CN104359521A - Large-capacity storage tank volume detection system and calibration method - Google Patents

Large-capacity storage tank volume detection system and calibration method Download PDF

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Publication number
CN104359521A
CN104359521A CN201410650742.9A CN201410650742A CN104359521A CN 104359521 A CN104359521 A CN 104359521A CN 201410650742 A CN201410650742 A CN 201410650742A CN 104359521 A CN104359521 A CN 104359521A
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storage tank
pipeline
tank
flowmeter
copacity
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CN104359521B (en
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逯军
孙海涛
唐永欣
吴佳灵
孙凤举
任闽
何小兵
王德志
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China Academy of Launch Vehicle Technology CALT
Beijing Aerospace Institute for Metrology and Measurement Technology
Capital Aerospace Machinery Co Ltd
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China Academy of Launch Vehicle Technology CALT
Beijing Aerospace Institute for Metrology and Measurement Technology
Capital Aerospace Machinery Co Ltd
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Abstract

The invention provides a large-capacity storage tank volume detection system and calibration method. According to the large-capacity storage tank volume detection system, a water outlet pipeline of a storage tank I, a water outlet pipeline of a storage tank II and a water outlet pipe of a storage tank III are connected with the inlet of a circulating pressurizing conveying pump set, wherein the outlet of the circulating pressurizing conveying pump set is connected with the inlet of a pressure stabilizing device by a pipeline; the outlet of the pressure stabilizing device is connected with the inlet of a standard meter flow meter set by a pipeline; the outlet of the standard meter flow meter set is connected with the inlet of a flow adjusting device by a pipeline; an outlet pipeline of the flow adjusting device is divided into four branches which are connected with a water inlet pipeline of the storage tank I, a water inlet pipeline of the storage tank II, a water inlet pipeline of the storage tank III and a water inlet pipeline of a flow meter checking standard device respectively; the flow meter checking standard device is provided with an independent liquid source system and an water outlet pipeline of the flow meter checking standard device is connected with the inlet of the circulating pressurizing conveying pump set. The large-capacity storage tank volume detection system has strong adaptability and small measurement errors, so that the flow metering capability of the system is greatly improved.

