CN110937301B

CN110937301B - Flowmeter assembly and calibration system

Info

Publication number: CN110937301B
Application number: CN201911157203.0A
Authority: CN
Inventors: 杨劲松; 何炳伟
Original assignee: CHONGQING WECAN PRECISION INSTRUMENTS Co
Current assignee: CHONGQING WECAN PRECISION INSTRUMENTS Co
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2024-02-13
Anticipated expiration: 2039-11-22
Also published as: CN110937301A

Abstract

The invention discloses a flowmeter assembling and calibrating system which comprises an onboard tool lifter, a double-layer conveying line and a packing box bundling machine, wherein the feeding end of the onboard tool lifter is in butt joint with the end point of a production conveying line, the lifting table top of the onboard tool lifter is lifted to be consistent with the production conveying line in height, the lifting table top is lowered to be consistent with the lower conveying line of the double-layer conveying line in height, the output end of the onboard tool lifter is in butt joint with the lower conveying line, and the lower conveying line is connected with a starting point of the production conveying line for feeding boards. The beneficial effects are that: the utility model discloses a realization frock cyclic utilization need not to transport or transport midway, and the manager need not handle the frock, and leaves more efforts to the processing of flowmeter, improves production efficiency, and upper conveying line can be put into the packing box by the manual work with the flowmeter, and it is packed to it by the packing box bundling machine again, just can accomplish the last process of production flowmeter, occupation space is little, practices thrift the cost of land.

Description

Flowmeter assembly and calibration system

Technical Field

The invention relates to the technical field of flow meter processing pipelines, in particular to a flow meter assembling and calibrating system.

Background

The flowmeter is calibrated before leaving the factory under the consideration of metering accuracy, the flowmeter is required to be calibrated to be qualified to leave the factory as a finished product, and because the requirement of calibration is high, the flowmeter is usually independently calibrated by a third-party calibration mechanism or unit, so that the cost is high, but the production of the flowmeter already realizes the assembly line work, a large number of uncalibrated flowmeters can be produced, and the calibration of a large number of flowmeters tends to generate high cost, and a large amount of time and labor are consumed.

Thus, it is possible for the flowmeter manufacturer and seller to complete both production and calibration at a lower cost, creating more production value and reducing the overall cost of the flowmeter. If the production and the calibration can be integrated into the same production line, the production efficiency can be greatly improved.

Disclosure of Invention

Aiming at the defects, the invention provides a flowmeter assembling and calibrating system, which can sequentially complete the assembling production and the metering calibration of a flowmeter, form a closed-loop assembly line from a flowmeter blank to the calibration and finally finish the finished product packaging, and store a to-be-inspected table which cannot be calibrated in time in a to-be-inspected table warehouse when the production capacity is larger than the calibration capacity, thereby avoiding influencing the production efficiency due to untimely calibration, greatly reducing the production and calibration cost of the flowmeter and improving the operation efficiency.

In order to achieve the above purpose, the invention adopts the following specific technical scheme:

the utility model provides a flowmeter assembly and calibration system, includes flowmeter assembly line, flowmeter calibration line, wherein, flowmeter assembly line includes production warehouse entry assembly line, inbound transportation elevator, waits to examine the table storehouse, goes out warehouse transportation elevator, marks and returns the processing line, the end of production warehouse entry assembly line is the assembly line pay-off end, this assembly line pay-off end just to the elevator pan feeding mouth of inbound transportation elevator, inbound transportation elevator is used for receiving the flowmeter of production warehouse entry assembly line and transports to the corresponding flowmeter storage line of waiting to examine, go out warehouse transportation elevator is used for transporting the flowmeter of waiting to examine flowmeter storage line to flowmeter calibration line's feeding transmission line, flowmeter calibration line's ejection of compact transmission line is connected mark returns the processing line.

Through the design, the flowmeter line is primarily processed by the production warehouse-in assembly line, then is sent into the to-be-inspected meter warehouse by the warehouse-in transfer elevator to wait for calibration, and is sent to the flowmeter calibration line by the warehouse-out transfer elevator to complete calibration when the calibration is finished, and finally the calibrated flowmeter enters the calibration return processing line to carry out final processing and finished product packaging, so that a closed-loop assembly line from the flowmeter blank to the calibration and finally finished product packaging is formed, the production and calibration cost of the flowmeter is greatly reduced, and the running efficiency is improved.

Further designed, the flowmeter calibration line comprises a first calibration line, a second calibration line and a third calibration line, wherein the maximum calibration flow of the first calibration line is greater than the maximum calibration flow of the second calibration line is greater than the maximum calibration flow of the third calibration line, and the minimum calibration flow of the first calibration line is greater than the minimum calibration flow of the second calibration line is greater than the minimum calibration flow of the third calibration line. By adopting the technical scheme, the flow ranges which can be calibrated by the three calibration circuits are different, so that the flow meters with different flow rates or types can be calibrated, and the different calibration circuits can be operated simultaneously or independently, so that the calibration efficiency is high and the cost is low.

Further, the flowmeter calibration line is supplied with water by a water supply mechanism, the water supply mechanism comprises a pressure stabilizing water tank, the pressure stabilizing water tank comprises an overflow tank, a constant pressure tank and a water collecting tank, which are sleeved in sequence from inside to outside, and the height of the overflow tank is larger than that of the constant pressure tank;

by adopting the structure, the overflow tank with higher structure can automatically overflow to the constant-pressure tank after being full, the water level in the constant-pressure tank is always level with the tank opening, and redundant water in the constant-pressure tank can overflow to the water collecting tank, so that the water pressure in the constant-pressure tank can be always kept stable, and the water supply pressure is ensured to be stable.

The water supply mechanism further comprises a circulating pool, the circulating pool is positioned at a low position, the pressure stabilizing pool is positioned at a high position, the constant pressure pool is connected with the circulating pool through a tap water pipe, and the water collecting pool is connected with the circulating pool through a water return pipe;

by adopting the structure, when the constant-pressure tank is adopted to supply water and the flow requirement cannot be met, the circulating tank is started to supply water, the circulating tank pumps water into the corresponding pressure stabilizing tank, the pressure stabilizing tank is always kept full of water, and water is further supplied to each calibration line through the pressure stabilizing tank, so that the stability of water pressure of water supply is ensured.

Still further designed, flowmeter calibration line rear end still is equipped with the calibration mechanism that weighs, and this calibration mechanism that weighs includes B1 weighing scale, and B1 is natural number, install the weighing water tank on the weighing scale, wherein one the water outlet end of second flow control pipe and third flow control pipe is connected with one of them weighing water tank, other the water outlet end of second flow control pipe, third flow control pipe and all first flow control pipes is connected with same root eighth collecting pipe, and this eighth collecting pipe is respectively through shunt tubes other weighing water tank connects, install the shunt control valve on the shunt tubes, all weighing water tanks pass through the circulating pipe and are connected with the trench.

By adopting the structure, the water from the calibration pipe can enter the weighing water tank for weighing, the weight of the water flowing into the water tank in a certain time is recorded, the weight is converted into volume, the instantaneous flow (namely the volume flow) in a unit time is further calculated, the flow is compared with the display flow of the standard flowmeter, the standard flowmeter can be calibrated, and the flow can be compared with the display flow of the flowmeter to be detected, so that the flowmeter to be detected is calibrated.

On the other hand, the production and warehousing assembly line comprises a surface air tightness test station, a circuit board installation station and a circuit board plastic packaging station which are sequentially connected with each other through a conveyor belt, wherein the tail end of the production and warehousing assembly line is an assembly line feeding end, and the assembly line feeding end is opposite to an elevator feeding port of the warehouse entry transfer elevator;

the calibration return processing line comprises a gauge head sealing station, a gauge head air tightness testing station, a flowmeter drying station and a flowmeter packaging station which are sequentially connected through a conveyor belt, wherein a plate return conveying line of the flowmeter packaging station is connected with a starting plate supply conveying line of the production and warehousing assembly line.

The air tightness of the original blank of the flowmeter is detected by the meter body air tightness test station, the meter body is complete and enters the circuit board mounting station to mount the detection circuit, then the circuit board is fixedly sealed by the circuit board plastic packaging station, and then the flowmeter can be calibrated;

The calibrated flowmeter enters a gauge outfit sealing station and a gauge outfit air tightness testing station to carry out gauge outfit sealing and air tightness detection so as to prevent the influence of gauge outfit water inflow on the service life of a circuit, and because the air tightness detection is a water flooding test, the flowmeter is also required to be dried by a flowmeter drying station, so that a flowmeter finished product with qualified internal detection is formed, and finally the flowmeter finished product is packaged and can leave a factory.

Further designed, the body air tightness testing station and the gauge outfit air tightness testing station are both provided with an air tightness detecting device, the air tightness detecting device comprises a water tank and a frame which can be driven by a frame lifting control mechanism to lift in the water tank, a body fixing sealing disc and a body driving sealing disc which are vertically and oppositely arranged are arranged on the frame, the body driving sealing disc can be driven by a sealing disc driving device to approach or depart from the body fixing sealing disc, a test air filling hole is formed in the disc surface of the body fixing sealing disc, which is close to one side of the body driving sealing disc, a gauge outfit sealing seat is arranged in the water tank, and the gauge outfit sealing seat can be driven by a sealing seat driving mechanism to translate or lift between the body fixing sealing disc and the body driving sealing disc.

By adopting the structure, the airtight detection device drives the meter body active sealing disc through the sealing disc driving device, the meter body fixed sealing disc and the meter body active sealing disc can reliably clamp and seal the meter body of the flowmeter, the meter head sealing seat is reliably sealed by the meter head sealing seat driving mechanism, and the meter head of the flowmeter can be reliably sealed by the meter head sealing seat, so that the relative positions among the meter body fixed sealing disc, the meter body active sealing disc and the meter head sealing seat can be flexibly controlled, and the airtight of the flowmeter can be accurately detected by adapting to flowmeters of different models and different sizes.

