CN204479110U - A kind of modularization apparatus for measuring air quantity - Google Patents
A kind of modularization apparatus for measuring air quantity Download PDFInfo
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- CN204479110U CN204479110U CN201520165757.6U CN201520165757U CN204479110U CN 204479110 U CN204479110 U CN 204479110U CN 201520165757 U CN201520165757 U CN 201520165757U CN 204479110 U CN204479110 U CN 204479110U
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- probe module
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Abstract
The utility model provides a kind of modularization apparatus for measuring air quantity, comprise pressure probe module and communicating pipe, described pressure probe module is made up of total pressure measurement parts and static pressure measurement parts, described in several, pressure probe module is arranged in air channel, be connected by communicating pipe between pressure probe module, described communicating pipe is T-shaped, first branch road is connected with described pressure probe module by the sealing adaptor on described pressure probe module, second branch road is connected with differential pressure transmitter by valve, and the 3rd branch road is connected with compressed air hose by blowback joint.Adopt modular design, the requirement of air measuring in large section duct can be met, and reduce cost; The utility model is convenient to install, operation and maintenance, stability and reliability high, there are wide market outlook.
Description
Technical field
The utility model relates to a kind of modularization apparatus for measuring air quantity, belongs to thermal measurement and instrument technical field.
Background technology
China's thermal power output accounts for gross generation about 70%, and coal accounts for 90% of fired power generating unit fuel, and along with the quick growth of national economy, generating capacity fast development, the atmosphere polluting problem brought by fire coal is day by day serious.If the atmosphere pollution of power plant emission can not get effective control, will directly have influence on the improvement of China's atmosphere quality.
For Control pollution aggravation, promote the technical progress of Thermal Power Generation Industry and the sustainable development of power industry, national environmental protection department takes a series of strict environmental protection policy, under this requires, major part Thermal Power Plant Construction flue gas desulfur device, effectively reduce pollutant discharge amount, but also also exist simultaneously and effectively monitor difficulty, ensure the problems such as desulfurizer high investment rate is difficult.
After flue gas desulfur device is installed, generally there are two paths between the flue gas after electric precipitation to chimney: through desulfurizer with through bypass door.Bypass door is closed under normal circumstances, only open when desulfurizer breaks down maintenance temporarily, but because putting into operation of desulfurizer can improve cost of electricity-generating by a relatively large margin, under huge cost pressure, may occur the phenomenon that unlatching bypass door makes part or all of flue gas be bypassed affecting the effect of flue gas desulfurization.
The simple aperture of monitoring bypass door that relies on can not stop gas bypass phenomenon, completely because bypass door open degree feedback and the actual aperture of bypass door may exist deviation.By installing flue gas flow measurement mechanism after bypass door, detecting the flue gas flow value after bypass door in real time, the virtual condition of bypass door can be judged.Therefore installing flue gas flow measurement mechanism after bypass door is a kind of effective means ensureing flue gas desulfurization effect, air conservation deterioration.
The monitoring of current flue gas flow mainly contains three kinds of methods: differential pressure method, supercritical ultrasonics technology and hot sensing method.
Differential pressure method utilizes measuring sonde to measure stagnation pressure and the static pressure of flue gas, and difference and the dynamic pressure of stagnation pressure and static pressure become certain proportionate relationship with tested flue gas flow rate, thus can obtain flue gas flow.
Supercritical ultrasonics technology is by ultrasound wave along flue gas flow direction with when passing through two points of known distance against flue gas flow direction, and its transmission time is different, and METHOD FOR CONTINUOUS DETERMINATION transmission time difference can realize the continuous monitoring of flue gas flow rate and flow.
Hot sensing method be flue gas by thermal sensor time, the resistance of the heat taken away and flue gas flow rate and thermal sensor is changing into ratio, by measure thermal sensor resistance change can try to achieve flue gas flow rate and flow.
Wherein differential pressure method is the flow-measuring method that application is maximum, applicability is the strongest, reliability is the highest at present, is one of flue gas flow scaling method of regulation in State Environmental Protection Administration's " coal steam-electric plant smoke discharges continuous Specifications of Monitoring Technology ".
