CN117028847A - Heating buffering bias current efficiency improvement control system and control method thereof - Google Patents
Heating buffering bias current efficiency improvement control system and control method thereof Download PDFInfo
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 207
- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000003139 buffering effect Effects 0.000 title abstract description 19
- 230000006872 improvement Effects 0.000 title description 5
- 239000000872 buffer Substances 0.000 claims abstract description 233
- 239000007788 liquid Substances 0.000 claims abstract description 167
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- 229910000831 Steel Inorganic materials 0.000 claims description 36
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- 238000007789 sealing Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 108
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- 239000010779 crude oil Substances 0.000 description 2
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- 238000007726 management method Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/005—Pipe-line systems for a two-phase gas-liquid flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/14—Conveying liquids or viscous products by pumping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/10—Arrangements for supervising or controlling working operations for taking out the product in the line
Abstract
The invention provides a heating buffering bias current efficiency control system and a control method thereof, relating to the technical field of ground engineering, wherein the system comprises: the tops of all the heating buffer devices are respectively connected with a gas buffer condensing tank for condensing the gas through corresponding explosion-proof electric regulating valves; the inside of each heating buffer device is respectively provided with a side-mounted continuous liquid level floating ball detector for continuously detecting the real-time liquid level in the heating buffer device; the bias flow control unit is used for detecting the real-time pressure in the heating buffer device and adjusting the real-time pressure in the heating buffer device and the gas buffer condensing tank through the explosion-proof electric adjusting valve and the gas adjusting pump. The device solves the problems that when a large number of heating buffer devices are operated simultaneously, air tops exist in the sealing device due to heating, so that serious bias current phenomenon exists, safety accidents are easy to cause, the environment is seriously affected by pressure relief through a direct discharge mode, and oil gas resource waste is caused.
Description
Technical Field
The invention relates to the technical field of ground engineering, in particular to a heating buffering bias current efficiency improving control system and a control method thereof.
Background
The oil field gathering and transportation station adopts a large number of heating buffer devices to heat the circulating water of the system so as to ensure the gathering and transportation of crude oil and the well flushing of an oil well; because most of heating equipment special for the oil field does not operate in a closed mode in the water-containing period of oil field development, a manhole at the upper part of the container is opened, and the pressure of the incoming liquid is 0.1-0.2MPa and is larger than the local pressure drop of the pipeline by 0.005MPa, the influence of the incoming liquid bias flow phenomenon on the heating buffer device is not obvious; along with the improvement of national environmental protection standards and the upgrading of oilfield production management, the heating buffer device is specified to be in closed operation, and the sedimentation sewage is heated to form release of a small amount of dissolved gas, so that the top gas cap of the heating device is gradually formed. When the gas cap is continuously increased, the sewage interface in the container is directly reduced, when the pyrotechnic tube of the heating cabin is exposed, the sewage vaporization can rapidly lead to the increase of the gas cap pressure, the temperature of the pyrotechnic tube is increased, and the risks of local mechanical deformation of the pyrotechnic tube and sewage leakage of dirty oil and sewage exist. On one hand, when the burner of the heating device operates, the leaked dirty oil is burnt, so that serious safety accidents are generated; on the other hand, the viscosity of the produced liquid sewage in the middle and later period development of the oil field is continuously increased, so that the local resistance of the pipeline is increased. The two factors are used for superposing and amplifying the influence of bias current on the heating buffer device, so that the safety production management difficulty of the oil and gas gathering and transportation station is increased.
In recent years, serious safety accidents are caused by the serious drift phenomenon of liquid coming from a heating buffer device of a transfer station in each oil field, so that serious economic loss is caused; meanwhile, the bias flow causes the efficiency of the heating system to be reduced, the serious deficiency of the heating capacity of the circulating sewage appears in winter, and the normal crude oil gathering and transportation is difficult to ensure.
At present, in order to solve the influence of bias flow caused by the gas roof, the accident flow of the initial construction of the oil field station is to directly discharge the gas roof through an accident pipeline, so that the environment is seriously polluted, and meanwhile, the waste of oil and gas resources is caused.
Disclosure of Invention
The invention provides a heating buffering bias current efficiency improving control system and a control method thereof, which aim to solve the problems that when a large number of heating buffering devices are operated simultaneously, a gas top exists in a closed interior of the heating buffering devices due to heating, so that serious bias current phenomenon exists, safety accidents are easy to cause, the environment is seriously influenced, and oil gas resources are wasted due to the fact that the pressure is released in a direct discharging mode.
According to an aspect of the present invention, there is provided a heating buffer bias current efficiency-improving control system, including: a plurality of heating buffer devices;
the tops of all the heating buffer devices are respectively connected with a gas buffer condensing tank for condensing gas through corresponding explosion-proof electric regulating valves;
the gas buffer condensing tank is connected with a gas output pump for conveying and adjusting the real-time pressure of the gas in the gas buffer condensing tank;
the inside of each heating buffer device is respectively provided with a side-mounted continuous liquid level floating ball detector for continuously detecting the real-time liquid level in the heating buffer device;
the heating buffer device, the explosion-proof electric regulating valve, the gas buffer condensing tank, the gas output pump and the side-mounted continuous liquid level floating ball detector are respectively connected with a bias flow control unit, and the bias flow control unit is used for detecting real-time pressure in the heating buffer device and regulating the real-time pressure in the heating buffer device and the gas buffer condensing tank through the explosion-proof electric regulating valve and the gas regulating pump.
Preferably, the side-mounted continuous liquid level floating ball detector comprises: a floating ball and an angle sensing mechanism;
the floating ball is connected with one end of the transmission rod, a side wall shaft of the transmission rod, which is close to the other end, is connected with the angle sensing mechanism, and one end of the transmission rod can rotate clockwise or anticlockwise along the vertical direction of the shaft connection position;
the angle sensing mechanism is connected with the bias flow control unit, the angle sensing mechanism is used for detecting the real-time rotation angle of the transmission rod and transmitting the real-time rotation angle to the bias flow control unit, and the bias flow control unit is used for determining the real-time liquid level in the heating buffer device according to the real-time rotation angle.
