Coal water slurry fluidity testing device and coal water slurry conveying system

Abstract

The utility model discloses a coal water slurry fluidity testing device which comprises a testing container and a weighing module, the testing container is provided with a testing inlet, a testing outlet and a visual window, and a control valve and a timer are arranged at the testing outlet. During working, the coal water slurry enters the test container and is observed through the visual window, after the coal water slurry in the test container reaches a certain scale, the quality of the coal water slurry at the moment is recorded, the control valve is opened, and meanwhile, the timer starts timing until all the coal water slurry flows out, and timing is finished. The flow rate of the coal water slurry can be judged according to the time recorded by the timer and the mass of the coal water slurry, the flowability of the field coal water slurry can be judged according to the flowing state of the slurry, in addition, the density of the slurry can be measured and calculated according to the mass and the volume, and guarantee is provided for smooth conveying of the coal water slurry. The utility model further provides a coal water slurry conveying system which comprises a coal water slurry conveying pipeline and the coal water slurry fluidity testing device.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid fuel, in particular to a water-coal slurry fluidity testing device and a water-coal slurry conveying system. Background Art

[0002] Coal-water slurry is a low-pollution, high-efficiency, pipeline-transportable coal-based fluid fuel that replaces oil and is obtained by physical processing of a large amount of coal, a small amount of water and a trace amount of additives. It can be used as a furnace fuel or a synthetic gas raw material, and has the advantages of stable combustion and low pollution emissions.

[0003] As a solid-liquid two-phase suspension flow system, the velocity change level between the particles of coal-water slurry is extremely closely related to the shear stress it is subjected to. For coal-water slurry, its flow properties will produce many complex changes. To a certain extent, coal-water slurry has almost all the characteristics of non-Newtonian fluids. In the actual coal-water slurry gasification production process and pipeline transportation, the fluidity of coal-water slurry directly affects the gasification properties of coal-water slurry.

[0004] In terms of pipeline transmission applications, the role of coal-water slurry is closely integrated with all aspects of production. Therefore, measuring the fluidity of coal-water slurry directly on the pipeline is of great significance to the coal-water slurry gasification production process. Utility Model Content

[0005] The utility model aims to provide a water-coal slurry fluidity testing device and a water-coal slurry conveying system to solve the problems existing in the above-mentioned prior art, test the fluidity of the water-coal slurry, and provide guarantee for the smooth transmission of the water-coal slurry.

[0006] To achieve the above purpose, the utility model provides the following solutions:

[0007] The utility model provides a device for testing the fluidity of a water-coal slurry, comprising:

[0008] A test container, the test container having a test inlet, a test outlet and a visual window, the test inlet and the test outlet can be connected to the water-coal slurry conveying pipeline, and along the flow direction of the water-coal slurry in the water-coal slurry conveying pipeline, the test inlet is located upstream of the test outlet, the visual window is arranged on the side wall of the test container, and a scale is arranged on the visual window; a control valve and a timer are arranged at the test outlet;

[0009] A weighing module is connected to the test container and is used to detect the weight of the test container and the water-coal slurry entering the test container.

[0010] Preferably, the test container comprises a coaxially arranged cylindrical section and a conical section, the cylindrical section is located at the top of the conical section and the two are connected, the test inlet is connected to the cylindrical section, and the test outlet is connected to the tip of the conical section; the weighing module is arranged on the outer wall of the conical section.

[0011] Preferably, there are multiple weighing modules, and the weighing modules are circumferentially arranged around the axis of the test container.

[0012] Preferably, the side wall of the connection point between the cylindrical section and the conical section has a transitional cambered surface.

[0013] Preferably, the test inlet can be connected to the water-coal slurry conveying pipeline by means of an input pipe, and the input pipe is a flexible pipe.

[0014] Preferably, the test outlet is connected to an output pipe, the control valve is arranged at the connection point between the output pipe and the test container, and the timer is arranged at one end of the output pipe away from the test container.

[0015] Preferably, the volume of the test container is 2L; the nominal diameter of the output tube ranges from 25mm to 50mm.

[0016] Preferably, the water-coal slurry fluidity testing device further comprises a flushing module, wherein the flushing module is disposed in the testing container and is used to flush the testing container.

