CN2247338Y - Dynamic weighing fluid tester - Google Patents
Dynamic weighing fluid tester Download PDFInfo
- Publication number
- CN2247338Y CN2247338Y CN 95240038 CN95240038U CN2247338Y CN 2247338 Y CN2247338 Y CN 2247338Y CN 95240038 CN95240038 CN 95240038 CN 95240038 U CN95240038 U CN 95240038U CN 2247338 Y CN2247338 Y CN 2247338Y
- Authority
- CN
- China
- Prior art keywords
- measuring tube
- lever
- upper lever
- wire rope
- fluid
- 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 - Fee Related
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The utility model relates to an inline type two-phase fluid tester with a continuous and dynamic weighing structure and is composed of a measuring tube which is connected in a pipeline in series and an electromechanical sensing part. The measuring tube is connected with a fixed pipeline by elastic joints of both ends of the measuring tube, and a pressure sensor is arranged on a pipeline which is arranged at the front of the elastic joint which is arranged at the anterior part. An ultrasonic flow speed probe is arranged at the anterior half part of the measuring tube, and the measuring tube is connected with two roots of levers, an upper one and a lower one, which are respectively arranged at the upper part of the measuring tube by two roots of steel wires. The steel wire of the anterior part is connected with the anterior part of the lower lever, the back end of the lower lever is supported on the lower side of the middle part of the upper lever, and the anterior part of the upper lever is provided with a balance pressure steel, an eccentric wheel and a micro motor. The rear end of the upper lever is connected with the rear end of the measuring tube, and a force measuring sensor is also arranged on the upper lever.
Description
The utility model relates to measurement, is meant a kind of dynamic weighing two-phase fluid pick-up unit that adopts the online continuous dynamic weighing method of fluid to detect two-phase fluid concentration, flow velocity, flow etc. especially.
Existing detection to two-phase fluid concentration is generally adopted radioactive ray or various ripple to penetrate pipeline both at home and abroad or is detected by pipeline reflection, refraction, but these methods are subjected to character, shape, size and the liquid distribution situation in fluid such as liquid, and the influence of many-sided factor such as material of fluid-mixing flow velocity, pipeline, diameter, exist the defective that can not guarantee accuracy of detection, thereby limited the territory of its use greatly.Especially at home most of occasions still adopt the method for estimation to the control of concentration and flow, often adopt as the calculating of the workload of hog barge and plug in mark post etc. and measure method, and detection means very falls behind the requirement that does not catch up with engineer operation far away.
The purpose of this utility model just is that the detection that changes traditional two-phase fluid pipeline transportation falls behind situation, a kind of two-phase fluid pick-up unit that adopts the online continuous dynamic weighing structure of fluid is provided, and this pick-up unit cooperates corresponding instrument can detect the concentration, flow velocity, flow etc. of metering two-phase fluid.
Fluid detecting device of the present utility model adopts online continuous dynamic weighing structure, by being serially connected in ducted measuring tube and dynamo-electric transducing part is formed, its longitudinal length along pipeline is about 2000mm, comprises parts such as elastomeric joint, measuring tube, outer tube, pressure transducer, doppler ultrasound flow velocity probe, wire rope, following lever, upper lever, balance foundary weight, eccentric wheel, micromotor, force cell.Measuring tube is provided with outer tube, is marked with the antifreeze press water that has added anti freezing solution between the inner and outer pipes, in order to the pressure of balance elasticity joint area fluid.Measuring tube is connected with fixed-piping by the elastomeric joint at two ends, pressure transducer is installed on the preceding fixed-piping of front end elastomeric joint, ultrasonic flow velocity probe is installed on the first half of measuring tube, the two ends of measuring tube link to each other with two levers up and down of portion fixed thereon respectively by two wire rope, the wire rope of front end connects the front end of lever down, the rear end of following lever be bearing in upper lever middle part below, the front end of upper lever is balance foundary weight, eccentric wheel and micromotor, its rear end links to each other with the wire rope of measuring tube rear end, and force cell also is housed on the upper lever.