Preferably, the angle sensing mechanism includes: the device comprises an electric wiring shell, primary magnetic pole magnetic steel, secondary magnetic pole magnetic steel, a rotating shaft, a Hall magnetic induction angle sensor and an induction magnetic core;
one end of the transmission rod, which is far away from the floating ball, is connected with a first-stage magnetic pole steel;
the side wall of the secondary magnetic pole steel is connected with the inner side wall of the electric connection shell through the rotating shaft, and one end of the secondary magnetic pole steel can rotate clockwise or anticlockwise along the vertical direction of the rotating shaft;
one end of the rotating shaft is provided with the induction magnetic core and the Hall magnetic induction angle sensor.
Preferably, the method further comprises: spring piece, movable contact and stationary contact;
one end of the secondary magnetic pole steel far away from the primary magnetic pole steel is connected with one end of the spring piece, and the other end of the spring piece is connected with the movable contact;
the fixed contact is fixed on the inner side wall of the electric connection shell, the position of the fixed contact is located below the movable contact, and when the movable contact is in contact with the fixed contact, the real-time liquid level in the heating buffer device is located at the preset highest position.
Preferably, the bias current control unit includes: a primary pressure transmitter, a secondary pressure transmitter, a tertiary pressure transmitter and a liquid level switch;
the primary pressure transmitter is arranged on a liquid inlet collecting pipe connected with the heating buffer device and used for detecting the real-time liquid inlet pressure in the liquid inlet collecting pipe;
the secondary pressure transmitter is connected with the heating buffer device and is used for detecting the real-time pressure of the gas in the heating buffer device;
the three-stage pressure transmitter is connected with the gas buffer condensation tank and is used for detecting the real-time pressure of the gas in the gas buffer condensation tank;
the liquid level switch is fixed inside the gas buffer condensation tank and is used for detecting whether the real-time liquid level of the liquid in the gas buffer condensation tank is smaller than a first preset liquid level.
Preferably, the method further comprises: a pump return solenoid valve;
the inlet of the pump return electromagnetic valve is connected with the outlet pipeline of the gas output pump, and the outlet of the pump return electromagnetic valve is connected with the inlet pipeline of the gas output pump.
According to an aspect of the present invention, there is provided a control method of a heating buffer bias current efficiency control system, including:
respectively determining the jacking pressure of each heating buffer device under the condition that the liquid inlet amount is the same;
the bias flow control unit detects the real-time pressure in the heating buffer device and judges whether the real-time pressure in the heating buffer device is equal to the corresponding top pressure, if not, the bias flow control unit enables the real-time pressure to be equal to the top pressure by adjusting the opening of the explosion-proof electric adjusting valve;
when the bias flow control unit detects and judges that the real-time liquid level in the heating buffer device is smaller than a second preset liquid level through the side-mounted continuous liquid level floating ball detector, the opening of the explosion-proof electric regulating valve is regulated to enable the real-time liquid level to be smaller than or equal to the second preset liquid level;
when the bias flow control unit detects and judges that the real-time pressure in the gas buffer condensing tank is larger than the real-time pressure in the heating buffer device, the bias flow control unit controls the gas output pump to start so that the real-time pressure in the gas buffer condensing tank is smaller than the real-time pressure in the heating buffer device.
Preferably, the method for respectively determining the jacking pressure of each heating buffer device under the condition of the same liquid inlet amount comprises the following steps:
determining the pressure loss of each fluid entering the heating buffer device in the pipeline respectively;
according to the pressure loss, determining the top pressure in each heating buffer device under the condition of meeting the relation (1);
Ht 1 +P 1 ＝Ht 2 +P 2 ＝...＝Ht N +P N (1)；
in the formula, ht i For the corresponding pressure loss of the ith heating buffer device, P i Corresponding to the ith heating buffer deviceN is the number of heating buffers, where i=1, 2,3.
Preferably, the method for determining the pressure loss of each fluid entering the heating buffer device in the pipeline comprises the following steps:
determining the pressure loss of the fluid in the heating buffer device in the pipeline by using a formula (2);
Ht＝V 2 *[λ*ΣL/d+Σζ]/2g (2)；
wherein λ= (1/(-1.8 x log) 10 ((e/(3.7*d*1000)) 1.11 +6.9/Re)) 2 ；
Wherein re=v d/V;
wherein Ht is pressure loss, m water column, V is flow velocity, m/s, lambda is along-way resistance coefficient, L is total length of liquid inlet pipelines of the liquid collecting pipe and the heating buffer device, m, d is pipeline diameter, m, zeta is local resistance coefficient, g is gravitational acceleration, re is Reynolds number, V is water movement viscosity, m 2 And/s, e is the roughness of the pipeline.
The invention has at least the following beneficial effects:
the invention provides a heating buffering bias current efficiency control system and a control method thereof, wherein a bias current control unit and a side-mounted continuous liquid level floating ball detector are used for running in a linkage manner to timely detect and adjust the sewage liquid level in a heating buffer device, so that the uniform liquid feeding of each heating buffer device in a station is ensured, and the serious influence of bias current on the heating buffer device is solved; and by additionally arranging the gas output pump and the explosion-proof electric regulating valve, the system is integrally and continuously controlled, so that the closed recovery of gas and the pollution elimination are realized, and the stable operation of the bias current efficiency improvement control system of the heating device is ensured.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic diagram of a heating buffer bias current efficiency control system according to an embodiment of the invention;
FIG. 2 shows a front view of a side-mounted continuous level float detector according to an embodiment of the present invention;
fig. 3 shows a top view of a side mounted continuous liquid level float gauge according to an embodiment of the present invention.
