CN211205459U - Device for verifying transmitter of scraper flowmeter - Google Patents
Device for verifying transmitter of scraper flowmeter Download PDFInfo
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- CN211205459U CN211205459U CN201921976194.3U CN201921976194U CN211205459U CN 211205459 U CN211205459 U CN 211205459U CN 201921976194 U CN201921976194 U CN 201921976194U CN 211205459 U CN211205459 U CN 211205459U
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Abstract
The application relates to the technical field of instrument calibration, and discloses a device for calibration of a scraper flowmeter communicator, including L B type flowmeter gauge outfit, by calibration communicator, a transmission device, drive mechanism, fan blade seal cover and intelligent flow totalizer, by the conical gear meshing of calibration communicator and L B type flowmeter gauge outfit, a transmission device's one end is connected with L B type flowmeter gauge outfit's counting mechanism, the other end is connected with drive mechanism, drive mechanism's the other end is connected with the fan blade, the seal cover is connected with L B type flowmeter gauge outfit, a transmission device, drive mechanism and fan blade are located the confined space that seal cover and L B type flowmeter gauge outfit formed, intelligent flow totalizer and by communication connection between the calibration communicator, this application can be calibrated to the accuracy of pulse communicator, make up the not enough of calibration of current L B type flowmeter communicator, make the more simple and convenient.
Description
Technical Field
The utility model relates to an instrument check-up technical field, concretely relates to a device for calibration of scraper flowmeter sender.
Background
The L B type scraper flowmeter is a positive displacement flowmeter, and its working principle is that when liquid passes through the flowmeter, a certain pressure difference is produced between inlet and outlet of the flowmeter, and the moving part of the flowmeter will move under the action of the pressure difference and discharge the liquid from inlet to outlet, in the process, the liquid is repeatedly filled in the chamber of the flowmeter many times, and under the given condition, the volume of the chamber is determined, and the cumulative volume flow of the fluid passing through the flowmeter can be obtained as long as the moving times of the moving part are measured.
For example, in the prior art, such as the utility model with patent publication number CN2689193, publication number of 30.03.2005, the patent name "calibration device for flow meter counter", its technical scheme is that a motor (2) is installed in an operation console (1), a connecting piece (4) is fixed above the operation console, a lower shaft (4-1) of the connecting piece is connected with an output shaft of the motor, an output end of the connecting piece is connected with a counting end of a measured flow meter counter (5), a pulse transmitter (3) is fixed on an outer side surface of a revolution input shaft (5-1) of the measured flow meter counter, a motor revolution speed control device and a pulse signal display device of the pulse transmitter are both installed on a housing of the operation console (1), a pulse signal output end of the pulse transmitter is connected with a pulse signal input end of the pulse signal display device installed on the operation console through a signal line (6).
Disclosure of Invention
In order to overcome the problem and the defect that exist among the above-mentioned prior art, the utility model aims at remedying the not enough of current L B type scraper flow meter sender check-up, make the check-up of sender simpler and convenient, improve check-up efficiency.
In order to realize the purpose of the utility model, the technical scheme of the utility model is as follows:
a device for checking a transmitter of a scraper flowmeter comprises an L B type flowmeter head, a corrected transmitter, a first transmission device, a transmission mechanism, a fan blade, a sealing cover and an intelligent flow totalizer, wherein a conical gear of the corrected transmitter is meshed with a conical gear of the L B type flowmeter head, one end of the first transmission device is connected with a counting mechanism of the L B type flowmeter head, the other end of the first transmission device is connected with the transmission mechanism, the other end of the transmission mechanism is connected with the fan blade, the sealing cover is connected with the L B type flowmeter head, the first transmission device, the transmission mechanism and the fan blade are located in a sealed space formed by the sealing cover and the L B type flowmeter head, and the intelligent flow totalizer is in communication connection with the corrected transmitter.
Preferably, the transmission mechanism comprises a second transmission device, a sleeve, a third transmission device and a connecting bolt, the second transmission device and the third transmission device are respectively buckled into two ends of the sleeve and are connected together through the connecting bolt to form a transmission assembly, the other end of the second transmission device and the first transmission device are assembled in an interference fit mode, and the rear end of the third transmission device is connected with the fan blade through a key connection structure.