Description

A kind of Large Copacity tank volume detection system and scaling method
Technical field
The invention belongs to metrological testing technology field, be specifically related to a kind of Large Copacity tank volume detection system and scaling method.
Background technology
At present, the usable range of Large Copacity storage tank spreads all over the every field such as petrochemical complex, space flight gradually, and people not only pay close attention to the size of its memory space sometimes, volume corresponding under more paying close attention in storage tank (case) when holding medium different liquid level number.That is, Large Copacity storage tank on ordinary meaning is only used for depositing the actual needs that medium can not meet research and production far away, and make it that there is measure attribute after storage tank is carried out volumetric calibration, or make according to the volumetric values under its different liquid level the development trend that science judgment is only current Large Copacity storage tank.
In spationautics field, usually pay close attention to the fuel space at tank several feature liquid level place.At present, the volumetric calibration of Rocket tank generally adopts overall weight method, namely the LOAD CELLS of wide range is installed bottom casing detection system by special tooling device, by controlling the liquid level of measuring media in tank and then obtaining the liquid quality at casing several feature liquid level place, then draw liquid level-volume correspondence table through excess temperature-density revision.Generally, this weighing system at least needs 3 LOAD CELLS.And being the accuracy ensureing volume measurement, LOAD CELLS needs periodic check.Due to very high to the coherence request installed during multiple LOAD CELLS associated working, therefore it is large to reinstall work difficulty after LOAD CELLS verification, more be not easy to sensor field-checking, moreover direct load method cannot be adopted to verify for large quality LOAD CELLS, precision can not be guaranteed.
In petroleum chemical industry, usually pay close attention to the volume that oil product is deposited at the different liquid level place of storage tank.At present, national standard has worked out the volumetric calibration method of relevant vertical type cylinder shape metallic oil tank, as enclosed chi method (GB/T 13235.1-1991), Optical Parametric than telemetry (GB/T 13235.3-1995) in collimation method (GB/T 13235.2-1991) and photoelectricity.Above-mentioned several method is all the geometric senses such as girth, angle by measuring the different girth sheets of cylindrical oil tank, is then undertaken calculating and then obtaining oil tank volume list by measured data.Certainly, have also appeared in petrochemical industry the method that the modern Global Positioning System (GPS) real time dynamic differential location technology of application carries out volume measurement and demarcation.
In sum, Large Copacity storage tank (case) volume measurement is applied at present and scaling method has the following disadvantages: (1) detecting sensor cannot verify in real time, and measurement result uncertainty cannot ensure; (2) scope of application is little, is only applicable to the container of some fixing occasion or fixed profile; (3) operating process is complicated, requires higher to the skill level of operating personnel.
Summary of the invention
The object of the present invention is to provide a kind of strong adaptability, simple to operate, measuring accuracy high be applicable to the on-the-spot volume measurement system of Large Copacity storage tank and scaling method.
Realize the technical scheme of the object of the invention: a kind of Large Copacity tank volume detection system, it comprises storage tank one, storage tank two and storage tank three; The bottom of storage tank one, storage tank two and storage tank three all arranges water inlet and outlet pipeline, and storage tank one, storage tank two and storage tank three top are all provided with liquid level gauge simultaneously;
Wherein, the outlet pipeline of the outlet pipeline of storage tank one, the outlet pipeline of storage tank two and storage tank three is all connected to the entrance of circularly-supercharged discharge pump group; The outlet of circularly-supercharged discharge pump group is connected to the entrance of stable-pressure device by pipeline, the outlet of stable-pressure device is connected to the entrance of standard scale flowmeter group by pipeline, and the outlet of standard scale flowmeter group is connected to the entrance of flow regulator by pipeline; The export pipeline of flow regulator is divided into four branch roads, connects the inlet pipeline of the inlet pipeline of storage tank one, the inlet pipeline of storage tank two and storage tank three respectively, and an other road is connected to flowmeter verification standard set-up; Flowmeter verification standard set-up arranges independently liquid origin system, and the outlet pipeline in its liquid source connects the entrance of circularly-supercharged discharge pump group.