In the figure, the device comprises a 1-heating buffer device, a 2-controller, a 4-gas buffer condensing tank, a 11-liquid inlet pipeline, a 12-liquid outlet pipeline, a 16-liquid inlet collecting pipe, a 17-liquid outlet collecting pipe, a 21-primary pressure transmitter, a 22-side-mounted continuous liquid level floating ball detector, a 23-secondary pressure transmitter, a 24-explosion-proof electric regulating valve, a 31-tertiary pressure transmitter, a 32-liquid level switch, a 33-condensate discharge electromagnetic valve, a 34-pump return electromagnetic valve, a 42-condensate discharge pipeline, a 44-gas external transmission pump, a 45-check valve, a 71-floating ball, 72-primary magnetic pole magnetic steel, 73-secondary magnetic pole magnetic steel, a 74-rotating shaft, a 75-Hall magnetic induction angle sensor, a 76-inductive magnetic core, a 77-stationary contact, a 78-movable contact, a 79-spring piece, an 80-transmission rod and an 81-electric wiring shell.
Detailed Description
Various exemplary embodiments, features and aspects of the invention will be described in detail below with reference to the drawings. In the drawings, like reference numbers indicate identical or functionally similar elements. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
The word "exemplary" is used herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the term "at least one" herein means any one of a plurality or any combination of at least two of a plurality, for example, including at least one of A, B, C, and may mean including any one or more elements selected from the group consisting of A, B and C.
Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better illustration of the invention. It will be understood by those skilled in the art that the present invention may be practiced without some of these specific details. In some instances, well known methods, procedures, components, and circuits have not been described in detail so as not to obscure the present invention.
FIG. 1 is a schematic diagram of a heating buffer bias current efficiency control system according to an embodiment of the invention; FIG. 2 shows a front view of a side-mounted continuous level float detector according to an embodiment of the present invention; fig. 3 shows a top view of a side mounted continuous liquid level float gauge according to an embodiment of the present invention. As shown in fig. 1-3, a heating buffer bias current efficiency control system, comprising: a plurality of heating buffer devices 1; the tops of all the heating buffer devices 1 are respectively connected with a gas buffer condensation tank 4 for condensing gas through corresponding explosion-proof electric regulating valves 24; the gas buffer condensation tank 4 is connected with a gas output pump 44 for conveying and regulating the real-time pressure of the gas in the gas buffer condensation tank; the inside of each heating buffer device 1 is respectively provided with a side-mounted continuous liquid level floating ball detector 22 for continuously detecting the real-time liquid level in the inside; the heating buffer device 1, the explosion-proof electric regulating valve 24, the gas buffer condensing tank 4, the gas output pump 44 and the side-mounted continuous liquid level floating ball detector 22 are respectively connected with a bias flow control unit, and the bias flow control unit is used for detecting the real-time pressure in the heating buffer device 1 and regulating the real-time pressure in the heating buffer device 1 and the gas buffer condensing tank 4 through the explosion-proof electric regulating valve 24 and the gas regulating pump.
In the embodiment of the present invention, if there are two heating buffer devices 1 in the system, the two heating buffer devices 1 are respectively connected to the liquid inlet collecting pipe 16 through the corresponding liquid inlet pipeline 11, the liquid outlet collecting pipe 17 through the corresponding liquid outlet pipeline 12, and the gas buffer condensing tank 4 through the corresponding explosion-proof electric control valve 24 and the gas inlet pipeline of the condensing tank.
The heating buffer device 1 heats the liquid in the heating buffer device after being started, the gas pressure generated after heating is different, and meanwhile, the length of the liquid inlet pipeline 11 is different due to the different positions of the two heating buffer devices 1, and the flow rate and the flow velocity of the liquid entering the heating buffer device are also different. In order to prevent the drift phenomenon of the two heating buffer devices 1 in the operation process, the real-time liquid inlet amount inside the two devices needs to be ensured to be the same.
The liquid inlet amount is influenced by the pressure loss of the liquid in the pipeline and the internal pressure of the heating buffer devices 1, and when the pressure in each heating buffer device 1 is equal to the sum of the pressure loss of the liquid correspondingly entering the heating buffer devices 1, the liquid inlet amount in each heating buffer device 1 is the same. Thus, the pressing force to be maintained in each heating buffer device 1, that is, the predetermined pressing force can be determined according to the corresponding pressing loss of each heating buffer device 1.
The bias flow control unit detects the real-time pressure inside each heating buffer device 1 in real time after being started, and continuously judges whether the real-time pressure inside each heating buffer device 1 is equal to the preset jacking pressure, if not, the bias flow control unit indicates that the liquid inlet amount inside each heating buffer device 1 is different, and then the bias flow control unit controls the explosion-proof electric regulating valve 24 to be opened and regulates the opening degree of the explosion-proof electric regulating valve, so that the real-time pressure inside each heating buffer device 1 is kept the same as the corresponding preset jacking pressure. The explosion-proof electric regulating valve 24 can also adopt an explosion-proof pneumatic regulating valve under the condition that an instrument air source exists in a station.
After the gas in the heating buffer device 1 enters the gas buffer condensation tank 4 through the explosion-proof electric regulating valve 24 and the gas inlet pipeline of the condensation tank, the gas buffer condensation tank 4 is started to cool the gas. The gas is cooled to generate condensate; the bias flow control unit detects the real-time liquid level in the gas buffer condensation tank 4, and after judging that the real-time liquid level reaches a first preset liquid level, controls the condensate discharge electromagnetic valve 33 connected with the condensate discharge pipeline 42 at the bottom of the gas buffer condensation tank 4 to open, and the internal condensate flows to the in-station dirty oil buffer tank to realize the system recovery of the light oil, and controls the condensate discharge electromagnetic valve 33 to close after the condensate is discharged.
