CN105241528A - Flow sensor detection platform and control method thereof - Google Patents

Flow sensor detection platform and control method thereof Download PDF

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Publication number
CN105241528A
CN105241528A CN201510612010.5A CN201510612010A CN105241528A CN 105241528 A CN105241528 A CN 105241528A CN 201510612010 A CN201510612010 A CN 201510612010A CN 105241528 A CN105241528 A CN 105241528A
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China
Prior art keywords
tube row
water
flow sensor
arm
flow
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CN201510612010.5A
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CN105241528B (en
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毕智伟
黄波
田海平
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State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Hunan Electric Power Co Ltd
State Grid Hunan Electric Power Co Ltd
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State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Hunan Electric Power Co Ltd
State Grid Hunan Electric Power Co Ltd
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Priority to CN201510612010.5A priority Critical patent/CN105241528B/en
Publication of CN105241528A publication Critical patent/CN105241528A/en
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Publication of CN105241528B publication Critical patent/CN105241528B/en
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Abstract

The invention provides a flow sensor detection platform and a control method thereof. The detection platform comprises a fluid circulating system, a flow control system, and a test analysis system. The fluid circulating system comprises a water tank, a water pump, a motor, and a water conveying pipeline. The water conveying pipeline comprises a water main, a return main, and test tube rows. The test tube rows are provided with ultrasonic flowmeters, and are provided with connecting holes of to-be-measured flow sensors, and flange interfaces. The flow control system comprises a local control unit and a remote control unit. The remote control unit communicates with the local control unit, and the remote control unit is used to control constant-voltage current supply of a motor. The test analysis system comprises a multi-channel signal acquisition instrument and a signal analyzer. The multi-channel signal acquisition instrument acquires flow signals of the test tube rows through the ultrasonic flowmeters. The signal analyzer compares the output signals of the to-be-measured flow sensors with the flow signals of the test tube rows, and outputs a detection result. The flow sensor detection platform is simple in operation, convenient in control, low in cost, and accurate in measurement.

Description

A kind of flow sensor detection platform and control method thereof
Technical field
The present invention relates to a kind of pick-up unit, especially a kind ofly carry out the flow sensor detection platform of testing and control method thereof for flow sensor.
Background technology
Flow sensor is generally used for the flow measuring medium fluid in industrial pipeline, and what be nowadays used for measuring flow all uses sensor substantially.Sensor is experienced fluid flow and is converted usable output signal to, loads onto sensor and operation can be made more simple and convenient.In a lot of economic field, it is important that the Measurement accuracy of flow has become very.
Due to the difference of the factors such as detected fluid character, velocity flow profile situation, pipeline infield and accuracy of measurement requirement, applicable flow sensor type is also not quite similar.Can different sensors meet need of production before being taken into use, along with the increase of active time, sensor is constantly subject to the effect of the many factors such as erosion, fatigue, and whether the performance of sensor declines to some extent, and these are all related to safety in production and the economic benefit of enterprise.For Hydropower Unit, technical water supply system comprises the effect of the cooling of operational outfit, the working seal of the hydraulic turbine and lubrication, and flow sensor, for measuring, monitoring the relevant devices of water system, ensures the normal operation of system; For in the state evaluation of unit performance, the many employings of China characterize the stable sexual state of Hydropower Unit according to the key point vibration of unit parts and the situation of pressure pulsation, and the technical feature of flow sensor just seems particularly important.
Therefore be necessary to relate to a kind of can the flow sensor detection platform of test traffic sensor performance and control method thereof easily.
Summary of the invention
Technical matters solved by the invention is, for the deficiencies in the prior art, provides a kind of flow sensor detection platform and control method thereof, simple to operate, and it is convenient to control, and cost is low, measures accurately.
