CN204832238U - Integration air speed measuring device - Google Patents
Integration air speed measuring device Download PDFInfo
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- CN204832238U CN204832238U CN201520617292.3U CN201520617292U CN204832238U CN 204832238 U CN204832238 U CN 204832238U CN 201520617292 U CN201520617292 U CN 201520617292U CN 204832238 U CN204832238 U CN 204832238U
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- differential pressure
- pressure transmitter
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Abstract
The utility model provides an integration air speed measuring device belongs to amount of wind determination field. This integration air speed measuring device includes: the fixed connector who presses component, union and be used for being connected is once got with the equipment of awaiting measuring to differential pressure transmitter, wind speed, fixed even with the wind speed is once got and is pressed component fixed connection, the both ends of union set up front end opening and rear end opening respectively, be provided with the cavity in the union, the cavity respectively with the front end opening rear end opening intercommunication constitutes the transfer passage who supplies the measured flow body to pass through, differential pressure transmitter passes through the union with the wind speed is once got and is pressed component connection, the front end opening with the wind speed is once got and is pressed component connection, the rear end opening with differential pressure transmitter connects. Owing to adopt the integrated design, differential pressure transmitter and wind speed are once got the pressure component and are directly linked, and reducible pipe -line system breaks down, loss of pressure's problem to improve measurement accuracy.
Description
Technical field
The utility model relates to air-quantity measuring technical field, in particular to integrated wind speed measuring device.
Background technology
Along with the continuous propelling of China's process of industrialization, the pollution level of environment is constantly aggravated, and atmosphere polluting problem also increases the weight of gradually, and flue gas constitutes one of atmospheric pollution and originates greatly.The flow measuring flue gas is significant on the impact of environment on evaluation of flue gas discharge.Existing flow measurement many uses differential pressure type air measuring is to measure the flow of flue gas.
At present, most differential pressure type apparatus for measuring air quantity is all be connected with differential pressure transmitter by primary air velocity pressure element with pressure guiding pipe, thus transfers the pressure to differential pressure transmitter.Because pressure guiding pipe has certain length, and the medium transmitted is the air that can compress, and will have loss and postpone, if pipeline breaks down can increase the difficulty of check processing by build-up of pressure like this in transport process.
Utility model content
The purpose of this utility model is to provide a kind of integrated wind speed measuring device, to reduce the loss that pressure transmits, reduces the maintenance of measurement mechanism, maintenance difficulties.
The utility model is achieved in that
Integration wind speed measuring device, comprise: differential pressure transmitter, wind speed pressure element, articulation and the fixed connecting piece for being connected with Devices to test, described fixing part and described wind speed pressure element that connects is fixedly connected with, the two ends of described articulation arrange front opening and open rearward end respectively, cavity is provided with in described articulation, described cavity respectively with described front opening, described open rearward end is communicated with the transfer passage forming and pass through for measurement fluid, described differential pressure transmitter is connected by described articulation and described wind speed pressure element, described front opening and described wind speed pressure element is connected, described open rearward end is connected with described differential pressure transmitter.
Preferably, described fixed connecting piece is joint flange, and described joint flange is socketed on described wind speed pressure element.Because wind speed measuring device needs to stretch into the wind speed of flowing of various pipeline, tank in-vivo measurement air, and pressure differential situation of change during mainly air flowing that it detects.Therefore, need wind speed pressure element to have good stability, reduce and self rock interference to measuring accuracy when measuring air flowing.The use of joint flange makes wind speed pressure element can be fixed on pipeline or equipment, is convenient to connect and dismounting.
Preferably, the rubber washer mated with described joint flange is also comprised.When utilizing joint flange to fix a wind speed pressure element, rubber washer is sheathed on joint flange, then airtight by rubber washer between the connecting portion of joint flange and equipment to be measured.The good leak tightness of rubber washer, can avoid the leakage of air, prevent the pressure loss, and long service life, has good adaptive capacity to environment.
