CN110201423A - A kind of automatic water cut-off device based on rotary process - Google Patents
A kind of automatic water cut-off device based on rotary process Download PDFInfo
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- CN110201423A CN110201423A CN201910349122.4A CN201910349122A CN110201423A CN 110201423 A CN110201423 A CN 110201423A CN 201910349122 A CN201910349122 A CN 201910349122A CN 110201423 A CN110201423 A CN 110201423A
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0208—Separation of non-miscible liquids by sedimentation
Abstract
The present invention relates to technical field of petrochemical industry more particularly to a kind of automatic water cut-off device based on rotary process, testing principle of the automatic water cut-off device based on liquid viscosity is rotated in detection sample liquid by driving metallic rotator using the motor of constant-torque.In the detection sample liquid of different viscosities, the revolving speed of the metallic rotator of constant-torque can have significant difference, therefore fuel-displaced and water can be accurately distinguished according to revolving speed, realize automatic water-stopping.The water cut-off device can be applicable in a variety of different oil products, and the centrifugal force generated by motor high speed rotation, detection sample liquid is efficiently avoided to be adhered on detection part, to which precision will not be influenced because detecting sample liquid adherency, can longtime running and without periodic cleaning safeguard, and then while water accuracy is cut in raising, reduces and cut water cost.
Description
Technical field
The present invention relates to technical field of petrochemical industry more particularly to a kind of automatic water cut-off devices based on rotary process.
Background technique
In petrochemical enterprise storage tank, either crude oil or product oil all inevitably contain certain moisture, water
Point presence affect oil quality, bring burden to subsequent processing, it is serious or even cause equipment damage and safe thing
Therefore.As diesel oil moisture content height will lead to the corrosion and damage of cylinder, valve, piston.Therefore, oil product is required in oil tank
Middle storage allows deposit of moisture in tank bottom by the water density principle bigger than oil product.After moisture accumulation to a certain extent after,
Tank bottom valve is opened, water is run out, this process is that oil tank cuts water.
Currently, oil tank, which cuts water, artificial and automatic two ways.Manually cutting water is to distinguish oil and water by eyes, is difficult to hold
It the time for closing valve, often results in oil product and misprints drainage system, cause the waste and environmental pollution of oil product, increase enterprise
Operating cost.According to statistics, the water of each diesel fuel tank year excision is about 180 tons, according to manually water mode is cut, wherein oil-containing
About 10 tons.And operator's health is damaged mostly containing harmful substances such as hydrogen sulfide in oil.Therefore, it is set using automatic water-stopping
Standby is the trend of the times that oil tank cuts wetting system type selecting, is the inevitable requirement for keeping the safety in production, protection environment, improving efficiency.
Automatic water-stopping is by mechanically and electrically sub-device identification oil and water, if water then automatically opens valve and cuts water, to water
Middle oil content just closes valve after reaching a certain level immediately.Two major classes are roughly divided into the automatic water cut-off device used at present: floating
Ball-type (mechanical) and grease analysis mode (electronic type).(1) float-ball type: float-ball type works as water using the density contrast principle of oil and water
Floating ball floats when content is high, opens valve, and floating ball falls when oil content is high, closes valve.Float-ball type automatic water cut-off device experienced
Continuous optimization and improvement, obtain relatively broad application in many petroleum chemical enterprises.But floating ball is had found in practical applications
There are many problems for formula water cut-off device, i.e., in running hours, for a long time because the factors such as burn into impurity may be such that water cut-off device drain valve loses
Spirit or lever mechanism burn into are stuck, once stuck failure occurs, it will bring huge direct economic loss, security risk
And the problems such as environmental pollution.(2) grease analysis mode: grease analysis mode is contained using the sensors such as viscosity, density detection grease
Amount, control valve open and close, relatively mechanical safer reliable.Current existing grease analysis mode automatic water cut-off device has super
Sound wave automatic water cut-off device, image detection automatic water cut-off device, fluid column resonance automatic water cut-off device etc..Ultrasonic wave automatic water cut-off device utilizes super
The propagation rate difference of sound wave in water and in oil, ultrasonic wave are incident in liquid through tank skin, and field controller is to upper lower sensor
Ultrasonic echo detect calculate, oil-water interfaces in tank are judged according to upper lower sensor ultrasonic echo time difference.If reached
Or when more than cutting water water level, by certain delay, field controller generation cuts water signal driving and cuts water valve, carries out cutting water.It cuts
During water, if oil-water interfaces stop cutting water lower than system when cutting water water level in tank, water process is cut in completion.This method it is excellent
Point is that sensor is not directly contacted with medium, is not limited by dielectric viscosity, but very high to the required precision of ultrasonic sensor,
And different sensors is selected for different oil product types, versatility is bad.Image detection automatic water cut-off device is according to water
There are the brass tacks of significant difference in terms of color with oil, realize that tank cuts water in real time by digital video image acquisition and processing.But
The program is higher to operating environment requirements, and greasy dirt, dust etc. may influence Image Acquisition and result caused to be distorted, therefore it is applied
Limited to.Fluid column resonance automatic water cut-off device is based on the resonance frequency that at a temperature of certain, each fluid has its intrinsic.
