On-site multi-calibration self-adaptive calibration type automobile oil tank truck capacity measurement and control system and calibration method

Abstract

The invention discloses an on-site multi-calibration self-adaptive calibration type automobile oil tank truck capacity measurement and control system and a calibration method, and relates to the technical field of automobile oil tank truck capacity measurement and control. The on-site multi-calibration self-adaptive calibration type automobile oil tank truck capacity measurement and control system comprises a calculation module, a flow calibration subsystem, a standard metal measuring vessel, a capacity calibration subsystem, a measurement calibration subsystem and other related devices; the flow calibration subsystem completes calibration through a flow method, the capacity calibration subsystem completes calibration through a capacity method, and the measurement calibration subsystem completes calibration through a measurement method; and the calculation module is in signal connection with the flow calibration subsystem, the capacity calibration subsystem, the measurement calibration subsystem and related devices. According to the invention, the capacity of the automobile oil tank truck can be calibrated in various modes, the on-site self-adaptive calibration of each subsystem can be realized, an external standard device for tracing is not needed, a calibration working platform does not need to be temporarily built, and the tracing cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of capacity measurement and control of automobile oil tankers, and more particularly to an on-site multi-calibration self-adaptive calibration type automobile oil tanker capacity measurement and control system and a calibration method. Background Art

[0002] Tank trucks are special vehicles for transporting liquid light petroleum and chemical products. They are composed of one or several warehouses. The capacity of each warehouse can be used as a measuring instrument for trade settlement or internal handover after being calibrated by a qualified technical organization. The calibration of tank trucks is generally carried out in accordance with the national metrological verification regulations of JJG 133 "Capacity of Tank Trucks". Commonly used calibration methods include flow method, volume method and measurement method. Since the equipment and work processes required for various calibration methods are different, the actual calibration efficiency, accuracy and other calibration effects are also different. The operators of technical organizations need to choose according to the actual situation, and customers sometimes specify a certain calibration method. On the one hand, the existing tank truck capacity measurement and control system often only uses a single calibration method, and the integration of multiple methods is not enough to meet the diverse calibration needs of customers; on the other hand, due to the relatively harsh on-site use environment, the measuring instruments of the tank truck capacity measurement and control system need to have means to trace the measurement at any time to ensure that their values ​​are accurate and reliable. However, considering that the measuring instruments are fixedly installed on site, conventional metrological traceability means can only be achieved through regular, on-site calibration, and the implementation process is fraught with difficulties. First, the traceability standards need to be transported from the laboratory to the site, which places higher demands on the stability and reliability of the standards; second, the measuring instruments on the system are often installed on a platform higher than the tanker truck, and a temporary calibration work platform needs to be built for on-site calibration, which is then dismantled after the calibration is completed, resulting in high metrological traceability costs; third, the regular on-site calibration method cannot meet the system's need for traceability at any time.

[0003] Therefore, how to achieve on-site traceability of measuring instruments at any time while meeting multiple calibration requirements and reduce traceability costs is an urgent problem that technical personnel in this field need to solve. Summary of the invention

[0004] In view of this, the present invention provides an on-site multi-calibration adaptive calibration type automobile tanker capacity measurement and control system, which can realize the calibration of automobile tanker capacity in a variety of ways to meet the diverse calibration needs of customers; at the same time, it can also fully utilize the existing hardware of the measurement and control system to realize on-site adaptive calibration according to the anytime and on-site traceability requirements of the main measuring instruments, without the need for external traceability standards and the need to temporarily build a calibration work platform, thereby reducing the traceability cost.

[0005] In order to achieve the above object, the present invention adopts the following technical solution: A field multi-calibration self-adaptive calibration type automobile tanker capacity measurement and control system realizes the calibration of the target tank of the automobile tanker, comprising: a calculation module, an external water pool, a water pump, a flow meter pipeline, a standard metal measuring instrument pipeline, a first stop valve, a second stop valve, a third stop valve, a flow calibration subsystem, a first flow regulating valve, at least one standard metal measuring instrument, at least one capacity calibration subsystem, a first drainage pipeline, a second drainage pipeline, and at least one measurement calibration subsystem, wherein the external water pool is connected to the water pump through a pipeline; the water flow output by the water pump is divided into two streams, which enter the standard metal measuring instrument pipeline and the flow meter pipeline respectively; the water flow of the standard metal measuring instrument pipeline passes through the first stop valve, the first flow regulating valve and the third drainage pipeline in sequence; The stop valve enters the bypass and enters the standard metal measuring instrument through the bypass; another water flow passes through the second stop valve and the flow meter pipeline in turn and enters the flow calibration subsystem; the capacity calibration subsystem or the measurement calibration subsystem calibrates the target warehouse of the automobile tanker based on the water flow entering the standard metal measuring instrument, the first drainage pipeline and the second drainage pipeline; the flow calibration subsystem calibrates the target warehouse of the automobile tanker based on another water flow, the standard metal measuring instrument, the first drainage pipeline and the second drainage pipeline; the calculation module is connected with the water pump, each stop valve, each regulating valve, the flow calibration subsystem, the capacity calibration subsystem and the measurement calibration subsystem signal; the number of the standard metal measuring instrument, the capacity calibration subsystem and the measurement calibration subsystem corresponds.

[0006] Preferably, the first drainage pipeline includes a bypass drainage pipe and a bypass drainage valve; the second drainage pipeline includes a drainage pipe and a drainage valve; and also includes a fourth stop valve and a fifth stop valve, which are arranged before and after the water pump.

[0007] Preferably, the flow calibration subsystem comprises: a flow meter group, a stop valve group, a first thermometer, a second flow regulating valve, a water inlet pipe, and a switching group, wherein the flow meter group comprises n flow meters; the stop valve group comprises n stop valves, the number of flow meters in the flow meter group corresponds to the number of stop valves in the stop valve group, the stop valve is arranged before the flow meter, and controls the selection and abandonment of the corresponding flow meter; the flow meter group is connected with the first thermometer, the second flow regulating valve, and the switching group in sequence, the first thermometer measures the temperature value of the water flowing out of the flow meter group, and the second flow regulating valve controls the instantaneous flow rate of the water flow; the water inlet pipe is connected with m switching groups, the number of switching groups corresponds to the number of standard metal measuring instruments, the switching group comprises a water inlet valve, a nozzle, a bypass, and a working pipeline, the water inlet valve is connected with a nozzle, the nozzle guides the water flow into the bypass or the working pipeline, the lower part of the bypass is the inlet of the standard metal measuring instrument, the working pipeline is provided with a locking valve, and the working pipeline is connected with the target bin through the locking valve and the filling pipeline.

