CN204594514U - Laser micrometeor gauge - Google Patents
Laser micrometeor gauge Download PDFInfo
- Publication number
- CN204594514U CN204594514U CN201520219769.2U CN201520219769U CN204594514U CN 204594514 U CN204594514 U CN 204594514U CN 201520219769 U CN201520219769 U CN 201520219769U CN 204594514 U CN204594514 U CN 204594514U
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- intermediate receptacle
- optical fiber
- valve
- laser
- pipeline
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Abstract
The utility model is a kind of laser micrometeor gauge, and comprise pressure system, measuring system and data acquisition system (DAS), pressure system comprises forcing pump, and forcing pump is parallel with the first intermediate receptacle and the second intermediate receptacle by the first control pressure line; First intermediate receptacle is connected with the measuring tube of pressure chamber inside by the first pipeline, detected fluid pipeline, and the second intermediate receptacle is connected with through bottom pressure chamber by the second pipeline; Measuring system comprises aforesaid measuring tube, one end open is closed in its one end, blind end is provided with connecting hole and is tightly connected by this connecting hole and detected fluid pipeline outlet, openend side is provided with optical fiber collimator, optical fiber collimator opposite side is connected with the first optical fiber and the second optical fiber, and the other end of the first optical fiber and the second optical fiber is connected to laser range sensor; Forcing pump and laser range sensor are all connected to data acquisition system (DAS).This gauge can solve the low problem of micrometeor fluid measurement precision under condition of high voltage, and realizes Automatic survey.
Description
Technical field
The utility model relates to the measuring technique of fluid micro-flux, particularly relates to a kind of laser micrometeor gauge.
Background technology
Exploiting in relevant simulated experiment to fine and close hydrocarbon-bearing pool, its experimental pressure is very high, is generally tens even nearly hundred MPas; In addition, because hole is very tiny, the flow of Experimental Flowing Object is ultralow, is generally to receive liter/min (nL/min) level.To these experiments, in especially astable (as pulse, vibration) seepage flow and oil displacement experiment, the metering of micrometeor, is the technological difficulties that fine and close hydrocarbon-bearing pool extracting experiment is urgently captured.
In such experiment, current general flowmeter is if electromagnetic flowmeter, turbo flow meter, mass flowmeter etc. are all because range is excessive, measuring accuracy is low and cannot apply.For fluid micro-flow measurement, the method that high pressure down-off conventional in laboratory is measured has: volume pump method, capillary pressure measuring method and visual microflow method.Wherein, the impact of volume pump method due to liquid compression under high pressure and the impact of pump wastage under high pressure itself, cause measuring error larger; Capillary pressure measuring method requires high to Pressure Sensor Precision, and existing Pressure Sensor Precision cannot meet the metering of high pressure micro-flow; Visual microflow method provides the tiny flow quantity metering method of a kind of pressure≤30MPa, the method is applicable to mul/min (μ L/min) level flow rate test, liter/min (nL/min) level flow can not be received by accurate-metering, and the continuous measurement of ultra-low quantity of flow (especially unsteady fluid flow) under High-Voltage Experimentation condition cannot be met.
Thus, the present inventor relies on experience and the practice of being engaged in relevant industries for many years, proposes a kind of laser micrometeor gauge, to overcome the defect of prior art.
Utility model content
The purpose of this utility model is to provide a kind of laser micrometeor gauge, the problem that micrometeor fluid measurement precision under prior art mesohigh condition is low can be solved, this laser micrometeor gauge is simple to operate, can under the condition not disturbing micrometeor to test, carry out continuous print to high pressure micro-flow fluid to measure in real time, achieve the robotization of micrometeor fluid measurement under condition of high voltage.
