CN111380599A - Commutator for improving accuracy of flow standard device - Google Patents
Commutator for improving accuracy of flow standard device Download PDFInfo
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- CN111380599A CN111380599A CN202010330670.5A CN202010330670A CN111380599A CN 111380599 A CN111380599 A CN 111380599A CN 202010330670 A CN202010330670 A CN 202010330670A CN 111380599 A CN111380599 A CN 111380599A
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- 238000007789 sealing Methods 0.000 claims description 33
- 230000005622 photoelectricity Effects 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 20
- 238000005259 measurement Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 8
- 238000002360 preparation method Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/10—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
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Abstract
The invention relates to a commutator for improving the accuracy of a flow standard device, which comprises a nozzle connecting pipe, wherein a tubular structure consisting of two parallel fixed side plates and two parallel movable side plates is arranged below the nozzle connecting pipe, a support frame is arranged outside the fixed side plates, the movable side plates comprise a fixed part and a movable part, the top end of the fixed part is hinged with the bottom end of the movable part, a shunt shell is arranged below the tubular structure, and a first driving device is arranged outside the shunt shell. The problem of fixed spout velocity of flow when little flow low excessively, not full pipe flow and liquid flow asymmetry and large-traffic velocity of flow too fast medium appear atomizing easily and cause measure inaccurate technical problem is solved, guarantee that the spout outlet velocity of flow is even, stable, reduce because of the influence to the commutator symmetry that the spout velocity of flow is inhomogeneous causes, improve the degree of accuracy of commutator. The invention has convenient adjustment and use and wide market prospect.
Description
Technical Field
The invention relates to the field of commutators, in particular to a commutator for improving the accuracy of a flow standard device.
Background
At present, the performance of various flowmeters is gradually improved, and along with the development of fine flow metering, the urgent need of people for a high-accuracy flow standard device (hereinafter referred to as a device) is highlighted. Factors influencing the accuracy of the device are many, and the performance of the standard devices such as an electronic scale and a standard metal measuring device is guaranteed as standard equipment. The commutator is one of indispensable devices in a mass method and a volume method, and the performance of the commutator directly influences the final uncertainty of the whole device. More and more users of the flow standard device find that the influence of the outlet flow pattern of the nozzle of the commutator on the symmetry of the commutator is a non-negligible main factor influencing the overall accuracy of the device. Therefore, in the high-accuracy liquid flow standard device project, the introduced uncertainty component of the commutator is reduced by pertinently solving the outlet flow state of the commutator, so that the accuracy of the whole flow standard device is improved. The commutator is a non-standardized device, the overall uncertainty level of the device and the installation process, the forms of downstream connecting devices (weighing containers, work meters and bypass pipes) and the like have great relations, and suitable products cannot be purchased in the market. The commutator with high accuracy and stable performance is necessary equipment of the current flow device.
The conventional commutator can be divided into an open type and a closed type according to the structural form. The pneumatic commutator and the electric commutator are classified according to the driving medium. The open commutator can be divided into a swinging nozzle type commutator, a swinging bucket type commutator and a movable commutator according to the structural member form of switching water flow, and the area of the water outlet of the nozzle of the commutator is constant in the commutator of the traditional form. This form has the following problems:
1. when the flow is small, the spout is not full of water when water flows out of the spout, the water flow distribution state is not uniform, and the problem that the water flow is close to a side flow exists. Under the condition that the time difference between the switching-in travel and the switching-out travel of the commutator is qualified, the flow is asymmetric, and the accuracy of flow measurement is influenced.
2. The tail end of the experiment pipeline is low in flow speed and small in outlet pressure in small flow, gas is easily separated from the medium, the state of the medium passing through the detected flowmeter and entering the standard device is inconsistent, and the metering result is influenced.
3. When the flow rate is high, the flow rate at the tail end of the test pipeline is high, the outlet pressure is high, and partial atomization is generated due to the fact that the flow rate is too high easily generated in the medium, so that the metering result is influenced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the commutator with the adjustable tail end flow velocity and used for improving the accuracy of the flow standard device, which is used for overcoming the defects in the prior art.
