CN210533498U - Liquid level height measuring device, oil testing metering device and oil testing metering system - Google Patents
Liquid level height measuring device, oil testing metering device and oil testing metering system Download PDFInfo
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- CN210533498U CN210533498U CN201922046145.6U CN201922046145U CN210533498U CN 210533498 U CN210533498 U CN 210533498U CN 201922046145 U CN201922046145 U CN 201922046145U CN 210533498 U CN210533498 U CN 210533498U
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Abstract
The application relates to the technical field of petroleum industry, in particular to a liquid level height measuring device, a test oil metering device and a test oil metering system. A liquid level height measuring device comprises a storage box, an insulating buoy, a measuring rod and a resistance measuring assembly; the storage tank is used for storing liquid to be detected, and the insulating buoy is positioned on the liquid level of the liquid to be detected; the measuring rod is connected with the insulating buoy and extends along a first direction, part of the measuring rod is connected with the resistance measuring component to form a closed loop, and the resistance measuring component is used for measuring the resistance value of the part of the measuring rod, which is connected into the closed loop; the height change of the liquid level of the liquid to be measured can change the length of a closed loop formed by the connection of the measuring rod so as to change the resistance value measured by the resistance measuring component; the device is used for measuring the liquid level height of liquid to be measured, firstly, the resistance value is measured, then, the experimental data table is compared, and finally, the liquid level height at the moment is obtained, so that the continuous and accurate measurement can be realized in the whole testing process.
Description
Technical Field
The application relates to the technical field of oil well metering in the petroleum industry, in particular to a liquid level height measuring device, a test oil metering device and a test oil metering system.
Background
The oil testing engineering of the horizontal well is the key of the achievement of shale oil exploration, and the measurement of oil-water yield is important for analyzing the reservoir formation condition and guiding the subsequent production.
At present, when oil testing operation of a single well is carried out in an oil enterprise, a manual liquid level measuring method is generally adopted, a metering person stands on an oil testing tank, a steel ruler is used for measuring liquid level increase in the oil testing tank in unit time, liquid production amount in unit time is calculated and recorded, then standing is carried out for a period of time, oil and water are separated, water is discharged from the bottom of the oil testing tank, an oil-water boundary point is determined through manual observation, when oil discharge is started to occur at an outlet at the bottom of the oil testing tank, a bottom liquid discharge valve is immediately closed, the height of the oil level in the oil testing tank is measured by the steel ruler, and the oil production amount in unit time is calculated and recorded.
SUMMERY OF THE UTILITY MODEL
The application aims to provide a liquid level height measuring device, a test oil metering device and a test oil metering system, and solves the technical problems that when single-well test oil operation is carried out in the prior art, the measurement precision is low and continuous measurement cannot be carried out due to the fact that an artificial liquid level measuring method is adopted usually to a certain extent.
The application provides a liquid level height measuring device which comprises a storage box, an insulating buoy, a measuring rod and a resistance measuring assembly;
the storage tank is used for storing liquid to be detected, and the insulating buoy is positioned on the liquid level of the liquid to be detected;
the measuring rod is connected with the insulating buoy and extends along a first direction; the part of the measuring rod is connected with the resistance measuring component to form a closed loop, and the resistance measuring component is used for measuring the resistance value of the part of the measuring rod, which is connected into the closed loop; the height change of the liquid level of the liquid to be measured can change the length of the measuring rod connected into the closed loop so as to change the resistance value measured by the resistance measuring component;
the first direction and the horizontal plane form a preset included angle.
In the above technical solution, further, the resistance measuring assembly includes a probe, a conductive connecting rod, and a resistance measuring member;
one end of the conductive connecting rod is connected with the measuring rod, and the other end of the conductive connecting rod is connected with the first electrode of the resistance measuring component; one end of the probe is connected with the second electrode of the resistance measuring component, the other end of the probe is arranged on the measuring rod in a sliding mode, and the probe, the conductive connecting rod, the resistance measuring component and a part of the measuring rod between the probe and the conductive connecting rod form a closed loop;
when the liquid level of the storage tank changes, the insulating buoy drives the measuring rod to displace along a first direction, and the position of the probe on the measuring rod is changed, so that the resistance value of the resistor connected to the closed loop changes.