Still further designed, the flowmeter packing station comprises an onboard tool lifter, a double-layer conveying line and a packing box bundling machine, wherein the feeding end of the onboard tool lifter is in butt joint with a conveying belt of a calibration return processing line, the lifting table top lifting height of the onboard tool lifter is consistent with the height of the conveying belt, the lifting table top lowering height of the onboard tool lifter is consistent with the height of a lower-layer conveying line of the double-layer conveying line, the output end of the onboard tool lifter is in butt joint with the lower-layer conveying line, and the lower-layer conveying line is connected with the starting point board supply conveying line;

the bundling area of the packing box bundling machine is positioned on the upper layer conveying line of the double-layer conveying line;

Through the design, the on-board tooling at the end point of the production line is received by the on-board tooling lifter, after the flowmeter on the tooling is placed on the upper layer conveying line by the standby mechanical arm or manually, the on-board tooling is lowered to the lower layer conveying line and finally sent to the starting point plate supply position, so that the cyclic utilization of the tooling is formed, the tooling is not required to be transported or carried in the middle, a manager does not need to process the tooling, and more energy is left for processing the flowmeter, the production efficiency is improved, the upper layer conveying line can be used for placing the flowmeter into a packing box by manually, and the packing box is bundled and packaged by the packing box bundling machine, so that the last procedure of producing the flowmeter can be completed, the occupied space is small, and the cost of land is saved.

The on-board tooling lifter comprises an outer box, wherein a lifting frame which moves up and down is arranged in the outer box;

the outer box is fixedly provided with a vertical lifting mechanism for lifting/lowering the lifting frame, the lower part of the lifting frame is fixedly provided with a horizontal conveying mechanism for receiving the flowmeter transferring tool from the conveyor belt and sending the flowmeter transferring tool to the lower layer conveying line;

through the design, the on-board tooling is conveyed to the lifting frame, at the moment, the flowmeter on the tooling is placed on the upper conveying line by the mechanical arm or manually, the tooling is lowered to the height of the lower conveying line through the vertical lifting mechanism, and then the tooling is conveyed to the lower conveying line by the horizontal conveying mechanism until the tooling returns to the plate supplying position of the production line, the plate returning work can be automatically completed, and the operation of a manager or a worker is not required, so that the time and the labor are saved.

On the other hand, the to-be-detected meter library comprises M layers of storage layers which are distributed up and down, and each storage layer is provided with N to-be-detected meter storage lines which are distributed left and right;

the storage line of the flowmeter to be detected comprises two guide rails which are arranged in parallel along the length direction of the warehouse of the flowmeter to be detected, a roller conveying chain is arranged on the length direction of the guide rails, a motor is arranged at the tail end of the roller conveying chain, and the motor drives the roller conveying chain to move along the length direction of the guide rails through a gear reduction mechanism;

the warehouse-in transfer elevator comprises a warehouse-in elevator body, wherein the feeding end of the assembly line and the to-be-detected meter warehouse are positioned on the same side of the warehouse-in elevator body, a conveying entrance is formed in one side of the warehouse-in elevator body facing the to-be-detected meter warehouse, the warehouse-in elevator body is slidably mounted on the ground through a warehouse-in left-right conveying sliding rail, an up-down conveying mechanism and an in-out conveying mechanism are arranged in the warehouse-in elevator body, the in-out conveying mechanism is used for receiving a flowmeter at the feeding end of the assembly line or sending the flowmeter to the to-be-detected meter warehouse, and the up-down conveying mechanism is used for lifting the in-out conveying mechanism;

the delivery transfer elevator comprises a delivery elevator body, a delivery port is formed in one side, facing the to-be-detected meter warehouse, of the delivery elevator body, a delivery port is formed in one side, facing the discharge transmission line of the flowmeter calibration line, of the delivery elevator body, and the internal structure of the delivery elevator body is consistent with that of the delivery transfer elevator and is slidably mounted on the ground through delivery left and right conveying sliding rails.

The laying direction of left and right conveying slide rails is consistent with the width direction of a meter warehouse to be inspected, so that the elevator body can horizontally move left and right, the position of each meter storage line to be inspected corresponds to the position of each meter storage line to be inspected, the up and down conveying mechanism is a common lifting chain, the lifting chain is fixedly connected with the in and out conveying mechanism and is lifted to work by the in and out conveying mechanism, the in and out conveying mechanism is a roller line driven by a motor, a flowmeter and a tool for bearing the flowmeter horizontally move on the roller line to enter and exit the elevator, the flowmeter can be connected to the elevator body from the assembly line through the above design, and the left and right conveying slide rails are driven to enable the conveying inlet and outlet to be aligned to the positions of the meter storage lines to be inspected.

In a further aspect, the flowmeter is carried by a flowmeter transferring tool in a production and warehousing assembly line, a warehouse entering and transferring elevator, a to-be-inspected meter warehouse, a warehouse exiting and transferring elevator and a calibration and returning processing line, the flowmeter transferring tool comprises a tool bottom plate, two positioning support bars and two carrier rollers, the two positioning support bars are mutually and parallelly fixed on the upper surface of the tool bottom plate, carrier roller placing grooves which are opposite to each other are formed in the two positioning support bars, two ends of each carrier roller are respectively detachably placed in one group of the two opposite carrier roller placing grooves of the two positioning support bars, and the two carrier rollers are mutually and parallelly;

The carrier roller placing groove is arc-shaped, and two ends of the carrier roller are respectively reduced to form a carrier roller annular mounting groove which is matched with the carrier roller placing groove;

the carrier rollers are provided with flowmeter limiting grooves, and each flowmeter limiting groove is arranged between two carrier roller annular mounting grooves in a group.

According to the scheme, the adaptability of the flowmeters of various types on the production line is considered, the flowmeters of different types can be conveyed to the corresponding to-be-detected flowmeter storage line through the warehouse entry transportation elevator, the flowmeters are produced or assembled and then are seamlessly conveyed to the to-be-detected meter warehouse, the assembly line is not required to stop firstly to prevent the accumulation of the tail end flowmeters, and then the flowmeters are conveyed away to continue to work. Therefore, the distance between the two carrier rollers is only required to be adjusted for the flowmeter with different models, so that stable placement of the flowmeter with different sizes is ensured, the corresponding special flowmeter transferring tool is not required to be replaced repeatedly during assembling of different flowmeters, and replacement time is saved. The carrier roller can be reliably positioned, so that the carrier roller is not easy to slide out, and the stable and reliable placement of the flowmeter is ensured. The flowmeter can be positioned more reliably, is suitable for flowmeters of different types, and has good universality.

Compared with the prior art, the invention has the beneficial effects that: the assembly production and the metering calibration of the flowmeter can be completed sequentially, a closed-loop assembly line from the blank of the flowmeter to the calibration and finally finished product packaging is formed, when the production capacity is larger than the calibration capacity, the to-be-detected meter which cannot be calibrated in time can be stored in the to-be-detected meter library, the production efficiency is prevented from being influenced due to untimely calibration, the production and calibration cost of the flowmeter is greatly reduced, and the operation efficiency is improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic illustration of an implementation of a flowmeter calibration line;

FIG. 3 is a schematic structural view of a third calibration tube;

FIG. 4 is a schematic view of the structure of a movable pipe section;

FIG. 5 is a schematic structural view of a flowmeter clamp;

FIG. 6 is a schematic structural view of a flowmeter support plate;

FIG. 7 is a schematic diagram of a regulated water reservoir;

FIG. 8 is a schematic diagram of a noise reduction structure of a water pump;

FIG. 9 is a top view of a body air tightness test station;

FIG. 10 is a schematic diagram showing the fitting relationship of main components of the airtight detecting apparatus;

FIG. 11 is a schematic structural view of a body active sealing disk;

FIG. 12 is a schematic view of a transfer device;

FIG. 13 is a schematic structural view of a flowmeter clamp;

FIG. 14 is a schematic structural view of a flow meter packing station;

FIG. 15 is a top view of the lower conveyor line;

FIG. 16 is a side view of a flow meter packaging station;

FIG. 17 is a top view of an onboard tooling elevator;

FIG. 18 is an enlarged view of a portion of FIG. 17;

FIG. 19 is a front view of the lifting frame in a raised state;

fig. 20 is a left side view of the lifting frame in a lifted state;

fig. 21 is a side view of an in-warehouse transfer elevator, a to-be-inspected meter warehouse, and an out-warehouse transfer elevator;

fig. 22 is a schematic view of the internal structure of the elevator body;

FIG. 23 is a front view of a library of tables to be inspected;

fig. 24 is an enlarged view of the portion P in fig. 23;

FIG. 25 is a schematic view of a flow meter deposit line under test;

FIG. 26 is a top view of a flow meter transfer tool;

FIG. 27 is a front view of a positioning support bar;

fig. 28 is a schematic view of the structure of the first idler embodiment;

fig. 29 is a schematic view of a second idler embodiment.

Detailed Description

The invention is further described below with reference to examples and figures.

The utility model provides a flowmeter assembly and calibration system, is shown in fig. 1, includes flowmeter assembly line 1, flowmeter calibration line 2, wherein, flowmeter assembly line 1 includes production warehouse entry assembly line A, warehouse entry transportation elevator B, wait to examine table storehouse C, warehouse exit transportation elevator F, calibration return processing line G, production warehouse entry assembly line A's end is the assembly line pay-off end, this assembly line pay-off end just to the elevator pan feeding mouth of warehouse entry transportation elevator B, warehouse entry transportation elevator B is used for receiving flowmeter D of production warehouse entry assembly line A and transport to corresponding to wait to examine flowmeter deposit line C1, warehouse exit transportation elevator F is used for transporting to wait to examine flowmeter D on flowmeter deposit line C1 to the feeding transmission line of flowmeter calibration line 2, the ejection of compact transmission line of flowmeter calibration line 2 connects calibration return processing line G.

