CN204346513U - A kind of anti-corrosion type self-cleaning flow measurement device - Google Patents
A kind of anti-corrosion type self-cleaning flow measurement device Download PDFInfo
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- CN204346513U CN204346513U CN201420784290.9U CN201420784290U CN204346513U CN 204346513 U CN204346513 U CN 204346513U CN 201420784290 U CN201420784290 U CN 201420784290U CN 204346513 U CN204346513 U CN 204346513U
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Abstract
The utility model discloses a kind of anti-corrosion type self-cleaning flow measurement device, comprise monomer flow gauge; Automatically cleaning pendulum rod is provided with in described total head pressure pipe in described monomer flow gauge and described static pressure pressure pipe; The described outside dimension of automatically cleaning pendulum rod and the bore size of described total head pressure pipe and described static pressure pressure pipe adapt; And described total head pressure pipe in described monomer flow gauge and described static pressure pressure pipe are two phase stainless steel pipe fitting; The anti-corrosion type self-cleaning flow measurement device that the utility model provides, has anti-clogging and anticorrosive, measuring accuracy high-technology advantage.
Description
Technical field
The utility model relates to desulfurizing and purifying equipment technical field, especially relates to a kind of anti-corrosion type self-cleaning flow measurement device.
Background technology
At present, in industrially desulfurized flue, carry out gas flow rate, the measurement majority of gas flow adopts single-point type Pitot tube flowmeter (i.e. this single-point type Pitot tube flowmeter can only single-point insertion flue measure).
But in practice, current desulfurization fume pipeline relates generally to complicated gas, the solid, liquid three-phase mixed flue gas pipeline such as generating plant desulfurization fume pipeline and cement mill, steelworks, chemical plant.The corrosivity air-flow of the gas obviously often containing large quantity of moisture in the gas of this complexity, solid, liquid three-phase mixed flue gas pipeline, the mixing of solid, liquid three-phase, can generate mortar after the ashes in desulfurization fume mixes with steam, very easily be attached on measurement mechanism.Thus the total head pressure tappings of blocking single-point type Pitot tube flowmeter and static pressure tapping, and then cause signal deletion, the decline of measuring accuracy.
Simultaneously in desulfurization fume pipeline, the corrosive gas such as complete absorbed SO2, NOX can not generate acid solution after being combined with moisture, produces great corrosive attack to measurement mechanism.Conventional single-point type Pitot tube flowmeter has just damaged in very short time in this environment.
The technological deficiency that how can overcome the anticorrosive difference of measuring equipment in prior art is obviously those skilled in the art's technical matterss urgently to be resolved hurrily.
Utility model content
The purpose of this utility model is to provide a kind of anti-corrosion type self-cleaning flow measurement device, to solve the problem.
In order to achieve the above object, the technical solution of the utility model is achieved in that
The utility model provided a kind of anti-corrosion type self-cleaning flow measurement device, comprised monomer flow gauge; Automatically cleaning pendulum rod is provided with in described total head pressure pipe in described monomer flow gauge and described static pressure pressure pipe; The described outside dimension of automatically cleaning pendulum rod and the bore size of described total head pressure pipe and described static pressure pressure pipe adapt;
And described total head pressure pipe in described monomer flow gauge and described static pressure pressure pipe are two phase stainless steel pipe fitting.
Preferably, as a kind of embodiment, the described total head pressure pipe in described monomer flow gauge and described static pressure pressure pipe are the two phase stainless steel pipe fitting containing molybdenum.
Preferably, as a kind of embodiment, described flow of monomer counts single-point type Pitot tube flowmeter.
Preferably, as a kind of embodiment, the top being positioned at one end of the described automatically cleaning pendulum rod of described total head pressure pipe inside and described total head pressure pipe is hinged, and the other end stretches out the total head pressure tappings of described total head pressure pipe;
The top being positioned at one end of the described automatically cleaning pendulum rod of described static pressure pressure pipe inside and described static pressure pressure pipe is hinged, and the other end stretches out the static pressure tapping of described static pressure pressure pipe.
Preferably, as a kind of embodiment, also comprise differential pressure transmitter, the described flow of monomer in described anti-corrosion type self-cleaning flow measurement device is counted multiple; And multiple monomer flow gauge is uniformly distributed along the shape of cross section at flue place;
The pressure guiding pipe of the total head pressure pipe of each described monomer flow gauge is all communicated with a total pressure guiding pipe of total head, and the pressure guiding pipe of the static pressure pressure pipe of each described monomer flow gauge is all communicated with a total pressure guiding pipe of static pressure; And the total pressure guiding pipe of described total head is communicated with the malleation mouth of pipe of described differential pressure transmitter, the total pressure guiding pipe of described static pressure is communicated with the negative pressure mouth of pipe of described differential pressure transmitter.
Preferably, as a kind of embodiment, the shape of cross section at described flue place is rectangle; And multiple monomer flow gauge along on the xsect of flue place rectangle in matrix form setting spaced apart.
Preferably, as a kind of embodiment, the cross sectional dimensions of the rectangle at described flue place is 4000X5000mm
2.
Preferably, as a kind of embodiment, multiple flow of monomer counts 16, and multiple monomer flow gauge is along the array format setting spaced apart in 4X4 on the xsect of flue place rectangle.
Preferably, as a kind of embodiment, the described total head pressure pipe in described monomer flow gauge and described static pressure pressure pipe are UNS S32304 two phase stainless steel pipe fitting.