[0008] Preferably, the capacity calibration subsystem includes: an overflow pipe, an overflow valve, a first liquid level gauge, and a second thermometer. The overflow pipe is arranged at the middle position outside the measuring neck of the standard metal measuring vessel, and the liquid level in the measuring neck is leveled by gravity; the overflow valve is arranged on the overflow pipe to control the on and off of the overflow pipe; the first liquid level gauge is arranged inside the measuring neck of the standard metal measuring vessel to measure the current liquid level value of the standard metal measuring vessel; the second thermometer is arranged on the outer wall of the standard metal measuring vessel to measure the temperature value of the water in the standard metal measuring vessel.

[0009] Preferably, it also includes a first tray and a first bracket structure, the bottom of the standard metal measuring instrument is fixed on the first tray, four first positioning pins are provided on the lower surface of the first tray, and a first bracket structure is provided under the first tray. The lower part of the first bracket structure is provided with four first supporting feet, and the upper part of the first bracket structure is provided with four first positioning holes at positions corresponding to the four first positioning pins of the first tray. When the first positioning pins of the first tray are inserted into the corresponding first positioning holes of the bracket, the first bracket structure supports the standard metal measuring instrument through the first tray.

[0010] Preferably, the weighing and calibration subsystem includes: an electronic scale, a second tray, a second support structure, a hydraulic lifting platform, and weights. The electronic scale is arranged below the first tray, and the upper surface of the electronic scale does not contact the lower surface of the first tray; the bottom of the electronic scale is fixed on the second tray, and a through hole is arranged in the center of the second tray as a weight hanging channel; four second locating pins are installed at the four corners of the second tray, and a second support structure is arranged below, and the second support structure is provided with four second supporting feet, and four second locating holes are arranged at the four corners of the upper surface, and the positions are adapted to the four second locating pins of the second tray; the hydraulic lifting platform is arranged below the second tray, and is used to lift the electronic scale to weigh the water weight inside the standard metal measuring vessel for weighing.

[0011] An on-site multi-calibration adaptive calibration type automobile tanker capacity calibration method, using the standard metal measuring instrument to calibrate the flow calibration subsystem, determine the flow meter to be calibrated and open the corresponding stop valve, determine the adapter group to be used and open the corresponding water inlet valve; Open the second stop valve and select the flow meter pipeline; open the fourth stop valve, the fifth stop valve and the water pump. The water in the external water pool enters the flow meter pipeline under the action of the water pump, passes through the corresponding stop valve, the flow meter to be calibrated, the second flow regulating valve, the water inlet valve, the nozzle and the working pipeline, and is discharged to the external water pool; adjust the target instantaneous flow value through the second flow regulating valve, and after the flow stabilizes, the calculation module switches the nozzle to the bypass, and the water flow is introduced into the standard metal measuring vessel; when the liquid level measured by the first liquid level gauge in the standard metal measuring vessel reaches the preset value, the calculation module switches the nozzle to the working pipeline, records the cumulative flow and water temperature of the flow meter to be calibrated, the liquid level and water temperature of the standard metal measuring vessel, opens the bypass drain valve of the standard metal measuring vessel, and drains all the water inside it into the external water pool, then closes the bypass drain valve, calculates the flow indication error of the flow meter, and completes this calibration; repeats the operation and starts the next calibration until all flow meter calibration work is completed.

[0012] A method for calibrating the capacity of a tanker truck using an on-site multi-calibration adaptive calibration type comprises the following steps: using an electronic scale to calibrate a flow calibration subsystem, determining a flow meter to be calibrated and opening a corresponding stop valve, determining a switching group to be used and opening a corresponding water inlet valve; raising a load-bearing plate of a hydraulic lifting platform, and causing the upper surface of the electronic scale to contact the lower surface of a first tray until the positioning pin of the first tray leaves the corresponding positioning hole by more than 20 mm, fixing the position of the load-bearing plate; and supporting the upper electronic scale and a standard metal measuring instrument through a second tray and a first tray, and clearing the reading of the electronic scale to zero; Open the second stop valve and select the flow meter pipeline; open the fourth stop valve, the fifth stop valve and the water pump. The water in the external water pool enters the flow meter pipeline under the action of the water pump, passes through the corresponding stop valve, the flow meter to be calibrated, the second flow regulating valve, the water inlet valve, the nozzle and the working pipeline, and is discharged to the external water pool; adjust the target instantaneous flow value through the second flow regulating valve, and after the flow stabilizes, the calculation module switches the nozzle to the bypass, and the water flow is introduced into the standard metal measuring vessel; when the liquid level measured by the first liquid level gauge in the standard metal measuring vessel reaches the preset value, the calculation module switches the nozzle to the working pipeline, records the cumulative flow and water temperature of the flow meter to be calibrated, the cumulative mass and water temperature of the electronic scale, opens the bypass drain valve of the standard metal measuring vessel, and drains all the water inside it into the external water pool, and then closes the bypass drain valve, calculates the flow indication error of the flow meter, and completes this calibration; repeats the operation and starts the next calibration until the calibration of the indication error of all flow meters is completed.

[0013] A method for calibrating the capacity of an on-site multi-calibration self-adaptive calibration type automobile tanker truck comprises the following steps: using an electronic scale to calibrate a capacity calibration subsystem; determining a standard metal measuring instrument to be calibrated and opening a corresponding third stop valve and a relief valve; raising a load-bearing plate of a hydraulic lifting platform, and causing the upper surface of the electronic scale to contact the lower surface of a first tray until the positioning pin of the first tray leaves the corresponding positioning hole by more than 20 mm, and then fixing the position of the load-bearing plate; and supporting the upper electronic scale and the standard metal measuring instrument through a second tray and a first tray, and clearing the corresponding electronic scale reading to zero; Open the first stop valve and select the standard metal measuring instrument pipeline; open the fourth stop valve, the fifth stop valve and the water pump. The water in the external water pool enters the standard metal measuring instrument pipeline under the action of the water pump, passes through the first flow regulating valve and the third stop valve, and flows into the standard metal measuring instrument to be calibrated. During the process, the instantaneous flow value of the water flow is adjusted by the first flow regulating valve. When the liquid level measured by the first liquid level gauge in the standard metal measuring instrument reaches the preset value, the calculation module automatically stops the pump, controls the fourth stop valve, the fifth stop valve and the third stop valve to be closed, and the excess water in the measuring neck of the standard metal measuring instrument flows out from the overflow pipe. After the liquid level is leveled, record the cumulative capacity of the standard metal measuring instrument, the water temperature, and the cumulative mass value of the electronic scale; open the bypass drain valve of the standard metal measuring instrument, drain all the water inside it into the external water pool, and then close the bypass drain valve, calculate the nominal capacity indication error of the standard metal measuring instrument, and complete this calibration; repeat the operation and start the next calibration until the calibration of all standard metal measuring instruments is completed.