When carrying out work, the fluid measuring tube of flowing through, make fluid weight in the measuring tube also along with change owing to concentration changes, this variation by wire rope and up and down lever transmission continuously signal is passed to the control display instrument by cable by force cell again to force cell.By being adsorbed on the flow velocity that doppler ultrasound flow velocity probe on the measuring tube can test fluid.Flow through the required time of measuring tube according to the fluid momentum area that obtains from force cell and equivalent length and fluid-mixing, can measure the volumetric flow rate of fluid.For the concentration that prevents to be caused by temperature drift and time drift detects error, fluid detecting device of the present utility model has adopted by micromotor, the compensation mechanism of unloading in short-term that eccentric wheel and force cell constitute, by the control micromotor eccentric wheel is rotated, for example per hour rotate a circle, because eccentric wheel resets after rotating upper lever balance foundary weight one end being depressed by trace immediately, thereby make force cell unloading a moment (several seconds kinds approximately), at this moment control the display instrument control program still by the output that unloads during preceding instantaneous fluid concentrations measures unloading, this stabiloity compensation can be similar to regards online compensation as.In order to overcome of the influence of factors such as vibration, swing and impact and fluid flow and working pressure pulsation to accuracy of detection, in fluid detecting device, also be provided with pivot weight, cooperate instrument under programmed control by with pivot weight relatively, proofread and correct weighting error.Pressure transducer passes to the control display instrument with measured fluid pressure signal, by routine processes, in order to the influence of compensator fluid pressure to sense weight.
Measurement range of the present utility model and condition of work are as follows:
One, measurement range
1. two-phase fluid concentration volumetric concentration＜60%;
2. two-phase fluid flow velocity 0.5m/s～8m/s;
3. two-phase fluid proportion poor＞0.05g/cm
3Pipe diameter is relevant with detecting
Two, condition of work
1. internal diameter of the pipeline＞38mm;
2. close materials such as pipeline material steel, cast iron, plastics;
3. the normal serviceability temperature of force transducer: dosimetric sensors-10～55 ℃,
Inlet sensor-20～100 ℃.
Advantage of the present utility model just is to adopt the online continuous dynamic weighing method of fluid to cooperate the control corresponding display instrument to detect the concentration of two-phase fluid, compares with detection method such as radioactive ray, has reduced disturbing factor, has avoided radiation pollution.Also owing to adopt the ultrasonic Doppler speed-measuring method, detecting element contact with fluid, can detect suspended solids concentration higher be with corrosive fluid, enlarged the two-phase fluid sensing range, and had installation and maintenance advantage easily.Simultaneously owing to adopt the micromotor control eccentric regularly to rotate feel trim actuator, the benchmark weight be set and adopt the hydraulic resistance balance mode to cooperate control display instrument corresponding control programs can solve the influence of the pressure variation of temperature drift, time drift and fluid in the testing process and problems such as vibration, swing and shake to accuracy of detection.Therefore fluid detecting device of the present utility model has development prospect widely as the pick-up unit that a kind of convenience is suitable in two-phase fluid pipeline transportation fields such as mud, paper pulp, hydromine and chemical industry solutions.
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is a fluid detecting device synoptic diagram of the present utility model.
With reference to Fig. 1, fluid detecting device of the present utility model is serially connected in the pipeline, Its longitudinal length along pipeline is about 2000mm, by pressure sensor [1], how general Strangle ultrasonic flow velocity probe [2], steel wire rope A[3], lower lever [4], micro machine [5], Eccentric wheel [6], balance foundary weight [7], upper lever [8], force cell [9], survey Buret [10], steel wire rope B[11], elastomeric joint [12], stationary pipes [13], outer Sleeve pipe [14] consists of. Pressure sensor [1] is installed in the fixing of elastomeric joint front end On the pipe [13], doppler ultrasound flow velocity probe [2] is installed on the measuring tube [10], surveys Buret [10] two ends link to each other its two ends by elastomeric joint [12] with stationary pipes [13] Locate respectively by steel wire rope A[3 near elastomeric joint [12]] and steel wire rope B[11] with The front end of lower lever [4] links to each other with the rear end of upper lever [8]; Measuring tube [10] is provided with Outer tube [14] is marked with the anti-freezing pressure water that has added anti-icing fluid and uses between the inner and outer pipes With the pressure of balance elasticity joint area fluid, steel wire rope A[3] and steel wire rope B[11] Going out outer tube [14] locates to be equipped with sealing gasket and prevents spilling of press water; Lower lever [4] The rear end be bearing in below the middle part of upper lever [8], the front end of upper lever [8] is for flat Weighing apparatus foundary weight [7], eccentric wheel [6] and micro machine [5], an end of force cell [9] Be installed in the position that upper lever approaches the middle part, the support of its other end and two levers The position is installed on the outer tube.
