Calibrating device of fluid metering instrument

Abstract

The utility model discloses a calibrating device for a fluid metering instrument, which relates to the technical field of calibrating devices and comprises a placing mechanism, a positioning and connecting mechanism, a measuring liquid circulating mechanism and a calibrating mechanism, and a calibrating mechanism, and is characterized in that the placing mechanism is used for installing the measuring liquid circulating mechanism and the positioning and connecting mechanism; the measuring liquid circulating mechanism is used for conveying measuring liquid to the instrument to be calibrated and the standard instrument; the two positioning connecting mechanisms are located on the two sides of the top of the table board respectively, and each positioning connecting mechanism comprises a positioning base, a flange positioning groove, a U-shaped mounting frame, a double-shaft hydraulic cylinder and an outer sleeve plate. According to the utility model, the calibration instrument can be positioned in the vertical direction, so that the calibration instrument is collinear with the flange at the end part of the measuring liquid input pipe and the flange at the end part of the measuring liquid output pipe, manual supporting and positioning are not needed, the situation of ineffective alignment is avoided while manpower is saved, and the actual calibration effect is ensured.

Description

Technical Field

[0001] This utility model relates to the field of calibration device technology, and in particular to a calibration device for fluid metering instruments. Background Technology

[0002] Fluid measuring instruments can measure various data of fluids in pipelines. Before leaving the factory and after a certain period of use, fluid measuring instruments need to be calibrated to ensure their measuring accuracy.

[0003] A search revealed that utility model patent CN220853793U discloses a calibration device for a fluid metering instrument, comprising: a mobile calibration unit, which includes a load-bearing plate and a support frame fixedly connected to the load-bearing plate; and a quick assembly unit, which includes a water tank fixedly connected to the load-bearing plate and a pump body fixedly connected to the upper surface of the load-bearing plate.

[0004] However, the above-mentioned device still has some shortcomings in actual use. The most obvious one is that the instrument to be tested lacks vertical positioning. Therefore, in the actual connection process, the operator needs to manually support and position it, which is not only labor-intensive, but also prone to the situation that the instrument to be tested and the connecting pipe are not effectively aligned, thus affecting the actual testing effect.

[0005] Therefore, it is necessary to invent a calibration device for fluid metering instruments to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a calibration device for fluid measuring instruments, which can vertically position the instrument to be calibrated, thereby ensuring that it is collinear with the flanges at the ends of the measuring liquid inlet and outlet pipes. This eliminates the need for manual support and positioning, saving manpower and preventing misalignment, thus guaranteeing the actual calibration effect. This addresses the problem in the background art where the instrument to be calibrated lacks vertical positioning, requiring manual support and positioning during connection, which is labor-intensive and prone to misalignment between the instrument and the connecting pipe, affecting the actual calibration effect.

[0007] According to one aspect of this disclosure, the following technical solution is provided: a calibration device for fluid metering instruments, comprising:

[0008] A placement mechanism for installing the measuring liquid circulation mechanism and the positioning connection mechanism;

[0009] Measuring fluid circulation mechanism, wherein the measuring fluid circulation mechanism is used to supply measuring fluid to the instrument to be calibrated and the standard instrument; and

[0010] Two sets of positioning and connecting mechanisms are located on both sides of the top of the table. Each positioning and connecting mechanism includes a positioning seat, a flange positioning groove, a U-shaped mounting bracket, a dual-axis hydraulic cylinder, and an outer sleeve plate.

[0011] The positioning seat is fixedly installed on the top of the table, the flange positioning groove is opened at the center of the top of the positioning seat, the U-shaped mounting bracket is located on the top of the positioning seat and is fixedly connected to the positioning seat, the dual-axis hydraulic cylinder is fixedly installed inside the U-shaped mounting bracket and its two output shafts slide through the U-shaped mounting bracket, and two outer sleeves are provided. The two outer sleeves are respectively fixedly installed at the ends of the two output shafts of the dual-axis hydraulic cylinder, one outer sleeve is fixedly sleeved on the outside of the flange at the end of the measuring fluid output pipe, and the other outer sleeve is fixedly sleeved on the outside of the flange at the end of the measuring fluid input pipe.

