CN217033480U - Glass floating meter verification liquid preparation device - Google Patents
Glass floating meter verification liquid preparation device Download PDFInfo
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- CN217033480U CN217033480U CN202220658119.8U CN202220658119U CN217033480U CN 217033480 U CN217033480 U CN 217033480U CN 202220658119 U CN202220658119 U CN 202220658119U CN 217033480 U CN217033480 U CN 217033480U
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Abstract
The utility model belongs to the scientific field of measurement and metering, and particularly relates to a glass float meter verification liquid preparation device which comprises a mixing barrel, wherein a barrel cover is arranged on the mixing barrel, the mixing barrel is arranged on an electronic scale, a stirring rod is arranged in the mixing barrel, the stirring rod penetrates through the barrel cover to be connected with a lifting device, and the lifting device is connected with a fixed support; one end of each pipeline is arranged in the mixing barrel, the other end of each pipeline is arranged in a liquid storage device, a detection liquid raw material is arranged in the liquid storage device, peristaltic pumps are arranged on the pipelines, and at least two liquid storage devices are arranged; the device aims at automatically preparing the liquid for the verification of the floating meter in a non-contact manner, ensures the working safety and improves the preparation accuracy and the working efficiency.
Description
Technical Field
The utility model belongs to the field of measurement and measurement science, and particularly relates to a glass float meter calibration liquid preparation device.
Background
The glass float meter is used for measuring the density of liquid, is widely used in the industries of chemical industry, petroleum and the like, and needs to be checked/calibrated regularly in order to ensure the accuracy of the measurement result of the glass float meter.
According to the verification of the glass float meter, according to the verification rules of the standard glass float meter of JJJG 86-2011 and the verification rules of the working glass float meter of JJJG 42-2011, the liquid for detecting the float meter in different measuring ranges is different and comprises petroleum product mixed liquid, alcohol aqueous solution, ethyl hydrogen sulfate, sulfuric acid aqueous solution and the like, more than 80 kinds of detection liquid with different densities are needed to be prepared for verifying one set of second-class float meter, the preparation amount of each detection liquid is about 3L, the preparation method of the density of the detection liquid is that the detection liquid between the densities of two kinds of liquid can be prepared by using two liquids with known densities, and the calculation method is shown in formulas (1), (2) and (3).
ρV＝ρ1V1+ρ2V2 (1)
V≈V1+V2 (2)
The two formulas are combined to obtain:
V1/V2＝(ρ2-ρ)/(ρ-ρ1) (3)
in the formula:
rho is the density of the test solution to be prepared, and is a known quantity;
v, the volume of the test solution to be prepared is a known amount;
ρ 1-the density of the liquid for preparation (lower than the density of the detection liquid to be prepared) is a known amount;
v1, the density is rho 1 to be prepared into the volume of the calibration solution;
ρ 2-the density of the liquid for preparation (higher than the density of the detection liquid to be prepared) is a known amount;
v2-density is rho 2 volume of the to-be-prepared testing liquid.
The target assay solution was prepared using the volume ratio of the two liquids according to equation (3). In compounding, a common method is to dose a liquid volume using a measuring cylinder. Problems with the current formulation process include: 1) the volume of the liquid is measured by using a measuring cylinder, the error is large, the temperature is different, the difference of the volume of the liquid is large, the difference of the density of the prepared verification liquid and a target value is large, the target value can be adjusted only by repeated blending, the preparation process is repetitive labor, and the workload is large; 2) the raw materials of the detection liquid are petroleum products, ethanol, sulfuric acid and the like, the volatility of the detection liquid is strong, the detection liquid is harmful to human bodies and pollutes the environment, the corrosion of the detection liquid is strong, and especially in the process of preparing the detection liquid which releases heat, such as ethyl hydrogen sulfate, if the stirring is not uniform, local overheating can cause bumping and even explosion, and certain danger is generated.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model provides a preparation device of a glass float meter verification liquid, which aims to automatically prepare a liquid for float meter verification in a non-contact manner, guarantee the working safety and improve the preparation accuracy and the working efficiency.
