CN214471198U - Fluid quantitative metering device - Google Patents
Fluid quantitative metering device Download PDFInfo
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- CN214471198U CN214471198U CN202120291510.4U CN202120291510U CN214471198U CN 214471198 U CN214471198 U CN 214471198U CN 202120291510 U CN202120291510 U CN 202120291510U CN 214471198 U CN214471198 U CN 214471198U
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Abstract
The utility model provides a fluid quantitative metering device, it includes structure frame, electron weighing instrument, fluid collection device, weight stores pylon and weight, the precision value of weight is known value. When the electronic weighing instrument is used, the theoretical flow is determined and the corresponding mass value M is calculated, then weights with the mass value M are loaded on the weight hanging frame, the indicating value K of the electronic weighing instrument is recorded, after the weights are unloaded, fluid flowing out of the flowmeter is placed into the fluid collecting device, when the indicating value of the electronic weighing instrument is changed into K, the actual flow flowing out of the flowmeter is equivalent to the theoretical flow, the theoretical flow is compared with the indicating value of the flowmeter to be calibrated, and whether the accuracy of the flowmeter reaches the standard is judged. The utility model discloses utilize the high, the good characteristics of long-term stability of precision of weight, with the help of the good characteristics of the short-term repeatability of electronic weighing instrument indicating value, realize the high accuracy quantitative measurement to the flowmeter flow simultaneously, improve the degree of accuracy to flowmeter calibration or examination result.
Description
Technical Field
The utility model relates to a flow examination technical field specifically is a fluid quantitative metering device.
Background
Current methods of calibrating or certifying flowmeters typically weigh the mass of the outgoing fluid with the aid of an electronic weighing instrument and convert it to a volume for comparison with the flowmeter indication. However, since the standard electronic weighing instrument is easily interfered by external electromagnetic fields and other environmental factors, the long-term stability of the accuracy is poor, and the calibration needs to be repeated at most once a year every six months, which causes high equipment maintenance cost and directly reduces the accuracy of the calibration or calibration result of the flow meter.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a fluid quantitative metering device.
In order to achieve the above object, the technical solution of the present invention is: a fluid metering device comprising:
a structural frame;
an electronic weighing instrument mounted on the structural frame;
a fluid collection device for collecting a fluid to be quantified, placed on the electronic weighing instrument;
the weight hanging rack is used for hanging and holding a loaded weight, and the upper part of the weight hanging rack is connected to the fluid collecting device or the electronic weighing instrument;
the weight, it hangs and holds in weight stores pylon below, the quality of weight is passed through on the electron weighing instrument is passed through to the weight stores pylon, the precision value of weight quality is known value.
The weight is the most common international physical reference at present, and as the carrier of bearing the weight of the mass quantity value, the precision of the weight can reach one hundred thousandth or even higher according to the needs, the precision value of the weight can be kept stable for a long time, and the weight can be generally checked once in 2 years. The utility model discloses fluid quantitative metering device is when using, earlier according to the examination requirement of treating examination flowmeter, confirm the single theoretical fluid volume that need flow out the measurement and calculate the mass value M that corresponds, again on the weight stores pylon load mass value be M's weight and record electronic weighing instrument's indicating value K, behind the uninstallation weight, begin to treat the examination of examination flowmeter, put into fluid collection device with the fluid that the flowmeter flows, concern electronic weighing instrument simultaneously and become K until its indicating value, the actual mass value of the fluid that flows from the flowmeter this moment is M, treat through the conversion and examine and determine whether up to standard its precision of flowmeter calibration. The utility model discloses utilize the high, the good characteristics of long-term stability of precision of weight, with the help of the good characteristics of the short-term repeatability of electronic weighing instrument indicating value, realize the high accuracy ration to the flowmeter flow simultaneously, improve the degree of accuracy to flowmeter calibration or examination result. Meanwhile, the maintenance and verification frequency is reduced, and the use cost of a user is reduced.
