Multi-flowmeter calibration device

Abstract

This utility model discloses a multi-flowmeter calibration device, comprising multiple plunger cylinders, each containing a plunger connected to a drive mechanism. The bottom of each plunger cylinder has a first interface and a second interface. The first and second interfaces are connected to a fluid source via pipelines, allowing fluid to flow into the first interface and out of the second interface, or vice versa. The flowmeter to be calibrated is connected to the pipeline between the first and second interfaces. Fluid sensors are installed on both the first and second interfaces. This utility model solves the problem that existing calibration devices can only perform one calibration at a time, which significantly prolongs the calibration time and hinders subsequent operations.

Description

Technical Field

[0001] This utility model belongs to the field of aerospace metrology technology, specifically relating to a multi-flowmeter calibration device. Background Technology

[0002] In the aerospace field, flow meters used in core power components such as engines require high accuracy. Therefore, their accuracy needs to be frequently tested to ensure it meets standards. If a problem is found, calibration is necessary. Failure to calibrate will hinder the completion of aerospace missions, necessitating replacement to ensure they can consistently perform demanding and demanding tasks.

[0003] The accuracy calibration of various flow meters is required, which involves a large workload. However, the existing calibration device can only perform one calibration at a time, which greatly prolongs the calibration time and is not conducive to the normal progress of subsequent work. Therefore, there is an urgent need to improve the existing technology. Utility Model Content

[0004] The present invention provides a multi-flowmeter calibration device, which solves the problem that existing calibration devices can only perform calibration once at a time, which greatly prolongs the calibration time and is not conducive to the normal operation of subsequent work.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a multi-flowmeter calibration device, comprising multiple plunger cylinders, each plunger cylinder having a plunger inside, the plunger being connected to a drive mechanism; a first interface and a second interface are provided at the bottom of the plunger cylinder; the first interface and the second interface are connected to a fluid source via pipelines, fluid flows in from the first interface and flows out from the second interface, or flows in from the second interface and flows out from the first interface, the flowmeter to be calibrated is connected to the pipeline between the first interface and the second interface; a fluid sensor is provided on both the first interface and the second interface.

[0006] In a preferred embodiment of this invention, the driving mechanism is a stepper motor; the stepper motor is coupled with the plunger.

[0007] In a preferred embodiment of this invention, the stepper motor is fixed to the plunger via a linear bearing.

[0008] As a preferred technical solution of this utility model, a first bracket is provided at one end of each plunger cylinder.

[0009] As a preferred technical solution of this utility model, a second bracket is provided at the other end of each plunger cylinder.

[0010] As a preferred technical solution of this utility model, it also includes a control system, which is connected to the drive mechanism and the flow sensor.

[0011] As a preferred technical solution of this utility model, the control system is equipped with a display.

[0012] As a preferred technical solution of this utility model, it also includes a base, and the first bracket, the second bracket, the plunger cylinder, the control system and the drive mechanism are disposed on the base.

[0013] As a preferred technical solution of this utility model, a plurality of sealing rings are provided between the plunger and the inner wall of the plunger cylinder.

[0014] In a preferred embodiment of this invention, the number of plunger cylinders is three.

[0015] The beneficial effects of this utility model are as follows: Firstly, this multi-flowmeter calibration device can complete the accuracy calibration of multiple flowmeters simultaneously, greatly improving work efficiency. Secondly, when calibrating only one flowmeter, any piston cylinder can be selected, offering greater selectivity. This multi-flowmeter calibration device has a simple overall structure, low manufacturing cost, and convenient testing and calibration, making it a promising candidate for market promotion and application. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a multi-flowmeter calibration device according to the present invention.