[0012] According to at least one embodiment of the present disclosure, a calibration apparatus for a fluid metering instrument includes a placement mechanism comprising a table with a plurality of clearance holes on the top of the table for the passage of a measuring liquid inlet pipe and a measuring liquid outlet pipe.

[0013] According to at least one embodiment of the fluid metering instrument calibration device of the present disclosure, the placement mechanism further includes a base and a support leg, the support leg being fixedly disposed on the bottom of the table, and the base being fixedly disposed on the bottom end of the support leg.

[0014] According to at least one embodiment of the present disclosure, the calibration device for a fluid metering instrument includes a measuring liquid circulation mechanism comprising a measuring liquid storage tank and two sets of circulation components. The measuring liquid storage tank is fixedly disposed on the top of the base, and the two sets of circulation components are respectively disposed on both sides of the measuring liquid storage tank.

[0015] According to at least one embodiment of the calibration apparatus for fluid metering instruments of the present disclosure, any one of the circulation components includes a measuring liquid inlet pipe and a measuring liquid outlet pipe. The measuring liquid inlet pipe is fixedly disposed through the bottom end of the side of the measuring liquid storage tank, and a pump is connected to one end of the measuring liquid inlet pipe located inside the measuring liquid storage tank. The measuring liquid outlet pipe is fixedly disposed through the top end of the side of the measuring liquid storage tank. Both the measuring liquid inlet pipe and the measuring liquid outlet pipe are provided with flanges at their ends, and a sealing ring is provided inside the flanges.

[0016] The technical effects and advantages of this utility model are as follows:

[0017] This invention features a positioning and connecting mechanism that allows a standard instrument to be placed on top of the left flange positioning groove. The inner wall of the positioning groove aligns with the connecting flanges at both ends of the instrument, thus vertically positioning the standard instrument. Subsequently, a dual-axis hydraulic cylinder synchronously retracts its output shafts, causing the two outer sleeves to tightly fit the flanges at the ends of the measuring fluid inlet and outlet pipes of the standard instrument, completing the installation. The instrument to be tested is then placed on top of the right flange positioning groove, and the above operation is repeated to complete its installation and fixation. After calibration, the right dual-axis hydraulic cylinder extends its output shafts, releasing the instrument from its mounting and fixing. The instrument can then be vertically removed. Compared to existing similar equipment, this invention can vertically position the instrument, ensuring it is collinear with the flanges at the ends of the measuring fluid inlet and outlet pipes. This eliminates the need for manual positioning, saving manpower and preventing misalignment, thus guaranteeing effective calibration. Attached Figure Description

[0018] The accompanying drawings illustrate exemplary embodiments of the present disclosure and, together with the description thereof, serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0019] Figure 1 This is a schematic diagram of the overall structure of a calibration device for a fluid metering instrument according to one embodiment of the present disclosure.

[0020] Figure 2 This is a schematic diagram of the placement mechanism and measuring liquid circulation mechanism of a calibration device for a fluid metering instrument according to one embodiment of the present disclosure.

[0021] Figure 3 This is a schematic diagram of the positioning and connection mechanism of a calibration device for a fluid metering instrument according to one embodiment of the present disclosure.

[0022] The specific labels in the attached figures are as follows:

[0023] Placement mechanism; 11. Tabletop; 12. Base; 13. Support legs;

[0024] 21. Measuring fluid circulation mechanism; 22. Measuring fluid storage tank; 23. Measuring fluid inlet pipe; 24. Measuring fluid outlet pipe;

[0025] Positioning and connecting mechanism; 31. Positioning seat; 32. Flange positioning groove; 33. U-shaped mounting bracket; 34. Dual-axis hydraulic cylinder; 35. Outer plate. Detailed Implementation

[0026] For descriptive purposes, this disclosure may use spatial relative terms such as “below,” “under,” “below,” “down,” “above,” “above,” “higher,” and “side (e.g., as in a “sidewall”)” to describe the relationship between one component and another component as shown in the accompanying drawings. In addition to the orientations depicted in the drawings, the spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacture. For example, if the device in the drawings is flipped, a component described as “below” or “under” other components or features would subsequently be positioned “above” said other components or features. Thus, the exemplary term “below” can encompass both “above” and “below” orientations. Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or in other orientations), thus interpreting the spatial relative descriptive terms used herein accordingly.