For achieving the above object, technical scheme provided by the invention is:
A kind of flow sensor detection platform, comprises fluid circulating system 3, flow control system 2 and detecting and analysing system 4;
Described fluid circulating system 3 comprises water tank 1, water pump 10, motor 28 and hydraulic pipeline 35; Described hydraulic pipeline 35 comprises water main 7, return main 17 and developmental tube row 29; The water return outlet of the feed water inlet of described water tank 1, water main 7, water pump 10, developmental tube row 29, return main 17 and water tank 1 is connected to form closed-loop path successively; Described motor 28 is for driving water pump 10;
Described water main 7 and developmental tube row 29 are equipped with pressure transducer;
Water-level gauge 23 is provided with in described water tank 1;
Described developmental tube row 29 is provided with ultrasonic flow meter 24, and has connecting hole and the flange-interface 44 of flow sensor 42 to be measured; During detection, flow sensor 42 to be measured is arranged on developmental tube row 29 by connecting hole or flange-interface 44;
Described flow control system 2 comprises local control unit 5 and remote control unit 6; Described remote control unit 6 is connected with local control unit 5 communication; Described local control unit 5 comprises PLC control cabinet 36 and frequency-conversion control cabinet 30; Described PLC control cabinet 36 is connected with frequency-conversion control cabinet 30 communication; Pressure transducer on described water main 7 and developmental tube row 29, and the signal output part of water-level gauge 23 in water tank 1 is all connected with the signal input part of PLC control cabinet 36; The output terminal of described frequency-conversion control cabinet 30 is connected with the control end of motor 28; Described PLC control cabinet 36 gathers water main 7 and developmental tube the row pressure signal of 29, the liquid level signal of water tank 1, and the pressure signal of water main 7 and developmental tube row 29 is sent to frequency-conversion control cabinet 30, frequency-conversion control cabinet 30 carries out PID arithmetic according to pressure signal, regulate the rotating speed of motor 28, control motor 28 constant voltage for stream;
The various control patterns such as flow control system 2 according to the present invention has existingly, long-range, two places." now " refers to that the start and stop of motor and water pump can only at the enterprising line operate of local control unit 5; " long-range " refers to that the start and stop of platform can only operate on remote control unit 6; " two places " refer to that the start and stop of platform can operate on local control unit 5 and remote control unit 6 simultaneously.
Described detecting and analysing system 4 comprises multi-channel signal acquiring instrument 26 and signal analyzer 27; Described ultrasonic flow meter 24 is all connected with the signal input part of multi-channel signal acquiring instrument 26 with the signal output part of flow sensor 42 to be measured; The signal output part of described multi-channel signal acquiring instrument 26 is connected with the signal input part of signal analyzer 27; Described signal analyzer 27 for comparing the signal magnitude of ultrasonic flow meter 24 and flow sensor to be measured 42 output, and exports comparative result; Described multi-channel signal acquiring instrument 26 is for arranging 29 flow signals by ultrasonic flow meter 24 acquisition test pipe, and described signal analyzer 27 also has generation examining report function automatically.
Preferably, described water tank 1 comprises tank 33, tank cover plate 22, the rinforcement bar 37 being located at tank 33 surrounding, tank inlet pipe 31, tank drains pipe 25 and steady flow baffle 34;
Described tank cover plate 22 covers above tank 33, adopts the cover plate that sliding open type can be dismantled;
Described steady flow baffle 34 vertically inserts tank, tank is divided into two cell bodies; Side cell body is provided with feed water inlet, and for connecting the entrance of water main 7, opposite side cell body is provided with water return outlet, for connecting the outlet of return main 17;
Steady flow baffle lower end has limbers 38.
Preferably, valve body 21 is installed in the position on described water main 7 between water tank 1 and water pump 10;
Described return main 17 is closing on water tank 1 place installation valve body 20.
Preferably, described developmental tube row 29 comprises horizontal tube row 11 and VERTICAL TUBE row 12;
Described horizontal tube row 11 comprises horizontal tube row feed pipe 8, horizontal tube flows back to water pipe 13 and multiple horizontal tube row arm 15; The entrance of horizontal tube row feed pipe 8 is connected with the outlet of water main 7; The outlet that the entrance of multiple horizontal tube row arm 15 all arranges feed pipe 8 with horizontal tube is connected; The outlet of multiple horizontal tube row arm 15 all flows back to water pipe 13 entrance with horizontal tube is connected; The outlet that horizontal tube flows back to water pipe 13 is connected with the entrance of return main 17;
Described VERTICAL TUBE row 12 comprises VERTICAL TUBE row feed pipe 9, VERTICAL TUBE flows back to water pipe 14 and multiple VERTICAL TUBE row arm 16; The outlet that the entrance of VERTICAL TUBE row feed pipe 9 is connected with water main 7 is connected; The outlet that the entrance of multiple VERTICAL TUBE row arm 16 all arranges feed pipe 9 with VERTICAL TUBE is connected; The outlet of multiple VERTICAL TUBE row arm 16 all flows back to water pipe 14 entrance with VERTICAL TUBE is connected; The outlet that VERTICAL TUBE flows back to water pipe 14 is connected with the entrance of return main 17;
Described horizontal tube row's feed pipe 8 and VERTICAL TUBE row feed pipe 9 are all provided with valve body 18;
Described multiple horizontal tube row's arms 15 and multiple VERTICAL TUBE row arm 16 are equipped with ultrasonic flow meter 24, and have connecting hole and the flange-interface 44 of flow sensor 42 to be measured; During detection, multiple flow sensor 42 to be measured is arranged on multiple horizontal tube row's arm 15 or multiple VERTICAL TUBE row arm 16 respectively by connecting hole or flange-interface 44 according to its installation direction in engineering reality (level/vertical).