In the above technical solution, the resistance measuring means further includes a power supply and an ammeter connected to the power supply, the power supply has a predetermined voltage, a first resistance value connected to the closed circuit when the liquid level is at the first position can be calculated from a current value displayed by the ammeter, and a liquid level height when the liquid is at the first position can be calculated from the first resistance value.
In the above technical scheme, further, an end cover is arranged at the upper part of the storage box, and a liquid inlet is arranged at the top of the storage box; the liquid enters the storage tank through the liquid inlet;
the end cover is provided with an exhaust hole, and when the liquid enters the storage tank through the liquid inlet, the exhaust hole is used for exhausting gas in the storage tank out of the storage tank;
the end cover is provided with a through hole, and the measuring rod can extend out of the storage box through the through hole.
In the above technical solution, further, the resistance measuring member further includes a positioning member and a conductive connecting ring;
one end of the conductive connecting ring is connected with the conductive connecting rod, and the other end of the conductive connecting ring is connected into the closed loop through a wire;
one end of the positioning piece is arranged on the end cover, and the other end of the positioning piece extends along the first direction and penetrates through the conductive connecting ring; the positioning piece is used for fixing the probe and the conductive connecting rod.
In the above technical solution, further, the measuring device further includes a limiting member, the limiting member is disposed at the through hole and is used for sleeving the measuring rod; the limiting part is used for fixing the measuring rod so that the measuring rod extends along the first direction.
In the above technical solution, the liquid level measuring device further includes a calculating device, the calculating device is connected to the ammeter, and the calculating device can read the indication number of the ammeter and calculate the height of the liquid level.
The application provides a test oil metering device which comprises the liquid level height measuring device, wherein the bottoms of the two storage tanks are communicated through a channel, one of the storage tanks is used for inputting oil-water mixed liquid, and after the oil-water mixed liquid is layered, lower-layer water can partially enter the other storage tank through the channel; the resistance measuring assembly arranged in the storage tank filled with the oil-water mixed liquid can detect a first liquid level height of the oil-water mixed liquid, and the resistance measuring assembly arranged in the storage tank filled with water can detect a second liquid level height of the water.
In the above technical scheme, further, a water outlet is arranged at the bottom of the storage box filled with water.
The application also provides a test oil metering system, which comprises the test oil metering device.
Compared with the prior art, the beneficial effect of this application is:
the application provides a liquid level height measuring device which comprises a storage box, an insulating buoy, a measuring rod and a resistance measuring assembly; the storage tank is used for storing liquid to be detected, and the insulating buoy is positioned on the liquid level of the liquid to be detected;
the measuring rod is connected with the insulating buoy and extends along a first direction, a preset included angle is formed between the first direction and the horizontal plane, the first direction is preferably a vertical upward direction (the vertical upward direction conforms to the principle of conventional use), and the included angle between the first direction and the horizontal plane is preferably 90 degrees.
The part of the measuring rod is connected with the resistance measuring component to form a closed loop, and the resistance measuring component is used for measuring the resistance value of the part of the measuring rod, which is connected into the closed loop; the height change of the liquid level of the liquid to be measured can change the length of the measuring rod connected into the closed loop so as to change the resistance value measured by the resistance measuring component; i.e. when the measuring rod is connected into the closed circuit, the measuring rod acts as a sliding rheostat.
In the specific actual measurement process: firstly, the liquid level height measuring device is assembled according to the connection relation, then a parameter experiment is carried out on the change of the liquid level height and the resistance value in a laboratory (the purpose of the parameter experiment is to find the relation between the liquid level change and the resistance), and the specific steps are as follows: liquid is poured into the storage tank, when the liquid level rises by 1cm (not only 1cm, but also 1mm, 0.1mm and the like) through observation, the resistance value measured by the resistance measuring component is changed, and the experimental data is recorded, so that the whole experimental data table is obtained (the change rule between the liquid level height and the resistance value can be found through the experimental data). And then the liquid level height of the liquid to be measured is measured by using the device, and the specific operation method is that the measured resistance value is used for contrasting an experimental data table, so that the liquid level height at the moment is obtained, and the continuous and accurate measurement can be realized in the whole test process.