The real-time pressure of the gas in the gas buffer condensing tank 4 needs to be smaller than the real-time pressure in the heating buffer device 1, so that the phenomenon that the real-time pressure in the heating buffer device 1 is too high to be discharged into the gas buffer condensing tank 4 to cause bias flow is prevented. The bias flow control unit detects the real-time pressure in the gas buffer condensation tank 4 in real time and judges whether the real-time pressure is smaller than the real-time pressure in the heating buffer device 1, if yes, the gas output pump 44 is controlled to start and the check valve 45 at the outlet of the gas output pump 44 is controlled to open, the gas output pump 44 pumps out the gas in the gas buffer condensation tank 4, and the gas is boosted and conveyed to the natural gas drying system in the station, so that the total recovery of the gas is realized; when the real-time pressure in the gas buffer condensation tank 4 falls below the real-time pressure in the heating buffer device 1, the gas delivery pump 44 and the check valve 45 are controlled to be closed.
The bias flow control unit detects the real-time liquid level in the heating buffer device 1 in real time through the side-mounted continuous liquid level floating ball detector 22, judges whether the real-time liquid level is equal to a second preset liquid level, if not, controls the explosion-proof electric regulating valve 24 to open so as to reduce the real-time pressure in the heating buffer device 1, thereby increasing the real-time liquid level, or controls and regulates the opening degree of a valve at an inlet or an outlet to regulate the liquid inlet amount or the liquid outlet amount, and then adjusts the real-time liquid level. The liquid level in the heating buffer device 1 needs to be kept stable, the running stability of the system can be influenced by the fact that the liquid level is too high or too low, and the bias flow control unit can adjust the real-time liquid level through the side-mounted continuous liquid level floating ball detector 22.
Meanwhile, the bias flow control unit can not only adjust the liquid inlet amount of the heating buffer device 1 through the top pressure to prevent bias flow, but also detect and judge whether the real-time liquid level in each heating buffer device 1 is the same or equal to the second preset liquid level through the side-mounted continuous liquid level floating ball detector 22, so as to determine whether bias flow phenomenon occurs or not, and prevent bias flow phenomenon from being unable to be found in time due to inaccurate pressure detection.
In the present invention, the side-mounted continuous liquid level float gauge 22 comprises: a float ball 71 and an angle sensing mechanism; the floating ball 71 is connected with one end of the transmission rod 80, a side wall shaft of the transmission rod 80 close to the other end is connected with the angle sensing mechanism, and one end of the transmission rod 80 can rotate clockwise or anticlockwise along the vertical direction of the shaft connection position; the angle sensing mechanism is connected with the bias flow control unit, the angle sensing mechanism is used for detecting the real-time rotation angle of the transmission rod 80 and transmitting the real-time rotation angle to the bias flow control unit, and the bias flow control unit is used for determining the real-time liquid level in the heating buffer device 1 according to the real-time rotation angle.
In the embodiment of the present invention, when the liquid level is detected, the floating ball 71 floats on the liquid level of the liquid in the heating buffer device 1, and when the liquid level rises or falls, the floating ball 71 floats along with the liquid level, so that one end of the transmission rod 80 is driven to rotate clockwise or anticlockwise with the connection part with the angle sensing mechanism as an axis. The angle sensing mechanism detects the rotation angle of the transmission rod 80 in real time and transmits the rotation angle to the bias flow control unit, and the bias flow control unit determines the real-time liquid level of the liquid in the heating buffer device 1 according to the rotation angle. If the position of the floating ball 71 is at the lowest position, i.e. the floating ball 71 moves to the lowest point, one end of the driving rod 80 rotates anticlockwise to the liquid level position corresponding to the minimum angle, and the floating ball 71 moves to the highest point, one end of the driving rod 80 rotates clockwise to the liquid level position corresponding to the maximum angle, so that the real-time liquid level in the heating buffer device 1 corresponding to the condition that the driving rod 80 rotates to a certain angle between the maximum angle and the minimum angle can be calculated.
In the present invention, the angle sensing mechanism includes: an electric wiring housing 81, a primary magnetic pole magnetic steel 72, a secondary magnetic pole magnetic steel 73, a rotating shaft 74, a Hall magnetic induction angle sensor 75 and an induction magnetic core 76; one end of the transmission rod 80, which is far away from the floating ball 71, is connected with a primary magnetic pole steel 72; the side wall of the secondary magnetic pole steel 73 is connected with the inner side wall of the electrical connection housing 81 through the rotating shaft 74, and one end of the secondary magnetic pole steel 73 can rotate clockwise or anticlockwise along the vertical direction of the rotating shaft 74; one end of the rotating shaft 74 is provided with the inductive magnetic core 76 and the hall magnetic induction angle sensor 75.
In the embodiment of the invention, one end of the transmission rod 80 far away from the floating ball 71 is positioned inside the electrical connection housing 81, and the side wall of the transmission rod 80 far away from one end of the floating ball 71 is connected with the inner side wall shaft of the electrical connection housing 81. One end of the primary magnetic pole steel 72 is connected with a transmission rod 80; the position where the secondary magnetic pole steel 73 is connected with the inner side wall of the electric connection shell 81 is close to one end of the secondary magnetic pole steel 73; the other end of the primary magnetic pole steel 72 is opposite to the other end of the secondary magnetic pole steel 73, the magnetic poles of the opposite ends of the two magnetic pole steels are opposite, and the Hall magnetic induction angle sensor 75 is arranged close to the induction magnetic core 76.
When the floating ball 71 rotates upwards or downwards, the other end of the transmission rod 80 is driven to rotate upwards or downwards, so that the other end of the primary magnetic pole steel 72 is driven to rotate upwards or downwards; the other end of the first-stage magnetic pole magnetic steel 72 is opposite to the other end of the second-stage magnetic pole magnetic steel 73 and has opposite magnetic poles, so that the other end of the second-stage magnetic pole magnetic steel 73 is driven to rotate upwards or downwards through magnetic attraction. When the secondary magnetic pole steel 73 rotates upwards or downwards, the induction magnetic core 76 is driven to rotate, the Hall magnetic induction angle sensor 75 detects the angle change value when the induction magnetic core 76 rotates, and a continuous rotation angle signal is output to transmit the rotation angle signal to the bias current control unit. The bias flow control unit can determine the rotation angle of the transmission rod 80 according to the rotation angle signal, so as to determine the up-down floating distance of the floating ball 71, namely the current real-time liquid level in the heating buffer device 1, and thus measure continuous liquid level change.