Preferably, described front opening and described wind speed pressure element flights is connected, and described open rearward end is threaded with described differential pressure transmitter.The mode that articulation and differential pressure transmitter, pressure part are threaded connection, realizes removably connecting, and user can change wind speed pressure element, a differential pressure transmitter as required.
Preferably, described open rearward end is provided with the first external thread, and described differential pressure transmitter is provided with the first internal thread mated with described first external thread.
Preferably, described open rearward end is provided with the second internal thread, and described differential pressure transmitter is provided with the second external thread mated with described second internal thread.
Preferably, described articulation comprises the canned paragraph and extension that connect successively, the diameter of described canned paragraph is greater than the diameter of described extension, described open rearward end is arranged at described canned paragraph one end away from described extension, and described front opening is arranged at described extension one end away from described canned paragraph.Articulation step-by-step design; and the diameter being directly greater than extension of canned paragraph; canned paragraph diameter can guarantee greatly connection compactedness and the firmness of articulation and differential pressure transmitter, and the little convenient transmission controlling air of diameter of extension, reduces the pressure loss of the air of conveying.
Preferably, also comprise: nut, described nut is provided with coaxial screw and stepped hole, the diameter of described stepped hole is less than the diameter of the screw of described nut, be provided with retaining thread in described screw, described differential pressure transmitter is provided with the 3rd external thread mated with described retaining thread, and described canned paragraph is positioned at described stepped hole, described extension stretches out outside described nut, and described canned paragraph is connected with described differential pressure transmitter by described nut.Articulation is connected with differential pressure transmitter by nut, and the canned paragraph of articulation does not need to arrange screw thread, thus reduces canned paragraph and arrange screw thread and the impact reducing its intensity, is extended the serviceable life of articulation, reduces the manufacture difficulty of articulation simultaneously.
Preferably, also comprise: pad, described pad is provided with through hole, and described through hole is communicated with described transfer passage, and described pad is between described differential pressure transmitter and described open rearward end.The setting of pad makes the connection between differential pressure transmitter and articulation more tight, and leakproofness is higher, can prevent from leaking in transfer of air process.
Preferably, described pad is made by resilient material.The pad that resilient material is made has and under external force deformation occurs, and after external forces disappears, the deformation that pad occurs disappears.Pad is arranged between differential pressure transmitter and articulation, can bear certain vibration, and when avoiding vibrating, the situation of leaking occurs in junction, thus reduces decay and the loss of pressure.
Preferably, described nut is hexagonal nut.Hexagonal nut is convenient to knob, lowers the fixing difficulty of articulation, when needing fixing articulation, uses hex wrench.
The beneficial effects of the utility model:
The utility model provides a kind of integrated wind speed measuring device, and this measurement mechanism has more simple structure relative to existing measurement mechanism, and measurement mechanism entirety is compacter, stability is higher, easy to use.User can according to the actual conditions of measurement environment, by differential pressure transmitter and wind speed pressure elements combination as a whole, integrated design improves loss in transport process of pressure in piping system and delay, pipe system can be reduced break down, reduce maintenance difficulty and the frequency of measure setup.In addition, integrated design can save set-up time, the saving mounting material of measurement mechanism.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, be briefly described to the accompanying drawing used required in embodiment below, be to be understood that, the following drawings illustrate only some embodiment of the present utility model, therefore the restriction to scope should be counted as, for those of ordinary skill in the art, under the prerequisite not paying creative work, other relevant accompanying drawings can also be obtained according to these accompanying drawings.
The structural representation of the differential pressure transmitter in the integrated wind speed measuring device that Fig. 1 provides for the utility model embodiment;
The structural representation of the wind speed pressure element in the integrated wind speed measuring device that Fig. 2 provides for the utility model embodiment;
The structural representation of the articulation in the integrated wind speed measuring device that Fig. 3 provides for the utility model embodiment;
The structural representation of the nut in the integrated wind speed measuring device that Fig. 4 provides for the utility model embodiment; (not comprising retaining thread)
Articulation in the integrated wind speed measuring device that Fig. 5 provides for the utility model embodiment and the connection status schematic diagram of nut;
The structural representation of the integrated wind speed measuring device that Fig. 6 provides for the utility model embodiment.
