CN109534271A - Flow conductivity test in can automatic liquid supply intermediate receptacle and its application method - Google Patents
Flow conductivity test in can automatic liquid supply intermediate receptacle and its application method Download PDFInfo
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- CN109534271A CN109534271A CN201811377943.0A CN201811377943A CN109534271A CN 109534271 A CN109534271 A CN 109534271A CN 201811377943 A CN201811377943 A CN 201811377943A CN 109534271 A CN109534271 A CN 109534271A
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- Prior art keywords
- piston
- solenoid valve
- bit triplet
- interface
- triplet solenoid
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- 239000007788 liquid Substances 0.000 title claims abstract description 67
- 238000012360 testing method Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000004821 distillation Methods 0.000 claims abstract description 22
- 239000012530 fluid Substances 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 238000002474 experimental method Methods 0.000 claims abstract description 16
- 238000001802 infusion Methods 0.000 claims description 8
- 239000012153 distilled water Substances 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 3
- 101100298222 Caenorhabditis elegans pot-1 gene Proteins 0.000 description 5
- 230000000630 rising effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/02—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/74—Large containers having means for heating, cooling, aerating or other conditioning of contents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/06—Details or accessories
- B67D7/08—Arrangements of devices for controlling, indicating, metering or registering quantity or price of liquid transferred
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a kind of flow conductivity test in can automatic liquid supply intermediate receptacle and its application method, including distilling water pot, lp piston, fluid reservoir and PLC control system, the upper and lower ends of the lp piston are respectively equipped with two-bit triplet solenoid valve and lower two-bit triplet solenoid valve, the feed liquor interface of the upper two-bit triplet solenoid valve is connect by pipeline with fluid reservoir, the liquid interface pipeline that goes out of the upper two-bit triplet solenoid valve is equipped with pressure sensor, the feed liquor interface of the lower two-bit triplet solenoid valve and out liquid interface pass through pipeline and connect with distillation water pot, pipeline between the feed liquor interface and distillation water pot is equipped with constant-flux pump, the shell of the lp piston is equipped with heating mantle, the upper inside wall of the experiment liquid chamber is equipped with piston upper contact and temperature sensor, the inner wall lower of the distillation water chamber is equipped with piston lower contact.The present invention can not only realize the function of automatic liquid supply, but also have many advantages, such as that control precision is high, safe and efficient.
Description
Technical field
The present invention relates to shale gas Development Support agent flow conductivity experimental fields, and in particular in a kind of test of flow conductivity
Can automatic liquid supply intermediate receptacle and its application method.
Background technique
The experiment of proppant flow conductivity will mainly be stored using constant-flux pump as one of most basic experiment of hydraulic fracturing
It is pumped out in the Fluid simulation formation condition of intermediate receptacle, flow through the diversion chamber of filling proppant and tests volume of data, obtained
The flow conductivity of proppant, thus intermediate receptacle it is safe and stable, be efficiently particularly important.It is intermediate used at this stage
The functions such as heating, stirring, visible-liquid-level height, test liquid viscosity can be achieved by a series of improve in container, but due in
Between container volume it is limited, carry out long-term flow conductivity experiment generally requires 3 days or more, need often to open intermediate receptacle upper cover weight
New addition experimental liquid, and operating process is cumbersome, to the serious wear of upper cover and valve, reduce leakproofness and service life and
Artificial fluid infusion is relatively easy to occur to make mistakes to lead to the failure of an experiment.
Summary of the invention
The purpose of the invention is to overcome the shortcomings of above-mentioned background technique, providing can be automatic in a kind of test of flow conductivity
The intermediate receptacle and its application method of fluid infusion.
In order to achieve the goal above, in a kind of flow conductivity test provided by the invention can automatic liquid supply intermediate receptacle,
Two three are respectively equipped with including distillation water pot, lp piston, fluid reservoir and PLC control system, the upper and lower ends of the lp piston
The feed liquor interface of three-way electromagnetic valve and lower two-bit triplet solenoid valve, the upper two-bit triplet solenoid valve is connected by pipeline and fluid reservoir
It connects, the liquid interface out of the upper two-bit triplet solenoid valve is used to connect with diversion chamber by pipeline and connecting line is equipped with pressure
Sensor, the feed liquor interface of the lower two-bit triplet solenoid valve and out liquid interface pass through pipeline and connect with distillation water pot, described
Pipeline between feed liquor interface and distillation water pot is equipped with constant-flux pump, and the shell of the lp piston is equipped with heating mantle, the work
Plug tank in by piston is divided into experiment liquid chamber and distillation water chamber, it is described experiment liquid chamber upper inside wall be equipped with piston upper contact with
The inner wall lower of temperature sensor, the distillation water chamber is equipped with piston lower contact, the upper two-bit triplet solenoid valve, two three lower
Three-way electromagnetic valve, pressure sensor, constant-flux pump, heating mantle, piston upper contact, temperature sensor and piston lower contact pass through route
It is connect with PLC control system.
