CN218470298U - Dust sampling head - Google Patents
Dust sampling head Download PDFInfo
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- CN218470298U CN218470298U CN202222592231.9U CN202222592231U CN218470298U CN 218470298 U CN218470298 U CN 218470298U CN 202222592231 U CN202222592231 U CN 202222592231U CN 218470298 U CN218470298 U CN 218470298U
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Abstract
The utility model belongs to the technical field of the pollutant monitoring, a dust sampling head is disclosed. The dust sampling head comprises a sampling tube, a speed measuring device and a temperature measuring device; one end of the sampling tube is detachably provided with a dust sampling nozzle, the other end of the sampling tube is rotatably connected with a sampling pipeline of the detection device, and the dust sampling nozzle is used for sampling dust in the gas to be detected; the speed measuring device is fixedly connected to the outer wall of the sampling tube and is used for measuring the flow velocity of the gas to be measured; the temperature measuring device is fixedly connected to the outer wall of the sampling tube and used for measuring the temperature of the gas to be measured. The dust sampling head of the utility model can change different dust sampling nozzles according to different requirements, and can adjust the angle between the dust sampling nozzle and the flowing direction of the gas to be measured, thereby finding the optimal measuring angle and obtaining more accurate measuring results; meanwhile, the flow velocity and the temperature of the gas to be detected can be measured respectively, and the gas to be detected can be analyzed accurately after sampling.
Description
Technical Field
The utility model relates to a pollutant monitoring technology field especially relates to a dust sampling head.
Background
In the particulate monitoring of a fixed pollution source, high-temperature and high-corrosivity waste gas discharged from a pollution source discharge port needs to be extracted from a discharge port chimney and conveyed to an optical instrument for measuring the concentration of particulate matters. Because different particle pollutants are different in size, the sampling nozzles with different apertures need to be replaced according to different use scenes. The existing sampling head is complex in structure and high in processing difficulty, and only can sample dust, so that parameters such as flow speed, temperature and the like at a pollutant source discharge port cannot be analyzed simultaneously, and detailed parameters of pollutants at the position cannot be analyzed accurately.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a dust sampling head, its simple structure can carry out the measurement of multiple parameter to the pollution sources simultaneously, is applicable to different use scenes.
To achieve the purpose, the utility model adopts the following technical proposal:
the dust sampling head comprises a sampling tube, a speed measuring device and a temperature measuring device; one end of the sampling tube is detachably provided with a dust sampling nozzle, the other end of the sampling tube is rotatably connected with a sampling pipeline of the detection device, and the dust sampling nozzle is used for sampling dust in the gas to be detected; the speed measuring device is fixedly connected to the outer wall of the sampling tube and is used for measuring the flow velocity of the gas to be measured; the temperature measuring device is fixedly connected to the outer wall of the sampling tube and is used for measuring the temperature of the gas to be measured.
Optionally, the dust sampling nozzle is threadedly connected to the sampling tube.
Optionally, the sampling tube is mounted on the sampling tube by a locking nut.
Optionally, the speed measuring device includes a pitot tube, and the pitot tube is disposed on an outer wall of the sampling tube.
Optionally, the pitot tube is provided with a plurality of pitot tubes, and the plurality of pitot tubes are uniformly distributed at intervals.
Optionally, the pitot tube is welded to an outer wall of the sampling tube.
Optionally, the temperature measuring device is a temperature measuring probe.
Optionally, the temperature measuring probe is covered with a temperature measuring protective sleeve.
Optionally, the dust sampling nozzle is of a conical structure.
Optionally, the sampling tube and the dust sampling nozzle are both made of metal.
Has the advantages that:
the dust sampling head of the utility model can change different dust sampling nozzles according to different requirements by detachably connecting the dust sampling nozzle to the sampling tube, and the change is very convenient; in addition, the sampling pipe is rotatably connected to the sampling pipeline, and the angle between the dust sampling nozzle and the flowing direction of the gas to be measured can be adjusted according to the requirement, so that the optimal measurement angle can be found, and the measurement result is more accurate; simultaneously, the sampling tube outer wall still is provided with speed sensor and temperature measuring device, and speed sensor and temperature measuring device can measure the velocity of flow and the temperature of the gas that awaits measuring respectively, carry out accurate analysis to the gas that awaits measuring after the convenient sampling to obtain the multiple parameter including the gas dust particle size that awaits measuring, more be favorable to the parametric analysis of pollutant.
Drawings
FIG. 1 is an isometric view of a dust sampling head provided in accordance with an embodiment of the present invention;
fig. 2 is a side view of a dust sampling head according to an embodiment of the present invention.
In the figure:
10. a sampling tube; 11. a dust sampling nozzle; 12. locking the nut; 20. a pitot tube; 30. a temperature protection sleeve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures associated with the present invention are shown in the drawings, not all of them.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element 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" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
Referring to fig. 1 and fig. 2, in the present embodiment, the dust sampling head includes a sampling tube 10, a speed measuring device and a temperature measuring device; one end of the sampling tube 10 is detachably provided with a dust sampling nozzle 11, the other end of the sampling tube is rotatably connected with a sampling pipeline of the detection equipment, and the dust sampling nozzle 11 is used for sampling dust in gas to be detected; the speed measuring device is fixedly connected to the outer wall of the sampling tube 10 and is used for measuring the flow velocity of the gas to be measured; the temperature measuring device is fixedly connected to the outer wall of the sampling tube 10 and is used for measuring the temperature of the gas to be measured.