[0017] Preferably, the flushing module comprises a spray element, which is capable of spraying cleaning liquid onto the test container, and the spray element is arranged close to the test inlet.

[0018] The utility model also provides a water-coal slurry conveying system, comprising a water-coal slurry conveying pipeline and the above-mentioned water-coal slurry fluidity testing device, wherein the water-coal slurry fluidity testing device is detachably connected to the water-coal slurry conveying pipeline.

[0019] Compared with the prior art, the utility model has achieved the following technical effects: the water-coal slurry fluidity testing device of the utility model comprises a test container and a weighing module, wherein the test container has a test inlet, a test outlet and a visual window, the test inlet and the test outlet can be connected to the water-coal slurry conveying pipeline, and along the flow direction of the water-coal slurry in the water-coal slurry conveying pipeline, the test inlet is located upstream of the test outlet, the visual window is arranged on the side wall of the test container, and a scale is arranged on the visual window; a control valve and a timer are arranged at the test outlet; the weighing module is connected to the test container, and the weighing module is used to detect the weight of the test container and the water-coal slurry entering the test container.

[0020] The utility model of the water-coal slurry fluidity testing device, when working, the water-coal slurry enters the test container, and is observed through the visual window. After the water-coal slurry in the test container reaches a certain scale, the mass of the water-coal slurry at this moment is recorded, the control valve is opened, and the timer starts timing at the same time, until the water-coal slurry flows out completely, and the timing ends. The flow rate of the water-coal slurry can be judged by the time recorded by the timer and the mass of the water-coal slurry, and the fluidity of the water-coal slurry on site can be judged by the state of the slurry flow. In addition, the density of the slurry can be measured by the mass and volume, providing a guarantee for the smooth transportation of the water-coal slurry.

[0021] The utility model also provides a water-coal slurry conveying system, comprising a water-coal slurry conveying pipeline and the above-mentioned water-coal slurry fluidity testing device, the water-coal slurry fluidity testing device is detachably connected to the water-coal slurry conveying pipeline, and the fluidity of the water-coal slurry conveyed by the water-coal slurry conveying pipeline is tested to provide a reference for controlling the water-coal slurry conveying state, thereby ensuring the smooth conveyance of the water-coal slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of a water-coal slurry fluidity testing device disclosed in an embodiment of the utility model.

[0024] In the figure: 100, a water-coal slurry fluidity testing device;

[0025] 1. Input pipe; 2. Flushing module; 3. Test container; 4. Visual window; 5. Weighing module; 6. Control valve; 7. Timer; 8. Test inlet; 9. Test outlet; 10. Output pipe. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] The utility model aims to provide a water-coal slurry fluidity testing device and a water-coal slurry conveying system to solve the problems existing in the above-mentioned prior art, test the fluidity of the water-coal slurry, and provide guarantee for the smooth transmission of the water-coal slurry.

[0028] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0029] Embodiment 1

[0030] The present embodiment provides a water-coal slurry fluidity testing device 100, comprising a testing container 3 and a weighing module 5, wherein the testing container 3 has a testing inlet 8, a testing outlet 9 and a visual window 4, the testing inlet 8 and the testing outlet 9 can be connected to the water-coal slurry conveying pipeline, and along the flow direction of the water-coal slurry in the water-coal slurry conveying pipeline, the testing inlet 8 is located upstream of the testing outlet 9, the visual window 4 is arranged on the side wall of the testing container 3, and a scale is arranged on the visual window 4; a control valve 6 and a timer 7 are arranged at the test outlet 9; the weighing module 5 is connected to the testing container 3, and the weighing module 5 is used to detect the weight of the testing container 3 and the water-coal slurry entering the testing container 3.

[0031] The water-coal slurry fluidity testing device 100 of the utility model, when working, the water-coal slurry enters the test container 3, and is observed through the visual window 4. After the water-coal slurry in the test container 3 reaches a certain scale, the mass of the water-coal slurry at this moment is recorded, and the control valve 6 is opened, and the timer 7 starts timing at the same time, until the water-coal slurry flows out completely, and the timing ends. The flow rate of the water-coal slurry can be judged by the time recorded by the timer 7 and the mass of the water-coal slurry, and the fluidity of the water-coal slurry on site can be judged by the state of the slurry flow. In addition, the density of the slurry can be measured by the mass and volume, which provides a guarantee for the smooth transportation of the water-coal slurry.