[0027] Figure 1 This is a schematic diagram of the overall structure of a calibration device for a fluid metering instrument according to one embodiment of the present disclosure.

[0028] Figure 2 This is a schematic diagram of the placement mechanism 1 and the measuring liquid circulation mechanism 2 of a calibration device for a fluid metering instrument according to one embodiment of the present disclosure.

[0029] Figure 3 This is a schematic diagram of the positioning and connecting mechanism 3 of a calibration device for a fluid metering instrument according to one embodiment of the present disclosure.

[0030] like Figures 1-3 As shown, the calibration device for the fluid metering instrument disclosed herein may include components such as a placement mechanism 1, a measuring liquid circulation mechanism 2, and a positioning connection mechanism 3.

[0031] like Figure 2 As shown in this disclosure, the placement mechanism 1 includes a table 11, a base 12 and a support leg 13. The table 11 has a plurality of clearance holes on its top for the measuring liquid input pipe 22 and the measuring liquid output pipe 23 to pass through. The support leg 13 is fixedly disposed at the bottom of the table 11, and the base 12 is fixedly disposed at the bottom end of the support leg 13.

[0032] like Figure 2As shown, in a preferred embodiment, the measuring liquid circulation mechanism 2 includes a measuring liquid storage tank 21 and two sets of circulation components. The two sets of circulation components are respectively arranged on both sides of the measuring liquid storage tank 21. Each set of circulation components includes a measuring liquid input pipe 22 and a measuring liquid output pipe 23. The measuring liquid storage tank 21 is fixedly arranged on the top of the base 12. The measuring liquid input pipe 22 is fixedly arranged through the bottom side of the measuring liquid storage tank 21, and one end of the pipe inside the measuring liquid storage tank 21 is connected to a pump. The measuring liquid output pipe 23 is fixedly arranged through the top side of the measuring liquid storage tank 21. Both the measuring liquid input pipe 22 and the measuring liquid output pipe 23 are provided with flanges at their ends, and sealing rings are provided inside the flanges.

[0033] Therefore, after the connection between the standard instrument and the instrument to be calibrated is completed, the pumps at the ends of the two measuring liquid input pipes 22 draw the measuring liquid from the measuring instrument inside the measuring liquid storage tank 21, and then input it into the standard instrument and the instrument to be calibrated respectively through the two measuring liquid input pipes 22. Then, it is returned to the measuring liquid storage tank 21 through the two measuring liquid output pipes 23. During this process, the readings of the two instruments are taken and it is determined whether they are the same in order to complete the calibration.

[0034] like Figure 3 As shown in this disclosure, the two sets of positioning and connecting mechanisms 3 are respectively located on both sides of the top of the tabletop 11. The positioning and connecting mechanism 3 includes a positioning seat 31, a flange positioning groove 32, a U-shaped mounting bracket 33, a dual-axis hydraulic cylinder 34, and an outer sleeve 35. The positioning seat 31 is fixedly installed on the top of the tabletop 11. The flange positioning groove 32 is opened at the center of the top of the positioning seat 31. The U-shaped mounting bracket 33 is located on the top of the positioning seat 31 and is fixedly connected to the positioning seat 31. The dual-axis hydraulic cylinder 34 is fixedly installed inside the U-shaped mounting bracket 33, and its two output shafts slide through the U-shaped mounting bracket 33. There are two outer sleeves 35. The two outer sleeves 35 are respectively fixedly installed at the ends of the two output shafts of the dual-axis hydraulic cylinder 34. One outer sleeve 35 is fixedly sleeved on the outside of the flange at the end of the measuring fluid output pipe 23, and the other outer sleeve 35 is fixedly sleeved on the outside of the flange at the end of the measuring fluid input pipe 22.

