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CN-122016014-A - Flowmeter oil supply test system

CN122016014ACN 122016014 ACN122016014 ACN 122016014ACN-122016014-A

Abstract

The invention relates to the technical field of instruments and meters, in particular to a flowmeter oil supply test system, which comprises a circulating heat conduction piece, a fuel oil piece and a flow measurement test piece, wherein the circulating heat conduction piece comprises a cold heat machine, an inner heat exchange piece and an outer heat exchange piece, the inner heat exchange piece and the outer heat exchange piece are connected in parallel and communicated with each other on the cold heat machine, the fuel oil piece comprises an oil supply piece, a flow measurement test piece, a pressure stabilizing piece and an oil return piece, the fuel oil supply piece is arranged outside the inner heat exchange piece, so that fuel oil in the fuel oil piece can be in heat transfer with the inner heat exchange piece, the flow measurement test piece is connected with the oil supply piece in a communicated manner through the outer heat exchange piece, the fuel oil to be tested is used for carrying out an oil supply test by using fuel oil with a preset temperature, the pressure stabilizing piece is connected with the flow measurement test piece in a communicated manner, and the oil return piece is respectively connected with the pressure stabilizing piece and the fuel oil supply piece in a communicated manner during the test process, so that the fuel oil can flow back to the fuel oil supply piece. The invention can obviously improve the test coverage and the authenticity, has high test precision, optimizes the system structure and the reliability, and obviously improves the safety and the environmental protection performance in the test process.

Inventors

  • Zan hao
  • YAN LIANG
  • HUANG FUJI
  • Zhou Shenmei
  • LIU JIABAO

Assignees

  • 江苏空天测控科技有限公司

Dates

Publication Date
20260512
Application Date
20260213

Claims (10)