The technical scheme adopted by the invention is as follows: the utility model provides a commutator for improving flow standard device degree of accuracy, includes the spout connecting pipe, the below of spout connecting pipe is equipped with the tubular structure that comprises two fixed curb plates that are parallel to each other and two movable curb plates that are parallel to each other, and the fixed curb plate outside is provided with the support frame, movable curb plate include fixed part and movable part, the top of fixed part and the bottom of movable part are articulated, the below of tubular structure be provided with the reposition of redundant personnel casing, the reposition of redundant personnel casing outside is provided with a drive arrangement.
Preferably, the first driving device comprises a driving cylinder, an extension rod of the driving cylinder is connected with the outer wall of the shunt shell, a sliding bearing mounting ring is arranged on the outer side of the shunt shell, a limiting shaft is sleeved in the sliding bearing mounting ring, a sliding bearing is arranged between the limiting shaft and the sliding bearing mounting ring, two ends of the sliding bearing mounting ring are respectively and fixedly provided with a limiting shaft support frame, and the limiting shaft support frame is arranged on the support frame.
Preferably, fixed part and movable part between be provided with first sealing strip, seted up the sealing strip mounting groove on the top surface of fixed part, the side of fixed part and the side of movable part, the sealing strip mounting groove adopts virtual n font slot-shaped structure, is provided with the second sealing strip in the sealing strip mounting groove, the part and the fixed curb plate swing joint of second sealing strip, first sealing strip and second sealing strip fixed connection, first sealing strip and second sealing strip are equallyd divide and are adopted the strip structure of making by the rubber material respectively.
Preferably, the support frame on be equipped with step motor, be provided with ball on step motor's the output, ball's below is provided with linear guide, divide equally between ball and two movable parts and do not be provided with supplementary limit drive device, supplementary limit drive device include actuating lever mount pad, drive dead lever and drive dwang, the suit of actuating lever mount pad is at linear guide and ball, ball and actuating lever mount pad threaded connection, actuating lever mount pad and linear guide swing joint, the one end and the actuating lever mount pad fixed connection of drive dead lever, the other end and the drive dwang one end of drive dead lever are articulated, the lateral surface of the drive dwang other end and movable part is articulated.
Preferably, one end of the nozzle connecting pipe is sleeved with a connecting flange, the other end of the nozzle connecting pipe is sleeved with a connecting plate, and the fixed side plate and the fixed part are respectively fixedly connected with the connecting plate.
Preferably, the reposition of redundant personnel casing include outlet pipe and inlet tube, be provided with the reposition of redundant personnel baffle in the inlet tube, the inlet tube be located the top of outlet pipe, the quantity of outlet pipe adopts two, two the outlet pipe all divide respectively with the inlet tube is linked together, the reposition of redundant personnel baffle is located two between the outlet pipe.
Preferably, the output end of the driving cylinder is connected with one end of the shunt shell, a second photoelectric limiting piece is fixedly arranged at the other end of the shunt shell, a second photoelectric switch is fixedly arranged on a support frame on one side of the second photoelectric limiting piece, two limiting shafts are arranged, the two limiting shafts are symmetrically arranged on two sides of the shunt shell, and the number of the sliding bearing mounting rings and the number of the sliding bearings are equally divided to correspond to the number of the limiting shafts.
Preferably, the ball screw on the symmetry be provided with two screw supporting seats, the below of two screw supporting seats is provided with mounting plate, linear guide installs on mounting plate, mounting plate installs on the support frame, two screw supporting seats all correspond and are provided with the spacing piece of first photoelectricity, the last first photoelectric switch that is provided with of mounting plate, one of them spacing piece of first photoelectricity is installed between two spacing pieces of first photoelectricity, wherein the outside at two spacing pieces of first photoelectricity is installed to another spacing piece of first photoelectricity.
The invention has the beneficial effects that: firstly, the adjustable nozzle outlet area is realized, the requirement that the cavity can be filled with the medium in the nozzle under different flow rates is met, the medium is prevented from being dispersed due to too low flow velocity and atomized due to too high flow velocity after passing through the nozzle, the medium is always in a regular rectangle after passing through the nozzle, and the asymmetry of the reversing is reduced; and the back pressure of a rear-end pipeline is increased in a small flow so as to avoid gas separation. Secondly, the stepping motor drives the ball screw to rotate, and the rotation motion of the ball screw is converted into the linear motion of the driving rod mounting seat through the linear guide rail, so that the driving fixed rod and the driving rotating rod which are arranged on the driving rod mounting seat are driven to move, and the movable part of the movable side plate is driven to swing. The components are standardized products, the interchange type is good, the precision is high, the maintenance performance of a customer in the use process is good, and the use cost is low. And finally, the driving cylinder is a universal product, the interchange type is good, the switching of the switching-in position and the switching-out position of the shunt shell is more convenient, and the change of the adjusting position in the use process is avoided. The invention has the advantages of simple structure, convenient operation, ingenious design, great improvement on the working efficiency, good social and economic benefits and easy popularization and use.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the components of the present invention.
