CN218121103U

CN218121103U - Calibration device for flow testing tool of electromagnetic flowmeter

Info

Publication number: CN218121103U
Application number: CN202222543067.2U
Authority: CN
Inventors: 张慧鹏; 李堂忠; 何彦祥; 王晓青
Original assignee: Hangzhou Saiya Energy Technology Co ltd
Current assignee: Hangzhou Saiya Energy Technology Co ltd
Priority date: 2022-09-26
Filing date: 2022-09-26
Publication date: 2022-12-23
Anticipated expiration: 2032-09-26

Abstract

The utility model belongs to the technical field of the test is markd, a electromagnetic flowmeter flow test frock calibration device is provided, measure the both sides of pipe and install the flange, just the isolator sets up the center department at measurement pipe and flange, flange bottom location is fixed on the electromagnetic flowmeter positioning seat, the portable location clamp ring that is provided with two sets of symmetries in circumference lateral wall middle part both sides of measuring the pipe, set up the flange constant head tank on the electromagnetic flowmeter positioning seat that the flange bottom corresponds, flange constant head tank inside is provided with along measuring pipe axial displacement's flange locating plate, the location clamp ring is provided with drive mechanism with the electromagnetic flowmeter positioning seat inboard of flange locating plate bottom. The device is simple to position and operate, rapid and high in stability.

Description

Calibration device for flow testing tool of electromagnetic flowmeter

Technical Field

The utility model belongs to the technical field of the test is markd, especially, relate to an electromagnetic flowmeter flow test frock calibration device.

Background

The calibration of the electromagnetic flowmeter usually adopts a real-current calibration method, namely, the actual flowing measuring medium flows through the electromagnetic flowmeter to realize calibration, the electromagnetic flowmeter circuit board is fixed on a mould to adapt to different electromagnetic flowmeter circuit boards, and a detection calibration device for different electromagnetic flowmeters consists of a high-power pump station, a pipeline, a large-size liquid storage tank and the like.

The Chinese patent application numbers are: 2021103304827 discloses an electromagnetic flowmeter flow test fixture calibration device, which is calibrated by the extrusion pushing of flow pressure when in use, saving manpower and material resources, when the airtight rotary valve device calibrates the electromagnetic flowmeter flow, then when passing through gas, the inner system can be effectively closed, preventing the gas from overflowing, and keeping the tightness of detection, but after the device is analyzed, it is found that, because the structure of the electromagnetic flowmeter includes some parts with higher precision such as magnetic circuit system, measuring conduit, electrode, etc., when calibrating and testing the electromagnetic flowmeter, it is generally required to keep fixed, then corresponding flow is introduced to carry out medium flow measurement, and the angle of the electromagnetic flowmeter is that the measuring conduit at the bottom is placed on the measuring platform or other planes, and then the measuring conduit is fixed, but because the measuring conduit is a column, positioning the measuring conduit has certain difficulty, the problem of conduit rotation or transverse movement is easy to occur, the stability of the whole electromagnetic flowmeter at the measuring calibration is affected, and because the diameters and lengths of the measuring conduits corresponding to different from each other are different, the problem of being difficult to be applied to accurate and the technical scheme is needed.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide an electromagnetic flow meter flow test frock calibration device aims at solving above-mentioned problem.

