Acid discharge metering system

Abstract

The utility model relates to an acid discharge metering system. The acid discharge metering system comprises an acid discharge pipe arranged between an acid storage tank and an acid vehicle; the flow meter is mounted on the acid discharging pipe; the electric switch valve is mounted on the acid discharge pipe and is positioned at the downstream of the flow meter; the electric control valve is mounted on the acid discharge pipe and is positioned at the downstream of the electric switch valve; the flow meter, the electric switch valve and the electric adjusting valve are all electrically connected with a controller. The automatic acid discharge metering system composed of the acid storage tank, the acid discharge pipe, the flow meter, the electric switch valve, the electric control valve and the controller is used for replacing a manual acid discharge metering mode, the electric switch valve and the electric control valve form a coarse adjustment and fine adjustment control mode, and accurate control over the acid discharge amount is ensured; the control precision and stability of the acid discharge metering system are improved through the cooperative working mode, so that the acid discharge error is reduced, and overload or air loss of an acid vehicle is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metering, in particular to an acid discharging metering system. BACKGROUND

[0002] The traditional acid discharging and loading mode of the sulfuric acid plant of Chuxiong Central Yunnan Nonferrous Metal Co., Ltd. is as follows: after the acid loading truck is positioned and the acid loading conditions are met, the acid tank manual acid discharging valve is opened, the acid level change of the acid loading truck is observed by manual observation, the end point of the acid discharging is judged, and the acid discharging amount is controlled by manual adjustment of the acid discharging valve or the acid discharging is cut off.

[0003] However, manual acid discharging relies on experience and has a large error, which is easy to cause overloading or empty loss of the acid loading truck. CONTENT OF THE UTILITY MODEL

[0004] In order to solve or partially solve the problems in the related art, the present application provides an acid discharging metering system.

[0005] In order to achieve the above-mentioned purpose, the present application is realized by the following technical scheme:

[0006] An acid discharging metering system comprises an acid storage tank and an acid loading truck, and further comprises:

[0007] An acid discharging pipe is arranged between the acid storage tank and the acid loading truck.

[0008] A flow meter is installed on the acid discharging pipe.

[0009] An electric on-off valve is installed on the acid discharging pipe and located downstream of the flow meter.

[0010] An electric regulating valve is installed on the acid discharging pipe and located downstream of the electric on-off valve.

[0011] The flow meter, the electric on-off valve and the electric regulating valve are electrically connected with a controller.

[0012] Optionally, a thermal resistance is installed upstream of the flow meter.

[0013] Optionally, the acid discharging pipe is connected with the output end of the acid storage tank through a first flange.

[0014] Optionally, the flow meter is installed on the acid discharging pipe through a second flange at both ends.

[0015] Optionally, the electric on-off valve is installed on the acid discharging pipe through a third flange at both ends.

[0016] Optionally, the electric regulating valve is installed on the acid discharging pipe through a fourth flange at both ends.

[0017] Optionally, the acid discharging pipe adopts a carbon steel pipe, and a fluoroplastic hose is used at the connection position of the acid discharging pipe and the acid loading truck.

[0018] The application has the beneficial effects that the automatic acid releasing metering system composed of the acid storage tank, the acid releasing pipe, the flow meter, the electric on-off valve, the electric regulating valve and the controller replaces the manual acid releasing metering mode, the control mode of "coarse adjustment + fine adjustment" is formed by the electric on-off valve and the electric regulating valve, the electric on-off valve is responsible for the rapid on-off of the acid liquid, the start-stop control of the acid releasing is realized, the electric regulating valve is responsible for the fine adjustment of the flow during the acid releasing, the accurate control of the acid releasing amount is ensured, the control precision and stability of the acid releasing metering system are improved through the cooperative working mode, so as to reduce the acid releasing error and avoid the overload or empty loss of the acid vehicle.

[0019] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the application. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which like reference characters refer to like parts throughout the several views, and in which:

[0021] Figure 1 is a structural schematic diagram of the acid releasing metering system shown in the embodiments of the application;

[0022] Figure 2 is a control block diagram of the acid releasing metering system shown in the embodiments of the application

[0023] Reference signs: 1 acid storage tank, 2 acid releasing pipe, 3 flow meter, 4 electric on-off valve, 5 electric regulating valve, 6 thermal resistance, 7 first flange, 8 second flange, 9 third flange, 10 fourth flange. DETAILED DESCRIPTION

[0024] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0025] In addition, the terms "first", "second", etc. are used herein only to describe different instances, and do not imply or suggest relative importance or a number of the technical features indicated. Thus, the features defined with "first", "second" can include at least one of the features explicitly or implicitly. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0026] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected or can communicate with each other; can be directly connected, or can be indirectly connected through an intermediate medium, or can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood as the specific situation.