FIG. 3 is a schematic structural view of the diverter housing component of the present invention.
Fig. 4 is a schematic view of the construction of the driving cylinder unit of the present invention.
Fig. 5 is a front view of the movable side plate member of the present invention.
Fig. 6 is a left side view of the movable side panel section of the present invention.
Fig. 7 is a schematic view of the structure of the component of the present invention.
Detailed Description
As shown in fig. 1, 2, 3, 4, 5, 6, and 7, a commutator for improving accuracy of a flow standard device includes a nozzle connecting pipe 1, one end of the nozzle connecting pipe 1 is sleeved with a connecting flange 21, the other end of the nozzle connecting pipe 1 is sleeved with a connecting plate 22, and a fixed side plate 2 and a fixed part 4 are respectively and fixedly connected with the connecting plate 22. The below of spout connecting pipe 1 is equipped with the tubular structure that comprises two fixed curb plates 2 that are parallel to each other and two movable side plates that are parallel to each other, and the 2 outsides of fixed curb plate are provided with support frame 3, movable side plate include fixed part 4 and movable part 5, the top of fixed part 4 and the bottom of movable part 5 are articulated, the below of tubular structure be provided with reposition of redundant personnel casing 6, reposition of redundant personnel casing 6 outside is provided with a drive arrangement. The fixed side plate 2 is preferably of a plate-shaped structure made of transparent PC materials, the materials are convenient for observation and convenient for observation, the medium in the middle transition pipe section formed by the fixed part 4 of the movable side plate and the fixed side plate 2 changes the medium form inside the original medium flow state after passing through the assembly, and the accuracy of experimental data is convenient to improve.
First drive arrangement including driving actuating cylinder 7, the outer wall that drives actuating cylinder 7's extension bar and reposition of redundant personnel casing 6 is connected, reposition of redundant personnel casing 6's the outside is provided with slide bearing collar 8, slide bearing collar 8 endotheca is equipped with spacing axle 9, is provided with slide bearing 10 between spacing axle 9 and the slide bearing collar 8, slide bearing collar 8's both ends are equallyd divide and are do not fixedly be provided with spacing axle support frame 11, spacing axle support frame 11 is installed on support frame 3. The output end of the driving cylinder 7 is fixedly connected with one end of the shunt shell 6, the other end of the shunt shell 6 is fixedly provided with a second photoelectric limiting sheet 28, the support frame 3 on one side of the second photoelectric limiting sheet 28 is fixedly provided with a second photoelectric switch 29, the number of the limiting shafts 9 is two, the two limiting shafts 9 are symmetrically arranged on two sides of the shunt shell 6, and the number of the sliding bearing mounting rings 8 and the number of the sliding bearings 10 are equally divided to correspond to the number of the limiting shafts 9.
In order to solve the technical problem that the limiting shaft 9, the sliding bearing mounting ring 8 and the sliding bearing 10 are easy to corrode due to long-term operation in a humid environment, the limiting shaft 9, the sliding bearing mounting ring 8 and the sliding bearing 10 are preferably made of stainless steel.
Fixed part 4 and movable part 5 between be provided with first sealing strip 12, fixed part 4's top surface, fixed part 4's side and movable part 5's side have been seted up sealing strip mounting groove 13, sealing strip mounting groove 13 adopts virtual n font groove shaped structure, be provided with second sealing strip 14 in the sealing strip mounting groove 13, second sealing strip 14's part and fixed curb plate 2 swing joint, first sealing strip 12 and second sealing strip 14 fixed connection, first sealing strip 12 and second sealing strip 14 are equallyd divide and are do not adopted the strip structure of being made by the rubber material. The technical problem of keeping the sealing of the water flow inside the movable side plate in a fixed state and a swinging state is solved by adding the first sealing strip 12 and the second sealing strip 14.
