CN219715239U - Methane and oxygen content measuring device in pipeline - Google Patents
Methane and oxygen content measuring device in pipeline Download PDFInfo
- Publication number
- CN219715239U CN219715239U CN202320812745.2U CN202320812745U CN219715239U CN 219715239 U CN219715239 U CN 219715239U CN 202320812745 U CN202320812745 U CN 202320812745U CN 219715239 U CN219715239 U CN 219715239U
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- pipeline
- methane
- oxygen
- analyzer
- sampling
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 148
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 74
- 239000001301 oxygen Substances 0.000 title claims abstract description 74
- 239000007789 gas Substances 0.000 claims abstract description 52
- 238000005070 sampling Methods 0.000 claims description 41
- 238000005259 measurement Methods 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 239000003345 natural gas Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000523 sample Substances 0.000 description 13
- 238000007084 catalytic combustion reaction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to a device for measuring the content of methane and oxygen in a pipeline, and belongs to the technical field of testing the content of methane and oxygen in natural gas. The device for measuring the content of methane and oxygen in the pipeline comprises a base, wherein a methane standard gas cylinder and an oxygen standard gas cylinder are arranged on the base, a laser analyzer for measuring the content of methane and oxygen in the pipeline is arranged above the base vertically, and the methane standard gas cylinder and the oxygen standard gas cylinder are connected with the laser analyzer through pipelines. The beneficial effects are that: the method can continuously and accurately measure the content of methane and oxygen in the natural gas pipeline, and is safe, reliable, low in cost and long in service life.
Description
Technical Field
The utility model belongs to the technical field of testing of methane and oxygen content in natural gas, and particularly relates to a device for measuring methane and oxygen content in a pipeline.
Background
The hand-held combustible gas alarm for measuring the methane and oxygen content in the pipeline by the catalytic combustion method currently used faces the safety problem: the interface of the combustible gas alarm instrument and the pressure taking port is not connected in a sealing way, so that the risk of gathering safety of the combustible gas in a factory building exists; the excess pressure of the pipeline is too high, which creates an impact hazard. Low measurement accuracy problem: continuous measurement cannot be realized, and the influence of temperature pressure and environmental conditions is great; the equipment response is slow, and measurement accuracy is low. Poor reliability of the device: the catalytic combustion method has the advantages of easy carbon deposition of the probe, large pollution and short service life of the equipment.
Disclosure of Invention
The utility model aims to solve the technical problems and provides the device for measuring the methane and oxygen content in the pipeline, which can continuously and accurately measure the methane and oxygen content in the natural gas pipeline, is safe and reliable, has low cost and long service life.
The technical scheme for solving the technical problems is as follows: the device for measuring the methane and oxygen content in the pipeline comprises: the device comprises a base, a methane standard gas cylinder and an oxygen standard gas cylinder are arranged on the base, a laser analyzer for measuring the content of methane and oxygen in a pipeline is arranged above the base, and the methane standard gas cylinder and the oxygen standard gas cylinder are connected with the laser analyzer through pipelines.
The beneficial effects are that: the method can continuously and accurately measure the content of methane and oxygen in the natural gas pipeline, and is safe, reliable, low in cost and long in service life.
Preferably, the laser analyzer includes input pipeline, output pipeline, methane analyzer and oxygen analyzer, the sampling point of one end connecting tube of input pipeline, the other end is connected respectively the one end of output pipeline and the one end of sampling pipeline, be equipped with the relief valve on the output pipeline, the return sample point of the other end connecting tube of output pipeline, set gradually sample valve and relief valve on the input pipeline, the other end of sampling pipeline passes through the one end and the one end of oxygen sampling branch road of sample gas switching valve connection, the other end of methane sampling branch road is connected the methane standard gas bottle, the other end of oxygen sampling branch road is connected the oxygen standard gas bottle, be equipped with methane measurement/calibration switching valve on the methane sampling branch road, methane measurement/calibration switching valve passes through first pipeline connection the entry of methane analyzer, be equipped with oxygen measurement/calibration switching valve on the oxygen sampling branch road, oxygen measurement/calibration switching valve passes through the third pipeline connection the entry of oxygen analyzer, the oxygen analyzer passes through the second pipeline and is equipped with the fourth pipeline and the equal check valve on the fourth pipeline.