When minor change occurs for the oil content in water, resonance frequency and amplitude can all have greatly changed, so as to correct area
Separate water and oil.It is inaccurate that the shortcomings that this method, is that oil adherency will lead to measurement result on a sensor, it is therefore desirable to sensing
Device is regularly cleaned and is replaced, maintainable to be improved；These are all that those skilled in the art do not expect to see.
Summary of the invention
In view of the above problems, the invention discloses a kind of automatic water cut-off devices based on rotary process, wherein includes:
Oil tank cuts water gauge, cuts water controller, cuts water valve, sampling pump and drainage pipeline；
The water gauge of cutting includes sample liquid sensing chamber, rotor, motor and speed detector；The sample liquid sensing chamber
Inlet is connected to by pipeline with the bottom of the oil tank, and the output torque of the motor is constant, and the rotor protrudes into the sample
Liquid sensing chamber and with the output axis connection of the motor to be rotated under the drive of the motor, the speed detector and institute
Motor connection is stated with the revolving speed for measuring the rotor；
The water valve of cutting is connected between the oil tank and the drainage pipeline；
It is described cut water controller be connected to the speed detector and it is described cut between water valve, according to the rotor
The switch of water valve is cut described in revolving speed control.
Further, the speed detector passes through the output axis connection of shaft coupling and the motor.
Further, the speed detector is speed probe.
Further, the speed detector is encoder.
Further, the rotor is metal bar.
Further, the water controller of cutting is preset with rotary speed threshold value, when the revolving speed of speed probe output is greater than
Or when being equal to the rotary speed threshold value, described cut cuts water valve unlatching described in water controller control；
When the revolving speed of speed probe output is less than the rotary speed threshold value, described cut is cut described in water controller control
Water valve is opened.
Further, the liquid outlet of the sample liquid sensing chamber is connected by sampling pump with the oil tank.
Further, the water controller of cutting is connect with the sampling pump.
Further, fitness machine envelope is additionally provided on the output shaft of the motor.
Further, the material of the fitness machine envelope is rubber.
Compared with prior art, foregoing invention is with the following advantages or beneficial effects:
One, compared with existing " float-ball type " automatic water cut-off device, this water cut-off device detects grease using the rotation of metallic rotator
Content, control valve open and close, and do not deposit the stuck failure of mechanical structure, safer reliable.
Two, compared with existing grease analysis mode water cut-off device, the centrifugal force that this water cut-off device relies on motor high speed rotation to generate,
Effectively oil liquid can be avoided to be adhered on metallic rotator, longtime running will not influence precision because oil liquid adheres to, and be not necessarily to periodic cleaning
Maintenance.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, the present invention and its feature, outer
Shape and advantage will become more apparent.Identical label indicates identical part in all the attached drawings.Not can according to than
Example draws attached drawing, it is preferred that emphasis is shows the gist of the present invention.
Fig. 1 is the structural schematic diagram that water gauge is cut in the embodiment of the present invention；
The structural schematic diagram of automatic water cut-off device in Fig. 2 embodiment of the present invention based on rotary process；
Fig. 3 is the work flow diagram that water controller is cut in the embodiment of the present invention.
Specific embodiment
The present invention is further illustrated with specific embodiment with reference to the accompanying drawing, but not as limit of the invention
It is fixed.