In the dust sampling head in the embodiment, the dust sampling nozzle 11 is detachably connected to the sampling tube 10, so that different dust sampling nozzles 11 can be replaced according to different requirements, and the replacement is very convenient; moreover, the sampling tube 10 is rotatably connected to the sampling pipeline, the sampling tube 10 in the prior art is in a bent tube shape with a certain angle (90 degrees as shown in fig. 2), and the repeated description is omitted here, so that an operator can adjust the angle between the dust sampling nozzle 11 and the flowing direction of the gas to be measured according to the requirement by rotating the sampling tube 10, thereby finding the optimal measurement angle, and the measurement result is more accurate; simultaneously, the outer wall of sampling tube 10 still is provided with speed sensor and temperature measuring device, and speed sensor and temperature measuring device can measure the velocity of flow and the temperature of the gas that awaits measuring respectively, carry out accurate analysis to the gas that awaits measuring after the convenient sampling to obtain the multiple parameter including the gas dust particle size that awaits measuring, more be favorable to the parameter analysis of pollutant.
Alternatively, the dust sampling nozzle 11 is screwed to the sampling tube 10. The dust sampling nozzle 11 that sets up like this dismantles, installs more conveniently, conveniently changes the dust sampling nozzle 11 of different models to make this dust sampling head be applicable to different service environment.
In a preferred embodiment, the sampling tube 10 is mounted to the sampling tube by a retaining nut 12. The lock nut 12 can not only reliably install the sampling tube 10 on the sampling pipeline, but also the lock nut 12 can drive the sampling tube 10 to rotate on the sampling pipeline through the rotation of the lock nut 12, so that the sampling angle can be conveniently changed and the lock can be conveniently realized.
Optionally, the speed measuring device includes a pitot tube 20, and the pitot tube 20 is disposed on an outer wall of the sampling tube 10. Specifically, the pitot tube 20 is provided in plural, and the plurality of pitot tubes 20 are uniformly spaced apart from each other. Further, the pitot tube 20 is welded to the outer wall of the sampling tube 10. In the present embodiment, two pitot tubes 20 are provided, and the two pitot tubes 20 are respectively welded to both sides of the sampling tube 10. The pitot tubes 20 can measure the speed of the gas to be measured simultaneously, so that the measurement accuracy of the speed parameters can be improved, and a user can accurately analyze the gas to be measured.
Referring to fig. 2, the temperature measuring device may be a temperature measuring probe (not shown). Specifically, the temperature measuring probe is covered with a temperature measuring protective sleeve. On this temperature measurement protective sheath was fixed in sampling tube 10, the temperature probe penetrated inside the temperature measurement protective sheath to make the temperature probe install on sampling tube 10, the temperature measurement protective sheath protected the temperature probe, prevented that the particulate matter in the gas that awaits measuring from damaging the temperature probe.
Preferably, the dust sampling nozzle 11 has a tapered structure. Its footpath of conical dust sample mouth 11 is crescent along the air current direction of flow, certainly also can be ball shape structure or oval sphere structure, can reduce the air current resistance that dust sample mouth 11 placed in the gas that awaits measuring, makes things convenient for dust sample mouth 11 to follow unobstructed extraction gas that awaits measuring in the gas that awaits measuring, prevents that the pipeline from blockking up.
Alternatively, the sampling tube 10 and the dust sampling nozzle 11 are made of metal members. Specifically, the sampling tube 10, the dust sampling nozzle 11, the pitot tube 20 and the temperature measurement protective sleeve are all made of stainless steel, such as 316L stainless steel, so that the dust sampling head can be used in a high-temperature gas environment to be measured, and the service life is prolonged.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements, and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. Dust sampling head, its characterized in that includes:
the dust sampling device comprises a sampling tube (10), wherein one end of the sampling tube (10) is detachably provided with a dust sampling nozzle (11), the other end of the sampling tube is rotatably connected with a sampling pipeline of detection equipment, and the dust sampling nozzle (11) is used for sampling dust in gas to be detected;
the speed measuring device is fixedly connected to the outer wall of the sampling tube (10) and is used for measuring the flow velocity of the gas to be measured;
and the temperature measuring device is fixedly connected to the outer wall of the sampling tube (10) and is used for measuring the temperature of the gas to be measured.
2. Dust sampling head according to claim 1, characterized in that the dust sampling nozzle (11) is screwed to the sampling tube (10).
3. The dust sampling head of claim 1, wherein the sampling tube (10) is mounted to the sampling tube by a locking nut (12).
4. The dust sampling head of claim 1, wherein the velocity measuring device comprises a pitot tube (20), and the pitot tube (20) is disposed on an outer wall of the sampling tube (10).
5. The dust sampling head of claim 4, wherein the pitot tube (20) is provided in a plurality, and the plurality of pitot tubes (20) are evenly spaced apart.
6. The dust sampling head of claim 4, wherein the pitot tube (20) is welded to the outer wall of the sampling tube (10).
7. The dust sampling head of claim 1, wherein the temperature measuring device is a temperature probe.
8. The dust sampling head of claim 7, wherein the temperature probe is covered with a temperature measuring protective sleeve.
9. Dust sampling head according to any of claims 1 to 8, characterized in that the dust sampling nozzle (11) is of conical structure.
10. The dust sampling head of any of claims 1 to 8, wherein the sampling tube (10) and the dust sampling nozzle (11) are both made of metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222592231.9U CN218470298U (en) | 2022-09-29 | 2022-09-29 | Dust sampling head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222592231.9U CN218470298U (en) | 2022-09-29 | 2022-09-29 | Dust sampling head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218470298U true CN218470298U (en) | 2023-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222592231.9U Active CN218470298U (en) | 2022-09-29 | 2022-09-29 | Dust sampling head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218470298U (en) |
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2022
- 2022-09-29 CN CN202222592231.9U patent/CN218470298U/en active Active
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