The application also provides a test oil metering device which comprises the liquid level height measuring device, wherein the bottoms of the two storage tanks are communicated through a channel, one of the storage tanks is used for inputting oil-water mixed liquid, and after the oil-water mixed liquid is layered, the lower layer water can partially enter the other storage tank through the channel; the resistance measuring assembly arranged in the storage tank filled with the oil-water mixed liquid can detect the first liquid level height of the oil-water mixed liquid, and the resistance measuring assembly arranged in the storage tank filled with the water can detect the second liquid level height of the water.
Based on the analysis, the oil testing metering device can realize continuous and accurate measurement of the oil testing liquid yield and the oil yield of a single well.
The application also provides a test oil metering system, including above-mentioned test oil metering device, can know based on above-mentioned analysis, test oil metering system simple structure, low cost, convenient to use, maintainability are strong, can realize that single well test oil liquid production volume and the continuous accurate measurement of oil production volume to effectively reduce artifical intensity of labour and safe risk, have good economy and practical value.
Drawings
In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a liquid level height measuring device according to an embodiment of the present disclosure;
FIG. 2 is a schematic structural diagram of a liquid level height measuring device according to a second embodiment of the present application;
FIG. 3 is a schematic structural diagram of a liquid level height measuring device provided in the third embodiment of the present application;
fig. 4 is a schematic structural diagram of a test oil metering device according to a fourth embodiment of the present application.
In the figure: 100-a storage box; 101-an insulating buoy; 102-a measuring rod; 103-a probe; 104-a conductive connecting bar; 105-a power supply; 106-ammeter; 107-end cap; 108-a loading port; 109-a positioning element; 110-a conductive connection ring; 112-a limit stop; 113-a computing device; 114-a drain outlet; 115-a first storage box; 116-a second storage box.
Detailed Description
The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Example one
Referring to fig. 1, the present application provides a liquid level measuring apparatus including a storage tank 100, an insulating buoy 101, a measuring rod 102, and a resistance measuring assembly; the storage tank 100 is used for storing liquid to be detected, and the insulating buoy 101 is located on the liquid level of the liquid to be detected;
the measuring rod 102 is connected to the insulating buoy 101, and the measuring rod 102 extends along a first direction, the first direction and a horizontal plane form a predetermined included angle, and here, the first direction is preferably a vertical upward direction (the vertical upward direction conforms to the conventional use principle), that is, the included angle between the first direction and the horizontal plane is 90 degrees.
The part of the measuring rod 102 is connected with the resistance measuring component to form a closed loop, and the resistance measuring component is used for measuring the resistance value of the part of the measuring rod 102, which is connected into the closed loop; the height change of the liquid level of the liquid to be measured can change the length of the measuring rod 102 connected to the closed loop so as to change the resistance value measured by the resistance measuring component; i.e. when the measuring rod 102 is connected into a closed circuit, the measuring rod 102 acts as a sliding rheostat.
In the specific actual measurement process: firstly, the liquid level height measuring device is assembled according to the connection relation, then a parameter experiment is carried out on the change of the liquid level height and the resistance value in a laboratory (the purpose of the parameter experiment is to find the relation between the liquid level change and the resistance), and the specific steps are as follows: liquid is injected into the storage tank 100, and when the liquid level rises by 1cm (not only 1cm, but also 1mm, 0.1mm and the like) through observation, the change of the resistance value measured by the resistance measuring component is utilized, and the experimental data is recorded, so that the whole experimental data table is obtained (the change rule between the liquid level height and the resistance value can be found through the experimental data). And then measuring the liquid level height of the liquid to be measured by using the device, wherein the specific operation method is that the measured resistance value is used for contrasting an experimental data table, so that the liquid level height at the moment is obtained.