Preferably, described horizontal tube row arm 15 is arranged feed pipe 8 by corrugated tube and horizontal tube and is connected; Described horizontal tube row arm 15 comprise horizontal segment and the end of shape bending structure obliquely, the end of described horizontal tube row arm 15 adopts shape bending structure connection obliquely horizontal tube flows back to water pipe 13; The end of described multiple horizontal tube row arm 15 and horizontal tube flow back between water pipe 13 and are all provided with valve body 19;
The horizontal segment of described multiple horizontal tube row arm 15 is equipped with ultrasonic flow meter 24, and has connecting hole or the flange-interface 44 of flow sensor 42 to be measured; During detection, multiple flow sensor 42 to be measured is arranged on the horizontal segment of multiple horizontal tube row arm 15 respectively by connecting hole and flange-interface 44.
Preferably, VERTICAL TUBE row arm 16 adopts " N " shape to manage or " U " shape pipe, comprises straight length 39 and bridge piece 40; The end of described multiple VERTICAL TUBE row arm 16 and VERTICAL TUBE flow back between water pipe 14 and are all provided with valve body 19;
The straight length 39 of described multiple VERTICAL TUBE row arm 16 is equipped with ultrasonic flow meter 24, and has connecting hole and the flange-interface 44 of flow sensor 42 to be measured; During detection, multiple flow sensor 42 to be measured is arranged on the straight length 39 of multiple VERTICAL TUBE row arm 16 respectively by connecting hole or flange-interface 44;
Described flange-interface 44 is arranged on flow direction straight length upwards; On same VERTICAL TUBE row arm 16, on the straight length 39 adjacent with the straight length 39 having flange-interface 44, the position of flange-interface 44 symmetry is provided with corrugated tube 41.
Preferably, connecting hole and the flange-interface 44 of multiple flow sensor to be measured 42 is all had, for connecting multiple flow sensor to be measured 42 on the horizontal segment of each horizontal tube row arm 15 and on the straight length 39 of each VERTICAL TUBE row arm 16.
Preferably, the peak of described hydraulic pipeline 35 is provided with gas outlet 32, and the minimum point of described hydraulic pipeline 35 is provided with drainpipe 43.
The present invention can be applicable to the test of the flow sensors such as thermally induced flow gauge, current indicator, baffle flowmeter, flow switch, pressure unit.
A control method for flow sensor detection platform, described flow sensor detection platform adopts the flow sensor detection platform described in above-mentioned any one, and its control method is:
A) flow sensor 42 to be measured is arranged on developmental tube row 29 by connecting hole or flange-interface 44;
B) select control model by flow control system 2, control model comprises local control, Long-distance Control, two places control; Local control refers to the start and stop by local control unit 5 operating motor and water pump; Long-distance Control refers to the start and stop by operating motor and water pump on remote control unit 6; Two places control the start and stop of the start and stop referred to by local control unit 5 or remote control unit 6 operating motor and water pump;
During control mode switch, motor and water pump keep original running status;
C) before motor and starting mode of pump, PLC control cabinet 36 arranges the pressure sensor communication on 29 with water-level gauge 23, water main 7 and developmental tube in water tank 1, gathers the pressure signal that the liquid level signal of water tank 1, water main 7 and developmental tube arrange 29; When PLC control cabinet 36 detect the liquid level of water tank 1 exceed preset range or water main 7, developmental tube row 29 pressure signal communication abnormality time, flow control system 2 automatic blocking, forbids motor and starting mode of pump;
D) after motor and starting mode of pump, setting operating pressure value; PLC control cabinet 36 collects the pressure signal of water main 7 and developmental tube row 29, and be sent to frequency-conversion control cabinet 30, frequency-conversion control cabinet 30 carries out PID arithmetic according to pressure signal, regulate the rotating speed of motor 28, fine adjustments is carried out to the pressure of developmental tube row 29, thus reach the operating pressure value of setting, make the pressure equilibrium of hydraulic pipeline 35, ensure that constant voltage is for stream;
E), in operational process, detecting and analysing system 4 gathers the flow signal of ultrasonic flow meter 24 and the flow signal of flow sensor to be measured 42 by multi-channel signal acquiring instrument 26, and carries out communication with signal analyzer 27; Described signal analyzer 27 for comparing the signal magnitude of ultrasonic flow meter 24 and flow sensor to be measured 42 output, and exports comparative result.Signal analyzer 27 according to the analysis data of record, can also generate examining report automatically.
Preferably, flow sensor detection platform is also provided with the alarm module be connected with PLC control cabinet 36, when PLC control cabinet 36 detect the liquid level of water tank 1 exceed preset range or water main 7, developmental tube row 29 pressure signal communication abnormality time, trigger alarm module, produces alerting signal.
Beneficial effect:
1, medium fluid recycles, and economizes on resources.
2, use variable-frequency motor, constant voltage can provide the fluid of different in flow rate.
3, signal analyzer can compare the signal magnitude of ultrasonic flow meter and flow sensor to be measured output, and exports comparative result; And according to the analysis data of record, automatically can generate examining report function, increase work efficiency.