  1. 1. A flowmeter oil supply test system, comprising: the circulating heat conduction piece comprises a heat cooler, an inner heat exchange piece and an outer heat exchange piece, wherein the inner heat exchange piece and the outer heat exchange piece are connected in parallel and communicated with the heat cooler; The fuel piece, it with circulation heat conduction spare is connected, the fuel piece includes oil feed piece, flow measurement test piece, steady voltage spare and return oil spare, the oil feed piece sets up outside the interior heat transfer spare, make the fuel in the oil feed piece can with interior heat transfer spare heat transfer, the flow measurement test piece passes through outer heat transfer piece with the oil feed piece link up to use the fuel of predetermined temperature to carry out the fuel feeding test to the turbine flowmeter of test, steady voltage spare with the flow measurement test piece link up to be connected, with the fuel pressure of stabilizing test in-process, return oil spare respectively with steady voltage spare with the oil feed piece link up to be connected, with the fuel backward flow extremely the oil feed piece.
  2. 2. The flowmeter oil supply test system according to claim 1, wherein said outer heat exchange member comprises a first pipe, a first switching valve and an outer heat exchanger, one end of said first pipe is connected to said cold and hot machine outlet, the other end is connected to said cold and hot machine inlet, said first switching valve and said outer heat exchanger are all installed on said first pipe, said inner heat exchange member comprises a second pipe, a second switching valve and an inner heat exchanger, one end of said second pipe is connected to said cold and hot machine outlet, the other end is connected to said cold and hot machine inlet, said second switching valve and said inner heat exchanger are all installed on said second pipe, and said second pipe is connected in parallel with said first pipe.
  3. 3. The flowmeter oil supply test system according to claim 2, wherein the oil supply part comprises an oil tank, an oil supply power part and a heating circulation part, the oil tank is internally provided with the inner heat exchanger, the oil supply power part is in through connection with the oil tank, the heating circulation part is in through connection with the oil supply power part and the oil tank respectively, the oil supply power part comprises a third pipeline, a first filter, a third switching valve and an oil pump, one end of the third pipeline is in through connection with the oil tank, the first filter, the third switching valve and the oil pump are all arranged on the third pipeline in a through manner, the heating circulation part comprises a fourth pipeline and a fourth switching valve, one end of the fourth pipeline is in through connection with the other end of the third pipeline, the other end of the fourth pipeline is in through connection with the bottom surface of the oil tank, and the fourth switching valve is arranged on the fourth pipeline.
  4. 4. The flowmeter fuel delivery testing system of claim 3, wherein said flow measurement test piece comprises a fuel inlet member, a first standard flow member and a test flow member, said fuel inlet member being in communication with said fuel delivery power member for receiving said fuel delivered by said fuel pump, said first standard flow member being in communication with said fuel inlet member, said test flow member being in communication with said first standard flow member for testing said turbine flowmeter.
  5. 5. The flowmeter oil supply test system as set forth in claim 4 wherein the oil inlet member includes a fifth pipe, a fifth switching valve, a sixth pipe and a sixth switching valve, one end of the fifth pipe being connected through the other end of the third pipe and the fifth pipe being connected in series with the external heat exchanger, the fifth switching valve being mounted on the fifth pipe, one end of the sixth pipe being connected through the other end of the third pipe, the sixth pipe being connected in parallel with the fifth pipe, the sixth switching valve being mounted on the sixth pipe, the first standard flow member includes a seventh pipe, a first temperature sensor, a first pressure sensor, an eighth pipe, a seventh switching valve, a first standard flow meter, a ninth pipe and an eighth switching valve, one end of the seventh pipe being connected through the other ends of the fifth pipe and the sixth pipe simultaneously, the first temperature sensor and the first pressure sensor being mounted on the seventh pipe, the other ends of the seventh pipe being connected through the seventh pipe and the eighth pipe, the seventh switching valve being mounted on the eighth pipe, the eighth pipe being connected through the other ends of the seventh pipe and the eighth pipe, the eighth pipe being mounted on the eighth standard flow meter, and the eighth pipe being connected through the other ends of the eighth pipe.
  6. 6. The flowmeter oil supply test system according to claim 5, wherein the test flow member includes a tenth pipe, a ninth switching valve, a turbine flowmeter, an eleventh pipe, a tenth switching valve, a second temperature sensor, and a second pressure sensor, one end of the tenth pipe is simultaneously connected to the eighth pipe and the other end of the ninth pipe in a through-connection manner, the ninth switching valve and the turbine flowmeter are both provided on the tenth pipe, one end of the eleventh pipe is simultaneously connected to the eighth pipe and the other end of the ninth pipe in a through-connection manner, the tenth switching valve, the second temperature sensor, and the second pressure sensor are all provided on the eleventh pipe, and the pressure stabilizing member includes a back pressure tank, a twelfth pipe, an eleventh switching valve, and a nitrogen cylinder, the back pressure tank is connected to the tenth pipe and the other end of the eleventh pipe in a through-connection manner, one end of the twelfth pipe is connected to the back pressure tank in a through-connection manner, the other end of the twelfth pipe is connected to the nitrogen cylinder in a through-connection manner, and the eleventh switching valve is provided on the twelfth pipe.
  7. 7. The flowmeter oil supply test system according to claim 6, wherein the oil return member includes a thirteenth pipe, a twelfth switching valve, a fourteenth pipe, a first precise needle valve, a fifteenth pipe, a second precise needle valve, a sixteenth pipe, a second filter, a thirteenth switching valve, and a fourteenth switching valve, one end of the thirteenth pipe is connected to the bottom surface of the back pressure tank, the twelfth switching valve is provided to the thirteenth pipe so as to extend laterally therethrough, one end of the fourteenth pipe is connected to the other end of the thirteenth pipe so as to extend therethrough, the first precise needle valve is provided to the tenth pipe so as to extend therethrough, one end of the fifteenth pipe is connected to the other end of the thirteenth pipe so as to extend therethrough, the second precise needle valve is provided to the fifteenth pipe so as to extend therethrough, one end of the sixteenth pipe is connected to both the fourteenth pipe and the other end of the fifteenth pipe so as to extend therethrough, the second filter is provided to extend therethrough, the thirteenth switching valve is provided to extend laterally therethrough, and the fourteenth switching valve is provided to extend therethrough.