A kind of Large Copacity tank volume detection system as above, the circularly-supercharged discharge pump group described in it comprises 2 ~ 3 centrifugal blower-pumps and composes in parallel, and configures corresponding by-pass valve control.
A kind of Large Copacity tank volume detection system as above, the standard scale flowmeter group described in it comprises 2 or multiple stage flowmeter composes in parallel, and arranges pressure, thermometric instrument, and respective pulses counting assembly all established by every platform flowmeter; 1 or the use of multiple stage flowmeter is realized by the switch of by-pass valve control.
A kind of Large Copacity tank volume detection system as above, the stable-pressure device described in it adopts buffer tank.
A kind of Large Copacity tank volume detection system as above, the flow regulator described in it adopts control valve.
A kind of Large Copacity tank volume detection system as above, the outlet pipeline of the inlet pipeline of the outlet pipeline of the outlet pipeline of the storage tank one described in it, the outlet pipeline of storage tank two, storage tank three, the inlet pipeline of storage tank one, storage tank two, the inlet pipeline of storage tank three, flowmeter verification standard set-up, the inlet pipeline of flowmeter verification standard set-up all arrange by-pass valve control.
The Large Copacity tank strapping method of any one Large Copacity tank volume detection system of the present invention, it comprises the steps:
A (), when storage tank two is by demarcation object, storage tank one and storage tank three provide liquid source; When storage tank one is for demarcating object, storage tank two and storage tank three provide liquid source; When storage tank three is for demarcating object, storage tank one and storage tank two provide liquid source; When demarcating beginning, be empty by the liquid storage demarcating object storage tank, guarantee that the liquid storage capacity sum of all the other 2 storage tanks is greater than by demarcation subject volume value simultaneously;
B () starts circularly-supercharged discharge pump group, control each by-pass valve control and open and close, and makes the liquid medium in liquid source flow through circularly-supercharged discharge pump group, stable-pressure device, standard scale flowmeter group and flowmeter verification standard set-up successively; When flowmeter verification standard set-up liquid source liquid storage situation meets the demands, start circular flow, then according to meter proof code, flow value verification is carried out to standard scale flowmeter group;
C () carries out liquid level zero setting to by demarcation object storage tank; Control each by-pass valve control to open and close, after making the liquid medium in liquid source flow through circularly-supercharged discharge pump group, stable-pressure device, standard scale flowmeter group successively, enter storage tank to be calibrated; In calibration process, flow value verify in selecting step (b) is annotated, and generates that tank volume is corresponding with liquid level to be shown, until end one is by the volume measurement of demarcation object storage tank.
A kind of Large Copacity tank strapping method as above, the storage tank one described in it, storage tank two and storage tank three volume are 100 ~ 1000m 3.
Effect of the present invention is: Large Copacity tank volume detection system of the present invention and scaling method, its strong adaptability, measuring error is little.Connect control model owing to introducing the parallel/serial of flowmeter, the flow metering capability of system is greatly improved.Based on the feature of system, the actuating medium that volume measurement process uses is exactly actual storage medium, so not only can gather materials on the spot, also have guarantee effect to the accuracy of volumetric calibration.In addition, owing to adopting flow rate metering method, tank body can be traditional cylindrical, ball-type, horizontal etc., can also be any form needing particular design according to scene.The present invention is not only applicable to volume Site Detection and the demarcation of rocket fuel tank, is applicable to the establishment of petroleum chemical industry large-scale storage tank loading table simultaneously, is specially adapted to require high occasion to demarcation uncertainty.
Accompanying drawing explanation
Fig. 1 is a kind of Large Copacity tank volume detection system schematic diagram of the present invention.
In figure: 1. storage tank one; 2. circularly-supercharged discharge pump group; 3. stable-pressure device; 4. standard scale flowmeter group; 5. flowmeter verification standard set-up; 6. circulation storage tank; 7. flow regulator; 8. storage tank two; 9. storage tank three.
Embodiment
Below in conjunction with accompanying drawing and instantiation, a kind of Large Copacity tank volume detection system of the present invention and scaling method are further described.
Embodiment 1