[0014] The invention discloses an on-site multi-calibration self-adaptive calibration type automobile tanker capacity calibration method, which utilizes weights to calibrate a measurement calibration subsystem; determines an electronic scale to be calibrated and resets its reading; composes a weight group with single weights, stacks them by hooks, places them on a load-bearing plate of a hydraulic lifting platform, raises the load-bearing plate, and when the upper surface of the uppermost weight of the weight group approaches the bottom of a second tray, hangs the uppermost weight hook on the electronic scale through a through hole of the second tray, and then slowly lowers the load-bearing plate until the upper surface of the load-bearing plate is more than 20 mm away from the lower surface of the lowermost weight, and the weight group as a whole is in a suspended state, records the weight group mass and the accumulated weight of the electronic scale at this time, calculates the mass indication error of the electronic scale, and completes this calibration; repeats the operation, starts the next calibration, and completes the calibration of all electronic scales.

[0015] It can be known from the above technical scheme that compared with the prior art, the present invention discloses a field multi-calibration adaptive calibration type automobile tanker capacity measurement and control system and calibration method, which adopts an integrated design to realize the integration of three warehouse capacity calibration methods: flow method, capacity method, and measurement method, which is conducive to the operator or customer to flexibly and efficiently select the calibration method; adopts a compact design, without the help of an external traceability standard, fully utilizes the original hardware, and realizes the function of adaptive calibration of the flow calibration subsystem, capacity calibration subsystem, and measurement calibration subsystem at any time; saves hardware costs; adopts a flow meter group design, multiple sets of capacity calibration subsystems, and multiple sets of measurement calibration subsystems to meet a larger flow calibration range and more warehouse capacity calibration increment requirements, broadening the application scope and scenarios of the device. The present invention has a high degree of integration, complete functions, strong applicability, and is easy to promote and use in the industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the system structure provided by the present invention; Figure 2 A structural diagram of the measurement and calibration subsystem provided by the present invention; Figure 3 A structural diagram of a second tray and a bracket provided by the present invention; Figure 4 This is a structural diagram of the first tray and bracket provided by the present invention.

[0018] In the figure: 1 external water tank; 11 first stop valve; 12 second stop valve; 13 third stop valve; 14 first flow regulating valve; 15 locking valve; 16 filling pipeline; 2 water pump; 21 fourth stop valve; 22 fifth stop valve; 3 flow meter pipeline; 31 flow meter group; 32 stop valve group; 33 first thermometer; 34 second flow regulating valve; 35 water inlet pipe; 36 water inlet valve; 37 nozzle; 38 bypass; 39 working pipeline; 4 standard metal measuring instrument pipeline; 41 first drainage pipeline; 42 bypass drainage pipe; 43 bypass drainage valve; 44 second drainage pipeline; 45 drainage pipe; 46 drainage valve; 51 standard Quasi-metallic measuring instrument; 52 overflow pipe; 53 overflow valve; 54 first liquid level gauge; 55 second thermometer; 56 first tray; 57 first bracket structure; 58 measuring neck; 59 volume structure; 61 electronic scale; 62 second tray; 63 second bracket structure; 64 hydraulic lifting platform; 65 load-bearing plate; 66 hydraulic device; 67 third bracket structure; 68 weight; 71 target bin; 72 second liquid level gauge; 73 third thermometer; 74 computing module; 81 first supporting foot; 82 first positioning hole; 83 first positioning pin; 84 second supporting foot; 85 second positioning hole; 86 second positioning pin; 87 through hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] The flow meter group 31 is used as the main measuring instrument of the flow calibration subsystem. The specifications of each flow meter can be different. Different flow meters or their parallel combinations can be selected as needed.

[0021] The standard metal measuring vessel 51 serves as the main measuring instrument of the capacity calibration subsystem and also as the standard device for traceability of the flow calibration subsystem. It is composed of a volume structure 59, a measuring neck 58, an overflow pipe 52, an overflow valve 53, a first liquid level meter 54, and a second thermometer 55. Standard metal measuring vessels 51 of different specifications can be selected according to actual needs.

[0022] The electronic scale 61 is used as the main measuring instrument for measuring the calibration subsystem and also as a standard device for traceability of the flow or capacity calibration subsystem. Electronic scales 61 of different specifications can be selected according to actual needs.

[0023] The embodiment of the present invention discloses a field multi-calibration adaptive calibration type automobile tanker capacity measurement and control system, which realizes the calibration of the target tank 71 of the automobile tanker, such as Figure 1As shown, it includes: a calculation module, an external water pool 11, a water pump 2, a flow meter pipeline 3, a standard metal measuring instrument pipeline 4, a first stop valve 11, a second stop valve 12, a third stop valve 13, a bypass 38, a flow calibration subsystem, a first flow regulating valve 14, at least one standard metal measuring instrument 51, at least one capacity calibration subsystem, a first drainage pipeline 41, a second drainage pipeline 44, and at least one measurement calibration subsystem. The external water pool 1 is connected to the water pump 2 through a pipeline; the water flow output by the water pump 2 is divided into two streams, which enter the standard metal measuring instrument pipeline 4 and the flow meter pipeline 3 respectively; the water flow of the standard metal measuring instrument pipeline 4 passes through the first stop valve 11, the first flow regulating valve 14 and the third stop valve 13 in sequence and enters the bypass 38, and passes through the bypass 38 enters the standard metal measuring vessel 51; another stream of water flows through the second stop valve 12 and the flow meter pipeline 3 in turn and enters the flow calibration subsystem; the capacity calibration subsystem or the measurement calibration subsystem calibrates the target bin 71 of the automobile tanker based on the water flow entering the standard metal measuring vessel 51, the first drainage pipeline 41 and the second drainage pipeline 44; the flow calibration subsystem calibrates the target bin 71 of the automobile tanker based on another stream of water, the standard metal measuring vessel 51, the first drainage pipeline 41 and the second drainage pipeline 44; the calculation module 74 is connected with the water pump 2, each stop valve, each regulating valve, the flow calibration subsystem, the capacity calibration subsystem and the measurement calibration subsystem signal; the number of standard metal measuring vessels 51, the capacity calibration subsystem and the measurement calibration subsystem corresponds.

[0024] In a specific embodiment, the first drainage pipeline 41 includes a bypass drainage pipe 42 and a bypass drainage valve 43 ; the second drainage pipeline 44 includes a drainage pipe 45 and a drainage valve 46 ; the fourth stop valve 21 and the fifth stop valve 22 are arranged before and after the water pump 2 .

