First-class standard metal measuring vessel

Abstract

The utility model relates to a first-class standard metal measuring vessel which structurally comprises a measuring vessel body and supporting legs arranged on the lower portion of the measuring vessel body, an overflow liquid collecting container and an overflow short pipe are arranged at the upper end of the measuring vessel body, and the overflow short pipe is vertically arranged in the overflow liquid collecting container. A container overflow pipe is arranged at the upper part of the overflow collecting container, a container liquid discharge pipe is arranged at the lower part of the overflow collecting container, and a container liquid discharge valve is arranged on the container liquid discharge pipe; the lower end of the measuring vessel main body is connected with a liquid inlet valve and a liquid outlet valve; a liquid level slow-descending container is connected to the upper portion of the overflow short pipe in a penetrating mode, a slow-descending liquid outlet is formed in the bottom of the liquid level slow-descending container, and the upper end of the overflow short pipe is lower than the upper end of the liquid level slow-descending container. Through the liquid level slow-descending container and the flow speed adjusting device, the flowing speed of liquid is effectively controlled, the liquid level is kept stable in the liquid level slow-descending container, and the problem that the liquid level is unstable due to interference of factors such as turbulent flow and vortex in the overflowing liquid collecting container is solved.

Description

Technical Field

[0001] The utility model relates to a measuring instrument, in particular to a first-class standard metal measuring instrument. Background Art

[0002] A standard metal measuring instrument is a relatively high-precision measuring instrument, mainly used as a standard measuring instrument for measuring liquid volume. It is a measuring instrument that must be equipped when measuring high-precision volume. There are three types of standard metal measuring instruments, namely first-class standard metal measuring instruments, second-class standard metal measuring instruments, and third-class standard metal measuring instruments. First-class standard metal measuring instruments are used to verify the accuracy of second-class standard metal measuring instruments and third-class standard metal measuring instruments, so first-class standard metal measuring instruments are the basis of measuring instruments.

[0003] Figure 1 It is an existing first-class standard metal measuring instrument, and the space from the upper end of the upper overflow short tube 1 to the inlet and outlet valves at the lower end is its volume. When the upper overflow collection container 8 is drained, due to the surface tension of the liquid, a convex liquid surface will be formed at the upper end of the overflow short tube 1. In addition, the height of this convex liquid surface will be affected by factors such as turbulence and vortex inside the overflow collection container 8, resulting in inconsistent height of the convex each time the liquid is drained, thereby affecting the overall accuracy of the measuring instrument. Utility Model Content

[0004] The utility model aims to provide a first-class standard metal measuring instrument to solve the problem that the existing measuring instruments have inconsistent liquid levels when discharging liquid due to factors such as liquid surface tension and internal turbulence and vortex in the container, thereby affecting the overall accuracy of the measuring instrument.

[0005] The utility model is implemented as follows: a first-class standard metal measuring instrument, the structure of which includes a measuring instrument body and a supporting leg arranged at the lower part of the measuring instrument body, an overflow collection container and an overflow short tube are arranged at the upper end of the measuring instrument body, the overflow short tube is vertically arranged in the overflow collection container, a container overflow pipe is arranged at the upper part of the overflow collection container, a container discharge pipe is arranged at the lower part of the overflow collection container, and a container discharge valve is arranged on the container discharge pipe; a liquid inlet valve and a liquid discharge valve are connected to the lower end of the measuring instrument body; a liquid level slow-down container is penetrated at the upper part of the overflow short tube, a slow-down liquid outlet is opened at the bottom of the liquid level slow-down container, and the upper end of the overflow short tube is lower than the upper end of the liquid level slow-down container.

[0006] Furthermore, the diameter of the slow-descent liquid outlet is smaller than the diameter of the container liquid discharge pipe.

[0007] Furthermore, a slow-descent liquid outlet pipe matched with the slow-descent liquid outlet is connected to the bottom of the liquid level slow-descent container, and a flow rate regulating device is arranged on the slow-descent liquid outlet pipe.

[0008] Furthermore, the liquid inlet valve and the liquid discharge valve are arranged in a straight line and are inclined at a certain angle.

[0009] Furthermore, the lower portion of the measuring vessel body is a conical portion, and the liquid inlet valve and the liquid discharge valve are parallel to a generatrix of the conical portion.

[0010] Furthermore, a joint pipe is provided at the lower end of the measuring instrument body, and the joint pipe includes a combination valve vertical pipe and a combination valve connecting pipe connected to the lower end of the combination valve vertical pipe; the upper end of the combination valve vertical pipe is connected to the measuring instrument body, and the lower end is connected to the middle part of the combination valve connecting pipe; the combination valve connecting pipe is arranged obliquely, the liquid inlet valve is connected to the upper end of the combination valve connecting pipe, and the liquid discharge valve is connected to the lower end of the combination valve connecting pipe.