Preferably, the connecting piece comprises a side wall and a bottom wall, wherein an internal thread is arranged on the side wall, an external thread matched with the internal thread is arranged at one end of the shell connected with the connecting piece, and the bottom wall is connected with the flexible cylinder.
Preferably, a filter is arranged on the input pipeline between the sampling valve and the pressure reducing valve.
Preferably, the first pipeline is provided with a methane sample injection flowmeter, and the third pipeline is provided with an oxygen sample injection flowmeter.
Preferably, a moving wheel is arranged at the bottom of the base.
Preferably, the methane standard gas cylinder and the oxygen standard gas cylinder are both arranged on the base through a gas cylinder baffle.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a front view of FIG. 1;
fig. 3 is a schematic structural diagram of a laser analyzer.
In the drawings, the list of components represented by the various numbers is as follows:
1. a base; 2. a methane standard gas cylinder; 3. an oxygen standard gas cylinder; 4. a laser analyzer; 41. an input pipe; 42. a sampling valve; 43. a filter; 44. a pressure reducing valve; 45. an output pipe; 46. a safety valve; 47. a dryer; 48. a sample gas switching valve; 49. a methane sample injection flowmeter; 410. methane measurement/calibration switching valve; 411. a methane analyzer; 412. an oxygen analyzer; 413. a one-way valve; 414. an oxygen sample injection flowmeter; 415. an oxygen measurement/calibration switching valve; 416. a methane sampling branch; 417. an oxygen sampling branch; 5. a gas cylinder baffle; 6. sampling points; 7. and (5) sample return points.
Detailed Description
The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.
Example 1
As shown in fig. 1-3, the present embodiment provides a device for measuring methane and oxygen content in a pipeline, comprising: the base 1, the bottom of base 1 is equipped with removes the wheel, be equipped with methane standard gas cylinder 2 and oxygen standard gas cylinder 3 on the base 1, specifically set up through gas cylinder baffle 5 on the base 1, gas cylinder baffle 5 is 3/4 arc, the vertical top of base 1 is equipped with and is used for measuring the laser analyzer 4 of methane and oxygen content in the pipeline, methane standard gas cylinder 2 with oxygen standard gas cylinder 3 all passes through the pipe connection laser analyzer 4.
Preferably, the laser analyzer 4 includes an input pipeline 41, an output pipeline 45, a methane analyzer 411 and an oxygen analyzer 412, the sampling point 6 of the pipeline is connected to one end of the input pipeline 41, the other end is connected to one end of the output pipeline 45 and one end of the sampling pipeline respectively, a safety valve 46 is disposed on the output pipeline 45, the sampling point 7 of the pipeline is connected to the other end of the output pipeline 45, a sampling valve 42 and a pressure reducing valve 44 are sequentially disposed on the input pipeline 41, a dryer 47 is disposed on the sampling pipeline 416, the other end of the sampling pipeline is connected to one end of the methane sampling branch 416 and one end of the oxygen sampling branch 417 through a sample gas switching valve 48, the other end of the methane sampling branch 416 is connected to the methane standard gas bottle 2, the other end of the oxygen sampling branch 417 is connected to the oxygen standard gas bottle 3, a methane measuring/calibrating switching valve 410 is disposed on the methane sampling branch 416, the methane measuring/calibrating switching valve 410 is connected to an inlet of the methane analyzer 411 through a first pipeline, an outlet of the methane analyzer 411 is connected to the output pipeline 45 through a second pipeline, the oxygen analyzer is disposed on the oxygen sampling branch 415 is connected to the oxygen analyzer through a second pipeline 415, and the oxygen analyzer is connected to the oxygen analyzer through the oxygen measuring valve 417.
Preferably, a filter 43 is provided on the input pipe 41 between the sampling valve 42 and the pressure reducing valve 44, and the filter 43 may filter some impurities.
Preferably, the first pipeline is provided with a methane sample injection flowmeter 49, and the third pipeline is provided with an oxygen sample injection flowmeter 414.