Further, still include weight loading mechanism, weight loading mechanism includes base, roof, stand, weight tray and first lift actuating mechanism, the top of stand with roof fixed connection, the bottom of stand with base fixed connection, the weight tray is installed through the guide pin bushing liftable on the stand, first lift actuating mechanism drive the weight tray is followed the up-and-down motion is made to the stand.
Further, the first lifting driving mechanism comprises a speed reducing motor and a screw rod mechanism, the speed reducing motor is fixedly installed on the base, a screw rod of the screw rod mechanism is vertically installed, the bottom end of the screw rod is connected with an output shaft of the speed reducing motor, the top end of the screw rod is installed on the top plate through a bearing, a nut of the screw rod mechanism is fixedly installed on the weight tray, the speed reducing motor drives the screw rod to rotate, and then the weight tray is driven to move up and down along the stand column.
By adopting the preferable scheme, the stable loading and unloading of the weight can be automatically realized.
Further, the weight includes a plurality of weight units that stack up the setting, hangs through the weight between the adjacent weight unit and follows closely the series connection.
By adopting the preferable scheme, when the lower-layer weight unit is jacked, the weight hanging nail is separated from the hanging nail hole of the upper-layer weight unit and is not contacted, so that the unloading of the lower-layer weight unit is realized; when the lower-layer weight unit is hung by self weight, the weight hanging nail is hung with the hanging nail hole of the upper-layer weight unit, and the self weight is loaded on the electronic weighing instrument through the weight hanging frame; through the combination of weight unit, reduced the weight of single weight unit, make things convenient for the weight to move and carry, also make things convenient for to set up a plurality of quantitative specifications according to the flow examination requirement.
Furthermore, a dustproof box is arranged on the periphery of the weight.
By adopting the preferable scheme, the weight is prevented from being attached with dust or corroded, and the high precision of the weight is ensured to be kept for a long time.
The weight loading mechanism, the electronic weighing instrument, the flowmeter to be detected, the first reader and the second reader are in signal connection with the controller, and the controller receives an action signal of the weight loading mechanism, processes the action signal and sends out an instruction signal for controlling the first reader to read weighing data of the electronic weighing instrument; and after receiving the weighing data signals of the electronic weighing instrument, the controller sends out command signals for controlling the second reader to read the flow data of the flowmeter to be detected after processing.
By adopting the preferable scheme, the data is automatically and accurately acquired in real time, and the high-precision verification or calibration of the flowmeter is realized.
Further, the weight stores pylon includes first jib, platform sling and second jib, the quantity of first jib is 2 at least, the top of first jib is installed through spherical joint bearing on the hangers of fluid collection device outer wall, the lower extreme of first jib is installed through spherical joint bearing on the support arm of platform sling, the top of second jib is installed through spherical joint bearing in the centre bore of platform sling, the lower extreme of second jib is connected to the top surface center of weight through the universal joint.
By adopting the preferable scheme, the weight mass can be accurately loaded on the electronic weighing instrument.
Further, the platform sling includes a central column section of thick bamboo and many follows the outside support arm that extends of central column section of thick bamboo, it is adjacent be connected with the horizontal connecting arm between the support arm, each support arm bottom surface is equipped with the slant support arm, the both ends of slant support arm are connected respectively the support arm with between the central column section of thick bamboo, be equipped with the reinforcement support column between each support arm and the slant support arm of below.
By adopting the preferable scheme, the structural strength and the force transmission stability of the hanging scaffold are ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of a fluid quantitative metering device according to the present invention;
FIG. 2 is a schematic view of a hidden frame of the fluid quantitative measuring device of the present invention;
FIG. 3 is a schematic structural diagram of the weight;
FIG. 4 is a schematic structural view of the hanging scaffold;
FIG. 5 is a schematic structural diagram of another embodiment of a fluid quantitative metering device;
FIG. 6 is a front view of another embodiment of a fluid metering device;
fig. 7 is a schematic structural view of the weight removing mechanism.
