CN217384413U

CN217384413U - Online calibration device of petrochemical product flowmeter based on series comparison method

Info

Publication number: CN217384413U
Application number: CN202221335492.6U
Authority: CN
Inventors: 刘洋; 孟洋; 陆科
Original assignee: Liaoning Institute of Metrology
Current assignee: Liaoning Institute of Metrology
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2022-09-06
Anticipated expiration: 2032-05-31

Abstract

The utility model belongs to the technical field of measurement, in particular to an on-line calibration device for a series comparison method petrochemical flowmeter; in particular, it relates to the on-line calibration of a petrochemical flowmeter with a measurement accuracy lower than 1.5. The detection method adopts on-site online series detection, and the user does not need to disassemble the oil flowmeter for inspection; the detection medium adopts the actual medium used by the customer to solve the measurement deviation caused by different media. It includes a standard meter arranged in the chassis, and is characterized in that there are two standard turbine flowmeters, and the two standard turbine flowmeters are connected in parallel up and down through pipelines, and the two ends of the latter parallel pipelines are extended to the other through series pipelines. and a mechanical pump is arranged on the series pipeline; the two ends of the series pipeline extending out of the chassis are respectively connected with the pipeline of the petrochemical flowmeter to be measured through their respective flow butt hoses.

Description

Online calibration device of petrochemical product flowmeter based on series comparison method

Technical Field

The utility model belongs to the technical field of metering, in particular to an online calibration device of a petrochemical product flowmeter by a series comparison method; in particular, to the on-line calibration of petrochemical flowmeters with metering accuracy below grade 1.5.

Background

Petrochemical flowmeters are meters used to measure volumetric or mass flow values in a media delivery line. The method is widely applied to the fields of petrochemical industry, power industry, transportation industry and the like. The measurement problem of petrochemical industry flowmeter involves safety protection, environmental monitoring, trade settlement etc. and so on the livelihood aspect, consequently needs to carry out the quantity value to the measurement degree of accuracy of petrochemical industry flowmeter and trace to the source.

The widely used tracing mode at present is to detach the oil flowmeter from the pipeline and send the oil flowmeter to a qualified metrological verification mechanism for magnitude tracing detection. However, due to the disassembly of the petrochemical flowmeter, firstly, the pipeline is interrupted, and cannot be used temporarily, secondly, water is generally adopted as a medium during tracing detection (deviation of a calibration result can be caused), and thirdly, pipeline interfaces adopted by part of oil flowmeters are special, and the like, and the problems that some use departments have difficulty in tracing the quantity value of the petrochemical flowmeter are caused.

Disclosure of Invention

The utility model discloses be exactly to the defect that prior art exists, provide a online calibrating device of relatively method petrochemical industry flowmeter of establishing ties. The device is a mobile online calibration device for petrochemical product flow by a standard turbine flow meter method, the detection mode adopts on-site online serial detection, and a user does not need to disassemble an oil flow meter for inspection; the detection medium adopts an actual medium used by a client, and metering deviation caused by different media is solved.

In order to achieve the purpose, the utility model adopts the following technical scheme that the device comprises a standard turbine flowmeter arranged in a case, and is characterized in that the standard turbine flowmeter comprises two standard turbine flowmeters, the two standard turbine flowmeters are connected in parallel up and down through a pipeline, and two ends of a back parallel pipeline extend out of the case through a series pipeline; and a mechanical pump is arranged on the serial pipeline; and two ends of the serial pipeline extending out of the case are respectively connected with the pipeline of the petrochemical product flowmeter to be detected through respective flow butt joint hoses.

Furthermore, a regulating valve is arranged on the parallel pipeline; and a pressure stabilizing tank, a switch valve, a temperature transmitter and a pressure transmitter are arranged on the serial pipeline.

Further, the flow butt joint hose is connected with a petrochemical product pipeline corresponding to the petrochemical product flowmeter through a quick clamping joint.