The purpose of this utility model realizes like this, a kind of laser micrometeor gauge, comprise pressure system, measuring system and data acquisition system (DAS), described pressure system comprises a forcing pump, described forcing pump one end is connected with the first control pressure line, described first control pressure line is parallel with the first intermediate receptacle and the second intermediate receptacle that vertically arrange; Be provided with the first valve between described first control pressure line and described first intermediate receptacle bottom inlet, described first intermediate receptacle top exit is connected to horizontally disposed detected fluid pipeline by the first pipeline, and described first pipeline is provided with the second valve; Be provided with the 3rd valve between described detected fluid line inlet and described first pipeline outlet, described detected fluid pipeline outlet hermetically passing one pressure chamber side is connected with described measuring system; Be provided with the 4th valve between described first control pressure line and described second intermediate receptacle bottom inlet, described second intermediate receptacle top exit is connected with through bottom described pressure chamber by the second pipeline, described second pipeline is provided with the 5th valve;
Described measuring system comprises the measuring tube that is horizontally placed on described pressure chamber inside, and one end open is closed in described measuring tube one end, and the blind end of described measuring tube is provided with connecting hole, and described detected fluid pipeline outlet and described connecting hole are tightly connected; The openend side of described measuring tube is provided with optical fiber collimator, described optical fiber collimator opposite side is between the upper and lower every being connected with horizontally disposed first optical fiber and the second optical fiber, and the other end of described first optical fiber and described second optical fiber respectively pressure chamber opposite side described in hermetically passing is connected to a laser range sensor;
Described forcing pump and described laser range sensor are all connected to described data acquisition system (DAS).
In a better embodiment of the present utility model, described pressure chamber internal pressure value is more than or equal to 0.1 MPa and is less than or equal to 160 MPas.
In a better embodiment of the present utility model, described measuring tube internal diameter is more than or equal to 1.5 millimeters and is less than or equal to 3 millimeters.
In a better embodiment of the present utility model, described first intermediate receptacle inside is provided with first piston, is provided with the second piston in described second intermediate receptacle.
In a better embodiment of the present utility model, described first intermediate receptacle inside is positioned at above described first piston is equipped with mercury, and described second intermediate receptacle inside is positioned at above described second piston and is filled with nitrogen.
In a better embodiment of the present utility model, it is inner that described first control pressure line, the first valve, the first intermediate receptacle, the first pipeline, the second valve, detected fluid pipeline, the 3rd valve, the 4th valve, the second intermediate receptacle, the second pipeline, the 5th valve and pressure chamber are arranged at a constant temperature oven, and described first optical fiber is connected with described laser range sensor through described constant temperature oven side with described second optical fiber.
In a better embodiment of the present utility model, the measuring accuracy of described constant temperature oven is 0.1 DEG C.
In a better embodiment of the present utility model, the length of described measuring tube is less than the distance between described 3rd valve and described first pipeline outlet.
From the above mentioned, laser micrometeor gauge of the present utility model, structure is simple, easy to operate, realize balancing each other with the pressure of tested high-pressure fluid by the cooperation of pressure chamber, the second intermediate receptacle and forcing pump, measurement environment pressure stability, meets requirement that is stable and unsteady fluid flow bulk measurement; Make full use of laser range sensor and optical fiber, decrease measuring process error, improve measuring accuracy; Achieve automatic control by data acquisition system (DAS), decrease manually-operated impact, achieve real-time measurement, for Micro-flows experiment Quantitative study provides accurate data.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the utility model and explain, does not limit scope of the present utility model.Wherein:
Fig. 1: be laser micrometeor gauge structural representation of the present utility model.
Embodiment
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and embodiment of the present utility model is described.
