CN212159236U - Gas taking device of coal mine gas drainage sensor - Google Patents
Gas taking device of coal mine gas drainage sensor Download PDFInfo
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- CN212159236U CN212159236U CN202020297424.XU CN202020297424U CN212159236U CN 212159236 U CN212159236 U CN 212159236U CN 202020297424 U CN202020297424 U CN 202020297424U CN 212159236 U CN212159236 U CN 212159236U
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Abstract
The utility model relates to a colliery gas drainage sensor gets gas device, including the sensor installation component that is used for connecting the pipe connection seat subassembly of taking out the drainage pipeline, is used for the automatic extraction to take out the gas subassembly of getting of taking out gas in the drainage pipeline and be used for connecting the sensor. The gas taking device of the coal mine gas drainage sensor is simple in structure, free of maintenance, high in reliability and not prone to blocking, is suitable for being used in an underground drainage pipeline (negative pressure) field of a coal mine gas drainage system, and guarantees sampling accuracy.
Description
The technical field is as follows:
the utility model relates to an industrial and mining equipment technical field especially relates to a coal mine gas is taken out and is put sensor negative pressure pipeline and simply get gas device.
Background art:
the mixed gas in the underground extraction pipeline of the coal mine gas extraction system has the conditions of more coal ash and high humidity, and the mode that the gas sample of the original gas extraction device is directly injected to the sensor probe has some defects: 1. the coal ash is piled up and needs often to be cleared up on sensor probe surface, 2, when there is the difference in temperature or gas appearance humidity great with ambient temperature for gas appearance, a large amount of gas appearance gets into and easily produces the comdenstion water in the sensor probe, causes the precision and the life-span of gas class sensor to receive influence and harm.
At present, the gas taking devices are mainly divided into two types: 1. the mode of adopting little sampling hole reduces the tolerance, but easily blocks up the sampling tube under the effect of steam or comdenstion water. 2. The complex structural design realizes cooling and dust removal, and the cost is high because the maintenance and the cleaning are frequently needed.
The utility model has the following contents:
the utility model aims at the above problem, a install gas taking device on gas drainage system takes out and adopts pipeline (negative pressure) in pit is proposed, integral type project organization is simple, installation convenient to use, non-maintaining.
The utility model discloses a realize through following technical scheme: a gas taking device of a coal mine gas drainage sensor comprises a pipeline connecting seat assembly used for connecting an extraction pipeline, a gas taking assembly used for automatically extracting gas in the extraction pipeline and a sensor mounting assembly used for connecting the sensor;
the pipeline connecting seat assembly comprises a pipeline connecting seat body, a first sealing ring and a first clamp, the pipeline connecting seat body is fixed on the extraction pipeline, the first sealing ring is arranged at the top end of the pipeline connecting seat body, and the pipeline connecting seat body can be detachably connected with the gas taking assembly through the first clamp;
the gas taking assembly comprises a main shell, two differential pressure baffles, gas pipes and a filter body, wherein a cavity is formed in the main shell, the bottom end of the main shell can be detachably connected with a pipeline connecting seat body through a first clamp, the number of the gas pipes is two, the gas pipes are fixed at the bottom end of the main shell, the top ends of the gas pipes are communicated with the cavity in the main shell, the bottom ends of the gas pipes are oblique notches inclined to the horizontal plane, the two oblique notches are oppositely arranged, the bottom ends of the gas pipes can be communicated with an extraction pipeline through the pipeline connecting seat body, the differential pressure baffles are fixed at the bottom end of the main shell and arranged between the two gas pipes, the bottom ends of the differential pressure baffles are lower than the bottom ends;
the sensor installation component comprises a second sealing ring and a second hoop, the second sealing ring is arranged on the top end of the filter body, and the filter body can be detachably connected with the sensor through the second hoop.