In the present invention, further comprising: a spring piece 79, a movable contact 78, and a stationary contact 77; one end of the secondary magnetic pole steel 73, which is far away from the primary magnetic pole steel 72, is connected with one end of the spring piece 79, and the other end of the spring piece 79 is connected with the movable contact 78; the stationary contact 77 is fixed on the inner side wall of the electrical connection housing 81, and is positioned below the movable contact 78, and when the movable contact 78 contacts with the stationary contact 77, the real-time liquid level in the heating buffer device 1 is at a predetermined highest position.
In the embodiment of the present invention, the movable contact 78 is connected to the bias current control unit. When the floating ball 71 moves downwards to the lowest position, one end of the secondary magnetic pole steel 73 is at the highest position, and at the moment, the movable contact 78 at the other end of the spring piece 79 is also at the highest position, which means that the liquid level inside the heating buffer device 1 is the lowest; when the floating ball 71 moves upward to the highest position along with the rise of the liquid level, one end of the secondary magnetic pole steel 73 is at the lowest position, and at this time, the movable contact 78 at the other end of the spring piece 79 is in contact with the stationary contact 77 below. When the movable contact 78 contacts the stationary contact 77, a signal is sent to the bias flow control unit, and the bias flow control unit determines that the liquid level in the heating buffer device 1 reaches the highest position at the moment according to the signal sent by the movable contact 78, so as to prevent the liquid level from rising continuously to cause the liquid in the heating buffer device 1 to overflow upwards from the pipeline or the pressure to be too high, and the bias flow control unit can control the valve of the corresponding liquid inlet pipeline 11 to be closed or control the corresponding explosion-proof electric regulating valve 24 to be closed, so that the liquid level does not rise continuously.
The movable contact 78 and the stationary contact 77 can prevent the problem of excessive liquid in the heating buffer device 1 caused by abnormal detection or calculation of the sensor when the liquid level reaches the highest point only by detecting the liquid level height through the floating ball 71 and the Hall magnetic induction angle sensor 75, and the liquid level is not found to reach the highest position in time.
In the present invention, the bias current control unit includes: primary pressure transmitter 21, secondary pressure transmitter 23, tertiary pressure transmitter 31, and level switch 32; the primary pressure transmitter 21 is installed on the feed liquor collecting pipe 16 connected with the heating buffer device 1 and is used for detecting the real-time feed liquor pressure in the feed liquor collecting pipe 16; the secondary pressure transmitter 23 is connected with the heating buffer device 1 and is used for detecting the real-time pressure of the gas in the heating buffer device 1; the three-stage pressure transmitter 31 is connected with the gas buffer condensation tank 4 and is used for detecting the real-time pressure of the gas in the gas buffer condensation tank 4; the liquid level switch 32 is fixed inside the gas buffer condensation tank 4, and is used for detecting whether the liquid level in the gas buffer condensation tank 4 is smaller than a first preset liquid level.
In an embodiment of the present invention, the bias current control unit further includes: the controller 2 is respectively connected with the primary pressure transmitter 21, the secondary pressure transmitter 23, the tertiary pressure transmitter 31, the liquid level switch 32, the Hall magnetic induction angle sensor 75, the movable contact 78, the gas output pump 44, the explosion-proof electric regulating valve 24, the condensate discharge electromagnetic valve 33 and the check valve 45.
The controller 2 controls the secondary pressure transmitter 23 to start, detects the real-time pressure in the corresponding connected thermal buffering device, continuously judges whether the real-time pressure in the heating buffering device 1 is equal to the preset jacking pressure, and if not, controls the explosion-proof electric regulating valve 24 corresponding to the heating buffering device 1 to open, and regulates the real-time pressure in the heating buffering device 1 to be equal to the preset jacking pressure.
The controller 2 controls the three-stage pressure transmitter 31 to start detecting the real-time pressure in the gas buffer condensation tank 4 and judging whether the real-time pressure in the gas buffer condensation tank 4 is smaller than the real-time pressure in the heating buffer device 1, if not, the controller 2 controls the gas output pump 44 to start, the gas in the gas buffer condensation tank 4 is pumped out to be conveyed to the natural gas system, and when the real-time pressure in the gas buffer condensation tank 4 is smaller than the real-time pressure in the heating buffer device 1, the gas output pump 44 is controlled to be closed.
The controller 2 controls the liquid level switch 32 to be started, detects the liquid level in the gas buffer condensation tank 4, judges whether the real-time liquid level of the liquid in the gas buffer condensation tank 4 is smaller than a first preset liquid level, and if not, controls the condensate discharge electromagnetic valve 33 to be opened, and discharges the liquid in the gas buffer condensation tank 4 into the dirty oil buffer tank.
In the present invention, further comprising: a pump return solenoid valve 34; an inlet of the pump return electromagnetic valve 34 is connected with an outlet pipeline of the gas output pump 44, and an outlet of the pump return electromagnetic valve 34 is connected with an inlet pipeline of the gas output pump 44.
In the embodiment of the present invention, the pump return electromagnetic valve 34 is used to properly open the pump return electromagnetic valve 34 in order to ensure that the gas output pump 44 is not frequently started and stopped when the amount of air discharged is insufficient in the pressure adjustment process of the plurality of heating buffer devices 1, so that the gas output pump 44 works in a low-power-consumption operation state, the gas pressure of the gas buffer condensation tank 4 is ensured to be kept stable, and the stable control of the gas pressure inside the whole heating buffer device 1 is also ensured.