As shown in Figure 1, the laser micrometeor gauge 100 that the utility model provides, comprise pressure system 1, measuring system 2 and data acquisition system (DAS) 3, pressure system 1 comprises a forcing pump 11, in the present embodiment, forcing pump 11 is high-precision pressure pump, can adopt RUSKA 7615 high-pressure pump (prior art), its pressurization scope is 0.1 MPa to 160 MPa (comprising head and the tail numerical value), and pressure precision is 0.02% range; Forcing pump 11 one end is connected with the first control pressure line 12, first control pressure line 12 is parallel with the first intermediate receptacle 13 and the second intermediate receptacle 14 vertically arranged, in the present embodiment, first intermediate receptacle 13 inside is provided with first piston 130, the second piston 140 is provided with in second intermediate receptacle 14, first intermediate receptacle 13 inside is positioned at above first piston 130 is equipped with mercury, and the second intermediate receptacle 14 inside is positioned at above the second piston 140 and is filled with nitrogen; Be provided with the first valve 131, first intermediate receptacle 13 top exit between first control pressure line 12 and the first intermediate receptacle 13 bottom inlet to be connected on horizontally disposed detected fluid pipeline 4, first pipeline 132 by the first pipeline 132 and to be provided with the second valve 133; Detected fluid pipeline 4 entrance (is not included in the utility model structure with detected high pressure micro-flow experimental provision, not shown) connect, be provided with the 3rd valve 41 between detected fluid pipeline 4 entrance and the first pipeline 132 export, detected fluid pipeline 4 exit seal is connected with measuring system 2 through pressure chamber 15 side; The 4th valve 141 is provided with between first control pressure line 12 and the second intermediate receptacle 14 bottom inlet, second intermediate receptacle 14 top exit is connected with through bottom pressure chamber 15 by the second pipeline 142, second pipeline is provided with the 5th valve 143, in the present embodiment, in order to the requirement of satisfied measurement condition of high voltage, pressure chamber 15 internal pressure value is more than or equal to 0.1 MPa and is less than or equal to 160 MPas.
As shown in Figure 1, measuring system 2 comprises the measuring tube 21 that is horizontally placed on pressure chamber 15 inside, in the present embodiment, measuring tube 21 is high pressure resistant pipes, it can be glass tube, steel pipe or other materials pipe, in order to the tiny flow quantity of Measurement accuracy liquid, it is very little that the internal diameter of measuring tube 21 is generally arranged, but in order to meet laser measurement requirement, the internal diameter of measuring tube 21 is more than or equal to 1.5 millimeters and is less than or equal to 3 millimeters, simultaneously, terminate in rear detected fluid reflux to the first pipeline 132 in order to avoid measuring, the length of measuring tube 21 be less than the 3rd valve 41 and the first pipeline 132 export between distance, thus in guarantee measuring process detected fluid all the time between the 3rd valve 41 and the first pipeline 132 export, and can not enter in the first pipeline 132 because of reflux, one end open is closed in measuring tube 21 one end, and the blind end of measuring tube 21 is provided with connecting hole 211, and detected fluid pipeline 4 exports and is tightly connected with connecting hole 211, the openend side of measuring tube 21 is provided with optical fiber collimator 22, optical fiber collimator 22 opposite side between the upper and lower every the other end being connected with horizontally disposed first optical fiber 23 and the second optical fiber 24, first optical fiber 23 and the second optical fiber 24 respectively hermetically passing pressure chamber 15 opposite side be connected to a laser range sensor 25.
Forcing pump 11 and laser range sensor 25 are all connected to data acquisition system (DAS) 3, data acquisition system (DAS) 3 is generally computing machine, the pressure value of forcing pump 11 and the measurement numerical value of laser range sensor 25 show all in real time and are recorded in data acquisition system (DAS) 3, can the force value of controlled pressure pump 11 and the launching and receiving of laser range sensor 25 in real time by data acquisition system (DAS) 3, achieve measuring process robotization.
Further, as shown in Figure 1, in order to ensure the stability of experimental temperature under condition of high voltage, it is inner that first control pressure line 12, first valve 131, first intermediate receptacle 13, first pipeline 132, second valve 133, detected fluid pipeline 4, the 3rd valve 41, the 4th valve 141, second intermediate receptacle 14, second pipeline 142, the 5th valve 143 and pressure chamber 15 are arranged at a constant temperature oven 5, and the first optical fiber 23 is connected with laser range sensor 25 through constant temperature oven 5 side with the second optical fiber 24.In the present embodiment, the precision of constant temperature oven 5 is 0.1 DEG C, ensure that the precision of temperature measurement.
