Coal slurry sampling device

Abstract

The utility model relates to the technical field of coal slurry pipeline sampling, in particular to a coal slurry sampling device which comprises a sampling valve, the sampling valve is installed on a pipe body of a coal slurry pipeline, the two ends of the coal slurry pipeline are fixed to corresponding pipe openings of a coal slurry pump and a coal slurry groove respectively, and the connecting position of the sampling valve and the coal slurry pipeline is a V-shaped connector. The joint is blocked by the V-shaped valve clack; the coal slurry sampling device has the beneficial effects that the distance between the valve clack and the coal slurry pipeline and the distance between the valve seat and the coal slurry pipeline are moderate, on one hand, coal slurry is not easy to deposit in a space above the valve clack, and on the other hand, the valve clack does not extend into the coal slurry pipeline, so that the coal slurry in the coal slurry pipeline does not scour the valve clack; the V-shaped valve body can be provided with an optimal angle according to the mounting position of the sampling device, the whole valve body is in a streamline design, an inner cavity of the valve body has no dead angle, the flow channel surface is smooth, and coal slurry is not easy to hang on the inner wall.

Description

Technical Field

[0001] The utility model relates to the technical field of coal slurry pipeline sampling, in particular to a coal slurry sampling device. Background Technique

[0002] Background Technique

[0003] The coal slurry preparation section is an important process in the pressurized gasification device, which is related to the quality of gasification combustion. The control of coal slurry concentration is also crucial for the consumption of raw coal. Therefore, during production operation, it is necessary to regularly sample and analyze the coal slurry, and the data of the on-line coal slurry concentration meter can also be referred to.

[0004] In the prior art, when sampling coal slurry, samples are generally taken from the coal slurry pipelines under the large coal slurry tank and the small coal slurry tank respectively to analyze the single mill and the total coal slurry samples. Usually, a general ball valve is used for sampling. Since the coal slurry in the short section at the root of the ball valve is not flowing, after a long time, the coal slurry will deposit and block. When the temperature is extremely low and the heat preservation is not good, it may even freeze. Each time sampling is not smooth. When the valve is opened wide, the coal slurry will spray all over the place or splash on the body. When the valve is opened small, no sample can be taken. When the blockage is serious, it is even more difficult to handle, which is time-consuming and laborious, increasing the on-site workload. Content of the Utility Model

[0005] The purpose of the utility model is to provide a coal slurry sampling device to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a coal slurry sampling device, including a sampling valve, the sampling valve is installed on the pipe body of the coal slurry pipeline, the two ends of the coal slurry pipeline are respectively fixed at the corresponding pipe orifices of the coal slurry pump and the coal slurry tank, the connection between the sampling valve and the coal slurry pipeline is a "V"-shaped interface, and the interface is blocked by a V-shaped valve flap.

[0007] Preferably, a V-shaped slurry outlet is fixed on the pipeline of the coal slurry pipeline, and the diameter of the end of the V-shaped slurry outlet extending into the inner side of the coal slurry pipeline is larger than the diameter of the end of the V-shaped slurry outlet far from the coal slurry pipeline.

[0008] Preferably, a slurry outlet flange is fixed at the end of the V-shaped slurry outlet far from the coal slurry pipeline. The slurry outlet flange is connected to the valve body flange through bolts. The valve body flange is fixed at one end of the V-shaped valve body. Claw slots are provided on the inner ring surfaces of the slurry outlet flange and the valve body flange, and a valve seat is clamped between the two claw slots.

[0009] Preferably, a V-shaped valve flap is inserted into the inside of the V-shaped slurry outlet. The V-shaped valve flap is limited by the valve seat. One end of the V-shaped valve flap is fixed with a valve rod. The valve rod penetrates through the valve frame and the V-shaped valve body. The valve frame and the V-shaped valve body are fixed by bolts, and one end of the valve rod extending out of the valve frame is fixed with a handwheel.

[0010] Preferably, a flushing water valve is fixed on the valve body of the V-shaped valve body. The flushing water valve is connected to a flushing pipeline, and a discharge port is fixed on the valve body of the V-shaped valve body.

[0011] Preferably, two coal slurry sealing rings are sleeved on the rod body of the valve stem. The coal slurry sealing rings are clamped between the valve stem and the inner wall of the V-shaped valve body.