The invention also provides a control method of the heating buffer bias current efficiency control system, which comprises the following steps: respectively determining the jacking pressure of each heating buffer device 1 under the condition that the liquid inlet amount is the same; the bias flow control unit detects the real-time pressure in the heating buffer device 1 and judges whether the real-time pressure in the heating buffer device 1 is equal to the corresponding jacking pressure, if not, the bias flow control unit enables the real-time pressure to be equal to the jacking pressure by adjusting the opening of the explosion-proof electric adjusting valve 24; when the bias flow control unit detects and judges that the real-time liquid level in the heating buffer device 1 is smaller than the preset liquid level through the side-mounted continuous liquid level floating ball detector 22, the opening of the explosion-proof electric regulating valve 24 is regulated to enable the real-time liquid level to be smaller than or equal to a second preset liquid level; when the bias flow control unit detects and judges that the real-time pressure in the gas buffer condensation tank 4 is greater than the real-time pressure in the heating buffer device 1, the bias flow control unit controls the gas output pump 44 to start so that the real-time pressure in the gas buffer condensation tank 4 is smaller than the real-time pressure in the heating buffer device 1.
In the present invention, the method for determining the top pressure of each heating buffer device 1 under the condition of the same liquid inlet amount comprises the following steps: determining the pressure loss of each fluid entering the heating buffer device in the pipeline respectively; according to the pressure loss, determining the top pressure in each heating buffer device under the condition of meeting the relation (1);
Ht 1 +P 1 ＝Ht 2 +P 2 ＝...＝Ht N +P N (1)；
in the formula, ht i For the corresponding pressure loss of the ith heating buffer device, P i And (3) jacking corresponding to the ith heating buffer device, wherein N is the number of the heating buffer devices, and i=1, 2,3.
In the present invention, the method for determining the pressure loss of each fluid entering the heating buffer device in the pipeline comprises the following steps: determining the pressure loss of the fluid in the heating buffer device in the pipeline by using a formula (2);
Ht＝V 2 *[λ*ΣL/d+Σζ]/2g (2)；
wherein λ= (1/(-1.8 x log) 10 ((e/(3.7*d*1000)) 1.11 +6.9/Re)) 2 The method comprises the steps of carrying out a first treatment on the surface of the Wherein re=v d/V;
wherein Ht is pressure loss, m water column, V is flow velocity, m/s, lambda is along-way resistance coefficient, L is total length of liquid inlet pipelines of the liquid collecting pipe and the heating buffer device, m, d is pipeline diameter, m, zeta is local resistance coefficient, g is weightForce acceleration, re is Reynolds number, v is water movement viscosity, m 2 And/s, e is the roughness of the pipeline.
In the embodiment of the invention, according to the fluid mechanics formula, the pressure loss of the medium in the pipeline is proportional to the square of the flow velocity of the fluid and the local resistance coefficient and the on-way resistance coefficient of the fluid flowing in the pipeline, namely the formula (2).
Assuming that the local drag coefficients ζ of the heating and buffering apparatuses 1 are all uniform (i.e., the elbow in the liquid inlet pipe, the way of the liquid inlet pipe into the T-pipe side outlet of the heating and buffering apparatus 1, the full opening of the liquid inlet regulating gate valve, etc.) the on-way drag coefficient λ and the pressure loss of the liquid inlet fluid of each heating and buffering apparatus 1 are all uniform, the gap length L between the heating and buffering apparatuses 1 is related. The interval from the inlet manifold 16 to the N# heating buffer devices through the 1# heating buffer devices is different, the pressure loss is different, in order to keep the same pressure loss, the fluid is automatically distributed with different flow rates to each heating buffer device 1, the flow rates are different, the inlet flow rate is different, and the inlet flow rate of the heating buffer device 1 at the tail end is the smallest.
In addition, because the pressure of the top gas of each heating buffer device 1 is different, the pressure loss of the liquid inlet of the whole heating buffer device 1 is superposed, and because the liquid inlet amount is different, the generated volatile gas amount is different, so that the pressure of the top gas is different, the liquid inlet flow is unbalanced, and a negative feedback effect is formed, so that a larger bias current is formed.
Let the gas cap pressure of the No. 1 heating buffer device be P 1 Pressure loss Ht 1 Length of pipeline L 1 Coefficient of resistance lambda along the way 1 The method comprises the steps of carrying out a first treatment on the surface of the Flow velocity V 1 ；
Let the gas cap pressure of the No. 2 heating buffer device be P 2 Pressure loss Ht 2 Length of pipeline L 2 Coefficient of resistance lambda along the way 2 The method comprises the steps of carrying out a first treatment on the surface of the Flow velocity V 2 …；
Let the gas cap pressure of the N# heating buffer be P N Pressure loss Ht N Length of pipeline L N Coefficient of resistance lambda along the way N The method comprises the steps of carrying out a first treatment on the surface of the Flow velocity V N ；
Then Ht 1 ＝V 1 2 *[λ 1 *ΣL 1 /d+Σζ]/2g；Ht 2 ＝V 2 2 *[λ 2 *ΣL 2 /d+Σζ]/2g；Ht Ν ＝V Ν 2 *[λ Ν *ΣL Ν /d+Σζ]/2g；
In order to ensure that the feed rate of each heating buffer device is consistent, ht must be ensured 1 +P 1 ＝Ht 2 +P 2 ＝Ht Ν +P Ν ；
The gas head pressure (real-time pressure) of each heating buffer device 1 can be measured as P by the secondary pressure transmitter 23 1 、P 2 、…P N From this, the flow rate of the liquid fed to each heating and buffering device 1 and thus the liquid feed amount can be calculated. By adjusting the air pressure P of each heating buffer device 1 1 、P 2 、…P N The purpose of consistent liquid inlet amount can be achieved, thereby preventing the generation of bias current.