4, install steady flow baffle in water tank, make fluidised form more stable, pump working is more steady.
5, adopt " N " shape or " U " shape VERTICAL TUBE row arm and shape horizontal tube row arm can warranty test pipeline be full water state, ensures that test result is more accurate.
6, the present invention can test for flow sensors such as thermally induced flow gauge, current indicator, baffle flowmeter, flow switch, pressure units, applied widely.
7, the present invention have existingly, the various control pattern such as long-range, two places, simple to operate, it is convenient to control.
Accompanying drawing explanation
Fig. 1 is the structural representation of the flow sensor detection platform of the embodiment of the present invention.
Fig. 2 is the water tank floor map of the embodiment of the present invention.
Fig. 3 is the steady flow baffle schematic diagram of the embodiment of the present invention.
Fig. 4 is the vertical comb arm schematic diagram of the embodiment of the present invention.
Description of reference numerals:
1-water tank, 2-flow control system, 3-fluid circulating system, 4-detecting and analysing system, 5-local control unit, 6-remote control unit, 7-water main, 8-horizontal tube row feed pipe, 9-VERTICAL TUBE row feed pipe, 10-water pump, 11-horizontal tube is arranged, 12-VERTICAL TUBE is arranged, 13-horizontal tube flows back to water pipe, 14-VERTICAL TUBE flows back to water pipe, 15-horizontal tube row arm, 16-VERTICAL TUBE row arm, 17-return main, 18,19,20,21-valve body, 22-tank cover plate, 23-water-level gauge, 24-ultrasonic flow meter, 25-tank drains pipe, 26-multi-channel signal acquiring instrument, 27-signal analyzer, 28-motor, 29-developmental tube is arranged, 30-frequency-conversion control cabinet, 31-tank inlet pipe, 32-gas outlet, 33-tank, 34-steady flow baffle, 35-hydraulic pipeline, 36-PLC control cabinet, 37-rinforcement bar, 38-limbers, 39-straight length, 40-bridge piece, 41-corrugated tube, 42-flow sensor to be measured, 43-drainpipe, 44-flange-interface.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
Below with reference to the accompanying drawings describe according to the present invention.
Embodiment 1:
As shown in Figure 1, a kind of flow sensor detection platform of the present invention, comprises fluid circulating system 3, flow control system 2 and detecting and analysing system 4;
Described fluid circulating system 3 comprises water tank 1, water pump 10, motor 28 and hydraulic pipeline 35; Described hydraulic pipeline 35 comprises water main 7, return main 17 and developmental tube row 29; The water return outlet of the feed water inlet of described water tank 1, water main 7, water pump 10, developmental tube row 29, return main 17 and water tank 1 is connected to form closed-loop path successively; Described motor 28 is for driving water pump 10;
Described water main 7 and developmental tube row 29 are equipped with pressure transducer;
Water-level gauge 23 is provided with in described water tank 1;
Described developmental tube row 29 is provided with ultrasonic flow meter 24, and has connecting hole and the flange-interface 44 of flow sensor 42 to be measured; During detection, flow sensor 42 to be measured is arranged on developmental tube row 29 by connecting hole or flange-interface 44;
Described flow control system 2 comprises local control unit 5 and remote control unit 6; Described remote control unit 6 is connected with local control unit 5 communication; Described local control unit 5 comprises PLC control cabinet 36 and frequency-conversion control cabinet 30; Described PLC control cabinet 36 is connected with frequency-conversion control cabinet 30 communication; Pressure transducer on described water main 7 and developmental tube row 29, and the signal output part of water-level gauge 23 in water tank 1 is all connected with the signal input part of PLC control cabinet 36; The output terminal of described frequency-conversion control cabinet 30 is connected with the control end of motor 28; Described PLC control cabinet 36 gathers water main 7 and developmental tube the row pressure signal of 29, the liquid level signal of water tank 1, and the pressure signal of water main 7 and developmental tube row 29 is sent to frequency-conversion control cabinet 30, frequency-conversion control cabinet 30 carries out PID arithmetic according to pressure signal, regulate the rotating speed of motor 28, control motor 28 constant voltage for stream;
The various control patterns such as flow control system 2 according to the present invention has existingly, long-range, two places." now " refers to that the start and stop of motor and water pump can only at the enterprising line operate of local control unit 5; " long-range " refers to that the start and stop of platform can only operate on remote control unit 6; " two places " refer to that the start and stop of platform can operate on local control unit 5 and remote control unit 6 simultaneously.
Described detecting and analysing system 4 comprises multi-channel signal acquiring instrument 26 and signal analyzer 27; Described ultrasonic flow meter 24 is all connected with the signal input part of multi-channel signal acquiring instrument 26 with the signal output part of flow sensor 42 to be measured; The signal output part of described multi-channel signal acquiring instrument 26 is connected with the signal input part of signal analyzer 27; Described signal analyzer 27 for comparing the signal magnitude of ultrasonic flow meter 24 and flow sensor to be measured 42 output, and exports comparative result; Described multi-channel signal acquiring instrument 26 is for arranging 29 flow signals by ultrasonic flow meter 24 acquisition test pipe, and described signal analyzer 27 also has generation examining report function automatically.