Preferably, the sealing cover is provided with compressed air input and output holes.
Preferably, the sealing cover is connected with the L B type flowmeter head through a bolt structure.
The beneficial effect of this application:
(1) this application can check-up the accuracy of pulse signaling apparatus, remedies the not enough of current L B type scraper flowmeter signaling apparatus check-up, makes the check-up of signaling apparatus simpler and convenient, and whole verifying attachment only need assemble the gauge outfit and can check-up, and consequently the assembly is very convenient, great saving man-hour.
(2) This application adopts compressed air to be the driving energy, and control pressure adjusts pulse output, and whole check-up operation process safety is risk-free to efficiency promotes obviously, and the device precision is also higher.
(3) The application has good stability, and the failure rate of the mechanical meter head of the flowmeter is far less than that of the photoelectric pulse signal transmitter.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present application;
FIG. 2 is a front view of the sealing cap of the present application;
FIG. 3 is a schematic cross-sectional view of the seal housing of the present application;
FIG. 4 is a schematic view of a fan blade of the present application;
FIG. 5 is a schematic sectional view of a fan blade according to the present application;
FIG. 6 is a schematic structural view of a transmission according to the second embodiment of the present application;
FIG. 7 is a schematic view of the third embodiment of the present application;
FIG. 8 is a schematic view of the construction of the bushing of the present application;
FIG. 9 is a flow chart of the verification process of the present application.
In the drawings:
1. l B type flowmeter head, 2 corrected signal generator, 3, the first driving device, 4, the driving mechanism, 5, the fan blade, 6, the sealing cover, 7, the intelligent flow totalizer, 41, the second driving device, 42, the sleeve, 43, the third driving device, 44, the connecting bolt.
Detailed Description
The present invention will be described in further detail with reference to examples, but the present invention is not limited thereto.
Example 1
The embodiment discloses a device for checking a transmitter of a scraper flowmeter, which comprises a L B-type flowmeter head 1, a corrected transmitter 2, a first transmission device 3, a transmission mechanism 4, a fan blade 5, a sealing cover 6 and an intelligent flow totalizer 7, wherein a bevel gear of the corrected transmitter 2 is meshed with a bevel gear of the L B-type flowmeter head 1, one end of the first transmission device 3 is connected with a counting mechanism of the L B-type flowmeter head 1, the other end of the first transmission device is connected with the transmission mechanism 4, the other end of the transmission mechanism 4 is connected with the fan blade 5, the sealing cover 6 is detachably connected with the L B-type flowmeter head 1, a closed space is formed between the first transmission device 3 and the L B-type flowmeter head 1, the first transmission device 4 and the fan blade 5 are located in the closed space, and the intelligent flow totalizer 7 is in communication connection with the corrected transmitter 2, as shown in the attached figure 1 of the specification.
Further, the transmission mechanism comprises a second transmission device 41, a sleeve 42, a third transmission device 43 and a connecting bolt 44; referring to the attached drawing 1 of the specification, a second transmission device 41 and a third transmission device 43 are respectively buckled into two ends of a sleeve 42, referring to the attached drawing 4 of the specification, a through hole for a connecting bolt 44 to pass through is arranged in the center of the second transmission device 41 along the length direction of the second transmission device, one end of the connecting bolt 44 penetrates through the second transmission device 41 and extends into the third transmission device 43, the two transmission devices are connected together through the connecting bolt 44 to form a transmission assembly, the other end of the second transmission device 41 and the first transmission device 3 are assembled in an interference fit manner, referring to the attached drawing 5 of the specification, the front end part of the third transmission device 43 is similar to the second transmission device 41, the rear end part is a slender shaft structure, a key groove is arranged on the shaft, a through hole for the shaft to pass through is arranged in the center of the fan blade along the axial direction, and a key matched with the key groove is arranged in the through hole, the key groove is further provided with a clamp spring which is located at the rear end of the key and used for preventing the fan blade from moving in the axial direction, and the whole third transmission device 43 is connected with the fan blade through a key connection structure and used for transmitting the rotation power of the fan blade.