  8. 8. The flowmeter oil supply test system of claim 7, wherein the test method in a low flow, low temperature differential test scenario comprises the steps of: s1, debugging measuring signals of temperature, pressure and a first standard flowmeter, correctly displaying readings, opening the first switch valve, closing the second switch valve, opening the cold and hot machine for preheating, and setting the cold and hot machine; S2, opening the third switching valve and the fourteenth switching valve, and ensuring that the sixth switching valve, the seventh switching valve and the tenth switching valve are opened and ensuring that the eighth switching valve, the ninth switching valve, the twelfth switching valve and the thirteenth switching valve are closed; s3, opening the eleventh switching valve, pre-inflating the back pressure tank according to the turbine flowmeter calibration pressure, and closing the first precise needle valve and the second precise needle valve at the moment; s4, the pressure is lower than the pressure tested by the turbine flowmeter, the oil pump is opened after the pressure is stable, and the pipeline system and the back pressure tank are filled with liquid; S5, debugging the first precise needle valve and the second precise needle valve until the readings of the second temperature sensor, the second pressure sensor and the first standard flowmeter meet the test working condition of the turbine flowmeter at the same time, and recording the readings of the second temperature sensor, the second pressure sensor and the first standard flowmeter; S6, when the stable working condition of the test is met and exceeds 5 minutes, opening the ninth switching valve and closing the tenth switching valve, if the indication changes of the first temperature sensor, the first pressure sensor and the first standard flowmeter are large, fine-tuning the first precise needle valve, the second precise needle valve and the cold and hot machine, and if the indication changes are small or not, meeting the requirement of the test working condition, and then starting the test of the turbine flowmeter; S7, in the long-time test process, if the temperature, the pressure and the flow deviate, the first precise needle valve, the second precise needle valve and the cold and hot machine need to be finely adjusted in real time, so that the working conditions specified by the test are met; And S8, after the test is finished, the cold and hot machine and the oil pump are required to be turned off in sequence, and when the pressure of the back pressure tank is close to the atmospheric pressure, residual oil in the pipeline is blown off by using nitrogen, and the fourteenth switching valve and the third switching valve are closed.
  9. 9. The flowmeter oil supply test system of claim 7, wherein the test method in a high flow, high temperature differential test scenario comprises the steps of: S1, debugging measuring signals of temperature, pressure and a first standard flowmeter, correctly displaying readings, and fully opening the first switch valve and the second switch valve; S2, preheating fuel in the fuel tank, opening the third switch valve, closing the fifth switch valve and the sixth switch valve, and opening the oil pump to enable the fuel to circulate in the fuel tank until the temperature rises to a preset temperature; S3, opening the seventh switch valve, pre-inflating the back pressure tank according to the turbine flowmeter calibration pressure, and closing the first precise needle valve and the second precise needle valve at the moment; s4, after the pressure is stable, opening the fifth switch valve and the oil pump, and filling liquid into the pipeline system and the back pressure tank, wherein the liquid level is at least higher than the outlet of the back pressure tank; S5, debugging the first precise needle valve and the second precise needle valve until the readings of the second temperature sensor, the second pressure sensor and the first standard flowmeter meet the test working condition of the turbine flowmeter at the same time, and recording the readings of the first temperature sensor, the first pressure sensor and the first standard flowmeter; S6, when the stable working condition of the test is met and exceeds 5 minutes, opening the ninth switching valve and closing the tenth switching valve, fine-adjusting the first precise needle valve, the second precise needle valve and the cooling and heating machine if the indication changes of the first temperature sensor, the first pressure sensor and the flowmeter are large, and starting the test on the turbine flowmeter if the indication changes are small or not; S7, if the temperature, the pressure and the flow deviate in the long-time test process, the first precise needle valve, the second precise needle valve and the cold and hot machine need to be finely adjusted in real time, so that the working conditions specified in the test are met; And S8, after the test is finished, the cold and hot machine and the oil pump are required to be turned off in sequence, and when the pressure of the back pressure tank is close to the atmospheric pressure, residual oil in the pipeline is blown off by using nitrogen, and the fourteenth switching valve and the third switching valve are closed.
  10. 10. The flowmeter oil supply test system as set forth in claim 4 wherein said oil intake member includes a seventeenth pipe and a fifteenth switching valve, said seventeenth pipe having one end connected through to the other end of said third pipe and said seventeenth pipe being connected in series to said external heat exchanger, said fifteenth switching valve being mounted on said seventeenth pipe, said first standard flow member includes an eighteenth pipe, a second standard flow meter, a third temperature sensor and a third pressure sensor, said eighteenth pipe having one end connected through to the other end of said seventeenth pipe, said second standard flow meter, said third temperature sensor and said third pressure sensor being provided on said eighteenth pipe, said test flow member includes a nineteenth pipe having one end connected through to the other end of said eighteenth pipe for testing said test turbine flowmeter, said oil return member includes a twenty-first pipe, a sixteenth switching valve, a first twenty-first pipe, a third precision needle valve, a twenty-second pipe, a fourth precision needle valve, a third needle valve and a third pressure sensor being provided on said twenty-first end of said twenty-eighth pipe, said test flow member includes a nineteenth pipe having one end connected through to said first end of said twenty-eighth pipe, said back pressure valve being provided on said twenty-ninth pipe and said twenty-second pressure sensor, said back pressure sensor is provided on said other end of said twenty-eighth pipe, the other end of the twenty-third pipeline is in through connection with the oil tank, the third filter is arranged on the twenty-third pipeline, and one end of the seventeenth switching valve is in through connection with the oil tank; the flowmeter oil supply test system has corresponding use methods in a small-flow and low-temperature difference test scene and a large-flow and high-temperature difference test scene.