[0011] Furthermore, the lower portion of the measuring instrument body is a conical portion, and the combination valve connecting pipe is parallel to a generatrix of the conical portion.

[0012] Furthermore, the measuring instrument body is connected to the joint pipe via a concave and convex flange.

[0013] Furthermore, a liquid level sensor is arranged in the overflow collection container.

[0014] The utility model effectively controls the flow rate of the liquid through the liquid level slow-down container and the flow rate regulating device, so that the liquid level remains stable in the liquid level slow-down container, reducing the problem of unstable liquid level caused by disturbances such as turbulence and vortexes inside the overflow collection container. By controlling the liquid level height and the liquid flow rate, the effect of the liquid level at the upper end of the measuring instrument is achieved, and the overall accuracy of the measuring instrument is improved. The upper half of the measuring instrument and the lower half of the measuring instrument of the utility model are installed through concave and convex flanges and sealing gaskets, which enhances the sealing of the measuring instrument body, effectively prevents liquid leakage in the barrel, and ensures the accuracy of the measuring instrument. The inclined setting of the liquid inlet valve and the liquid discharge valve and the parallel design with the generatrix of the conical part of the upper half of the measuring instrument optimize the flow path of the liquid, reduce the flow resistance, and ensure the accuracy of the measuring instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of an existing metal measuring device.

[0016] Figure 2 It is a structural schematic diagram of the utility model.

[0017] Figure 3 yes Figure 2 A partial enlarged view of the overflow yield container portion.

[0018] Figure 4 It is a structural diagram of concave and convex flanges.

[0019] In the figure: 1, overflow short pipe, 2, measuring instrument body, 3, temperature sensor, 4, upper part of measuring instrument, 5, lower part of measuring instrument, 6, liquid inlet valve, 7, liquid discharge valve, 8, overflow collection container, 9, support leg, 10, container overflow pipe, 11, support foot, 12, liquid level slow-down container, 13, slow-down liquid outlet, 14, slow-down liquid outlet pipe, 15, flow rate regulating device, 16, container discharge pipe, 17, container discharge valve, 18, spirit level, 19, container cover, 20, liquid level sensor, 21, upper flange, 22, lower flange, 23, sealing gasket, 24, combination valve vertical pipe, 25, combination valve connecting pipe. DETAILED DESCRIPTION

[0020] As shown in FIG. 2 , the utility model includes a measuring instrument body 2 and a leg 9 arranged at the lower part of the measuring instrument body 2, and a foot 11 is arranged at the lower end of the leg 9. A liquid inlet valve 6 and a liquid discharge valve 7 are arranged at the lower end of the measuring instrument body 2. The liquid inlet valve 6 and the liquid discharge valve 7 are both solenoid valves. As a basic component of automation for controlling fluids, the solenoid valve is not limited to hydraulic, pneumatic and electromagnetic forms. The appropriate type of solenoid valve can be selected according to specific needs and scenarios to achieve the required fluid control function. The measuring instrument body 2 includes a measuring instrument lower half 5 and a measuring instrument upper half 4 arranged on the measuring instrument lower half 5. The measuring instrument lower half 5 includes a conical portion at the lower part and a cylindrical portion at the upper part. The measuring instrument upper half 4 includes a cylindrical portion at the lower part and an inverted cone portion at the upper part. The cylindrical portion of the measuring instrument upper half 4 has the same diameter as the cylindrical portion of the measuring instrument lower half 5 and is connected. The measuring instrument lower half 5 and the measuring instrument upper half 4 are connected by a flange.

[0021] like Figure 3 As shown, an overflow collection container 8 and an overflow short tube 1 are provided at the upper end of the upper half 4 of the measuring vessel, and the overflow short tube 1 is in the overflow collection container 8. The overflow collection container 8 is funnel-shaped, and a container cover 19 is provided on the overflow collection container 8. A container overflow pipe 10 is provided at the upper part of the overflow collection container 8, and the container overflow pipe 10 is used to exhaust gas when liquid is injected into the measuring vessel body 2 and to discharge liquid exceeding a certain height in the overflow collection container 8. A container discharge pipe 16 is provided at the lower part of the overflow collection container 8, and a container discharge valve 17 is provided on the container discharge pipe 16. The container discharge pipe 16 and the container discharge valve 17 are used to discharge the liquid in the overflow collection container 8, and the container discharge valve 17 is a solenoid valve.