Embodiment 2:
The difference of the present embodiment and above-described embodiment is: described water tank 1 comprises tank 33, tank cover plate 22, the rinforcement bar 37 being located at tank 33 surrounding, tank inlet pipe 31, tank drains pipe 25 and steady flow baffle 34;
Described tank cover plate 22 covers above tank 33, adopts the cover plate that sliding open type can be dismantled; Simple to operate, easy to use;
As shown in Figure 2, described steady flow baffle 34 vertically inserts tank, tank is divided into two cell bodies; Side cell body is provided with feed water inlet, and for connecting the entrance of water main 7, opposite side cell body is provided with water return outlet, for connecting the outlet of return main 17; Install steady flow baffle in water tank, make fluidised form more stable, pump working is more steady;
As shown in Figure 3, steady flow baffle lower end has limbers 38.
Embodiment 3:
The difference of the present embodiment and above-described embodiment is, valve body 21 is installed in the position on described water main 7 between water tank 1 and water pump 10;
Described return main 17 is closing on water tank 1 place installation valve body 20, thus conveniently can control the break-make of hydraulic pipeline.
Embodiment 4:
The difference of the present embodiment and above-described embodiment is, described developmental tube row 29 comprises horizontal tube row 11 and VERTICAL TUBE row 12;
Described horizontal tube row 11 comprises horizontal tube row feed pipe 8, horizontal tube flows back to water pipe 13 and multiple horizontal tube row arm 15; The entrance of horizontal tube row feed pipe 8 is connected with the outlet of water main 7; The outlet that the entrance of multiple horizontal tube row arm 15 all arranges feed pipe 8 with horizontal tube is connected; The outlet of multiple horizontal tube row arm 15 all flows back to water pipe 13 entrance with horizontal tube is connected; The outlet that horizontal tube flows back to water pipe 13 is connected with the entrance of return main 17;
Described VERTICAL TUBE row 12 comprises VERTICAL TUBE row feed pipe 9, VERTICAL TUBE flows back to water pipe 14 and multiple VERTICAL TUBE row arm 16; The outlet that the entrance of VERTICAL TUBE row feed pipe 9 is connected with water main 7 is connected; The outlet that the entrance of multiple VERTICAL TUBE row arm 16 all arranges feed pipe 9 with VERTICAL TUBE is connected; The outlet of multiple VERTICAL TUBE row arm 16 all flows back to water pipe 14 entrance with VERTICAL TUBE is connected; The outlet that VERTICAL TUBE flows back to water pipe 14 is connected with the entrance of return main 17;
Described horizontal tube row's feed pipe 8 and VERTICAL TUBE row feed pipe 9 are all provided with valve body 18;
Described multiple horizontal tube row's arms 15 and multiple VERTICAL TUBE row arm 16 are equipped with ultrasonic flow meter 24, and have connecting hole and the flange-interface 44 of flow sensor 42 to be measured; During detection, multiple flow sensor 42 to be measured is arranged on multiple horizontal tube row's arm 15 and multiple VERTICAL TUBE row arm 16 respectively by connecting hole or flange-interface 44.
Embodiment 5:
The difference of the present embodiment and above-described embodiment is, described horizontal tube row arm 15 is arranged feed pipe 8 by corrugated tube and horizontal tube and is connected; Described horizontal tube row arm 15 comprise horizontal segment and the end of shape bending structure obliquely, the end of described horizontal tube row arm 15 adopts shape bending structure connection obliquely horizontal tube flows back to water pipe 13; The end of described multiple horizontal tube row arm 15 and horizontal tube flow back between water pipe 13 and are all provided with valve body 19;
The horizontal segment of described multiple horizontal tube row arm 15 is equipped with ultrasonic flow meter 24, and has connecting hole and the flange-interface 44 of flow sensor 42 to be measured; During detection, multiple flow sensor 42 to be measured is arranged on the horizontal segment of multiple horizontal tube row arm 15 respectively by connecting hole or flange-interface 44.Adopt the end of shape bending structure obliquely can warranty test pipeline be full water state, ensures that test result is more accurate;
Embodiment 6:
The difference of the present embodiment and above-described embodiment is, as shown in Figure 4, VERTICAL TUBE row arm 16 adopts " N " shape to manage or " U " shape pipe, comprises straight length 39 and bridge piece 40; The end of described multiple VERTICAL TUBE row arm 16 and VERTICAL TUBE flow back between water pipe 14 and are all provided with valve body 19; Adopting " N " shape pipe or " U " shape pipe, can warranty test pipeline be full water state, ensures that test result is more accurate;
The straight length 39 of described multiple VERTICAL TUBE row arm 16 is equipped with ultrasonic flow meter 24, and has connecting hole and the flange-interface 44 of flow sensor 42 to be measured; During detection, multiple flow sensor 42 to be measured is arranged on the straight length 39 of multiple VERTICAL TUBE row arm 16 respectively by connecting hole or flange-interface 44;
Described flange-interface 44 is arranged on flow direction straight length upwards; On same VERTICAL TUBE row arm 16, on the straight length 39 adjacent with the straight length 39 having flange-interface 44, the position of flange-interface 44 symmetry is provided with corrugated tube 41; Flange-interface 44 and corrugated tube 41 symmetry is adopted to install, can make when sensor to be measured is arranged on after above flange-interface 44, its place straight length 39 extends, and adjacent straight length 39 also can freely extend thereupon, thus keeping two flow development lengths consistent, direction is vertical.