[0025] In a specific embodiment, the flow calibration subsystem includes: a flow meter group 31, a stop valve group 32, a first thermometer 33, a second flow regulating valve 34, a water inlet pipe 35, and a switching group. The flow meter group 31 includes n flow meters, which can be flow meters of various principles, or other flow metering instruments with flow metering functions; the stop valve group 32 includes n stop valves, and the number of flow meters in the flow meter group 31 corresponds to the number of stop valves in the stop valve group 32. The stop valve is arranged before the flow meter to control the selection and abandonment of the corresponding flow meter 3. Different flow meters or their parallel combinations can be selected as needed; the flow meter group 31 is connected in sequence to the first thermometer 33, the second flow regulating valve 34 and The adapter group is connected, the first thermometer 33 measures the temperature value of the water flowing out of the flow meter group 31, and the second flow regulating valve 34 controls the instantaneous flow of the water flow; the water inlet pipe 35 is connected with m adapter groups, the number of adapter groups corresponds to the number of standard metal measuring instruments 51, and a certain adapter group and the corresponding standard metal measuring instrument can be selected as needed. The adapter group includes an inlet valve 36, a nozzle 37, a bypass 38, and a working pipeline 39. The inlet valve 36 is connected to the nozzle 37, and the nozzle 37 guides the water flow into the bypass 38 or the working pipeline 39. The lower part of the bypass 38 is the entrance of the standard metal measuring instrument 51. The working pipeline 39 is provided with a locking valve 15, and the working pipeline 39 is connected to the target bin 71 through the locking valve 15 and the filling pipeline 16. The filling pipeline 16 can connect different bins to be calibrated or called target bins 71 without moving the tank truck. Among them, the flow meter group includes multiple flow meters. When selecting a flow meter, the flow meter used is selected by opening the corresponding stop valve.

[0026] In a specific embodiment, the capacity calibration subsystem includes: a volume structure 59, a metering neck 58, an overflow pipe 52, an overflow valve 53, a first liquid level gauge 54, and a second thermometer 55. The volume structure 59 includes an upper cone, a cylinder, and an overflow cover, which constitute the volume body of the standard metal measuring vessel, and can prevent the liquid medium from overflowing or splashing; the metering neck 58 is a regular cylinder, and a uniform liquid level can be formed inside; the overflow pipe 52 is arranged at the middle position outside the metering neck 58 of the standard metal measuring vessel 51, and is vertically distributed with the metering neck, one end of which is connected to the inside of the metering neck, and the other end is connected to the overflow valve 53. When the overflow valve 53 is opened, the water in the measuring neck that exceeds the horizontal position of the overflow pipe 52 can be discharged to the outside of the measuring neck by gravity, that is, the liquid level in the measuring neck is leveled; the overflow valve 53 is arranged on the overflow pipe 52 to control the on-off of the overflow pipe 52; the first liquid level meter 54 is arranged inside the measuring neck 58 of the standard metal measuring vessel 51 to measure the current liquid level value of the standard metal measuring vessel 51, and the calculation module 74 can automatically control the water pump 2 to stop according to the preset liquid level value; the second thermometer 55 is arranged on the outer wall of the standard metal measuring vessel 51 to measure the water temperature value in the standard metal measuring vessel 51.

[0027] In a specific embodiment, Figure 4As shown, it also includes a first tray 56 and a first bracket structure 57. The bottom of the standard metal measuring instrument 51 is fixed on the first tray 56. The first tray 56 is a square design with a side length of 2000 mm. Four first positioning pins 83 are provided on its lower surface near four right angles. A first bracket structure 57 is provided below the first tray 56. The first bracket structure 57 consists of a square plane frame with an upper side length of 2000 mm and four first supporting feet 81 at the bottom. The frame is reliably connected to the first supporting feet 81. Four steel plates with a side length of 200 mm are respectively provided at the four right angles of the frame. The steel plates are reliably connected to the frame. Four first positioning holes 82 are provided on the iron plate at positions corresponding to the four positioning pins of the first tray 56. The inner diameter of the first positioning hole 82 is slightly larger than the outer diameter of the first positioning pin 83. When the first positioning pin 83 of the first tray 56 is inserted into the corresponding first positioning hole 82 of the bracket, the first bracket structure 57 supports the standard metal measuring instrument 51 through the first tray 56.

[0028] In a specific embodiment, Figure 2 , Figure 3 As shown, the weighing and calibration subsystem includes: an electronic scale 61, a second tray 62, a second bracket structure 63, a hydraulic lifting platform 64, and a weight 68. The electronic scale 61 is arranged below the first tray 56, and the upper surface of the electronic scale 61 does not contact the lower surface of the first tray 56 in the initial state; the bottom of the electronic scale 61 is fixed on the second tray 62, and a through hole (reserved hole) 87 is provided in the center of the second tray 62 as a hanging channel for the weight 68 or the weight group; the second tray 62 is designed as a square with a length of 1500mm, and four second positioning pins 86 are evenly distributed near four right angles on its lower surface. A second bracket structure 63 is arranged below the tray, and the second bracket structure 63 is composed of an upper side with a length of 1500mm m square frame and four second supporting legs 84, the frame is reliably connected to the second supporting legs 84, four steel plates with a side length of 150 mm are respectively provided at the four right angles of the frame, the steel plates are reliably connected to the frame, four second positioning holes 85 are respectively provided on the iron plate corresponding to the four positioning pins of the second pallet, the inner diameter of the second positioning hole 85 is slightly larger than the outer diameter of the second positioning pin 86, when the second positioning pin 86 of the pallet is inserted into the corresponding second positioning hole 85 of the bracket, the second bracket structure 63 supports the electronic scale 61 through the second pallet 62; the hydraulic lifting platform 64 is arranged under the second pallet 62, and is used to lift the electronic scale 61 to weigh the water weight inside the standard metal measuring vessel 51 for weighing.

[0029] The hydraulic lifting platform 64 is composed of a load-bearing plate 65, a hydraulic device 66, a third bracket structure 67, etc. The load-bearing plate 65 is a square design with a length of 1000 mm, and its upper surface is usually not in contact with the lower surface of the second tray 62; the load-bearing plate 65 can move up and down under the action of the hydraulic device 66: when the load-bearing plate 65 rises, the upper surface of the load-bearing plate 65 gradually approaches and begins to contact the lower surface of the second tray 62, pushing the second tray 62 to start rising, until the positioning pin of the second tray 62 leaves the corresponding positioning hole for a distance (greater than 20 mm, at this time the upper surface of the electronic scale 61 is not in contact with the lower surface of the first tray 56), and then the position of the load-bearing plate 65 is fixed, and the hydraulic lifting The lowering platform 64 supports the upper electronic scale 61 through the second tray 62 (called the "lifting 1" state); when the load-bearing plate 65 continues to rise, the upper surface of the electronic scale 61 gradually approaches and begins to contact the lower surface of the first tray 56, pushing the first tray 56 to start rising, until the first positioning pin 83 of the first tray 56 leaves the corresponding positioning hole 82 for a distance (greater than 20 mm) and then fixes the position of the load-bearing plate 65. The hydraulic lifting platform 64 supports the upper electronic scale 61 and the standard metal measuring vessel 51 through the second tray 62 and the first tray 56 (called the "lifting 2" state), that is, the state in which the electronic scale 61 weighs the standard metal measuring vessel 51 and the water inside.