Names of corresponding parts represented by numerals and letters in the drawings:
10-a structural frame; 20-an electronic weighing instrument; 30-a fluid collection device; 40-weight hanging rack; 401-a first boom; 402-a hanging scaffold; 4021-central column; 4022-a support arm; 4023-horizontal connecting arm; 4024-oblique support arms; 4025-reinforcing support columns; 403-a second boom; 50-weight; 501-weight unit; 502-weight hanging nail; 503-hanging nail holes; 60-weight loading mechanism; 601-a base; 602-a top plate; 603-upright column; 604-weight trays; 605-a first elevation drive mechanism; 70-weight jacking mechanism; 701-lifting a column; 80-weight removal mechanism; 801-a base; 802-a first guide rail; 803-a mobile frame; 8031-lower shelf layer; 8032-vertical support columns; 8033-upper shelf layer; 8034-cantilever; 804 — a first translation drive mechanism; 805-a second guide rail; 806-translating the pallet; 807-a second translation drive mechanism; and 90-a hoisting mechanism.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1 and 2, an embodiment of the present invention is: a fluid metering device comprising:
a structural frame 10;
an electronic weighing instrument 20 mounted on the structural frame 10;
a fluid collection device 30 for collecting the fluid to be metered, placed on the electronic weighing instrument 20;
the weight hanger 40 is used for hanging and holding a loaded weight 50, and the upper part of the weight hanger 40 is connected to the fluid collecting device 30;
and the weight 50 is hung below the weight hanging rack 40, the mass of the weight 50 is transmitted to the electronic weighing instrument 20 through the weight hanging rack 40, and the precision value of the weight 50 is a known value.
The beneficial effect of adopting above-mentioned technical scheme is: when the device is used, firstly, according to the calibration requirement of the flowmeter to be calibrated, the theoretical fluid quantity V which needs to be measured and flows out once is determined, the corresponding mass value M is calculated according to the condition that M is rho V, wherein rho is the density of fluid, then, a weight 50 with the mass value of M is loaded on a weight hanger 40, the indicating value K of the electronic weighing instrument 20 is recorded, after the weight is unloaded, the calibration of the flowmeter to be calibrated is started, the fluid flowing out of the flowmeter is placed into a fluid collecting device 30, meanwhile, the electronic weighing instrument 20 is focused until the indicating value becomes K, the actual mass value of the fluid flowing out of the flowmeter is M, and the calibration is carried out or whether the accuracy of the flowmeter to be calibrated reaches the standard or not is judged through conversion. The utility model discloses utilize the high, the good characteristics of long-term stability of precision of weight, with the help of the good characteristics of the short-term repeatability of electronic weighing instrument indicating value, realize the high accuracy ration to the flowmeter flow simultaneously, improve the degree of accuracy to flowmeter calibration or examination result. Meanwhile, the maintenance and verification frequency is reduced, and the use cost of a user is reduced.
As shown in fig. 2, in other embodiments of the present invention, the weight loading mechanism 60 is further included, the weight loading mechanism 60 includes a base 601, a top plate 602, a column 603, a weight tray 604 and a first lifting driving mechanism 605, the top end of the column 603 is fixedly connected to the top plate 602, the bottom end of the column 603 is fixedly connected to the base 601, the weight tray 604 is installed on the column 603 through a guide sleeve in a liftable manner, and the first lifting driving mechanism 605 drives the weight tray 604 to move up and down along the column 603. The first lifting driving mechanism 605 comprises a speed reducing motor and a screw rod mechanism, the speed reducing motor is fixedly installed on the base 601, a screw rod of the screw rod mechanism is vertically installed, the bottom end of the screw rod is connected with an output shaft of the speed reducing motor, the top end of the screw rod is installed on the top plate 602 through a bearing, a nut of the screw rod mechanism is fixedly installed on the weight tray 604, the speed reducing motor drives the screw rod to rotate, and then the weight tray 604 is driven to lift and move along the upright column 603. The beneficial effect of adopting above-mentioned technical scheme is: the stable loading and unloading of the weights can be automatically realized.