Preferably, considering that the liquid in the tank 100 may conduct electricity, not only the measurement result may be affected, but also a safety hazard may exist, namely, the buoy in the present application adopts the insulated buoy 101, so that the authenticity of the measurement result and the safety of the experimental operation can be ensured when the measuring rod 102 is connected to the closed circuit.
In an optional scheme of the embodiment, the resistance measuring assembly comprises a probe 103, a conductive connecting rod 104 and a resistance measuring component; one end of the conductive connecting rod 104 is connected to the measuring rod 102, and the other end of the conductive connecting rod 104 is connected to the first electrode of the resistance measuring member; one end of the probe 103 is connected to the second electrode of the resistance measuring member, and the other end of the probe 103 is slidably disposed on the measuring rod 102.
Preferably, the other end of the conductive connecting rod 104 is connected to the positive pole of the resistance measuring component, and one end of the probe 103 is connected to the negative pole of the resistance measuring component, that is, the probe 103, the conductive connecting rod 104, the resistance measuring component, and the measuring rod 102 located between the probe 103 and the conductive connecting rod 104 form a closed loop;
preferably, the resistance measuring means includes a power source 105 and an ammeter 106 connected to the power source 105, the power source 105 has a predetermined voltage, a first resistance value connected to the closed circuit when the liquid level is at the first position can be calculated from a current value displayed by the ammeter 106, and a liquid level height when the liquid is at the first position can be calculated from the first resistance value and an experimental data table.
Referring to FIG. 1, the voltage of the conventional power supply 105 is U1The indication of the current shown by the ammeter 106 is I1According to equation 1:
the resistance value can be calculated, and then the liquid level height H can be obtained by comparing the experimental data table1。
When the liquid level of the storage tank 100 changes, the insulating buoy 101 drives the measuring rod 102 to displace along the first direction, and since the position of the probe 103 is always kept unchanged, that is, when the measuring rod 102 moves along the first direction, the probe 103 slides on the measuring rod 102, the position of the probe 103 on the measuring rod 102 is changed, so that the resistance value of the resistor connected to the closed loop changes. By using the formula 1, the resistance of different liquid levels can be calculated, and different liquid level heights can be obtained according to an experimental data table.
Example two
In the second embodiment, the technical contents disclosed in the above embodiments are not described repeatedly, and the contents disclosed in the above embodiments also belong to the contents disclosed in the second embodiment.
Referring to fig. 2, in an alternative scheme of this embodiment, the liquid level height measuring device in this application may measure an oil-water mixed liquid, in order to ensure that when the liquid level height measuring device in this application measures an oil-water mixed liquid capable of volatilizing harmful gases, the safety of an operator is ensured, that is, an end cover 107 is provided on the upper portion of the storage tank 100, and the liquid can be sealed in a closed space by the end cover 107, that is, volatilized toxic gases may not cause harm to the operator.
An inlet 108 is arranged at the top of the storage box 100; a liquid inlet pipe is connected to the liquid inlet 108, and the liquid to be detected enters the storage tank 100 through the liquid inlet pipe; preferably, a valve is arranged on the liquid inlet pipe, and the valve is utilized to control whether the liquid to be detected passes through the section or not.
Further, in order to ensure that when liquid to be detected is injected into the storage tank 100 through the liquid inlet pipe, the air pressure in the storage tank 100 is balanced with the external air pressure, an air exhaust hole is formed in the end cover 107, when the liquid to be detected enters the storage tank 100 through the liquid inlet 108, the air exhaust hole is used for exhausting the air in the storage tank 100 out of the storage tank 100, namely, the air pressure in the storage tank 100 is smaller than the external air pressure, and the liquid to be detected can smoothly enter the storage tank 100.
Further, the end cap 107 is provided with a through hole through which the measuring rod 102 can protrude out of the storage case 100.
EXAMPLE III
In the third embodiment, the improvement is made on the basis of the first embodiment and the second embodiment, the technical contents disclosed in the first embodiment and the second embodiment are not described repeatedly, and the contents disclosed in the first embodiment and the second embodiment also belong to the contents disclosed in the third embodiment.