[0035] This allows the standard instrument to be placed on top of the left flange positioning groove 32. The inner wall of the flange positioning groove 32 aligns with the connecting flanges at both ends of the instrument, thus vertically positioning the standard instrument. Subsequently, the dual-axis hydraulic cylinder 34 synchronously retracts its output shafts, causing the two outer sleeves 35 to tightly fit the flanges at the ends of the measuring fluid input pipe 22 and the measuring fluid output pipe 23, respectively, against the ends of the standard instrument, completing the installation. The instrument to be tested is then placed on top of the right flange positioning groove 32, and the above operation is repeated to complete the installation and fixation of the instrument. After calibration, the right dual-axis hydraulic cylinder 34 extends its output shafts, releasing the installation and fixation of the instrument. The instrument can then be removed vertically. Compared to existing similar equipment, this method allows for vertical positioning of the instrument, ensuring it is collinear with the flanges at the ends of the measuring fluid input pipe 22 and the measuring fluid output pipe 23. This eliminates the need for manual support, saving manpower and preventing misalignment, thus guaranteeing the actual calibration results.

[0036] It should also be noted that any content not described in detail in this specification is prior art known to those skilled in the art.

[0037] Those skilled in the art should understand that the above embodiments are merely for illustrating the present disclosure and are not intended to limit the scope of the disclosure. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present disclosure.

Claims

1. A prover for a fluid meter, comprising: The utility model relates to a kind of standard instrument calibrating device, including: placement mechanism, the placement mechanism is installed to the measuring liquid circulation mechanism and positioning connecting mechanism; Measuring liquid circulation mechanism, the measuring liquid circulation mechanism is used to deliver measuring liquid to the instrument to be tested and standard instrument;And Two sets of positioning connecting mechanism, two sets The positioning connecting mechanism is located on the top of the table board two sides respectively, and the positioning connecting mechanism includes positioning seat, flange positioning slot, U-shaped mounting bracket, double-shaft hydraulic cylinder and outer sleeve plate. The positioning seat is fixedly arranged on the top of the table board, the flange positioning slot is opened in the center of the top of the positioning seat, the U-shaped mounting bracket is located on the top of the positioning seat and is fixedly connected with the positioning seat, the double-shaft hydraulic cylinder is fixedly arranged in the inner side of the U-shaped mounting bracket, and the output shafts on both sides thereof are slidably penetrated through the U-shaped mounting bracket, and the outer sleeve plate is provided with two, and the two outer sleeve plates are fixedly arranged on the two output shaft ends of the double-shaft hydraulic cylinder, one outer sleeve plate is fixedly sleeved on the outer side of the flange end of the measuring liquid output pipe, and the other outer sleeve plate is fixedly sleeved on the outer side of the flange end of the measuring liquid input pipe.

2. A fluid meter prover as set forth in claim 1, characterized in that: The placement mechanism includes a table board, and a plurality of avoidance holes are formed in the top of the table board for the measuring liquid input pipe and the measuring liquid output pipe to pass through.

3. A fluid meter prover as set forth in claim 2 wherein: The placement mechanism further includes a base and a supporting leg, the supporting leg is fixedly arranged on the bottom of the table board, and the base is fixedly arranged on the bottom end of the supporting leg.

4. A fluid meter prover as set forth in claim 3 wherein: The measuring liquid circulation mechanism includes a measuring liquid storage tank and two sets of circulation assemblies, the measuring liquid storage tank is fixedly arranged on the top of the base, and the two sets of circulation assemblies are arranged on the two sides of the measuring liquid storage tank.

5. A fluid meter prover as set forth in claim 4 wherein: Any one set of the circulation assembly includes a measuring liquid input pipe and a measuring liquid output pipe, the measuring liquid input pipe is fixedly penetrated and arranged on the bottom end of the side of the measuring liquid storage tank, and the end thereof located in the interior of the measuring liquid storage tank is connected with a pump, the measuring liquid output pipe is fixedly penetrated and arranged on the top of the side of the measuring liquid storage tank, and the flanges are arranged on the end portions of the measuring liquid input pipe and the measuring liquid output pipe, and the sealing rings are arranged in the inner sides of the flanges.

Images