CN113686616A - Pulverized coal sampling device - Google Patents
Pulverized coal sampling device Download PDFInfo
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- CN113686616A CN113686616A CN202110965385.5A CN202110965385A CN113686616A CN 113686616 A CN113686616 A CN 113686616A CN 202110965385 A CN202110965385 A CN 202110965385A CN 113686616 A CN113686616 A CN 113686616A
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- sampling
- pipe
- tube
- blocking
- pulverized coal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to a pulverized coal sampling device, which comprises a sampling unit, wherein the sampling unit comprises a sampling pipe and a sampling auxiliary unit, the sampling auxiliary unit comprises at least one of a powder spraying prevention module and an anti-blocking module, the powder spraying prevention module comprises a pipe seat and a blocking assembly, the pipe seat is provided with a pipe cavity penetrating through two ends of the pipe seat, a hole opening is formed in the pipe cavity, the blocking assembly comprises a blocking piece, the blocking piece is connected in the pipe cavity and used for opening and closing the hole opening, and when the sampling pipe penetrates into the hole opening, the blocking piece opens the hole opening; when the sampling tube is separated from the orifice, the blocking piece closes the orifice and blocks the tube cavity of the tube seat; the anti-clogging module comprises a heating element, and the heating element comprises a first heating element connected to the sampling tube. The invention effectively prevents pulverized coal injection, avoids environmental pollution and protects health; the temperature of the device is effectively improved during sampling, and the phenomenon of blocking and caking in the pulverized coal sampling gun is prevented; simple structure, convenient and fast, and does not influence the continuous use of the prior device and structure.
Description
Technical Field
The invention relates to the field of coal-fired power plants, in particular to a coal powder sampling device.
Background
At present, sampling holes designed for primary air powder pipes of coal-fired power plants are mostly pipe seats and matched pipe plugs, and because the primary air powder pipes are in positive pressure, when the measuring holes are opened, hot air of the air powder pipes can be sprayed out by carrying a large amount of fine coal powder, so that the surrounding environment is seriously polluted, and the human health is seriously harmed. And the environmental temperature is lower, can be less than the dew point temperature of buggy air mixture usually, and the moisture condensation phenomenon in the buggy takes place easily at buggy sampling in-process in current device, leads to the buggy caking, influences buggy sample.
Disclosure of Invention
The invention aims to provide a coal powder sampling device.
In order to achieve the purpose, the invention adopts the technical scheme that:
a coal powder sampling device comprises a sampling unit, wherein the sampling unit comprises a sampling tube, the device also comprises a sampling auxiliary unit, the sampling auxiliary unit comprises at least one of a powder spraying prevention module and an anti-blocking module,
the powder spray preventing module comprises a pipe seat and a blocking assembly, wherein the pipe seat is provided with a pipe cavity penetrating through two ends of the pipe seat, a hole is formed in the pipe cavity, the blocking assembly comprises a blocking piece, the blocking piece is connected in the pipe cavity and used for opening and closing the hole, and when the sampling pipe penetrates into the hole, the blocking piece opens the hole; when the sampling tube is separated from the hole, the blocking piece closes the hole and cuts off the tube cavity of the tube seat;
the anti-blocking module comprises a heating element, and the heating element comprises a first heating element connected to the sampling tube.
Preferably, the blocking assembly further comprises an elastic member, one end of the elastic member is connected with the lumen, the other end of the elastic member is connected with the blocking member, and the elastic member always gives an elastic force for closing the orifice with the blocking member.
Preferably, the tube seat is provided with an airflow channel, the airflow channel is communicated with the tube cavity, and the airflow channel is used for communicating a compressed air source.
Further preferably, the airflow channel is provided with an inlet and an outlet, the inlet of the airflow channel is arranged on the outer wall surface of the tube seat, and the outlet of the airflow channel is arranged on the cavity wall of the tube cavity and extends around the axial direction of the tube cavity.
Further preferably, a valve is arranged on the airflow channel, and the valve is arranged at the inlet of the airflow channel.
Preferably, the powder spray prevention module further comprises a sealing cover and a sealing element, the sealing cover is covered at one end of the tube seat, the sealing element is arranged between the sealing cover and the sealing lock assembly, and the sealing cover and the sealing element are provided with openings through which the sampling tube passes.