Embodiment 7:
The difference of the present embodiment and above-described embodiment is, connecting hole and the flange-interface 44 of multiple flow sensor to be measured 42 is all had, for connecting multiple flow sensor to be measured 42 on the horizontal segment of each horizontal tube row arm 15 and on the straight length 39 of each VERTICAL TUBE row arm 16.Same test pipeline can install multiple flow sensor to be measured, and the convenient test simultaneously carrying out flow sensor to be measured, improves the efficiency of test.
Embodiment 8:
The difference of the present embodiment and above-described embodiment is, the peak of described hydraulic pipeline 35 is provided with gas outlet 32, and the minimum point of described hydraulic pipeline 35 is provided with drainpipe 43.
Present invention also offers a kind of control method of flow sensor detection platform, the flow sensor detection platform described in the above-mentioned any one embodiment of described flow sensor detection platform, its control method is:
A) flow sensor 42 to be measured is arranged on developmental tube row 29 by connecting hole or flange-interface 44;
B) select control model by flow control system 2, control model comprises local control, Long-distance Control, two places control; Local control refers to the start and stop by local control unit 5 operating motor and water pump; Long-distance Control refers to the start and stop by operating motor and water pump on remote control unit 6; Two places control the start and stop of the start and stop referred to by local control unit 5 or remote control unit 6 operating motor and water pump;
During control mode switch, motor and water pump keep original running status;
C) before motor and starting mode of pump, PLC control cabinet 36 arranges the pressure sensor communication on 29 with water-level gauge 23, water main 7 and developmental tube in water tank 1, gathers the pressure signal that the liquid level signal of water tank 1, water main 7 and developmental tube arrange 29; When PLC control cabinet 36 detect the liquid level of water tank 1 exceed preset range or water main 7, developmental tube row 29 pressure signal communication abnormality time, flow control system 2 automatic blocking, forbids motor and starting mode of pump;
D) after motor and starting mode of pump, setting operating pressure value; PLC control cabinet 36 collects the pressure signal of water main 7 and developmental tube row 29, and be sent to frequency-conversion control cabinet 30, frequency-conversion control cabinet 30 carries out PID arithmetic according to pressure signal, regulate the rotating speed of motor 28, fine adjustments is carried out to the pressure of developmental tube row 29, thus reach the operating pressure value of setting, make the pressure equilibrium of hydraulic pipeline 35, ensure that constant voltage is for stream;
E), in operational process, detecting and analysing system 4 gathers the flow signal of ultrasonic flow meter 24 and the flow signal of flow sensor to be measured 42 by multi-channel signal acquiring instrument 26, and carries out communication with signal analyzer 27; Described signal analyzer 27 for comparing the signal magnitude of ultrasonic flow meter 24 and flow sensor to be measured 42 output, and exports comparative result.Signal analyzer 27 according to the analysis data of record, can also generate examining report automatically.
Flow sensor detection platform is also provided with the alarm module be connected with PLC control cabinet 36, when PLC control cabinet 36 detect the liquid level of water tank 1 exceed preset range or water main 7, developmental tube row 29 pressure signal communication abnormality time, trigger alarm module, produces alerting signal.
In describing the invention, term " the highest ", " minimum ", " vertically ", " level ", " upwards " etc. instruction orientation or position relationship be based on actual physics orientation or position relationship.
In the present invention, except as otherwise clear stipulaties, the term such as term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also removably connect, or integral; Be connected by machinery, be also connected by electricity; Directly can be connected, also be connected by medium, or the connection of element internal or interaction relationship.For one of ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the description of this instructions, the description of reference term " embodiment ", " example " etc. means the specific structural features that describes in conjunction with this embodiment or example or feature is contained at least one embodiment of the present invention or example, and the specific structural features of description or feature can combine in one or more embodiment in office or example in an appropriate manner.
Embodiment of the present invention is only be described preferred implementation; above-described embodiment is exemplary; not limitation of the present invention, those of ordinary skill in the art changes above-described embodiment within the scope of the invention, revise, replace and modification all should fall in the protection domain that claims of the present invention determine.

