Sampling device for coal water slurry

Abstract

According to the sampling device, a root valve is arranged on a main pipe, one end of the root valve is connected with a buffer pipe, a sampling pipe is connected with the buffer pipe, and the inner diameter of the sampling pipe is larger than the inner diameter of the root valve and the inner diameter of the sampling pipe, so that the problem of splashing of the coal water slurry during sampling is avoided, and a large amount of the coal water slurry is saved; the safety of sampling personnel during sampling is protected, meanwhile, the labor cost is reduced, and the coal water slurry does not need to be additionally cleaned and recycled.

Description

Technical Field

[0001] The present application relates to the technical field of coal chemical equipment, and in particular to a sampling device for water-coal slurry. Background Art

[0002] Coal-water slurry is a coal-based liquid fuel obtained through a series of physical processes such as direct mixing and stirring of carbon powder, water and chemical additives. Its ratio is about 70% coal, 29% water and 1% additives. In the coal gasification unit, due to the special composition of coal-water slurry and its importance to the output of the chemical unit, coal-water slurry must be sampled and analyzed.

[0003] The sampling valve is installed on the inlet pipe between the water-coal slurry tank and the delivery pump. The sampling personnel perform sampling operations by closing and opening the valve. However, due to the poor local fluidity and easy deposition of the water-coal slurry, the sampling tube is often blocked, especially in the pipe section after the valve, where the water-coal slurry gradually settles and agglomerates. Therefore, a stick must be used to clear the blocked pipe section after the shower valve every time sampling is performed. Since the water-coal slurry in the pipeline has a certain pressure, when the stick is used to clear the pipe, the water-coal slurry will suddenly spray out of the shower valve, which not only pollutes the working environment but also causes a large amount of waste of water-coal slurry. It is also very easy to splash on the sampling personnel and face and cause injuries. Utility Model Content

[0004] The purpose of the present application is to overcome the problems of agglomeration, clogging and splashing of water-coal slurry sampling devices in the prior art, and to provide a water-coal slurry sampling device that does not splash during sampling.

[0005] The technical solution of the present application provides a sampling device for water-coal slurry, the sampling device comprising a main pipe, a root valve connected to the main pipe, a buffer pipe and a sampling pipe;

[0006] One end of the root valve is connected to the main pipe, and the other end is connected to the buffer tube. The sampling tube is connected to the buffer tube. The inner diameter of the buffer tube is larger than the inner diameter of the root valve and the inner diameter of the sampling tube.

[0007] Furthermore, the top of the buffer tube is provided with an opening, and a top cover capable of closing the opening is installed on the opening.

[0008] Furthermore, it also includes a flushing water pipe for flushing the buffer tube;

[0009] The flushing water pipe is connected to the buffer pipe.

[0010] Furthermore, it also includes a first connecting pipe connected between the buffer pipe and the root valve;

[0011] The flushing water pipe is connected to the first connecting pipe.

[0012] Furthermore, the flushing water pipe is vertically connected to the first connecting pipe, and the length of the first connecting pipe minus the outer diameter of the flushing water pipe is 50 to 60 mm.

[0013] Furthermore, it also includes an emergency dredging valve for dredging the buffer pipe;

[0014] The emergency dredging valve is connected to the buffer pipe.

[0015] Furthermore, the axis of the emergency dredging valve, the axis of the first connecting pipe and the axis of the root valve are in the same straight line;

[0016] The emergency unblocking valve is provided with an unblocking member for unblocking the first connecting pipe, the buffer pipe and the root valve.

[0017] Furthermore, the inner diameter of the emergency dredging valve is 12 to 14 mm.

[0018] Furthermore, the sampling tube is connected to the bottom of the buffer tube.

[0019] Furthermore, a second connecting pipe is connected between the root valve and the main pipe, the second connecting pipe is vertically connected to the main pipe, and the length of the second connecting pipe is 50 to 100 mm.