[0017] In the picture: 1. Plunger cylinder; 2. Plunger; 3. First support; 4. Drive mechanism; 5. Monitor; 6. Control system; 7. First interface; 8. Base; 9. Flow meter; 10. Second interface; 11. Second support. Detailed Implementation

[0018] The technical solution of this utility model will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0019] Example 1 like Figure 1As shown, the present invention provides a multi-flowmeter calibration device, comprising multiple plunger cylinders 1, each plunger cylinder 1 having a plunger 2 inside, the plunger 2 being connected to a drive mechanism 4; the bottom of the plunger cylinder 1 is provided with a first interface 7 and a second interface 10; the first interface 7 and the second interface 10 are connected to a fluid source through pipelines, fluid flows in from the first interface 7 and flows out from the second interface 10, or flows in from the second interface 10 and flows out from the first interface 7; the flowmeter 9 to be calibrated is connected to the pipeline between the first interface 7 and the second interface 10; fluid sensors are provided on both the first interface 10 and the second interface 10.

[0020] Example 1: The working principle of a multi-flowmeter calibration device of this utility model is as follows: During operation, the first interface 7 and the second interface 10 are connected to the fluid source via pipelines, and the flow meter 9 to be calibrated is connected to the pipeline. The drive motor 4 moves the corresponding plunger 2, changing the air pressure inside the plunger cylinder 1, causing fluid from the fluid source to flow in through the first interface 7 and out through the second interface 10. The reading displayed on the flow meter 9 is compared with the reading from the fluid sensor to determine if the flow meter 9 has deviated. If a deviation exists, the flow meter is calibrated to compensate for the difference; if no deviation exists, the accuracy of the flow meter 9 is considered acceptable. After calibration, the difference between the flow meter 9 reading and the fluid sensor reading is compared again until the flow meter 9 reading meets the requirements. At this point, the accuracy of the flow meter is finally calibrated.

[0021] This utility model provides a multi-flowmeter calibration device. On the one hand, it can complete the accuracy calibration of multiple flowmeters at once, greatly improving work efficiency. On the other hand, when only one flowmeter needs to be calibrated, any piston cylinder can be selected, providing greater selectivity.

[0022] This utility model discloses a multi-flowmeter calibration device with a simple overall structure, low manufacturing cost, and convenient testing and calibration, which has good prospects for market promotion and application.

[0023] Example 2 like Figure 1 As shown in Embodiment 1, Embodiment 2, a multi-flowmeter calibration device of this utility model, also includes multiple plunger cylinders 1, each plunger cylinder 1 having a plunger 2 inside, the plunger 2 being connected to a drive mechanism 4; the bottom of the plunger cylinder 1 is provided with a first interface 7 and a second interface 10; the first interface 7 and the second interface 10 are connected to a fluid source through pipelines, fluid flows in from the first interface 7 and flows out from the second interface 10, or flows in from the second interface 10 and flows out from the first interface 7; the flowmeter 9 to be calibrated is connected to the pipeline between the first interface 7 and the second interface 10; fluid sensors are provided on both the first interface 10 and the second interface 10.

[0024] Unlike Embodiment 1, in Embodiment 2 of this utility model, the drive mechanism 4 is a stepper motor; the stepper motor and the plunger 2 are driven together for precise control.

[0025] Example 2: The working principle of a multi-flowmeter calibration device of this utility model is as follows: During operation, the first interface 7 and the second interface 10 are connected to the fluid source via pipelines, and the flow meter 9 to be calibrated is connected to the pipeline. The drive motor 4 moves the corresponding plunger 2, changing the air pressure inside the plunger cylinder 1, causing fluid from the fluid source to flow in through the first interface 7 and out through the second interface 10. The reading displayed on the flow meter 9 is compared with the reading from the fluid sensor to determine if the flow meter 9 has deviated. If a deviation exists, the flow meter is calibrated to compensate for the difference; if no deviation exists, the accuracy of the flow meter 9 is considered acceptable. After calibration, the difference between the flow meter 9 reading and the fluid sensor reading is compared again until the flow meter 9 reading meets the requirements. At this point, the accuracy of the flow meter is finally calibrated.

[0026] This utility model provides a multi-flowmeter calibration device. On the one hand, it can complete the accuracy calibration of multiple flowmeters at once, greatly improving work efficiency. On the other hand, when only one flowmeter needs to be calibrated, any piston cylinder can be selected, providing greater selectivity.