[0030] In a specific embodiment, the weight group consists of multiple weights 68, which can be used to trace the electronic scale 61 when placed on a hydraulic lifting platform 64; a hook is provided on the top of the weight 68, and the weight can be hung on the bottom of another weight through the hook to achieve the stacking of multiple weights into a weight group, and the weight 68 is hung on the electronic scale 61 through the hook to load the electronic scale 61, and conversely, removing the weight 68 can achieve the load reduction of the electronic scale 61; the weight 68 can also be hung on the bottom of another weight 68 through the hook to achieve the stacking and use of weights 68.

[0031] In a specific embodiment, the bottom of the standard metal measuring vessel 51 is designed to be flat and circular.

[0032] In a specific embodiment, it also includes: a third thermometer 73 for measuring the water temperature value in the target tank 71 of the gasoline tanker; a second liquid level meter 72 for measuring the water level value in the target tank 71 of the gasoline tanker. All major components and valves of the measurement and control system are connected to the calculation module 74, which is used to measure and control the values ​​of each component, generate control signals, and complete the automatic measurement and control process of the system.

[0033] Working process 1. Storage capacity calibration and control process The warehouse capacity calibration of this capacity measurement and control system can choose flow method, capacity method and measurement method. It mainly uses three warehouse capacity calibration subsystems, namely flow calibration subsystem, capacity calibration subsystem and measurement calibration subsystem, to realize the measurement and control process.

[0034] The tanker truck has been parked, the water level of the external pool 1 is normal, and the equipment and pipelines for the test are ready. The nozzle 37 is initially on the side of the bypass 38, and the bypass drain valve 43 of the standard metal measuring instrument 51 is open; the filling pipeline 16 is in the target bin 71 and fixed by the locking valve 15; the other valves are closed by default; the hydraulic lifting platform 64, the electronic scale 61, and the standard metal measuring instrument 51 are all in the non-contact initial state.

[0035] 1.1 Flow rate method The flow calibration subsystem and related hardware are mainly used. The flow meter to be used is selected from the flow meter group 31 and the corresponding stop valve 32 is opened, and the appropriate switching group is selected and the corresponding water inlet valve 36-a is opened.

[0036] Open the second stop valve 12, the fourth stop valve 21, the fifth stop valve 22, and the water pump 2. The water in the external water pool 1 enters the flow meter pipeline 3 under the action of the water pump 2, and is discharged to the external water pool 1 after passing through the stop valve group 32, the flow meter group 31, the second flow regulating valve 34, the water inlet valve 36-a, the nozzle 37-a, the bypass 38-a, the standard metal measuring instrument 51-a, and the bypass drain valve 43. The instantaneous flow required for calibration is adjusted by the second flow regulating valve 34. After stabilization, the nozzle 37-a is switched to the working pipeline 39-a, and the water flow is introduced into the target tank 71 of the automobile tanker; after a period of time, the nozzle 37-a is switched to the bypass 38-a, and the accumulated flow and water temperature of the flow meter group 31 at this time, the liquid level height and water temperature in the target tank 71, and the values ​​are recorded to complete the current tank capacity calibration; similar operations are performed again to start the next tank capacity calibration until all flow method tank capacity calibration work is completed. The suffix -a means using the ath device or pipeline in the corresponding device or pipeline.

[0037] 1.2 Volumetric method The capacity calibration subsystem and related hardware are mainly used. Select a standard metal measuring vessel 51-b, open the corresponding third stop valve 13, close the bypass drain valve 43-b of the standard metal measuring vessel, and open the overflow valve 53-b.

[0038] Open the first stop valve 11, the third stop valve 13-b, the fourth stop valve 21, the fifth stop valve, and the water pump 2. The water in the external water pool 1 enters the standard metal measuring instrument pipeline 4 under the action of the water pump 2, and flows into the standard metal measuring instrument 51-b through the first flow regulating valve 14 and the third stop valve 13-b. During the process, the instantaneous flow required for calibration can be adjusted by the first flow regulating valve 14. When the liquid level measured by the first liquid level meter 54-b reaches the preset value (the preset value is slightly higher than the horizontal position of the overflow pipe 52-b), the calculation module 74 automatically stops the pump (the fourth stop valve 21, the fifth stop valve 22, and the third stop valve 13-b are closed), and the excess water in the measuring neck of the standard metal measuring vessel 51-b flows out from the overflow pipe 52-b, thereby realizing automatic leveling of the liquid level height, and recording the cumulative capacity and water temperature of the standard metal measuring vessel 51-b; open the drain valve 46-b on the standard metal measuring vessel 51-b, and drain all the water inside it into the target bin 71, and then close the drain valve 46-b, record the liquid level height, water temperature and other values ​​in the target bin 71, and complete the current bin capacity calibration. Perform similar operations again and start the next bin capacity calibration until all volumetric bin capacity calibration work is completed. Among them, the suffix -b means using the bth device or pipeline in the corresponding device or pipeline.

[0039] 1.3 Measurement Mainly use the measurement and calibration subsystem and related hardware. Select an electronic scale 61-c, that is, select the standard metal measuring vessel 51-c above it (as a water container), open the corresponding third stop valve 13-c, close the bypass drain valve 43-c of the standard metal measuring vessel, and open the 53-c overflow valve. Raise the load-bearing plate of the hydraulic lifting platform under the electronic scale, pass through the "lifting 1" state, and then reach the "lifting 2" state and hold it, and clear the electronic scale reading. Among them, the suffix -c means using the cth device or pipeline in the corresponding device or pipeline.

[0040] Open the first stop valve 11, the third stop valve 13-c, the fourth stop valve 21, the fifth stop valve 22, and the water pump 2. The water in the external water pool 1 enters the standard metal measuring instrument pipeline 4 under the action of the water pump 2, and flows into the standard metal measuring instrument 51-c through the first flow regulating valve 14 and the third stop valve 13-c. During the process, the instantaneous flow required for calibration can be adjusted by the first flow regulating valve 14. When the standard metal measuring instrument 51-c has a certain amount of water, the pump is stopped, and the accumulated mass of the electronic scale 61-c is read, or when the liquid level measured by the first liquid level meter 54-c reaches a preset value, the system automatically stops the pump, and the accumulated mass of the electronic scale 61-c is read after the liquid level is automatically leveled. Open the drain valve 46-c on the standard metal measuring instrument 51-c, drain all the water inside it into the target bin 71, and then close the drain valve 46-c, record the liquid level height, water temperature and other values ​​in the target bin 71, and complete the current bin capacity calibration. Perform similar operations again to start the next warehouse capacity calibration until all warehouse capacity calibration work using the measurement method is completed.