[0012] Preferably, a gland is sleeved on the rod body of the valve stem. The gland is clamped between the V-shaped valve body and the valve bracket. A packing is inserted at one end of the V-shaped valve body close to the valve bracket. The packing is clamped between the gland and the V-shaped valve body.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] In the coal slurry sampling device proposed by the present utility model, the distance between the valve flap and the valve seat from the coal slurry pipeline is appropriate. On the one hand, coal slurry is not easily deposited in the space above the valve flap. On the other hand, the valve flap does not extend into the coal slurry pipeline, so the coal slurry in the coal slurry pipeline will not wash the valve flap; the V-shaped valve body can set the optimal angle according to the installation position of the sampling device, and the overall is in a streamline design. There are no dead corners in the inner cavity of the valve body, the flow channel surface is smooth, and the inner wall is not easily hung with coal slurry; the V-shaped slurry outlet cooperates with the V-shaped valve flap. When the valve is opened, the V-shaped valve flap has the functions of pushing and distributing materials upward. The resistance is small when the valve is opened, and as the valve flap moves, the gap between the valve flap and the V-shaped slurry outlet gradually becomes larger, and the coal slurry sampling volume is easy to control. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is a schematic connection structure diagram of the coal slurry pipeline and the V-shaped valve body of the present utility model.

[0017] In the figure: 1. Coal slurry pipeline, 2. Flushing water valve, 3. Coal slurry sealing ring, 4. Packing, 5. Valve bracket, 6. Handwheel, 7. Valve stem, 8. Gland, 9. V-shaped valve body, 10. Valve seat, 11. V-shaped valve flap, 12. V-shaped slurry outlet, 13. Coal slurry pump, 14. Coal slurry tank, 15. Discharge port. Detailed Embodiments

[0018] In order to clearly and completely describe the purpose and technical solution of the present utility model, and make the advantages more clear, the following further details the embodiments of the present utility model with reference to the drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present utility model, rather than all of the embodiments, and are only used to explain the embodiments of the present utility model, and are not used to limit the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present utility model.

[0019] Please refer to Figures 1 to 2 Figures 1 to 2 , the present utility model provides a technical solution: a coal slurry sampling device, including a sampling valve, the sampling valve is installed on the pipe body of the coal slurry pipeline 1, and both ends of the coal slurry pipeline 1 are respectively fixed at the corresponding pipe orifices of the coal slurry pump 13 and the coal slurry tank 14. The connection between the sampling valve and the coal slurry pipeline 1 is a "V"-shaped interface, and the interface is blocked by a V-shaped valve flap 11.

[0020] A V-shaped slurry outlet 12 is fixed on the pipeline of the coal slurry pipeline 1. The diameter of the end of the V-shaped slurry outlet 12 extending into the inner side of the coal slurry pipeline 1 is larger than the diameter of the end of the V-shaped slurry outlet 12 far from the coal slurry pipeline 1. A slurry outlet flange is fixed at the end of the V-shaped slurry outlet 12 far from the coal slurry pipeline 1. The slurry outlet flange is connected to the valve body flange by bolts. The valve body flange is fixed at one end of the V-shaped valve body 9. Card slots are provided on the inner ring surfaces of the slurry outlet flange and the valve body flange, and a valve seat 10 is clamped between the two card slots; a V-shaped valve flap 11 is inserted into the inside of the V-shaped slurry outlet 12. The V-shaped valve flap 11 is limited by the valve seat 10. One end of the V-shaped valve flap 11 is fixed with a valve rod 7. The valve rod 7 penetrates through the valve frame 5 and the V-shaped valve body 9. The valve frame 5 and the V-shaped valve body 9 are fixed by bolts, and one end of the valve rod 7 extending out of the valve frame 5 is fixed with a handwheel 6; the head of the V-shaped valve flap 11 is in a convex shape. The V-shaped valve flap 11 is connected to the valve rod 7. When the valve is in the closed state, the V-shaped valve flap 11 falls on the valve seat 10. The valve seat 10 is located in the middle of the valve body flange and the slurry outlet flange. This valve seat 10 can be replaced. One end of the V-shaped slurry outlet 12 is welded to the coal slurry pipeline 1, and the other end is welded to the flange of the V-shaped slurry outlet 12. The V-shaped slurry outlet 12 gradually tapers from the coal slurry pipeline 1 to the V-shaped valve flap 11.