Preferably, the anti-clogging module further comprises a temperature control member, and the temperature control member is connected with the heating member.
Preferably, the sampling unit further comprises a collection container and a connecting pipe, wherein the collection container is communicated with the sampling pipe through the connecting pipe.
Further preferably, the heating member further includes a second heating member, and the second heating member is wrapped around the outer circumferential surface of the connecting pipe.
Preferably, the first heating element is arranged in the sampling pipe and extends spirally along the axial direction of the sampling pipe.
Preferably, the cavity wall of the cavity is provided with a mounting part, and the blocking piece is rotatably connected to the mounting part.
Further preferably, the aperture opens onto the mounting portion.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
the invention effectively prevents pulverized coal injection, avoids environmental pollution and protects health; the temperature of the device is effectively improved during sampling, and the phenomenon of blocking and caking in the pulverized coal sampling gun is prevented; simple structure, convenient and fast, and does not influence the continuous use of the prior device and structure.
Drawings
FIG. 1 is a schematic view of the present embodiment (the anti-clog module is not shown) when attached to a pipe;
fig. 2 is a schematic diagram of the sample unit and the anti-clogging module in this embodiment.
In the above drawings: 1. a pipeline; 11. a connection base; 12. a ball valve; 21. a sampling tube; 22. a collection container; 23. a connecting pipe; 31. a tube holder; 311. an installation part; 312. an air flow channel; 313. a valve; 32. a sealing cover; 33. a seal member; 341. a locking piece; 342. an elastic member; 41. a power source; 42. a temperature control member; 43. a first heating member; 44. a second heating member; 5. compressing a gas source; 6. and an air extracting device.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in figures 1 and 2, the pulverized coal sampling device comprises a sampling unit and a sampling auxiliary unit, wherein the sampling unit is used for the positive pressure pipeline 1 and the condition that the dew point temperature of pulverized coal mixed airflow in the pipeline 1 is higher than the ambient temperature, and the sampling auxiliary unit is used for helping the sampling unit to sample and avoid air and powder from being sprayed out and preventing pulverized coal from caking in the sampling unit.
The sampling unit includes sampling tube 21, collecting container 22 and connecting pipe 23, the one end of sampling tube 21 is used for stretching into in pipeline 1, the other end and the one end intercommunication of connecting pipe 23, the other end and the collecting container 22 intercommunication of connecting pipe 23, collecting container 22 collects the buggy that sampling tube 21 sampled through connecting pipe 23, connect air exhaust device 6 on collecting container 22 and bleed air to collecting container 22, can help collecting container 22 to collect the more abundant of buggy in the sampling tube 21. To ensure a more complete and complete collection, the collection containers 22 and the connecting tubes 23 can be arranged in multiple sets and connected in series, the connecting tubes 23 in the latter set being connected to the collection containers 22 in the former set, and the suction device 6 being connected to the collection containers 22 in the last set. Usually, be provided with connection base 11 on the pipeline 1, be equipped with ball valve 12 on the connection base 11, when the sampling 21 was taken a sample, open ball valve 12, the one end of sampling 21 passes connection base 11 and stretches into and take a sample in pipeline 1, and connection base 11 is usually connected with other parts through the screw thread.
The sampling auxiliary unit comprises an anti-powder spraying module and an anti-blocking module.
As shown in fig. 1, the powder sprayproof module includes a pipe socket 31, a blockade assembly, a sealing cap 32, and a sealing member 33, the pipe socket 31 being used to connect with the connection base 11 on the pipe 1.
The sealing cap 32 covers one end of the tube seat 31, the sealing cap 32 is in threaded connection with the tube seat 31, the sealing cap 32 is provided with an opening through which the sampling tube 21 passes, in this embodiment, the sealing cap 32 is an internal thread, one end of the tube seat 31 is an external thread, so that the connection between the sealing cap 32 and the tube seat 31 is aligned when the sampling tube is installed, and the sealing cap 32 and the tube seat 31 are made of carbon steel or stainless steel. The other end of tube socket 31 is used for being connected with connection base 11, and both pass through threaded connection, can closely laminate, prevent that the wind powder from leaking, and in this embodiment, the other end of tube socket 31 is the external screw thread, and connection base 11 is the internal thread.
