CN202013316U - Differential pressure type flow resistance tester - Google Patents
Differential pressure type flow resistance tester Download PDFInfo
- Publication number
- CN202013316U CN202013316U CN2011200536129U CN201120053612U CN202013316U CN 202013316 U CN202013316 U CN 202013316U CN 2011200536129 U CN2011200536129 U CN 2011200536129U CN 201120053612 U CN201120053612 U CN 201120053612U CN 202013316 U CN202013316 U CN 202013316U
- Authority
- CN
- China
- Prior art keywords
- differential pressure
- processing unit
- pipeline
- data processing
- film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Measuring Volume Flow (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a differential pressure type flow resistance tester, which is characterized by adopting two film differential pressure sensors. The two film differential pressure sensors respectively collect pipeline pressures at a test point A and a test point B which are in a pipeline through a sampling hole. The tester is provided with a data processing unit, an external display unit and a key input unit, wherein the data processing unit is formed by a central processing unit, a data storage, a program storage and a conversion interface circuit. Detected signals of the two film differential pressure sensors are connected in the conversion interface circuit of the data processing unit. Under the condition that the system pressure is not changed, the data processing unit automatically collects measurement parameters and operates data processing, the external display unit displays, and therefore the test process is convenient and fast, test accuracy is greatly improved, and convenience in use is improved.
Description
Technical field
The utility model relates to a kind of instrument that is used to test low-pressure fluid system flow resistance, especially the tester of the dynamic flow resistance of each parts in the on-line measurement low pressure fuel system.
Background technology
Present known flow resistance testing tool need be installed in differential pressure pick-up in the oil circuit, the fluid differential pressure pick-up of flowing through, again by signal sampling and processing module, test data is carried out computing, because of its poor anti jamming capability, and sensor accuracy is low, is mainly used in the high-pressure system, has following problem when carrying out low voltage experiment:
1, pressure changes that to cause the curtage signal to change amplitude less, after handling through amplifier, occurs distortion easily, or disturbed signal floods, and can not satisfy Testing requirement;
2, because differential pressure pickup adopts foil gauge more, the material property temperature influence is bigger.Usually can only detect at normal temperatures, could guarantee the accuracy of data;
When 3, installing, tend to change the system fluid path, can produce certain influence system pressure owing to differential pressure pickup.
Summary of the invention
The utility model is for avoiding above-mentioned existing in prior technology problem, a kind of measuring accuracy height, easy to use is provided, can carrying out the differential pressure type flow resistance tester of on-line measurement.
The utility model technical solution problem adopts following technical scheme:
The design feature of the utility model differential pressure type flow resistance tester is: adopt two film differential pressure pickups, described two film differential pressure pickups are gathered the pipeline pressure of measuring point A and measuring point B in the pipeline respectively by thieff hatch; The data processing unit that setting is made of central processing unit, data memory, memory under program and conversion interface circuit, and external display unit and key-press input unit are set, the detection signal of described two film differential pressure pickups inserts the conversion interface circuit in data processing unit.
The design feature of the utility model differential pressure type flow resistance tester also is:
One pipeline pedestal is set, on described pipeline pedestal, multifunctional pipe connection is set, in the described multifunctional pipe connection, two free flow couplings insert the thieff hatch of each film differential pressure pickup, cross-over connection one school zero to cut-off valve between the thieff hatch of two film differential pressure pickups respectively by the pipeline stop valve in the output channel separately.
Described two film differential pressure pickups and data processing unit are co-located in the metallic shield housing.
Compared with the prior art, the utility model beneficial effect is embodied in:
The utility model is under the situation that does not change system pressure, automatically gathering the measurement parameter line data of going forward side by side with data processing unit handles, show by external display unit, test process is convenient and swift, greatly improved measuring accuracy, and improved the comfort level of its use, be particularly suited for on-line measurement.
Description of drawings
Fig. 1 is the utility model tester theory diagram;
Fig. 2 is the utility model tester structural representation.
Number in the figure: 1 free flow coupling; 2 pipeline stop valves; 3 pipeline pedestals; 4 film differential pressure pickups; 5 metallic shield housings; 6 display screens, 7 buttons, 8 standard pressure annular seal spaces.
Embodiment
Referring to Fig. 1, Fig. 2, present embodiment adopts two film differential pressure pickups 4, two film differential pressure pickups 4 are respectively sensors A and sensor B, sensors A and sensor B gather pipeline pressure PA and the PB of measuring point A and measuring point B in the pipeline respectively by thieff hatch separately, measuring point A and measuring point B are the starting point and the terminal point of a certain section pipeline, owing to adopt differential pressure pickup, do not form for the pressure of measuring point A in the pipeline and measuring point B and to interact, can not change the original duty of low pressure fuel system.