When the gas sampling device is used, firstly, the methane standard gas bottle 2 and the oxygen standard gas bottle 3 are introduced into the methane analyzer 411 and the oxygen analyzer 412 to complete the standard gas test, the tested standard gas is directly discharged, then the gas is sampled through the sampling point 6 on the pipeline to be tested, the sampled gas is filtered through the filter 43, the pressure of the sampled gas is reduced by the pressure reducing valve and then enters the sampling pipeline 416, then the sampled gas enters the methane analyzer 411 and the oxygen analyzer 412 through the methane measuring/calibrating switching valve 410 and the oxygen measuring/calibrating switching valve 415 to complete the detection, and then the sampled gas enters the pipeline to be tested again through the output pipeline 45 after the detection, if the pressure of the sampled gas reaches the set value of the safety valve 46 after the pressure is reduced by the pressure reducing valve, the safety valve 46 is opened to directly discharge the gas from the output pipeline 45 into the pipeline to be tested.
In the description of the present utility model, it should be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "peripheral side", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the system or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.
Claims (6)
1. A device for measuring methane and oxygen content in a pipeline, comprising:
the device comprises a base (1), wherein a methane standard gas cylinder (2) and an oxygen standard gas cylinder (3) are arranged on the base (1), a laser analyzer (4) for measuring the content of methane and oxygen in a pipeline is arranged above the base (1), and the methane standard gas cylinder (2) and the oxygen standard gas cylinder (3) are connected with the laser analyzer (4) through pipelines.
2. The device for measuring the content of methane and oxygen in a pipeline according to claim 1, wherein the laser analyzer (4) comprises an input pipeline (41), an output pipeline (45), a methane analyzer (411) and an oxygen analyzer (412), one end of the input pipeline (41) is connected with a sampling point (6) of the pipeline, the other end of the input pipeline is respectively connected with one end of the output pipeline (45) and one end of the sampling pipeline, a safety valve (46) is arranged on the output pipeline (45), the other end of the output pipeline (45) is connected with a sampling point (7) of the pipeline, the input pipeline (41) is sequentially provided with a sampling valve (42) and a pressure reducing valve (44), the other end of the sampling pipeline is connected with one end of a methane sampling branch (416) and one end of an oxygen sampling branch (417) through a sample gas switching valve (48), the other end of the methane sampling branch (416) is connected with the methane standard gas bottle (2), the other end of the oxygen sampling branch (417) is connected with the oxygen standard gas bottle (3), the methane sampling branch (416) is provided with a methane measuring/calibrating valve (410), the methane analyzer (411) is connected with the first analyzer (45) through the first pipeline (45) and the second analyzer (411), the oxygen sampling branch (417) is provided with an oxygen measurement/calibration switching valve (415), the oxygen measurement/calibration switching valve (415) is connected with an inlet of the oxygen analyzer (412) through a third pipeline, an outlet of the oxygen analyzer (412) is connected with the output pipeline (45) through a fourth pipeline, and the second pipeline and the fourth pipeline are both provided with one-way valves (413).
3. The device for measuring the methane and oxygen content in a pipeline according to claim 2, characterized in that a filter (43) is arranged on the input pipeline (41) between the sampling valve (42) and the pressure reducing valve (44).
4. The device for measuring the content of methane and oxygen in a pipeline according to claim 2, wherein the first pipeline is provided with a methane sample injection flowmeter (49), and the third pipeline is provided with an oxygen sample injection flowmeter (414).
5. The device for measuring the methane and oxygen content in a pipeline according to any one of claims 1 to 4, characterized in that the bottom of the base (1) is provided with a moving wheel.
6. The device for measuring the methane and oxygen content in a pipeline according to any one of claims 1 to 4, wherein the methane standard gas cylinder (2) and the oxygen standard gas cylinder (3) are arranged on the base (1) through a gas cylinder baffle (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320812745.2U CN219715239U (en) | 2023-04-13 | 2023-04-13 | Methane and oxygen content measuring device in pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320812745.2U CN219715239U (en) | 2023-04-13 | 2023-04-13 | Methane and oxygen content measuring device in pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219715239U true CN219715239U (en) | 2023-09-19 |
Family
ID=88005455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320812745.2U Active CN219715239U (en) | 2023-04-13 | 2023-04-13 | Methane and oxygen content measuring device in pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219715239U (en) |
-
2023
- 2023-04-13 CN CN202320812745.2U patent/CN219715239U/en active Active
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