If Fig. 1~3 show, the present embodiment is related to a kind of automatic water cut-off device based on rotary process, which can be used for
Oil tank cuts water；Specifically, the automatic water cut-off device includes: oil tank 5, cuts water gauge 1, cut water controller 2, cut water valve 3, sampling pump
4 and drainage pipeline 6.
It is stored with aqueous oil plant in above-mentioned oil tank 5, which is crude oil or fuel oil etc., since the density of water is greater than oil
Density, therefore after precipitating, water can be deposited on the bottom of oil tank 5.
It is above-mentioned cut water gauge 1 include sample liquid sensing chamber 11, metallic rotator 12 (metallic rotator 12 can be metal bar),
Motor 15, shaft coupling 16 and speed detector 17；The inlet of the sample liquid sensing chamber 11 is connected by the bottom of pipeline and oil tank 5
Logical, under the action of static pressure, the liquid (liquid is water, it is also possible to including oil) for being deposited in 5 bottom of oil tank can be pressed into sample
Liquid sensing chamber 11 and detected as detection sample liquid, the liquid outlet of the sample liquid sensing chamber 11 is connected by sampling pump 4 with oil tank 5
It is logical, so that sampling pump 4 can constantly extract sample from sample liquid sensing chamber 11 returns to oil tank 5, and then ensure that sample liquid detects
Sample in room 11 is consistent with the characteristics of liquids of 5 bottom of oil tank.Above-mentioned motor 15 exports constant torque, and the motor 15 is defeated
It is additionally provided with fitness machine envelope 14 on shaft 13, to prevent the detection sample liquid of high-speed rotation from overflowing, and then influences the work of motor 15；
Above-mentioned metallic rotator 12 protrudes into sample liquid sensing chamber 11 and connect with the output shaft of motor 15 13 to examine under the drive of motor 15
It is rotated in sample measuring liquid；Above-mentioned speed detector 17 is connect with motor 15 by shaft coupling 16 for measuring metallic rotator 12
Revolving speed, i.e. motor 15 are rotated in the detection sample liquid of sample liquid sensing chamber 11 with constant torque drive metallic rotator 12, due to electricity
The revolving speed of machine 15 is related with the power of 15 output torque of motor and motor 15, in the case where torque and constant power, motor
15 invariablenes turning speed, and then theoretically in the case where metallic rotator 12 is not by any resistance, the revolving speed of metallic rotator 12 is also permanent
It is fixed, however the viscosity of the detection sample liquid of sample liquid sensing chamber 11 inevitably has an impact the revolving speed of metallic rotator 12, it is many
Well known, the viscosity differences of water and oil are very big, and the viscosity of pure water is generally 1 centipoise, and the viscosity of machine oil is about 80 centipoises,
Therefore there were significant differences for the viscosity resistance of water and oil.When Dang Shui and oil form mixture, viscosity resistance can be with the increasing of oil content
Adduction correspondingly becomes larger, therefore the revolving speed of metallic rotator 12 can increase with the oil content for detecting sample liquid in sample liquid sensing chamber 11
And become smaller, therefore fuel-displaced and water can be accurately distinguished according to the revolving speed of metallic rotator 12, and since metallic rotator 12 is connected to
On the output shaft 13 of motor 15, speed detector 17 is connect by shaft coupling 16 with motor 15, therefore motor 15 can pass through
The revolving speed of metallic rotator 12 is transmitted to speed detector 17 by shaft coupling 16.