The data processing unit that setting is made of central processing unit, data memory, memory under program and conversion interface circuit, and external display unit and key-press input unit are set, the detection signal of film differential pressure pickup 4 inserts the conversion interface circuit in data processing unit; External display unit is the demonstration of being made related data by the display driver circuit driving display; Key-press input unit is the input of being carried out function setting and given signal by button by keystroke interface;
For fear of interference, and make the tester one-piece construction compact more, in the present embodiment film differential pressure pickup 4 and data processing unit are co-located in the metallic shield housing 5.
Referring to Fig. 2, in concrete the enforcement, one pipeline pedestal 3 is set, on pipeline pedestal 3, multifunctional pipe connection is set, in the multifunctional pipe connection, two free flow couplings 1 insert the thieff hatch of film differential pressure pickups 4, cross-over connection one school zero to cut-off valve K3 between the thieff hatch of two film differential pressure pickups 4 respectively by the pipeline stop valve 2 in the output channel separately.Specifically as shown in Figure 2, two free flow couplings 1 are respectively left road free flow coupling and right wing free flow coupling, pipeline stop valve 2 comprises that left road pipeline stop valve K1 and right wing pipeline carry only valve K2, film differential pressure pickup 4 is respectively the differential sensors A of film of measuring point A and the differential sensor B of film of measuring point B, in order to improve measuring accuracy, can select high resolving power film differential pressure pickup for use, as the sputtered thin film pressure transducer of Britain Senstronics company, the pressurized seal that sets up standard chamber 8.
Working method:
1, closes left road pipeline stop valve K1 and right wing pipeline respectively and carry only valve K2, open school zero to cut-off valve K3, by button school zero power energy being set, is benchmark with the standard pressure annular seal space, and the film differential pressure pickup A of measuring point A and the film differential pressure pickup B of measuring point B are carried out school zero;
2, after finishing school zero, open left road pipeline stop valve K1 and right wing pipeline simultaneously and carry only valve K2, close school zero to cut-off valve K3, measure the pressure reduction of left road pipeline and right wing pipeline;
3, open left road pipeline stop valve K1, close the right wing pipeline and carry only valve K2 and school zero to cut-off valve K3, the absolute pressure of testing left road pipeline;
3, open right wing pipeline stop valve K2, close left road pipeline and carry only valve K1 and school zero to cut-off valve K3, the absolute pressure of test right wing pipeline.
Claims (3)
1. a differential pressure type flow resistance tester is characterized in that adopting two film differential pressure pickups (4), and described two film differential pressure pickups (4) are gathered the pipeline pressure of measuring point A and measuring point B in the pipeline respectively by thieff hatch; The data processing unit that setting is made of central processing unit, data memory, memory under program and conversion interface circuit, and external display unit and key-press input unit are set, the detection signal of described two film differential pressure pickups (4) inserts the conversion interface circuit in data processing unit.
2. differential pressure type flow resistance tester according to claim 1, it is characterized in that being provided with a pipeline pedestal (3), on described pipeline pedestal (3), multifunctional pipe connection is set, in the described multifunctional pipe connection, two free flow couplings (1) insert the thieff hatch of each film differential pressure pickup (4), cross-over connection one school zero to cut-off valve between the thieff hatch of two film differential pressure pickups (4) respectively by the pipeline stop valve (2) in the output channel separately.