Before the laser micrometeor gauge 100 that the utility model provides is measured, detected fluid pipeline 4 entrance is connected with detected high pressure micro-flow experimental provision, experimentally requires the force value of preset pressure pump 11 in data acquisition system (DAS).During measurement, first the second valve 133 is closed, 3rd valve 41, open the first valve 131, 4th valve 141 and the 5th valve 143, opening pressure pump 11, default force value is reached to pressure in the first intermediate receptacle 13 and the second intermediate receptacle 14 bottom water injection or water suction maintenance pressure chamber 15 by forcing pump 11, after pressure stability, close the 4th valve 141, open the second valve 133, and the pressure of a little (being generally about 10 kPas) adherence pressure pump 11, after several seconds, close the second valve 133, force value before Recovery and rebuild pump 11, now a small amount of mercury enters in detected fluid pipeline 4.Then, open laser range sensor 25, open the 3rd valve 41, detected fluid to enter in detected fluid pipeline 4 and promotes mercury and enters in measuring tube 21, detected fluid promotes mercury and moves in measuring tube 21, laser range sensor 25 Emission Lasers are by the first optical fiber 23 and optical fiber collimator 22 directive mercury liquid level, reflected light passes laser range sensor 25 back by optical fiber collimator 22 and the second optical fiber 24, the displacement of mercury in measuring tube 21 is recorded and returned data acquisition system 3 by the principle of laser ranging, measure distance and the time relationship at mercury interface in laser range sensor 25 and measuring tube 21, transient flow can be calculated.After obtaining analysis result, close the first valve 131 and the 3rd valve 41, open the 4th valve 141, the pressure of the adherence pressure pump 11 that (is generally about 10 kPas) a little, mercury released measuring tube 21 in the lifting of pressure chamber 15 internal pressure and reflux is returned in the first intermediate receptacle 13, can repeat aforesaid operations afterwards and measure next time.
From the above mentioned, laser micrometeor gauge of the present utility model, structure is simple, easy to operate, realize balancing each other with the pressure of tested high-pressure fluid by the cooperation of pressure chamber, the second intermediate receptacle and forcing pump, measurement environment pressure stability, meets requirement that is stable and unsteady fluid flow bulk measurement; Make full use of laser range sensor and optical fiber, decrease measuring process error, improve measuring accuracy; Achieve automatic control by data acquisition system (DAS), decrease manually-operated impact, achieve real-time measurement, for Micro-flows experiment Quantitative study provides accurate data.
The foregoing is only the schematic embodiment of the utility model, and be not used to limit scope of the present utility model.Any those skilled in the art, equivalent variations done under the prerequisite not departing from design of the present utility model and principle and amendment, all should belong to the scope of the utility model protection.
Claims (8)
1. a laser micrometeor gauge, it is characterized in that: described laser micrometeor gauge comprises pressure system, measuring system and data acquisition system (DAS), described pressure system comprises a forcing pump, described forcing pump one end is connected with the first control pressure line, described first control pressure line is parallel with the first intermediate receptacle and the second intermediate receptacle that vertically arrange; Be provided with the first valve between described first control pressure line and described first intermediate receptacle bottom inlet, described first intermediate receptacle top exit is connected to horizontally disposed detected fluid pipeline by the first pipeline, and described first pipeline is provided with the second valve; Be provided with the 3rd valve between described detected fluid line inlet and described first pipeline outlet, described detected fluid pipeline outlet hermetically passing one pressure chamber side is connected with described measuring system; Be provided with the 4th valve between described first control pressure line and described second intermediate receptacle bottom inlet, described second intermediate receptacle top exit is connected with through bottom described pressure chamber by the second pipeline, described second pipeline is provided with the 5th valve;
Described measuring system comprises the measuring tube that is horizontally placed on described pressure chamber inside, and one end open is closed in described measuring tube one end, and the blind end of described measuring tube is provided with connecting hole, and described detected fluid pipeline outlet and described connecting hole are tightly connected; The openend side of described measuring tube is provided with optical fiber collimator, described optical fiber collimator opposite side is between the upper and lower every being connected with horizontally disposed first optical fiber and the second optical fiber, and the other end of described first optical fiber and described second optical fiber respectively pressure chamber opposite side described in hermetically passing is connected to a laser range sensor;
Described forcing pump and described laser range sensor are all connected to described data acquisition system (DAS).