The technical scheme of the utility model is as follows:
a glass float meter calibration liquid preparation device comprises a mixing barrel, wherein a barrel cover is arranged on the mixing barrel, the mixing barrel is arranged on an electronic scale, a stirring rod is arranged in the mixing barrel, the stirring rod penetrates through the barrel cover to be connected with a lifting device, and the lifting device is connected with a fixed support; one end of each pipeline is arranged in the blending barrel, the other end of each pipeline is arranged in the liquid storage device, the liquid storage device is internally provided with a detection liquid raw material, the pipelines are provided with peristaltic pumps, and at least two liquid storage devices are arranged; the blending barrel, the electronic scale, the lifting device and the peristaltic pump are electrically connected with the controller.
Preferably, the bottom of the stirring rod is a planar helical structure.
Preferably, the lifting device is a hydraulic cylinder, a telescopic rod of the hydraulic cylinder is connected with the stirring rod, the hydraulic cylinder is fixedly connected with the fixed support, the fixed position of the hydraulic cylinder is unchanged, and the telescopic rod can stretch and retract to drive the stirring rod to move up and down.
Further preferably, the hydraulic cylinder is electrically connected to the controller.
Preferably, a temperature sensor is arranged on the barrel cover and electrically connected with the controller.
Further preferably, the controller is electrically connected to an alarm.
Preferably, the controller utilizes a PLC control system.
Preferably, the pipeline is tightly attached to the inner wall of the blending barrel.
Preferably, the conduit is a polytetrafluoroethylene tube.
Preferably, the stir bar is a glass or polytetrafluoroethylene material.
Preferably, replace elevating gear for the motor, motor fixed connection fixed bolster, the stirring rod is connected to the dwang of motor, and the motor can drive the stirring rod and rotate for liquid stirring.
The method comprises the following steps of preparing the verification liquid with determined density, quality and volume according to the known verification liquid raw material, wherein a commonly used preparation device in the prior art is prepared by using a measuring cylinder, and has large error; meanwhile, the stirring rod is arranged in the blending barrel, so that blending is facilitated, heat dissipation is increased, and danger is reduced; through the PLC system in the controller, signal transmission is given to the controller through electronic scale, temperature sensor, and the controller is favorable to in time controlling peristaltic pump to open and stop, and the stirring rod that elevating gear drove reciprocates.
The utility model has the beneficial effects that:
(1) the liquid is weighed by the electronic scale, so that the error caused by volume measurement is reduced, the times of repeatedly preparing the calibration liquid are reduced, the time is saved, the labor intensity is reduced, and the working efficiency is improved;
(2) the method has the advantages that various calibration solutions can be automatically prepared in a non-contact manner, the environment is not polluted, the peristaltic pump is adopted for sucking liquid, the pipeline is easy to replace, and the calibration solutions are not easy to pollute;
(3) the automatic preparation of the verification liquid is realized, and the preparation safety is improved;
(4) simple structure, the suitability is strong, can be applied to the preparation of different mixed liquids.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic view of the construction of the stirring rod of the present invention;
in the figure, 1 is an electronic scale, 2 is a blending barrel, 3 is a controller, 4 is a peristaltic pump, 5 is a lifting device, 6 is a stirring rod, 7 is a liquid storage device, 8 is a pipeline, 9 is a detection liquid raw material, 10 is a temperature sensor, 11 is a barrel cover, and 12 is an alarm.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
As shown in fig. 1-2, a glass float meter verification liquid preparation device includes a blending barrel 2, a barrel cover 11 is disposed on the blending barrel 2, the blending barrel 2 is disposed on an electronic scale 1, a stirring rod 6 is disposed in the blending barrel 2, the stirring rod 6 is made of glass or polytetrafluoroethylene, the stirring rod 6 penetrates through the barrel cover 11 and is connected with a lifting device 5, the lifting device 5 is connected with a fixing support, the lifting device 5 is fixed on the fixing support (the fixing support mainly plays a role of fixing the lifting device and is not shown in the figure), the lifting device 5 drives the stirring rod 6 to move up and down, the bottom of the stirring rod 6 is of a planar spiral structure, the area of the planar spiral structure contacting with liquid is large, solution blending is facilitated, and the lifting device 5 mainly controls up and down movement of the stirring rod 6 to accelerate solution blending; one end of a pipeline 8 penetrates through a barrel cover 11 and is arranged in the mixing barrel 2, the pipeline 8 is tightly attached to the inner wall of the mixing barrel 2, the other end of the pipeline 8 is arranged in a liquid storage device 7, a detection liquid raw material 9 is arranged in the liquid storage device 7, peristaltic pumps 4 are arranged on the pipelines 8, two liquid storage devices 7 are arranged, each liquid storage device 7 (different liquid storage devices 7 store different detection liquid raw materials) corresponds to one pipeline 8, two ends of each pipeline 8 are arranged in the mixing barrel 2 and the liquid storage devices 7 respectively, the pipelines 8 can share one peristaltic pump 4 (one pipeline can transport the detection liquid raw material when transporting is finished, and the other pipeline transports the detection liquid raw material again, so that one peristaltic pump 4 can be shared), or one pipeline 8 can correspond to one peristaltic pump 4, and the detection liquid raw material 9 is contained in the liquid storage device 7; the blending barrel 2, the electronic scale 1, the lifting device 5 and the peristaltic pump 4 are electrically connected with the controller 3.
In the utility model, the lifting device 5 is a hydraulic cylinder, the hydraulic cylinder is electrically connected with the controller 3, the telescopic rod of the hydraulic cylinder is connected with the stirring rod 6, the hydraulic cylinder is fixedly connected with the fixing support, the fixing support is used for fixing the position of the hydraulic cylinder, so that the position of the hydraulic cylinder is not changed, and the lifting device 5 can also select other lifting devices 5 in the prior art.
For the situation that violent heat release occurs when the verification liquid is prepared, the barrel cover 11 is provided with the temperature sensor 10, the temperature sensor 10 is electrically connected with the controller 3, the controller 3 is electrically connected with the alarm 12, if the temperature is required to be controlled when the ethyl hydrogen sulfate verification liquid is prepared, the temperature of the solution is increased due to the fact that concentrated sulfuric acid is added into an alcohol water solution during preparation, the temperature is easily over 40 ℃, the solution is carbonized by sulfuric acid, becomes black and even boils explosively, and has certain danger and does not meet the preparation requirement, so 40 ℃ is reached, the temperature sensor 10 transmits a signal to the controller 3, the controller 3 controls the peristaltic pump 4 to stop working, the sulfuric acid is stopped when the temperature is reduced, the temperature sensor 10 transmits the signal to the controller 3, the controller 3 controls the peristaltic pump 4 to work, the sulfuric acid is continuously added until the addition amount of the sulfuric acid is reached, the electronic scale transmits the signal to the controller 3, and the controller 3 controls the peristaltic pump 4 to stop working, other calibration solutions are prepared without obvious temperature rise, and a temperature sensor is not needed to be used for controlling the temperature; when the temperature in the blending barrel 2 rises to a high level, the temperature sensor 10 transmits a signal to the controller 3, the controller 3 controls the peristaltic pump 4 to stop working, and the controller 3 controls the alarm 12 to send an alarm signal.
In the present invention, the controller 3 utilizes a PLC control system.
The polytetrafluoroethylene tube is selected as the pipeline 8 because the raw material 9 of the detection liquid has strong corrosiveness.
In another embodiment, the lifting device 5 is replaced by a motor, the motor is fixedly connected with a fixed support, the rotating rod of the motor is connected with the stirring rod 6, and the stirring rod 6 is driven to rotate by the rotation of the motor, so that the solution is uniformly mixed.