[0027] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0028] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present description, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present description and the features of different embodiments or examples, without contradiction.

[0029] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

[0030] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0031] To make the objectives, technical solutions, and beneficial effects of this application clearer, the preferred embodiments of this application will be described in detail below with reference to the accompanying drawings, so as to facilitate understanding by those skilled in the art.

[0032] Example 1:

[0033] See Figure 1 and Figure 2 An acid release metering system includes an acid storage tank 1 and an acid truck (not shown in the figure), and the acid release metering system further includes:

[0034] Acid discharge pipe 2 is located between acid storage tank 1 and the acid truck;

[0035] Flow meter 3 is installed on acid discharge pipe 2;

[0036] Electric switching valve 4 is installed on acid discharge pipe 2 and located downstream of flow meter 3;

[0037] Electric regulating valve 5 is installed on acid discharge pipe 2 and located downstream of electric switching valve 4;

[0038] Among them, the flow meter 3, the electric switching valve 4, and the electric regulating valve 5 are all electrically connected to a controller.

[0039] Specifically, the acid storage tank 1 is made of carbon steel. At room temperature, concentrated sulfuric acid will form a dense passivation film on the surface of the carbon steel, preventing the sulfuric acid from reacting further with the carbon steel, thus providing protection. One end of the acid discharge pipe 2 is connected to the output end of the acid storage tank 1, and the other end is connected to the acid cart, so that the acid storage tank 1 and the acid cart are connected, thereby facilitating the transfer of the concentrated sulfuric acid stored in the acid storage tank 1 to the acid cart.

[0040] Flow meter 3 is a cumulative flow meter, capable of real-time monitoring and accumulation of the total acid volume flowing through acid discharge pipe 2. Because it is installed upstream of electric switching valve 4 and electric regulating valve 5, it can accurately measure and accumulate the acid flow rate as soon as the acid begins to flow. Thus, regardless of the operating state of electric switching valve 4 and electric regulating valve 5, the total acid volume flowing out of acid storage tank 1 can be accurately recorded, providing a reliable basis for subsequent acid discharge control and metering settlement. During the opening and closing of electric switching valve 4 and electric regulating valve 5, changes in the acid flow state can occur, such as the generation of eddies and pressure fluctuations. Installing the cumulative flow meter upstream of these valves prevents the influence of valve action on the acid flow state from being transmitted to flow meter 3, thereby ensuring the stability and accuracy of flow meter 3's measurement. The controller can precisely control electric switching valve 4 and electric regulating valve 5 based on the real-time feedback of acid flow rate and cumulative total amount information from the cumulative flow meter.

[0041] Electric switching valve 4 is installed on acid discharge pipe 2 and downstream of flow meter 3, and electric regulating valve 5 is installed on acid discharge pipe 2 and downstream of electric switching valve 4. The controller has preset pre-loaded acid quantity parameters. Initially, the controller fully opens electric switching valve 4 and electric regulating valve 5 to accelerate acid discharge and save time. The controller receives real-time feedback from flow meter 3. For example, when the discharged acid quantity reaches 80% of the pre-loaded acid quantity, the controller can partially open electric regulating valve 5 to reduce the acid discharge rate, absorb inertial flow, and reduce errors. When the discharged acid quantity reaches 100% of the pre-loaded acid quantity, the controller can fully close electric regulating valve 5, and then close electric switching valve 4, ending the acid discharge.

[0042] This application replaces the manual acid discharging metering method with an automatic acid discharging metering system consisting of an acid storage tank 1, an acid discharging pipe 2, a flow meter 3, an electric switch valve 4, an electric regulating valve 5, and a controller. The control mode of "coarse adjustment + fine adjustment" is formed by the electric switch valve 4 and the electric regulating valve 5. The electric switch valve 4 is responsible for the rapid on / off of the acid liquid to realize the start and stop control of acid discharging, while the electric regulating valve 5 is responsible for fine adjustment of the flow rate during acid discharging to ensure accurate control of the amount of acid discharged. The collaborative working mode improves the control accuracy and stability of the acid discharging metering system, thereby reducing acid discharging errors and avoiding acid truck overloading or empty loss.

[0043] Example 2:

[0044] See Figure 1 Optionally, based on Embodiment 1, a thermal resistor 6 is installed upstream of the flow meter 3.