Support frame 3 on be equipped with step motor 15, be provided with ball 16 on step motor 15's the output, ball 16's below is provided with linear guide 17, equally divide between ball 16 and two movable part 5 and do not be provided with supplementary spacing drive arrangement, supplementary spacing drive arrangement include actuating lever mount pad 18, drive dead lever 19 and drive dwang 20, 18 suits of actuating lever mount pad are at linear guide 17 and ball 16, ball 16 and 18 threaded connection of actuating lever mount pad, actuating lever mount pad 18 and linear guide 17 swing joint, the one end and the 18 fixed connection of actuating lever mount pad of drive dead lever 19, the other end and the 20 one end of drive dwang of drive dead lever 19 are articulated, the lateral surface of the 20 other ends of drive dwang and movable part 5 is articulated. The adoption of the stepping motor 15, the ball screw 16, the driving rod mounting seat 18 and the linkage consisting of the driving fixed rod 19 and the driving rotating rod 20 enables the movable parts 5 of the two movable side plates to swing more uniformly, thereby avoiding the influence on the medium shapes in the movable side plates and the fixed side plates 2 caused by non-uniform speed due to the adoption of other driving modes.
Reposition of redundant personnel casing 6 include outlet pipe and inlet tube, be provided with reposition of redundant personnel baffle 27 in the inlet tube, the inlet tube is located the top of outlet pipe, the quantity of outlet pipe adopts two, two the outlet pipe equally divide respectively with the inlet tube is linked together, reposition of redundant personnel baffle 27 is located two between the outlet pipe. Ball 16 on the symmetry be provided with two lead screw supporting seats 23, the below of two lead screw supporting seats 23 is provided with mounting plate 24, linear guide 17 installs on mounting plate 24, mounting plate 24 installs on support frame 3, two lead screw supporting seats 23 all correspond and are provided with spacing piece 25 of photoelectricity, be provided with photoelectric switch 26 on mounting plate 24, one of them spacing piece 25 of photoelectricity is installed between two spacing pieces 25 of photoelectricity, wherein the outside at two spacing pieces 25 of photoelectricity is installed to another spacing piece 25 of photoelectricity. The maximum angle and the minimum angle of the swing of the movable part 5 of the movable side plate can be better controlled by adding two photoelectric limiting sheets 25.
Example (b): as shown in fig. 1, 2, 3, 4, 5, 6, and 7, in the stage of installing the device before the official measurement, the connection flange 21 is connected to the downstream outlet of the experimental pipeline in the flow standard device, the necessary devices including the switch valve, the detected flow meter, the meter clamping device, the adjusting valve, and the liquid working standard device are arranged in the experimental pipeline, one outlet pipe of the shunt shell is connected to the liquid working standard device, and the other outlet pipe is connected to the return pipeline. And the water inlet pipelines of the return pipeline experiment pipelines are connected to form a water supply circulating system.
After the installation stage is finished, a pre-debugging process is carried out, firstly, a water supply circulating system is opened, water flows through a switch valve, a detected flow meter, a meter clamping device and a regulating valve, a medium driven by the water pump enters a nozzle connecting pipe 1 and then enters a middle transition pipe section consisting of two fixed side plates 2 which are parallel to each other and fixed parts 4 of two movable side plates which are parallel to each other, in the process, the state of the medium in the middle transition pipe section is observed, correspondingly, a stepping motor 15 drives a ball screw 16 to rotate, a driving rod mounting seat 18 is driven to translate on the ball screw 16 and a linear guide rail 17 so as to drive a driving fixing rod 19 and a driving rotating rod 20 to move, and finally, the movable part 5 of the movable side plates is driven to swing, so that the medium at the tail ends of the movable parts 5 of the movable side plates is made into regular rectangular fluid, the rectangular fluid enters a shunt shell 6 and enters a return pipeline through another When the water inlet pipeline and the installation pipeline of the to-be-detected flowmeter are free of air bubbles and the medium flows at a constant speed, the pre-debugging process is completed, the product enters a measurement preparation state, and in the measurement preparation state, water flows out of the to-be-detected flowmeter and then flows out of the shunting shell 6 through the tail ends of the movable parts 5 of the two movable side plates and the hole-shaped structure formed by the two fixed side plates 2 and enters the to-be-detected flowmeter again through the return pipeline.
