CN204594509U - Differential pressure type apparatus for measuring air quantity - Google Patents
Differential pressure type apparatus for measuring air quantity Download PDFInfo
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- CN204594509U CN204594509U CN201520159548.0U CN201520159548U CN204594509U CN 204594509 U CN204594509 U CN 204594509U CN 201520159548 U CN201520159548 U CN 201520159548U CN 204594509 U CN204594509 U CN 204594509U
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Abstract
The utility model provides a kind of differential pressure type apparatus for measuring air quantity, comprise the impulse assembly that many groups of being arranged on airduct pipeline are made up of the dynamic pressure tube arranged back-to-back and static tube, groove shape is arranged in one end that dynamic pressure tube is positioned at airduct pipeline, and the end that dynamic pressure tube is groove shape is arranged windward, flat mouth shape is arranged in one end that static tube is positioned at airduct pipeline, dynamic pressure tube in each impulse assembly and static tube respectively by pressure guiding pipe be connected in parallel in together with, and be connected to two connector places of differential pressure transmitter, airduct pipeline is positioned at the upstream that impulse assembly arranges position and is connected with a reverse-blow pipe, the other end of reverse-blow pipe is connected on the pressure guiding pipe of dynamic pressure tube and static tube, on reverse-blow pipe, and two of differential pressure transmitter connector places are all serially connected with solenoid valve.Differential pressure type apparatus for measuring air quantity of the present utility model, can clear up the dust in pressure guiding pipe, and can avoid the drawback of the modes such as existing suspension thin bar or sash weight.
Description
Technical field
The utility model relates to air measuring technical field, particularly a kind of differential pressure type apparatus for measuring air quantity.
Background technology
All need to measure air mass flow at the First air of garbage burning boiler, Secondary Air and flue, the flowmeter that what current use was more is based on differential pressure principle, this flowmeter needs the air pressure in pipeline can guide to differential pressure transmitter place via pressure guiding pipe.In actual use, along with the increase of time, can be blocked by dust in pressure guiding pipe, thus cause differential pressure transmitter place cannot obtain air pressure accurately can value.For avoiding pressure guiding pipe to be blocked by dust, in prior art, there is people to adopt the method suspending thin bar or sash weight in pressure guiding pipe, to carry out disturbance by sash weight or rocking of thin bar to dust, and then stoping dust in pressure guiding pipe inner accumulated.But suspension thin bar or sash weight also can cause disturbance to the air pressure guided in dynamic pressure tube and static tube, thus can affect the degree of accuracy of wind pressure measurement.
Utility model content
In view of this, the utility model is intended to propose a kind of differential pressure type apparatus for measuring air quantity, can clear up the dust in pressure guiding pipe, and can avoid the drawback of the modes such as existing suspension thin bar or sash weight.
For achieving the above object, the technical solution of the utility model is achieved in that
A kind of differential pressure type apparatus for measuring air quantity, comprise the impulse assembly that many groups of being arranged on airduct pipeline are made up of the dynamic pressure tube arranged back-to-back and static tube, groove shape is arranged in one end that described dynamic pressure tube is positioned at airduct pipeline, and the end that dynamic pressure tube is groove shape is arranged windward, the flat mouth shape parallel with air current flow direction is arranged in one end that described static tube is positioned at airduct pipeline, dynamic pressure tube in each impulse assembly and static tube respectively by pressure guiding pipe be connected in parallel in together with, and be connected to two connector places of differential pressure transmitter, described airduct pipeline is positioned at the upstream that impulse assembly arranges position and is connected with a reverse-blow pipe, the other end of described reverse-blow pipe is connected on the pressure guiding pipe of dynamic pressure tube and static tube, on described reverse-blow pipe, and two of differential pressure transmitter connector places are all serially connected with solenoid valve.
Further, described each impulse assembly is evenly arranged along the circumference of airduct pipeline.
Further, described reverse-blow pipe is serially connected with booster fan.
Further, the both sides in booster fan on described reverse-blow pipe are all serially connected with solenoid valve.
Relative to prior art, the utility model has following advantage:
This differential pressure type apparatus for measuring air quantity, the reverse-blow pipe that impulse assembly arranges the upstream at position is positioned at by arranging to be connected on airduct pipeline, and make the other end of reverse-blow pipe be connected in each pressure guiding pipe, and solenoid valve is set at the connector place of reverse-blow pipe and differential pressure transmitter, thus can the keying of periodic Controlling solenoid valve, and utilize the gas in airduct pipeline to clear up the dust gathered in pressure guiding pipe and dynamic pressure tube and static tube.Owing to not arranging any component in dynamic pressure tube and static tube, thus it is compared to modes such as existing suspension thin bar or sash weights, on the basis realizing dust cleaning, avoids the drawback air pressure guided in dynamic pressure tube and static tube being caused to disturbance.