Furthermore, the quick clamping joint comprises a main sleeve and a clamping sleeve ring; the first end of the main sleeve is communicated with the flow butt joint hose, the second end of the main sleeve is provided with a groove, and the clamping ring is embedded into the groove; a pressing sleeve is sleeved outside the second end of the main sleeve and presses the clamping sleeve ring in the groove; the compression sleeve is in threaded connection with the main sleeve; when in use, the free end of the petrochemical pipeline passes through the clamping sleeve ring and extends into the inner cavity of the main sleeve.

Furthermore, the inner wall of the clamping ring is provided with a rubber ring, and when the petrochemical product pipeline clamping device is used, the free end of the petrochemical product pipeline penetrates through the rubber ring.

Furthermore, an O-shaped sealing ring is arranged between the clamping ring and the groove.

Furthermore, the clamping ring comprises an upper clamping ring half ring and a lower clamping ring half ring which are arranged oppositely to form an annular structure, and the upper and lower clamping ring halves are connected into a whole through a locking screw.

Furthermore, the clamping ring is provided with a plurality of clamping rings, the outer diameters of the clamping rings are the same, and the inner diameters of the clamping rings are different.

Further, the chassis adopts a frame structure.

Further, the standard meter employs a turbine flow meter.

Compared with the prior art the utility model discloses beneficial effect.

Compared with a flow standard device used in a laboratory, the utility model simplifies unnecessary components and makes full use of field conditions for replacement; the utility model discloses convenient transportation shifts, compact, and the flow butt joint hose adopts the soft formula to connect, is fit for the narrow and small site conditions in space, and is little to customer on-the-spot detection space requirement.

Drawings

The present invention will be further described with reference to the accompanying drawings and the following detailed description. The scope of protection of the present invention is not limited to the following description.

FIG. 1 is a schematic view of the overall structure of an on-line calibration device for a micro-caliber petrochemical flowmeter.

Fig. 2 is a schematic view of the overall structure of the quick card connector.

Fig. 3 is a schematic view of a partial cross-sectional structure of the quick-release coupling.

Fig. 4 is a right side view of fig. 3.

In the figure, 1 is a case, 2 is a parallel pipeline, 3 is a mechanical pump, 4 is a pressure stabilizing tank, 5 is a switch valve, 6 is a temperature transmitter, 7 is a pressure transmitter, 8 is a turbine flowmeter I, 9 is a turbine flowmeter II, 10 is a regulating valve I, 11 is a regulating valve II, 12 is a control and power supply assembly, 13 is an inlet, 14 is an outlet pipeline, 15 is a petrochemical product flowmeter to be detected, 16 is a hose, 17 is a quick clamp connector, 18 is a petrochemical product pipeline, 19 is a main sleeve, 20 is a pressing sleeve, 21 is a pressing part, 22 is a clamping sleeve ring, 23 is an O-shaped sealing ring, 24 is a rubber ring, 25 is an external thread, 26 is an installation hole, 27 is an upper clamping sleeve semi-ring, 28 is a lower clamping sleeve semi-ring, and 29 is a locking screw.

Detailed Description

As shown in fig. 1-4, the specific embodiment: the device comprises two standard meters (namely standard turbine flowmeters) arranged in a case 1, wherein the two standard meters are connected in parallel up and down through a pipeline, and two ends of a back parallel pipeline 2 extend out of the case through a serial pipeline; and a mechanical pump 3 is arranged on the serial pipeline; and two ends of the serial pipeline extending out of the case are respectively connected with the pipeline of the petrochemical product flowmeter 15 to be detected through respective flow butt joint hoses 16.

Preferably, the parallel pipeline 2 is provided with a regulating valve (a first regulating valve 10 and a second regulating valve 11); and a pressure stabilizing tank 4, a switching valve 5, a temperature transmitter 6 and a pressure transmitter 7 are arranged on the serial pipeline.