After the preparation of the measurement state is finished, the driving cylinder 7 drives the shunt shell 6 to translate on the limiting shaft 9, when an outlet pipe connected to the liquid working standard device on the shunt shell 6 is located below a hole-shaped structure formed by the tail ends of the movable parts 5 of the two movable side plates and the two fixed side plates 2, the driving cylinder 7 stops working, at the moment, the product enters an actual measurement state, and in the actual measurement state, water flow is detected to flow out of the flow meter, then flows into the shunt shell 6 through the tail ends of the movable parts 5 of the two movable side plates and the hole-shaped structure formed by the two fixed side plates 2, and finally enters the liquid working standard device. In the process, when the shunt partition plate 27 in the shunt shell 6 is located at the central position of the hole-shaped structure formed by the ends of the movable parts 5 of the two movable side plates and the two fixed side plates 2, the second photoelectric limiting sheet 28 mounted on the shunt shell 6 triggers the second photoelectric switch 29, the second photoelectric switch 29 sends out an electric signal and drives the timing device to time, so that the detected flowmeter and the liquid working standard device synchronously work, and the output values of the two are compared in the process. When the measuring time is about to reach the preset measuring time, the driving cylinder 7 drives the shunting shell 6 to translate on the limiting shaft 9, and when an outlet pipe connected to a return pipeline on the shunting shell 6 is positioned below a hole-shaped structure formed by the tail ends of the movable parts 5 of the two movable side plates and the two fixed side plates 2, the driving cylinder 7 stops working, and the product enters a state ready for measurement again. In the process, when the shunt partition 27 in the shunt casing 6 is located at the center of the hole-shaped structure formed by the ends of the movable parts 5 of the two movable side plates and the two fixed side plates 2, the second photoelectric limiting sheet 28 mounted on the shunt casing 6 triggers the second photoelectric switch 29 again, and the second photoelectric switch 29 sends out an electric signal and drives the timing device to finish timing.
And finally, according to the actual measurement time, determining the metering accuracy and repeatability of the detected flowmeter, recording data, and closing the water pump.
Through the embodiment, the technical problems that the water quantity in the nozzle connecting pipe 1 is inconsistent due to different flow rates of the water inlet pipes, the measurement error is large due to the fact that the water flow speed and the flow are uneven at the tail end of the reversing port, the technical problems that the flow speed of the fixed nozzle is too low when the water flow is small, the flow is not full of pipe flow and liquid flow are not symmetrical, and atomization is easy to occur to a medium with too high flow speed to cause inaccurate measurement are fundamentally solved, the uniform and stable flow speed of the nozzle outlet is ensured, the influence on the symmetry of the diverter due to the fact that the flow speed of the nozzle is uneven is reduced, and the accuracy of the diverter is improved.
The invention is a commutator for improving the accuracy of a flow standard device, which meets the needs of workers in the field of commutators, so that the invention has wide market prospect.
Claims (8)
1. A diverter for improving accuracy of a flow calibration device, comprising: including spout connecting pipe (1), the below of spout connecting pipe (1) is equipped with the tubular structure that comprises two fixed curb plate (2) that are parallel to each other and two movable side plate that are parallel to each other, and fixed curb plate (2) outside is provided with support frame (3), movable side plate include fixed part (4) and movable part (5), the top of fixed part (4) and the bottom of movable part (5) are articulated, the below of tubular structure be provided with reposition of redundant personnel casing (6), reposition of redundant personnel casing (6) outside is provided with a drive arrangement.
2. The commutator of claim 1, wherein: the first driving device comprises a driving cylinder (7), an extension rod of the driving cylinder (7) is connected with the outer wall of a shunt shell (6), a sliding bearing mounting ring (8) is arranged on the outer side of the shunt shell (6), a limiting shaft (9) is sleeved in the sliding bearing mounting ring (8), a sliding bearing (10) is arranged between the limiting shaft (9) and the sliding bearing mounting ring (8), two ends of the sliding bearing mounting ring (8) are respectively and fixedly provided with a limiting shaft support frame (11), and the limiting shaft support frame (11) is installed on a support frame (3).
3. The commutator of claim 1, wherein: fixed part (4) and movable part (5) between be provided with first sealing strip (12), the top surface of fixed part (4), sealing strip mounting groove (13) have been seted up on the side of fixed part (4) and movable part (5), sealing strip mounting groove (13) adopt virtual n font groove-shaped structure, be provided with second sealing strip (14) in sealing strip mounting groove (13), the part and fixed curb plate (2) swing joint of second sealing strip (14), first sealing strip (12) and second sealing strip (14) fixed connection, first sealing strip (12) and second sealing strip (14) are equallyd divide and are do not adopted the strip structure of making by the rubber material.