Below be an embodiment of the present utility model.
Certain is adopted the sand ship and carries out obtaining from underwater installation, per hour 80～100 tons of (mortar amount 300～400M of yield
3/ hour).Homemade gamma-rays densimeter of former employing and electromagnetic flowmeter detect metering, and the user feels to have following defective anxious to be solved, and gamma-rays has the radiocontamination workman to fear near radioactive source, and the pick-up unit volume is big, and use is inconvenient, and it is frequent that instrument does not have the vibration abatement fault.Now use the utility model fluid detecting device to cooperate the control display instrument of Z80CPU main control system to detect metering, check through real ship: measure and the contrast of the utility model concentration displayed value with the pulp density kettle, minute is 4 hours, write down concentration displayed value and sediment transport pipe outlet actual concentrations value respectively every 15 minutes, actual concentrations mean value is 32.33% after measured, the concentration displayed value is 32.30%, only differs 0.03%.With the actual stacking number and the contrast of output displayed value of leaving the stockyard in, minute is 8 hours (class), and it is 672 tons that actual measurement class produces, and displayed value is 685 tons, both relative errors 1.9%.The user thinks that fluid detecting device volume of the present utility model is not afraid of shake, no radiocontamination for a short time, and detects accurately minimumly with actual difference, is fit to very much adopt the sand ship and uses, and hope is applied as early as possible.
Claims (2)
1, a kind of fluid detecting device, it is characterized in that adopting online continuous dynamic weighing structure, by being serially connected in ducted measuring tube and dynamo-electric transducing part is formed, its longitudinal length along pipeline is about 2000mm, comprises parts such as elastomeric joint, measuring tube, outer tube, pressure transducer, doppler ultrasound flow velocity probe, wire rope, following lever, upper lever, balance foundary weight, eccentric wheel, micromotor, force cell; Measuring tube is connected with fixed-piping by the elastomeric joint at two ends, pressure transducer is installed on the preceding fixed-piping of front end elastomeric joint, the doppler ultrasound flow velocity probe is installed on the first half of measuring tube, the two ends of measuring tube link to each other with two levers up and down of portion fixed thereon respectively by two wire rope, the wire rope of front end connects the front end of lever down, the rear end of following lever be bearing in upper lever middle part below, the front end of upper lever is the balance foundary weight, eccentric wheel and micromotor, its rear end links to each other with the wire rope of measuring tube rear end, and force cell also is housed on the upper lever.
2, fluid detecting device according to claim 1 is characterized in that measuring tube is provided with outer tube, is marked with the antifreeze press water that has added anti freezing solution between the inner and outer pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95240038 CN2247338Y (en) | 1995-06-29 | 1995-06-29 | Dynamic weighing fluid tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95240038 CN2247338Y (en) | 1995-06-29 | 1995-06-29 | Dynamic weighing fluid tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2247338Y true CN2247338Y (en) | 1997-02-12 |
Family
ID=33881703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95240038 Expired - Fee Related CN2247338Y (en) | 1995-06-29 | 1995-06-29 | Dynamic weighing fluid tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2247338Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107970586A (en) * | 2017-12-05 | 2018-05-01 | 三峡大学 | A kind of dragon boat race simulated testing system and method |
-
1995
- 1995-06-29 CN CN 95240038 patent/CN2247338Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107970586A (en) * | 2017-12-05 | 2018-05-01 | 三峡大学 | A kind of dragon boat race simulated testing system and method |
| CN107970586B (en) * | 2017-12-05 | 2023-03-14 | 三峡大学 | Dragon boat race simulation test system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |