CN216869717U

CN216869717U - Automatic metering and calibrating device for liquid level meter

Info

Publication number: CN216869717U
Application number: CN202220398874.7U
Authority: CN
Inventors: 赵雨婷; 于萌
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-02-27
Filing date: 2022-02-27
Publication date: 2022-07-01
Anticipated expiration: 2032-02-27

Abstract

The utility model discloses an automatic metering and calibrating device of a liquid level meter, which relates to the technical field of liquid level meter calibration and comprises a calibrating platform and a measured liquid level meter, wherein a liquid storage tank and a measuring container are fixedly arranged at the top of the calibrating platform, a scale window is arranged on the front surface of the measuring container, a liquid pump is fixedly arranged at the top of the liquid storage tank, a liquid pumping pipe and a liquid supply pipe are connected onto the liquid pumping pump, one end of the liquid pumping pipe, which is far away from the liquid supply pipe, extends to the bottom in the liquid storage tank, one end of the liquid supply pipe, which is far away from the liquid pumping pipe, is fixedly communicated with the inside of the measuring container, and a liquid return pipe is arranged at the lower part of the measuring container. The practicability is strong.

Description

Automatic metering and calibrating device for liquid level meter

Technical Field

The utility model relates to the technical field of liquid level meter verification, in particular to an automatic metering verification device for a liquid level meter.

Background

The liquid level measurement is widely carried out in various industries such as petroleum energy, river hydrological observation and monitoring, pharmaceutical and chemical industries, metallurgical manufacturing, water treatment and supply and the like, particularly in the petrochemical industry and the transportation industry, and in the aspects of storage, transportation and trade handing over of petroleum, finished oil, liquid chemical products and the like. Liquid level measuring methods are classified into contact type measuring methods and non-contact type measuring methods according to whether a member in contact with a measuring medium is required when measuring the liquid level. The device for measuring the liquid level is called a level gauge or a level gauge. As a compulsory verification measuring instrument, the measurement accuracy of the liquid level meter directly relates to various economic benefit indexes such as cost accounting, energy saving and the like of an enterprise, however, the enterprise also has the problem of a plurality of measurement errors when using the liquid level meter to measure the liquid level, and the measurement and verification of the liquid level meter used by the enterprise are needed.

However, the existing calibrating device for the liquid level meter still has the following defects:

1. the existing liquid level meter calibrating device has a complex structure and complex operation, and the working efficiency is influenced;

2. the existing liquid level meter calibrating device is not high in calibrating precision, can only calibrate a single type of liquid level meter, and is low in application range.

The prior patent (publication number: CN211717571U) provides an automatic metering and calibrating device for a liquid level meter, which comprises a water storage tank, a measured water tank, a float type liquid level meter, an infrared distance measuring device, a linear lead screw guide rail, a U-shaped connecting rod, a support, the measured liquid level meter, a control device, a mobile phone terminal and a remote monitoring system, wherein a liquid supply pipe and a return pipe are connected between the water storage tank and the measured water tank, and a water pump and a first electromagnetic valve are arranged on the liquid supply pipe. The utility model can automatically detect the liquid level meter, has simple structure, high detection speed and high efficiency, can obtain the standard liquid level value of each detection point by adopting a float type liquid level meter and infrared distance measuring device double liquid level measuring mode, can be compared with the liquid level measuring value of the detected liquid level meter, ensures the detection precision of the liquid level value, can provide detection requirements for a magnetic turning plate liquid level meter, a floating ball liquid level meter, a static pressure type liquid level meter, a radar liquid level meter and an ultrasonic liquid level meter, and has wide application range.

The above-mentioned assay device has the following disadvantages when in use: when the verification work is carried out, the temperature difference between the environment temperature and the medium temperature in the container is required, and the temperature difference between the environment temperature and the medium temperature in the container cannot meet the requirement range due to the fact that a structure for heating the container and the medium is not arranged, so that verification errors are easily caused, and therefore the automatic metering verification device for the liquid level meter is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides an automatic metering and calibrating device for a liquid level meter, which solves the technical problems that the temperature difference between the environment temperature and the medium temperature in a container is required when calibrating work is carried out, and the temperature difference between the environment temperature and the medium temperature in the container cannot meet the required range because a structure for heating the container and the medium is not arranged, so that calibration errors are easily caused.

In order to solve the technical problems, the utility model provides an automatic metering and calibrating device for a liquid level meter, which comprises a calibrating platform and the liquid level meter to be measured, wherein a liquid storage tank and a measuring container are fixedly arranged at the top of the calibrating platform, a scale window is arranged on the front surface of the measuring container, a liquid pumping pump is fixedly arranged at the top of the liquid storage tank, a liquid pumping pipe and a liquid supply pipe are connected onto the liquid pumping pump, one end of the liquid pumping pipe, far away from the liquid supply pipe, extends to the bottom in the liquid storage tank, one end of the liquid supply pipe, far away from the liquid pumping pump, is fixedly communicated with the inside of the measuring container, a liquid return pipe is arranged at the lower part of the measuring container, the other end of the liquid return pipe is fixedly communicated with the inside of the liquid storage tank, an electromagnetic valve is fixedly arranged on the liquid return pipe, a support is fixedly arranged at the top of the measuring container, an electric telescopic rod is fixedly arranged on the support, and the liquid level meter to be measured is arranged at the telescopic end of the electric telescopic rod, the access & exit has been seted up at the top of measuring vessel, examination bench top fixed mounting has the controller, drawing liquid pump, solenoid valve, electric telescopic handle and measured level gauge all with controller electric connection, the top of examination bench still is equipped with the heating mechanism who is used for guaranteeing to measure the inside constancy of temperature of vessel.

Preferably, the heating mechanism comprises a water tank, an electric heating tube, a water pump, a water pumping pipe, a water supply pipe, a heating cavity, a water return pipe and a temperature sensor, the water tank is fixedly mounted at the top of the detection platform, the electric heating tube is fixedly mounted on the inner wall of the water tank, the water pump is fixedly mounted at the top of the water tank, the water pumping pipe and the water supply pipe are connected to the water pump, one end of the water pumping pipe, which is far away from the water pump, extends to the bottom in the water tank, the heating cavity is formed in the side wall of the measurement container, one end of the water supply pipe, which is far away from the water pump, extends to the interior of the heating cavity, the water return pipe is mounted at the lower part of the water tank, one end of the water return pipe, which is far away from the water tank, extends to the interior of the measurement container, the temperature sensor is fixedly mounted at the top of the measurement container, the detection end of the temperature sensor extends to the interior of the measurement container, and the electric heating tube, the water pump and the temperature sensor are all electrically connected with the controller, set up heating mechanism and play the effect to measuring container and the inside liquid medium heating of measuring container, can be with the ambient temperature and the liquid medium temperature control in the measuring container within the within range that meets the requirements, improved the examination precision, avoid causing examination error, the practicality is strong.

Preferably, the liquid filling opening has been seted up to liquid reserve tank upper portion lateral wall, the inside detachable connection of liquid filling opening has the sealing plug, sets up the sealing plug and plays fine sealed effect, avoids liquid medium to leak.

Preferably, the sealing plug is provided with an external thread, the inner wall of the liquid feeding port is provided with an internal thread matched with the external thread, the threaded connection and the disassembly are convenient, the connection is tight, and the sealing plug is prevented from falling off.

Preferably, four adjustable supporting legs, four are installed to the bottom of examination platform adjustable supporting legs set up the four corners department in examination platform bottom respectively, set up the level bar and play the effect that supports fixing device, and can adjust the device into horizontality through the level bar, have improved examination precision.

Preferably, the front side of examination platform is equipped with the level bar, the level bar is located the middle part of examination platform front side, whether the staff observation device of being convenient for examination is in the horizontality.

Preferably, the handle is all installed to the examination platform left and right sides, the handle constitutes fixedly through welding and examination platform, the device transport of being convenient for.

Preferably, the electrothermal tube is made of copper, is spiral and can increase the heating area of water, so that the water is heated more thoroughly and the heating efficiency is improved.

Compared with the related art, the utility model has the following beneficial effects:

1. according to the utility model, the actual temperature of the liquid medium in the measuring container is detected through the temperature sensor, when the temperature difference between the detected actual temperature and the required temperature is too large, the controller controls the electric heating tube and the water pump to be started, the electric heating tube heats water in the water tank, the water pump conveys the heated water to the heating cavity, the effect of heating the liquid medium in the measuring container and the measuring container is achieved, the environmental temperature in the measuring container and the temperature of the liquid medium can be controlled within the range meeting the requirements, the calibration precision is improved, the calibration error is avoided, and the practicability is strong.

2. According to the utility model, the leveling rod arranged at the front side of the verification platform is convenient for a verification worker to observe whether the device is in a horizontal state or not, and the device can be adjusted to be in the horizontal state through the leveling rod, so that the verification precision is improved, and the accuracy of a verification result is prevented from being influenced by external factors.

Drawings

FIG. 1 is a schematic structural diagram of an automatic metrological verification device for a liquid level meter;

FIG. 2 is a schematic cross-sectional view of an automatic gauging and calibrating device for a liquid level meter;

FIG. 3 is a schematic view of a sealing plug structure in an automatic metering and calibrating device of a liquid level meter;

fig. 4 is a schematic sectional structure diagram of a measuring container in the automatic metrological verification device for the liquid level meter.

Reference numbers in the figures: 1. a verification platform; 2. a liquid storage tank; 3. a measuring container; 4. a liquid pump; 5. a liquid pumping pipe; 6. a liquid supply tube; 7. a liquid return pipe; 8. an electromagnetic valve; 9. a support; 10. an electric telescopic rod; 11. a measured liquid level meter; 12. an entrance and an exit; 13. a controller; 14. a sealing plug; 15. a water tank; 16. an electric heating tube; 17. a water pump; 18. a water pumping pipe; 19. a water supply pipe; 20. a heating cavity; 21. a water return pipe; 22. a temperature sensor; 23. adjustable support legs; 24. a level bar; 25. a handle.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are referred to, they refer to the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description, but do not indicate or imply that the device or element 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 invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the first embodiment, as shown in fig. 1-4, an automatic metrological verification apparatus for a liquid level meter comprises a verification platform 1 and a measured liquid level meter 11, a liquid storage tank 2 and a measurement container 3 are fixedly mounted on the top of the verification platform 1, a calibration window is disposed on the front surface of the measurement container 3, a liquid pumping pump 4 is fixedly mounted on the top of the liquid storage tank 2, a liquid pumping pipe 5 and a liquid supply pipe 6 are connected to the liquid pumping pump 4, one end of the liquid pumping pipe 5, which is far away from the liquid supply pipe 6, extends to the bottom inside the liquid storage tank 2, one end of the liquid supply pipe 6, which is far away from the liquid pumping pump 4, is fixedly communicated with the inside of the measurement container 3, a liquid return pipe 7 is mounted on the lower portion of the measurement container 3, the other end of the liquid return pipe 7 is fixedly communicated with the inside of the liquid storage tank 2, a solenoid valve 8 is fixedly mounted on the liquid return pipe 7, a support 9 is fixedly mounted on the top of the measurement container 3, an electric telescopic rod 10 is fixedly mounted on the support 9, the measured liquid level meter 11 is mounted on the telescopic rod 10, the top of the measuring container 3 is provided with an access 12, the top of the verification platform 1 is fixedly provided with a controller 13, the liquid pump 4, the electromagnetic valve 8, the electric telescopic rod 10 and the measured liquid level meter 11 are electrically connected with the controller 13, the top of the verification platform 1 is also provided with a heating mechanism for ensuring the constant temperature inside the measuring container 3, the heating mechanism comprises a water tank 15, an electric heating pipe 16, a water pump 17, a water pumping pipe 18, a water supply pipe 19, a heating cavity 20, a water return pipe 21 and a temperature sensor 22, the water tank 15 is fixedly arranged at the top of the verification platform 1, the electric heating pipe 16 is fixedly arranged on the inner wall of the water tank 15, the top of the water tank 15 is fixedly provided with the water pump 17, the water pumping pipe 18 and the water supply pipe 19 are connected to the water pump 17, one end of the water pumping pipe 18, far away from the water pump 17, extends to the inner bottom of the water tank 15, the side wall of the measuring container 3 is provided with the electric heating cavity 20, one end of the water supply pipe 19, far away from the water pump 17, extends to the heating cavity 20, water return pipe 21 is installed to 15 lower parts of water tank, water return pipe 21 keeps away from that one end of water tank 15 extends to heating chamber 20 inside, it has temperature sensor 22 to measure 3 top fixed mounting of container, temperature sensor 22's sense terminal extends to the inside of measuring container 3, electrothermal tube 16, water pump 17 and temperature sensor 22 all with controller 13 electric connection, it plays the effect to measuring container 3 and the heating of the inside liquid medium of measuring container 3 to set up heating mechanism, can be with the ambient temperature in the measuring container 3 with liquid medium temperature control within the within range that meets the requirements, the precision of examination has been improved, avoid causing the examination error, therefore, the clothes hanger is strong in practicability.

Second, on the basis of first embodiment, the filling opening has been seted up to 2 upper portion lateral walls of liquid reserve tank, and the inside detachable of filling opening is connected with sealing plug 14, sets up sealing plug 14 and plays fine sealed effect, avoids liquid medium to leak.

Third embodiment, on the basis of second embodiment, be equipped with the external screw thread on the sealing plug 14, the inner wall of filling opening is equipped with the internal thread with external screw thread looks adaptation, and threaded connection dismantles conveniently, and connects the fastening, prevents that sealing plug 14 from droing.

Fourth embodiment, on the basis of first embodiment, four adjustable supporting legs 23 are installed to the bottom of examination platform 1, and four adjustable supporting legs 23 set up the four corners department in examination platform 1 bottom respectively, set up level 24 and play the effect of supporting fixing device, and can adjust the device to the horizontality through level 24, have improved examination precision.

Fifth embodiment, on the basis of the first embodiment, a horizontal ruler 24 is arranged on the front side of the calibration platform 1, and the horizontal ruler 24 is located in the middle of the front side of the calibration platform 1, so that a calibrator can conveniently observe whether the device is in a horizontal state.

In the sixth embodiment, on the basis of the first embodiment, the handles 25 are installed on both the left and right sides of the certification platform 1, and the handles 25 are fixed to the certification platform 1 by welding, so that the device is convenient to carry.

In the seventh embodiment, on the basis of the first embodiment, the electric heating tube 16 is made of copper, and the electric heating tube 16 is spiral, so that the heating area of the water can be increased, the water can be heated more thoroughly, and the heating efficiency is improved.

The working principle is as follows: when the device is used, the sealing plug 14 is screwed out of the liquid filling port, then liquid medium is added into the liquid storage tank 2 from the liquid filling port, the liquid pump 4 is controlled by the controller 13 to be started, the liquid pump 4 drives the liquid pumping pipe 5 to pump the liquid medium in the liquid storage tank 2 into the liquid supply pipe 6, then the liquid medium is conveyed into the measuring container 3 through the liquid supply pipe 6, the liquid pumping pump 4 is closed after the liquid level is added, after the liquid level is calm, the actual liquid level numerical value in the measuring container 3 is observed and recorded through a scale window arranged on the measuring container 3, then the controller 13 controls the electric telescopic rod 10 to extend, the electric telescopic rod 10 pushes the measured liquid level meter 11 to extend into the measured liquid level meter 11 from the inlet and outlet 12, after the measured liquid level meter 11 reaches a designated detection position, the measured liquid level meter 11 transmits the detected numerical value to the controller 13, and a worker records the numerical value displayed on the controller 13, and comparing with the standard liquid level value obtained by observation to obtain a verification result, if the comparison result between the two values is consistent, the value display of the measured liquid level meter 11 is accurate, if the comparison result between the two values is inconsistent, the value display of the measured liquid level meter 11 is inaccurate, after the verification is finished, the controller 13 controls the electromagnetic valve 8 to be opened, the liquid medium flows back to the inside of the liquid storage tank 2 through the liquid return pipe 7, in the verification process, the actual temperature of the liquid medium in the measuring container 3 is detected through the temperature sensor 22, when the temperature difference between the detected actual temperature and the required temperature is overlarge, the controller 13 controls the electric heating pipe 16 and the water pump 17 to be started, the electric heating pipe 16 heats the water in the water tank 15, the water pump 17 conveys the heated water to the inside of the heating cavity 20, the effect of heating the liquid medium in the measuring container 3 and the measuring container 3 is achieved, the environmental temperature in the measuring container 3 and the liquid medium temperature can be controlled within the range meeting the requirements, the calibration precision is improved, calibration errors are avoided, and the practicability is high.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a level gauge automatic measurement calibrating installation, includes examination platform (1) and surveyed level gauge (11), its characterized in that, the top fixed mounting of examination platform (1) has liquid reserve tank (2) and measuring vessel (3), the front of measuring vessel (3) is equipped with the scale window, the top fixed mounting of liquid reserve tank (2) has drawing liquid pump (4), be connected with drawing liquid pipe (5) and feed pipe (6) on drawing liquid pump (4), the one end that feed pipe (6) were kept away from in drawing liquid pipe (5) extends to liquid reserve tank (2) bottom in, the one end that drawing liquid pump (4) were kept away from in feed pipe (6) and the inside fixed intercommunication of measuring vessel (3), return liquid pipe (7) is installed to measuring vessel (3) lower part, return the inside fixed intercommunication of liquid pipe (7) other end and liquid reserve tank (2), fixed mounting has solenoid valve (8) on return liquid pipe (7), the utility model discloses a calibrating device, including measuring container (3), the top fixed mounting who measures container (3) has support (9), fixed mounting has electric telescopic handle (10) on support (9), the flexible end in electric telescopic handle (10) is installed by survey level gauge (11), access & exit (12) have been seted up at the top of measuring container (3), calibrating platform (1) top fixed mounting has controller (13), drawing liquid pump (4), solenoid valve (8), electric telescopic handle (10) and measured level gauge (11) all with controller (13) electric connection, the top of calibrating platform (1) still is equipped with and is used for guaranteeing to measure the invariable heating mechanism of container (3) inside temperature.

2. The automatic metering and calibrating device for the liquid level meter according to claim 1, wherein the heating mechanism comprises a water tank (15), an electric heating tube (16), a water pump (17), a water pumping tube (18), a water supply tube (19), a heating cavity (20), a water return tube (21) and a temperature sensor (22), the water tank (15) is fixedly installed at the top of the calibrating platform (1), the electric heating tube (16) is fixedly installed on the inner wall of the water tank (15), the water pump (17) is fixedly installed at the top of the water tank (15), the water pumping tube (18) and the water supply tube (19) are connected to the water pump (17), one end of the water pumping tube (18) far away from the water pump (17) extends to the inner bottom of the water tank (15), the heating cavity (20) is formed in the side wall of the measuring container (3), one end of the water supply tube (19) far away from the water pump (17) extends to the inside of the heating cavity (20), return pipe (21) are installed to water tank (15) lower part, return pipe (21) are kept away from the one end of water tank (15) and are extended to heating chamber (20) inside, it has temperature sensor (22) to measure container (3) top fixed mounting, the sense terminal of temperature sensor (22) extends to the inside of measuring container (3), electrothermal tube (16), water pump (17) and temperature sensor (22) all with controller (13) electric connection.

3. The automatic metrological verification device of liquid level meter according to claim 1, characterized in that the lateral wall of the upper part of the liquid storage tank (2) is provided with a liquid filling opening, and a sealing plug (14) is detachably connected to the inside of the liquid filling opening.

4. The automatic metrological verification device of claim 3, wherein the sealing plug (14) is provided with an external thread, and the inner wall of the filling opening is provided with an internal thread matched with the external thread.

5. The automatic metrological verification device of a liquid level meter according to claim 1, characterized in that four adjustable supporting legs (23) are installed at the bottom of the verification platform (1), and the four adjustable supporting legs (23) are respectively arranged at four corners of the bottom of the verification platform (1).

6. The automatic metrological verification device of a liquid level meter as claimed in claim 1, characterized in that the front side of said verification platform (1) is provided with a level (24), said level (24) being located in the middle of the front side of the verification platform (1).

7. The automatic metrological verification device of a liquid level meter according to claim 1, characterized in that handles (25) are installed on the left and right sides of the verification platform (1), and the handles (25) are fixed with the verification platform (1) through welding.

8. The automatic metrological verification device of claim 2, wherein said electric heating tube (16) is made of copper, and said electric heating tube (16) is spiral.