Referring to fig. 3, in an alternative scheme of this embodiment, as can be seen from an analysis of actual measurement conditions, in an actual use process, the liquid level height measuring device in the present application is connected according to the connection manner of fig. 3, that is, a resistance measuring member is located above the end cap 107 and is arranged in a vertical direction, and in order to ensure that the probe 103 and the conductive connecting rod 104 can have a stable structure, the resistance measuring member further includes a positioning member 109 and a conductive connecting ring 110; one end of the conductive connecting ring is connected with the conductive connecting rod 104, and the other end is connected into the closed loop through a wire;
one end of the positioning member 109 is disposed on the end cap 107, and the other end extends along a first direction and penetrates through the conductive connection ring.
Namely, the positioning member 109 is used to fix and support the probe 103 and the conductive connecting rod 104.
In an optional solution of this embodiment, when the measuring rod 102 passes through the end cap 107, in order to ensure the stability of the measuring rod 102, the liquid level height measuring apparatus further includes a limiting member 112, where the limiting member 112 is disposed at a connection point where the measuring rod 102 passes through the end cap 107, and is configured to sleeve the measuring rod 102; the limiting member 112 is used for fixing the measuring rod 102, so that the measuring rod 102 extends along a first direction.
Preferably, the two limiting members 112 are respectively a first limiting member and a second limiting member, where the first limiting member is disposed along a direction parallel to the end cover 107, and the second limiting member is disposed along a direction perpendicular to the end cover 107, so that not only the measurement rod 102 is fixed in the direction parallel to the end cover 107, but also the measurement rod 102 is fixed in the direction perpendicular to the end cover 107.
In an optional scheme of this embodiment, in order to ensure that the calculation result is not only accurate but also fast in the measurement process, the present application further includes a calculation device 113, where the calculation device 113 is connected to the ammeter 106, and the calculation device can read the indication of the ammeter 106 and calculate the height of the liquid level.
More specifically, the experimental data table obtained in the first embodiment may be recorded in the computing device 113, and then the computing device 113 may calculate the resistance value at this time according to the read indication number of the ammeter 106, and then may directly display the liquid level height of the liquid to be measured at this time according to the experimental data table.
Preferably, the computing device 113 is a computer.
Example four
In the fourth embodiment, the improvement is made on the basis of the first, second and third embodiments, the technical contents disclosed in the first, second and third embodiments are not described repeatedly, and the contents disclosed in the first, second and third embodiments also belong to the contents disclosed in the fourth embodiment.
Referring to fig. 4, a device for measuring the oil level comprises two devices for measuring the liquid level height.
The bottoms of the two storage tanks 100 are communicated through a passage, wherein one storage tank 100 is used for inputting oil-water mixed liquid, and for convenience of description, the storage tank 100 for storing the oil-water mixed liquid is named as a first storage tank 115, because the densities of oil and water are different, namely the oil-water mixed liquid is layered, the lower layer is a water layer, the upper layer is an oil layer, and the water in the lower layer can partially enter the other storage tank 100 through the passage (the storage tank 100 is named as a second storage tank 116); the resistance measuring assembly disposed in the first storage tank 115 filled with the oil-water mixture liquid can detect a first liquid level of the oil-water mixture liquid, and the resistance measuring assembly disposed in the second storage tank 116 filled with the water can detect a second liquid level of the water.
In this embodiment, when the second storage tank 116 filled with water is full, the water can be discharged through the drain port 114 provided at the bottom.
The specific operation steps of this application oil testing metering device are as follows:
the method comprises the following steps: connecting and assembling the test oil metering device according to the figure 4, opening the liquid inlet and closing the water outlet 114;
step two: the oil-water mixed liquid enters the first storage tank 115 through the liquid inlet, two-phase separation is generated under the action of oil-water density difference, the distribution state of the oil and the water is formed in the first storage tank 115, and the water separated from the first storage tank 115 flows into the second storage tank 116 according to the communicating vessel principle until the liquid pressure in the first storage tank 115 and the liquid pressure in the second storage tank 116 are balanced.
Step three: the resistance measuring components in the first storage tank 115 and the resistance measuring components in the second storage tank 116 constitute a closed loop, respectively.