3. differential pressure type flow resistance tester according to claim 1 is characterized in that described two film differential pressure pickups (4) and data processing unit are co-located in the metallic shield housing (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200536129U CN202013316U (en) | 2011-03-03 | 2011-03-03 | Differential pressure type flow resistance tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200536129U CN202013316U (en) | 2011-03-03 | 2011-03-03 | Differential pressure type flow resistance tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202013316U true CN202013316U (en) | 2011-10-19 |
Family
ID=44783933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200536129U Expired - Lifetime CN202013316U (en) | 2011-03-03 | 2011-03-03 | Differential pressure type flow resistance tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202013316U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674479A (en) * | 2013-12-18 | 2014-03-26 | 哈尔滨工程大学 | Non-smooth surface fluid friction resistance testing device and testing method |
| CN103674535A (en) * | 2013-12-12 | 2014-03-26 | 中国航空工业集团公司第六三一研究所 | Method for quickly detecting flow resistance characteristic of liquid cooling quick coupling |
| CN104748940A (en) * | 2015-03-06 | 2015-07-01 | 广西华原过滤系统股份有限公司 | Portable online flow resistance tester |
| CN105334137A (en) * | 2015-11-23 | 2016-02-17 | 宜昌丰润生物科技有限公司 | Online heparin sodium viscosity detecting device and method |
| CN111272384A (en) * | 2020-02-21 | 2020-06-12 | 安徽皖仪科技股份有限公司 | Detection method and device for detecting flow resistance by pressure drop contrast |
-
2011
- 2011-03-03 CN CN2011200536129U patent/CN202013316U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674535A (en) * | 2013-12-12 | 2014-03-26 | 中国航空工业集团公司第六三一研究所 | Method for quickly detecting flow resistance characteristic of liquid cooling quick coupling |
| CN103674535B (en) * | 2013-12-12 | 2016-04-20 | 中国航空工业集团公司第六三一研究所 | Liquid cooling rapid-acting coupling flow resistance characteristic method for quick |
| CN103674479A (en) * | 2013-12-18 | 2014-03-26 | 哈尔滨工程大学 | Non-smooth surface fluid friction resistance testing device and testing method |
| CN103674479B (en) * | 2013-12-18 | 2016-05-04 | 哈尔滨工程大学 | Non-smooth surface fluid friction resistance measurement device and method of testing |
| CN104748940A (en) * | 2015-03-06 | 2015-07-01 | 广西华原过滤系统股份有限公司 | Portable online flow resistance tester |
| CN105334137A (en) * | 2015-11-23 | 2016-02-17 | 宜昌丰润生物科技有限公司 | Online heparin sodium viscosity detecting device and method |
| CN105334137B (en) * | 2015-11-23 | 2018-02-02 | 宜昌丰润生物科技有限公司 | A kind of online viscosity detecting device of liquaemin and detection method |
| CN111272384A (en) * | 2020-02-21 | 2020-06-12 | 安徽皖仪科技股份有限公司 | Detection method and device for detecting flow resistance by pressure drop contrast |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202013316U (en) | Differential pressure type flow resistance tester | |
| CN203719811U (en) | Weak voltage signal detection device of micro-voltage sensor | |
| WO2011022132A3 (en) | System and method for detecting leaks | |
| EP2986961A1 (en) | Pressure sensor | |
| CN103091175B (en) | Outside-test hydraulic pressure test method | |
| CN101737377A (en) | Online fault detector of hydraulic system | |
| CN105627106B (en) | A kind of infrasound sensor of gas pipeline leak detection | |
| CN201615815U (en) | Pressure non-disassembly detection device for hydraulic rubber oil tube | |
| CN104748809A (en) | Intelligent metering instrument based on pressure regulator and metering method | |
| US11473994B2 (en) | Portable tester for a leakage rate of a cylinder in an automobile engine | |
| CN204346632U (en) | A kind of differential pressure pickup adopting composite bridge road | |
| CN204228369U (en) | A kind of calibrating installation of vibration table | |
| CN103076049A (en) | Pressure difference type optical fiber flow meter | |
| CN201583289U (en) | Dynamic throttle flowmeter with middle through hole | |
| CN103162893A (en) | Multi-component smart pressure transmitter | |
| CN102865895A (en) | Venturi flow sensor | |
| CN201811817U (en) | Pressure gauge | |
| CN203310453U (en) | Multifunctional flow measuring instrument | |
| CN201060079Y (en) | Intelligent differential pressure cell | |
| CN201600218U (en) | Post-type pressure difference transmitter | |
| CN104515485A (en) | Novel pressure type pneumatic sensor | |
| CN204085583U (en) | Portable orifice-plate measuring instrument | |
| CN102445243B (en) | Flow-measuring device with flow stabilizing function | |
| CN202814461U (en) | Integrated static pressure and differential pressure detection device | |
| CN201811771U (en) | Calibration device for flow sensor of loader hydraulic system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HEFEI WAL FUEL SYSTEM CO., LTD. Free format text: FORMER NAME: WAL FUEL SYETEMS (HEFEI) LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 230601 No. 59 Buddha Road, Hefei Economic Development Zone, Anhui, China Patentee after: Hefei Weir oil-fired system limited company Address before: 230601 No. 59 Buddha Road, Hefei Economic Development Zone, Anhui, China Patentee before: WAL Fuel Syetems (Hefei) Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 230000 No. 59 Buddha Road, Hefei economic and Technological Development Zone, Anhui Patentee after: Anhui Weil Low Carbon Technology Co., Ltd Address before: 230601 No. 59 Buddha Road, Hefei Economic Development Zone, Anhui, China Patentee before: Hefei Weir oil-fired system limited company |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111019 |