[0041] 2. Calibration control process of the warehouse capacity calibration subsystem This capacity measurement and control system makes full use of the hardware of the original three storage capacity calibration subsystems, no longer uses additional adapter groups, and interchanges the functions of the bypass and working pipelines, so that standard metal measuring instruments and electronic scales can be used as both measuring instruments and traceability standards, realizing the function of adaptive calibration of the flow calibration subsystem, capacity calibration subsystem and measurement calibration subsystem at any time.

[0042] The water level of the external water pool 1 is normal, and the equipment and pipelines for the test are ready. The filling pipeline 16 is in the direction of the external water pool 1 and is fixed by the locking valve 15. The nozzle 37 is on the side of the working pipeline 39, and the other valves are in a closed state; the hydraulic lifting platform 64, the electronic scale 61, and the standard metal measuring instrument 51 are all in a non-contact state. Among them, there are m standard metal measuring instruments, electronic scales and their corresponding devices or pipelines, which can be selected and operated according to needs.

[0043] 2.1 Flow calibration subsystem calibration process Use a standard metal measuring instrument 51 or an electronic scale 61 to calibrate the flow point indication error of a flow meter in the flow meter group 31; open the second stop valve 12 and select the flow meter pipeline 3.

[0044] 2.1.1 Using standard metal measuring instruments The flow meter to be calibrated is determined and the corresponding stop valve is opened, and the adapter group to be used is determined and the corresponding water inlet valve 36 is opened, that is, the corresponding standard metal measuring vessel 51 is selected.

[0045] Open the fourth stop valve 21, the fifth stop valve 22, and the water pump 2. The water in the external water pool 1 enters the flow meter pipeline 3 under the action of the water pump 2, and is discharged to the external water pool 1 after passing through the corresponding stop valve 32, the flow meter to be calibrated, the second flow regulating valve 34, the water inlet valve 36, the nozzle 37, and the working pipeline 39. The target instantaneous flow value is adjusted by the second flow regulating valve 34. After the flow stabilizes, the computing module switches the nozzle 37 to the bypass 38, and the water flow is introduced into the standard metal measuring vessel 51. When the liquid level measured by the first liquid level meter 54 in the standard metal measuring vessel 51 reaches the preset value, the computing module switches the nozzle 37 to the working pipeline 39, records the cumulative flow and water temperature of the flow meter to be calibrated, the liquid level and water temperature values ​​of the standard metal measuring vessel 51, opens the bypass drain valve 43 of the standard metal measuring vessel, and drains all the water inside it into the external water pool 1, and then closes the bypass drain valve 43, calculates the flow indication error of the flow meter, and completes this calibration; performs similar operations again and starts the next calibration until all flow meter calibration work is completed.

[0046] 2.1.2 Using electronic scales Determine the flow meter to be calibrated and open the corresponding stop valve, determine the adapter group to be used and open the corresponding water inlet valve 36, that is, select the corresponding electronic scale 61 and the corresponding standard metal measuring vessel 51 (as a water container); raise the load-bearing plate 65 of the hydraulic lifting platform 64, pass through the "lifting 1" state, and then reach the "lifting 2" state and maintain it, and reset the reading of the electronic scale 61 to zero.

[0047] Open the fourth stop valve 21, the fifth stop valve, and the water pump 2. The water in the external water pool 1 enters the flow meter pipeline 3 under the action of the water pump 2, and is discharged to the external water pool 1 after passing through the corresponding stop valve 32, the flow meter to be calibrated, the second flow regulating valve 34, the water inlet valve 36, the nozzle 37, and the working pipeline 39. The target instantaneous flow value is adjusted by the second flow regulating valve 34. After the flow stabilizes, the calculation module 74 switches the nozzle 37 to the bypass 38, and the water flow is introduced into the standard metal measuring vessel 51; when the liquid level measured by the first liquid level meter 54 in the standard metal measuring vessel 51 reaches the preset value, the calculation module 74 switches the nozzle 37 to the working pipeline 39, records the cumulative flow and water temperature of the flow meter to be calibrated, the cumulative mass and water temperature values ​​of the electronic scale 61, opens the bypass drain valve 43 of the standard metal measuring vessel, and drains all the water inside it into the external water pool 1, and then closes the bypass drain valve 43, calculates the flow meter flow indication error, and completes this calibration; performs similar operations again and starts the next calibration until the calibration of the indication errors of all flow meters is completed.

[0048] 2.2 Capacity calibration subsystem calibration process Use an electronic scale 61 to calibrate the nominal capacity of the standard metal measuring vessel 51 above it; open the first stop valve 11, select the standard metal measuring vessel pipeline 4, and keep the standard metal measuring vessel bypass drain valve 43 closed.

[0049] Determine the standard metal measuring instrument 51 to be calibrated and open the corresponding third stop valve 13 (the corresponding electronic scale 61 to be used is also determined), open the overflow valve 53; raise the load-bearing plate 65 of the hydraulic lifting platform 64, pass through the "lifting 1" state, and then reach the "lifting 2" state and maintain it, and reset the reading of the electronic scale 61 to zero.

[0050] Open the first stop valve 11 and select the standard metal measuring instrument pipeline 4; open the fourth stop valve 21, the fifth stop valve, and the water pump 2. The water in the external water pool 1 enters the standard metal measuring instrument pipeline 4 under the action of the water pump 2, passes through the first flow regulating valve 14 and the third stop valve 13, and flows into the standard metal measuring instrument 51 to be calibrated. During the process, the instantaneous flow value of the water flow can be adjusted by the first flow regulating valve 14. When the liquid level measured by the first liquid level meter 54 in the standard metal measuring instrument 51 reaches a preset value, the calculation module 74 automatically stops the pump (the fourth stop valve 21, the fifth stop valve, the third stop valve 13, and the water in the external water pool 1 enters the standard metal measuring instrument pipeline 4 under the action of the water pump 2, passes through the first flow regulating valve 14 and the third stop valve 13, and flows into the standard metal measuring instrument 51 to be calibrated. During the process, the instantaneous flow value of the water flow can be adjusted by the first flow regulating valve 14. When the liquid level height measured by the first liquid level meter 54 in the standard metal measuring instrument 51 reaches a preset value, the calculation module 74 automatically stops the pump (the fourth stop valve 21, the fifth stop valve, the third stop valve Valve 13 is closed), the excess water in the measuring neck of the standard metal measuring vessel 51 flows out from the overflow pipe 52, thereby realizing automatic leveling of the liquid level. After the liquid level is leveled, the cumulative capacity and water temperature of the standard metal measuring vessel 51 and the cumulative mass value of the electronic scale 61 are recorded; the bypass drain valve 43 of the standard metal measuring vessel is opened to drain all the water inside it into the external water pool 1, and then the bypass drain valve 43 is closed, and the indication error of the nominal capacity of the standard metal measuring vessel is calculated to complete this calibration; similar operations are performed again to start the next calibration until the nominal capacity calibration of all standard metal measuring vessels 51 is completed.