In order to facilitate the disassembly of the pipeline connecting seat assembly and the gas taking assembly and ensure the connection tightness, the top end of the pipeline connecting seat body is provided with a first mounting disc, and a groove capable of being embedded into a first sealing ring is formed in the first mounting disc; the main casing body bottom has the second mounting disc, sets up the recess that can imbed first sealing washer in the second mounting disc, can dismantle through first clamp and be connected between first mounting disc and the second mounting disc.
In order to guarantee the accuracy nature that detects, the utility model discloses a secondary filter can filter most impurity, the filter body includes the first order filter body and the second level filter body, the first order filter body is fixed in the cavity of the main casing body, and outside the first order filter body top extended to the main casing body, the second level filter body sets up in first filtration, and the diameter of the filtration pore of crossing on the first order filter body is greater than the diameter of the filtration pore of crossing on the second level filter body.
In order to facilitate the disassembly of the gas taking assembly and the sensor mounting assembly and ensure the connection tightness, the top end of the first-stage filter body is provided with a third mounting disc, a groove capable of being embedded into a second sealing ring is formed in the third mounting disc, and the third mounting disc is detachably connected with the sensor through a second clamp.
For the convenience of first order filter body and second level filter body realization dismantlement, first order filter body inner wall is provided with annular brace table and annular groove, annular brace table is used for supporting second level filter body top, the annular groove sets up in annular brace table top, and the annular groove is embedded to have circlip, circlip presses second level filter body dress on annular brace table.
The gas taking method of the gas taking device of the coal mine gas drainage sensor comprises the following steps:
(1) firstly, mounting a pipeline connecting seat assembly on an extraction pipeline;
(2) then inserting the gas taking assembly into the pipeline connecting seat assembly and communicating the gas taking assembly with the inner cavity of the extraction pipeline;
(3) the gas flow flowing in the extraction pipeline forms a high-pressure area and a low-pressure area on two sides of the differential pressure baffle respectively, the high-pressure gas enters the cavity of the main shell through one of the gas pipes, part of the gas reaches the probe part of the sensor after secondary filtration for measurement, and the redundant gas returns to the extraction pipeline through the other gas pipe.
The utility model has the advantages that: the gas taking device of the coal mine gas drainage sensor is simple in structure, free of maintenance, high in reliability and not prone to blocking, is suitable for being used in an underground drainage pipeline (negative pressure) field of a coal mine gas drainage system, and guarantees sampling accuracy.
Description of the drawings:
fig. 1 is a schematic structural view of a gas taking device of a coal mine gas drainage sensor of the utility model;
fig. 2 is a schematic perspective view of the air intake assembly of the present invention;
fig. 3 is a cross-sectional view of the gas extraction assembly of the present invention;
fig. 4 is the structure schematic diagram of the coal mine gas drainage sensor gas taking device in use.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention can be clearly and clearly defined.
The gas taking device for the coal mine gas drainage sensor comprises a pipeline connecting seat assembly, a gas taking assembly and a sensor mounting assembly, wherein the pipeline connecting seat assembly is used for connecting an extraction pipeline, the gas taking assembly is used for automatically extracting gas in the extraction pipeline, and the sensor mounting assembly is used for connecting a sensor, and the pipeline connecting seat assembly is sequentially arranged from bottom to top.
The pipe connection seat subassembly includes pipe connection seat body 32, first sealing washer 33 and first clamp 31, and pipe connection seat body 32 adopts 304 stainless steel processing, and the welding dress is directly over taking out the drainage pipeline during the construction, and its bottom is cylindric, and the top is discoid first mounting disc 321 of formation, set up the recess that can imbed first sealing washer 33 in the first mounting disc 321, the pipe connection seat upper end adopts phi 64 size fast-assembling clamp (first clamp 31), and the design can be got the gas subassembly with upper portion and pass through the quick installation of clamp spare and dismantle. The pipeline connecting seat body 32 and the gas taking assembly are sealed by a first sealing ring 33 to prevent gas leakage.
