CN212567529U - Multi-point matrix flow measuring device applied to circular vertical flue - Google Patents
Multi-point matrix flow measuring device applied to circular vertical flue Download PDFInfo
- Publication number
- CN212567529U CN212567529U CN202021002410.7U CN202021002410U CN212567529U CN 212567529 U CN212567529 U CN 212567529U CN 202021002410 U CN202021002410 U CN 202021002410U CN 212567529 U CN212567529 U CN 212567529U
- Authority
- CN
- China
- Prior art keywords
- probe
- negative pressure
- positive pressure
- vertical flue
- circular vertical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000011159 matrix material Substances 0.000 title claims abstract description 16
- 239000000523 sample Substances 0.000 claims abstract description 51
- 238000005070 sampling Methods 0.000 claims abstract description 26
- 239000012530 fluid Substances 0.000 claims abstract description 4
- 238000010926 purge Methods 0.000 claims description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 238000007664 blowing Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 16
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 abstract description 4
- 239000002440 industrial waste Substances 0.000 abstract description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 3
- 239000003546 flue gas Substances 0.000 abstract description 3
- 230000001174 ascending effect Effects 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 1
- 239000003517 fume Substances 0.000 abstract 1
- 238000012935 Averaging Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Landscapes
- Measuring Volume Flow (AREA)
Abstract
The utility model discloses a be applied to multiple spot matrix flow measuring device of circular vertical flue, include the four sampling device of group that arrange along the circumference quadrature, every group sampling device includes and is just getting to press the probe and being located just getting to press the negative pressure probe of probe bottom, wherein just getting to press the probe to set up the probe by five vertical under shed and form, positive pressure probe absorbs and comes from vertical ascending fluid in the circular vertical flue, positive pressure probe gathers the malleation in first collection point with circular vertical flue cross-section, negative pressure probe gathers the negative pressure in second collection point with circular vertical flue cross-section, positive pressure probe and negative pressure probe's outer end is connected with mounting flange. The utility model discloses a flow measuring device is difficult for blockking up, measures that the accuracy is high, long service life, reliable and stable, can be in succession, accurate on-line measurement industrial waste gas pipeline in the flue gas velocity and the flow of discharging fume, have important meaning to the atmosphere environmental protection.
Description
Technical Field
The utility model relates to a flue gas flow measurement equipment technical field especially relates to a be applied to multipoint matrix flow measuring device of circular vertical flue.
Background
The general method for measuring the flow rate of the industrial waste gas adopts a traditional sampling point (point measurement) or a plurality of measuring points (line measurement), the flow rate of the waste gas can be accurately measured only under the condition of a uniform flow field or a relatively uniform flow field, and if the flow field is uneven or disordered, the average flow rate at the section can not be accurately measured by the point measurement and the line measurement. However, in the industrial waste gas discharge pipeline in the industries of electric power, petroleum, chemical industry and the like, due to practical conditions such as process and space limitation, the waste gas pipeline is difficult to reach the straight pipe section measurement condition of a uniform flow field or a relatively uniform flow field, so that the traditional point measurement and line measurement flow rate modes cannot represent the average speed of a certain section of the exhaust pipeline, the measurement data error is large, the test error is generally more than 10-20% according to the actual comparison on site, the requirement of an environmental protection department on-line monitoring cannot be met, and the method cannot be used as the basis for carrying out pollution discharge fee collection on a pollution discharge enterprise.
As a cross section flowmeter, the static pressure pipe is horizontally arranged, the total pressure averaging pipe is vertically arranged in the middle of the flange, the left side and the right side of the upper part of the total pressure averaging pipe are respectively connected with 4 total pressure pipes, the middle part of the right side of the total pressure averaging pipe is also connected with another total pressure pipe, and compared with a point measurement mode and a line measurement mode, the flowmeter improves the accuracy of measurement data. However, in the actual use process, the flowmeter is easy to block, large in maintenance workload, easy to damage and short in service life, and the problems of large error and low accuracy of the measurement result still exist due to the disordered arrangement mode of the total pressure pipe and the static pressure pipe.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the shortcoming that exists among the prior art, and the multipoint matrix flow measuring device who is applied to circular vertical flue who proposes.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a be applied to multiple spot matrix flow measuring device of circular vertical flue, includes four sampling device that arrange along the circumference quadrature, every group sampling device includes positive pressure probe and is located the negative pressure probe of positive pressure probe bottom, wherein positive pressure probe is set up the probe by five vertical under shed and is constituteed, positive pressure probe absorbs and comes from vertical ascending fluid in the circular vertical flue, positive pressure probe gathers the malleation in circular vertical flue cross-section in first gathering point, negative pressure probe is the flat mouthful setting, negative pressure probe gathers the negative pressure in circular vertical flue cross-section in the second gathering point, positive pressure probe and negative pressure probe's outer end is connected with mounting flange.