Description of reference numerals
Differential pressure transmitter 101; Interface 102; Wind speed pressure element 103;
Articulation 104; Joint flange 106; Extension 201; Canned paragraph 202;
Nut 301; Stepped hole 302; Screw 303.
Embodiment
For making the object of the utility model embodiment, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.The assembly of the utility model embodiment describing and illustrate in usual accompanying drawing herein can be arranged with various different configuration and design.Therefore, below to the detailed description of the embodiment of the present utility model provided in the accompanying drawings and the claimed scope of the present utility model of not intended to be limiting, but selected embodiment of the present utility model is only represented.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to define further it and explain in accompanying drawing subsequently.
In description of the present utility model, it should be noted that, term " " center ", " on ", D score, " left side ", " right side ", " vertically ", " level ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, or this utility model product orientation of usually putting or position relationship when using, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second ", " the 3rd " etc. only for distinguishing description, and can not be interpreted as instruction or hint relative importance.
In description of the present utility model, also it should be noted that, unless otherwise clearly defined and limited, term " setting ", " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition the concrete meaning of above-mentioned term in the utility model can be understood.
Consult Fig. 1 to Fig. 6, present embodiments provide integrated wind speed measuring device, utilize this apparatus for measuring air quantity greatly can reduce the loss of pipeline in transmission of pressure process.Integration wind speed measuring device comprises: differential pressure transmitter 101, pressure element 103, articulation 104 and the fixed connecting piece for being connected with Devices to test, and fixing part and the wind speed pressure element that connects is fixedly connected with.The two ends of articulation 104 are respectively arranged with front opening and open rearward end, cavity is provided with in described articulation 104, described cavity is communicated with described front opening, described open rearward end respectively and forms transfer passage, described differential pressure transmitter 101 is connected with a described pressure element 103 by described articulation 104, described front opening is connected with a described pressure element 103, and described open rearward end is connected with described differential pressure transmitter 101.
Differential pressure transmitter is the pressure differential that a class measures pumped (conveying) medium in various pipeline or tank body, and the differential pressure value of measurement is converted to by the conversion of data the equipment that current signal exports.Differential pressure transmitter is different from general pressure unit, and they all have positive pressure side and negative pressure end two pressure interfaces, and generally, the pressure that the pressure of the positive pressure side of differential pressure transmitter should be greater than negative pressure end just can be measured.
Wind speed pressure element is the equipment adopting pitot tube metering system, and it comprises two pressure pipes and is respectively ram-air pipe and back pressure pipe.In the environment measuring air mass flow, ram-air pipe is in windward side, back pressure pipe is in lee face, the dynamic pressure detected and static pressure are passed to differential pressure transmitter by two pressure pipes respectively, and the difference of dynamic pressure and static pressure is converted to current signal and sends Displaying Meter to or the computing machine of measuring system carries out data processing by differential pressure transmitter.Due to the complicacy of the environment for use of apparatus for measuring air quantity, when the composition in measurement environment gas has relatively high corrosivity, certain destruction may be caused to the pressure pipe of a pressure element, an impaired pressure element declines to the detection accuracy of pressure, causes the mensuration of air quantity inaccurate.Consider based on the problems referred to above, one time pressure element generally adopts stainless steel to be made, and all sprays certain thickness anticorrosive at the inner and outer wall of pipeline, thus improves adaptive capacity to environment and the serviceable life of a pressure element.
