Calibration device for gas-solid two-phase measuring equipment

Abstract

The utility model provides a calibration device for gas-solid two-phase measuring equipment, which relates to the technical field of gas-solid two-phase flow measuring product evaluation, and comprises a detection pipeline, a feeding device and a gas flow generating device, and the feeding device feeds materials into the detection pipeline through one end of the detection pipeline and controls the feeding amount; the airflow generating device can generate airflow in the detection pipeline and enable the powder to flow from one end of the detection pipeline to the other end of the detection pipeline in a gas-solid two-phase flow form, and the detection pipeline is provided with a mounting position of gas-solid two-phase measuring equipment. According to the scheme provided by the utility model, simulation of different working conditions can be provided, and the gas-solid two-phase measuring equipment is evaluated by changing the mass flow rate of feeding.

Description

Technical Field

[0001] The utility model relates to the technical field of gas-solid two-phase flow measurement product evaluation, in particular to a calibration device for a gas-solid two-phase measurement device. Background Art

[0002] Gas-solid two-phase flow is a typical flow form in multiphase flow systems and is widely used in many industrial productions such as food processing, chemical engineering, papermaking and plastic production, power generation, and solid waste treatment. The pneumatic conveying of powder is a typical representative of its application. In the measurement of gas-solid two-phase flow, gas-solid two-phase measurement devices are usually used to measure the mass flow rate of powder or other data. However, there is a lack of evaluation devices for gas-solid two-phase measurement products, which leads to uneven measurement accuracy of gas-solid two-phase measurement products. Based on this, there is an urgent need for a calibration device for gas-solid two-phase measurement devices to evaluate gas-solid two-phase measurement devices. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a calibration device for a gas-solid two-phase measurement device to solve the problems existing in the above-mentioned prior art. The gas-solid two-phase flow measurement evaluation device provides simulations of different working conditions and evaluates the gas-solid two-phase measurement device by changing the mass flow rate of the feed.

[0004] To achieve the above purpose, the utility model provides the following scheme:

[0005] The utility model provides a calibration device for a gas-solid two-phase measurement device, which includes a detection pipeline, a feeding device, and an air flow generating device. The feeding device feeds materials into the detection pipeline through one end of the detection pipeline and controls the feeding amount. The air flow generating device can generate an air flow in the detection pipeline and enable the powder to flow from one end of the detection pipeline to the other end in the form of gas-solid two-phase flow. An installation position for a gas-solid two-phase measurement device is arranged on the detection pipeline.

[0006] Preferably, a medium storage tank is connected to the outlet of the detection pipeline, and the medium storage tank can store the powder flowing out of the detection pipeline.

[0007] Preferably, the medium storage tank is connected to the feeding device through a return pipeline and can return materials. The medium storage tank is provided with a feeding port, a discharging port, and a first vibrator. The feeding port is connected to one end of the detection pipeline, the discharging port is connected to the feeding device, a cut-off valve is arranged at the bottom of the medium storage tank, and the cut-off valve is located inside the discharging port. The first vibrator is arranged on the tank wall of the medium storage tank.

[0008] Preferably, the feeding device includes a weighing tank, a feeder, a homogenizing tank and a second vibrator; the weighing tank is used to hold powder materials, the weighing tank is connected to the inner cavity of the feeder, the feeder is connected to the homogenizing tank, the second vibrator is fixed on the outer wall of the weighing tank, and the outlet of the homogenizing tank is communicated with one end of the detection pipeline.

[0009] Preferably, the air flow generating device includes an air filter and a negative pressure fan. The negative pressure fan is connected to both the weighing tank and the intermediate storage tank. The negative pressure fan can make the intermediate storage tank in a negative pressure state to realize the flow of dust in the detection pipeline to the intermediate storage tank; the negative pressure fan can also make the weighing tank in a negative pressure state so that the dust in the weighing tank can be recycled through the return pipe.

[0010] Preferably, an air filter is provided at the air suction port of the negative pressure fan.

[0011] Preferably, a supplementary air pipeline is also connected to the air suction port of the negative pressure fan. The end of the supplementary air pipeline is communicated with the external environment. An opening degree valve is provided on the supplementary air pipeline. The negative pressure state in the detection pipeline is adjusted by controlling the opening degree of the opening degree valve.