The utility model relates to a realize like this, an electromagnetic flowmeter flow test frock calibration device's structure chart, include: the device comprises an electromagnetic flowmeter positioning seat, a differential pressure transmitter, an airflow reflux device, a flowmeter measuring device and a measuring conduit; the detection process belongs to the prior art, and therefore, the detection process is not described in detail, and simultaneously flanges are installed on two sides of the measuring conduit, the isolator is arranged at the center of the measuring conduit and the flange, the bottom of the flange is positioned and fixed on an electromagnetic flow positioning seat, two sets of symmetrical positioning clamp rings are arranged on two sides of the middle of the circumferential side wall of the measuring conduit, two sets of positioning clamp rings are clamped on the outer side of the measuring conduit to be aligned and fixed, the bottom of the flange is correspondingly arranged at the center of the measuring conduit and the flange, a positioning mechanism for controlling the axial movement of the flange and the positioning ring of the positioning clamp ring is arranged on the inner side of the flange, and the positioning mechanism for controlling the axial movement of the flange along the positioning groove of the flange is arranged on the inner side of the positioning seat, and the positioning mechanism for controlling the axial movement of the flange and the positioning clamp ring is arranged on the positioning plate of the positioning mechanism for moving the positioning flange along the positioning groove of the positioning flange, and then the measuring pipe is tightly fixed and positioned, and the measuring pipe arranged on the positioning seat of the electromagnetic flowmeter is kept in a stable state to carry out flow test calibration operation.

The utility model provides a pair of electromagnetic flowmeter flow test frock calibration device, it is rotatory through the turning handle drive, the rotation of utilization, under the meshing of skewed tooth one and skewed tooth two, drive nut two in step and remove along lead screw two, then two sets of location clamp rings at two tops of control nut carry out the centre gripping towards the outside removal of measuring pipe, while rotatory simultaneously, utilize the meshing of initiative straight-teeth gear and driven straight-teeth gear to drive the connecting rod and rotate, then drive two sets of nut one and go up horizontal relative movement on lead screw one, and then it carries out the centre gripping to the flange at location clamp ring both ends to drive two sets of flange locating plates and fix, utilize the location clamp ring, the flange locating plate can keep measuring pipe fully stable when carrying out flow test to the location of measuring pipe, prevent when the influence test because of shake vibration scheduling problem, inside gas flows, the instrument is observed and is examined the deviation of time measuring.

Drawings

Fig. 1 is a schematic three-dimensional structure diagram of a calibration device for a flow testing tool of an electromagnetic flowmeter.

Fig. 2 is a schematic view of a top view structure of a calibration device of a flow testing tool of an electromagnetic flowmeter.

Fig. 3 is a schematic structural view of a calibration device of an electromagnetic flowmeter flow test tool.

FIG. 4 is a schematic side view of a calibration device of an electromagnetic flowmeter flow test fixture;

FIG. 5 is a schematic diagram of a front view of a transmission mechanism in a calibration device of a flow measuring device of an electromagnetic flowmeter;

FIG. 6 is a schematic top view of a drive mechanism of a calibration device for a flow measurement device of an electromagnetic flowmeter;

in the drawings: the device comprises an electromagnetic flow meter positioning seat 10, a differential pressure transmitter 11, an airflow reflux device 12, a flow meter measuring device 13, a measuring guide pipe 14, a flange 15, a positioning clamp ring 16, a flange positioning groove 17, a flange positioning plate 18, a rotating handle 19, a rotating shaft 20, a positioning clamp ring moving sliding opening 21, a driving straight gear 22, a driven straight gear 23, a connecting rod 24, a first lead screw 25, a first nut 26, a transmission mechanism 28, a first helical tooth 29, a second helical tooth 30, a second lead screw 31, a second nut 32, a sliding rod 34 and a sliding sleeve 35.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The following detailed description is provided for the specific embodiments of the present invention.