[0020] After adopting the above technical solution, the following beneficial effects are achieved:

[0021] The present application discloses a sampling device for water-coal slurry, which provides a root valve on the main pipe, connects a buffer tube to one end of the root valve, and connects the sampling tube to the buffer tube. The inner diameter of the sampling tube is larger than the inner diameter of the root valve and the inner diameter of the sampling tube, thereby avoiding the problem of water-coal slurry splashing during sampling, saving a large amount of water-coal slurry, protecting the safety of sampling personnel during sampling, and reducing labor costs, without the need for additional cleaning and recovery of the water-coal slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The disclosure of the present application will become easier to understand with reference to the accompanying drawings. It should be understood that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present application. In the drawings:

[0023] Figure 1 It is a structural schematic diagram of the sampling device for water-coal slurry in Example 1 of the present application.

[0024] Reference table of reference numerals:

[0025] Main pipe 1, root valve 2, buffer pipe 3, sampling pipe 4, top cover 5, flushing water pipe 6, first connecting pipe 7, emergency dredging valve 8, second connecting pipe 9. DETAILED DESCRIPTION

[0026] The specific implementation of the present application is further described below with reference to the accompanying drawings.

[0027] It is easy to understand that according to the technical solution of the present application, without changing the essential spirit of the present application, a variety of structural modes and implementation modes that can be replaced by those skilled in the art can be replaced with each other. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the present application, and should not be regarded as the entirety of the present application or as a limitation or restriction on the technical solution of the application.

[0028] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. They are relative concepts and may change accordingly according to their different positions and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0029] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above-mentioned in this application can be understood according to the specific circumstances.

[0030] like Figure 1 As shown, a sampling device for water-coal slurry in an embodiment of the present application comprises a main pipe 1, a root valve 2 connected to the main pipe 1, a buffer pipe 3 and a sampling pipe 4;

[0031] One end of the root valve 2 is connected to the main pipe 1 , and the other end is connected to the buffer tube 3 . The sampling tube 4 is connected to the buffer tube 3 . The inner diameter of the buffer tube 3 is larger than the inner diameter of the root valve 2 and the inner diameter of the sampling tube 4 .

[0032] In an embodiment of the present application, the sampling device includes a main pipe 1 for transporting water-coal slurry, a root valve 2 connected to the main pipe 1, a buffer tube 3 connected to the root valve 2, and a sampling tube 4 connected to the buffer tube 3, wherein the inner diameter of the buffer tube 3 is larger than the inner diameter of the root valve 2 and the inner diameter of the sampling tube 4.

[0033] Specifically, when the root valve 2 is opened, the water-coal slurry may splash due to its own properties. At this time, the water-coal slurry will quickly spray out from the root valve 2, and the buffer tube 3 plays a role in preventing the water-coal slurry from splashing and storing the water-coal slurry. When the water-coal slurry in the buffer tube 3 exceeds the sampling capacity value, the root valve 2 can be closed, and the sampling tube 4 connected to the buffer tube 3 can be opened for sampling. After the sampling is completed, the water-coal slurry in the buffer tube 3 is discharged through the sampling tube 4 for recycling. While saving a large amount of water-coal slurry, the safety of the sampling personnel is protected, and the recovery of the water-coal slurry is more convenient, and no extra manpower is required for cleaning and recovery.

[0034] The buffer tube 3 can use a pipe section of DN80 or DN100, with a length of about 200 mm. The nominal diameter of the pipe section can also be determined according to the position of the root valve 2 to facilitate sampling, prevent splashing, and reduce sampling pressure. The buffer tube 3 can be arranged horizontally or vertically, depending on the installation space.

[0035] The sampling port is generally a DN25 pipe, which is convenient for sampling personnel to take samples.

[0036] like Figure 1 As shown, in another preferred embodiment, the top of the buffer tube 3 is provided with an opening, and a top cover 5 for closing the opening is installed on the opening.