Preferably, a positive pressure taking cavity and a negative pressure taking cavity are arranged in the fixed flange, and the positive pressure taking probe and the negative pressure taking probe are respectively communicated with the positive pressure taking cavity and the negative pressure taking cavity.
Preferably, a sampling head is fixed on the fixed flange, a positive pressure taking channel and a negative pressure taking channel are respectively arranged in the sampling head, and the positive pressure taking channel and the negative pressure taking channel are respectively communicated with the positive pressure taking cavity and the negative pressure taking cavity.
Preferably, the positive pressure taking channel and the negative pressure taking channel of the sampling head are respectively connected with the differential pressure transmitter through a positive pressure eduction tube and a negative pressure eduction tube.
Preferably, the positive pressure eduction tube and the negative pressure eduction tube are respectively provided with a measuring electromagnetic valve, the positive pressure eduction tube and the negative pressure eduction tube are respectively connected with a purging pipeline in parallel, the purging pipeline is provided with a back flushing electromagnetic valve, and one end of the purging pipeline is connected with an air compressor.
Preferably, the positive pressure eduction tube and the negative pressure eduction tube are respectively made of stainless steel tubes.
The utility model provides a difficult jam, the measurement accuracy is high, long service life, reliable and stable circular pipeline total cross section flow measuring device, on same cross-section in circular pipeline, arrange four sampling device of group along the circumference quadrature, the measuring result is accurate, and set up and sweep the device, regularly to the malleation outlet pipe, negative pressure outlet pipe and each outlet pipe reverse sweep, possess and prevent stifled deashing function, difficult jam, the maintenance volume is little, reliable and stable, long service life's advantage, can be continuous, accurate on-line measurement arranges complicacy, the flue gas velocity of flow (flow) in the disorderly industrial waste gas pipeline in flow field, can satisfy environmental protection department and carry out the on-line monitoring accuracy to exhaust emission, the requirement of continuity and reliability, it is significant to atmospheric environmental protection.
Drawings
Fig. 1 is a front view of a multi-point matrix flow measuring device applied to a circular vertical flue according to the present invention;
fig. 2 is the utility model provides a be applied to multipoint matrix flow measuring device's of circular vertical flue top view.
In the figure: the pressure measuring device comprises a positive pressure measuring probe 1, a negative pressure measuring probe 2, a fixed flange 3, a positive pressure eduction tube 4, a seventh connecting tube 5, a third connecting tube 6, a first collecting point 7, a second collecting point 8, a first connecting tube 10, a fifth connecting tube 11, a second connecting tube 12, a sixth connecting tube 13, a fourth connecting tube 16, an eighth connecting tube 17 and a negative pressure eduction tube 41.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-2, a multi-point matrix flow measuring device applied to a circular vertical flue, includes four sets of sampling devices orthogonally arranged along a circumference, four large sampling devices which are arranged in a round vertical flue, front, back, left and right are arranged in the round vertical flue, included angles of the four large sampling devices are 90 degrees apart on the same plane, each group of sampling devices comprises a positive pressure taking probe 1 and a negative pressure taking probe 2 positioned at the bottom of the positive pressure taking probe 1, wherein the positive pressure measuring probe 1 consists of five probes which are vertically arranged downwards and open, the positive pressure measuring probe 1 absorbs the fluid which is vertically upwards from the circular vertical flue, the positive pressure probe 1 collects the positive pressure of the circular vertical flue section to a first collecting point 7, the negative pressure probe 2 is arranged in a flat port, the negative pressure probe 2 collects the negative pressure of the circular vertical flue section at a second collecting point 8, and the outer ends of the positive pressure probe 1 and the negative pressure probe 2 are connected with a fixed flange 3.