In an embodiment of the present invention, above-mentioned water valve 3 of cutting is connected between oil tank 5 and drainage pipeline 6, specifically, the row
Waterpipe 6 cuts the opening of water valve 3,5 He of oil tank by cutting on the pipeline that water valve 3 is connected between oil tank 5 and sample liquid sensing chamber 11
Drainage pipeline 6 is connected to so that the liquid of 5 bottom of oil tank to be discharged into drainage pipeline 6, cuts the closing of water valve 3, oil tank 5 and drainage pipeline
It is not connected between 6, the liquid of 5 bottom of oil tank can not be discharged into drainage pipeline 6；Above-mentioned water controller 2 of cutting is connected to revolving speed inspection
It surveys device 17 and cuts between water valve 3, to cut the switch of water valve 3 according to the control of the revolving speed of metallic rotator 12, here, be worth mentioning
It is, it is according to the present invention to cut water controller 2 method of switch of water valve 3 and soft is cut according to the control of the revolving speed of metallic rotator 12
Method well-known to those skilled in the art and software flow can be used in part process；Specifically, in the present invention, it is above-mentioned to cut water control
Device 2 processed is preset with rotary speed threshold value (rotary speed threshold value is metallic rotator corresponding revolving speed when oil content reaches preset value), this cuts water
The effect of controller 2 is to read the revolving speed of the output of speed detector 17 and be compared with preset rotary speed threshold value to judge to examine
Whether the oil content in sample measuring liquid is exceeded, and when the revolving speed of speed probe output is greater than or equal to rotary speed threshold value, i.e., sample liquid is examined
The sample liquid viscosity surveyed in room 11 is lower, and oil content is less than or equal to the corresponding oil-containing threshold value of preset rotary speed threshold value, this cuts water control
Device 2 processed judges that detecting sample liquid can be discharged for water, then cuts water controller 2 and issue starting and cut water order, control cut water valve 3 open into
Enter to cut water state, the liquid of 5 bottom of oil tank is discharged into drainage pipeline 6；When the revolving speed that speed detector 17 exports is small
When rotary speed threshold value, i.e., the sample solution viscosity in sample liquid sensing chamber 11 is higher, and oil content is corresponding higher than preset rotary speed threshold value
Oil-containing threshold value, this cut water controller 2 judgement detection sample liquid in oil content it is exceeded, then this cut water controller 2 issue stop cut water
Order, water valve 3 is cut in closing, prevent the liquid of 5 bottom of oil tank is from being discharged into discharge pipe line.
In an embodiment of the present invention, as shown in figure 3, above-mentioned cut 2 workflow of water controller specifically:
Step S1 starts；
The motor 15 of water gauge 1 is cut in step S2, initialization；
Water valve 3 is cut in step S3, initialization；
The motor 15 of water gauge 1 is cut in step S4, starting；
Step S5, whether the motor 15 that water gauge 1 is cut in detection breaks down, if the motor 15 for cutting water gauge 1 is not sent out
Raw failure then directly carries out in next step, if the motor 15 for cutting water gauge 1 breaks down, carrying out step S12；
Step S6 measures the revolving speed for cutting the motor 15 of water gauge 1 by speed detector 17；
Step S7 carries out grease analysis, i.e., by the revolving speed for the motor 15 for cutting water gauge 1 with and cut water controller 2 and preset
Rotary speed threshold value be compared；
Step S8 judges to detect whether the oil content in sample liquid is more than preset value according to comparison result；If being more than preset value,
Then the closing of water valve 3 is cut in setting, if being less than preset value, the unlatching of water valve 3 is cut in setting；
The state of water valve 3 is cut in step S9, readback；
Step S10, the state that water valve 3 is cut in judgement is consistent with analysis result, if this cuts the state of water valve 3 and analysis result
It is consistent, then judges that state is correct, then return step S5；If the state for cutting water valve 3 is not inconsistent with analysis result, state mistake is judged
Accidentally, then it carries out in next step；
Step S11, output alarm；
Step S13, cuts off the power；
Step S14 terminates.
Preferably, above-mentioned speed detector 17 is speed probe or encoder, as long as 17 energy of speed detector
It detects the revolving speed of metallic rotator 12 and exports the revolving speed to switch controller 2.
Preferably, above-mentioned motor 15 is servo motor.
Preferably, the material of above-mentioned fitness machine envelope 14 is rubber, to improve the sealing effect of fitness machine envelope 14.
Preferably, above-mentioned water controller 2 of cutting is connect to control the extraction of sampling pump 4 and detect solution to oil tank with sampling pump 4
Frequency.