Step three: when the oil-water mixed liquid is injected into the first storage tank 115, the oil-water mixed liquid is separated, the water in the lower layer enters the second storage tank 116, the measuring rod 102 in the first storage tank 115 moves upwards along with the change of the liquid level in the first storage tank 115, so that the resistance in a closed loop changes, the calculating device 113 (which records the experimental data table obtained in the first embodiment into the calculating device 113) can convert the resistance change information into liquid level height information, and the liquid level height H in the first storage tank 115 is displayed in real time2(ii) a The measuring rod 102 in the second storage tank 116 moves upwards along with the liquid level change in the second storage tank 116, which causes the resistance in the closed loop to change, and the calculating device 113 (which records the experimental data table obtained in the first embodiment into the calculating device 113) can convert the resistance change information into liquid level height information, and display the liquid level in the second storage tank 116 in real timeThe height h of the surface.
Step four: height of liquid level H2And the water level H data information passes through a data transmission unit (the data transmission unit in the data transmission unit is a prior art, and specifically is a liquid level H capable of obtaining2And the water level h data information), the calculation device 113 can calculate the amount of the oil-water mixed liquid in the first storage tank 115 and the amount of the water in the second storage tank 116 by calculation, and the specific calculation method is as follows:
according to the principle of communicating vessels, when the pressure in the first storage tank 115 is balanced with the pressure in the second storage tank 116, that is, the pressure of the oil-water mixed liquid in the first storage tank 115 is equal to the pressure generated by the water in the second storage tank 116, that is: equation 2: rhoOilghOil+ρWater (W)g(H2-hOil)＝ρWater (W)gh；
From equation 2, it follows: h isOil＝(H2-h)ρWater (W)/(ρWater (W)-ρOil)；
According to the calculation result of the formula 2, the oil production, the liquid production and the water production in unit time can be calculated, and the calculation formula is as follows:
equation 3: qOil＝hOilS/t；
Equation 4: qLiquid for treating urinary tract infection＝(H2+h)S/t；
Equation 5: qWater (W)＝(H2+h-hOil)S/t；
In the formula: h2Is the height of the liquid level in the first storage tank 115 in m; h height of water surface in the second storage tank 116 in units of m; h isOilRefers to the height of the oil level in the first storage tank 115 in units of m; rhoOilThe unit is the average density of crude oil (the density of crude oil in the same well is a fixed value and can be measured by the physical property analysis of crude oil), and the unit is kg/m3；ρWater (W)The density is the stratum horizontal average density (the density of the stratum water in the same region is a fixed value and can be measured by a stratum water test) in kg/m3；QOil、QLiquid for treating urinary tract infection、QWater (W)Respectively the oil production, the liquid production, the water production of a single well in unit time and unit m3(ii) a S is the firstFloor area of one tank 115 and second tank 116 in m2(ii) a t is unit measurement time, unit min, h in the formulaOilI.e., h in fig. 41。
Step five: the calculating device 113 displays the oil production, liquid production and water production information of the single well in unit time on the display screen in real time and automatically records the information.
Step six: when the second storage tank 116 is full, the vehicle is transported via the drain port 114 to the oilfield compound station for disposal.
EXAMPLE five
In the fifth embodiment, an improvement is made on the basis of the first, second, third and fourth embodiments, technical contents disclosed in the first, second, third and fourth embodiments are not described repeatedly, and contents disclosed in the first, second, third and fourth embodiments also belong to contents disclosed in the fifth embodiment.
The present application further provides an oil testing metering system, which includes the above oil testing metering device, and as can be seen from the descriptions of the first embodiment, the second embodiment, the third embodiment, and the fourth embodiment, the oil testing metering system has stronger practicability. The utility model discloses simple structure, low cost, convenient to use, maintainability are strong, can realize single well oil testing liquid production volume and the continuous accurate measurement of oil production volume to effectively reduce artifical intensity of labour and safe risk, have good economy and practical value.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application. Moreover, those skilled in the art will appreciate that while some embodiments herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the application and form different embodiments.