The flowmeter calibration line 2 is shown in fig. 2, and comprises a first calibration line 21, a second calibration line 22 and a third calibration line 23, wherein the maximum calibration flow of the first calibration line 21 is greater than the maximum calibration flow of the second calibration line 22 is greater than the maximum calibration flow of the third calibration line 23, and the minimum calibration flow of the first calibration line 21 is greater than the minimum calibration flow of the second calibration line 22 is greater than the minimum calibration flow of the third calibration line 23;

the flowmeter calibration line 2 is supplied with water by the water supply mechanism 24, the water supply mechanism 24 comprises a pressure stabilizing water tank 241 and a circulating tank 242, the pressure stabilizing water tank 241 is shown in fig. 7 and comprises an overflow tank 241a, a constant pressure tank 241b and a water collecting tank 241c which are sleeved in sequence from inside to outside, and the height of the overflow tank 241a is greater than that of the constant pressure tank 241 b. The circulating tank 242 is positioned at a low position, the pressure stabilizing water tank 241 is positioned at a high position, the constant pressure tank 241b is connected with the circulating tank 242 through a tap water pipe 2412, and the water collecting tank 241c is connected with the circulating tank 242 through a water return pipe 246;

the circulation tank 242 is connected with L0 third water supply pipes 244, and the third water supply pipes 244 are provided with a water pump 243 and a second water supply valve 2415, so that the third water supply pipes 244 are divided into three parts, wherein one part is L1 third water supply pipes 244, the second part is L2 third water supply pipes 244, and the third part is L3 third water supply pipes 244, and l1+l2+l3=l0. K third water supply pipes 244 are connected with water supply pipes 248, K is smaller than L0, the water inlet ends of the water supply pipes 248 are connected with the third water supply pipes 244 at the rear ends of the corresponding water pumps 243, the water outlet ends of the water supply pipes 248 are connected with the overflow tanks 241a, and water supply control valves 249 are arranged on the water supply pipes 248;

The first calibration circuit 21 includes M1 first standard pipes 212 connected in parallel, where the water outlet ends of the L1 third water supply pipes 244 are connected to a first surge tank 211, M1 water inlet ends of the first standard pipes 212 are connected to the first surge tank 211, the first standard pipes 212 are provided with a first standard flowmeter 214 and a first standard pipe valve 213, M1 water outlet ends of the first standard pipes 212 are connected to the same first collecting pipe 215, the first collecting pipe 215 is connected to F1 first calibration pipes 216, the first calibration pipes 216 are provided with a first calibration control valve 2110 and connected in series to N1 first to-be-detected flowmeters 217, the water outlet ends of the F1 first calibration pipes 216 are connected to the same first flow rate adjusting mechanism, the inner diameters of the M1 first standard pipes 212 may be the same or different, in this embodiment, l1=5, m1=7, f1=2, 7 first standard pipes 212 have different inner diameters 403, and first standard flow meters 403 are also provided with different inner diameters, and the first standard pipes 406 are used for the same type of the two calibration pipes 406.

The second calibration circuit 22 includes M2 second standard pipes 224 connected in parallel, the water inlet ends of the M2 second standard pipes 224 are connected with a fourth collecting pipe 222, the constant-pressure tank 241b is connected with the fourth collecting pipe 222 through a first water supply pipe 2414, the water outlet ends of the L2 third water supply pipes 244 are connected with a second surge tank 221, the fourth collecting pipe 222 is connected with the second surge tank 221 through a first transition pipe, a third water supply valve 220 is arranged on the first transition pipe, and the first water supply pipe 2414 is connected with the first transition pipe behind the third water supply valve 220;

The second standard tube 224 is provided with a second standard flow meter 225 and a second standard tube valve 223, the water outlet ends of the M2 second standard tubes 224 are connected with the same second collecting tube 226, the second collecting tube 226 is connected with F2 second calibration tubes 2210, the second calibration tubes 2210 are provided with second calibration control valves 227 and are connected with N2 second to-be-detected flow meters 229 in series, the water outlet ends of the F2 second calibration tubes 2210 are connected with the same second flow rate regulating mechanism, the inner diameters of the M2 second standard tubes 224 can be the same or different, the embodiment comprises l2=2, m2=4, f2=4, the inner diameters of the 4 first standard tubes 212 are different, the measuring ranges of the second standard flow meters 225 arranged on the second collecting tube 226 are different, and the inner diameters of the 4 first calibration tubes 216 are also different, so that the first calibration tubes 216 can be used for different types of flow meters;

the third calibration circuit 23 includes M3 third standard pipes 231 connected in parallel, the water inlet ends of the M3 third standard pipes 231 are connected with a fifth collecting pipe 237, the constant-pressure tank 241b is connected with the fifth collecting pipe 237 through a second water supply pipe 2410, and the first water supply pipe 2414 and the second water supply pipe 2410 are respectively provided with a first water supply valve 2411; the water outlet end of the L3 third water supply pipes 244 is connected to a third surge tank 245, the fifth collecting pipe 237 is connected to the third surge tank 245 through a second transition pipe, a fourth water supply valve 2413 is arranged on the second transition pipe, and the second water supply pipe 2410 is connected to the second transition pipe behind the fourth water supply valve 2413; the third standard pipe 231 is provided with a third standard flowmeter 233 and a third standard pipe valve 232, the water outlet ends of the M3 third standard pipes 231 are connected with a third collecting pipe 2311, the third collecting pipe 2311 is connected with an F3 third calibration pipe 234, the third calibration pipe 234 is provided with a third calibration control valve 236 and is connected with N3 third to-be-detected flowmeters 235 in series, the water outlet ends of the F3 third calibration pipes 234 are connected with the same third flow rate regulating mechanism, the inner diameters of the M3 third standard pipes 231 can be the same or different, the embodiment comprises l3=1, m3=5, f3=4, and 5 first standard pipes 231 with different inner diameters, the measuring ranges of the third standard flowmeters 233 installed on the third standard pipes are the same, and the inner diameters of the 4 third calibration pipes 234 are different, so that the third standard pipes can be used for different types of flowmeters;

The first collecting pipe 215 is connected with the second collecting pipe 226 through a third transition pipe, the second collecting pipe 226 is connected with the third collecting pipe 231 through a fourth transition pipe, the third transition pipe and the fourth transition pipe are respectively provided with a first overflow control valve, the fourth collecting pipe 222 is connected with the second water supply pipe 2410 through a fifth transition pipe, the fifth transition pipe is provided with a second overflow control valve, and if necessary, the first overflow control valve or the second overflow control valve 2410 can supply water to the flowmeter to be detected of the first calibration line through a part of the second calibration line or a part of the third calibration line.

The water pump 243 shown in fig. 8 supplies water for the circulating pool, the water pump 243 is mounted on the corresponding mounting surface 261 through a noise reduction structure, the noise reduction structure comprises noise reduction cushions 263, two rows of three noise reduction cushions 263 are arranged on the mounting surface 261, mounting seats 261 are commonly supported on all the noise reduction cushions 263, the noise reduction cushions 263 support the mounting seats 261 in a wavy shape, and the water pump 243 is mounted on the mounting seats 261.

The water inlet end and the water outlet end of the water pump 243 are respectively communicated with corresponding pipelines through a noise reduction hose 264, the noise reduction hose 2414 comprises straight pipe portions 264a at two ends and a spherical pipe portion 264b in the middle, the spherical pipe portion 264b is in butt joint communication with the straight pipe portions 264a at two ends, the inner diameter of the spherical pipe portion 264b is larger than that of the straight pipe portion 264a, the two straight pipe portions 264a are respectively connected with the corresponding water pump and water pipes, and the noise reduction hose 264 and the noise reduction cushion 263 are made of rubber.

The first calibration tube 216, the second calibration tube 2210, and the third calibration tube 234 have the same structure, as shown in fig. 3-6: the third calibration pipe 234 includes a pipe base 234d, and a fixed pipe section 234a, a movable pipe section 234b, and an adjustable pipe section 234c sequentially disposed on the pipe base 234d in the water flow direction;

the water inlet end of the fixed pipe section 234a is connected to the third collecting pipe 2311;

the movable pipe section 234b comprises A1 movable pipe 234b1 movably mounted on the pipe base 234d through a pipe supporting piece 234e, all the movable pipe 234b1 are arranged along the same straight line, the movable pipe 234b1 can move along the axial direction of the movable pipe, a flowmeter clamp 234f is slidably mounted on the pipe base 234d between adjacent movable pipe 234b1, the third flowmeter to be detected 235 is detachably mounted on the flowmeter clamp 234f, the water inlet end and the water outlet end of the third flowmeter to be detected 235 are respectively opposite to the movable pipe 234b1 at the two ends of the movable pipe 234b, the movable pipe 234b1 is connected with a propping mechanism 234h, and the propping mechanism 234h is used for propping the corresponding movable pipe 234b1 forwards, so that the water outlet end of the fixed pipe section a at the front end of the first movable pipe 234b1 is in butt joint with the water inlet end and the water outlet end of the third flowmeter to be detected 235 are respectively in butt joint with the corresponding movable pipe 234b 1;

The adjustable pipe segment 234c is connected to the movable pipe 234b1 at the A1 st root.

The fixed pipe section 234a includes a fixed pipe 234a1, the fixed pipe 234a1 is fixedly installed on the pipe base 234d, the water inlet end of the fixed pipe 234a1 is connected with the third collecting pipe 2311, the water outlet end of the fixed pipe 234a1 is in butt joint with the 1 st movable pipe 234a1, the adjustable pipe section 234c includes an adjustable pipe 234c1 fixedly installed on the pipe base 234d, the front end of the adjustable pipe 234c1 is fixedly connected with the A st movable pipe 234b1, the rear end of the adjustable pipe 234c1 is connected with a telescopic device 234c2, and the fixed pipe 234a1 and the adjustable pipe 234c1 are respectively connected with a pressure transmitter 234k and a temperature sensor 234g.

The flowmeter clamp 234f comprises a clamp bottom plate 234f1, a slide rail 234j is arranged on the pipeline base 234d, the clamp bottom plate 234f1 is fixedly installed on a sliding block of the slide rail 234j, two flowmeter supporting plates 234f2 are arranged on the clamp bottom plate 234f1 in a positive mode, semicircular installation grooves 234f3 are formed in the upper portion of the flowmeter supporting plates 234f2, the inner diameter of each installation groove 234f3 is equal to the outer diameter of a flow tube 235a1 of the third flowmeter to be detected 235, two ends of the flow tube 235a1 of the third flowmeter to be detected are respectively located in the two installation grooves 234f3, and connecting flanges 235a2 at two ends of the flow tube 235a1 are respectively located on the outer sides of the corresponding flowmeter supporting plates 234f2 and are abutted to the corresponding flowmeter supporting plates 234f 2.

The tightening mechanism 234h includes a tightening plate 234h1 and a tightening cylinder 234h2, where the tightening plate 234h1 is fixedly connected with the movable pipe 234b1, in this embodiment, the tightening plate 234h1 is in a strip shape, the middle of the tightening plate 234h1 is fixedly sleeved on the movable pipe 234b1, two sides of the movable pipe 234b1 are respectively provided with a tightening cylinder 234h2, the tightening cylinder 234h2 is fixedly installed on the pipe base 234d along the axial direction of the movable pipe 234b1, piston rods of the two tightening cylinders 234h2 are respectively fixedly connected with two ends of the tightening plate 234h1, and a reinforcing plate 234h3 is connected between the movable pipe 234b1 and the tightening plate 234h 1.

