A metering tank capacity verification device

Abstract

The utility model relates to the technical field of measurement and detection, concretely to a kind of measurement tank capacity verification device, including base, the top of base is provided with the weighing device for measuring the mass of measurement tank, the base is provided with the pedestal for bearing measurement tank on the weighing device, the outside of base is provided with positioning mechanism and capacity verification mechanism, the positioning mechanism, make hydraulic cylinder drive two symmetrically arranged clamping plates simultaneously towards center movement, firmly clamped from both sides measurement tank, further solved the problem of "inconvenient field use" and "limited applicability" of traditional structure, the positioning mechanism compact structure, action is quick, without complex tool or manual tightening, can quickly adapt to different diameter measurement tank, effectively improve the efficiency of on-site verification;The capacity verification mechanism and weighing device effectively suppress liquid flow impact and fluctuation by flow control device and current tube, and double verification container alternating work mode improves efficiency and allows real-time data comparison.

Description

Technical Field

[0001] This utility model relates to the field of metrology and testing technology, specifically to a device for verifying the capacity of a measuring tank. Background Technology

[0002] Measuring vessels are widely used in trade settlement and production process control in industries such as petroleum, chemical, and food. The accuracy of their capacity is directly related to trade fairness and production quality. Currently, the capacity verification of measuring vessels mainly adopts manual measurement methods, which have problems such as low efficiency, large errors, and high labor intensity.

[0003] Existing capacity verification devices are often inconvenient to use on-site due to their complex structures. Some devices are also significantly affected by environmental factors (such as temperature and airflow) during the verification process. Furthermore, some devices cannot simultaneously meet the verification requirements of different capacities and types of metering vessels. Therefore, a new capacity verification device for metering vessels is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a device for verifying the capacity of a measuring tank, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a measuring tank capacity verification device, comprising a base, a weighing device for measuring the mass of the measuring tank being provided on the top of the base, a base for supporting the measuring tank being provided on the weighing device, and a positioning mechanism and a capacity verification mechanism being provided on the outer side of the base. The positioning mechanism includes a connecting frame and two clamping frames, a clamping plate, a connecting rod and a collar. The clamping frames are rotatably connected to the inner side of the connecting frame, the clamping plates are fixedly connected to the clamping surfaces of the clamping frames, the collar is slidably connected to the outer side of the clamping frames, and the connecting rod is fixedly connected to one side of the collar.

[0006] Preferably, the positioning mechanism further includes a fixed frame, a hydraulic cylinder, and a movable frame; The fixed frame is fixedly connected to the outside of the base, the hydraulic cylinder is fixedly installed on one side of the fixed frame, and the movable frame is fixedly connected to the output end of the hydraulic cylinder.

[0007] Preferably, one end of the connecting rod is fixedly connected to the movable frame, and the output end of the hydraulic cylinder after being energized is used to drive the movable frame to move.

[0008] Preferably, the movable frame in the moving state is used to drive the clamping frame to move via the connecting rod, and the clamping frame in the moving state is used to drive the clamping plate to move.

[0009] Preferably, the clamping plates have an arc-shaped structure, and the two clamping plates that move close to each other are used to clamp and position the metering tank.

[0010] Preferably, the capacity verification mechanism includes a water storage container, a flow control device, and two verification containers connected by pipelines; Both the water storage container and the calibration container are located on one side of the base, and the flow control device is located on the water storage container.

[0011] Preferably, the calibration container is connected to the water inlet pipe via a reversing device, and the output end of the calibration container is connected to the water outlet pipe, which injects the medium into the calibration tank through a flow equalization pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the positioning mechanism enables the hydraulic cylinder to drive two symmetrically arranged clamping plates to move towards the center simultaneously, firmly clamping the measuring tank from both sides, thereby solving the problems of "inconvenient on-site use" and "limited applicability" of the traditional structure. The positioning mechanism has a compact structure, fast action, and does not require complicated tools or manual tightening. It can quickly adapt to measuring tanks of different diameters, effectively improving the efficiency of on-site verification. This capacity calibration mechanism and weighing device effectively suppress liquid flow impact and fluctuation through flow control and flow equalization pipes, reducing interference from weighing and liquid level readings. The alternating working mode of the dual calibration containers improves efficiency and allows for real-time data comparison. Real-time temperature monitoring and density correction eliminate systematic errors caused by water temperature changes. The entire water injection and measurement process is highly automated, greatly reducing human operation errors. Thus, the liquid circuit design ensures the accuracy of the measurement, and the alternating weighing and temperature compensation ensure the efficiency and precision of the measurement. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of the present utility model; Figure 2 This is a schematic diagram of the capacity verification mechanism of this utility model; Figure 3 This is a schematic diagram of the positioning mechanism of this utility model; Figure 4 This utility model Figure 3 A schematic diagram of structure A in the diagram.