As shown in fig. 1-4, for the embodiment of the present invention provides a structure diagram of a calibration device for a flow measurement tool of an electromagnetic flowmeter, including: the device comprises an electromagnetic flowmeter positioning seat 10, a differential pressure transmitter 11, an airflow reflux device 12, a flowmeter measuring device 13 and a measuring conduit 14; an isolator is arranged at one end of a measuring conduit 14, a terminal electromagnetic flow is communicated with the end of the isolator, an input electromagnetic flow is arranged in the measuring conduit 14 to flow, the top of the measuring conduit 14 is communicated with an airflow reflux device 12 through two groups of pressure conducting pipes, one side of the top of the airflow reflux device 12 is communicated with a differential pressure transmitter 11, the top end of the differential pressure transmitter 11 is provided with an air compressor device (not shown in the figure), a hydraulic cylinder is arranged at one side of the differential pressure transmitter 11, one end of a hydraulic rod is connected with a flowmeter measuring device 13, even if the electromagnetic flow entering the measuring conduit 14 during use transmits gas through the flowmeter measuring device 13, the gas is prevented from flowing back through the airflow reflux device 12, then the input pressure value is detected through the air compressor device, and then the flow counting value calibration detection is carried out through the flowmeter measuring device 13, the detection process belongs to the prior art, therefore, the detailed description is not given, meanwhile, flanges 15 are installed on two sides of the measuring conduit 14, the isolator is arranged at the center of the measuring conduit 14 and the flange 15, the bottom of the flange 15 is fixedly positioned on the electromagnetic flowmeter locator base 10, two sets of symmetrical locating clamp rings 16 are movably arranged on two sides of the middle of the circumferential side wall of the measuring conduit 14, the locating clamp rings 16 are clamped on the outer side of the measuring conduit 14 to be aligned and fixed, a flange locator slot 17 is arranged on the electromagnetic flowmeter locator base 10 corresponding to the bottom end of the flange 15, a flange locating plate 18 moving along the axial direction of the measuring conduit 14 is arranged inside the flange locator slot 17, a transmission mechanism 28 is arranged on the inner sides of the electromagnetic flowmeter locator base 10 at the bottoms of the locating clamp rings 16 and the flange locating plate 18, the transmission mechanism 28 operates to synchronously control the locating clamp rings 16 and the flange locating plate 18 to move towards the measuring conduit 14, namely, the flange positioning plates 18 and the positioning clamping rings 16 on the two sides are driven to move towards the center of the measuring guide pipe 14 at the same time, and then the measuring guide pipe 14 on the electromagnetic flow meter positioning seat 10 is tightly fixed and kept in a stable state for flow test calibration operation.

In the embodiment of the present invention, the inside of the electromagnetic flowmeter locator base 10 is configured as a hollow structure, and the surface of the locating clip 16 contacting with the measuring pipe 14 is provided with equally spaced strip-shaped structures for increasing the friction force contacting with the measuring pipe 14, thereby improving the clamping stability;

the bottom of the positioning clamp ring 16 is provided with a connecting rod, the bottom end of the connecting rod penetrates through a positioning clamp ring moving sliding opening 21 arranged on the electromagnetic flow meter positioning seat 10 and is connected to the transmission mechanism 28 downwards, the two sides of the bottom end of the flange positioning plate 18 are provided with connecting rods, the bottom end of one side of the connecting rod is connected with a sliding sleeve 35, and the bottom end of the other side of the connecting rod is connected to the transmission mechanism 28.

As shown in fig. 5-6, in an embodiment of the present invention, the transmission mechanism 28 includes a second nut 32 located at the bottom of the connecting rod at the bottom of the positioning clamp ring 16, a second screw 31 is screwed in the middle of the second nut 32 along a direction perpendicular to the axis of the measuring catheter 14, two opposite ends of the second screw 31 at two sides are connected with a second helical gear 30, the other end is rotatably connected in the electromagnetic flowmeter positioning seat 10 through a bearing, one side of the two second helical gears 30 is vertically engaged with a first helical gear 29, one side of the first helical gear 29 away from the second helical gear 30 is provided with a second helical gear 20, the end of the second helical gear 20 movably penetrates to the outside of the electromagnetic flowmeter positioning seat 10 and is provided with a rotating handle 19, that is, the rotating handle 19 drives the rotating handle 20 to rotate, then the first helical gear 29 is synchronously controlled to drive the second helical gear 30 to rotate, and further drive the second nut 32 to move on the second screw 31, the second nut 32 is provided with a phase guide device for limiting its rotation, then the movement of the second nut 32 is connected to drive the connecting rod to relatively move the positioning clamp ring 16 at the top, and clamp ring is clamped and fixed to the measuring catheter 14;