The tube seat 31 has a tube cavity penetrating through two ends thereof, a hole is arranged in the tube cavity, the sampling tube 21 needs to pass through the hole when passing through the tube cavity, a mounting part 311 is arranged on the wall of the tube cavity, and the hole is arranged on the mounting part 311. The blockade assembly includes a blockade member 341 and an elastic member 342, the blockade member 341 is connected in the tube cavity and used for opening and closing the hole, the blockade member 341 is rotatably connected to the mounting portion 311, the blockade member 341 rotates in the axial direction of the tube seat 31 to open and close the hole, one end of the elastic member 342 is connected to the tube cavity and can be connected to the mounting portion 311, the other end of the elastic member 342 is connected to the blockade member 341, the elastic member 342 always gives the elastic force of the blockade member 341 for closing the hole, and the blockade member 341 opens toward the direction close to the other end of the tube seat 31. When the sampling tube 21 penetrates the opening, the sampling tube 21 pushes the locking piece 341 open, and the locking piece 341 opens the opening; when the sampling tube 21 is separated from the opening, the locking member 341 receives the elastic force of the elastic member 342, and the locking member 341 automatically rebounds to close the opening and block the lumen of the tube seat 31 from the opening, thereby preventing the wind powder from being sprayed out. In this embodiment, the mounting portion 311 is a circular ring with a circular hole at the center, the locking member 341 is a circular plate with a size capable of covering the circular hole on the circular ring, the surface of the circular plate is perpendicular to the axis of the tube seat 31 when the circular plate is closed, the mounting portion 311 and the locking member are made of carbon steel or stainless steel, and the elastic member 342 is made of a spring or a torsion spring. The sealing member 33 is disposed between the sealing cover 32 and the sealing member, the sealing member 33 is provided with a mouth portion through which the sampling tube 21 passes, and the sealing member 33 may be made of felt and may absorb wind powder which may leak between the mounting portion 311, the sealing member 341 and the wall of the lumen.
The tube seat 31 is provided with an air flow channel 312, the air flow channel 312 is communicated with the tube cavity, the air flow channel 312 is used for communicating a compressed air source 5 to inject compressed air into the tube cavity, and the compressed air forms an air curtain and has the function of blocking air powder from passing through. The airflow channel 312 has an inlet and an outlet, the inlet of the airflow channel 312 is arranged on the outer wall surface of the tube seat 31, the outlet of the airflow channel 312 is arranged on the wall surface of the tube cavity and extends around the axial direction of the tube cavity, the inlets of the airflow channel 312 are arranged one by one, and the outlet of the airflow channel 312 is arranged around the wall surface of the tube cavity for one circle. The outlet of the airflow channel 312 is located between the blocking assembly and the other end of the tube seat 31, and the wind powder is blocked by the blocking member 341 after being blocked by the wind curtain. The air flow channel 312 is provided with a valve 313, and the valve 313 is disposed at the inlet of the air flow channel 312.
As shown in fig. 2, the anti-clogging module includes a heating member, a temperature control member 42, and a power supply 41, wherein the power supply 41 is connected to the temperature control member 42, and the temperature control member 42 is connected to the heating member. The heating parts comprise a first heating part 43 connected to the sampling pipe 21 and a second heating part 44 connected to the connecting pipe 23, the temperature control part 42 can respectively control the temperatures of the first heating part 43 and the second heating part 44 to be higher than the dew point temperature of the air-powder mixed air flow in the sampling pipe 21, so as to prevent condensation, and in the embodiment, resistance wires are adopted as the first heating part 43 and the second heating part 44. The first heating member 43 is disposed in the sampling pipe 21 and spirally extends in the axial direction of the sampling pipe 21, and the second heating member 44 is wrapped on the outer circumferential surface of the connection pipe 23.
The working principle of the present embodiment is specifically described below, as shown in fig. 1 and 2:
s1: before coal powder sampling, the ball valve 12 on the connecting base 11 of the pipeline 1 is in a closed state, the powder blowout preventing module is connected to the connecting base 11 of the pipeline 1, the valve 313 on the airflow channel 312 is opened, the airflow channel 312 is communicated with the on-site compressed air source 5, and then the ball valve 12 on the connecting base 11 is opened.