[0014] In the diagram: 1. Base; 2. Weighing device; 3. Base; 4. Positioning mechanism; 401. Fixing frame; 402. Connecting frame; 403. Clamping frame; 404. Clamping plate; 405. Hydraulic cylinder; 406. Moving frame; 407. Connecting rod; 408. Collar; 5. Capacity verification mechanism; 501. Water storage container; 502. Flow control device; 503. Verification container. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1-4 This utility model provides a technical solution for a measuring tank capacity verification device: a measuring tank capacity verification device includes a base 1, a weighing device 2 for measuring the mass of the measuring tank is provided on the top of the base 1, a base 3 for supporting the measuring tank is provided on the weighing device 2, and a positioning mechanism 4 and a capacity verification mechanism 5 are provided on the outside of the base 1. The positioning mechanism 4 includes a connecting frame 402, two clamping frames 403, a clamping plate 404, a connecting rod 407, and a collar 408. The clamping frames 403 are rotatably connected to the inner side of the connecting frame 402, the clamping plate 404 is fixedly connected to the clamping surface of the clamping frame 403, the collar 408 is slidably connected to the outside of the clamping frame 403, and the connecting rod 407 is fixedly connected to one side of the collar 408. The positioning mechanism 4 also includes a fixed frame 401, a hydraulic cylinder 405, and a movable frame 406; The fixed frame 401 is fixedly connected to the outside of the base 1, the hydraulic cylinder 405 is fixedly installed on one side of the fixed frame 401, and the movable frame 406 is fixedly connected to the output end of the hydraulic cylinder 405. The capacity calibration mechanism 5 includes a water storage container 501, a flow control device 502, and two calibration containers 503 connected by pipelines. Both the water storage container 501 and the calibration container 503 are located on one side of the base 1, and the flow control device 502 is located on the water storage container 501. Working principle: First, the operator places the measuring tank to be inspected on the base 3 and then starts the hydraulic cylinder 405. The output end of the hydraulic cylinder 405 extends and pushes the moving frame 406 forward (towards the measuring tank). The moving frame 406 pushes the collar 408 to slide along the clamping frame 403 through the connecting rod 407. The middle part of the clamping frame 403 is rotatably connected to the connecting frame 402 through the rotating shaft, forming a lever. When the collar 408 is pushed towards the connecting frame 402, it presses the lower part of the clamping frame 403. According to the lever principle, the upper part of the clamping frame 403 (i.e., the end where the clamping plate 404 is installed) will close towards the center. The two symmetrically arranged clamping plates 404 move towards the center at the same time, firmly clamping the measuring tank from both sides. The hydraulic system can provide a stable and adjustable clamping force, which can ensure the stability of large measuring tanks without causing excessive compression to small thin-walled tanks. Water (or other testing medium) in storage container 501 flows out under gravity or pump pressure. The water first passes through flow control device 502, whose core function is pressure reduction and flow stabilization. Through an internal pressure-reducing mesh or similar structure, it transforms the unstable incoming flow into a stable, non-pulsating laminar flow, which is crucial for ensuring accurate subsequent weighing. Turbulent or pulsating water flow generates dynamic impact forces, severely interfering with the reading stability of weighing device 2. The stabilized water flow is alternately guided to two testing containers 503 through pipelines and a reversing device. While one testing container 503 is receiving water, the other is emptying and weighing. Each testing container 503 is equipped with a high-precision load cell at its bottom. When water is injected into one testing container 503, the load cell records the mass increase value in real time. This dual-container alternating operation mode achieves continuous and uninterrupted injection of the testing medium, avoiding... This eliminates the inefficiency caused by emptying and waiting for stabilization in single-container mode, significantly improving the verification speed. After weighing, the verification container 503 injects water into the fixed measuring tank under test through its outlet pipe via a flow equalization pipe. The function of the flow equalization pipe is to further disperse the water flow at its outlet, injecting it into the bottom of the measuring tank under test in a very gentle manner, minimizing liquid surface fluctuations and the generation of air bubbles, thereby ensuring the accuracy of subsequent liquid level readings. During this process, the weighing device 2 monitors and records the total mass change of the measuring tank under test in real time. At the same time, the temperature sensor in the system (integrated in the pipeline or container) measures the water temperature in real time. Then, by injecting a known volume of water into the measuring tank under test one by one and recording the liquid level height after each injection (which can be read manually or automatically through an additional liquid level gauge), a table or curve corresponding to the capacity and liquid level height of the measuring tank under test can be plotted, completing the entire verification process.

[0017] Please refer to this carefully. Figure 3 One end of the connecting rod 407 is fixedly connected to the movable frame 406, and the output end of the hydraulic cylinder 405 after being energized is used to drive the movable frame 406 to move.

[0018] In this embodiment: Hydraulic cylinder 405 is activated, the output end of hydraulic cylinder 405 extends, and pushes the moving frame 406 forward (towards the metering tank).

[0019] Please refer to this carefully. Figure 3 The movable frame 406 in the moving state is used to drive the clamping frame 403 to move via the connecting rod 407, and the clamping frame 403 in the moving state is used to drive the clamping plate 404 to move.

[0020] In this embodiment: the movable frame 406 pushes the collar 408 to slide along the clamping frame 403 through the connecting rod 407. The middle part of the clamping frame 403 is rotatably connected to the connecting frame 402 through the rotating shaft, forming a lever. When the collar 408 is pushed towards the connecting frame 402, it presses the lower part of the clamping frame 403. According to the lever principle, the upper part of the clamping frame 403 (i.e. the end where the clamping plate 404 is installed) will close towards the center.

[0021] Please refer to this carefully. Figure 2 The clamping plate 404 has an arc-shaped structure, and the two clamping plates 404 that move close to each other are used to clamp and position the metering tank.

[0022] In this embodiment: Since the clamping plate 404 is designed with an arc-shaped structure, its concave surface can fit well against the outer wall of the cylindrical or near-cylindrical metering tank, increasing the contact area, achieving uniform force application, and avoiding local stress damage to the tank.

[0023] Please refer to this carefully. Figure 2 The calibration container 503 is connected to the inlet pipe via a reversing device. The output end of the calibration container 503 is connected to the outlet pipe, and the outlet pipe injects the medium into the metering tank under test through the flow equalization pipe.

[0024] In this embodiment: the weighed calibration container 503 injects water into the fixed measuring tank through its outlet pipe via the flow equalization pipe. The function of the flow equalization pipe is to further disperse the water flow at its outlet and inject it into the bottom of the tank in a very gentle manner, minimizing liquid surface fluctuations and the generation of air bubbles, thereby ensuring the accuracy of subsequent liquid level readings.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

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