In existing apparatus for measuring air quantity, differential pressure transmitter 101 is connected with a pressure element 103 by pressure guiding pipe, but pressure guiding pipe has certain length, and the medium transmitted in the pipe system of apparatus for measuring air quantity is the air that can compress, then in the process of carrying out air measuring, pressure has loss, postpones.In addition, the difficulty of check processing and the frequency of maintenance can be increased when pipeline breaks down.For the problems referred to above, the apparatus for measuring air quantity in the present embodiment adopts integrated design, and differential pressure transmitter 101 is connected with a pressure element 103 by articulation 104, and the pressure loss in pipe system reduces greatly.Owing to eliminating pressure guiding pipe, articulation 104 is not easy to damage, and the failure rate of measuring equipment reduces, and the stability of measuring equipment is higher, and measuring accuracy is more accurate.
When integration wind speed measuring device uses, by stationary installation, itself and measurement environment are fixed, such as, when tank body is measured, by the measurement mouth being distributed in tank body, integrated wind speed measuring device is stretched into tank body, with coordinating of tank body, measurement mechanism is fixed on body by stationary installation, prevents the situation such as to rock of measurement mechanism.In the present embodiment, stationary installation is fixed connecting piece, and fixed connecting piece and wind speed pressure element is connected, then by fixed connecting piece and equipment to be measured, as the connection such as pipeline, tank body.Be fixedly connected with the cylindrical plag that can adopt and be socketed on outside wind speed pressure element, outside cylindrical plag, screw thread be set, equipment to be measured arranges threaded hole, after apparatus for measuring air quantity stretches into equipment to be measured, utilize cylindrical plag to coordinate with threaded hole, so that fixing.Preferably, fixed connecting piece is joint flange, and joint flange is socketed on wind speed pressure element.Flange joint can freely be dismantled or install, and avoids the directly destruction of welding to pipeline, and is conducive to maintenance, the replacing in later stage.In order to improve the degree that is connected firmly between joint flange and Devices to test, wind speed measuring device also includes the rubber washer mated with described joint flange, gap plugging between being rigidly connected can be lived by rubber washer, fluid is avoided to reveal from gap, thus the pressure loss that can reduce in measuring wind speed process, contribute to improving measuring accuracy.In addition, rubber has weatherability and resistance to chemical attack relatively preferably, can use various severe measurement environment.
Articulation 104 can be fixedly connected with a pressure element 103, also can adopt and removably connect.Such as, the front opening of articulation 104 is welded in the pressurized air that a pressure element 103, pressure element 103 accepts and enters transfer passage by front opening, then by open rearward end input differential pressure transmitter 101, so that follow-up equipment is measured.
Front opening welds with a pressure element 103, then substantially increase the degree that is connected firmly between the two, articulation 104 and pressure element 103 can not delamination, avoid producing the leakage of air, the loss of pressure, thus improve the accuracy of air measuring.Because articulation 104 is less relative to the one-piece construction of differential pressure transmitter 101, pressure element 103, articulation 104 is easily lost.Articulation 104 is welded in a pressure element 103, can avoids articulation 104 that the problem lost occurs, decrease step articulation 104 be connected with pressure element 103 simultaneously.Articulation 104 and differential pressure transmitter 101 can adopt clamping, in order to improve the tightness degree of connection, can at articulation 104 outer wrapping interlayer, and articulation 104 and interlayer together stretch into the interface 102 of differential pressure transmitter 101, thus realize connecting; Articulation 104 also can utilize flexible pipe to be connected with differential pressure transmitter 101, while articulation 104 is connected with differential pressure transmitter 101, differential pressure transmitter 101 can also carry out movement to a certain degree, thus improves the Installation Flexibility of apparatus for measuring air quantity, can realize Fast Installation in some particular surroundingss.
Front opening also can adopt with a pressure element 103 and be threaded, and open rearward end is threaded with differential pressure transmitter 101.Articulation 104 is connected with pressure element 103, a differential pressure transmitter 101 respectively by the mode be threaded, then articulation 104 can freely be dismantled and install, and also can change the articulation 104 of different model as required.The mode be threaded makes the attended operation between articulation 104 and pressure element 103, differential pressure transmitter 101 easier.