Preferably, the flow docking hose 16 is connected to a petrochemical pipeline corresponding to the petrochemical flowmeter 15 to be measured through a quick clamping joint 17. The quick clamping connector 17 comprises a main sleeve 19 and a clamping sleeve ring 22; the first end of the main sleeve 19 is communicated with the flow butt joint hose, the second end of the main sleeve 19 is provided with a groove, and the clamping sleeve ring 22 is embedded into the groove; a pressing sleeve 20 is sleeved outside the second end of the main sleeve 19 and presses the clamping sleeve ring 22 in the groove; the pressing sleeve 20 is in threaded connection with the main sleeve 19; when in use, the free end of the petrochemical pipeline passes through the clamping sleeve ring 22 and extends into the inner cavity of the main sleeve 19. The inner wall of the clamping ring 22 is provided with a rubber ring 24, and when the petrochemical pipeline clamping device is used, the free end of the petrochemical pipeline penetrates through the rubber ring 24. An O-shaped sealing ring is arranged between the clamping ring 22 and the groove. The clamping ring 22 comprises an upper clamping ring half ring 27 and a lower clamping ring half ring 28 which are arranged oppositely to form an annular structure, and the upper and lower clamping ring halves are connected into a whole through a locking screw 29. The collar 22 has a plurality of collars 22, and the outer diameters of the collars 22 are the same and the inner diameters thereof are different. The petrochemical pipelines with different sizes can be conveniently butted.

The utility model can realize quick disassembly and is convenient for pipe butt joint by the arrangement of the quick clamping joint; and the connection is firm. In addition, different clamping ring rings 22 can be replaced for oil pipelines with different pipe diameters to be connected; the cutting ferrule rings 22 with different specifications have the same outer diameter and different inner diameters, wherein the inner diameters are suitable for the pipe diameters of oil pipelines to be butted, and the two cutting ferrule rings are tightly plugged by a rubber ring 24; therefore, the quick clamping joint is suitable for the butt joint of different petrochemical product pipelines.

When in use, the pressing sleeve 20 is sleeved into the free end of the petrochemical pipeline and reserved for standby; the petrochemical pipeline is firstly butted and tightly matched with the clamping ring 22; then the cutting ferrule 22 is arranged in the groove of the main sleeve 19, and the cutting ferrule and the main sleeve are sealed by an O-shaped sealing ring 23; and then the pressing sleeve 20 is locked on the main sleeve 19 through threads, so that the main sleeve 19 and the ferrule 22 are fastened into a whole.

Preferably, the chassis is of a frame-type construction.

Preferably, the standard meter employs a turbine flow meter.

Specific example 1: the outlet pipe way that will be surveyed petrochemical industry flowmeter place pipeline is opened, utilizes quick joint will be surveyed the outlet pipe way connection of petrochemical industry flowmeter (the petrochemical industry flowmeter 15 that awaits measuring) to the 13 hoses of entry, and this device outlet pipe way 14 gets back to the oil return pipeline that is surveyed the oil flowmeter through hose connection and quick joint, realizes will the utility model discloses the device concatenates into in being surveyed the working line of oil flowmeter.

Open oil pump 3, switch valve 5, regulating valve 10 and two 11 of regulating valve through control and electrical power generating system 12 to start main standard ware turbine flowmeter 8 and turbine flowmeter two 9, confirm the normal back of pipeline seal condition, start the working instrument of installing by survey petrochemical industry flowmeter, make working medium pass through by survey petrochemical industry flowmeter and this device entry 13 after, follow the utility model discloses device outlet pipeline 14 flows back to by survey petrochemical industry flowmeter place pipeline.

Specific example 2: the flow value is adjusted to a proper detection flow point through the flow adjusting valve 10 or 11, the metering detection work is started after the temperature, the pressure and the flow value of the medium in the whole pipeline are stable by monitoring the flow values of the temperature transmitter 6, the pressure transmitter 7 and the main standard devices 8 and 9, and the pressure stabilizing tank 4 plays a role in buffering the pressure fluctuation at the outlet of the oil pump. Utilize control system 12 simultaneous record by survey oil flowmeter's flow value with the utility model discloses the flow value that the main standard ware (turbine flowmeter 8 and 9) of device show carries out a lot of through adjusting flow valve 10 and 11 adjustment operating flow point and measures the back, closes the working instrument by survey oil flowmeter, recovers the pipeline, accomplishes the work of magnitude traceability.