a driving straight gear 22 is fixedly installed in the electromagnetic flowmeter positioning seat 10 on one side of the rotating handle 19, which is close to the electromagnetic flowmeter positioning seat 10, a driven straight gear 23 is engaged with one obliquely downward side of the driving straight gear 22, one end of the driven straight gear 23 is rotatably connected to the inner wall of the electromagnetic flowmeter positioning seat 10 through a bearing, a connecting rod 24 is connected to the other side of the electromagnetic flowmeter positioning seat, two sections of first lead screws 25 which are the same as the flange positioning plate 18 in width are arranged on the connecting rod 24 corresponding to the flange positioning plate 18, the tooth spaces of the two sections of first lead screws 25 are opposite in direction, and are respectively in threaded connection with first nuts 26, the first nuts 26 are provided with a phase guide device for limiting the rotation of the first lead screws, the two sections of first lead screws 25 are driven to rotate when the driving straight gear 22 rotates to drive the driven straight gear 23, and the first nuts 26 which are in opposite in tooth space direction when the first nuts 26 which are in threaded connection are in operation, the two groups of first nuts 26 are in a relative movement state, namely, move towards the center of the measuring conduit 14 or are away from the center of the measuring conduit at the same time, and are fixed to the connecting rod at the top of the connecting rod 26 at the bottom of the flange positioning plate 18, namely, the driving flange 18 to move synchronously, and the positioning plate, and one end of the connecting rod 24 which is far away from the driven straight gear 23, is connected to the inner wall of the electromagnetic flowmeter positioning seat 10 through the electromagnetic flowmeter positioning seat.

As a preferred embodiment of the utility model, in order to keep the stability of nut 26 when the flange locating plate 18 at mobility control top removes, be connected with sliding sleeve 35 through the connecting rod bottom at flange locating plate 18 bottom opposite side, sliding sleeve is equipped with slide bar 34 on sliding sleeve 35, and the both ends of slide bar 34 are passed through the bearing and are connected inside electromagnetic flow meter locating seat 10, and sliding sleeve 35 follows flange locating plate 18 and removes promptly, can keep flange locating plate 18 when removing, the equilibrium of bottom both sides.

The utility model provides an in the above-mentioned embodiment provide an electromagnetic flowmeter flow test frock calibration device, during the use, it puts electromagnetic flowmeter locator seat 10 top upside according to measuring conduit 14's length and diameter in advance, then place the flange 15 of both sides in flange locator seat 17, simultaneously with measuring conduit 14 middle part correspondence directly over locating clip removes sliding opening 21, then manual turning handle 19 drive 20 is rotatory, then it is rotatory to drive two 29 drive skewed tooth 30, and then two 32 of nut of control both sides move on lead screw two 31, the location clamp 16 that drives both sides through the connection of link will measure conduit 14 outside and carry out the centre gripping parcel, when 20 rotates simultaneously, meshing drive connecting rod 24 through initiative spur gear 22 and driven spur gear 23 rotates, then it drives the flange locating plate 18 at top to arrange flange 15 in flange locator seat 17 in the both ends of measuring conduit 14 in and fasten the centre gripping, keep measuring conduit 14's abundant stability, then during the test, it passes through measuring device 13 transmission gas flowmeter to get into the inside electromagnetic flow of measuring conduit 14, then through airflow reflux detection device 12, the backflow detection device goes on the pressure value of backflow detection device and measures the flow meter.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