Particularly, open rearward end is provided with the first external thread, and differential pressure transmitter 101 is provided with the first internal thread mated with the first external thread; Front opening is provided with the first front end external thread, and one time pressure element 103 is provided with the first front end internal thread mated with the first front end external thread.As another kind of implementation, open rearward end is provided with the second internal thread, and differential pressure transmitter 101 is provided with the second external thread mated with the second internal thread; Front opening is provided with the second front end external thread, and one time pressure element 103 is provided with the second front end internal thread mated with the second front end external thread.In addition, also can adopt that front opening arranges internal thread, open rearward end arranges external thread, or front opening arranges external thread, open rearward end arranges internal thread, the present embodiment is being specifically limited of connecting of double thread not, can select the set-up mode of screw thread as required.
In order to improve the connectivity robustness of articulation 104 and differential pressure transmitter 101, pressure element 103, articulation 104 is divided into two sections, is respectively the canned paragraph 202 and extension 201 that connect successively.Wherein, the diameter of canned paragraph 202 is greater than the diameter of extension 201, and open rearward end is arranged at canned paragraph 202 one end away from extension 201, and front opening is arranged at extension 201 one end away from canned paragraph 202.Front opening designs for pressure element 103, open rearward end designs for differential pressure transmitter 101, makes the connection of articulation 104 more pointed, connects more stable.The relatively large open rearward end of caliber is connected with differential pressure transmitter 101 more fully, contact area is larger, and the degree that is connected firmly is high; The front opening that caliber is relatively little is connected with a pressure element 103, and the air pressure variations making to enter the transfer passage of articulation 104 by pressure element 103 is little, avoids the pressure loss, improves the accuracy measured.
Preferably, integrated wind speed measuring device also comprises nut 301, and one end of articulation 104 adjacent back end opening is connected with differential pressure transmitter 101 by nut 301.While nut 301 connection moving joint 104 and differential pressure transmitter 101, also articulation 104 being played a protective role, preventing articulation 104 from being damaged by colliding with.In addition, nut 301 has certain height, and nut 301 is larger with the contact area of articulation 104, differential pressure transmitter 101, connects more firm.Nut 301 is hexagonal nut 301, utilizes hex wrench to get final product easy manipulation nut 301, installs or dismounting articulation 104.
Particularly, nut 301 is provided with coaxial screw 303 and stepped hole 302, and the diameter of stepped hole 302 is less than the diameter of the screw 303 of nut 301.Be provided with retaining thread in screw 303, differential pressure transmitter 101 is provided with the 3rd external thread mated with retaining thread.Canned paragraph 202 is positioned at stepped hole 302, and extension 201 stretches out outside nut 301, and canned paragraph 202 is connected with differential pressure transmitter 101 by nut 301.Nut 301 coordinates with articulation 104 and forms convex shape structure, and canned paragraph 202 is wrapped in screw 303 by nut 301, and the extension 201 stretched out outside screw 303 is connected with a pressure element 103, and 301, nut and differential pressure transmitter 101 are threaded connection.By knob nut 301, nut 301 drives fixed band to move, and along with continuous knob nut 301, canned paragraph 202 is fitted with the interface 102 of differential pressure transmitter 101, and then articulation 104 is connected with differential pressure transmitter 101.