As shown in fig. 1-3, the gas extraction assembly includes a main housing 34, a differential pressure baffle 36, a gas pipe 35, and a filter. The main casing body 34 is cylindrical, and the inside cavity that has, and main casing body 34 bottom has the second mounting disc 341 with first mounting disc 321 assorted, has seted up the recess that can imbed first sealing washer 33 in the second mounting disc 341, can dismantle through first clamp 31 between first mounting disc 321 and the second mounting disc 341 and be connected to realize sealing through first sealing washer 33. The number of the air pipes 35 is two, the top ends of the air pipes 35 are inserted into the bottom end of the main shell 34 and welded with the main shell 34, the bottom end of the main shell 34 is provided with two through holes 342, and the two air pipes 35 are communicated with a cavity in the main shell 34 through the two through holes 342; the trachea 35 bottom is the scarf with the horizontal plane looks slope, and two scarf set up relatively, and trachea 35 is not cylindricly promptly, and the gas port 351 (air inlet or the gas outlet) of its bottom is the slope form, and the cross-section of two gas ports 351 is the setting of V font, trachea 35 bottom accessible pipe connection seat body 32 with take out and adopt the pipeline intercommunication. The differential pressure baffle 36 is thin plate-shaped and fixed at the bottom end of the main housing 34 and arranged between the two air pipes 35, so that the two air pipes 35 are symmetrically arranged at two sides of the differential pressure baffle 36, and the bottom end of the differential pressure baffle 36 is lower than the bottom ends of the two air pipes 35, that is, the length of the downward extension of the differential pressure baffle 36 is greater than the maximum length of the air pipes 35. The two gas pipes 35 are symmetrically designed into non-branch gas exhaust pipes, the gas flow flowing in the gas extraction pipe forms a high-pressure area at the front part of the differential pressure baffle plate 36, a low-pressure area at the rear part, and the high-pressure gas is communicated with the gas exhaust pipesThe general gas pipe 35 passing through the side enters the device and returns to the extraction pipeline from the general gas pipe 35 at the other side, so that the function of collecting gas samples is realized. The inner diameter of the universal air pipe 35 is designed to be 12mm, the through hole 342 butted with the upper end of the air hole 35 is a small hole of 5mm, and obstruction caused by water drops and coal ash can be avoided while the flow can be controlled. The filter body sets up in the cavity of main casing body 34, and the filter body top extends to outside the main casing body 34, and the filter body includes first order filter body 37 and second level filter body 38, first order filter body 37 is cylindric, and its middle part and main casing body 34 top fixed connection, first order filter body 37 top extend to outside the main casing body 34 and have third mounting disc 371, offer the recess that can imbed the second sealing washer in third mounting disc 371, first order filter body 37 inner wall is provided with annular supporting bench 373 and annular groove 372, annular supporting bench 373 is used for supporting second level filter body 38 top, annular groove 372 sets up in annular supporting bench 373 top, and the embedded circlip 39 of annular groove 372, circlip 39 is with second level filter body 38 pressure equipment on annular supporting bench 373. The first stage filter body 37 is provided with
The air holes (evenly distributed) mainly play a role of cooling and filtering, and the second-stage filter body 38 is provided with
The air holes (evenly distributed) play a role in cooling and filtering, and the elastic retainer ring 39 is embedded into the air taking component main body through the holes, so that the air taking component main body can be detached and is convenient to clean the inside.
Sensor installation component includes second sealing washer 310 and second clamp 311, second sealing washer 310 inlays and establishes on third mounting disc 371 top, and third mounting disc 371 accessible second clamp 311 of first-stage filter 37 can be dismantled with the sensor and be connected, and second clamp 311 adopts the clamp of phi 50.5 size.