4. The commutator of claim 1, wherein: the support frame (3) on be equipped with step motor (15), be provided with ball (16) on the output of step motor (15), the below of ball (16) is provided with linear guide (17), divide equally between ball (16) and two movable parts (5) and do not be provided with supplementary spacing drive arrangement, supplementary spacing drive arrangement include actuating lever mount pad (18), drive dead lever (19) and drive dwang (20), actuating lever mount pad (18) suit is at linear guide (17) and ball (16), ball (16) and actuating lever mount pad (18) threaded connection, actuating lever mount pad (18) and linear guide (17) swing joint, the one end and the actuating lever mount pad (18) fixed connection of drive dead lever (19), the other end and the drive dwang (20) one end of drive dead lever (19) are articulated, the other end of the driving rotating rod (20) is hinged with the outer side surface of the movable part (5).
5. The commutator of claim 1, wherein: one end of the nozzle connecting pipe (1) is sleeved with a connecting flange (21), the other end of the nozzle connecting pipe (1) is sleeved with a connecting plate (22), and the fixed side plate (2) and the fixed part (4) are fixedly connected with the connecting plate (22) respectively.
6. The commutator of claim 1, wherein: reposition of redundant personnel casing (6) include outlet pipe and inlet tube, be provided with reposition of redundant personnel baffle (27) in the inlet tube, the inlet tube is located the top of outlet pipe, the quantity of outlet pipe adopts two, two the outlet pipe divide equally do not with the inlet tube is linked together, reposition of redundant personnel baffle (27) are located two between the outlet pipe.
7. The commutator of claim 2, wherein: the output of drive actuating cylinder (7) be connected with the one end of reposition of redundant personnel casing (6), the fixed second photoelectricity spacing piece (28) that is provided with on the other end of reposition of redundant personnel casing (6), fixed second photoelectric switch (29) that is provided with on support frame (3) of second photoelectricity spacing piece (28) one side, the quantity of spacing axle (9) adopts two, the both sides at reposition of redundant personnel casing (6) are installed to two spacing axle (9) symmetries, the quantity of slide bearing collar (8) and the quantity of slide bearing (10) are equallyd divide and are do not corresponding with the quantity of spacing axle (9).
8. The commutator of claim 4, wherein: ball (16) on the symmetry be provided with two lead screw supporting seats (23), the below of two lead screw supporting seats (23) is provided with mounting plate (24), linear guide (17) are installed on mounting plate (24), mounting plate (24) are installed on support frame (3), two lead screw supporting seats (23) all correspond and are provided with first photoelectric spacing piece (25), be provided with first photoelectric switch (26) on mounting plate (24), one of them first photoelectric spacing piece (25) are installed between two first photoelectric spacing pieces (25), wherein the outside at two first photoelectric spacing pieces (25) is installed in another first photoelectric spacing piece (25).
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| CN202010330670.5A CN111380599B (en) | 2020-04-24 | 2020-04-24 | Commutator for improving accuracy of flow standard device |
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| CN202010330670.5A CN111380599B (en) | 2020-04-24 | 2020-04-24 | Commutator for improving accuracy of flow standard device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114252135A (en) * | 2021-12-29 | 2022-03-29 | 新乡航空工业(集团)有限公司 | Pneumatic asymmetric reversing mechanism for instrument detection equipment |
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| CN203732138U (en) * | 2013-08-22 | 2014-07-23 | 开封仪表有限公司 | Pneumatic open movable reverser |
| CN108132081A (en) * | 2018-03-09 | 2018-06-08 | 武汉市计量测试检定（研究）所 | A kind of embedded mobile fine liquid flowrate calibrating device |
| CN109579952A (en) * | 2019-01-28 | 2019-04-05 | 中国计量科学研究院 | A kind of commutator nozzle of adjustable opening |
| CN211783766U (en) * | 2020-04-24 | 2020-10-27 | 开封仪表有限公司 | Commutator for improving accuracy of flow standard device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114252135A (en) * | 2021-12-29 | 2022-03-29 | 新乡航空工业(集团)有限公司 | Pneumatic asymmetric reversing mechanism for instrument detection equipment |
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