The pipe support 234e includes at least one pipe support seat 234e1 fixedly mounted on the pipe base 234d, in this embodiment, the pipe support 234e includes two pipe support seats 234e1, a sliding bearing is mounted on the pipe support seat 234e1, and the movable pipe 234b1 is movably inserted into the sliding bearing.

The tail ends of the first calibration pipe 216, the second calibration pipe 2210 and the third calibration pipe 234 are respectively connected with a trench 251 through pressure relief pipes, the trench 251 is connected with the circulating tank 242, and the pressure relief pipes are provided with pressure relief control valves 258;

As shown in fig. 2, the first flow adjusting mechanism includes P1 first flow adjusting pipes 219 connected in parallel, the water outlet ends of all the first calibration pipes 216 are connected with a sixth collecting pipe 218, and the water inlet ends of the first flow adjusting pipes 219 are connected with the sixth collecting pipe 218;

the second flow adjusting mechanism comprises P2 second flow adjusting pipes 2211 connected in parallel, the water outlet ends of all the second calibration pipes 2210 are connected with a seventh collecting pipe 2212, and the water inlet ends of the second flow adjusting pipes 2211 are connected with the seventh collecting pipe 2212;

the third flow adjusting mechanism comprises P3 third flow adjusting pipes 239 connected in parallel, the water outlet ends of all the third calibration pipes 234 are connected with an eighth collecting pipe 238, and the water inlet ends of the third flow adjusting pipes 239 are connected with the eighth collecting pipe 238;

the first flow adjusting tube 219, the second flow adjusting tube 2211 and the third flow adjusting tube 239 are respectively provided with a flow adjusting valve 2310, in this embodiment, p1=8, p2=5, p3=4, and the inner diameters of the first flow adjusting tube 219, the second flow adjusting tube 2211 and the third flow adjusting tube 239 are different;

the rear end of the flowmeter calibration line 2 is further provided with a weighing calibration mechanism 25, the weighing calibration mechanism 25 comprises B1 weighing scales, B1 is preferably 4, weighing water tanks 255 are mounted on the weighing scales, the water outlet ends of the second flow rate adjusting pipe 2211 and the third flow rate adjusting pipe 239 are connected with one weighing water tank 255, the water outlet ends of the other second flow rate adjusting pipes 2211, the third flow rate adjusting pipes and all the first flow rate adjusting pipes 219 are connected with the same eighth collecting pipe 238, the eighth collecting pipe 238 is respectively connected with the weighing water tanks 255 through a shunt pipe 253, the shunt control valve 254 is mounted on the shunt pipe 253, all the weighing water tanks 255 are connected with a trench 251 through a circulation pipe 256, the measuring range ranges of the 4 weighing scales are identical, and the water outlet ends of the second flow rate adjusting pipe 1 and the third flow rate adjusting pipes 239 with the smallest inner diameters are connected with the weighing water tanks 255 on the weighing scales with the smallest measuring ranges.

In the specific calibration, the first calibration line, the second calibration line and the third calibration line can be opened independently to calibrate, and at most, two calibration lines can be opened simultaneously to calibrate, and each calibration line can only open one calibration pipe no matter which calibration line, so that different calibration methods are generated based on the two calibration lines.

The calibration method based on the calibration mechanism is carried out according to the following steps when only any one of the first calibration line, the second calibration line or the third calibration line is opened and only one corresponding calibration line is opened:

because only one line is calibrated at a time, all relevant devices are selected and corresponding devices are selected, and for convenience of description, the first standard tube 212, the second standard tube 224 and the third standard tube 231 are collectively referred to herein as standard tubes, the first calibration tube 216, the second calibration tube 2210 and the third calibration tube 234 are collectively referred to herein as calibration tubes, and the first flowmeter 217, the second flowmeter 229 and the third flowmeter 235 are collectively referred to herein as to-be-detected flowmeters.

S1, setting a calibration circuit: selecting any one of the calibration pipes as a line to be calibrated, opening a control valve on the selected calibration pipe to enable the control valve to be in a passage state, closing other calibration pipes, and marking the flow meter to be detected as Q, wherein the flow meter to be detected has i flow rates to be calibrated _i ,i＝1,2,3…n ₁ Selecting any one Q _i Calibrating, generally having 4 to-be-detected flow rates, Q respectively ₁ Minimum flow, Q ₂ Demarcation flow, Q ₃ Flow rate, Q of common use ₄ Overload flow, all flow units are m ³ /h；

S2, selecting a water supply mode: counting the maximum water feeding flow Q of K third water supply pipes connected with water feeding pipes _KP

Wherein Q is _pupm,p -a pump flow rate of the water pump;

if Q _KP ≥Q _i Then the corresponding water supply control valve is opened to pass through K ₁ A third water supply pipe is used for supplying water to the overflow pool through a water supply pipe, and further water is supplied to the calibration pipe through the corresponding water supply pipe (when the first calibration line is set, the first calibration pipe can be supplied with water through the first water supply pipe or the second water supply pipe through part of the second calibration line or the third calibration line, when the second calibration line is set, the second calibration pipe is supplied with water through the first water supply pipe, and when the third calibration line is set, the third calibration pipe is supplied with water through the second water supply pipe), K ₁ K is less than or equal to K, and

otherwise, closing the water supply control valve and opening C ₁ A third water supply pipe corresponding to the selected calibration line and used for calibrating the set through the corresponding surge tankLine water supply, C ₁ The following conditions are satisfied:

s3, setting standard tube number: setting P ₁ Standard tube to make it in channel state corresponding to P ₁ A standard flowmeter is selected, P ₁ The following conditions are satisfied:

wherein Q is _min,x -a minimum range of a standard flowmeter; q (Q) _max,x -maximum range of standard flow meter;

s4, setting a flow regulating pipe: opening corresponding flow regulating valves, regulating the opening degree of each flow regulating valve, and regulating the display flow Q of each selected standard flowmeter _bz,t Which satisfies the following conditions:

s5, calibrating: recording the display flow Q of each flowmeter to be detected on the selected calibration tube _cd,j J is the label of the flowmeter to be detected on the line, and Q of each flowmeter to be detected is respectively calculated _cd,j And (3) withComparing, if the difference value of the two meets the calibration requirement, the calibration is ended, otherwise the difference value is +.>Writing a corresponding flowmeter to be detected;

s6 selecting other Q _i Calibrating, repeating the steps S2-S5 until all Q _i The calibration is completed;

s7, pressure relief: after the calibration is finished, the water pump is closed, and the pressure relief valve is opened;

s8: and selecting and setting a new calibration line, and repeating the steps S1-S7 until the calibration of the flow meters to be detected on all the calibration pipes is finished.

The standard flowmeter needs to be calibrated every T days, and the calibration mode is basically the same as the step of calibrating the flowmeter to be detected, and specifically comprises the following steps:

s1, setting a calibration pipeline: opening the standard tube control valve on the standard tube to make it in the channel state, closing other standard tubes, and making the standard flowmeter to be calibrated have j flow rates to be calibrated, and making it be Q _j ,j＝1,2,3…n ₂ Selecting any one Q _j Calibrating

S2, selecting a water supply mode: counting the maximum water supply flow Q of K first water supply pipes (104) connected with the water supply pipe 108 _KP

Wherein Q is _pupm,p -a pump flow rate of the water pump;

if Q _KP ≥Q _j Then the corresponding water supply control valve is opened to pass through K ₁ The third water supply pipe supplies water to the overflow pool through the water supply pipe, and further supplies water to the standard pipe through the corresponding water supply pipe, K ₁ Satisfy the following requirements

Otherwise, closing the water supply control valve and opening C ₁ A third water supply pipe corresponding to the selected calibration line and supplying water to the set calibration line through a corresponding surge tank, C ₁ The following conditions are satisfied:

s3, setting a flow regulating pipe: the fluid flows out from the selected standard tube and enters the flow regulating mechanism through any one or a plurality of calibration tubes, the corresponding flow regulating valve is opened,controlling the opening degree of each flow regulating valve, and regulating the display flow of the standard flowmeter to be calibrated to be Q _xs Let Q _xs ＝Q _j ；

S4, weighing: the maximum measuring range of each weighing scale is marked as G _i ，i＝1,2,3…n ₃ The mass m of the fluid flowing through the standard tube within t minutes is calculated,

m＝ρQ _j ×t÷60

wherein ρ -fluid density, kg/m ³ ；

M is combined with each G _i Comparing G _i The weighing scale corresponding to the smallest positive number obtained by m is selected as the weighing scale of the weighing calibration, a shunt control valve of the corresponding weighing scale is opened, a flow regulating pipe is communicated with a corresponding weighing water tank, and the actual mass m of fluid flowing into the corresponding weighing water tank within t minutes is recorded ₀ And calculates the actual flow rate Q flowing through the standard flowmeter ₀ Calculated according to the following formula:

Q ₀ ＝km ₀ ÷(ρ×t)

where k is a calibration constant, related to the temperature of the fluid. The flowmeter to be detected is used for measuring water flow, k is the relation between water temperature and density, for example, k=0.9998 at 0 ℃; at 20 ℃, k=0.9980; at 25 ℃, k= 0.9968, the relationship between the water temperature and the density is the prior art, and is not described here again;

s5, comparison: will be the actual flow Q ₀ Comparing the flow with the flow displayed by the standard flowmeter to be calibrated, if the difference value of the flow and the flow accords with the metering rule, ending the calibration, otherwise, judging the actual flow Q ₀ The corresponding standard flow meter 203 is written.

Other Q of standard flow meter _j The calibration method and the calibration of other standard flowmeters are the same as those described above, and are not repeated here.

In addition, the weighing calibration mechanism can be used for calibrating the flowmeter to be detected, the calibration mode is basically the same as that of the standard meter method, except that the fluid finally flows into the weighing water tank, the actual flow is calculated through weighing (the method is shown in calibrated S4 and S5), and the actual flow is compared with the display flow Q of the flowmeter to be detected _cd,j Can be compared with each other。

Or a calibration method based on a calibration mechanism, when any two of the first calibration line, the second calibration line or the third calibration line are opened, and only one calibration line in the corresponding line is opened, the calibration method is basically the same as the former calibration method, and the difference is that the water supply mode is in the step S2:

And comparing the flow of the two groups of lines to be calibrated, wherein the smaller line is supplied with water through the constant-pressure tank via the first water supply pipe or the second water supply pipe, and the larger line is supplied with water through the circulating tank via the corresponding surge tank.