[0037] In this preferred embodiment, an opening is provided at the top of the buffer tube 3, and a top cover 5 that can close the opening is installed at the opening. When sampling is performed, the top cover 5 needs to be used to close the opening to prevent the water-coal slurry from overflowing. If blockage or the like occurs during sampling, the root valve 2 can be closed, and the top cover 5 can be opened to observe at the opening to understand the agglomeration of the water-coal slurry inside the buffer tube 3. If the water-coal slurry is severely agglomerated, cleaning or unblocking operations can be performed.

[0038] like Figure 1 As shown, in one of the embodiments, the sampling device further includes a flushing water pipe 6 for flushing the buffer tube 3;

[0039] The flushing water pipe 6 is connected to the buffer pipe 3 .

[0040] In this embodiment, the flushing water pipe 6 is connected to the buffer tube 3. The flushing water pipe 6 is used to flush the water-coal slurry remaining or agglomerated in the buffer tube 3 after the sampling is completed. During the flushing, the sampling tube 4 is opened so that the water-coal slurry can flow out from the sampling tube 4. The flushed water-coal slurry can also be collected and enter the recovery tank for recycling. During the next sampling, there will be no excess water-coal slurry agglomerates clogging the buffer tube 3, which reduces the waste of water-coal slurry and the cost of personnel cleaning, and greatly improves the working environment around the water-coal slurry main pipe 1.

[0041] like Figure 1 As shown, in another embodiment, it further includes a first connecting pipe 7 connected between the buffer pipe 3 and the root valve 2;

[0042] The flushing water pipe 6 is connected to the first connecting pipe 7 .

[0043] In this embodiment, the old sampling device can be directly modified without stopping the machine for replacement. It only needs to install the first pipe 7 after the root valve 2 and then install the buffer tube 3 after the first pipe 7 to achieve the modification without stopping the machine. The first pipe 7 can be connected to the flushing water pipe 6 by a three-way connection or a hole can be directly opened on the first pipe 7.

[0044] Specifically, after the sampling is completed, water can be passed into the flushing water pipe 6 to flush the first connecting pipe 7 and the buffer tube 3 to prevent the water-coal slurry from agglomerating therein. The next sampling will not be blocked by excess water-coal slurry agglomerates, reducing the probability of water-coal slurry splashing during sampling, making it convenient for the sampling personnel to clean the sampling device and reducing labor costs.

[0045] like Figure 1 As shown, in one of the preferred embodiments, the flushing water pipe 6 is vertically connected to the first connecting pipe 7, and the length of the first connecting pipe 7 minus the length of the outer diameter of the flushing water pipe 6 is 50 to 60 mm.

[0046] In this preferred embodiment, the flushing water pipe 6 is vertically connected to the first connecting pipe 7, which can effectively prevent water-coal slurry from entering the flushing water pipe 6 during sampling. The length of the first connecting pipe 7 is as short as possible, sufficient to connect the flushing water pipe 6 and implement welding operations, thereby avoiding blockage of the first connecting pipe 7 due to excessive length of the pipe section.

[0047] like Figure 1 As shown, in another embodiment, an emergency dredging valve 8 for dredging the buffer pipe 3 is also included;

[0048] The emergency dredging valve 8 is connected to the buffer pipe 3 .

[0049] In this embodiment, an emergency unblocking valve 8 is further provided behind the buffer tube 3. When the sampling tube 4 is severely blocked or the pressure in the buffer tube 3 is too high, the emergency unblocking valve 8 can be opened to allow the water-coal slurry to flow out from the emergency unblocking valve 8, thereby reducing the pressure in the buffer tube 3, and collecting the water-coal slurry flowing out of the emergency unblocking valve 8 and putting it into a recovery tank for recycling, thereby reducing the waste of water-coal slurry.

[0050] like Figure 1 As shown, in another preferred embodiment, the axis of the emergency dredging valve 8, the axis of the first connecting pipe 7 and the axis of the root valve 2 are in the same straight line;

[0051] The emergency unblocking valve 8 is provided with unblocking parts for unblocking the first connecting pipe 7 , the buffer pipe 3 and the root valve 2 .