[0012] The utility model has achieved the following technical effects compared with the prior art:

[0013] The calibration device for the gas-solid two-phase measurement equipment provided by the utility model can simulate different working conditions, calculate or detect the actual values of the required data through standard detection equipment, and compare the corresponding values displayed on the gas-solid two-phase measurement equipment to realize the evaluation of the gas-solid two-phase measurement equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 It is a schematic structural diagram of the calibration device for the gas-solid two-phase measurement equipment provided by the embodiment of the present utility model;

[0016] Figure 2 is Figure 1 a schematic structural diagram of the feeding device in

[0017] Figure 3 is Figure 1 a schematic structural diagram of the intermediate storage tank in

[0018] Figure 4 isFigure 1 Structural schematic diagram of the middle air flow generating device;

[0019] In the figure: 1 - weighing tank; 2 - feeder; 3 - uniform tank; 4 - air supplement valve; 5 - weighing tank feed inlet; 6 - second vibrator; 7 - middle storage tank; 8 - stop valve; 9 - filter; 10 - middle storage tank feed inlet; 11 - first vibrator; 12 - middle storage tank discharge outlet; 13 - air filter; 14 - negative pressure fan; 15 - opening valve; 16 - detection pipeline; 17 - return pipe; 18 - feeding device; 19 - air flow generating device. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0021] The purpose of the present invention is to provide a calibration device for a gas-solid two-phase measurement device to solve the problems existing in the above-mentioned prior art. The gas-solid two-phase flow measurement and evaluation device provides simulations of different working conditions and evaluates the gas-solid two-phase measurement device by changing the mass flow rate of the feed.

[0022] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] The present invention provides a calibration device for a gas-solid two-phase measurement device, as Figures 1 to 4 shown, including a detection pipeline 16, a feeding device 18, and an air flow generating device 19. The feeding device 18 can feed materials into the detection pipeline 16 through one end of the detection pipeline 16 and control the feeding amount; the air flow generating device 19 can generate an air flow in the detection pipeline 16 and make the powder flow from one end of the detection pipeline 16 to the other end in the form of a gas-solid two-phase flow. An installation position for the gas-solid two-phase measurement device is provided on the detection pipeline 16.

[0024] Among them, an air supplement valve 4 is provided at a position of the detection pipeline 16 close to the feed end. The air supplement valve 4 connects the detection pipeline 16 to the atmosphere, and the intake air volume of the air is adjusted by adjusting the opening degree of the air supplement valve 4, thereby simulating different working conditions.

[0025] The gas-solid two-phase measuring equipment calibration device provided by the utility model can simulate different working conditions, calculate or detect the actual values ​​of the required data through standard detection equipment, and compare the corresponding values ​​displayed on the gas-solid two-phase measuring equipment to realize the evaluation of the gas-solid two-phase measuring equipment.

[0026] For example, the feeding amount within the set time is known data. The actual mass flow rate of the powder can be calculated based on the feeding amount and time, and compared with the mass flow rate value detected by the gas-solid two-phase measuring equipment to evaluate the gas-solid two-phase measuring equipment.

[0027] This embodiment can calibrate the gas-solid two-phase measuring device that can detect the mass flow rate of powder. When other data need to be calibrated, such as solid particle density, solid particle velocity, etc., it is necessary to find a method to calculate the actual data information, such as by pre-setting a standard gas-solid two-phase measuring device on the detection pipeline 16 to detect the actual data.

[0028] In the prior art, there are many devices that can achieve quantitative feeding. In the preferred embodiment of the utility model, the feeding device 18 includes a weighing tank 1, a feeder 2, a homogenizing tank 3 and a second vibrator 6; the weighing tank 1 is used to contain powder, the weighing tank 1 is connected to the inner cavity of the feeder 2, the feeder 2 is connected to the homogenizing tank 3, the second vibrator 6 is fixed on the outer wall of the weighing tank 1, and the outlet of the homogenizing tank 3 is connected to one end of the detection pipe 16. The second vibrator 6 can vibrate the tank wall of the weighing tank 1 to prevent the powder from remaining on the inner wall of the weighing tank 1. The weighing tank 1 measures the solid mass therein and displays the average mass flow rate of the feeding while feeding, so as to realize real-time monitoring of the feeding amount. The feeder 2 can adjust the speed of 0-50r / min to achieve different mass flow rates of feeding.

[0029] The airflow generating device 19 can generate airflows with different flow rates to simulate different working conditions. Specifically, the airflow generating device 19 includes an air filter 13 and a negative pressure fan 14. The negative pressure fan 14 is connected to the weighing tank 1 and the intermediate storage tank 7. The negative pressure fan 14 can make the intermediate storage tank 7 present a negative pressure to achieve the flow of dust in the detection pipe 16 to the intermediate storage tank 7; the negative pressure fan 14 can also make the weighing tank 1 present a negative pressure to allow the dust in the weighing tank 1 to be returned through the return pipe 17. In a preferred embodiment, an air filter 13 is provided at the air suction port of the negative pressure fan 14, and the air filter 13 is used to prevent powder from entering the negative pressure fan 14. The feed end of the return pipe 17 is also provided with an air supply valve 4.