In a kind of flow conductivity test provided by the invention can automatic liquid supply intermediate receptacle application method, including it is following
Step:
Step 1, PCL control system to be opened, experimental temperature is set, system control heating mantle heats lp piston, to
After experimental liquid reaches set temperature, constant-flux pump empirical flow is set, constant-flux pump is opened in system control, by lower two-bit triplet electromagnetism
Vavle switching to feed liquor interface opens out liquid interface closed state, and upper two-bit triplet solenoid valve is switched to feed liquor interface and closes out liquid
Interface open state, at this time distilled water by constant-flux pump enter distillation water chamber push piston move up driving experimental liquid.If the mistake
When occurring pressure in journey and steeply rising more than safe pressure, PCL control system, which will directly control experiment, to be terminated, and starts to alarm.
Step 2, when piston slides into piston upper contact, PCL control system closes constant-flux pump, by lower two-bit triplet electromagnetism
Vavle switching to feed liquor interface closes out liquid interface open state, and upper two-bit triplet solenoid valve is switched to feed liquor interface and opens out liquid
Interface closed state, experimental liquid enters lp piston in fluid reservoir at this time, starts fluid infusion, lp piston lower part distilled water will be by going out liquid
Interface flows into distillation water pot by the road；
Step 3, when fluid infusion, piston is snapped down to piston lower contact, PCL control system cuts upper two-bit triplet solenoid valve
It shifts to feed liquor interface and closes out liquid interface open state, lower two-bit triplet solenoid valve is switched into feed liquor interface and opens out liquid interface
Closed state；
Step 4, after experimental liquid supplement, monitoring temperature signal is transmitted to PCL control system by temperature sensor,
PLC control system controls heating mantle to lp piston continuous heating, and when temperature reaches experiment set temperature, PCL control system will
Constant-flux pump is opened in control, continues to test.
Technical solution provided by the invention has the benefit that
The present invention can not only realize the function of automatic liquid supply, but also have many advantages, such as that control precision is high, safe and efficient.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is PLC control system control method flow chart of the invention.
In figure: distillation water pot 1, lp piston 2, piston 2a test liquid chamber 2b, distill water chamber 2c, piston upper contact 2d, temperature
Sensor 2e, piston lower contact 2f, fluid reservoir 3, PLC control system 4, upper two-bit triplet solenoid valve 5, feed liquor interface 5a, out liquid
Interface 5b, lower two-bit triplet solenoid valve 6, feed liquor interface 6a, out liquid interface 6b, constant-flux pump 7, heating mantle 8.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and embodiments.
In a kind of flow conductivity test as shown in Figure 1 can automatic liquid supply intermediate receptacle, including distillation water pot 1, piston
Tank 2, fluid reservoir 3 and PLC control system 4, the upper and lower ends of the lp piston 2 are respectively equipped with two-bit triplet solenoid valve 5 under
Two-bit triplet solenoid valve 6, the feed liquor interface 5a of the upper two-bit triplet solenoid valve 5 are connect by pipeline with fluid reservoir 3, it is described on
The liquid interface 5b out of two-bit triplet solenoid valve 5 is used to connect with diversion chamber by pipeline and connecting line is equipped with pressure sensor
5c, the feed liquor interface 6a of the lower two-bit triplet solenoid valve 6 and out liquid interface 6b pass through pipeline and connect with distillation water pot 1, institute
The pipeline stating feed liquor interface 6a and distilling between water pot 1 is equipped with constant-flux pump 7, and the shell of the lp piston 2 is equipped with heating mantle
8, the lp piston 2 is interior to be divided into experiment liquid chamber 2b by piston 2a and distills water chamber 2c, on the inner wall of the experiment liquid chamber 2b
Portion is equipped with piston upper contact 2d and temperature sensor 2e, and the inner wall lower of the distillation water chamber 2c is equipped with piston lower contact 2f, institute
State two-bit triplet solenoid valve 5, lower two-bit triplet solenoid valve 6, pressure sensor 5c, constant-flux pump 7, heating mantle 8, piston upper contact
2d, temperature sensor 2e and piston lower contact 2f pass through route and connect with PLC control system 4.