[0045] Specifically, the thermal resistor 6 can measure the temperature of the sulfuric acid flowing inside the pipe in real time. The corresponding density can be obtained from the acid temperature fed back by the thermal resistor 6, and then multiplied by the flow rate fed back by the flow meter 3 to calculate the current amount of acid loaded, thus improving the accuracy of measurement.

[0046] Optionally, the acid discharge pipe 2 is connected to the output end of the acid storage tank 1 via the first flange 7.

[0047] Specifically, the first flange 7 is made of fluorocarbon-lined steel, which prevents sulfuric acid from directly contacting the metal substrate and extends its service life. The flange connection facilitates installation and disassembly, and the intermediate gasket ensures a reliable seal, preventing leakage.

[0048] Optionally, the two ends of the flow meter 3 are mounted on the acid discharge pipe 2 via the second flange 8.

[0049] Specifically, the second flange 8 is made of fluorocarbon-lined steel, which prevents sulfuric acid from directly contacting the metal substrate and extends its service life. The flange connection facilitates installation and disassembly, and a reliable seal is achieved through an intermediate gasket to prevent leakage.

[0050] Optionally, the two ends of the electric switching valve 4 are mounted on the acid discharge pipe 2 via a third flange 9.

[0051] Specifically, the third flange 9 is made of fluorocarbon-lined steel, which prevents sulfuric acid from directly contacting the metal substrate and extends its service life. The flange connection facilitates installation and disassembly, and a reliable seal is achieved through an intermediate gasket to prevent leakage.

[0052] Optionally, the two ends of the electric regulating valve 5 are mounted on the acid discharge pipe 2 via the fourth flange 10.

[0053] Specifically, the fourth flange 10 is made of fluorocarbon-lined steel, which prevents sulfuric acid from directly contacting the metal substrate and extends its service life. The flange connection facilitates installation and disassembly, and a reliable seal is achieved through an intermediate gasket to prevent leakage.

[0054] Optionally, the acid discharge pipe 2 is made of carbon steel, and the connection between the acid discharge pipe 2 and the acid truck is made of fluoroplastic hose.

[0055] Specifically, carbon steel itself has high mechanical strength (high tensile strength), which can withstand the pressure and weight of acid, making it suitable for long-distance fixed-layout acid discharge pipes 2. At the same time, carbon steel pipes, due to their self-passivating properties, have strong acid corrosion resistance, making them suitable for transporting concentrated sulfuric acid and greatly extending their service life. Fluoroplastics are resistant to almost all strong acids (including concentrated sulfuric acid and nitric acid) and solvents, and their non-porous inner lining prevents acid penetration. The flexible hose can be directly matched with the interfaces of the acid discharge pipe 2 and the acid truck to form a sealed system, eliminating leakage.

[0056] It should be noted that the structures and / or installation methods not detailed in this application are those that can be known by those skilled in the art in combination with common knowledge and / or prior art, and are not the focus of this application, and will not be elaborated further here.

[0057] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this application; the dimensions of the drawings are not related to the specific physical object, and the physical object dimensions can be arbitrarily changed.

Claims

1. An acid metering system, comprising an acid storage tank (1) and an acid truck, characterized in that, The acid emission metering system also includes: An acid discharge pipe (2) is installed between the acid storage tank (1) and the acid truck; A flow meter (3) is installed on the acid discharge pipe (2); An electric switch valve (4) is installed on the acid discharge pipe (2) and located downstream of the flow meter (3); An electric regulating valve (5) is installed on the acid discharge pipe (2) and located downstream of the electric switching valve (4); Among them, the flow meter (3), the electric switching valve (4) and the electric regulating valve (5) are all electrically connected to the controller.

2. The acid emission metering system as described in claim 1, characterized in that, A thermal resistor (6) is installed upstream of the flow meter (3).

3. The acid emission metering system as described in claim 1, characterized in that, The acid discharge pipe (2) is connected to the output end of the acid storage tank (1) through the first flange (7).

4. The acid emission metering system as described in claim 1, characterized in that, The two ends of the flow meter (3) are installed on the acid discharge pipe (2) through the second flange (8).

5. The acid emission metering system as described in claim 1, characterized in that, The two ends of the electric switching valve (4) are installed on the acid discharge pipe (2) through the third flange (9).

6. The acid emission metering system as described in claim 1, characterized in that, The two ends of the electric regulating valve (5) are installed on the acid discharge pipe (2) through the fourth flange (10).

7. The acid metering system as described in claim 1, characterized in that, The acid discharge pipe (2) is made of carbon steel, and the connection between the acid discharge pipe (2) and the acid truck is made of fluoroplastic hose.

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