1. The utility model provides an electromagnetic flowmeter flow test frock calibration device which characterized in that, an electromagnetic flowmeter flow test frock calibration device includes: the device comprises an electromagnetic flowmeter positioning seat, a differential pressure transmitter, an airflow reflux device, a flowmeter measuring device and a measuring conduit; the one end of measuring pipe is provided with the isolator, and the tip intercommunication of isolator has terminal electromagnetic current, and the electromagnetic current of input arranges the inside flow of measuring pipe in, it has airflow reflux device to measure the pipe top through two sets of connecting pipe intercommunications, and airflow reflux device top one side intercommunication has differential pressure transmitter, and differential pressure transmitter's top is provided with the pneumatic press device, one side of differential pressure transmitter is provided with the pneumatic cylinder, and the one end of hydraulic stem is connected with flowmeter measuring device, measure the flange is installed to the both sides of pipe, just the isolator sets up the center department at measuring pipe and flange, flange bottom location is fixed on the electromagnetic flowmeter locating seat, the portable location clamp ring that is provided with two sets of symmetries in circumference lateral wall middle part both sides of measuring pipe, the flange constant head tank has been seted up on the electromagnetic flowmeter constant head tank that the flange constant head tank corresponds, and the inside flange locating plate along measuring pipe axial displacement that is provided with of flange constant head tank, the electromagnetic flowmeter constant head tank inboard of location clamp ring bottom flange constant head tank is provided with drive mechanism.

2. The calibration device for the electromagnetic flowmeter flow test tool according to claim 1, wherein the electromagnetic flowmeter positioning seat is internally provided with a hollow structure, and one surface of the positioning clamping ring, which is in contact with the measuring conduit, is provided with equally spaced strip-shaped structures.

3. The calibration device for the electromagnetic flowmeter flow testing tool according to claim 2, wherein a connecting rod is mounted at the bottom of the positioning clamp ring, the bottom end of the connecting rod penetrates through a positioning clamp ring moving sliding opening formed in the electromagnetic flowmeter positioning seat and is connected to the transmission mechanism downwards, connecting rods are mounted on two sides of the bottom end of the flange positioning plate, a sliding sleeve is connected to the bottom end of the connecting rod on one side, and the bottom end of the connecting rod on the other side is connected to the transmission mechanism.

4. The calibration device for the flow testing tool of the electromagnetic flowmeter as claimed in claim 3, wherein the transmission mechanism comprises a second nut located at the bottom of the connecting rod at the bottom end of the positioning clamp ring, a second lead screw is connected to the middle of the second nut in a threaded manner along a direction perpendicular to the axis of the measuring pipe, two opposite ends of the second lead screws on two sides are connected with second inclined teeth, the other ends of the second lead screws are rotatably connected into the positioning seat of the electromagnetic flowmeter through bearings, a first inclined tooth is vertically meshed with one side of each of the two second inclined teeth, one side of each inclined tooth, which is far away from the second inclined tooth, is mounted, and the end of each inclined tooth movably penetrates through the outer portion of the positioning seat of the electromagnetic flowmeter and is provided with a rotating handle.

5. The calibrating device for the electromagnetic flowmeter flow testing tool according to claim 4, wherein a driving spur gear is fixedly installed in the electromagnetic flowmeter positioning seat close to one side of the rotating handle, a driven spur gear is meshed with one obliquely lower side of the driving spur gear, one end of the driven spur gear is rotatably connected into the inner wall of the electromagnetic flowmeter positioning seat through a bearing, a connecting rod is connected to the other side of the electromagnetic flowmeter positioning seat, two first lead screws with the same width as the flange positioning plate are arranged on the connecting rod at positions corresponding to the flange positioning plate at the top, tooth grooves of the first lead screws are opposite in direction, nuts are in threaded connection with the first lead screws, and a phase guide device for limiting the rotation of the first lead screws is arranged on the first nut.

6. The calibration device for the electromagnetic flowmeter flow testing tool according to claim 5, wherein a sliding sleeve is connected to the bottom end of the connecting rod on the other side of the bottom of the flange positioning plate, a sliding rod is sleeved on the sliding sleeve in a sliding manner, and two ends of the sliding rod are connected to the inside of the electromagnetic flowmeter positioning seat through bearings.