[0051] 2.3 Measurement and calibration subsystem calibration process Use a certain weight 68 or a weight group to calibrate the indication error of the electronic scale 61 above it; determine the electronic scale 61 to be calibrated and reset its reading to zero.

[0052] Stack the appropriate weights 68 through hooks to form a weight group, and place them on the load-bearing plate 65 of the hydraulic lifting platform 64. Raise the load-bearing plate 65, and when the upper surface of the uppermost weight 68 of the weight group is close to the bottom of the second tray 62, hang the uppermost weight 68 hook on the electronic scale 61 through the reserved hole of the second tray 62, and then slowly lower the load-bearing plate 65 until the upper surface of the load-bearing plate 65 is more than 20mm away from the lower surface of the lowermost weight. The weight group is in a suspended state as a whole, and the mass of the weight group and the cumulative mass of the electronic scale 61 at this time are recorded, and the mass indication error of the electronic scale is calculated to complete this calibration. Perform similar operations again and start the next calibration until the indication error calibration of all electronic scales 61 is completed.

[0053] The adaptive calibration function of the present invention realizes the on-site adaptive calibration function of major measuring instruments such as flow meters, standard metal measuring instruments, and electronic scales without having to remove them for inspection, and no external traceability standard is required. Calibration can be performed on-site at any time, and the system can be put into use immediately after calibration, ensuring system reliability. The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method section.

[0054] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An on-site multi-calibration adaptive calibration type automobile tanker capacity measurement and control system, which realizes the calibration of the target tank of the automobile tanker, characterized in that: include: A calculation module, an external water tank, a water pump, a flow meter pipeline, a standard metal measuring instrument pipeline, a first stop valve, a second stop valve, a third stop valve, a flow calibration subsystem, a first flow regulating valve, at least one standard metal measuring instrument, at least one capacity calibration subsystem, a first drainage pipeline, a second drainage pipeline, and at least one measurement calibration subsystem. The external water tank is connected to the water pump through a pipeline; the water flow output by the water pump is divided into two streams, which enter the standard metal measuring instrument pipeline and the flow meter pipeline respectively; the water flow of the standard metal measuring instrument pipeline passes through the first stop valve, the first flow regulating valve and the third stop valve in sequence into the bypass, and enters the standard metal measuring instrument through the bypass. Measuring instrument; another water flow passes through the second stop valve and the flow meter pipeline in sequence and enters the flow calibration subsystem; the capacity calibration subsystem or the measurement calibration subsystem calibrates the target warehouse of the automobile tanker based on the water flow of the standard metal measuring instrument, the first drainage pipeline and the second drainage pipeline; the flow calibration subsystem calibrates the target warehouse of the automobile tanker based on another water flow, the standard metal measuring instrument, the first drainage pipeline and the second drainage pipeline; the calculation module is connected with the water pump, each stop valve, each regulating valve, the flow calibration subsystem, the capacity calibration subsystem and the measurement calibration subsystem signal; the number of the standard metal measuring instrument, the capacity calibration subsystem and the measurement calibration subsystem corresponds.

2. The on-site multi-calibration adaptive calibration type automobile tanker capacity measurement and control system according to claim 1 is characterized in that: The first drainage pipeline includes a bypass drainage pipe and a bypass drainage valve; the second drainage pipeline includes a drainage pipe and a drainage valve; and also includes a fourth stop valve and a fifth stop valve, which are arranged before and after the water pump.

3. The on-site multi-calibration adaptive calibration type automobile tanker capacity measurement and control system according to claim 1 is characterized in that: The flow calibration subsystem includes: a flow meter group, a stop valve group, a first thermometer, a second flow regulating valve, a water inlet pipe, and a switching group. The flow meter group includes n flow meters; the stop valve group includes n stop valves, the number of flow meters in the flow meter group corresponds to the number of stop valves in the stop valve group, and the stop valve is arranged before the flow meter to control the selection and abandonment of the corresponding flow meter; the flow meter group is connected with the first thermometer, the second flow regulating valve and the switching group in sequence, the first thermometer measures the temperature value of the water flowing out of the flow group, and the second flow regulating valve controls the instantaneous flow of the water flow; the water inlet pipe is connected with m switching groups, the number of switching groups corresponds to the number of standard metal measuring instruments, the switching group includes a water inlet valve, a nozzle, a bypass, and a working pipeline, the water inlet valve is connected with a nozzle, the nozzle guides the water flow into the bypass or the working pipeline, the lower part of the bypass is the inlet of the standard metal measuring instrument, and the working pipeline is provided with a locking valve, and the working pipeline is connected to the target bin through the locking valve and the filling pipeline.

4. The on-site multi-calibration adaptive calibration type automobile tanker capacity measurement and control system according to claim 1 is characterized in that: The capacity calibration subsystem includes: an overflow pipe, an overflow valve, a first liquid level gauge, and a second thermometer. The overflow pipe is arranged at the middle position outside the measuring neck of the standard metal measuring vessel, and the liquid level in the measuring neck is leveled by gravity; the overflow valve is arranged on the overflow pipe to control the on and off of the overflow pipe; the first liquid level gauge is arranged inside the measuring neck of the standard metal measuring vessel to measure the current liquid level value of the standard metal measuring vessel; the second thermometer is arranged on the outer wall of the standard metal measuring vessel to measure the water temperature value in the standard metal measuring vessel.

5. The on-site multi-calibration adaptive calibration type automobile tanker capacity measurement and control system according to claim 1 is characterized in that: It also includes a first tray and a first bracket structure. The bottom of the standard metal measuring instrument is fixed on the first tray. Four first positioning pins are provided on the lower surface of the first tray. A first bracket structure is provided under the first tray. Four first supporting feet are provided at the lower part of the first bracket structure. Four first positioning holes are provided at the upper part corresponding to the four first positioning pins of the first tray. When the first positioning pins of the first tray are inserted into the first positioning holes of the corresponding brackets, the first bracket structure supports the standard metal measuring instrument through the first tray.

6. The on-site multi-calibration adaptive calibration type automobile tanker capacity measurement and control system according to claim 5 is characterized in that: The weighing and calibration subsystem includes: an electronic scale, a second tray, a second support structure, a hydraulic lifting platform, and weights. The electronic scale is arranged below the first tray, and the upper surface of the electronic scale does not contact the lower surface of the first tray; the bottom of the electronic scale is fixed on the second tray, and a through hole is arranged in the center of the second tray as a weight hanging channel; four second locating pins are installed at the four corners of the second tray, and a second support structure is arranged below. The second support structure is provided with four second supporting feet, and four second locating holes are arranged at the four corners of the upper surface, and the positions are adapted to the four second locating pins of the second tray; the hydraulic lifting platform is arranged below the second tray, and is used to lift the electronic scale to weigh the water weight inside the standard metal measuring vessel for weighing.