Description

Flowmeter oil supply test system Technical Field The invention relates to the field of testing and measuring instruments, in particular to a flowmeter oil supply test system. Background The flow meter is used as a core measuring component in the oil supply system, and the metering precision, stability and reliability of the flow meter are directly related to the fuel oil supply efficiency, equipment operation safety and energy consumption control level. In the fields of aerospace, ship power, generator sets, precision industrial combustion systems and the like, the method has important engineering significance in measuring and adjusting the fuel oil flow with high precision and high dynamic response. In order to ensure that the performance of the flowmeter in practical application meets the design requirements, strict testing and calibration must be performed by an oil supply test system simulating the real working condition before the flowmeter is installed. At present, the common flowmeter testing method is mostly carried out under laboratory conditions by adopting a standard meter method or a mass time method. However, existing oil supply test systems typically have the following limitations: 1. The working condition simulation capability is limited, and a plurality of test systems can only test under single flow, pressure and temperature parameters, so that complex dynamic working conditions existing in an actual oil supply system, such as flow rapid step, pressure pulsation and oil temperature transient test requirements, are difficult to reproduce. This results in inadequate performance assessment of the flowmeter in terms of dynamics, environmental compliance. 2. The system integration level and the automation degree are low, the traditional test bed is often formed by assembling a dispersed pump, an oil storage tank, a heater, a pressure regulating valve and a data acquisition instrument, a system pipeline is complex, the occupied space is large, and the coordination control of each unit is difficult. 3. The accuracy of calibration and the integrity of the traceable chain are insufficient, namely, the accuracy of the pressure and temperature sensors adopted by part of the system and the standard flowmeter used as a reference is limited, or an effective and convenient traceable chain is not established with the national metering standard of higher grade. In addition, the unreasonable design of the system pipeline can generate vortex, bubble or slug flow to influence the stability of the flow field, thereby introducing additional measurement uncertainty and reducing calibration reliability. 4. The fuel oil test involves inflammable media, and some existing systems are not designed enough in the aspects of leakage monitoring, overflow protection, electrical explosion prevention, waste gas (oil mist) treatment and the like, so that potential safety hazards exist. Meanwhile, the fuel oil circulation and purification functions of the system are imperfect, oil product degradation is easy to cause, the test cost is increased, and the system does not accord with the green and environment-friendly test concept. Therefore, there is a need to develop a flowmeter oil supply test system with high integration level, good automation degree, wide working condition coverage range, high calibration precision, safety and environmental protection. The system can provide a full-period and high-confidence performance test platform for the turbine flowmeter from research and development verification, factory verification to period calibration so as to overcome the defects of the prior art and meet the increasingly-improved industrial test requirements. Disclosure of Invention In order to solve the technical problems in the prior art, the embodiment of the invention provides a flowmeter oil supply test system. The technical scheme is as follows: A flowmeter oil supply test system comprising: the circulating heat conduction piece comprises a heat cooler, an inner heat exchange piece and an outer heat exchange piece, wherein the inner heat exchange piece and the outer heat exchange piece are connected in parallel and communicated with the heat cooler; The fuel piece, it with circulation heat conduction spare is connected, the fuel piece includes oil feed piece, flow measurement test piece, steady voltage spare and return oil spare, the oil feed piece sets up outside the interior heat transfer spare, make the fuel in the oil feed piece can with interior heat transfer spare heat transfer, the flow measurement test piece passes through outer heat transfer piece with the oil feed piece link up to use the fuel of predetermined temperature to carry out the fuel feeding test to the turbine flowmeter of test, steady voltage spare with the flow measurement test piece link up to be connected, with the fuel pressure of stabilizing test in-process, return oil spare respectively with steady voltage spare with the oil feed piece link up to