Claims (10)
1. The liquid level height measuring device is characterized by comprising a storage box, an insulating buoy, a measuring rod and a resistance measuring component;
the storage tank is used for storing liquid to be detected, and the insulating buoy is positioned on the liquid level of the liquid to be detected;
the measuring rod is connected with the insulating buoy and extends along a first direction; the part of the measuring rod is connected with the resistance measuring component to form a closed loop, and the resistance measuring component is used for measuring the resistance value of the part of the measuring rod, which is connected into the closed loop; the height change of the liquid level of the liquid to be measured can change the length of the measuring rod connected into the closed loop so as to change the resistance value measured by the resistance measuring component;
the first direction and the horizontal plane form a preset included angle.
2. The fluid level height measuring device of claim 1, wherein the resistance measuring assembly comprises a probe, a conductive connecting rod, and a resistance measuring member;
one end of the conductive connecting rod is connected with the measuring rod, and the other end of the conductive connecting rod is connected with the first electrode of the resistance measuring component; one end of the probe is connected with the second electrode of the resistance measuring component, the other end of the probe is arranged on the measuring rod in a sliding mode, and the probe, the conductive connecting rod, the resistance measuring component and a part of the measuring rod located between the probe and the conductive connecting rod form the closed loop;
when the liquid level of the storage tank changes, the insulating buoy drives the measuring rod to displace along a first direction, and the position of the probe on the measuring rod is changed, so that the resistance value of the resistor connected to the closed loop changes.
3. The liquid level height measuring device according to claim 2, wherein the resistance measuring means comprises a power source and an ammeter connected to the power source, the power source having a predetermined voltage, a value of a current displayed by the ammeter enabling calculation of a first resistance value connected to the inside of the closed circuit when the liquid level is at the first position, and a liquid level height when the liquid is at the first position through the first resistance value.
4. The liquid level height measuring device according to claim 2, wherein an end cover is arranged at the upper part of the storage tank, and a liquid inlet is arranged at the top of the storage tank; the liquid to be detected enters the storage tank through the liquid inlet;
the end cover is provided with an exhaust hole for exhausting the gas in the storage box out of the storage box;
the end cover is provided with a through hole, and the measuring rod can extend out of the storage box through the through hole.
5. The fluid level height measuring device of claim 4, wherein the resistance measuring member further comprises a positioning member and an electrically conductive connecting ring;
one end of the conductive connecting ring is connected with the conductive connecting rod, and the other end of the conductive connecting ring is connected into the closed loop through a wire;
one end of the positioning piece is arranged on the end cover, and the other end of the positioning piece extends along the first direction and penetrates through the conductive connecting ring; the positioning piece is used for fixing the probe and the conductive connecting rod.
6. The apparatus of claim 4, further comprising a limiting member disposed at the through hole and configured to fit over the measuring rod such that the measuring rod extends in a first direction.
7. The apparatus of claim 3, further comprising a computing device, said computing device being connected to said ammeter, said computing device being capable of reading said ammeter and calculating the height of said liquid level.
8. A test oil metering device, characterized by comprising two liquid level height measuring devices according to any one of claims 4 to 7,
the bottoms of the two storage tanks are communicated through a passage, one of the storage tanks is used for inputting oil-water mixed liquid, and the lower layer water can partially enter the other storage tank through the passage after the oil-water mixed liquid is layered; the resistance measuring assembly arranged in the storage tank filled with the oil-water mixed liquid can detect a first liquid level height of the oil-water mixed liquid, and the resistance measuring assembly arranged in the storage tank filled with water can detect a second liquid level height of the water.
9. The apparatus as set forth in claim 8, wherein a drain port is provided at a bottom of the storage tank filled with water.
10. A test oil metering system comprising the test oil metering device as claimed in claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN113252731A (en) * | 2021-05-17 | 2021-08-13 | 绍兴市上虞区水务环境检测有限公司 | Water cleanliness detection device |
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| CN113252731A (en) * | 2021-05-17 | 2021-08-13 | 绍兴市上虞区水务环境检测有限公司 | Water cleanliness detection device |
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