After the bias flow control unit determines the preset jacking pressure corresponding to each heating buffer device 1 through the formulas (1) and (2), the detected real-time pressure is compared with the preset jacking pressure through the secondary pressure transmitter 23, and the opening degree of the corresponding explosion-proof electric regulating valve 24 is regulated to keep the real-time pressure in each heating buffer device 1 equal to the preset jacking pressure, so that the purpose of keeping the liquid inlet amount of each heating buffer device 1 consistent is achieved.
The bias flow control unit can judge the trend of the liquid amount according to the real-time liquid level detected by the side-mounted continuous liquid level floating ball detector 22 of each heating buffer device 1, and is used for correcting errors of liquid inlet flow calculated by formulas (1) and (2), and meanwhile, the bias flow control unit can control the liquid level height of the heating section of each heating buffer device 1 to fluctuate within a required range.
It will be appreciated that the above-mentioned method embodiments of the present invention can be combined with each other to form a combined embodiment without departing from the principle logic, and the present invention is not repeated herein.
It will be appreciated by those skilled in the art that in the above-described method of the specific embodiments, the written order of steps is not meant to imply a strict order of execution but rather should be construed according to the function and possibly inherent logic of the steps.
The invention has the following advantages: 1. on the premise of not changing the original mechanical equipment of the heating buffer device, the liquid level and pressure detection mode is updated, and the serious bias flow problem of circulating sewage in an oil field gathering and transportation station is effectively solved through the pressure adjustment of the gas cap, so that the unsafe hidden danger is eliminated, and the heating efficiency of a system is improved to meet the technical requirements of oil field safety production; 2: the bias flow control unit is adopted to comprehensively monitor and adjust the liquid level and the pressure of each heating device, so that the safe and stable operation of a plurality of operation heating buffer devices is ensured; 3: the original interface of the built container is utilized to complete the process, the pressure container is not required to be modified, and the feasibility is ensured; 4. the autonomous research and development of the bias flow control unit is realized, the fault equipment is accurately determined and the alarm and linkage guarantee measures are implemented through the comparison of the liquid level and the pressure ratio on the premise of realizing the liquid level stabilizing function of the heating buffer device through programming, so that the safety and the stability of the system are ensured, meanwhile, the fault point of the equipment is found in time, and the labor intensity of operators is greatly reduced; 5. for large-scale stations or small-scale independent stations, the system has better adaptability, and has the advantages of reliable technology and strong economy compared with the conventional potential safety hazard treatment; 6. through the implementation of the heating buffering bias current efficiency improving control device, a plurality of heating buffering devices of the station warehouse do not adopt open operation due to bias current any more, the leakage of volatile organic compounds is prevented, and technical guarantee is provided for improving the air quality of an oil field production area.
According to the invention, by arranging the side-mounted continuous liquid level floating ball detector, the pressure transmitter and the explosion-proof electric regulating valve to run in a linkage manner and measuring and adjusting the sewage liquid level in real time, each heating buffer device of a station is ensured to feed liquid uniformly, and the serious influence of bias current on the heating buffer devices is solved; and by additionally arranging a gas buffer condensing tank for stabilizing gas, the integrated continuous control of the system is realized, the airtight recovery of gas is realized, pollution is eliminated, and meanwhile, the stable operation of the system is ensured. The problems of serious potential safety hazards caused by liquid supply bias flows of heating buffer devices of an existing oil field oil transfer station, a gathering station and a water discharge station are solved, the bias flow phenomenon of the heating buffer devices is eliminated by adopting a control method for balancing the gas top pressures of different heating buffer devices, the potential safety hazards caused by dry combustion of the heating buffer devices due to bias flows are avoided, and the purpose of safe production is achieved. The invention also has the advantages of simple and convenient equipment installation, wide application, simple process control, small construction quantity, safe and reliable operation, low cost, good process adaptability and the like.
The foregoing description of embodiments of the invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the technical improvements in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (9)
1. A heating buffer bias current efficiency control system, comprising: a plurality of heating buffer devices (1);
the tops of all the heating buffer devices (1) are respectively connected with a gas buffer condensation tank (4) for condensing gas through corresponding explosion-proof electric regulating valves (24);
the gas buffer condensing tank (4) is connected with a gas output pump (44) for conveying and adjusting the real-time pressure of the gas in the gas buffer condensing tank;
the inside of each heating buffer device (1) is respectively provided with a side-mounted continuous liquid level floating ball detector (22) for continuously detecting the real-time liquid level in the heating buffer device;
the heating buffer device is characterized in that the heating buffer device (1), the explosion-proof electric regulating valve (24), the gas buffer condensing tank (4), the gas output pump (44) and the side-mounted continuous liquid level floating ball detector (22) are respectively connected with a bias flow control unit, and the bias flow control unit is used for detecting real-time pressure in the heating buffer device (1) and regulating the real-time pressure in the heating buffer device (1) and the gas buffer condensing tank (4) through the explosion-proof electric regulating valve (24) and the gas regulating pump.
2. The heating buffer bias current efficiency-improving control system according to claim 1, wherein the side-mounted continuous liquid level float ball detector (22) comprises: a float ball (71) and an angle sensor mechanism;
the floating ball (71) is connected with one end of the transmission rod (80), a side wall shaft of the transmission rod (80) close to the other end is connected with the angle sensing mechanism, and one end of the transmission rod (80) can rotate clockwise or anticlockwise along the vertical direction of the shaft connection position;
the angle sensing mechanism is connected with the bias flow control unit, the angle sensing mechanism is used for detecting the real-time rotation angle of the transmission rod (80) and transmitting the real-time rotation angle to the bias flow control unit, and the bias flow control unit is used for determining the real-time liquid level in the heating buffer device (1) according to the real-time rotation angle.