When the pipeline connecting seat assembly is used, the pipeline connecting seat assembly is welded on an extraction pipeline 1, and a first sealing ring is placed at the top end of the pipeline connecting seat assembly; then inserting the gas taking assembly into the pipeline connecting seat assembly, communicating the two gas pipes with the inner cavity of the extraction pipeline 1, and sealing and fixing the pipeline connecting seat assembly and the gas taking assembly through a first clamp to form the gas taking device 3 of the coal mine gas drainage sensor; and then, a second sealing ring is arranged at the top end of the gas taking device 3 of the coal mine gas drainage sensor, and the sensor 2 is hermetically arranged on the gas taking device through a second clamp, as shown in fig. 4.
Referring to fig. 1-4, the dynamic process of the present invention is divided into two parts: 1. conducting heat of the extraction pipeline; 2. the gas taking process and the heat conduction of the gas sample.
And (3) conducting heat of the extraction pipeline: considering the real-time ventilation condition of the ground to the roadway, a small amount of temperature difference exists between the temperature of the underground extraction pipeline of the coal mine gas drainage system and the ambient temperature (the default pipeline temperature is 5 ℃ higher than the ambient temperature). The heat of the extracted pipeline wall is upwards conducted to the second mounting disc 341 of the lower mounting disc of the device through the pipeline connecting seat body 32, and the temperature of the second mounting disc 341 is slightly reduced due to the increase of the conduction distance and the heat dissipation of the main shell 34; the heat of the second mounting plate 341 is conducted to the first stage filter body 37, the conduction distance is increased, the heat of the main shell 34 is dissipated, and the temperature of the first stage filter body 37 is lower than that of the second mounting plate 341; the temperature of the second-stage filter body 38 is lower than that of the second mounting plate 341 and is consistent with the ambient temperature, and the temperature of the main shell 34 is distributed from top to bottom.
And (3) conducting the gas taking process and the gas sample heat: the mixed gas flows rapidly to form a high-pressure area and a low-pressure area in front of and behind the differential pressure baffle plate 36; high pressure area gas enters the chamber upwards through the inlet hole of the left gas pipe 35 (or the right side); due to the resistance of the first-stage filter body 37, a large amount of gas and coal ash dust rapidly flow to the return air hole of the right air pipe 35 (or the left air pipe) from the space between the main shell 34 and the first-stage filter body 37 and return to the extraction pipeline 1, and condensed water drops on the inner wall surface of the cavity of the main shell 34 and the surface of the first-stage filter body 37 drop and flow to the bottom of the cavity and are brought back to the extraction pipeline 1; the wet surface of the first-stage filter body 37 absorbs part of coal ash dust, and water drops carry the coal ash to flow into the bottom and return to the extraction pipeline 1; only a small amount of gas enters the first-stage filter body 37 through the through holes on the first-stage filter body 37, and partial condensation and coal ash adsorption are carried out; a small amount of gas enters the inside of the second-stage filter body 38 through the through hole of the second-stage filter body 38, and the second-stage filter body 38 condenses and adsorbs coal ash in the process; after condensation and coal ash adsorption twice, the cooled clean gas sample reaches the probe part of the sensor 2 for measurement by the sensor. Condensed water drops in the two-stage filter body drop to the bottom of the cavity through the bottom drain hole and return to the extraction pipeline 1.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", "side", "end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "disposed," "provided," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Finally, it should be noted that: the above embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still modify or easily conceive of changes in the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. The utility model provides a colliery gas drainage sensor gets gas device which characterized in that: the device comprises a pipeline connecting seat assembly used for connecting an extraction pipeline, a gas taking assembly used for automatically extracting gas in the extraction pipeline and a sensor mounting assembly used for connecting a sensor;
the pipeline connecting seat assembly comprises a pipeline connecting seat body, a first sealing ring and a first clamp, the pipeline connecting seat body is fixed on the extraction pipeline, the first sealing ring is arranged at the top end of the pipeline connecting seat body, and the pipeline connecting seat body can be detachably connected with the gas taking assembly through the first clamp;
the gas taking assembly comprises a main shell, two differential pressure baffles, gas pipes and a filter body, wherein a cavity is formed in the main shell, the bottom end of the main shell can be detachably connected with a pipeline connecting seat body through a first clamp, the number of the gas pipes is two, the gas pipes are fixed at the bottom end of the main shell, the top ends of the gas pipes are communicated with the cavity in the main shell, the bottom ends of the gas pipes are oblique notches inclined to the horizontal plane, the two oblique notches are oppositely arranged, the bottom ends of the gas pipes can be communicated with an extraction pipeline through the pipeline connecting seat body, the differential pressure baffles are fixed at the bottom end of the main shell and arranged between the two gas pipes, the bottom ends of the differential pressure baffles are lower than the bottom ends;
the sensor installation component comprises a second sealing ring and a second hoop, the second sealing ring is arranged on the top end of the filter body, and the filter body can be detachably connected with the sensor through the second hoop.