[0022] The overflow short tube 1 is arranged vertically, and a liquid level slow drop container 12 is connected to the upper part of the overflow short tube 1. The upper end of the overflow short tube 1 is in the liquid level slow drop container 12 and lower than the upper end of the liquid level slow drop container 12. A slow drop liquid outlet 13 is opened at the bottom of the liquid level slow drop container 12. The diameter of the slow drop liquid outlet 13 is smaller than the diameter of the container discharge pipe 16, so that the liquid level dropping speed in the liquid level slow drop container 12 is lower than the liquid level dropping speed in the overflow collection container 8, and a flat liquid surface is formed at the upper end of the overflow short tube 1.

[0023] A slow-descent liquid outlet pipe 14 is connected to the bottom of the liquid level slow-descent container 12, which is matched with the slow-descent liquid outlet 13. A flow rate regulating device 15 is arranged on the slow-descent liquid outlet pipe 14. The flow rate regulating device 15 is used to control the speed at which the liquid flows out of the liquid level slow-descent container 12. When the liquid level drops to a position near the upper edge of the overflow short tube 1, the liquid discharge speed is slowed down to form a flat liquid surface at the upper end of the overflow short tube 1, and the measuring instrument is made more accurate. The flow rate regulating device 15 is a flow rate regulating valve, or a device that squeezes or releases the slow-descent liquid outlet pipe 14 to slow down or speed up the liquid level drop speed in the liquid level slow-descent container 12.

[0024] A liquid level sensor 20 is also provided in the overflow collection container 8, and the liquid level sensor 20 can monitor the liquid level in the overflow collection container 8 in real time. When filling the liquid, when the liquid level in the overflow collection container 8 measured by the liquid level sensor 20 reaches a predetermined height, the liquid inlet valve 6 is closed to stop the water inlet. When the overflow collection container 8 is draining, when the liquid level in the overflow collection container 8 measured by the liquid level sensor 20 reaches a predetermined height, the container drain valve 17 is closed to end the draining process.

[0025] A level 18 is also provided on the measuring instrument body 2 to facilitate horizontal placement of the measuring instrument body 2. A temperature sensor 3 for measuring the temperature of the liquid in the measuring instrument body 2 is also provided on the measuring instrument body 2. The level 18 and the temperature sensor 3 are both provided on the upper half 4 of the measuring instrument.

[0026] The inlet valve 6 and the discharge valve 7 are arranged at the lower end of the lower half 5 of the measuring vessel. The inlet valve 6 and the discharge valve 7 are arranged in a straight line and are inclined at a certain angle. The inclination angle of the inlet valve 6 and the discharge valve 7 is parallel to a generatrix of the conical part of the lower half 5 of the measuring vessel to ensure that the liquid can flow along the natural inclination angle when entering and exiting, reduce resistance, and achieve the liquid discharge process and the lower half 5 of the measuring vessel entering the static drip state at the same time.

[0027] like Figure 2 and Figure 4 As shown, a joint pipe is connected to the lower end of the lower half 5 of the measuring instrument, and the lower half 5 of the measuring instrument is connected to the liquid inlet valve 6 and the liquid discharge valve 7 through the joint pipe. The lower half 5 of the measuring instrument and the joint pipe are connected by a concave-convex flange, an upper flange 21 is connected to the lower end of the lower half 5 of the measuring instrument, and a lower flange 22 is connected to the upper end of the joint pipe, and a sealing gasket 23 is arranged between the upper flange 21 and the lower flange 22. In this embodiment, the upper flange 21 is a convex flange, and the lower flange 22 is a concave flange corresponding thereto. According to actual needs and application scenarios, the upper flange 21 can also be set as a concave flange, and the lower flange 22 is a convex flange corresponding thereto. The cooperation of the upper flange 21 and the lower flange 22 can align the pipelines, and the sealing gasket 23 has a good sealing effect, which can avoid liquid leakage and realize the tight connection of the upper and lower flange metal surfaces.