[0052] In this preferred embodiment, the emergency unblocking valve 8 is also provided with an unblocking piece, which can be a short stick, for extending the unblocking piece into the emergency unblocking valve 8 when blocked, so as to unblock the buffer tube 3, the first connecting pipe 7 and the root valve 2. In order to facilitate unblocking, it is also necessary to ensure that the axis of the emergency unblocking valve 8, the axis of the first connecting pipe 7 and the axis of the root valve 2 are in the same straight line, so as to facilitate the unblocking of the sampling device by the sampling personnel.

[0053] In one embodiment, the inner diameter of the emergency dredging valve 8 is 12 to 14 mm.

[0054] In this embodiment, the inner diameter of the emergency dredging valve 8 is 12 to 14 mm. This is because the dredging piece needs to enter the buffer tube 3 from the emergency dredging valve 8 for dredging. However, the valve diameter of the emergency dredging valve 8 should not be too large to prevent the water-coal slurry from splashing and leaking from the gap when using the dredging piece for dredging. The inner diameter of the dredging piece can be 6 to 8 mm, which should not be too thick or too thin.

[0055] like Figure 1 As shown, in one embodiment, the sampling tube 4 is connected to the bottom of the buffer tube 3.

[0056] In this embodiment, the sampling tube 4 is connected to the bottom of the buffer tube 3, which is conducive to sampling after the water-coal slurry enters the buffer tube 3. The water-coal slurry flows downward under the action of gravity, and no additional suction equipment is required, reducing equipment costs.

[0057] like Figure 1 As shown, in another embodiment, a second connecting pipe 9 is connected between the root valve 2 and the main pipe 1. The second connecting pipe 9 is vertically connected to the main pipe 1. The length of the second connecting pipe 9 is 50-100 mm.

[0058] In this embodiment, a second connecting pipe 9 is connected between the root valve 2 and the main pipe 1, and the length of the second connecting pipe 9 is 50 to 100 mm. Within this range, the water-coal slurry in the second connecting pipe 9 can be kept in a wet state at all times, preventing blockage between the root valve 2 and the main pipe 1 due to excessively long pipe sections.

[0059] As needed, the above technical solutions can be combined to achieve the best technical effect.

[0060] like Figure 1As shown, in a preferred embodiment, a second connecting pipe 9 is connected to the main pipe 1, and the second connecting pipe 9 is vertically connected to the main pipe 1. The length of the second connecting pipe 9 is 50-100 mm, and the second connecting pipe 9 is short enough so that the water-coal slurry in the second connecting pipe 9 is always in a wet state; the other end of the second connecting pipe 9 is connected to the root valve 2, and the other end of the root valve 2 is connected to the buffer pipe 3, and the buffer pipe 3 is connected to a sampling pipe 4, the inner diameter of the buffer pipe 3 is larger than the inner diameter of the root valve 2 and the inner diameter of the sampling pipe 4, and the buffer pipe 3 uses a pipe section of specifications such as DN80 or DN100, with a length of about 200 mm, to prevent the water-coal slurry from overflowing from the root valve 2, and at the same time, it can store part of the water-coal slurry, so that the water-coal slurry flowing out of the sampling pipe 4 flows out at a uniform speed, avoiding the sampling personnel from being splashed by the water-coal slurry when sampling, protecting the safety of the sampling personnel, and at the same time, the water-coal slurry will not splash everywhere, and there is no need to arrange additional manpower for cleaning and recovery.

[0061] An opening is provided at the top of the buffer tube 3, and a top cover 5 that can close the opening is installed at the opening. When the sampling device is blocked, the root valve 2 can be closed and the top cover 5 can be opened to observe the blockage in the buffer tube 3 from the opening to determine whether flushing or unblocking is required.