As shown in fig. 3, in other embodiments of the present invention, the weight 50 includes a plurality of weight units 501 stacked in a stacked manner, and the adjacent weight units 501 are connected in series by the weight hanging nails 502. The beneficial effect of adopting above-mentioned technical scheme is: when the lower layer of weight unit is lifted, the weight hanging nail 502 is separated from the hanging nail hole 503 of the upper layer of weight unit without contact, so that the unloading of the lower layer of weight unit is realized; when the lower layer weight unit is suspended by self weight, the weight hanging nail 502 is hung with the hanging nail hole 503 of the upper layer weight unit, and the self weight is loaded on the electronic weighing instrument through the weight hanging rack; through the combination of weight unit, reduced the weight of single weight unit, make things convenient for the weight to move and carry, also make things convenient for to set up a plurality of quantitative specifications according to the flow examination requirement.
In other embodiments of the present invention, a dustproof box is disposed around the weight. The beneficial effect of adopting above-mentioned technical scheme is: prevent dust from adhering to or corroding the weight, ensure that the weight keeps high accuracy for a long time.
In other embodiments of the present invention, the weight loading mechanism, the electronic weighing instrument, the flowmeter to be detected, the first reader and the second reader are all connected to the controller through signals, and after receiving the action signal of the weight loading mechanism, the controller processes and sends out a command signal for controlling the first reader to read the weighing data of the electronic weighing instrument; and after receiving the weighing data signals of the electronic weighing instrument, the controller sends out command signals for controlling the second reader to read the flow data of the flowmeter to be detected after processing. The beneficial effect of adopting above-mentioned technical scheme is: the data acquisition is automatically and accurately carried out in real time, and the high-precision verification or calibration of the flowmeter is realized.
As shown in fig. 2, in other embodiments of the present invention, the weight hanging rack 40 includes a first hanging rod 401, a hanging plate 402 and a second hanging rod 403, the number of the first hanging rod 401 is at least 2, the top end of the first hanging rod 401 is mounted on the hanging lug of the outer wall of the fluid collecting device 30 through a spherical joint bearing, the lower end of the first hanging rod 401 is mounted on the supporting arm of the hanging plate 402 through a spherical joint bearing, the top end of the second hanging rod 403 is mounted in the central hole of the hanging plate 402 through a spherical joint bearing, and the lower end of the second hanging rod 403 is connected to the top surface center of the weight 50 through a universal joint. The beneficial effect of adopting above-mentioned technical scheme is: ensure that the weight mass can be accurately loaded on the electronic weighing instrument.
As shown in fig. 4, in other embodiments of the present invention, the hanging scaffold 402 includes a central column 4021 and a plurality of support arms 4022 extending outward from the central column 4021, a horizontal connection arm 4023 is connected between adjacent support arms 4022, an oblique support arm 4024 is provided on the bottom surface of each support arm 4022, two ends of the oblique support arm 4024 are respectively connected between the support arm 4022 and the central column 4021, and a reinforcing support post 4025 is provided between each support arm 4022 and the oblique support arm 4024 below the support arm 4024. The beneficial effect of adopting above-mentioned technical scheme is: the structural strength and the force transmission stability of the hanging scaffold are ensured.