[0027] This utility model discloses a multi-flowmeter calibration device with a simple overall structure, low manufacturing cost, and convenient testing and calibration, which has good prospects for market promotion and application.

[0028] Example 3 like Figure 1 As shown in Embodiment 2, Embodiment 3, a multi-flowmeter calibration device of this utility model, also includes multiple plunger cylinders 1, each plunger cylinder 1 containing a plunger 2, which is connected to a drive mechanism 4. The bottom of each plunger cylinder 1 has a first interface 7 and a second interface 10. The first interface 7 and the second interface 10 are connected to a fluid source via pipelines. Fluid flows into the first interface 7 and out of the second interface 10, or vice versa. The flowmeter 9 to be calibrated is connected to the pipeline between the first interface 7 and the second interface 10. Fluid sensors are installed on both the first and second interfaces 10. The drive mechanism 4 is a stepper motor; the stepper motor is driven by the plunger 2.

[0029] Unlike Embodiment 2, in Embodiment 3, a multi-flowmeter calibration device of this utility model, a stepper motor is fixed to the plunger 2 via a linear bearing, which can convert rotational motion into linear motion.

[0030] Example 3: The working principle of a multi-flowmeter calibration device of this utility model is as follows: During operation, the first interface 7 and the second interface 10 are connected to the fluid source via pipelines, and the flow meter 9 to be calibrated is connected to the pipeline. The drive motor 4 moves the corresponding plunger 2, changing the air pressure inside the plunger cylinder 1, causing fluid from the fluid source to flow in through the first interface 7 and out through the second interface 10. The reading displayed on the flow meter 9 is compared with the reading from the fluid sensor to determine if the flow meter 9 has deviated. If a deviation exists, the flow meter is calibrated to compensate for the difference; if no deviation exists, the accuracy of the flow meter 9 is considered acceptable. After calibration, the difference between the flow meter 9 reading and the fluid sensor reading is compared again until the flow meter 9 reading meets the requirements. At this point, the accuracy of the flow meter is finally calibrated.

[0031] This utility model provides a multi-flowmeter calibration device. On the one hand, it can complete the accuracy calibration of multiple flowmeters at once, greatly improving work efficiency. On the other hand, when only one flowmeter needs to be calibrated, any piston cylinder can be selected, providing greater selectivity.

[0032] This utility model discloses a multi-flowmeter calibration device with a simple overall structure, low manufacturing cost, and convenient testing and calibration, which has good prospects for market promotion and application.

[0033] Example 4 like Figure 1 As shown in Embodiment 3, Embodiment 4, a multi-flowmeter calibration device of this utility model, also includes multiple plunger cylinders 1, each plunger cylinder 1 containing a plunger 2, which is connected to a drive mechanism 4. The bottom of each plunger cylinder 1 has a first interface 7 and a second interface 10. The first interface 7 and the second interface 10 are connected to a fluid source via pipelines. Fluid flows into the first interface 7 and out of the second interface 10, or vice versa. The flowmeter 9 to be calibrated is connected to the pipeline between the first interface 7 and the second interface 10. Fluid sensors are installed on both the first and second interfaces 10. The drive mechanism 4 is a stepper motor; the stepper motor is driven by the plunger 2. The stepper motor is fixed to the plunger 2 via a linear bearing.

[0034] Unlike Embodiment 3, in Embodiment 4, a multi-flowmeter calibration device of this utility model has a first support 3 at one end of each plunger cylinder 1 and a second support 11 at the other end of each plunger cylinder 1, so that the plunger cylinder 1 is stably supported by the first support 3 and the second support 11.

[0035] Example 4: The working principle of a multi-flowmeter calibration device of this utility model is as follows: During operation, the first interface 7 and the second interface 10 are connected to the fluid source via pipelines, and the flow meter 9 to be calibrated is connected to the pipeline. The drive motor 4 moves the corresponding plunger 2, changing the air pressure inside the plunger cylinder 1, causing fluid from the fluid source to flow in through the first interface 7 and out through the second interface 10. The reading displayed on the flow meter 9 is compared with the reading from the fluid sensor to determine if the flow meter 9 has deviated. If a deviation exists, the flow meter is calibrated to compensate for the difference; if no deviation exists, the accuracy of the flow meter 9 is considered acceptable. After calibration, the difference between the flow meter 9 reading and the fluid sensor reading is compared again until the flow meter 9 reading meets the requirements. At this point, the accuracy of the flow meter is finally calibrated.