[0062] A first connecting pipe 7 is also connected between the buffer tube 3 and the root valve 2. The first connecting pipe 7 is connected to a flushing water pipe 6 through a tee. Alternatively, a hole can be directly opened on the first connecting pipe 7 to connect the flushing water pipe 6. The flushing water pipe 6 can provide water flow for the buffer tube 3 to flush the water-coal slurry agglomerated in the buffer tube 3. The flushed water-coal slurry is recovered at the sampling tube 4 and then transported to the recovery tank for recovery, thereby avoiding waste of water-coal slurry. The flushing water pipe 6 is vertically connected to the first connecting pipe 7. The length of the first connecting pipe 7 minus the length of the outer diameter of the flushing water pipe 6 is 50 to 60 mm. The length of the first connecting pipe 7 is as short as possible, which is sufficient to connect the flushing water pipe 6 and implement welding operations.

[0063] An emergency dredging valve 8 is also provided on the buffer tube 3. When the pressure in the buffer tube 3 is too high or the sampling tube 4 is blocked, the emergency dredging valve 8 can be opened for dredging. The emergency dredging valve 8 is also provided with a dredging piece, which can be a short stick for dredging the agglomeration of water-coal slurry between the first connecting pipe 7, the buffer tube 3 and the root valve 2. In order to facilitate dredging, the axis of the first connecting pipe 7, the axis of the emergency dredging valve 8 and the axis of the root valve 2 are on the same straight line.

[0064] In this application, it can be decided whether to replace the sampling device as a whole based on the on-site operating conditions and the shutdown and maintenance time window to meet the minimum size requirements of some connecting pipes. It can also be directly modified after the originally installed root valve 2, and the replacement can be carried out without stopping the vehicle.

[0065] The above description is only the principle and preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this field, the implementation methods obtained by appropriately combining the technical solutions disclosed in different embodiments are also included in the technical scope of the present invention. On the basis of the principle of the present application, several other variations can be made, which should also be regarded as the protection scope of the present application.

Claims

1. A sampling device for coal water slurry, characterized in that: The sampling device comprises a main pipe, a root valve connected to the main pipe, a buffer pipe and a sampling pipe; One end of the root valve is connected to the main pipe, and the other end is connected to the buffer tube. The sampling tube is connected to the buffer tube. The inner diameter of the buffer tube is larger than the inner diameter of the root valve and the inner diameter of the sampling tube.

2. A sampling device for coal water slurry according to claim 1, characterized in that: The top of the buffer tube is provided with an opening, and a top cover capable of closing the opening is installed on the opening.

3. A sampling device for coal water slurry according to claim 2, characterized in that: Also included is a flushing water pipe for flushing the buffer pipe; The flushing water pipe is connected to the buffer pipe.

4. A sampling device for coal water slurry according to claim 3, characterized in that: Also included is a first connecting pipe connected between the buffer pipe and the root valve; The flushing water pipe is connected to the first connecting pipe.

5. A sampling device for coal water slurry according to claim 4, characterized in that: The flushing water pipe is vertically connected to the first connecting pipe, and the length of the first connecting pipe minus the length of the outer diameter of the flushing water pipe is 50 to 60 mm.

6. A sampling device for coal water slurry according to claim 4, characterized in that: Also included is an emergency dredging valve for dredging the buffer pipe; The emergency dredging valve is connected to the buffer pipe.

7. A sampling device for coal water slurry according to claim 6, characterized in that: The axis of the emergency dredging valve, the axis of the first connecting pipe and the axis of the root valve are in the same straight line; The emergency unblocking valve is provided with an unblocking member for unblocking the first connecting pipe, the buffer pipe and the root valve.

8. A sampling device for coal water slurry according to claim 7, characterized in that: The inner diameter of the emergency dredging valve is 12 to 14 mm.

9. A sampling device for coal water slurry according to claim 1, characterized in that: The sampling tube is connected to the bottom of the buffer tube.

10. A sampling device for coal water slurry according to claim 1, characterized in that: A second connecting pipe is connected between the root valve and the main pipe. The second connecting pipe is vertically connected to the main pipe. The length of the second connecting pipe is 50-100 mm.

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