Specific example 3: the branch pipelines where the turbine flowmeter 8 and the turbine flowmeter 9 are located can simultaneously carry out detection work, can also independently work according to a detected flow point, and can realize the circulation and the closing of the pipelines only by closing the regulating valve 10 or 11.

Specific example 4: the mechanical pump can also realize the circulation of the whole pipeline through an oil tank, so that the medium of the measured petrochemical pipeline is used as an intermediary box body through the oil tank, and the circulation of the medium is realized by utilizing the mechanical pump. Or as a supply of liquid; the circulation is smoother.

The utility model discloses device test mode adopts the comparison method of establishing ties, and the measuring accuracy degree to customer's requirement is less than 1.5 level oil flowmeter, needn't adopt the higher, the lower static quality method of detection efficiency of the degree of accuracy, can adopt the utility model discloses the standard turbine flowmeter series connection comparison method of device carries out the quantity value and traces to the source, and the comparison method of establishing ties detects fastly, and the security is high, is fit for being used for on-the-spot on-line measuring, full play the utility model discloses the measurement technical ability of device.

It should be understood that the above detailed description of the present invention is only used for illustrating the present invention and not limited to the technical solutions described in the embodiments of the present invention, and it should be understood by those skilled in the art that the present invention can be modified or replaced with equivalent ones to achieve the same technical effects; as long as the use requirement is satisfied, the utility model is within the protection scope.

Claims

1. a series comparison method petrochemical flowmeter on-line calibration device, comprises the standard turbine flowmeter that is arranged in the cabinet, it is characterized in that: described standard turbine flowmeter has two, and two standard turbine flowmeters pass up and down the pipeline connected in parallel, and both ends of the parallel pipeline are extended to the outside of the chassis through the series pipeline; and a mechanical pump is arranged on the series pipeline;

The two ends of the series pipeline extending out of the chassis are respectively connected with the pipeline of the petrochemical flowmeter to be measured through respective flow butt hoses.

2. A kind of serial comparison method petrochemical flowmeter online calibration device according to claim 1, is characterized in that: described parallel pipeline is provided with regulating valve; Temperature transmitter, pressure transmitter.

3 . The on-line calibration device for a petrochemical flowmeter using a series comparison method according to claim 1 , wherein the flow butt hose is connected to the petrochemical pipeline corresponding to the petrochemical flowmeter through a quick snap joint. 4 .

4 . The on-line calibration device for a petrochemical flowmeter with a series comparison method according to claim 3 , wherein the quick snap joint comprises a main sleeve and a clip ring; the first end of the main sleeve is butted with the flow rate. 5 . The hoses are connected, the second end of the main sleeve is provided with a setting groove, and the ferrule ring is embedded in the groove; a pressing sleeve is sleeved outside the second end of the main sleeve, and the ferrule ring is pressed into the groove the pressing sleeve is threadedly connected with the main sleeve; when in use, the free end of the petrochemical pipeline is passed through the ferrule ring and protrudes into the inner cavity of the main sleeve.

5. An on-line calibration device for a petrochemical flowmeter using a series comparison method according to claim 4, wherein a rubber ring is provided on the inner wall of the ferrule, and the free end of the petrochemical pipeline passes through the rubber when in use. ring.

6 . The on-line calibration device for a petrochemical flowmeter with a series comparison method according to claim 4 , wherein an O-ring is arranged between the ferrule ring and the groove. 7 .

7 . The on-line calibration device for a petrochemical flowmeter with a serial comparison method according to claim 4 , wherein the ferrule ring comprises an upper ferrule half-ring and a lower ferrule half-ring, which are arranged opposite to each other, 8 . An annular structure is formed, and the upper and lower half-ring clamping sleeves are connected together by locking screws.

8 . The on-line calibration device for a petrochemical flowmeter with a serial comparison method according to claim 7 , wherein there are multiple ferrule rings, and the multiple ferrule rings have the same outer diameter and different inner diameters. 9 .

9 . The on-line calibration device for a series comparison method petrochemical flowmeter according to claim 1 , wherein the chassis adopts a frame structure. 10 .