[0032] It should be explained here that, in actual application, the weight obtained by the weighing module 5 may be the sum of the masses of the test container 3 and the water-coal slurry. Before the test, the empty test container 3 is weighed in advance using the weighing module 5, and then during the test, the mass of the water-coal slurry is obtained by subtracting the mass of the test container 3 from the sum of the masses of the test container 3 and the water-coal slurry. This is a common method used by those skilled in the art and will not be described in detail here. In addition, obtaining the volume of the water-coal slurry through the scale of the visual window 4 is also a common method used by those skilled in the art and will not be described in detail here.

[0033] In this specific embodiment, the test container 3 includes a coaxially arranged cylindrical section and a conical section, the cylindrical section is located at the top of the conical section and the two are connected, the test inlet 8 is connected to the cylindrical section, the cylindrical section can ensure that the volume of the test container 3 meets the test requirements, the test outlet 9 is connected to the tip of the conical section, and the conical section can be used to guide the water-coal slurry, ensuring that the water-coal slurry can flow out completely, thereby improving the working reliability of the water-coal slurry fluidity test device 100. The weighing module 5 is arranged on the outer wall of the conical section to realize the weighing of the water-coal slurry entering the test container 3.

[0034] In other specific embodiments that can be realized by the present invention, the number of weighing modules 5 can be set to multiple, and the weighing modules 5 are arranged circumferentially around the axis of the test container 3. Multiple weighing modules 5 can be compared with each other, which is beneficial to improving the test accuracy. When one of the weighing modules 5 fails, the quality data obtained by other weighing modules 5 can be used, which is beneficial to improving the working reliability of the water-coal slurry fluidity testing device 100.

[0035] It should also be noted that the side wall of the connection between the cylindrical section and the conical section has a transition arc surface to avoid the existence of dead corners that cause water-coal slurry accumulation and affect the test accuracy.

[0036] Specifically, the test inlet 8 can be connected to the water-coal slurry conveying pipeline by means of the input pipe 1. The input pipe 1 is a flexible pipe, which improves the convenience of the connection operation to adapt to various working conditions that need to be tested, reduces the device's requirements for the test space, and improves the adaptability of the water-coal slurry fluidity testing device 100.

[0037] Correspondingly, the test outlet 9 is connected to the output pipe 10, and the control valve 6 is arranged at the connection between the output pipe 10 and the test container 3. The control valve 6 can be an electric or pneumatic valve for easy control, and the timer 7 is arranged at one end of the output pipe 10 away from the test container 3. The timer 7 uses an infrared timing detector to improve the reliability of timing detection. In addition, in practical applications, the timer 7 and the weighing module 5 can be interlocked, and the relationship between mass and flow rate can be directly recorded, thereby improving the degree of automation of the water-coal slurry fluidity testing device 100.

[0038] In this specific embodiment, the volume of the test container 3 is 2L, and accordingly, the scale range can be selected from 0.5L to 2L. In practical applications, it can also be adjusted according to specific test conditions to meet test requirements. The nominal diameter range of the output tube 10 is 25mm to 50mm. The specification of the output tube 10 is reasonably selected so that the output tube 10 matches the specification of the test container 3 to ensure the smooth progress of the test.

[0039] It should also be emphasized that the water-coal slurry fluidity testing device 100 of the utility model also includes a flushing module 2, which is arranged in the test container 3. The flushing module 2 is used to flush the test container 3 to facilitate subsequent tests, avoid the retention of water-coal slurry and affect subsequent tests, and help ensure the accuracy of the test.

[0040] In this specific embodiment, the flushing module 2 includes a spray element, which can spray a cleaning liquid on the test container 3. The cleaning liquid can be water or other cleaning liquids. The spray element is arranged near the test inlet 8 to spray water mist on the inner wall of the test container 3 for cleaning. The use of the spray element can save cleaning liquid while cleaning, thereby reducing the working cost of the water-coal slurry fluidity testing device 100.

