Tongyuan Environment Technology Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20090128 |
|
| CX01 | Expiry of patent term |