3. The heating buffer bias current efficiency control system of claim 2, wherein the angle sensing mechanism comprises: the device comprises an electric wiring shell (81), a primary magnetic pole magnetic steel (72), a secondary magnetic pole magnetic steel (73), a rotating shaft (74), a Hall magnetic induction angle sensor (75) and an induction magnetic core (76);
one end of the transmission rod (80) far away from the floating ball (71) is connected with a primary magnetic pole steel (72);
the side wall of the secondary magnetic pole steel (73) is connected with the inner side wall of the electrical wiring shell (81) through the rotating shaft (74), and one end of the secondary magnetic pole steel (73) can rotate clockwise or anticlockwise along the vertical direction of the rotating shaft (74);
one end of the rotating shaft (74) is provided with the induction magnetic core (76) and the Hall magnetic induction angle sensor (75).
4. The heating buffer bias current efficiency control system of claim 3, further comprising: a spring piece (79), a movable contact (78), and a stationary contact (77);
one end of the secondary magnetic pole steel (73) far away from the primary magnetic pole steel (72) is connected with one end of the spring piece (79), and the other end of the spring piece (79) is connected with the movable contact (78);
the fixed contact (77) is fixed on the inner side wall of the electric connection shell (81), the position of the fixed contact is located below the movable contact (78), and when the movable contact (78) is in contact with the fixed contact (77), the real-time liquid level in the heating buffer device (1) is located at a preset highest position.
5. The heating buffer bias current efficiency control system of claim 1, wherein the bias current control unit comprises: a primary pressure transmitter (21), a secondary pressure transmitter (23), a tertiary pressure transmitter (31) and a liquid level switch (32);
the primary pressure transmitter (21) is arranged on a liquid inlet collecting pipe (16) connected with the heating buffer device (1) and is used for detecting the real-time liquid inlet pressure in the liquid inlet collecting pipe (16);
the secondary pressure transmitter (23) is connected with the heating buffer device (1) and is used for detecting the real-time pressure of the gas in the heating buffer device (1);
the three-stage pressure transmitter (31) is connected with the gas buffer condensation tank (4) and is used for detecting the real-time pressure of the gas in the gas buffer condensation tank (4);
the liquid level switch (32) is fixed inside the gas buffer condensation tank (4) and is used for detecting whether the real-time liquid level of the liquid in the gas buffer condensation tank (4) is smaller than a first preset liquid level.
6. The heating buffer bias current efficiency control system of any of claims 1-5, further comprising: a pump return solenoid valve (34);
an inlet of the pump return electromagnetic valve (34) is connected with an outlet pipeline of the gas output pump (44), and an outlet of the pump return electromagnetic valve (34) is connected with an inlet pipeline of the gas output pump (44).
7. A control method of a heating buffer bias current efficiency control system, comprising:
respectively determining the jacking pressure of each heating buffer device (1) under the condition that the liquid inlet amount is the same;
the bias flow control unit detects the real-time pressure in the heating buffer device (1) and judges whether the real-time pressure in the heating buffer device (1) is equal to the corresponding jacking pressure, if not, the bias flow control unit enables the real-time pressure to be equal to the jacking pressure by adjusting the opening of the explosion-proof electric adjusting valve (24);
when the bias flow control unit detects and judges that the real-time liquid level in the heating buffer device (1) is smaller than a second preset liquid level through the side-mounted continuous liquid level floating ball detector (22), the opening of the explosion-proof electric regulating valve (24) is regulated to enable the real-time liquid level to be smaller than or equal to the second preset liquid level;
when the bias flow control unit detects and judges that the real-time pressure in the gas buffer condensing tank (4) is larger than the real-time pressure in the heating buffer device (1), the bias flow control unit controls the gas output pump (44) to start so that the real-time pressure in the gas buffer condensing tank (4) is smaller than the real-time pressure in the heating buffer device (1).
8. The control method of the heating buffer bias current efficiency control system according to claim 7, wherein the method for respectively determining the top pressure of each heating buffer device (1) under the condition that the liquid inlet amount is the same comprises the following steps:
determining the pressure loss of each fluid entering the heating buffer device (1) in the pipeline;
according to the pressure loss, determining the top pressure in each heating buffer device (1) under the condition of meeting the relation (1);
Ht 1 +P 1 ＝Ht 2 +P 2 ＝...＝Ht N +P N (1)；
in the formula, ht i For the pressure loss corresponding to the ith heating buffer device (1), P i The pressing force corresponding to the ith heating buffer device (1), and N is the number of the heating buffer devices (1), wherein i=1, 2,3.
9. The control method of a heating buffer bias current efficiency control system according to claim 8, wherein the method for determining the pressure loss in the pipeline of each fluid entering the heating buffer device (1) respectively comprises the following steps:
determining the pressure loss of the fluid in the heating buffer device (1) in the pipeline by using a formula (2);
Ht＝V 2 *[λ*ΣL/d+Σζ]/2g (2)；
wherein λ= (1/(-1.8 x log) 10 ((e/(3.7*d*1000)) 1.11 +6.9/Re)) 2 ；
Wherein re=v d/V;
wherein Ht is pressure loss, m water column, V is flow velocity, m/s, lambda is along-way resistance coefficient, L is total length of liquid inlet pipelines of the liquid collecting pipe and the heating buffer device, m, d is pipeline diameter, m, zeta is local resistance coefficient, g is gravitational acceleration, re is Reynolds number, V is water movement viscosity, m 2 And/s, e is the roughness of the pipeline.
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| CN117430293A (en) * | 2023-12-18 | 2024-01-23 | 水分子(常州)新材料科技有限公司 | Water level detection device for water treatment and treatment method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117430293A (en) * | 2023-12-18 | 2024-01-23 | 水分子(常州)新材料科技有限公司 | Water level detection device for water treatment and treatment method |
| CN117430293B (en) * | 2023-12-18 | 2024-03-22 | 水分子(常州)新材料科技有限公司 | Water level detection device for water treatment and treatment method |
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