[0041] When the water-coal slurry fluidity test device 100 of the present embodiment is used to test the water-coal slurry fluidity, after the water-coal slurry enters the test container 3 through the input pipe 1 to a certain scale, the mass at this moment is recorded, the control valve 6 switch is opened, and the water-coal slurry automatically flows out. When it flows through the infrared timing detector for the first time, the timing starts until the slurry has completely flowed out, and the timing ends. The flow rate of the slurry can be determined by the infrared timing detector and the mass of the slurry, and the fluidity of the water-coal slurry on site can be determined by the state of the slurry flow. In addition, the density of the slurry can be calculated by the mass and volume. After the measurement is completed, the test container 3 is rinsed by the flushing module 2 to keep the inner wall clean.

[0042] Embodiment 2

[0043] This embodiment provides a coal-water slurry conveying system, including a coal-water slurry conveying pipeline, and also includes the coal-water slurry fluidity testing device 100 in the first embodiment. The coal-water slurry fluidity testing device 100 is detachably connected to the coal-water slurry conveying pipeline.

[0044] In the water-coal slurry conveying system of the present invention, the water-coal slurry fluidity testing device 100 is detachably connected to the water-coal slurry conveying pipeline, and the fluidity of the water-coal slurry conveyed by the water-coal slurry conveying pipeline is tested to provide a reference for controlling the water-coal slurry conveying state, thereby ensuring the smooth conveying of the water-coal slurry.

[0045] In order to facilitate the installation of the coal-water slurry fluidity testing device 100 , an access pipe opening may be provided on the coal-water slurry delivery pipeline to improve the convenience of the test operation.

[0046] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A device for testing the fluidity of coal water slurry, characterized in that: include: A test container, the test container having a test inlet, a test outlet and a visual window, the test inlet and the test outlet can be connected to the water-coal slurry conveying pipeline, and along the flow direction of the water-coal slurry in the water-coal slurry conveying pipeline, the test inlet is located upstream of the test outlet, the visual window is arranged on the side wall of the test container, and a scale is arranged on the visual window; a control valve and a timer are arranged at the test outlet; A weighing module is connected to the test container and is used to detect the weight of the test container and the water-coal slurry entering the test container.

2. The coal water slurry fluidity testing device according to claim 1, characterized in that: The test container includes a coaxially arranged cylindrical section and a conical section, the cylindrical section is located at the top of the conical section and the two are connected, the test inlet is connected to the cylindrical section, and the test outlet is connected to the tip of the conical section; the weighing module is arranged on the outer wall of the conical section.

3. The coal water slurry fluidity testing device according to claim 2, characterized in that: There are multiple weighing modules, and the weighing modules are circumferentially arranged around the axis of the test container.

4. The coal water slurry fluidity testing device according to claim 2, characterized in that: The side wall of the connection point between the cylindrical section and the conical section has a transitional cambered surface.

5. The coal water slurry fluidity testing device according to claim 1, characterized in that: The test inlet can be connected to the water-coal slurry conveying pipeline by means of an input pipe, and the input pipe is a flexible pipe.

6. The coal water slurry fluidity testing device according to claim 1, characterized in that: The test outlet is connected to an output pipe, the control valve is arranged at the connection point between the output pipe and the test container, and the timer is arranged at one end of the output pipe away from the test container.

7. The coal water slurry fluidity testing device according to claim 6, characterized in that: The volume of the test container is 2L; the nominal diameter range of the output tube is 25mm to 50mm.

8. The coal water slurry fluidity testing device according to any one of claims 1 to 7, characterized in that: It also includes a flushing module, which is arranged in the test container and is used to flush the test container.

9. The coal water slurry fluidity testing device according to claim 8, characterized in that: The flushing module comprises a spray element, which can spray cleaning liquid onto the test container, and the spray element is arranged close to the test inlet.

10. A coal-water slurry delivery system, comprising a coal-water slurry delivery pipeline, characterized in that: It also includes the water-coal slurry fluidity testing device according to any one of claims 1 to 9, and the water-coal slurry fluidity testing device is detachably connected to the water-coal slurry conveying pipeline.

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