The calibration structure is provided with a plurality of sets of calibration lines, different calibration lines can be independently or simultaneously opened, the calibration flow ranges on the different calibration lines are different, thus the calibration of the flow meters with different types can be realized, a plurality of flow meters to be detected can be connected in series on one calibration line, when any one calibration pipe is independently opened on the same calibration line, the flow meters to be detected can be calibrated at one time, the different calibration pipes are respectively opened, the different flow meters can be calibrated, thereby realizing the flow calibration of the assembly line type, greatly saving the calibration time, reducing the calibration cost, and the system can also calibrate the standard flow meter or the flow meter to be detected by a weighing method, can arbitrarily select different calibration methods according to the needs, and has accurate and reliable calibration results.

The production and warehousing assembly line A shown in fig. 1 comprises a body air tightness test station A1, a circuit board mounting station A2 and a circuit board plastic packaging station A3 which are sequentially connected with one another through a conveyor belt, wherein the tail end of the production and warehousing assembly line A is an assembly line feeding end, and the assembly line feeding end is opposite to an elevator feeding port of the warehouse entering and transferring elevator B;

The calibration return processing line G comprises a gauge outfit sealing station G1, a gauge outfit air tightness testing station G2, a flow meter drying station G3 and a flow meter packaging station G4 which are sequentially connected through a conveyor belt, wherein a plate return conveying line of the flow meter packaging station G4 is connected with a starting plate supply conveying line A0 of the production and warehousing assembly line A.

Because the circuit board mounting station and the circuit board plastic packaging station are basically operated manually, the invention can adapt to different types of flowmeters, and the air tightness detection and the flowmeter transmission need to have structures which can adapt to various types of flowmeters, so that the invention can simultaneously produce and store the various types of flowmeters, and the production efficiency is improved.

The body air tightness testing station A1 and the gauge outfit air tightness testing station G2 are both provided with an air tightness detecting device A11, as shown in fig. 9 and 10, the air tightness detecting device A11 comprises a water tank A11h and a stand A11a capable of lifting in the water tank A11h under the drive of a stand lifting control mechanism A11G, the stand A11a is provided with a vertically opposite arranged body fixing sealing disc A11b and a body driving sealing disc A11c, the body driving sealing disc A11c can be close to or far from the body fixing sealing disc A11b under the drive of a sealing disc driving device A11d, a test air filling hole A11b1 is arranged on the surface of the body fixing sealing disc A11b, which is close to one side of the body driving sealing disc A11c, a gauge outfit sealing seat A11e is arranged in the water tank A11h, and the gauge outfit sealing seat A11e can be horizontally moved or lifted between the body fixing sealing disc A11b and the body driving sealing disc A11c under the drive of a sealing seat driving mechanism A11 f;

The water tank a11h has a box structure with an upper opening, and water is stored in the water tank a11h when in use. The frame A11a is of a rectangular frame structure, and the frame A11a is arranged in the water tank A11h through the frame lifting control mechanism A11g, so that the frame A11a can be lifted under the drive of the frame lifting control mechanism A11 g. Specifically, the two ends of the frame a11a are respectively provided with a lifting support a11A1, the frame lifting control mechanism a11g is two lifting hydraulic cylinders which are respectively installed at the bottom of the water tank a11h, and piston rods of the two lifting hydraulic cylinders respectively penetrate through the frame a11a upwards and are fixedly connected with the corresponding lifting supports a11 A1.

The meter body fixed sealing disc A11b and the meter body fixed sealing disc A11b are vertically and oppositely arranged, wherein the meter body fixed sealing disc A11b is vertically and fixedly arranged on the frame A11a, and the meter body active sealing disc A11c can be driven by the sealing disc driving device A11D to be close to or far away from the meter body fixed sealing disc A11b so as to clamp or release the flowmeter D.

The sealing disc driving device A11D comprises a sealing disc mounting frame A11D1 arranged on the frame A11a, a sealing disc hydraulic cylinder A11D2 arranged on the hydraulic cylinder mounting frame A11D1 and a sealing disc mounting seat A11D3 arranged at the outer end of a piston rod of the sealing disc hydraulic cylinder A11D2, and the meter active sealing disc A11c is arranged on one side, far away from the sealing disc hydraulic cylinder A11D2, of the sealing disc mounting seat A11D3, and can enable the meter active sealing disc A11c to be close to or far away from the meter fixed sealing disc A11b through the control of the sealing disc hydraulic cylinder A11D2 so as to clamp or release the flowmeter D.

Still further, all have 4 concentric ring seal grooves that set up and radius increases gradually on the side quotation that table body fixed seal dish and table body initiative sealing disk are close to each other, ring seal groove's tank bottom all is provided with rubber seal pad, the test is filled the centre of a circle position that the pore is located adjacent ring seal groove.

By adopting the structure, different annular sealing grooves correspond to different types and sizes of flowmeters, the body of the flowmeter can be sealed better through the design of the annular sealing grooves and the rubber sealing gaskets, and the accuracy of the air tightness detection of the flowmeter is improved.

The surface of one side of the fixed sealing disk A11b and the surface active sealing disk A11c, which are close to each other, are respectively provided with 4 annular sealing grooves A1A1 which are concentrically arranged and gradually increase in radius, as shown in FIG. 11, the bottoms of the annular sealing grooves A1A1 are respectively provided with a rubber sealing pad A1a2, and the test air charging holes A11b1 are positioned at the center positions of the adjacent annular sealing grooves A1 A1;

the meter body of the flowmeter D is sealed more reliably, the accuracy of the air tightness detection of the flowmeter D is further improved, and rubber sealing gaskets A1a2 are arranged at the bottoms of the annular sealing grooves A1 A1.

The gauge outfit sealing seat A11e can translate or lift between the gauge outfit fixed sealing disk A11b and the gauge outfit active sealing disk A11c under the drive of the sealing seat driving mechanism A11 f. Specifically, the seal seat driving mechanism a11f includes a sliding rail a11f1 installed in the water tank a11h along a horizontal direction, a gantry a11f2 capable of sliding along the sliding rail a11f1, a mounting frame hydraulic cylinder a11f3 for driving the gantry a11f2 to slide, and a seal seat hydraulic cylinder a11f4 vertically installed at the top of the gantry a11f2, wherein a piston rod of the seal seat hydraulic cylinder a11f4 passes through the gantry a11f2 downwards and then is connected with the gauge head seal seat a11e. Through the design, the position of the gauge outfit sealing seat A11e can be accurately adjusted so as to be suitable for flowmeters D with different models and different structures.

Further, the two sliding rails a11f1 are arranged on two sides of the frame a11a in parallel, the portal frame a11f2 is of a portal structure, the inner sides of two side plates of the portal frame a11f2 are respectively supported on the corresponding sliding rails a11f1 through the pulleys a11f5, and the structure is high in strength, stable and reliable.

After the meter body active sealing disc A11c, the sealing disc driving device A11D and the meter head sealing seat A11e reliably seal the meter body and the meter head of the flowmeter D, the frame A11a and the equipment above can be driven to integrally lift by controlling the two lifting hydraulic cylinders. When the air tightness of the flowmeter D needs to be tested, the flowmeter D is immersed below the water surface of the water tank A11h, the body of the flowmeter D is inflated through the test inflation hole A11b1, no new air bubbles are added in the water of the water tank A11h, the air tightness of the flowmeter D is qualified, and otherwise, reworking maintenance or scrapping is performed. After the air tightness of the flowmeter D is detected, the flowmeter D is enabled to float out of the water surface, and the transferring device A12 is waited to grab the flowmeter D to retrieve the conveyor belt, and the next procedure is carried out.

A transfer device a12 for transferring the flowmeter D between the conveyor and the air-tightness detecting device a11 is provided beside the conveyor, and the transfer device a12 includes a rotatable cantilever mount a12a, a cantilever a12b mounted on the cantilever mount a12a so as to be capable of swinging up and down, a cantilever driving device a12c for driving the cantilever a12b to swing, and a flowmeter clamp a12e mounted at one end of the cantilever a12b through a horizontal position adjusting mechanism a12D, as shown in fig. 12.

Further, the end of the cantilever a12b away from the horizontal position adjusting mechanism a12d is provided with a weight a12f to facilitate the swinging of the cantilever a12 b.

The flowmeter clamp A12e is shown in fig. 13, and comprises a clamp installation top plate A12e1 and side baffle plates A12e2 vertically arranged at two ends of the clamp installation top plate A12e1, wherein the clamp installation top plate A12e1 and the two side baffle plates A12e2 are surrounded to form a door-shaped structure, the clamp installation top plate A12e1 is provided with a double-head cylinder A12e3, two piston rods of the double-head cylinder A12e3 are connected with an intermediate connecting plate A12e5 after penetrating out of the corresponding side baffle plates A12e2 respectively, limiting pins A12e4 are arranged on each intermediate connecting plate A12e5, and the two limiting pins A12e4 are opposite to each other and are respectively and slidably penetrated on the corresponding side baffle plates A12e 2. The middle connecting plate A12e5 comprises a first connecting plate A12e51 and a second connecting plate A12e52, one end of the first connecting plate A12e51 is hinged to one end of the second connecting plate A12e52, one end of the first connecting plate A12e51, far away from the second connecting plate A12e52, is connected with a piston rod corresponding to the double-head cylinder A12e3, and one end of the second connecting plate A12e52, far away from the first connecting plate A12e51, is connected with the limiting pin A12e4. The split design of the intermediate connecting plate A12e5 is convenient for assembly and adjustment.

Further, a limiting block a12e6 is disposed on one side of each side baffle a12e2 close to the adjacent intermediate connecting plate a12e5, so that the maximum insertion depth of the limiting pin a12e4 can be limited, and the meter head of the flowmeter D is prevented from being damaged.

The cantilever mounting seat A12a comprises a bottom plate A12A1, a supporting column A12a2 vertically arranged on the bottom plate A12A1 and a rotating column A12a3 rotatably arranged at the upper end of the supporting column A12a2, a hydraulic cylinder support A12a4 is arranged on the rotating column A12a3, the cantilever driving device A12c is a hydraulic cylinder, a hydraulic cylinder body of the cantilever driving device A12c is hinged with the hydraulic cylinder support A12a4, and a hydraulic cylinder piston rod is hinged with the cantilever A12 b.