According to the utility model, the electronic scale 1 is arranged at the bottom of the blending barrel 2, the quality of the verification liquid raw material 9 added into the blending barrel 2 is accurately controlled, and the verification liquid raw material 9 is moved from the liquid storage device 7 to the blending barrel 2 by using the peristaltic pump 4, so that manual operation is avoided, errors are reduced, the working strength is reduced, and harm to a human body is avoided; meanwhile, the stirring rod 6 is arranged in the blending barrel 2, so that blending is facilitated, heat dissipation is increased, and danger is reduced; through the PLC system in the controller 3, the controller 3 is transmitted with signals through the electronic scale 1 and the temperature sensor 10, and the controller 3 is favorable for controlling the peristaltic pump 4 to start and stop in time and the stirring rod 6 driven by the lifting device 5 to move up and down.
In the actual operation process, after the device is installed, when the verification liquid is prepared, the electronic scale 1 is reset, parameters are set on the PLC 3, one of the peristaltic pumps 4 starts to work, the peristaltic pump 4 rotates in the forward direction, the pipeline 8 conveys the verification liquid raw material 9 in the liquid storage device 7 to the mixing barrel 2, after the verification liquid raw material 9 with certain quality is conveyed, the electronic scale 1 transmits a signal to the PLC 3, the PLC 3 controls the peristaltic pump 4 to stop working, then one end of the pipeline 8 in the mixing barrel 2 is moved out of the mixing barrel 2, the PLC 3 controls the peristaltic pump 4 to rotate in the reverse direction, and after the liquid remaining in the pipeline 8 flows back to the original liquid storage device 7, the PLC 3 controls the peristaltic pump 4 to stop working; the PLC 3 controls the lifting device 5 to drive the stirring rod 6 to move up and down, then another new pipeline 8 is arranged, two ends of the pipeline 8 are respectively arranged in another liquid storage device 7 containing a detection raw material and in the blending barrel 2, the pipeline 8 is tightly attached to the inner wall of the blending barrel 2, the electronic scale 1 is reset, the PLC 3 controls the peristaltic pump 4 to be started, the peristaltic pump 4 rotates forwards, the pipeline 8 conveys the detection liquid raw material 9 in the liquid storage device 7 to the blending barrel 2, after the detection liquid raw material 9 with certain quality is conveyed, the electronic scale 1 transmits a signal to the PLC 3, the PLC 3 controls the peristaltic pump 4 to stop working, then one end of the pipeline 8 in the blending barrel 2 is moved out of the blending barrel 2, the PLC 3 controls the peristaltic pump 4 to rotate reversely, and after the liquid remaining in the pipeline 8 flows back to the original liquid storage device 7, the PLC 3 controls the peristaltic pump 4 to stop working; after the materials in the blending barrel 2 are uniformly mixed, the PLC 3 controls the lifting device 5 to stop working, and the preparation of the verification liquid is completed.
In the actual operation process, when the verification liquid is prepared and violent heat release occurs, the barrel cover of the blending barrel 2 is connected with the temperature sensor 10, when the temperature is too high, the temperature sensor 10 transmits a signal to the PLC 3, the PLC 3 controls the peristaltic pump 4 to stop working, when the temperature is reduced to the proper temperature, the temperature sensor 10 transmits the signal to the PLC 3, and the PLC 3 controls the peristaltic pump 4 to continue working; when the temperature is high enough to cause explosion easily, the temperature sensor 10 transmits a signal to the controller 3, the controller 3 controls the peristaltic pump 4 to stop working, and the controller 3 simultaneously controls the alarm 12 to send an alarm signal; the rest operations are the same as those in the case of no violent heat release during the preparation of the detection liquid
In the actual operation process, when more than two types of the raw materials 9 of the verification liquid are present, the corresponding number of the liquid reservoirs 7 is set according to the types of the raw materials 9 of the verification liquid, the required raw materials 9 of the verification liquid are stored in the liquid reservoirs 7, the operation is the same as the actual operation process, and the process of adding the raw materials 9 of the verification liquid into the mixing barrel 2 is repeated on the basis.