7. An on-site multi-calibration adaptive calibration type automobile tanker capacity calibration method, applied to an on-site multi-calibration adaptive calibration type automobile tanker capacity measurement and control system as claimed in any one of claims 1 to 6, characterized in that: The method comprises calibrating the flow calibration subsystem by using the standard metal measuring instrument, determining the flow meter to be calibrated and opening the corresponding stop valve, determining the adapter group to be used and opening the corresponding water inlet valve; Open the second stop valve and select the flow meter pipeline; Open the fourth stop valve, the fifth stop valve and the water pump. The water in the external water pool enters the flow meter pipeline under the action of the water pump, and is discharged to the external water pool after passing through the corresponding stop valve, the flow meter to be calibrated, the second flow regulating valve, the water inlet valve, the nozzle and the working pipeline; adjust the target instantaneous flow value through the second flow regulating valve, and after the flow stabilizes, the calculation module switches the nozzle to the bypass, and the water flow is introduced into the standard metal measuring vessel; when the liquid level measured by the first liquid level gauge in the standard metal measuring vessel reaches the preset value, the calculation module switches the nozzle to the working pipeline, records the cumulative flow and water temperature of the flow meter to be calibrated, the liquid level and water temperature values ​​of the standard metal measuring vessel, opens the bypass drain valve of the standard metal measuring vessel, and drains all the water inside it into the external water pool, then closes the bypass drain valve, calculates the flow indication error of the flow meter, and completes this calibration; repeats the operation and starts the next calibration until all flow meter calibration work is completed.

8. An on-site multi-calibration self-adaptive calibration type automobile tanker capacity calibration method, applied to an on-site multi-calibration self-adaptive calibration type automobile tanker capacity measurement and control system as claimed in any one of claims 1 to 6, characterized in that: The process includes calibrating the flow calibration subsystem by using an electronic scale, determining the flow meter to be calibrated and opening the corresponding stop valve, determining the adapter group to be used and opening the corresponding water inlet valve; raising the load-bearing plate of the hydraulic lifting platform, and the upper surface of the electronic scale begins to contact the lower surface of the first tray until the positioning pin of the first tray leaves the corresponding positioning hole by more than 20 mm, and then fixing the position of the load-bearing plate; the hydraulic lifting platform supports the upper electronic scale and the standard metal measuring instrument through the second tray and the first tray, and clears the reading of the electronic scale to zero; Open the second stop valve and select the flow meter pipeline; Open the fourth stop valve, the fifth stop valve and the water pump. The water in the external water pool enters the flow meter pipeline under the action of the water pump, passes through the corresponding stop valve, the flow meter to be calibrated, the second flow regulating valve, the water inlet valve, the nozzle and the working pipeline, and is discharged to the external water pool; adjust the target instantaneous flow value through the second flow regulating valve, and after the flow stabilizes, the calculation module switches the nozzle to the bypass, and the water flow is introduced into the standard metal measuring vessel; when the liquid level measured by the first liquid level gauge in the standard metal measuring vessel reaches the preset value, the calculation module switches the nozzle to the working pipeline, records the cumulative flow and water temperature of the flow meter to be calibrated, the cumulative mass and water temperature of the electronic scale, opens the bypass drain valve of the standard metal measuring vessel, and drains all the water inside it into the external water pool, then closes the bypass drain valve, calculates the flow meter flow indication error, and completes this calibration; repeats the operation and starts the next calibration until the calibration of the indication error of all flow meters is completed.

9. An on-site multi-calibration adaptive calibration type automobile tanker capacity calibration method, applied to an on-site multi-calibration adaptive calibration type automobile tanker capacity measurement and control system as claimed in any one of claims 1 to 6, characterized in that: The method includes calibrating the capacity calibration subsystem by using an electronic scale; determining the standard metal measuring instrument to be calibrated and opening the corresponding third stop valve, and opening the overflow valve; raising the load-bearing plate of the hydraulic lifting platform, and the upper surface of the electronic scale begins to contact the lower surface of the first tray, and the position of the load-bearing plate is fixed after the positioning pin of the first tray leaves the corresponding positioning hole by more than 20 mm, and the hydraulic lifting platform supports the upper electronic scale and the standard metal measuring instrument through the second tray and the first tray, and clears the corresponding electronic scale reading; Open the first stop valve and select the standard metal measuring pipe; Open the fourth stop valve, the fifth stop valve and the water pump. The water in the external water pool enters the standard metal measuring instrument pipeline under the action of the water pump, passes through the first flow regulating valve and the third stop valve, and flows into the standard metal measuring instrument to be calibrated. In the process, the instantaneous flow value of the water flow is adjusted by the first flow regulating valve. When the liquid level measured by the first liquid level gauge in the standard metal measuring instrument reaches the preset value, the calculation module automatically stops the pump, controls the fourth stop valve, the fifth stop valve and the third stop valve to be closed, and the excess water in the measuring neck of the standard metal measuring instrument flows out from the overflow pipe. After the liquid level is leveled, the cumulative capacity, water temperature and cumulative mass value of the electronic scale of the standard metal measuring instrument are recorded; open the bypass drain valve of the standard metal measuring instrument to drain all the water inside it into the external water pool, and then close the bypass drain valve, calculate the nominal capacity indication error of the standard metal measuring instrument, and complete this calibration; repeat the operation and start the next calibration until the calibration of all standard metal measuring instruments is completed.

10. An on-site multi-calibration self-adaptive calibration type automobile tanker capacity calibration method, applied to an on-site multi-calibration self-adaptive calibration type automobile tanker capacity measurement and control system as claimed in any one of claims 1 to 6, characterized in that: The method includes calibrating the weighing and calibration subsystem with weights; determining the electronic scale to be calibrated and clearing its reading to zero; forming a weight group with single weights, stacking them by hooks, placing them on the load-bearing plate of the hydraulic lifting platform, raising the load-bearing plate, and when the upper surface of the uppermost weight of the weight group is close to the bottom of the second tray, hanging the uppermost weight hook on the electronic scale through the through hole of the second tray, and then slowly lowering the load-bearing plate until the upper surface of the load-bearing plate is more than 20 mm away from the lower surface of the lowermost weight, and the weight group as a whole is in a suspended state, recording the mass of the weight group and the cumulative mass of the electronic scale at this time, calculating the mass indication error of the electronic scale, and completing this calibration; repeating the operation and starting the next calibration until the calibration of all electronic scales is completed.

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