As shown in fig. 5-7, in other embodiments of the present invention, a weight jacking mechanism 70 is further disposed on the base 601 of the weight loading mechanism 60, a body of the weight jacking mechanism 70 is located below the weight tray 604, the weight jacking mechanism 70 includes at least 4 jacking pillars 701, a hole penetrating up and down for the jacking pillars 701 to pass through is disposed on the weight tray 604, and the weight jacking mechanism 70 can drive the jacking pillars 701 to ascend and jack the weight 50 up from the weight tray 604 and separate from the weight tray 604; the weight removing mechanism 80 is arranged on one side of the weight loading mechanism 60, the weight removing mechanism 80 comprises a base 801, a first guide rail 802, a moving frame 803, a first translation driving mechanism 804, a second guide rail 805, a translation supporting plate 806 and a second translation driving mechanism 807, the moving frame 803 comprises a lower frame layer 8031, a vertical supporting column 8032 and an upper frame layer 8033, the vertical supporting column 8032 is connected between the lower frame layer 8031 and the upper frame layer 8033, in the translation direction of the moving frame 803, the length of the lower frame layer 8031 is smaller than that of the upper frame layer 8033, the part of the upper frame layer 8033, which is longer than the lower frame layer 8031, is a cantilever 8034, the cantilever 8034 is arranged on one side close to the weight loading mechanism 60, the vertical supporting column is not arranged at the position corresponding to the lower position of the cantilever 8034, the first guide rail 802 is arranged on the base 801, the lower frame layer 8031 of the moving frame 803 can be translationally arranged on the first guide rail 802, the first translation driving mechanism 804 drives the moving frame 803 to translate along the first guide rail 802, the second guide 805 is mounted on the upper frame layer 8033 of the movable frame, the translation support plate 806 is movably mounted on the second guide 805, and the second translation driving mechanism 807 drives the translation support plate 806 to translate along the second guide 805. A weight verification comparator is also provided on one side of the weight removal mechanism 80, as well as a lifting mechanism 90 for moving the weight from the translation pallet 806 to the weight verification comparator. When the weight 50 needs to be checked, the weight 50 is firstly separated from the weight hanging rack 40, the weight loading mechanism 60 descends the weight, so that the weight tray 604 is lowered to be lower than the bottom surface height of the upper rack layer 8033 of the movable rack, the lifting column 701 of the weight jacking mechanism jacks up the weight 50 so that the weight is separated from the weight tray 604, meanwhile, the bottom surface height of the weight is higher than the top surface height of the translation supporting plate 806, the movable rack 803 is moved to one side of the weight loading mechanism 60 by the first translation driving mechanism 804, so that the upper rack layer cantilever 8034 of the movable rack extends to the lower part of the weight, the weight tray 604 is driven by the first lifting mechanism of the weight loading mechanism to ascend so as to abut against the bottom surface of the upper rack layer cantilever 8034 of the movable rack and then stop, the translation supporting plate 806 is driven to move to one side of the cantilever 8034 by the second translation driving mechanism 807, the weight jacking mechanism drives the lifting column 701 to descend so as to completely fall onto the translation supporting plate 806, the second translation driving mechanism 807 drives the translation supporting plate 806 and the weight 50 to move out of the weight loading mechanism to the non-cantilever side of the movable frame 803, the first lifting mechanism of the weight loading mechanism drives the weight tray 604 to descend and separate from the upper-frame layer cantilever 8034 of the movable frame, and finally the first translation driving mechanism 804 drives the whole movable frame 803 and the weight 50 to move out and keep away from the weight loading mechanism, so that smooth and stable transfer of the large-tonnage weight is realized, and finally the weight is moved to a weight verification comparator through a hoisting mechanism for verification.
The utility model discloses a use method, including following step:
step 1, before fluid to be measured is added into a fluid collecting device, calculating a corresponding mass value M according to a target flow value V of the fluid to be measured, loading a weight with the mass value M and a precision value of a known value on a weight hanger, and reading a reading K of an electronic weighing instrument after the weight is loaded;
step 2, unloading the loaded weight with the mass value M from the weight hanger;
step 3, putting the fluid to be quantified into the fluid collecting device until the reading of the electronic weighing instrument becomes K, wherein the flow value flowing into the fluid collecting device is the target flow value V;
and 4, selecting weights with corresponding mass as required, and repeating the steps 1 to 3.
The high-precision quantification of the flow of the flowmeter is realized by utilizing the characteristics of high precision and good long-term stability of the weights and the characteristic of good short-term repeatability of the indication value of the electronic weighing instrument, and the accuracy of the calibration or verification result of the flowmeter is improved.
The above embodiments are only for illustrating the technical conception and the features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and the protection scope of the present invention can not be limited thereby, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.