[0030] In order to satisfy the generation of airflows with different flow rates, an air supply pipeline is also connected to the air extraction port of the negative pressure fan 14 in the embodiment of the present utility model. The end of the air supply pipeline is connected to the external environment, and an opening degree valve 15 is provided on the air supply pipeline. The negative pressure state in the detection pipeline 16 is adjusted by controlling the opening degree of the opening degree valve 15.

[0031] In order to enable the powder to be reused, the outlet of the detection pipeline 16 in the gas-solid two-phase measurement equipment calibration device provided in the embodiment of the present utility model is connected to an intermediate storage tank 7, and the intermediate storage tank 7 can store the powder flowing out of the detection pipeline 16.

[0032] Among them, the intermediate storage tank 7 is connected through a return pipeline 17 and a feeding device 18 and can return the material; an inlet, an outlet and a first vibrator 11 are provided on the intermediate storage tank 7. The inlet is connected to one end of the detection pipeline 16, the outlet is connected to the feeding device 18, a cut-off valve 8 is provided at the bottom of the intermediate storage tank 7, the cut-off valve 8 is located inside the outlet, and the first vibrator 11 is provided on the tank wall of the intermediate storage tank 7. When the first vibrator 11 is turned on, it can cause the tank wall of the intermediate storage tank 7 to vibrate to prevent the powder from remaining on the inner wall of the tank of the intermediate storage tank 7. The first vibrator 11 is preferably provided on the outer wall of the intermediate storage tank 7. The gas-solid two-phase measurement equipment calibration device provided in this embodiment recycles the powder, thereby reducing the evaluation cost.

[0033] In some embodiments, a standard gas-solid two-phase measurement equipment can be arranged in the detection pipeline 16, and the gas-solid two-phase measurement equipment to be measured is evaluated based on the data measured by the standard gas-solid two-phase measurement equipment.

[0034] Specific examples are used in the present utility model to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A gas-solid two-phase measurement equipment calibration device, characterized in that: It comprises a detection pipeline, a feeding device and an airflow generating device. The feeding device feeds material into the detection pipeline through one end of the detection pipeline and controls the feeding amount. The airflow generating device can generate airflow in the detection pipeline and make the powder flow from one end of the detection pipeline to the other end of the detection pipeline in the form of gas-solid two-phase flow. The detection pipeline is provided with an installation position for gas-solid two-phase measuring equipment.

2. The gas-solid two-phase measurement equipment calibration device according to claim 1, characterized in that: The outlet of the detection pipeline is connected to an intermediate storage tank, and the intermediate storage tank can store the powder flowing out of the detection pipeline.

3. The gas-solid two-phase measurement equipment calibration device according to claim 2, characterized in that: The intermediate storage tank is connected to the feeding device through a return pipe and can return materials; a feed port, a discharge port and a first vibrator are provided on the intermediate storage tank, the feed port is connected to one end of the detection pipeline, the discharge port is connected to the feeding device, a stop valve is provided at the bottom of the intermediate storage tank, the stop valve is located on the inner side of the discharge port, and the first vibrator is provided on the tank wall of the intermediate storage tank.

4. The gas-solid two-phase measurement equipment calibration device according to claim 3 is characterized in that: The feeding device includes a weighing tank, a feeder, a homogenizing tank and a second vibrator; the weighing tank is used to contain powder, the weighing tank is connected to the inner cavity of the feeder, the feeder is connected to the homogenizing tank, the second vibrator is fixed on the outer wall of the weighing tank, and the outlet of the homogenizing tank is connected to one end of the detection pipeline.

5. The gas-solid two-phase measurement equipment calibration device according to claim 4, characterized in that: The airflow generating device includes an air filter and a negative pressure fan. The negative pressure fan is connected to the weighing tank and the intermediate storage tank. The negative pressure fan can make the intermediate storage tank present a negative pressure so that the dust in the detection pipeline can flow to the intermediate storage tank. The negative pressure fan can also make the weighing tank present a negative pressure so that the dust in the weighing tank can be returned through the return pipe.

6. The gas-solid two-phase measurement equipment calibration device according to claim 5, characterized in that: An air filter is arranged at the air suction port of the negative pressure fan.

7. The gas-solid two-phase measurement equipment calibration device according to claim 6, characterized in that: The air suction port of the negative pressure fan is also connected to an air supply pipeline, the end of which is connected to the external environment. An opening valve is provided on the air supply pipeline, and the negative pressure state in the detection pipeline is adjusted by controlling the opening degree of the opening valve.

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