As shown in Figure 1, a kind of Large Copacity tank volume detection system of the present invention, it comprises three storage tanks, is respectively storage tank 1, storage tank 28 and storage tank 39; Described storage tank 1, storage tank 28 and storage tank 39 volume are 100 ~ 1000m 3(in theory can arbitrary size).Storage tank 1, storage tank 28 and storage tank 39 top are all provided with liquid level gauge.
Storage tank 1, storage tank 28 are all connected on the right side of outlet pipeline, bottom with the lower left side of storage tank 39 and all connect inlet pipeline;
Wherein, the outlet pipeline of the outlet pipeline of storage tank 1, the outlet pipeline of storage tank 28 and storage tank 39 is all connected to the entrance of circularly-supercharged discharge pump group 2;
The outlet of circularly-supercharged discharge pump group 2 connects the entrance of stable-pressure device 3 by pipeline, and the outlet of stable-pressure device 3 is by the entrance of circuit connector standards meter flow-meter group 4, and the outlet of standard scale flowmeter group 4 is by the entrance of pipeline connection traffic regulating device 7;
The export pipeline of flow regulator 7 is divided into four branch roads to connect the inlet pipeline of the inlet pipeline of storage tank 1, the inlet pipeline of storage tank 28 and the inlet pipeline of storage tank 39 and flowmeter verification standard set-up 5 respectively; Flowmeter verification standard set-up 5 arranges independently liquid origin system, and its outlet pipeline connects the entrance of circularly-supercharged discharge pump group 2.
Above-mentioned circularly-supercharged discharge pump group 2 comprises 2 (or 3) centrifugal blower-pumps and composes in parallel, and configures corresponding by-pass valve control.
Above-mentioned standard scale flowmeter group 4 comprises 2 (or multiple stage) flowmeters and composes in parallel, and arrange pressure, thermometric instrument, respective pulses counting assembly all established by every platform flowmeter; 1 or the use of multiple stage flowmeter is realized by the switch of by-pass valve control.
Above-mentioned stable-pressure device 3 adopts buffer tank.Buffer tank useful volume is determined according to system maximum flow, its useful volume generally in peak flow values (by cubic meter/time) 1/50 (or 1/40) be advisable.
Above-mentioned flow regulator 7 adopts variable valve.
The outlet pipeline of the inlet pipeline of the outlet pipeline of the outlet pipeline of above-mentioned storage tank 1, the outlet pipeline of storage tank 28, storage tank 39, the inlet pipeline of storage tank 1, storage tank 28, the inlet pipeline of storage tank 39, flowmeter verification standard set-up 5, the inlet pipeline of flowmeter verification standard set-up 5 all arrange by-pass valve control.
Embodiment 2
A kind of Large Copacity tank strapping method adopting Large Copacity tank volume detection system described in embodiment 1 of the present invention, it comprises the steps:
A (), when storage tank 28 is by demarcation object, storage tank 1 and storage tank 39 provide liquid source; When storage tank 1 is for demarcating object, storage tank 28 and storage tank 39 provide liquid source; When storage tank 39 is for demarcating object, storage tank 1 and storage tank 28 provide liquid source;
When demarcating startup, be empty by the liquid storage demarcating object storage tank, guarantee that the liquid storage capacity sum of all the other 2 storage tanks is greater than by demarcation subject volume value simultaneously.
Liquid medium is as industrial chemicals such as oil or water.
B () starts circularly-supercharged discharge pump group 2, control each by-pass valve control and open and close, and makes the liquid medium in liquid source flow through circularly-supercharged discharge pump group 2, stable-pressure device 3, standard scale flowmeter group 4 and flowmeter verification standard set-up 5 successively; When flowmeter verification standard set-up 5 liquid source liquid storage situation meets the demands, start circular flow, then according to meter proof code (or calibrating standard), flow value verification is carried out to standard scale flowmeter group;
C () carries out liquid level zero setting to by demarcation object storage tank; Control each by-pass valve control to open and close, after making the liquid medium in liquid source flow through circularly-supercharged discharge pump group 2, stable-pressure device 3, standard scale flowmeter group 4 successively, enter storage tank to be calibrated; In calibration process, flow value verify in selecting step (b) is annotated, and generates that tank volume is corresponding with liquid level to be shown, until end one is by the volume measurement of demarcation object storage tank.
The present invention long-rangely can carry out real-time control treatment to state values such as field control valve, pump, flow, pressure, liquid levels, is universal industrial control technology.The present invention has strong adaptability, the feature that measuring error is little, is not only applicable to the volumetric calibration of Rocket tank, and the mutual verification between the on-the-spot multiple storage tank of petrochemical industry of being more convenient for detects, and has very strong practical value.