The horizontal position adjusting mechanism A12d comprises a connecting seat A12d1 arranged at one end of a cantilever A12b, a rotating arm A12d2 transversely arranged, a fixed column A12d3 vertically arranged at one end of the rotating arm A12d2 far away from the cantilever A12b, a rotating column A12d4 rotatably arranged at the lower end of the fixed column A12d3 and a handrail frame A12d5 arranged on the rotating column A12d4, one end of the cantilever A12b far away from the fixed column A12d3 is rotatably arranged on the connecting seat A12d1, and the flowmeter clamp A12e is arranged at the lower end of the rotating column A12d 4.

The cantilever a12b can be swung up and down by the cantilever driving device a12c, and the heights of the horizontal position adjusting mechanism a12d and the flowmeter clamp a12e are adjusted. Through the running fit of the rotating upright post A12a3 and the supporting upright post A12a2, the running fit of the rotating arm A12D2 and the connecting seat A12D1 and the running fit of the rotating column A12D4 and the fixed column A12D3, the multipoint running fit structure can enable operators to flexibly and easily adjust the position of the flowmeter clamp A12e on the horizontal plane through operating the armrest frame A12D5 so as to accurately align the flowmeter D, thereby greatly reducing the operation difficulty of workers and improving the efficiency.

The flow meter packaging station G4 is shown in fig. 14, and comprises an onboard tool lifter G41, a double-layer conveying line G42 and a packing box bundling machine G43, wherein the feeding end of the onboard tool lifter G41 is in butt joint with a conveying belt of a calibration return processing line G, the lifting table top lifting height of the onboard tool lifter G41 is consistent with the height of the conveying belt, the lifting table top descending height is consistent with the height of a lower conveying line G422 of the double-layer conveying line G42, the output end of the onboard tool lifter G41 is in butt joint with the lower conveying line G422, and the lower conveying line G422 is connected with the starting point board supply conveying line A0;

The bundling area of the packing box bundling machine G43 is located on the upper layer conveying line G421 of the double layer conveying line G42, and the existing bundling machine is selected, and the bundling mechanism is only fixed above one section of the upper layer conveying line 21, so that after the flowmeter packing box faces the bundling mechanism, bundling can be completed.

17-20, the on-board tooling lifter G41 comprises an outer box G413, wherein a lifting frame G414 which moves up and down is arranged in the outer box G413;

a vertical lifting mechanism G411 is fixedly arranged in the outer box G413 and is used for lifting/lowering the lifting frame G414, a horizontal conveying mechanism G412 is fixed at the lower part of the lifting frame G414 and is used for receiving the flowmeter transferring tool E from the conveyor belt and sending the flowmeter transferring tool E to the lower layer conveying line G422;

the front side and the rear side of the lifting frame G414 are respectively in butt joint with the calibration return processing line G and the double-layer conveying line G42, two parallel roller mounting seats G4141 with the same height are arranged on the left side and the right side of the upper portion of the lifting frame G414, N rollers G4142 are horizontally arranged between the two roller mounting seats G4141, and the upper end faces of the N rollers G4142 form the lifting table top.

The horizontal transport mechanism G412 comprises a conveying motor G4121, the conveying motor G4121 is fixed on a bottom plate of the lifting frame G414, a motor shaft of the conveying motor G4121 is parallel to the roller G4142, rotating teeth are sleeved on the motor shaft, roller rotating teeth are correspondingly arranged on one side of the roller G4142, and a transmission chain is sleeved on the roller rotating teeth of the roller G4142 and the rotating teeth of the conveying motor G4121, wherein m is more than or equal to 1 and less than or equal to N.

The vertical lifting mechanism G411 comprises a power telescopic cylinder G4111, a cylinder body of the power telescopic cylinder G4111 is vertically fixed at the bottom of the outer box G413, a piston rod of the power telescopic cylinder G4111 is vertically upwards, a pulley mounting frame G4112 is assembled at the top of the piston rod, a telescopic pulley G4113 is mounted on the pulley mounting frame G4112, a traction rope is wound on the telescopic pulley G4113, one end of the traction rope is fixed at the bottom of the outer box G413, and the other end of the traction rope is connected with the lifting frame G414.

Two lifting support bars G4143 extend out from one side, close to the power telescopic cylinder G4111, of the bottom of the lifting frame G414, the two lifting support bars G4143 are respectively close to the front side inner wall and the rear side inner wall of the outer box G413, roller mounting plates G4144 are respectively erected on the two lifting support bars G4143, the roller mounting plates G4144 are parallel to the front side inner wall and the rear side inner wall of the outer box G413, a gap is reserved between the roller mounting plates G4144 and the inner wall of the outer box G413, roller sliding rails G4145 are arranged in the gap, the roller sliding rails G4145 are fixedly connected with the inner wall of the outer box G413, l pairs of sliding rollers G4146 are assembled on the roller mounting plates G4144, l is larger than or equal to 1, and each pair of sliding rollers G4146 clamps the roller sliding rails G4145;

A connecting strip G4147 is fixedly connected between the two lifting support strips G4143, a traction tongue G4148 is fixed on the connecting strip G4147, and the traction tongue G4148 is fixedly connected with the traction rope.

As shown in fig. 16, the double-layer conveying line G42 is supported by I2 supporting rods G423, two roller lines are erected on the top of the supporting rods G423, and rollers are laid between the two roller lines to form the upper-layer conveying line G421; two caterpillar tracks are arranged in the middle of the supporting rod G423 in a supporting way, a transmission shaft is arranged at the end point section of each caterpillar track, the transmission shafts are identical in height with the caterpillar tracks and are mutually perpendicular, transmission teeth are sleeved at two ends of each transmission shaft, the transmission teeth are opposite to the tracks of the caterpillar tracks, and the transmission shafts are fixed on horizontal mounting strips through bearings and fixedly connected with the caterpillar tracks;

the supporting rods are symmetrically distributed on two sides of the double-layer conveying line, the number of the supporting rods is selected according to the conveying length, and a pair of supporting rods which are symmetrically distributed left and right are generally arranged at intervals of 1.5 meters.

The starting point section of caterpillar track is equipped with the chain and drives the tooth, the chain drives the tooth warp bearing and is fixed in on the horizontal mount pad, horizontal mount pad and caterpillar track fixed connection, the chain drives the assembly transmission chain on tooth and the drive tooth, constitutes lower floor's transfer chain G422.

The upper layer conveying line of the design is an unpowered roller line and is pushed by manpower in the whole process, and the lower layer conveying line can be used for conveying by being provided with a motor to drag a conveying chain or by being pushed by a horizontal conveying mechanism of the onboard tool lifter.

21, 23 and 24, the to-be-inspected meter library C comprises M layers of storage layers distributed up and down, and each storage layer is provided with N to-be-inspected meter storage lines C1 distributed left and right;

the to-be-detected flowmeter depositing line C1 comprises two guide rails C14 which are arranged in parallel along the length direction of the to-be-detected meter warehouse C, a roller conveying chain C15 is arranged on the length direction of the guide rails C14, a motor C11 is arranged at the tail end of the roller conveying chain C15, and the motor C11 drives the roller conveying chain C15 to move along the length direction of the guide rails C14 through a gear reduction mechanism C12;

the flow meter storage lines C1 to be detected can be driven manually or by a motor, and are all of mature assembly line technology, as shown in fig. 25, each flow meter storage line C1 to be detected is provided with a motor C11, the motor C11 drives a chain of the flow meter storage line C1 to be detected to perform stepping motion through an incomplete gear intermittent motion mechanism C12 after being decelerated by a speed reducer, and the chain drives the assembly line to move forward. The flowmeter transferring tool E can be placed on the flowmeter storage line C1 to be detected.

The warehouse-in transfer elevator B comprises a warehouse-in elevator body B1, the feeding end of the assembly line and the to-be-detected meter warehouse C are positioned on the same side of the warehouse-in elevator body B1, a conveying entrance is formed in one side of the warehouse-in elevator body B1 facing the to-be-detected meter warehouse C, the warehouse-in elevator body B1 is slidably mounted on the ground through a warehouse-in left-right conveying sliding rail B2, an up-down conveying mechanism B3 and a warehouse-in conveying mechanism B4 are arranged in the warehouse-in elevator body B1, the warehouse-in conveying mechanism B4 is used for receiving a flowmeter D at the feeding end of the assembly line or sending the flowmeter D to the to-be-detected meter warehouse C, and the up-down conveying mechanism B3 is used for lifting the warehouse-in conveying mechanism B4;

the delivery elevator F comprises a delivery elevator body F1, a delivery opening is formed in one side, facing the to-be-detected meter warehouse C, of the delivery elevator body F1, a delivery opening is formed in one side, facing the discharge transmission line of the flowmeter calibration line 2, of the delivery elevator body F1, the internal structure of the delivery elevator body F1 is consistent with that of the delivery elevator B, and the delivery elevator body F2 is slidably mounted on the ground through delivery left and right delivery sliding rails F2.

The warehouse-in elevator body B1 and the warehouse-out elevator body F1 are collectively called as elevator bodies, the internal structure is as shown in fig. 22, the up-down conveying mechanism B3 and the in-out conveying mechanism B4 are similar to the structures of the vertical lifting mechanism G411 and the horizontal conveying mechanism G412 in the on-board tooling lifter G41, and are not repeated,

The flowmeter D is carried by a flowmeter transferring tool E in a production and warehousing assembly line A, a warehouse entering transferring elevator B, a to-be-detected meter warehouse C, a warehouse exiting transferring elevator F and a calibration return processing line G, the flowmeter transferring tool E shown in fig. 26 comprises a tool bottom plate E1, two positioning support bars E2 and two carrier rollers E3, the two positioning support bars E2 are mutually parallel and fixed on the upper surface of the tool bottom plate E1, 10 pairs of carrier roller placing grooves E21 which are opposite to each other are formed in the two positioning support bars E2, two ends of the carrier rollers E3 are respectively detachably arranged in one group of the carrier roller placing grooves E21 which are opposite to each other in the two positioning support bars E2, and the two carrier rollers E3 are mutually parallel;

the carrier roller placing groove E21 is arc-shaped, and two ends of the carrier roller E3 are respectively reduced in diameter to form a carrier roller annular mounting groove E31 which is matched with the carrier roller placing groove E21;

the carrier roller E3 is provided with 6 pairs of flowmeter limiting grooves E32, and each flowmeter limiting groove E32 is arranged between two carrier roller annular mounting grooves E31 in a group.

Two parallel positioning support bars E2 with the same structure are fixed on the surface of the tooling bottom plate E1, at least 2 carrier roller placing grooves E21 are respectively formed in each positioning support bar E2, and the notch of each positioning support bar E2 faces upwards and is used for placing carrier rollers E3;

And a flowmeter D is placed on the two mutually parallel carrier rollers E3, and the distance between the two carrier rollers E3 is adapted to the size difference according to the size difference of the flowmeter D.