2. laser micrometeor gauge as claimed in claim 1, is characterized in that: described pressure chamber internal pressure value is more than or equal to 0.1 MPa and is less than or equal to 160 MPas.
3. laser micrometeor gauge as claimed in claim 1, is characterized in that: described measuring tube internal diameter is more than or equal to 1.5 millimeters and is less than or equal to 3 millimeters.
4. laser micrometeor gauge as claimed in claim 1, is characterized in that: described first intermediate receptacle inside is provided with first piston, is provided with the second piston in described second intermediate receptacle.
5. laser micrometeor gauge as claimed in claim 4, it is characterized in that: described first intermediate receptacle inside is positioned at above described first piston is equipped with mercury, described second intermediate receptacle inside is positioned at above described second piston and is filled with nitrogen.
6. laser micrometeor gauge as claimed in claim 1, it is characterized in that: it is inner that described first control pressure line, the first valve, the first intermediate receptacle, the first pipeline, the second valve, detected fluid pipeline, the 3rd valve, the 4th valve, the second intermediate receptacle, the second pipeline, the 5th valve and pressure chamber are arranged at a constant temperature oven, described first optical fiber is connected with described laser range sensor through described constant temperature oven side with described second optical fiber.
7. laser micrometeor gauge as claimed in claim 6, is characterized in that: the measuring accuracy of described constant temperature oven is 0.1 DEG C.
8. laser micrometeor gauge as claimed in claim 1, is characterized in that: the length of described measuring tube is less than the distance between described 3rd valve and described first pipeline outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520219769.2U CN204594514U (en) | 2015-04-09 | 2015-04-09 | Laser micrometeor gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520219769.2U CN204594514U (en) | 2015-04-09 | 2015-04-09 | Laser micrometeor gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204594514U true CN204594514U (en) | 2015-08-26 |
Family
ID=53930659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520219769.2U Withdrawn - After Issue CN204594514U (en) | 2015-04-09 | 2015-04-09 | Laser micrometeor gauge |
Country Status (1)
| Country | Link |
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| CN (1) | CN204594514U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764500A (en) * | 2015-04-09 | 2015-07-08 | 中国石油大学(北京) | Laser micro-flow metering instrument |
| CN105628119A (en) * | 2016-01-13 | 2016-06-01 | 中国石油天然气股份有限公司 | Micro-flow measuring device for capillary bundle |
-
2015
- 2015-04-09 CN CN201520219769.2U patent/CN204594514U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764500A (en) * | 2015-04-09 | 2015-07-08 | 中国石油大学(北京) | Laser micro-flow metering instrument |
| CN104764500B (en) * | 2015-04-09 | 2018-04-17 | 中国石油大学(北京) | Laser micrometeor gauge |
| CN105628119A (en) * | 2016-01-13 | 2016-06-01 | 中国石油天然气股份有限公司 | Micro-flow measuring device for capillary bundle |
| CN105628119B (en) * | 2016-01-13 | 2018-11-16 | 中国石油天然气股份有限公司 | Micro-flow measuring device for capillary bundle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150826 Effective date of abandoning: 20180417 |
|
| AV01 | Patent right actively abandoned |