Claims (9)
1. A fluid metering device, comprising:
a structural frame;
an electronic weighing instrument mounted on the structural frame;
a fluid collection device for collecting a fluid to be quantified, placed on the electronic weighing instrument;
the weight hanging rack is used for hanging and holding a loaded weight, and the upper part of the weight hanging rack is connected to the fluid collecting device or the electronic weighing instrument;
the weight is hung below the weight hanging rack, and the precision value of the weight is a known value.
2. The fluid quantitative metering device of claim 1, further comprising a weight loading mechanism, wherein the weight loading mechanism comprises a base, a top plate, a column, a weight tray and a first lifting driving mechanism, the top end of the column is fixedly connected with the top plate, the bottom end of the column is fixedly connected with the base, the weight tray is arranged on the column in a liftable manner through a guide sleeve, and the first lifting driving mechanism drives the weight tray to move up and down along the column.
3. The fluid quantitative metering device of claim 2, wherein the first lifting driving mechanism comprises a speed reduction motor and a screw mechanism, the speed reduction motor is fixedly mounted on the base, a screw rod of the screw mechanism is vertically mounted, the bottom end of the screw rod is connected with an output shaft of the speed reduction motor, the top end of the screw rod is mounted on the top plate through a bearing, a nut of the screw mechanism is fixedly mounted on the weight tray, and the speed reduction motor drives the screw rod to rotate, so that the weight tray is driven to move up and down along the upright post.
4. The fluid quantitative metering device of claim 2, wherein the weight comprises a plurality of weight units which are arranged in a stacked manner, and adjacent weight units are connected in series through weight hanging nails.
5. The apparatus according to claim 4, wherein a dust-proof box is provided around the weight.
6. The fluid quantitative metering device according to claim 2, further comprising a controller, a first reader and a second reader, wherein the weight loading mechanism, the electronic weighing instrument, the flow meter to be detected, the first reader and the second reader are in signal connection with the controller, and the controller receives the action signal of the weight loading mechanism and processes the action signal and sends out a command signal for controlling the first reader to read the weighing data of the electronic weighing instrument; and after receiving the weighing data signals of the electronic weighing instrument, the controller sends out command signals for controlling the second reader to read the flow data of the flowmeter to be detected after processing.
7. The fluid quantitative measurement device according to claim 1, wherein the weight hanger comprises a first hanger, a hanging scaffold and a second hanger, the number of the first hanger is at least 2, the top end of the first hanger is mounted on the hanging lug on the outer wall of the fluid collection device through a spherical joint bearing, the lower end of the first hanger is mounted on the supporting arm of the hanging scaffold through a spherical joint bearing, the top end of the second hanger is mounted in the central hole of the hanging scaffold through a spherical joint bearing, and the lower end of the second hanger is connected to the top center of the weight through a universal joint.
8. The fluid quantitative measurement device according to claim 7, wherein the hanging scaffold comprises a central cylinder and a plurality of support arms extending outward from the central cylinder, a horizontal connecting arm is connected between adjacent support arms, an oblique support arm is provided on a bottom surface of each support arm, two ends of the oblique support arm are respectively connected between the support arm and the central cylinder, and a reinforcing support column is provided between each support arm and the oblique support arm below the support arm.
9. The fluid metering device of claim 2, further comprising:
the weight jacking mechanism is arranged on the base below the weight tray and used for jacking the weights from the weight tray and separating the weights from the weight tray;
the weight removing mechanism is used for removing the weight from the weight loading mechanism;
and the hoisting mechanism is used for moving the weight to the weight verification comparator for verification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120291510.4U CN214471198U (en) | 2021-02-02 | 2021-02-02 | Fluid quantitative metering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120291510.4U CN214471198U (en) | 2021-02-02 | 2021-02-02 | Fluid quantitative metering device |
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| Publication Number | Publication Date |
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| CN214471198U true CN214471198U (en) | 2021-10-22 |
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| CN202120291510.4U Active CN214471198U (en) | 2021-02-02 | 2021-02-02 | Fluid quantitative metering device |
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| CN (1) | CN214471198U (en) |
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2021
- 2021-02-02 CN CN202120291510.4U patent/CN214471198U/en active Active
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