Further, integrated wind speed measuring device also comprises pad, and pad is provided with through hole, and this through hole is communicated with transfer passage.When utilizing nut 301 connection moving joint 104, pad is between differential pressure transmitter 101 and open rearward end, and egative film serves as isolated material.Due to the rigid contact between differential pressure transmitter 101 and articulation 104, during rotating nut 301, pad can avoid both directly mutually extruding and damaged.Preferably, pad is made by resilient material.Because pad adopts resilient material to make, pad can recover original structure and shape in a certain degree internal strain, and namely pad can as damping and the use preventing wearing and tearing.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.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 (10)
1. an integrated wind speed measuring device, it is characterized in that, comprise: differential pressure transmitter, wind speed pressure element, articulation and the fixed connecting piece for being connected with Devices to test, described fixing part and described wind speed pressure element that connects is fixedly connected with, the two ends of described articulation arrange front opening and open rearward end respectively, cavity is provided with in described articulation, described cavity respectively with described front opening, described open rearward end is communicated with the transfer passage forming and pass through for measurement fluid, described differential pressure transmitter is connected by described articulation and described wind speed pressure element, described front opening and described wind speed pressure element is connected, described open rearward end is connected with described differential pressure transmitter.
2. integrated wind speed measuring device according to claim 1, is characterized in that, described fixed connecting piece is joint flange, and described joint flange is socketed on described wind speed pressure element.
3. integrated wind speed measuring device according to claim 2, is characterized in that, also comprises the rubber washer mated with described joint flange.
4. integrated wind speed measuring device according to claim 1, is characterized in that, described front opening and described wind speed pressure element flights is connected, and described open rearward end is threaded with described differential pressure transmitter.
5. integrated wind speed measuring device according to claim 4, is characterized in that, described open rearward end is provided with the first external thread, and described differential pressure transmitter is provided with the first internal thread mated with described first external thread.
6. integrated wind speed measuring device according to claim 4, is characterized in that, described open rearward end is provided with the second internal thread, and described differential pressure transmitter is provided with the second external thread mated with described second internal thread.
7. integrated wind speed measuring device according to claim 1, it is characterized in that, described articulation comprises the canned paragraph and extension that connect successively, the diameter of described canned paragraph is greater than the diameter of described extension, described open rearward end is arranged at described canned paragraph one end away from described extension, and described front opening is arranged at described extension one end away from described canned paragraph.
8. integrated wind speed measuring device according to claim 7, it is characterized in that, also comprise: nut, described nut is provided with coaxial screw and stepped hole, the diameter of described stepped hole is less than the diameter of the screw of described nut, retaining thread is provided with in described screw, described differential pressure transmitter is provided with the 3rd external thread mated with described retaining thread, described canned paragraph is positioned at described stepped hole, described extension stretches out outside described nut, and described canned paragraph is connected with described differential pressure transmitter by described nut.
9. integrated wind speed measuring device according to claim 8, is characterized in that, also comprise: pad, and described pad is provided with through hole, and described through hole is communicated with described transfer passage, and described pad is between described differential pressure transmitter and described open rearward end.
10. integrated wind speed measuring device according to claim 9, is characterized in that, described pad is made by resilient material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520617292.3U CN204832238U (en) | 2015-08-14 | 2015-08-14 | Integration air speed measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520617292.3U CN204832238U (en) | 2015-08-14 | 2015-08-14 | Integration air speed measuring device |
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| Publication Number | Publication Date |
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| CN204832238U true CN204832238U (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520617292.3U Active CN204832238U (en) | 2015-08-14 | 2015-08-14 | Integration air speed measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525172A (en) * | 2016-11-16 | 2017-03-22 | 东南大学 | Power station air-gas flue flow measurement device |
-
2015
- 2015-08-14 CN CN201520617292.3U patent/CN204832238U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525172A (en) * | 2016-11-16 | 2017-03-22 | 东南大学 | Power station air-gas flue flow measurement device |
| CN106525172B (en) * | 2016-11-16 | 2019-04-30 | 东南大学 | A kind of power station wind and smoke road flow measurement device |
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Address after: 211200 environmental protection industrial park, Lishui Economic Development Zone, Nanjing, Jiangsu Patentee after: Nanjing Yi Hua environmental Polytron Technologies Inc Address before: 211200 environmental protection industrial park, Lishui Economic Development Zone, Nanjing, Jiangsu Patentee before: The Nanjing supporting company limited of the color environmental engineering of benefit |