Each impulse assembly is evenly arranged along airduct pipeline circumference, can contribute to the accuracy improving air measuring.Reverse-blow pipe is connected in series booster fan, in airduct pipeline during blast deficiency, supercharging can be carried out to the gas in reverse-blow pipe, to ensure the cleaning effect to dust.And solenoid valve is all set in the both sides of booster fan on reverse-blow pipe, the sealing effect to it under reverse-blow pipe off position can be ensured, avoid impacting the pressure in pressure guiding pipe.
Accompanying drawing explanation
The accompanying drawing forming a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structure diagram of the differential pressure type apparatus for measuring air quantity described in the utility model embodiment;
Description of reference numerals:
1-airduct pipeline, 2-dynamic pressure tube, 3-static tube, 4-dynamic pressure pressure guiding pipe, 5-static pressure pressure guiding pipe, 6-differential pressure transmitter, 7-reverse-blow pipe, 8-blowback solenoid valve, 9-dynamic pressure solenoid valve, 10-static motorized magnet valve.
Embodiment
It should be noted that, when not conflicting, the embodiment in the utility model and the feature in embodiment can combine mutually.
Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
The present embodiment relates to a kind of differential pressure type apparatus for measuring air quantity, as shown in fig. 1, it comprises the impulse assembly that many groups (the merely illustrating a group in figure) be arranged on airduct pipeline 1 is made up of the dynamic pressure tube 2 arranged back-to-back and static tube 3, groove shape is arranged in one end that dynamic pressure tube 2 is positioned at airduct pipeline 1, and the end of dynamic pressure tube 2 in groove shape is arranged windward.The flat mouth shape parallel with air current flow direction is then arranged in one end that static tube 3 is positioned at airduct pipeline 1.Multiple dynamic pressure tubes 2 in each impulse assembly and static tube 3 respectively by dynamic pressure pressure guiding pipe 4 and static pressure pressure guiding pipe 5 be connected in parallel in together with, and be connected to two connector places of differential pressure transmitter 6.
Airduct pipeline 1 is positioned at the upstream that impulse assembly arranges position and is connected with reverse-blow pipe 7, the other end of reverse-blow pipe 7 is connected on dynamic pressure pressure guiding pipe 4 and static pressure pressure guiding pipe 5, on reverse-blow pipe 7, and two of differential pressure transmitter 6 connector places are all serially connected with blowback solenoid valve 8 and dynamic pressure solenoid valve 9, static motorized magnet valve 10 respectively.The circumference that in the present embodiment, each impulse assembly can be along airduct pipeline 1 is evenly arranged, to contribute to the accuracy improving air measuring.And be, when blast is not enough in airduct pipeline 1, supercharging is carried out to the gas in reverse-blow pipe 7, to ensure the cleaning effect to dust, in the present embodiment, on reverse-blow pipe 7, is also serially connected with booster fan 11.And blowback solenoid valve 8 is all serially connected with in the both sides of booster fan 11 on reverse-blow pipe 7, the sealing effect to it under reverse-blow pipe 7 off position can be ensured like this, avoid impacting the pressure in dynamic pressure pressure guiding pipe 4 and static pressure pressure guiding pipe 5.
This differential pressure type apparatus for measuring air quantity, the reverse-blow pipe 7 that impulse assembly arranges the upstream at position is positioned at by arranging to be connected on airduct pipeline 1, and make the other end of reverse-blow pipe 7 be connected in dynamic pressure pressure guiding pipe 4 and static pressure pressure guiding pipe 5, and at the connector place of reverse-blow pipe 7 and differential pressure transmitter 6, all solenoid valve is set, thus by the keying of periodic Controlling solenoid valve, and utilize gas in airduct pipeline 1 to dynamic pressure tube 2 and static tube 3, and connect the dust gathered in pressure guiding pipe thereon and clear up.Owing to not arranging any component in dynamic pressure tube 2 and static tube 3, thus it is compared to modes such as existing suspension thin bar or sash weights, on the basis realizing dust cleaning, avoid the drawback air pressure guided in dynamic pressure tube 2 and static tube 3 being caused to disturbance, ensure that the accuracy of air measuring.