2. The coal mine gas drainage sensor gas extraction device of claim 1, wherein: the top end of the pipeline connecting seat body is provided with a first mounting disc, and a groove capable of being embedded into a first sealing ring is formed in the first mounting disc.
3. The coal mine gas drainage sensor gas extraction device of claim 2, wherein: the main casing body bottom has the second mounting disc, sets up the recess that can imbed first sealing washer in the second mounting disc, can dismantle through first clamp and be connected between first mounting disc and the second mounting disc.
4. The coal mine gas drainage sensor gas extraction device of claim 1, wherein: the filter body includes first level filter body and second level filter body, first level filter body is fixed in the cavity of main casing body, and first level filter body top extends outside the main casing body, the second level filter body sets up in first filtration, and the diameter of the filtration pore on the first level filter body is greater than the diameter of the filtration pore on the second level filter body.
5. The coal mine gas drainage sensor gas extraction device of claim 4, wherein: the top end of the first-stage filter body is provided with a third mounting disc, a groove capable of being embedded into a second sealing ring is formed in the third mounting disc, and the third mounting disc is detachably connected with the sensor through a second clamp.
6. The coal mine gas drainage sensor gas extraction device of claim 4, wherein: the first order is filtered internal wall and is provided with annular brace table and annular groove, annular brace table is used for supporting second level and filters the body top, the annular groove sets up in annular brace table top, and the annular groove is embedded to have circlip, circlip is with second level filter body pressure equipment on annular brace table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020297424.XU CN212159236U (en) | 2020-03-11 | 2020-03-11 | Gas taking device of coal mine gas drainage sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020297424.XU CN212159236U (en) | 2020-03-11 | 2020-03-11 | Gas taking device of coal mine gas drainage sensor |
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| CN212159236U true CN212159236U (en) | 2020-12-15 |
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| CN202020297424.XU Active CN212159236U (en) | 2020-03-11 | 2020-03-11 | Gas taking device of coal mine gas drainage sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111337316A (en) * | 2020-03-11 | 2020-06-26 | 天地（常州）自动化股份有限公司 | Gas taking device of coal mine gas drainage sensor |
| CN113049541A (en) * | 2021-03-11 | 2021-06-29 | 中科睿感智能科技(北京)有限公司 | Suction type optical interference gas pipeline sensor |
-
2020
- 2020-03-11 CN CN202020297424.XU patent/CN212159236U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111337316A (en) * | 2020-03-11 | 2020-06-26 | 天地（常州）自动化股份有限公司 | Gas taking device of coal mine gas drainage sensor |
| CN111337316B (en) * | 2020-03-11 | 2024-09-06 | 天地（常州）自动化股份有限公司 | Gas taking device of coal mine gas pumping sensor |
| CN113049541A (en) * | 2021-03-11 | 2021-06-29 | 中科睿感智能科技(北京)有限公司 | Suction type optical interference gas pipeline sensor |
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