Flow conductivity test in can automatic liquid supply intermediate receptacle application method, comprising the following steps:
Step 1, PCL control system 4 to be opened, experimental temperature is set, system control heating mantle 8 heats lp piston 2,
After experimental liquid reaches set temperature, 7 empirical flow of constant-flux pump is set, constant-flux pump 7 is opened in system control, by lower two-bit triplet
Solenoid valve 6 switches to feed liquor interface 6a and opens out liquid interface 6b closed state, and upper two-bit triplet solenoid valve 5 is switched to feed liquor and is connect
Mouth 5a closes out liquid interface 5b open state, and distilled water enters distillation water chamber 2c promotion piston 2a by constant-flux pump 7 and moves up at this time
Drive experimental liquid.If should during when there is pressure and steeply rising more than safe pressure, PCL control system 4 will directly control
Experiment terminates, and starts to alarm.
Step 2, when piston 2a slides into piston upper contact 2d, PCL control system 4 closes constant-flux pump 7, by lower two three
Three-way electromagnetic valve 6 switches to feed liquor interface 6a and closes out liquid interface 6b open state, and upper two-bit triplet solenoid valve 5 is switched to feed liquor
Interface 5a opens out liquid interface 5b closed state, and experimental liquid enters lp piston 2 in fluid reservoir 3 at this time, starts fluid infusion, lp piston
2 lower part distilled water will flow by the road distillation water pot 1 by going out liquid interface 6b；
Step 3, when fluid infusion, piston 2a is snapped down to piston lower contact 2f, PCL control system 4 is by upper two-bit triplet electromagnetism
Valve 5 switches to feed liquor interface 5a and closes out liquid interface 5b open state, and lower two-bit triplet solenoid valve 6 is switched to feed liquor interface 6a
Open out liquid interface 6b closed state；
Step 4, after experimental liquid supplement, monitoring temperature signal is transmitted to PCL control system by temperature sensor 2e
4, PLC control system 4 controls heating mantle 8 to 2 continuous heating of lp piston, when temperature reaches experiment set temperature, PCL control system
Control is opened constant-flux pump 7 by system 4, continues to test.
Other unspecified parts belong to the prior art.
Claims (2)
1. flow conductivity test in can automatic liquid supply intermediate receptacle, including distillation water pot (1), lp piston (2), fluid reservoir (3)
With PLC control system (4), it is characterised in that: the upper and lower ends of the lp piston (2) are respectively equipped with two-bit triplet solenoid valve
(5) and lower two-bit triplet solenoid valve (6), the feed liquor interface (5a) of the upper two-bit triplet solenoid valve (5) pass through pipeline and liquid storage
Tank (3) connection, the upper two-bit triplet solenoid valve (5) go out liquid interface (5b) by pipeline for connecting and connecting with diversion chamber
Pipeline is equipped with pressure sensor (5c), the feed liquor interface (6a) of the lower two-bit triplet solenoid valve (6) and out liquid interface (6b)
It is connect by pipeline with distillation water pot (1), the pipeline between the feed liquor interface (6a) and distillation water pot (1) is equipped with advection
It pumps (7), the shell of the lp piston (2) is equipped with heating mantle (8), is divided into reality by piston (2a) in the lp piston (2)
Liquid chamber (2b) and distillation water chamber (2c) are tested, the upper inside wall of experiment liquid chamber (2b) is equipped with piston upper contact (2d) and temperature passes
The inner wall lower of sensor (2e), distillation water chamber (2c) is equipped with piston lower contact (2f), the upper two-bit triplet solenoid valve
(5), lower two-bit triplet solenoid valve (6), pressure sensor (5c), constant-flux pump (7), heating mantle (8), piston upper contact (2d), temperature
Degree sensor (2e) and piston lower contact (2f) are connect by route with PLC control system (4).
2. using in the test of flow conductivity described in claim 1 can automatic liquid supply intermediate receptacle method, which is characterized in that
The following steps are included:
Step 1, PCL control system (4) are opened, sets experimental temperature, system control heating mantle (8) adds lp piston (2)
Heat, after experimental liquid reaches set temperature, set constant-flux pump (7) empirical flow, system control open constant-flux pump (7), will under
Two-bit triplet solenoid valve (6) switches to feed liquor interface (6a) and opens out liquid interface (6b) closed state, by upper two-bit triplet electromagnetism
Valve (5) switches to feed liquor interface (5a) and closes out liquid interface (5b) open state, and distilled water is entered by constant-flux pump (7) and steamed at this time
Distilled water room (2c) pushes piston (2a) to move up driving experimental liquid.If pressure should occur in the process to steeply rise more than safe pressure
When, PCL control system (4), which will directly control experiment, to be terminated, and starts to alarm.