[0036] This utility model provides a multi-flowmeter calibration device. On the one hand, it can complete the accuracy calibration of multiple flowmeters at once, greatly improving work efficiency. On the other hand, when only one flowmeter needs to be calibrated, any piston cylinder can be selected, providing greater selectivity.

[0037] This utility model discloses a multi-flowmeter calibration device with a simple overall structure, low manufacturing cost, and convenient testing and calibration, which has good prospects for market promotion and application.

[0038] Example 5 like Figure 1 As shown in Embodiment 4, Embodiment 5, a multi-flowmeter calibration device of this utility model, also includes multiple plunger cylinders 1, each plunger cylinder 1 containing a plunger 2, which is connected to a drive mechanism 4. The bottom of each plunger cylinder 1 has a first interface 7 and a second interface 10. The first interface 7 and the second interface 10 are connected to a fluid source via pipelines. Fluid flows into the first interface 7 and out of the second interface 10, or vice versa. The flowmeter 9 to be calibrated is connected to the pipeline between the first interface 7 and the second interface 10. Fluid sensors are installed on both the first and second interfaces 10. The drive mechanism 4 is a stepper motor; the stepper motor is driven by the plunger 2. The stepper motor is fixed to the plunger 2 via a linear bearing. One end of each plunger cylinder 1 has a first support 3, and the other end of each plunger cylinder 1 has a second support 11.

[0039] Unlike Embodiment 4, Embodiment 5 of this utility model, a multi-flowmeter calibration device, further includes a control system 6, which is connected to the drive mechanism 4 and the flow sensor. The control system 6 is equipped with a display 5. The control system 6 can control the movement of the drive mechanism 4 and also identify the readings of the flow sensor, displaying them on the display.

[0040] Example 5: The working principle of a multi-flowmeter calibration device of this utility model is as follows: During operation, the first interface 7 and the second interface 10 are connected to the fluid source via pipelines, and the flow meter 9 to be calibrated is connected to the pipeline. The drive motor 4 moves the corresponding plunger 2, changing the air pressure inside the plunger cylinder 1, causing fluid from the fluid source to flow in through the first interface 7 and out through the second interface 10. The reading displayed on the flow meter 9 is compared with the reading from the fluid sensor to determine if the flow meter 9 has deviated. If a deviation exists, the flow meter is calibrated to compensate for the difference; if no deviation exists, the accuracy of the flow meter 9 is considered acceptable. After calibration, the difference between the flow meter 9 reading and the fluid sensor reading is compared again until the flow meter 9 reading meets the requirements. At this point, the accuracy of the flow meter is finally calibrated.

[0041] This utility model provides a multi-flowmeter calibration device. On the one hand, it can complete the accuracy calibration of multiple flowmeters at once, greatly improving work efficiency. On the other hand, when only one flowmeter needs to be calibrated, any piston cylinder can be selected, providing greater selectivity.

[0042] This utility model discloses a multi-flowmeter calibration device with a simple overall structure, low manufacturing cost, and convenient testing and calibration, which has good prospects for market promotion and application.

[0043] Example 6 like Figure 1 As shown in Embodiment 5, Embodiment 6, a multi-flowmeter calibration device of this utility model, also includes multiple plunger cylinders 1, each plunger cylinder 1 containing a plunger 2, which is connected to a drive mechanism 4. The bottom of each plunger cylinder 1 has a first interface 7 and a second interface 10. The first interface 7 and the second interface 10 are connected to a fluid source via pipelines. Fluid flows into the first interface 7 and out of the second interface 10, or vice versa. The flowmeter 9 to be calibrated is connected to the pipeline between the first interface 7 and the second interface 10. Fluid sensors are installed on both the first and second interfaces 10. The drive mechanism 4 is a stepper motor; the stepper motor is driven by the plunger 2. The stepper motor is fixed to the plunger 2 via a linear bearing. One end of each plunger cylinder 1 has a first support 3, and the other end of each plunger cylinder 1 has a second support 11. A control system 6 is also included, which is connected to the drive mechanism 4 and the flow sensor. A display 5 is installed on the control system 6.