[0028] The joint pipe includes a combination valve vertical pipe 24 and a combination valve connecting pipe 25 connected to the lower end of the combination valve vertical pipe 24. The upper end of the combination valve vertical pipe 24 is connected to the lower half 5 of the measuring instrument, and the lower end of the combination valve vertical pipe 24 is connected to the middle part of the combination valve connecting pipe 25. The combination valve connecting pipe 25 is arranged obliquely, and the upper end of the combination valve connecting pipe 25 is connected to the liquid inlet valve 6, and the lower end of the combination valve connecting pipe 25 is connected to the liquid discharge valve 7. The combination valve connecting pipe 25 is parallel to a generatrix of the conical part of the lower half 5 of the measuring instrument. The lower half 5 of the measuring instrument and the joint pipe are connected by a concave and convex flange. The liquid inlet valve 6 and the liquid discharge valve 7 are both ball valves, and two hemispherical sealing gaskets (not shown in the figure) that wrap the ball are arranged between the valve body and the valve core. The ball valve core is completely wrapped in a sealing structure by applying pressure at both ends of the valve body, and the gap between the sealing structure and the valve body is filled with sealant, which effectively solves the problems of liquid residue and moisture caused by the valve gap.

[0029] When in use, open the liquid inlet valve 6, inject liquid into the vectorizer body 2, and keep the liquid discharge valve 7 and the container discharge valve 17 closed. When the vectorizer body 2 is filled with liquid, continue to inject liquid into the vectorizer body 2, and the liquid will flow into the liquid level slow-down container 12 through the overflow short tube 1. After the liquid level slow-down container 12 is full, the liquid flows from the upper end of the liquid level slow-down container 12 to the overflow collection container 8. When the liquid level in the overflow collection container 8 measured by the liquid level sensor 20 reaches a predetermined height, close the liquid inlet valve 6 and stop water intake. Open the container discharge valve 17, and the liquid in the overflow collection container 8 is discharged through the container discharge pipe 16. When the liquid level in the overflow collection container 8 drops to the vicinity of the liquid level slow-down container 12, the flow rate regulating device 15 on the slow-down outlet pipe 13 of the liquid level slow-down container 12 is opened, so that the liquid level in the liquid level slow-down container 12 slowly drops, so as to use the surface tension of the liquid to achieve the effect of the liquid level at the upper end of the overflow short tube 1 being flush.

Claims

1. A first-class standard metal measuring instrument, comprising a measuring instrument body and a support leg arranged at the lower part of the measuring instrument body, characterized in that: An overflow collecting container and an overflow short tube are arranged at the upper end of the measuring vessel body, the overflow short tube is vertically arranged in the overflow collecting container, a container overflow pipe is arranged at the upper part of the overflow collecting container, a container discharge pipe is arranged at the lower part of the overflow collecting container, and a container discharge valve is arranged on the container discharge pipe; a liquid inlet valve and a liquid discharge valve are connected to the lower end of the measuring vessel body; a liquid level slow-down container is penetrated at the upper part of the overflow short tube, a slow-down liquid outlet is opened at the bottom of the liquid level slow-down container, and the upper end of the overflow short tube is lower than the upper end of the liquid level slow-down container.

2. The first-class standard metal measuring instrument according to claim 1, characterized in that: The diameter of the slow-descent liquid outlet is smaller than the diameter of the container liquid discharge pipe.

3. The first-class standard metal measuring instrument according to claim 1, characterized in that: A slow-descent liquid outlet pipe matched with the slow-descent liquid outlet is connected to the bottom of the liquid level slow-descent container, and a flow rate regulating device is arranged on the slow-descent liquid outlet pipe.

4. The first-class standard metal measuring instrument according to claim 1, characterized in that: The liquid inlet valve and the liquid discharge valve are arranged in a straight line and are tilted at a certain angle.

5. The first-class standard metal measuring instrument according to claim 4, characterized in that: The lower part of the measuring vessel body is a conical part, and the liquid inlet valve and the liquid discharge valve are parallel to a generatrix of the conical part.

6. The first-class standard metal measuring instrument according to claim 1, characterized in that: A joint pipe is arranged at the lower end of the measuring instrument body, and the joint pipe includes a combination valve vertical pipe and a combination valve connecting pipe connected to the lower end of the combination valve vertical pipe; the upper end of the combination valve vertical pipe is connected to the measuring instrument body, and the lower end is connected to the middle part of the combination valve connecting pipe; the combination valve connecting pipe is arranged obliquely, the liquid inlet valve is connected to the upper end of the combination valve connecting pipe, and the liquid discharge valve is connected to the lower end of the combination valve connecting pipe.

7. The first-class standard metal measuring instrument according to claim 6, characterized in that: The lower part of the measuring instrument body is a cone part, and the combination valve connecting pipe is parallel to a generatrix of the cone part.

8. The first-class standard metal measuring instrument according to claim 6, characterized in that: The measuring instrument body is connected to the joint pipe via a concave-convex flange.

9. The first-class standard metal measuring instrument according to claim 1, characterized in that: A liquid level sensor is arranged in the overflow liquid collection container.

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