In use, when having gas to flow in airduct pipeline 1, the pressure tappings of dynamic pressure tube 2 is by gas shock, and the kinetic energy of air-flow converts the pressure energy in dynamic pressure tube 2 to herein, and the pressure thus in dynamic pressure tube 2 is higher, and its pressure is called " total head " for this device.Static tube 3 is not owing to being subject to air-flow punching press, and the pressure in it is the static pressure in airduct, and its pressure is called " static pressure ".The difference of total head and static pressure is called differential pressure, and its size is relevant with the air quantity in airduct pipeline 1, and air quantity is larger, differential pressure is larger, and the little differential pressure of air quantity is also little, as long as therefore measure the size of differential pressure, find out the corresponding relation of differential pressure and air quantity again, just correctly can measure air quantity in pipe.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1. a differential pressure type apparatus for measuring air quantity, comprise the impulse assembly that many groups of being arranged on airduct pipeline are made up of the dynamic pressure tube arranged back-to-back and static tube, groove shape is arranged in one end that described dynamic pressure tube is positioned at airduct pipeline, and the end that dynamic pressure tube is groove shape is arranged windward, the flat mouth shape parallel with air current flow direction is arranged in one end that described static tube is positioned at airduct pipeline, dynamic pressure tube in each impulse assembly and static tube respectively by pressure guiding pipe be connected in parallel in together with, and be connected to two connector places of differential pressure transmitter, it is characterized in that: on described airduct pipeline, be positioned at the upstream that impulse assembly arranges position be connected with a reverse-blow pipe, the other end of described reverse-blow pipe is connected on the pressure guiding pipe of dynamic pressure tube and static tube, on described reverse-blow pipe, and two of differential pressure transmitter connector places are all serially connected with solenoid valve.
2. differential pressure type apparatus for measuring air quantity according to claim 1, is characterized in that: described each impulse assembly is evenly arranged along the circumference of airduct pipeline.
3. differential pressure type apparatus for measuring air quantity according to claim 2, is characterized in that: on described reverse-blow pipe, be serially connected with booster fan.
4. differential pressure type apparatus for measuring air quantity according to claim 3, is characterized in that: the both sides in booster fan on described reverse-blow pipe are all serially connected with solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520159548.0U CN204594509U (en) | 2015-03-20 | 2015-03-20 | Differential pressure type apparatus for measuring air quantity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520159548.0U CN204594509U (en) | 2015-03-20 | 2015-03-20 | Differential pressure type apparatus for measuring air quantity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204594509U true CN204594509U (en) | 2015-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520159548.0U Expired - Fee Related CN204594509U (en) | 2015-03-20 | 2015-03-20 | Differential pressure type apparatus for measuring air quantity |
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| Country | Link |
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| CN (1) | CN204594509U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105716670A (en) * | 2016-04-21 | 2016-06-29 | 承德菲时博特自动化设备有限公司 | Multichannel rectangular needle tube flow measurement device |
| CN105784020A (en) * | 2016-04-21 | 2016-07-20 | 承德菲时博特自动化设备有限公司 | Rectangular needle tube flowmeter |
| CN106353532A (en) * | 2016-09-18 | 2017-01-25 | 国网江西省电力公司电力科学研究院 | Large-calibre wear-resistant ceramic wind speed measurement device with anti-blocking and reverse-blowing functions |
| CN106670191A (en) * | 2017-03-09 | 2017-05-17 | 聊城信源集团有限公司 | Anti-blocking device for high-dust measuring pressure tapping pipeline |
-
2015
- 2015-03-20 CN CN201520159548.0U patent/CN204594509U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105716670A (en) * | 2016-04-21 | 2016-06-29 | 承德菲时博特自动化设备有限公司 | Multichannel rectangular needle tube flow measurement device |
| CN105784020A (en) * | 2016-04-21 | 2016-07-20 | 承德菲时博特自动化设备有限公司 | Rectangular needle tube flowmeter |
| CN106353532A (en) * | 2016-09-18 | 2017-01-25 | 国网江西省电力公司电力科学研究院 | Large-calibre wear-resistant ceramic wind speed measurement device with anti-blocking and reverse-blowing functions |
| CN106670191A (en) * | 2017-03-09 | 2017-05-17 | 聊城信源集团有限公司 | Anti-blocking device for high-dust measuring pressure tapping pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180806 Address after: 100082 Beijing Haidian District Xizhimen North Street 42 energy saving building 15 Floor China Environmental Protection Group Co., Ltd. Co-patentee after: Chengde Huan Neng Power Co., Ltd. Patentee after: China Environment Protection Group Co Ltd Address before: 067000 Taiping Village South of Dashi temple, Shuangqiao District, Chengde, Hebei Patentee before: Chengde Huan Neng Power Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20200320 |
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| CF01 | Termination of patent right due to non-payment of annual fee |