In practical application, because flue cross section is large, Flow Field Distribution is complicated, adopt to exist during integrated differential pressure method measurement mechanism manufacture complicated, sealing property detection difficulty is large, transport stores the deficiencies such as installation and maintenance workload is large.
Utility model content
The utility model, in order to solve the above-mentioned defect and deficiency that exist in prior art, provides a kind of modularization apparatus for measuring air quantity, is applicable to the air measuring in large section duct, and installation and removal are convenient, is easy to safeguard.
For solving the problems of the technologies described above, the utility model provides a kind of modularization apparatus for measuring air quantity, comprise pressure probe module and communicating pipe, described pressure probe module is made up of total pressure measurement parts and static pressure measurement parts, described in several, pressure probe module is arranged in air channel, be connected by communicating pipe between pressure probe module, described communicating pipe is T-shaped, first branch road is connected with described pressure probe module by the sealing adaptor on described pressure probe module, second branch road is connected with differential pressure transmitter by valve, 3rd branch road is connected with compressed air hose by blowback joint.
Preferably, described total pressure measurement parts, comprise some stagnation pressure pressure pipes, stagnation pressure connecting pipe and stagnation pressure pressure guiding pipe; Described stagnation pressure pressure pipe and stagnation pressure pressure guiding pipe are vertical tube, arranged in parallel between several stagnation pressure pressure pipes described, stagnation pressure connecting pipe is inclined tube, stagnation pressure pressure pipe is communicated with by stagnation pressure connecting pipe, stagnation pressure connecting pipe is connected with stagnation pressure pressure guiding pipe and communicates, and the two ends up and down of stagnation pressure pressure pipe are respectively equipped with stagnation pressure pressure tappings; The lower end of described stagnation pressure pressure guiding pipe is provided with stagnation pressure pressure tappings, and described stagnation pressure pressure tappings adopts oblique profile mouth.
Preferably, described static pressure measurement parts are located at the back side of described total pressure measurement parts, comprise several static pressure pressure pipes, static pressure connecting pipe and static pressure pressure guiding pipe, static pressure pressure pipe is vertical tube, and arranged in parallel between several static pressure pressure pipes described, static pressure connecting pipe is inclined tube, static pressure pressure pipe is communicated by the connection of static pressure connecting pipe, each static pressure connecting pipe is communicated on static pressure pressure guiding pipe, and the lower end of static pressure pressure pipe is provided with static pressure tapping, and described static pressure tapping adopts flat mouth.
Preferably, described stagnation pressure pressure guiding pipe comprises total pressure guiding pipe, pressure guiding pipe branch and pressure guiding pipe connecting pipe, pressure guiding pipe branches into straight tube, arranged in parallel, be disposed between a stagnation pressure pressure pipe, stagnation pressure pressure pipe is communicated in adjacent pressure guiding pipe branch by stagnation pressure connecting pipe, and pressure guiding pipe branch is communicated on total pressure guiding pipe by pressure guiding pipe connecting pipe.
Preferably, described sealing adaptor is provided with sealing gasket.
Preferably, described sealing gasket is ceramic seal pad.
Preferably, external diameter is of a size of 8-12mm described communicating pipe.
The Advantageous Effects that the utility model reaches:
The utility model adopts modular design, can meet the requirement of air measuring in large section duct, and reduce cost; The utility model is convenient to install, operation and maintenance, stability and reliability high, there are wide market outlook.
Accompanying drawing explanation
Fig. 1 the utility model structural representation;
Fig. 2 communicating tube structure schematic diagram;
Fig. 3 seal joint structure schematic diagram;
Fig. 4 pressure probe module structural representation.
Embodiment
In order to the technique effect that auditor can better understand technical characteristic of the present utility model, technology contents and reach, now accompanying drawing of the present utility model is described in detail in conjunction with the embodiments.But shown accompanying drawing, just in order to better illustrate the technical solution of the utility model; be not actual proportions of the present utility model and best configuration; so, ask auditor not with regard to ratio and the configuration of accompanying drawing, limit claims of the present utility model.
Below in conjunction with drawings and Examples, the utility model patent is further illustrated.