According to the utility model, the electronic scale is used for weighing the liquid, so that the error caused by volume measurement is reduced, the frequency of repeatedly blending the density liquid is reduced, the time is saved, the labor intensity is reduced, and the working efficiency is improved; the method has the advantages that various calibration solutions are automatically prepared in a non-contact manner, the environment is not polluted, the peristaltic pump is adopted for sucking liquid, the pipeline is easy to replace, and the calibration solutions are not easy to pollute; the automatic preparation of the verification liquid is realized, and the preparation safety is improved; the device has simple structure and strong applicability, and can be applied to the preparation of different mixed liquids.
Claims (10)
1. A glass float meter verification liquid preparation device comprises a blending barrel (2), wherein a barrel cover (11) is arranged on the blending barrel (2), and is characterized in that the blending barrel (2) is arranged on an electronic scale (1), a stirring rod (6) is arranged in the blending barrel (2), the stirring rod (6) penetrates through the barrel cover (11) to be connected with a lifting device (5), and the lifting device (5) is connected with a fixed support; one end of each pipeline (8) is arranged in the blending barrel (2), the other end of each pipeline is arranged in a liquid storage device (7), a detection liquid raw material (9) is arranged in each liquid storage device (7), peristaltic pumps (4) are arranged on the pipelines (8), and at least two liquid storage devices (7) are arranged; the blending barrel (2), the electronic scale (1), the lifting device (5) and the peristaltic pump (4) are electrically connected with the controller (3).
2. The glass float meter calibration solution preparation device according to claim 1, wherein the bottom of the stirring rod (6) is a plane spiral structure.
3. The glass float meter detection liquid preparation device according to claim 1, wherein the lifting device (5) is a hydraulic cylinder, a telescopic rod of the hydraulic cylinder is connected with the stirring rod (6), and the hydraulic cylinder is fixedly connected with a fixing support.
4. The glass float meter calibration liquid preparation device according to claim 3, wherein the hydraulic cylinder is electrically connected with the controller (3).
5. The glass float meter detection liquid preparation device according to claim 1, wherein a temperature sensor (10) is arranged on the barrel cover (11), and the temperature sensor (10) is electrically connected with the controller (3).
6. The glass float meter calibration solution preparation device according to claim 1 or 5, wherein the controller (3) utilizes a PLC control system.
7. The glass float meter detection liquid preparation device according to claim 5, wherein the controller (3) is electrically connected with an alarm (12).
8. The preparation device of the verification liquid for the glass float meter, according to claim 1, is characterized in that the pipeline (8) is tightly attached to the inner wall of the blending barrel (2).
9. The glass float meter calibration solution preparation device according to claim 1, wherein the pipeline (8) is a polytetrafluoroethylene tube, and the stirring rod (6) is made of glass or polytetrafluoroethylene material.
10. The device for preparing the detection liquid of the glass float meter according to claim 1, characterized in that the lifting device (5) is replaced by a motor, the motor is fixedly connected with a fixed support, and a rotating rod of the motor is connected with the stirring rod (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220658119.8U CN217033480U (en) | 2022-03-24 | 2022-03-24 | Glass floating meter verification liquid preparation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220658119.8U CN217033480U (en) | 2022-03-24 | 2022-03-24 | Glass floating meter verification liquid preparation device |
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| Publication Number | Publication Date |
|---|---|
| CN217033480U true CN217033480U (en) | 2022-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220658119.8U Active CN217033480U (en) | 2022-03-24 | 2022-03-24 | Glass floating meter verification liquid preparation device |
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| CN (1) | CN217033480U (en) |
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- 2022-03-24 CN CN202220658119.8U patent/CN217033480U/en active Active
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