Claims (8)

1. a Large Copacity tank volume detection system, is characterized in that: this system comprises storage tank one (1), storage tank two (8) and storage tank three (9); The bottom of storage tank one (1), storage tank two (8) and storage tank three (9) all arranges water inlet and outlet pipeline, and storage tank one (1), storage tank two (8) and storage tank three (9) top are all provided with liquid level gauge simultaneously;
Wherein, the outlet pipeline of the outlet pipeline of storage tank one (1), the outlet pipeline of storage tank two (8) and storage tank three (9) is all connected to the entrance of circularly-supercharged discharge pump group (2);
The outlet of circularly-supercharged discharge pump group (2) is connected to the entrance of stable-pressure device (3) by pipeline, the outlet of stable-pressure device (3) is connected to the entrance of standard scale flowmeter group (4) by pipeline, the outlet of standard scale flowmeter group (4) is connected to the entrance of flow regulator (7) by pipeline;
The export pipeline of flow regulator (7) is divided into four branch roads, connect the inlet pipeline of the inlet pipeline of storage tank one (1), the inlet pipeline of storage tank two (8) and storage tank three (9) respectively, an other road is connected to flowmeter verification standard set-up (5); Flowmeter verification standard set-up (5) arranges independently liquid origin system, and the outlet pipeline in its liquid source connects the entrance of circularly-supercharged discharge pump group (2).
2. a kind of Large Copacity tank volume detection system according to claim 1, is characterized in that: described circularly-supercharged discharge pump group (2) comprises 2 ~ 3 centrifugal blower-pumps and composes in parallel, and configures corresponding by-pass valve control.
3. a kind of Large Copacity tank volume detection system according to claim 1, it is characterized in that: described standard scale flowmeter group (4) comprises 2 or multiple stage flowmeter composes in parallel, arrange pressure, thermometric instrument, respective pulses counting assembly all established by every platform flowmeter; 1 or the use of multiple stage flowmeter is realized by the switch of by-pass valve control.
4. a kind of Large Copacity tank volume detection system according to claim 1, is characterized in that: described stable-pressure device (3) adopts buffer tank.
5. a kind of Large Copacity tank volume detection system according to claim 1, is characterized in that: described flow regulator (7) adopts control valve.
6. a kind of Large Copacity tank volume detection system according to claim 1, is characterized in that: the outlet pipeline of the inlet pipeline of the outlet pipeline of the outlet pipeline of described storage tank one (1), the outlet pipeline of storage tank two (8), storage tank three (9), the inlet pipeline of storage tank one (1), storage tank two (8), the inlet pipeline of storage tank three (9), flowmeter verification standard set-up (5), the inlet pipeline of flowmeter verification standard set-up (5) all arrange by-pass valve control.
7. adopt a Large Copacity tank strapping method for any one Large Copacity tank volume detection system described in claim 1 to 6, it is characterized in that, this scaling method comprises the steps:
A (), when storage tank two (8) is by demarcation object, storage tank one (1) and storage tank three (9) provide liquid source; When storage tank one (1) is for demarcating object, storage tank two (8) and storage tank three (9) provide liquid source; When storage tank three (9) is for demarcating object, storage tank one (1) and storage tank two (8) provide liquid source;
When demarcating beginning, be empty by the liquid storage demarcating object storage tank, guarantee that the liquid storage capacity sum of all the other 2 storage tanks is greater than by demarcation subject volume value simultaneously;
B () starts circularly-supercharged discharge pump group (2), control each by-pass valve control to open and close, make the liquid medium in liquid source flow through circularly-supercharged discharge pump group (2), stable-pressure device (3), standard scale flowmeter group (4) and flowmeter verification standard set-up (5) successively; When flowmeter verification standard set-up (5) liquid source liquid storage situation meets the demands, start circular flow, then according to meter proof code, flow value verification is carried out to standard scale flowmeter group;
C () carries out liquid level zero setting to by demarcation object storage tank; Control each by-pass valve control to open and close, after making the liquid medium in liquid source flow through circularly-supercharged discharge pump group (2), stable-pressure device (3), standard scale flowmeter group (4) successively, enter storage tank to be calibrated; In calibration process, flow value verify in selecting step (b) is annotated, and generates that tank volume is corresponding with liquid level to be shown, until end one is by the volume measurement of demarcation object storage tank.
8. a kind of Large Copacity tank strapping method according to claim 7, is characterized in that, described storage tank one (1), storage tank two (8) and storage tank three (9) volume are 100 ~ 1000m 3.
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CN109540267A (en) * 2018-11-02 2019-03-29 广州协堡建材有限公司 A kind of liquidometer measuring tank calibration equipment and its method
CN110274668A (en) * 2019-06-14 2019-09-24 江苏中有信科技有限公司 A kind of tank fill level scaling method and liquid level calibration tool

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CN110274668A (en) * 2019-06-14 2019-09-24 江苏中有信科技有限公司 A kind of tank fill level scaling method and liquid level calibration tool

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