Step 2, when piston (2a) slides into piston upper contact (2d), PCL control system (4) closes constant-flux pump (7), by lower two
Position-3-way solenoid valve (6) switches to feed liquor interface (6a) and closes out liquid interface (6b) open state, by upper two-bit triplet solenoid valve
(5) it switches to feed liquor interface (5a) and opens out liquid interface (5b) closed state, fluid reservoir (3) interior experimental liquid enters piston at this time
Tank (2), starts fluid infusion, and lp piston (2) lower part distilled water will flow by the road distillation water pot (1) by going out liquid interface (6b)；
Step 3, when fluid infusion, piston (2a) is snapped down to piston lower contact (2f), PCL control system (4) is electric by upper two-bit triplet
Magnet valve (5) switches to feed liquor interface (5a) and closes out liquid interface (5b) open state, and lower two-bit triplet solenoid valve (6) is switched to
Feed liquor interface (6a) opens out liquid interface (6b) closed state；
Step 4, after experimental liquid supplement, monitoring temperature signal is transmitted to PCL control system by temperature sensor (2e)
(4), PLC control system (4) control heating mantle (8) is to lp piston (2) continuous heating, when temperature reaches experiment set temperature,
Control is opened constant-flux pump (7) by PCL control system (4), continues to test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811377943.0A CN109534271A (en) | 2018-11-19 | 2018-11-19 | Flow conductivity test in can automatic liquid supply intermediate receptacle and its application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811377943.0A CN109534271A (en) | 2018-11-19 | 2018-11-19 | Flow conductivity test in can automatic liquid supply intermediate receptacle and its application method |
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| Publication Number | Publication Date |
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| CN109534271A true CN109534271A (en) | 2019-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811377943.0A Pending CN109534271A (en) | 2018-11-19 | 2018-11-19 | Flow conductivity test in can automatic liquid supply intermediate receptacle and its application method |
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| CN (1) | CN109534271A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110713160A (en) * | 2019-10-11 | 2020-01-21 | 中国海洋石油集团有限公司 | Automatic liquid supplementing device and method for piston type intermediate container for displacement |
| CN111804531A (en) * | 2020-07-15 | 2020-10-23 | 浙江锋锂新能源科技有限公司 | Feeding device capable of eliminating pulses and using method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201940407U (en) * | 2010-12-29 | 2011-08-24 | 常州亿晶光电科技有限公司 | Constant volume precise automatic liquid supply device |
| US20120325852A1 (en) * | 2011-06-27 | 2012-12-27 | Prince Castle LLC | Liquid Dispenser with Storage Tanks |
| US20150261089A1 (en) * | 2014-03-13 | 2015-09-17 | Taiwan Semiconductor Manufacturing Co., Ltd. | System and method for supplying and dispensing bubble-free photolithography chemical solutions |
| CN108071364A (en) * | 2016-11-12 | 2018-05-25 | 肖蔚然 | A kind of controllable device of gas well water pumping gas production |
| CN207937451U (en) * | 2018-02-12 | 2018-10-02 | 中国石油天然气股份有限公司 | Reservoir Sensitivity Experimental Device |
| CN207937452U (en) * | 2018-02-12 | 2018-10-02 | 中国石油天然气股份有限公司 | Automatic fluid infusion structure and reservoir sensitivity experimental device with same |
-
2018
- 2018-11-19 CN CN201811377943.0A patent/CN109534271A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201940407U (en) * | 2010-12-29 | 2011-08-24 | 常州亿晶光电科技有限公司 | Constant volume precise automatic liquid supply device |
| US20120325852A1 (en) * | 2011-06-27 | 2012-12-27 | Prince Castle LLC | Liquid Dispenser with Storage Tanks |
| US20150261089A1 (en) * | 2014-03-13 | 2015-09-17 | Taiwan Semiconductor Manufacturing Co., Ltd. | System and method for supplying and dispensing bubble-free photolithography chemical solutions |
| CN108071364A (en) * | 2016-11-12 | 2018-05-25 | 肖蔚然 | A kind of controllable device of gas well water pumping gas production |
| CN207937451U (en) * | 2018-02-12 | 2018-10-02 | 中国石油天然气股份有限公司 | Reservoir Sensitivity Experimental Device |
| CN207937452U (en) * | 2018-02-12 | 2018-10-02 | 中国石油天然气股份有限公司 | Automatic fluid infusion structure and reservoir sensitivity experimental device with same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110713160A (en) * | 2019-10-11 | 2020-01-21 | 中国海洋石油集团有限公司 | Automatic liquid supplementing device and method for piston type intermediate container for displacement |
| CN111804531A (en) * | 2020-07-15 | 2020-10-23 | 浙江锋锂新能源科技有限公司 | Feeding device capable of eliminating pulses and using method thereof |
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| PB01 | Publication | ||
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Application publication date: 20190329 |