To sum up, the invention discloses a kind of automatic water cut-off device based on rotary process, which is based on liquid viscosity
Testing principle, by using constant-torque motor drive metallic rotator, detection sample liquid in rotate.In the inspection of different viscosities
In sample measuring liquid, the revolving speed of the metallic rotator of constant-torque can have significant difference, therefore can accurately be distinguished according to revolving speed fuel-displaced
And water, realize automatic water-stopping.The water cut-off device can be applicable in a variety of different oil products, and the centrifugation generated by motor high speed rotation
Power efficiently avoids detection sample liquid and is adhered on detection part, so that precision will not be influenced because detecting sample liquid adherency, it can
It longtime running and is safeguarded without periodic cleaning, and then while water accuracy is cut in raising, reduces and cut water cost.
It should be appreciated by those skilled in the art that those skilled in the art are combining the prior art and above-described embodiment can be with
Realize change case, this will not be repeated here.Such change case does not affect the essence of the present invention, and it will not be described here.
Presently preferred embodiments of the present invention is described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, devices and structures not described in detail herein should be understood as gives reality with the common mode in this field
It applies；Anyone skilled in the art, without departing from the scope of the technical proposal of the invention, all using the disclosure above
Methods and technical content many possible changes and modifications are made to technical solution of the present invention, or be revised as equivalent variations etc.
Embodiment is imitated, this is not affected the essence of the present invention.Therefore, anything that does not depart from the technical scheme of the invention, foundation
Technical spirit of the invention any simple modifications, equivalents, and modifications made to the above embodiment, still fall within the present invention
In the range of technical solution protection.
Claims (10)
1. a kind of automatic water cut-off device based on rotary process characterized by comprising oil tank, cut water gauge, cut water controller,
Cut water valve and drainage pipeline；
Aqueous oil plant is stored in the oil tank；
The water gauge of cutting includes sample liquid sensing chamber, rotor, motor and speed detector；The feed liquor of the sample liquid sensing chamber
Mouth is connected to by pipeline with the bottom of the oil tank, and the output torque of the motor is constant, and the rotor protrudes into the sample liquid inspection
Survey room and with the output axis connection of the motor to rotate under the drive of the motor, the speed detector and the electricity
Machine is connected with the revolving speed for measuring the rotor；
The water valve of cutting is connected between the oil tank and the drainage pipeline；
It is described cut water controller be connected to the speed detector and it is described cut between water valve, according to the revolving speed of the rotor
The switch of water valve is cut described in control.
2. as described in claim 1 based on the automatic water cut-off device of rotary process, which is characterized in that the speed detector passes through
The output axis connection of shaft coupling and the motor.
3. as described in claim 1 based on the automatic water cut-off device of rotary process, which is characterized in that the speed detector is to turn
Fast sensor.
4. as described in claim 1 based on the automatic water cut-off device of rotary process, which is characterized in that the speed detector is to compile
Code device.
5. as described in claim 1 based on the automatic water cut-off device of rotary process, which is characterized in that the rotor is metallic rotator.
6. as described in claim 1 based on the automatic water cut-off device of rotary process, which is characterized in that the water controller of cutting is preset with
Rotary speed threshold value, it is described to cut water controller control when the revolving speed of speed probe output is greater than or equal to the rotary speed threshold value
Water valve unlatching is cut described in system；
When the revolving speed of speed probe output is less than the rotary speed threshold value, described cut cuts water valve described in water controller control
It opens.
7. as described in claim 1 based on the automatic water cut-off device of rotary process, which is characterized in that the sample liquid sensing chamber goes out liquid
Mouth is connected by sampling pump with the oil tank.
8. as described in claim 1 based on the automatic water cut-off device of rotary process, which is characterized in that it is described cut water controller with it is described
Sampling pump connection.
9. as described in claim 1 based on the automatic water cut-off device of rotary process, which is characterized in that on the output shaft of the motor also
It is provided with fitness machine envelope.
10. as claimed in claim 9 based on the automatic water cut-off device of rotary process, which is characterized in that the material of the fitness machine envelope
For rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910349122.4A CN110201423A (en) | 2019-04-28 | 2019-04-28 | A kind of automatic water cut-off device based on rotary process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910349122.4A CN110201423A (en) | 2019-04-28 | 2019-04-28 | A kind of automatic water cut-off device based on rotary process |
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| CN110201423A true CN110201423A (en) | 2019-09-06 |
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| CN201910349122.4A Pending CN110201423A (en) | 2019-04-28 | 2019-04-28 | A kind of automatic water cut-off device based on rotary process |
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