The pressure sampling device is characterized in that a positive pressure taking cavity and a negative pressure taking cavity are arranged in the fixed flange 3, the positive pressure taking probe 1 and the negative pressure taking probe 2 are respectively communicated with the positive pressure taking cavity and the negative pressure taking cavity, a sampling head is fixed on the fixed flange 3, a positive pressure taking channel and a negative pressure taking channel are respectively arranged in the sampling head, the positive pressure taking channel and the negative pressure taking channel are respectively communicated with the positive pressure taking cavity and the negative pressure taking cavity, the positive pressure taking channel and the negative pressure taking channel of the sampling head are respectively connected with a differential pressure transmitter through a positive pressure outlet pipe 4 and a negative pressure outlet pipe 41, measuring electromagnetic valves are respectively arranged on the positive pressure outlet pipe 4 and the negative pressure outlet pipe 41, purging pipelines are respectively connected in parallel on the positive pressure outlet pipe 4 and the negative pressure outlet pipe 41, a back-flushing electromagnetic valve is arranged on the purging pipelines, one end of the purging pipelines is connected with an air compressor, and the positive pressure outlet pipe 4.
In this embodiment, the multi-point matrix flow measuring device is suitable for a circular pipeline with an inner diameter phi of 3001mm to phi 8000mm, the number of sampling holes is determined according to the inner diameter of the circular pipeline, and the larger the inner diameter is, the more the number is set. The first collection points 7 of the other four groups of sampling devices are anodes, are communicated with each other at the periphery of the circular flue and are connected in a circular shape; the connecting pipes are a first connecting pipe 10, a second connecting pipe 12, a third connecting pipe 6 and a fourth connecting pipe 16 in sequence; the second collection point 8 of the four groups of sampling devices is a negative electrode, is communicated with the periphery of the circular flue and is also connected in a circular shape, and the connecting pipes of the four groups of sampling devices are a fifth connecting pipe 11, a sixth connecting pipe 13, a seventh connecting pipe 5 and an eighth connecting pipe 17 in sequence. The peripheral communicating rings of the anode and the cathode of the device are parallel up and down, the upper part is positive, the lower part is negative, and the communicating rings are in closed-loop sealing connection. In any convenient installation position of the peripheral connecting pipe, namely taking the positive and negative stages of total pressure, a positive pressure eduction pipe 4 and a negative pressure eduction pipe 41 are shown in the figure 1; the positive pressure eduction tube 4 is a total positive pressure tube, the negative pressure eduction tube 41 is a total negative pressure tube, and is connected to the positive and negative electrodes of the differential pressure transmitter, and the total difference obtained by the measuring point of the circular pipeline section is sent to the transmitter under pressure and then sent to an upper computer system for data processing through the transmitter.
In the embodiment, according to the hydrodynamics bernoulli equation, the flow value, the volume flow or the mass flow of the pollutants in the circular flue can be obtained under the calculation of parameters such as the temperature, the pressure, the geometric dimension of the pipeline, the atmospheric pressure and the compensation coefficient of the flue, so that the flow of the pollutants discharged from the flue can be accurately monitored, and real-time and accurate data monitoring is provided for boiler combustion control.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. A multi-point matrix flow measuring device applied to a circular vertical flue comprises four groups of sampling devices which are orthogonally arranged along the circumference, it is characterized in that each group of sampling devices comprises a positive pressure-taking probe (1) and a negative pressure-taking probe (2) positioned at the bottom of the positive pressure-taking probe (1), wherein the positive pressure measuring probe (1) consists of five probes which are vertically arranged downwards and open, the positive pressure measuring probe (1) absorbs the fluid which is vertically upwards from the circular vertical flue, the positive pressure probe (1) collects the positive pressure of the section of the circular vertical flue to a first collecting point (7), the negative pressure taking probe (2) is arranged in a flat opening, the negative pressure taking probe (2) collects the negative pressure of the section of the circular vertical flue to a second collecting point (8), the outer ends of the positive pressure taking probe (1) and the negative pressure taking probe (2) are connected with a fixed flange (3).
2. The multipoint matrix flow measuring device applied to the circular vertical flue is characterized in that a positive pressure taking cavity and a negative pressure taking cavity are arranged in the fixing flange (3), and the positive pressure taking probe (1) and the negative pressure taking probe (2) are respectively communicated with the positive pressure taking cavity and the negative pressure taking cavity.
3. The multipoint matrix flow measuring device applied to the circular vertical flue according to claim 2, wherein a sampling head is fixed on the fixing flange (3), a positive pressure taking channel and a negative pressure taking channel are respectively arranged in the sampling head, and the positive pressure taking channel and the negative pressure taking channel are respectively communicated with the positive pressure taking cavity and the negative pressure taking cavity.