The positioning support bar E2 shown in fig. 27 has 10 carrier roller placement grooves E21 in total, and the 10 carrier roller placement grooves E21 are symmetrically distributed with the long-side perpendicular bisector R of the positioning support bar E2.

The positioning support bar E2 is provided with a threaded through hole, and the positioning support bar E2 is fixedly arranged on the tool bottom plate E1 through bolts.

In this embodiment, the inner diameter of the flow tube of the flowmeter is 50-800mm, and the outer diameters of the connecting end surfaces at two ends of the flow tube are necessarily greater than 50mm, so that the distance between the centers of any two adjacent carrier roller placing grooves E21 is designed to be 50mm, and at this time, the distance between the centers of the two adjacent carrier roller placing grooves E21 is equal to the meter diameter of the flowmeter with the smallest model, so that the flowmeter with any model can be clamped and supported.

Embodiment one is as shown in fig. 28, the roller diameter of the carrier roller E3 is greater than the groove diameter of the carrier roller placing groove E21, the carrier roller E3 is provided with two sections of carrier roller annular mounting grooves E31, the diameter of the carrier roller annular mounting groove E31 is smaller than or equal to the groove diameter of the carrier roller placing groove E21, and the distance between the two sections of carrier roller annular mounting grooves E31 is equal to the distance between the two positioning support bars E2.

In the second embodiment, as shown in fig. 29, the carrier roller E3 is further provided with 10 sections of flow meter limiting grooves E32, the diameter of the flow meter limiting grooves E32 is smaller than the roller diameter of the carrier roller E3, the distance between two sections of flow meter limiting grooves E32 is equal to the length of the flow tube in the flow meter D, and the length of the flow meter limiting grooves E32 is consistent with the thickness of the connecting end face of the flow tube in the flow meter D. Since some flowmeters D have the same flow tube length although the flow tube inside diameter sizes are different, this embodiment two is applicable to at least 5 different sizes of flowmeters D.

The tooling bottom plate E1 shown in fig. 26 is a rectangular plate, and the middle parts of four sides of the tooling bottom plate are provided with plate positioning notches E11.

Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and that many similar changes can be made by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The flowmeter assembling and calibrating system is characterized by comprising a flowmeter assembling production line (1) and a flowmeter calibrating line (2), wherein the flowmeter assembling production line (1) comprises a production and warehousing pipeline (A), an in-warehouse transfer elevator (B), a to-be-inspected meter warehouse (C), an out-warehouse transfer elevator (F) and a calibrating and returning processing line (G), the tail end of the production and warehousing pipeline (A) is a pipeline feeding end, the pipeline feeding end is opposite to an elevator feeding port of the in-warehouse transfer elevator (B), the in-warehouse transfer elevator (B) is used for receiving a flowmeter (D) of the production and warehousing pipeline (A) and conveying the flowmeter to-be-inspected meter storage line (C1), the out-warehouse transfer elevator (F) is used for conveying the flowmeter (D) on the to-be-inspected meter storage line (C1) to a feeding transmission line of the flowmeter calibrating line (2), and a discharging transmission line of the flowmeter calibrating line (2) is connected with the calibrating and returning processing line (G);

The flowmeter line is primarily processed by a production and warehousing assembly line, then is sent to a to-be-detected meter warehouse by a warehouse-in transfer elevator to wait for calibration, and is sent to a flowmeter calibration line by a warehouse-out transfer elevator to complete calibration during calibration, and finally the calibrated flowmeter enters a calibration return processing line to carry out final processing and finished product packaging, so that a closed-loop assembly line from flowmeter blanks to calibration and final finished product packaging is formed;

the flowmeter calibration line (2) comprises a first calibration line (21), a second calibration line (22) and a third calibration line (23), wherein the maximum calibration flow of the first calibration line (21) is greater than the maximum calibration flow of the second calibration line (22) is greater than the maximum calibration flow of the third calibration line (23), and the minimum calibration flow of the first calibration line (21) is greater than the minimum calibration flow of the second calibration line (22) is greater than the minimum calibration flow of the third calibration line (23);

the first calibration circuit (21) comprises M1 first standard pipes (212) which are connected in parallel, a first standard flowmeter (214) and a first standard pipe valve (213) are installed on the first standard pipes (212), the same first collecting pipe (215) is connected to the water outlet end of the first standard pipes (212), the first collecting pipe (215) is connected with F1 first calibration pipes (216), a first calibration control valve (2110) is installed on the first calibration pipes (216) and is connected with N1 first to-be-detected flowmeters (217) in series, and the same first flow adjusting mechanism is connected to the water outlet end of the first calibration pipes (216);

The second calibration circuit (22) comprises M2 second standard pipes (224) which are connected in parallel, a second standard flowmeter (225) and a second standard pipe valve (223) are installed on the second standard pipes (224), the water outlet ends of the M2 second standard pipes (224) are connected with the same second collecting pipe (226), the second collecting pipe (226) is connected with F2 second calibration pipes (2210), a second calibration control valve (227) is installed on the second calibration pipes (2210) and is connected with N2 second to-be-detected flowmeters (229) in series, and the water outlet ends of the F2 second calibration pipes (2210) are connected with the same second flow regulating mechanism;

the third calibration circuit (23) comprises M3 third standard pipes (231) which are connected in parallel, a third standard flowmeter (233) and a third standard pipe valve (232) are installed on the third standard pipes (231), a third collecting pipe (2311) is connected to the water outlet end of the M3 third standard pipes (231), F3 third calibration pipes (234) are connected to the third collecting pipe (2311), a third calibration control valve (236) is installed on the third calibration pipes (234) and N3 third to-be-detected flowmeters (235) are connected in series, and the same third flow adjusting mechanism is connected to the water outlet end of the F3 third calibration pipes (234);

wherein M1, M2, M3, F1, F2, F3, N1, N2 and N3 are all natural numbers.

2. A flowmeter assembling and calibrating system according to claim 1, wherein said flowmeter calibrating line (2) is supplied with water by a water supply mechanism (24), said water supply mechanism (24) comprises a pressure stabilizing water tank (241), said pressure stabilizing water tank (241) comprises an overflow tank (241 a), a constant pressure tank (241 b) and a water collecting tank (241 c) which are sleeved in sequence from inside to outside, and the height of said overflow tank (241 a) is larger than that of said constant pressure tank (241 b);

the water inlet ends of M2 standard pipes (224) are connected with a fourth collecting pipe (222), the water inlet ends of M3 standard pipes (231) are connected with a fifth collecting pipe (237), the constant-pressure tanks (241 b) are respectively connected with the fourth collecting pipe (222) and the fifth collecting pipe (237) through a first water supply pipe (2414) and a second water supply pipe (2410), and the first water supply pipes (2414) and the second water supply pipes (2410) are respectively provided with a first water supply valve (2411);

the water supply mechanism (24) further comprises a circulating pool (242), the circulating pool (242) is located at a low position, the pressure stabilizing pool (241) is located at a high position, the constant pressure pool (241 b) is connected with the circulating pool (242) through a tap water pipe (2412), and the water collecting pool (241 c) is connected with the circulating pool (242) through a water return pipe (246);

the circulating pool (242) is connected with L0 third water supply pipes (244), a water pump (243) and a second water supply valve (2415) are installed on the third water supply pipes (244), K third water supply pipes (244) are connected with water supply pipes (248), K is smaller than L0, the water outlet end of each water supply pipe (248) is connected with the overflow pool (241 a), and a water supply control valve (249) is arranged on each water supply pipe (248);

The water outlet ends of the L1 third water supply pipes (244) are connected with a first pressure stabilizing tank (211), and the water inlet ends of the M1 first standard pipes (212) are connected with the first pressure stabilizing tank (211);

the water outlet end of the L2 third water supply pipe (244) is connected with a second surge tank (221), the fourth collecting pipe (222) is connected with the second surge tank (221) through a first transition pipe, a third water supply valve (220) is arranged on the first transition pipe, and the first water supply pipe (2414) is connected with the first transition pipe behind the third water supply valve (220);

the water outlet end of the L3 third water supply pipes (244) is connected with a third pressure stabilizing tank (245), the fifth collecting pipe (237) is connected with the third pressure stabilizing tank (245) through a second transition pipe, a fourth water supply valve (2413) is arranged on the second transition pipe, and the second water supply pipe (2410) is connected with the second transition pipe behind the fourth water supply valve (2413);

l1, L2, L3 are all natural numbers, and l1+l2+l3=l0.

3. The flowmeter assembly and calibration system of claim 1 wherein the first calibration tube (216), the second calibration tube (2210), and the third calibration tube (234) are identical in construction;

the third calibration pipe (234) comprises a pipe base (234 d), and a fixed pipe section (234 a), a movable pipe section (234 b) and an adjustable pipe section (234 c) which are sequentially arranged on the pipe base (234 d) along the water flow direction;

The water inlet end of the fixed pipe section (234 a) is connected with the third collecting pipe (2311);

the movable pipe section (234 b) comprises A1 movable pipes (234 b 1) movably mounted on the pipe base (234 d) through pipe supporting pieces (234 e), all the movable pipes (234 b 1) are arranged along the same straight line, flowmeter clamps are slidably mounted on the pipe bases (234 d) between adjacent movable pipes (234 b 1), the third flowmeter (235) to be detected is detachably mounted on the flowmeter clamps, the water inlet ends and the water outlet ends of the third flowmeter (235) to be detected are respectively opposite to the movable pipes (234 b 1) at the two ends of the third flowmeter (235), the movable pipes (234 b 1) are connected with propping mechanisms (234 h), and the propping mechanisms (234 h) prop up the corresponding movable pipes (234 b 1) forwards, so that the first movable pipes (234 b 1) are in butt joint with the water outlet ends of the fixed pipe sections (234 a) at the front ends of the movable pipes, and the water inlet ends and the water outlet ends of the third flowmeter (235) to be detected are respectively in butt joint with the movable pipes (234 b) at the corresponding water inlet ends and the water outlet ends of the movable pipes (234 b);

the adjustable pipe section (234 c) is connected to the movable pipe (234 b 1) of the A1 st.