S2: and (3) turning on a power supply 41, controlling the temperatures of the first heating element 43 and the second heating element 44 to 60-70 ℃ by using a temperature control element 42, inserting the sampling pipe 21 into the powder spraying prevention module, poking the locking element 341, then entering the pipeline 1, and sampling pulverized coal.
S3: after the sampling of the collection container 22 is finished, the sampling tube 21 is pulled out, the locking piece 341 automatically rebounds to the vertical state, the opening is closed, the ball valve 12 on the connecting base 11 is closed, the compressed air source 5 is removed, the valve 313 on the airflow channel 312 is closed, and finally the powder spraying prevention module is screwed off, and the whole process is finished.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. The utility model provides a buggy sampling device, includes the sampling unit, the sampling unit include the sampling tube, its characterized in that: the device also comprises a sampling auxiliary unit, the sampling auxiliary unit comprises at least one of a powder spraying prevention module and an anti-blockage module,
the powder spray preventing module comprises a pipe seat and a blocking assembly, wherein the pipe seat is provided with a pipe cavity penetrating through two ends of the pipe seat, a hole is formed in the pipe cavity, the blocking assembly comprises a blocking piece, the blocking piece is connected in the pipe cavity and used for opening and closing the hole, and when the sampling pipe penetrates into the hole, the blocking piece opens the hole; when the sampling tube is separated from the hole, the blocking piece closes the hole and cuts off the tube cavity of the tube seat;
the anti-blocking module comprises a heating element, and the heating element comprises a first heating element connected to the sampling tube.
2. The pulverized coal sampling device according to claim 1, characterized in that: the blocking assembly further comprises an elastic piece, one end of the elastic piece is connected with the tube cavity, the other end of the elastic piece is connected with the blocking piece, and the elastic piece always gives elastic force for closing the hole opening together with the blocking piece.
3. The pulverized coal sampling device according to claim 1, characterized in that: the tube seat is provided with an airflow channel which is communicated with the tube cavity and is used for communicating a compressed air source.
4. The pulverized coal sampling device according to claim 3, characterized in that: the airflow channel is provided with an inlet and an outlet, the inlet of the airflow channel is arranged on the outer wall surface of the tube seat, and the outlet of the airflow channel is arranged on the wall of the tube cavity and extends around the axial direction of the tube cavity.
5. The pulverized coal sampling device according to claim 3, characterized in that: the air flow channel is provided with a valve, and the valve is arranged at the inlet of the air flow channel.
6. The pulverized coal sampling device according to claim 1, characterized in that: the powder spraying prevention module further comprises a sealing cover and a sealing element, the sealing cover is covered at one end of the tube seat, the sealing element is arranged between the sealing cover and the sealing lock assembly, and the sealing cover and the sealing element are provided with openings for the sampling tube to pass through.
7. The pulverized coal sampling device according to claim 1, characterized in that: the anti-blocking module further comprises a temperature control part, and the temperature control part is connected with the heating part.
8. The pulverized coal sampling device according to claim 1, characterized in that: the sampling unit also comprises a collecting container and a connecting pipe, wherein the collecting container is communicated with the sampling pipe through the connecting pipe.
9. The pulverized coal sampling device according to claim 8, characterized in that: the heating member still include the second heating member, the second heating member parcel in the outer peripheral face of connecting pipe.
10. The pulverized coal sampling device according to claim 1, characterized in that: the first heating element is arranged in the sampling pipe and spirally extends along the axial direction of the sampling pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110965385.5A CN113686616A (en) | 2021-08-23 | 2021-08-23 | Pulverized coal sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110965385.5A CN113686616A (en) | 2021-08-23 | 2021-08-23 | Pulverized coal sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113686616A true CN113686616A (en) | 2021-11-23 |
Family
ID=78581205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110965385.5A Pending CN113686616A (en) | 2021-08-23 | 2021-08-23 | Pulverized coal sampling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113686616A (en) |
-
2021
- 2021-08-23 CN CN202110965385.5A patent/CN113686616A/en active Pending
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