4. The multipoint matrix flow measuring device applied to the circular vertical flue according to claim 3, wherein the positive pressure taking channel and the negative pressure taking channel of the sampling head are respectively connected with a differential pressure transmitter through a positive pressure outlet pipe (4) and a negative pressure outlet pipe (41).
5. The multipoint matrix flow measuring device applied to the circular vertical flue according to claim 4, wherein the positive pressure outlet pipe (4) and the negative pressure outlet pipe (41) are respectively provided with a measuring electromagnetic valve, the positive pressure outlet pipe (4) and the negative pressure outlet pipe (41) are respectively connected with a purging pipeline in parallel, the purging pipeline is provided with a back-blowing electromagnetic valve, and one end of the purging pipeline is connected with an air compressor.
6. The multipoint matrix flow measuring device applied to the circular vertical flue according to claim 4, wherein the positive pressure outlet pipe (4) and the negative pressure outlet pipe (41) are respectively made of stainless steel pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021002410.7U CN212567529U (en) | 2020-06-04 | 2020-06-04 | Multi-point matrix flow measuring device applied to circular vertical flue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021002410.7U CN212567529U (en) | 2020-06-04 | 2020-06-04 | Multi-point matrix flow measuring device applied to circular vertical flue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212567529U true CN212567529U (en) | 2021-02-19 |
Family
ID=74637902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021002410.7U Active CN212567529U (en) | 2020-06-04 | 2020-06-04 | Multi-point matrix flow measuring device applied to circular vertical flue |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212567529U (en) |
-
2020
- 2020-06-04 CN CN202021002410.7U patent/CN212567529U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103364580A (en) | System and method for multi-point grid on-line flow velocity measurement | |
| CN204882168U (en) | Large -sized boiler flue net sampling device | |
| CN105675067A (en) | Circular pipeline full-area flow meter | |
| CN212567529U (en) | Multi-point matrix flow measuring device applied to circular vertical flue | |
| CN207964391U (en) | A kind of flue gas sampling device | |
| CN210071442U (en) | Flue gas measuring and sampling mechanism | |
| CN205506130U (en) | Circular pipeline total cross -section flowmeter | |
| CN203479824U (en) | Pitot tube apparatus for multiple-detection-point flue gas flow velocity measuring | |
| CN205561940U (en) | Circular pipeline total cross -section flow measuring device | |
| CN113945432A (en) | Sampling device and sampling method of flue gas monitoring system | |
| CN205374505U (en) | Can tear pitot tube device that trades fast open | |
| CN211085374U (en) | Differential pressure type flowmeter with anti-blocking device | |
| CN216116173U (en) | Measuring device for measuring flow of corrosive medium with large pipe diameter | |
| CN205506128U (en) | Wear -resisting corrosion -resistant amount of wind of multiple spot cross -section equipartition formula and flue gas flux measuring device | |
| CN212059582U (en) | Coal fired power plant boiler operation oxygen volume on-line measuring device | |
| CN205593702U (en) | Sample of power plant boiler pressure is enlargied, stable composite set that measures | |
| CN110987544B (en) | Single-pipe type multipoint heat-engine plant rectangular flue gas sampling device and sampling method | |
| CN103353538A (en) | Pitot tube apparatus for multiple-detection-point flue gas flow velocity measuring | |
| CN210834375U (en) | Sulfuric acid mist monitoring and sampling device | |
| CN209486128U (en) | A kind of novel Pitot tube | |
| CN105043827A (en) | Power station boiler flue gas sampling device | |
| CN113432936A (en) | Continuous sampling device and sampling method for flue gas and dust | |
| CN111855892A (en) | Manual detection method and device for disorganized fluoride emission of skylight in electrolytic workshop | |
| CN208091502U (en) | Single-point type ceramics full protection flue gas flow meter | |
| CN203758994U (en) | Turbulence-free multicomponent gas monitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240630 Address after: No. 209, Building 1, Beichen Building, Beijing-Tianjin Highway, Beicang Town, Beichen District, Tianjin 300000 Patentee after: Zhang Dongxia Country or region after: China Address before: Room 402c, School of software, Nanjing University, No.2, Xinke 2nd Road, Jiangbei new district, Nanjing City, Jiangsu Province, 210043 Patentee before: NANJING TONGLUO AUTOMATION TECHNOLOGY Co.,Ltd. Country or region before: China |
|
| TR01 | Transfer of patent right |