[0021] A flushing water valve 2 is fixed on the valve body of the V-shaped valve body 9. The flushing water valve 2 is connected to a flushing pipeline. An outlet 15 is fixed on the valve body of the V-shaped valve body 9. The V-shaped valve body 9 is in a large V shape. The V-shaped valve body 9 gradually becomes thinner from the V-shaped valve flap 11 to the sampling outlet 15. The flushing water interface is located at the upper part of the valve body, and the interface is at a certain angle. The interface on the side away from the outlet is lower than the wall thickness of the valve body. In this way, when discharging the coal slurry, the coal slurry is not easily introduced into the flushing water pipeline. The flushing water valve 2 is connected to the flushing pipeline, and the inner wall of the valve body can be flushed regularly.

[0022] There are two coal slurry sealing rings 3 between the valve rod 7 and the valve body. The valve frame 5 is connected to the V-shaped valve body 9. The gland 8 presses the packing 4 at the valve rod stuffing box. The end of the valve rod is the handwheel 6. Rotating the handwheel 6 can lift and lower the valve flap. The coal slurry sampling device is installed on the coal slurry pipeline 1 from the coal slurry tank 14 to the coal slurry pump 13. When installing, the sampling device forms a certain angle with the coal slurry pipeline 1, so that the outlet 15 faces downward and the flushing water pipe is inclined upward.

[0023] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A coal slurry sampling device, comprising a sampling valve, characterized in that: The sampling valve is installed on the pipe body of the coal slurry pipeline (1), and the two ends of the coal slurry pipeline (1) are respectively fixed at the corresponding pipe openings of the coal slurry pump (13) and the coal slurry tank (14). The connection between the sampling valve and the coal slurry pipeline (1) is a "V"-shaped interface, and the interface is blocked by a V-shaped valve flap (11).

2. A coal slurry sampling device according to claim 1, characterized in that: A V-shaped slurry outlet (12) is fixed on the coal slurry pipeline (1), and the diameter of one end of the V-shaped slurry outlet (12) extending into the inner side of the coal slurry pipeline (1) is larger than the diameter of one end of the V-shaped slurry outlet (12) away from the coal slurry pipeline (1).

3. A coal slurry sampling device according to claim 2, characterized in that: A slurry outlet flange is fixed to one end of the V-shaped slurry outlet (12) away from the coal slurry pipeline (1), and the slurry outlet flange is connected to the valve body flange by bolts. The valve body flange is fixed to one end of the V-shaped valve body (9), and the inner ring surfaces of the slurry outlet flange and the valve body flange are both provided with grooves, and a valve seat (10) is clamped between the two grooves.

4. A coal slurry sampling device according to claim 3, characterized in that: A V-shaped valve flap (11) is inserted into the interior of the V-shaped slurry outlet (12), the V-shaped valve flap (11) is limited by the valve seat (10), a valve stem (7) is fixed to one end of the V-shaped valve flap (11), the valve stem (7) passes through the valve frame (5) and the V-shaped valve body (9), the valve frame (5) and the V-shaped valve body (9) are fixed by bolts, and a hand wheel (6) is fixed to one end of the valve stem (7) that extends out of the valve frame (5).

5. A coal slurry sampling device according to claim 3, characterized in that: A flushing water valve (2) is fixed on the valve body of the V-shaped valve body (9), and the flushing water valve (2) is connected to the flushing pipeline. A discharge port (15) is fixed on the valve body of the V-shaped valve body (9).

6. A coal slurry sampling device according to claim 4, characterized in that: Two coal slurry sealing rings (3) are sleeved on the rod body of the valve stem (7), and the coal slurry sealing rings (3) are clamped between the valve stem (7) and the inner wall of the V-shaped valve body (9).

7. A coal slurry sampling device according to claim 4, characterized in that: A gland (8) is sleeved on the stem body of the valve stem (7), the gland (8) is clamped between the V-shaped valve body (9) and the valve frame (5), a packing (4) is inserted into one end of the V-shaped valve body (9) close to the valve frame (5), and the packing (4) is clamped between the gland (8) and the V-shaped valve body (9).

Images