As Figure 1-3, the utility model provides a kind of modularization apparatus for measuring air quantity, comprise pressure probe module 2 and communicating pipe 3, described pressure probe module 2 is made up of total pressure measurement parts 4 and static pressure measurement parts 5, pressure probe module 2 described in several is arranged in air channel 3, is connected between pressure probe module 2 by communicating pipe 1; Described communicating pipe 1 is T-shaped, first branch road 11 is connected with described pressure probe module 2 by the sealing adaptor 6 on described pressure probe module 2, second branch road 12 is connected with differential pressure transmitter by valve 8, and the 3rd branch road 13 is connected with compressed air hose by blowback joint 9.
The utility model adopts modular design, can meet the requirement of air measuring in large section duct, and reduce cost.During installation, pressure probe module 2 is fixed in air channel 3, the stagnation pressure efferent duct of pressure probe module 2 and static pressure efferent duct output terminal by positive/negative-pressure respectively by sealing adaptor 6 be tightly connected communicating pipe 1, while guarantee good sealing effect, be convenient to again install, operation and maintenance, stability and reliability high.In order to better ensure the sealing connected, described sealing adaptor 6 is provided with sealing gasket 7, and preferably, sealing gasket 7 is ceramic seal pad.Communicating pipe 1, external diameter was of a size of 8-12mm.3rd branch road 13 of communicating pipe 1 is connected with compressed air hose by blowback joint 9, maintains easily the blowback blockage removing in process, avoids line clogging.
As specific embodiment of the utility model, as shown in Figure 4, described total pressure measurement parts 4, comprise 4 stagnation pressure pressure pipes, 46,6 stagnation pressure connecting pipes 48 and they are connected conducting.Stagnation pressure pressure guiding pipe 43 comprises total pressure guiding pipe 41, pressure guiding pipe branch 44 and pressure guiding pipe connecting pipe 42, pressure guiding pipe branch 44 is straight tube, arranged in parallel, be arranged at equal intervals between a stagnation pressure pressure pipe 46, stagnation pressure pressure pipe 46 is communicated in adjacent pressure guiding pipe branch 44 by stagnation pressure connecting pipe 48.Pressure guiding pipe connecting pipe 42 is inclined tube, pressure guiding pipe branch 44 is communicated on total pressure guiding pipe 41.Described stagnation pressure pressure pipe 46 and stagnation pressure pressure guiding pipe 43 are vertical tube, arranged in parallel between several stagnation pressure pressure pipes 46 described, stagnation pressure connecting pipe 48 is inclined tube, stagnation pressure pressure pipe 46 is communicated with by stagnation pressure connecting pipe 48, stagnation pressure connecting pipe 48 is connected with stagnation pressure pressure guiding pipe 43 and communicates, and the two ends up and down of stagnation pressure pressure pipe 46 are respectively equipped with stagnation pressure pressure tappings 45; The lower end of described total pressure guiding pipe 41 is provided with stagnation pressure pressure tappings 45, and described stagnation pressure pressure tappings 45 adopts oblique profile mouth.
Described static pressure measurement parts 5 are located at the back side of described total pressure measurement parts 4, comprise several static pressure pressure pipes 53, static pressure connecting pipe 52 and static pressure pressure guiding pipe 51, static pressure pressure pipe 53 is vertical tube, arranged in parallel between several static pressure pressure pipes 53 described, static pressure connecting pipe 52 is inclined tube, static pressure pressure pipe 53 is communicated by static pressure connecting pipe 52 connection, each static pressure connecting pipe 52 is communicated on static pressure pressure guiding pipe 51, the lower end of static pressure pressure pipe 53 is provided with static pressure tapping 54, and described static pressure tapping 54 adopts flat mouth.
Below disclose the utility model with preferably embodiment, so itself and be not used to limit the utility model, allly take equivalent replacement or technical scheme that the scheme of equivalent transformation obtains, all drop in protection domain of the present utility model.