[0044] Unlike Embodiment 5, Embodiment 6 of this utility model, a multi-flowmeter calibration device, further includes a base 8, a first support 3, a second support 11, a plunger cylinder 2, a control system 6, and a drive mechanism 4 mounted on the base 8. Multiple sealing rings are provided between the inner walls of the plunger 2 and the plunger cylinder 1 to prevent liquid leakage.

[0045] Example 6: The working principle of a multi-flowmeter calibration device of this utility model is as follows: During operation, the first interface 7 and the second interface 10 are connected to the fluid source via pipelines, and the flow meter 9 to be calibrated is connected to the pipeline. The drive motor 4 moves the corresponding plunger 2, changing the air pressure inside the plunger cylinder 1, causing fluid from the fluid source to flow in through the first interface 7 and out through the second interface 10. The reading displayed on the flow meter 9 is compared with the reading from the fluid sensor to determine if the flow meter 9 has deviated. If a deviation exists, the flow meter is calibrated to compensate for the difference; if no deviation exists, the accuracy of the flow meter 9 is considered acceptable. After calibration, the difference between the flow meter 9 reading and the fluid sensor reading is compared again until the flow meter 9 reading meets the requirements. At this point, the accuracy of the flow meter is finally calibrated.

[0046] This utility model provides a multi-flowmeter calibration device. On the one hand, it can complete the accuracy calibration of multiple flowmeters at once, greatly improving work efficiency. On the other hand, when only one flowmeter needs to be calibrated, any piston cylinder can be selected, providing greater selectivity.

[0047] This utility model discloses a multi-flowmeter calibration device with a simple overall structure, low manufacturing cost, and convenient testing and calibration, which has good prospects for market promotion and application.

Claims

1. A multi-flowmeter calibration apparatus, characterized by, It includes multiple plunger cylinders (1), each plunger cylinder (1) is provided with a plunger (2), the plunger (2) is connected to the drive mechanism (4); the bottom of the plunger cylinder (1) is provided with a first interface (7) and a second interface (10); the first interface (7) and the second interface (10) are connected to a fluid source through pipelines, the fluid flows in from the first interface (7) and flows out from the second interface (10), or flows in from the second interface (10) and flows out from the first interface (7), the flow meter (9) to be calibrated is connected to the pipeline between the first interface (7) and the second interface (10); a fluid sensor is provided on both the first interface (7) and the second interface (10).

2. The multi-flowmeter calibration device of claim 1, wherein, The drive mechanism (4) is a stepper motor; the stepper motor is in transmission cooperation with the plunger (2).

3. The multi-flowmeter calibration device of claim 2, wherein, The stepper motor is fixed to the plunger (2) by a linear bearing.

4. The multi-flowmeter calibration apparatus of claim 3, wherein, Each of the plunger cylinders (1) is provided with a first bracket (3) at one end.

5. The multi-flowmeter calibration device of claim 4, wherein, Each of the plunger cylinders (1) is provided with a second bracket (11) at the other end.

6. The multi-flowmeter calibration apparatus of claim 5, wherein, It also includes a control system (6), which is connected to the drive mechanism (4) and the flow sensor.

7. The multi-flowmeter calibration device of claim 6, wherein, The control system (6) is equipped with a display (5).

8. The multi-flowmeter calibration apparatus of claim 7, wherein, It also includes a base (8), on which the first bracket (3), the second bracket (11), the plunger cylinder (1), the control system (6) and the drive mechanism (4) are mounted.

9. The multi-flowmeter calibration device according to claim 8, characterized in that, Multiple sealing rings are provided between the inner walls of the plunger (2) and the plunger cylinder (1).

10. The multi-flowmeter calibration apparatus of claim 9, wherein, The number of plunger cylinders (1) is three.

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