Claims (10)

1. a flow sensor detection platform, is characterized in that: comprise fluid circulating system (3), flow control system (2) and detecting and analysing system (4);
Described fluid circulating system (3) comprises water tank (1), water pump (10), motor (28) and hydraulic pipeline (35); Described hydraulic pipeline (35) comprises water main (7), return main (17) and developmental tube row (29); The water return outlet of the feed water inlet of described water tank (1), water main (7), water pump (10), developmental tube row (29), return main (17) and water tank (1) is connected to form closed-loop path successively; Described motor (28) is for driving water pump (10);
Described water main (7) and developmental tube row (29) are equipped with pressure transducer;
Water-level gauge (23) is provided with in described water tank (1);
Described developmental tube row (29) is provided with ultrasonic flow meter (24), and has connecting hole and the flange-interface (44) of flow sensor to be measured (42); During detection, flow sensor to be measured (42) is arranged on developmental tube row (29) by connecting hole or flange-interface (44);
Described flow control system (2) comprises local control unit (5) and remote control unit (6); Described remote control unit (6) is connected with local control unit (5) communication; Described local control unit (5) comprises PLC control cabinet (36) and frequency-conversion control cabinet (30); Described PLC control cabinet (36) is connected with frequency-conversion control cabinet (30) communication; Pressure transducer on described water main (7) and developmental tube row (29), and the signal output part of water-level gauge (23) in water tank (1) is all connected with the signal input part of PLC control cabinet (36); The output terminal of described frequency-conversion control cabinet (30) is connected with the control end of motor (28);
Described detecting and analysing system (4) comprises multi-channel signal acquiring instrument (26) and signal analyzer (27); Described ultrasonic flow meter (24) is all connected with the signal input part of multi-channel signal acquiring instrument (26) with the signal output part of flow sensor to be measured (42); The signal output part of described multi-channel signal acquiring instrument (26) is connected with the signal input part of signal analyzer (27); The signal magnitude that described signal analyzer (27) exports for comparing ultrasonic flow meter (24) and flow sensor to be measured (42), and export comparative result.
2. flow sensor detection platform according to claim 1, is characterized in that: described water tank (1) comprises tank (33), tank cover plate (22), the rinforcement bar (37) being located at tank (33) surrounding, tank inlet pipe (31), tank drains pipe (25) and steady flow baffle (34);
Described tank cover plate (22) is covered in the top of tank (33), adopts the cover plate that sliding open type can be dismantled;
Described steady flow baffle (34) vertically inserts tank, tank is divided into two cell bodies; Side cell body is provided with feed water inlet, and for connecting the entrance of water main (7), opposite side cell body is provided with water return outlet, for connecting the outlet of return main (17);
Steady flow baffle lower end has limbers (38).
3. flow sensor detection platform according to claim 1, is characterized in that: valve body (21) is installed in the position on described water main (7) between water tank (1) and water pump (10);
Described return main (17) is closing on water tank (1) place installation valve body (20).
4. flow sensor detection platform according to claim 1, is characterized in that: described developmental tube row (29) comprises horizontal tube row (11) and VERTICAL TUBE row (12);
Described horizontal tube row (11) comprises horizontal tube row's feed pipe (8), horizontal tube flows back to water pipe (13) and multiple horizontal tube row's arm (15); The entrance of horizontal tube row's feed pipe (8) is connected with the outlet of water main (7); The entrance of multiple horizontal tube row's arm (15) all arranges feed pipe (8) outlet with horizontal tube is connected; The outlet of multiple horizontal tube row's arm (15) all flows back to water pipe (13) entrance with horizontal tube is connected; The outlet that horizontal tube flows back to water pipe (13) is connected with the entrance of return main (17);
Described VERTICAL TUBE row (12) comprises VERTICAL TUBE row's feed pipe (9), VERTICAL TUBE flows back to water pipe (14) and multiple VERTICAL TUBE row's arm (16); The outlet that the entrance of VERTICAL TUBE row's feed pipe (9) is connected with water main (7) is connected; The entrance of multiple VERTICAL TUBE row's arm (16) all arranges feed pipe (9) outlet with VERTICAL TUBE is connected; The outlet of multiple VERTICAL TUBE row's arm (16) all flows back to water pipe (14) entrance with VERTICAL TUBE is connected; The outlet that VERTICAL TUBE flows back to water pipe (14) is connected with the entrance of return main (17);
Described horizontal tube row's feed pipe (8) and VERTICAL TUBE row's feed pipe (9) are all provided with valve body (18);
Described multiple horizontal tubes row's arm (15) and multiple VERTICAL TUBE row's arm (16) are equipped with ultrasonic flow meter (24), and have connecting hole and the flange-interface (44) of flow sensor to be measured (42); During detection, multiple flow sensor to be measured (42) is arranged in multiple horizontal tube row's arm (15) and multiple VERTICAL TUBE row's arm (16) respectively by connecting hole or flange-interface (44).