Furthermore, the sealing cover 6 is provided with compressed air input and output holes, which play a role of sealing and pressurizing and prevent the compressed air from excessively dissipating.
Further, the sealing cover 6 is detachably connected with the L B type flowmeter head 1 through a bolt structure.
When compressed air with certain pressure is input into the sealed cover, the fan blade starts to rotate under the action of the compressed air to drive a transmission mechanism consisting of a second transmission device, a sleeve, a third rotation device and a connecting bolt, the rotating force is transmitted to the first transmission device, a counting mechanism of an L B type scraper flowmeter connected with the first transmission device is driven to rotate, and finally a dial pointer is driven to start to rotate and count.
Example 2
The method comprises the steps of calibrating an L B type scraper flowmeter according to a standard calibration flow, loading a transmitter to be calibrated into the flowmeter, recording initial data, inputting 4 groups of flow signals of 200L, and transmitting the signals to an intelligent flow integrating instrument in a control system by the calibrated transmitter for display, so that the remote transmission signals can be regarded as the flow values accumulated by the pulse transmitter.
Watch 1
Meanwhile, after the flowmeter calibration platform is calibrated, the same transmitter is installed in the device for calibration, rated compressed air pressure is input (self-adjustment is carried out according to the flow size), and the measured data are detailed in a table II.
Watch two
Comparing the data in table one and table two shows that the maximum relative error is-0.1%, the minimum is 0, and the requirement of the error of 0.5 grade plus or minus 0.5% is met, so that the conclusion can be drawn: the checking device can meet the checking requirement of the impulse transmitter with the accuracy grade equal to or lower than 0.5 grade.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention all fall into the protection scope of the present invention to any simple modification and equivalent change of the above embodiments.
Claims (4)
1. A device for verifying a transmitter of a scraper flowmeter is characterized by comprising an L B type flowmeter head (1), a calibrated transmitter (2), a first transmission device (3), a transmission mechanism (4), a fan blade (5), a sealing cover (6) and an intelligent flow integrating instrument (7), wherein a bevel gear of the calibrated transmitter (2) is meshed with a bevel gear of the L B type flowmeter head (1), one end of the first transmission device (3) is connected with a counting mechanism of the L B type flowmeter head (1), the other end of the first transmission device is connected with the transmission mechanism (4), the other end of the transmission mechanism (4) is connected with the fan blade (5), the sealing cover (6) is connected with the L B type flowmeter head (1), the first transmission device (3), the transmission mechanism (4) and the fan blade (5) are located in a sealed space formed by the sealing cover (6) and the L B type flowmeter head (1), and the intelligent flow integrating instrument (7) is in communication connection with the calibrated transmitter (2).
2. The apparatus of claim 1, wherein the transmitter comprises: drive mechanism (4) are including No. two transmission (41), sleeve pipe (42), No. three transmission (43) and connecting bolt (44), and No. two transmission (41) and No. three transmission (43) are detained the both ends of sleeve pipe (42) respectively to link together through connecting bolt (44), form a transmission sub-assembly, and No. two transmission (41)'s the other end adopts interference fit to assemble with transmission (3), and No. three transmission (43)'s rear end is then connected with fan blade (5) through key-type connection structure.
3. The apparatus of claim 1, wherein the transmitter comprises: and compressed air input and output holes are formed in the sealing cover (6).
4. The device for verifying the transmitter of the scraper flow meter is characterized in that the sealing cover (6) is connected with the L B type flow meter head (1) through a bolt structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921976194.3U CN211205459U (en) | 2019-11-15 | 2019-11-15 | Device for verifying transmitter of scraper flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921976194.3U CN211205459U (en) | 2019-11-15 | 2019-11-15 | Device for verifying transmitter of scraper flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211205459U true CN211205459U (en) | 2020-08-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921976194.3U Active CN211205459U (en) | 2019-11-15 | 2019-11-15 | Device for verifying transmitter of scraper flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211205459U (en) |
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2019
- 2019-11-15 CN CN201921976194.3U patent/CN211205459U/en active Active
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