4. The flowmeter assembling and calibrating system according to claim 1, wherein the tail ends of the first calibrating pipe (216), the second calibrating pipe (2210) and the third calibrating pipe (234) are respectively connected with a trench (251) through a pressure relief pipe, the trench (251) is connected with the circulating pool (242), and the pressure relief pipe is provided with a pressure relief control valve (258);

The first flow regulating mechanism comprises P1 first flow regulating pipes (219) which are connected in parallel, the water outlet ends of all the first calibration pipes (216) are connected with a sixth collecting pipe (218), and the water inlet ends of the first flow regulating pipes (219) are connected with the sixth collecting pipe (218);

the second flow regulating mechanism comprises P2 second flow regulating pipes (2211) which are connected in parallel, the water outlet ends of all the second calibration pipes (2210) are connected with a seventh collecting pipe (2212), and the water inlet ends of the second flow regulating pipes (2211) are connected with the seventh collecting pipe (2212);

the third flow regulating mechanism comprises P3 third flow regulating pipes (239) which are connected in parallel, the water outlet ends of all the third calibration pipes (234) are connected with an eighth collecting pipe (238), and the water inlet ends of the third flow regulating pipes (239) are connected with the eighth collecting pipe (238);

the first flow regulating pipe (219), the second flow regulating pipe (2211) and the third flow regulating pipe (239) are respectively provided with a flow regulating valve (2310), and P1, P2 and P3 are natural numbers;

the utility model discloses a flowmeter calibration line, including flowmeter calibration line (2), the flowmeter calibration line is equipped with flowmeter calibration line (2), and the flowmeter calibration line (2) is equipped with weighing calibration mechanism (25), and this weighing calibration mechanism (25) are including B1 weighing scale, and B1 is natural number, install weighing water tank (255) on the weighing scale, wherein one second flow control pipe (2211) and the play water end of third flow control pipe (239) are connected with one of them weighing water tank (255), other second flow control pipe (2211), third flow control pipe and the play water end of all first flow control pipes (219) are connected with same eighth collecting pipe (238), and this eighth collecting pipe (238) are respectively through shunt tubes (253) other weighing water tank (255) are connected, install shunt control valve (254) on shunt tubes (253), all weighing water tanks (255) are connected with trench (251) through circulating pipe (256).

5. The flowmeter assembling and calibrating system according to claim 1, wherein the production and warehousing assembly line (a) comprises a body air tightness testing station (A1), a circuit board mounting station (A2) and a circuit board plastic packaging station (A3) which are sequentially connected with each other through a conveyor belt, the tail end of the production and warehousing assembly line (a) is an assembly line feeding end, and the assembly line feeding end is opposite to an elevator feeding port of the warehouse entry and transportation elevator (B);

the calibration return processing line (G) comprises a gauge outfit sealing station (G1), a gauge outfit air tightness testing station (G2), a flowmeter drying station (G3) and a flowmeter packaging station (G4) which are sequentially connected through a conveyor belt, wherein a plate returning conveying line of the flowmeter packaging station (G4) is connected with a starting point plate supply conveying line (A0) of the production and warehousing assembly line (A).

6. The flowmeter assembling and calibrating system according to claim 5, wherein the body air tightness testing station (A1) and the gauge head air tightness testing station (G2) are both provided with an air tightness detecting device (a 11), the air tightness detecting device (a 11) comprises a water tank (a 11 h) and a stand (a 11 a) capable of lifting in the water tank (a 11 h) under the drive of a stand lifting control mechanism (a 11G), a vertically opposite arranged body fixed sealing disc (a 11 b) and a gauge head active sealing disc (a 11 c) are mounted on the stand (a 11 a), the gauge head active sealing disc (a 11 c) can be driven by a sealing disc driving device (a 11 d) to approach or be far away from the body fixed sealing disc (a 11 b), a test air filling hole (a 11b 1) is formed in the surface of the body fixed sealing disc (a 11 b) on one side, which is close to the body active sealing disc (a 11 c), a gauge head sealing seat (a 11 e) is arranged in the water tank (a 11 h), and the gauge head sealing disc (a 11 c) can be driven by the body sealing disc driving mechanism (a 11 c) to move horizontally between the body fixed sealing disc (a 11 f) and the gauge head sealing disc (a 11 c);

The meter body fixing sealing disc (A11 b) and the meter body driving sealing disc (A11 c) are provided with at least two concentric annular sealing grooves (A1 A1) with gradually increased radius on one side disc surfaces, rubber sealing gaskets (A1 a 2) are arranged at the bottom of each annular sealing groove (A1 A1), and the test air charging holes (A11 b 1) are positioned at the circle center positions of the adjacent annular sealing grooves (A1 A1);

the transfer device (A12) used for transferring the flowmeter (D) between the conveyor belt and the air tightness detection device (A11) is arranged beside the conveyor belt, the transfer device (A12) comprises a cantilever mounting seat (A12 a) capable of rotating, a cantilever (A12 b) capable of being arranged on the cantilever mounting seat (A12 a) in an up-and-down swinging mode, a cantilever driving device (A12 c) used for driving the cantilever (A12 b) to swing and a flowmeter clamp (A12 e) arranged at one end of the cantilever (A12 b) through a horizontal position adjusting mechanism (A12D).

7. A flowmeter assembling and calibrating system according to claim 5, wherein said flowmeter packing station (G4) comprises an onboard tooling elevator (G41), a double-deck conveyor line (G42), a packing box strapping machine (G43), said onboard tooling elevator (G41) having a feed end that interfaces with the conveyor belt of the calibration return processing line (G), and the onboard tooling elevator (G41) having a lifting table height that coincides with the conveyor belt height, said lifting table lowering height coinciding with the lower conveyor line (G422) of the double-deck conveyor line (G42), and the onboard tooling elevator (G41) having an output end that interfaces with the lower conveyor line (G422), said lower conveyor line (G422) being connected to said starting point supply board conveyor line (A0);

The bundling area of the packing box bundling machine (G43) is positioned on the upper layer conveying line (G421) of the double-layer conveying line (G42);

the on-board tooling lifter (G41) comprises an outer box (G413), wherein a lifting frame (G414) which moves up and down is arranged in the outer box (G413);

a vertical lifting mechanism (G411) is fixedly arranged in the outer box (G413) and used for lifting/lowering the lifting frame (G414), a horizontal conveying mechanism (G412) is fixedly arranged at the lower part of the lifting frame (G414) and used for receiving the flowmeter transferring tool (E) from the conveyor belt and sending the flowmeter transferring tool (E) to the lower conveying line (G422);

the double-layer conveying line (G42) is supported by I2 supporting rods (G423), two roller lines are arranged on the top of each supporting rod (G423) in a supporting mode, rollers are paved between the two roller lines, and the upper-layer conveying line (G421) is formed;

two chain rails are arranged in the middle of the supporting rod (G423), a transmission shaft is arranged at the end point section of each chain rail, the transmission shaft is identical in height with the chain rail and is mutually perpendicular to the chain rail, transmission teeth are sleeved at two ends of the transmission shaft and are opposite to the track of the chain rail, and the transmission shaft is fixed on a horizontal installation strip through a bearing and is fixedly connected with the chain rail;

the starting point section of caterpillar track is equipped with the chain and drives the tooth, the chain drives the tooth warp bearing and is fixed in on the horizontal mount pad, horizontal mount pad and caterpillar track fixed connection, the chain drives the assembly transmission chain on tooth and the driving tooth, constitutes lower floor's transfer chain (G422).

8. The flowmeter assembling and calibrating system according to claim 1, wherein the to-be-inspected meter library (C) comprises M storage layers distributed up and down, each storage layer being provided with N to-be-inspected meter storage lines (C1) distributed left and right;

the to-be-detected flowmeter storing line (C1) comprises two guide rails (C14) which are arranged in parallel along the length direction of the to-be-detected meter warehouse (C), a roller conveying chain (C15) is arranged on the length direction of the guide rails (C14), a motor (C11) is arranged at the tail end of the roller conveying chain (C15), and the motor (C11) drives the roller conveying chain (C15) to move along the length direction of the guide rails (C14) through a gear reduction mechanism (C12);

the warehouse-in transfer elevator (B) comprises a warehouse-in elevator body (B1), the feeding end of the assembly line and the warehouse-in elevator (C) to be detected are positioned on the same side of the warehouse-in elevator body (B1), a conveying entrance is formed in one side of the warehouse-in elevator body (B1) facing the warehouse-in elevator (C), the warehouse-in elevator body (B1) is slidably mounted on the ground through a warehouse-in left-right conveying sliding rail (B2), an up-and-down conveying mechanism (B3) and a warehouse-in conveying mechanism (B4) are arranged in the warehouse-in elevator body (B1), the warehouse-in conveying mechanism (B4) is used for receiving a flowmeter (D) at the feeding end of the assembly line or sending out the flowmeter (D) to the warehouse-in elevator (C), and the up-and-down conveying mechanism (B3) is used for lifting the warehouse-in conveying mechanism (B4);

The delivery elevator (F) comprises a delivery elevator body (F1), one side of the delivery elevator body (F1) facing to a to-be-detected meter warehouse (C) is provided with a delivery inlet, one side of the delivery elevator body (F1) facing to a discharge transmission line of a flowmeter calibration line (2) is provided with a delivery outlet, and the internal structure of the delivery elevator body (F1) is consistent with that of the delivery elevator (B) and is slidably mounted on the ground through delivery left and right slide rails (F2).

9. The flowmeter assembling and calibrating system according to claim 1, wherein the flowmeter (D) is carried by a flowmeter transferring tool (E) in a production and warehousing assembly line (a), a warehouse-in transferring elevator (B), a to-be-inspected meter warehouse (C), a warehouse-out transferring elevator (F) and a calibrating and returning processing line (G), the flowmeter transferring tool (E) comprises a tool bottom plate (E1), two positioning support bars (E2) and two carrier rollers (E3), the two positioning support bars (E2) are mutually parallel and fixed on the upper surface of the tool bottom plate (E1), carrier roller placing grooves (E21) which are opposite to each other are formed in the two positioning support bars (E2), and two ends of the carrier rollers (E3) are respectively detachably placed in one group of the two opposite carrier roller placing grooves (E21) of the two positioning support bars (E2) and are mutually parallel;

The carrier roller placing groove (E21) is arc-shaped, and two ends of the carrier roller (E3) are respectively reduced in diameter to form a carrier roller annular mounting groove (E31) which is matched with the carrier roller placing groove (E21);

the carrier rollers (E3) are provided with flowmeter limiting grooves (E32), and the flowmeter limiting grooves (E32) are arranged between two carrier roller annular mounting grooves (E31) in a group by group mode.