5. flow sensor detection platform according to claim 4, is characterized in that: described horizontal tube row's arm (15) is arranged feed pipe (8) by corrugated tube and horizontal tube and is connected; Described horizontal tube row's arm (15) comprise horizontal segment and the end of shape bending structure obliquely, the end of described horizontal tube row's arm (15) adopts shape bending structure connection obliquely horizontal tube flows back to water pipe (13); The end of described multiple horizontal tube row's arm (15) and horizontal tube flow back between water pipe (13) and are all provided with valve body (19);
The horizontal segment of described multiple horizontal tube row's arm (15) is equipped with ultrasonic flow meter (24), and has connecting hole and the flange-interface (44) of flow sensor to be measured (42); During detection, multiple flow sensor to be measured (42) is arranged on the horizontal segment of multiple horizontal tube row's arm (15) respectively by connecting hole or flange-interface (44).
6. flow sensor detection platform according to claim 5, is characterized in that: VERTICAL TUBE row's arm (16) adopts " N " shape pipe or " U " shape pipe, comprises straight length (39) and bridge piece (40); The end of described multiple VERTICAL TUBE row's arm (16) and VERTICAL TUBE flow back between water pipe (14) and are all provided with valve body (19);
The straight length (39) of described multiple VERTICAL TUBE row's arm (16) is equipped with ultrasonic flow meter (24), and has connecting hole and the flange-interface (44) of flow sensor to be measured (42); During detection, multiple flow sensor to be measured (42) is arranged on the straight length (39) of multiple VERTICAL TUBE row's arm (16) respectively by connecting hole or flange-interface (44);
Described flange-interface 44 is arranged on flow direction straight length upwards; On same VERTICAL TUBE row arm 16, on the straight length 39 adjacent with the straight length 39 having flange-interface 44, the position of flange-interface 44 symmetry is provided with corrugated tube 41.
7. flow sensor detection platform according to claim 6, it is characterized in that: all have connecting hole or the flange-interface (44) of multiple flow sensor to be measured (42) on the horizontal segment of each horizontal tube row's arm (15) and on the straight length (39) of each VERTICAL TUBE row's arm (16), for connecting multiple flow sensor to be measured (42).
8. the flow sensor detection platform according to any one of claim 1 ~ 7, it is characterized in that: the peak of described hydraulic pipeline (35) is provided with gas outlet (32), the minimum point of described hydraulic pipeline (35) is provided with drainpipe (43).
9. a control method for flow sensor detection platform, is characterized in that, described flow sensor detection platform adopts the flow sensor detection platform according to any one of claim 1 to 8, and its control method is:
A) flow sensor to be measured (42) is arranged on developmental tube row (29) by connecting hole or flange-interface (44);
B) select control model by flow control system (2), control model comprises local control, Long-distance Control, two places control; Local control refers to the start and stop by local control unit (5) operating motor and water pump; Long-distance Control refers to the start and stop by the upper operating motor of remote control unit (6) and water pump; Two places control the start and stop of the start and stop referred to by local control unit 5 or remote control unit (6) operating motor and water pump;
During control mode switch, motor and water pump keep original running status;
C) before motor and starting mode of pump, PLC control cabinet (36) arranges the pressure sensor communication on (29) with water tank (1) interior water-level gauge (23), water main (7) and developmental tube, gather the pressure signal that the liquid level signal of water tank (1), water main (7) and developmental tube arrange (29); When PLC control cabinet (36) detect the liquid level of water tank (1) exceed preset range or water main (7), developmental tube row (29) pressure signal communication abnormality time, flow control system (2) automatic blocking, forbids motor and starting mode of pump;
D) after motor and starting mode of pump, setting operating pressure value; PLC control cabinet (36) collects the pressure signal of water main (7) and developmental tube row (29), and be sent to frequency-conversion control cabinet (30), frequency-conversion control cabinet (30) carries out PID arithmetic according to pressure signal, regulate the rotating speed of motor (28), the pressure of developmental tube row (29) is regulated, thus reaches the operating pressure value of setting;
E) in operational process, detecting and analysing system (4) gathers the flow signal of ultrasonic flow meter (24) and the flow signal of flow sensor to be measured (42) by multi-channel signal acquiring instrument (26), and carries out communication with signal analyzer (27); The signal magnitude that described signal analyzer (27) exports for comparing ultrasonic flow meter (24) and flow sensor to be measured (42), and export comparative result.
10. the control method of a kind of flow sensor detection platform according to claim 9, it is characterized in that, flow sensor detection platform is also provided with the alarm module be connected with PLC control cabinet (36), when PLC control cabinet (36) detect the liquid level of water tank (1) exceed preset range or water main (7), developmental tube row (29) pressure signal communication abnormality time, trigger alarm module, produces alerting signal.
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