Claims (7)
1. a modularization apparatus for measuring air quantity, it is characterized in that: comprise pressure probe module and communicating pipe, described pressure probe module is made up of total pressure measurement parts and static pressure measurement parts, described in several, pressure probe module is arranged in air channel, be connected by communicating pipe between pressure probe module, described communicating pipe is T-shaped, first branch road is connected with described pressure probe module by the sealing adaptor on described pressure probe module, second branch road is connected with differential pressure transmitter by valve, and the 3rd branch road is connected with compressed air hose by blowback joint.
2. modularization apparatus for measuring air quantity according to claim 1, is characterized in that: described total pressure measurement parts, comprises some stagnation pressure pressure pipes, stagnation pressure connecting pipe and stagnation pressure pressure guiding pipe; Described stagnation pressure pressure pipe and stagnation pressure pressure guiding pipe are vertical tube, arranged in parallel between several stagnation pressure pressure pipes described, stagnation pressure connecting pipe is inclined tube, stagnation pressure pressure pipe is communicated with by stagnation pressure connecting pipe, stagnation pressure connecting pipe is connected with stagnation pressure pressure guiding pipe and communicates, and the two ends up and down of stagnation pressure pressure pipe are respectively equipped with stagnation pressure pressure tappings; The lower end of described stagnation pressure pressure guiding pipe is provided with stagnation pressure pressure tappings, and described stagnation pressure pressure tappings adopts oblique profile mouth.
3. modularization apparatus for measuring air quantity according to claim 1, it is characterized in that: described static pressure measurement parts are located at the back side of described total pressure measurement parts, comprise several static pressure pressure pipes, static pressure connecting pipe and static pressure pressure guiding pipe, static pressure pressure pipe is vertical tube, arranged in parallel between several static pressure pressure pipes described, static pressure connecting pipe is inclined tube, static pressure pressure pipe is communicated by the connection of static pressure connecting pipe, each static pressure connecting pipe is communicated on static pressure pressure guiding pipe, the lower end of static pressure pressure pipe is provided with static pressure tapping, and described static pressure tapping adopts flat mouth.
4. modularization apparatus for measuring air quantity according to claim 2, it is characterized in that: described stagnation pressure pressure guiding pipe comprises total pressure guiding pipe, pressure guiding pipe branch and pressure guiding pipe connecting pipe, pressure guiding pipe branches into straight tube, arranged in parallel, be disposed between a stagnation pressure pressure pipe, stagnation pressure pressure pipe is communicated in adjacent pressure guiding pipe branch by stagnation pressure connecting pipe, and pressure guiding pipe branch is communicated on total pressure guiding pipe by pressure guiding pipe connecting pipe.
5. modularization apparatus for measuring air quantity according to claim 1, is characterized in that: described sealing adaptor is provided with sealing gasket.
6. modularization apparatus for measuring air quantity according to claim 5, is characterized in that: described sealing gasket is ceramic seal pad.
7. modularization apparatus for measuring air quantity according to claim 1, is characterized in that: described communicating pipe external diameter be of a size of 8-12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520165757.6U CN204479110U (en) | 2015-03-23 | 2015-03-23 | A kind of modularization apparatus for measuring air quantity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520165757.6U CN204479110U (en) | 2015-03-23 | 2015-03-23 | A kind of modularization apparatus for measuring air quantity |
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| Publication Number | Publication Date |
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| CN204479110U true CN204479110U (en) | 2015-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520165757.6U Expired - Fee Related CN204479110U (en) | 2015-03-23 | 2015-03-23 | A kind of modularization apparatus for measuring air quantity |
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| CN (1) | CN204479110U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459097A (en) * | 2018-09-12 | 2019-03-12 | 温晓明 | The matrix distributed stream measuring device that a kind of On Line Foul Removing Technology and cold and hot compare |
-
2015
- 2015-03-23 CN CN201520165757.6U patent/CN204479110U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459097A (en) * | 2018-09-12 | 2019-03-12 | 温晓明 | The matrix distributed stream measuring device that a kind of On Line Foul Removing Technology and cold and hot compare |
| CN109459097B (en) * | 2018-09-12 | 2023-12-19 | 温晓明 | Matrix distributed flow measuring device for online descaling and cold-hot state comparison |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 Termination date: 20190323 |
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| CF01 | Termination of patent right due to non-payment of annual fee |