Compared with prior art, the advantage of the utility model embodiment is:
A kind of anti-corrosion type self-cleaning flow measurement device that the utility model provides, in the utility model concrete structure, is provided with automatically cleaning pendulum rod in the described total head pressure pipe in each described monomer flow gauge and described static pressure pressure pipe; The described outside dimension of automatically cleaning pendulum rod and the bore size of described total head pressure pipe and described static pressure pressure pipe adapt.Analysis said structure is known: in order to solve the blockage problem of measurement mechanism under gas, solid, two-phase fluid complex working condition, the pressure tappings of monomer flow gauge has been set up from deashing device (i.e. automatically cleaning pendulum rod), namely in the vertical section of monomer flow gauge, set up automatically cleaning pendulum rod, do random swing under the impact of this rod air-flow in pipe, play self-cleaning effect.
Automatically cleaning pendulum rod can swing with the wind arbitrarily in the total head pressure pipe and static pressure pressure pipe of monomer flow gauge.Because automatically cleaning pendulum rod will realize randomly freely swinging in the gas of the air scale of construction, be like this gathered in the solid particle of pressure tappings and the dust of humidity, can come off under the collision and disturbance of rod, sedimentation, takes away with flue gas.Doing so avoids solid particulate matter and dust, to enter monomer whose flowmeter inner, affects its measuring accuracy and serviceable life.
In addition, the described total head pressure pipe in described monomer flow gauge and described static pressure pressure pipe are two phase stainless steel pipe fitting; Two phase stainless steel has excellent corrosion resistance and especially outstanding resistance to pitting performance, and then can solve the problem of the anti-gas attack difference of measurement mechanism of the prior art.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is monomer flow gauge structural representation in the anti-corrosion type self-cleaning flow measurement device that provides of the utility model embodiment;
Monomer flow gauge structural principle schematic diagram in the anti-corrosion type self-cleaning flow measurement device that Fig. 2 provides for the utility model embodiment;
Fig. 3 is the simple and easy schematic diagram of anti-corrosion type self-cleaning flow measurement device that the utility model embodiment provides;
The structural representation of the anti-corrosion type self-cleaning flow measurement device that Fig. 4 provides for the utility model embodiment;
Reference numeral:
1-monomer flow gauge; 2-total head pressure pipe; The total pressure guiding pipe of 3-total head;
4-static pressure pressure pipe; 41-static pressure tapping; 6-automatically cleaning pendulum rod;
21-total head pressure tappings.
Embodiment
Be clearly and completely described the technical solution of the utility model below in conjunction with accompanying drawing, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.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.
In description of the present utility model, it should be noted that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", " outward " they be based on orientation shown in the drawings or position relationship; be only the utility model and simplified characterization for convenience of description; instead of instruction or imply 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 " only for describing object, and can not be interpreted as instruction or hint relative importance.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " 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.
Also by reference to the accompanying drawings the utility model is described in further detail below by specific embodiment.
See Fig. 1, a kind of anti-corrosion type self-cleaning flow measurement device that the utility model embodiment provides, comprises monomer flow gauge 1; Automatically cleaning pendulum rod 6 is provided with in described total head pressure pipe 2 in described monomer flow gauge 1 and described static pressure pressure pipe 4; The described automatically cleaning pendulum rod outside dimension of 6 and the bore size of described total head pressure pipe and described static pressure pressure pipe adapt;
And described total head pressure pipe 2 in described monomer flow gauge 1 and described static pressure pressure pipe 4 are two phase stainless steel pipe fitting.
Wherein, the one end being positioned at the described automatically cleaning pendulum rod 6 of described total head pressure pipe 2 inside is hinged with the top of described total head pressure pipe 2, and the other end of described automatically cleaning pendulum excellent 6 stretches out the total head pressure tappings 21 of described total head pressure pipe 2; The one end being positioned at the described automatically cleaning pendulum rod 6 of described static pressure pressure pipe 4 inside is hinged with the top of described static pressure pressure pipe 4, and the other end of described automatically cleaning pendulum excellent 6 stretches out the static pressure tapping 41 of described static pressure pressure pipe 4.
As everyone knows, existing gas flow surveying instrument easily occurs blocking problem that is serious and corrosion-resistant; Wherein: blockage problem be because desulfurization fume be gas containing large quantity of moisture, the corrosivity air-flow that mixes of solid, liquid three-phase, can mortar be generated after the ashes in desulfurization fume mixes with steam, very easily be attached on measurement mechanism.Thus the pressure tappings of blocking Pitot tube, cause signal deletion.Corrosion-resistant: in desulfurization fume, the corrosive gas such as complete absorbed SO2, NOX can not generate acid solution after being combined with moisture, produces corrosion greatly to measurement mechanism.Conventional Pitot tube has just damaged in very short time in this environment.In order to solve the problems of the technologies described above, the anti-corrosion type self-cleaning flow measurement device that the utility model embodiment provides;
In the utility model specific embodiments, in the described total head pressure pipe in each described monomer flow gauge and described static pressure pressure pipe, be provided with automatically cleaning pendulum rod; The described outside dimension of automatically cleaning pendulum rod and the bore size of described total head pressure pipe and described static pressure pressure pipe adapt.Analysis said structure is known: in order to solve the blockage problem of measurement mechanism under gas, solid, two-phase fluid complex working condition, the pressure tappings of monomer flow gauge has been set up from deashing device (i.e. automatically cleaning pendulum rod), namely in the vertical section of monomer flow gauge, set up automatically cleaning pendulum rod, random swing is done under the impact of this rod air-flow in pipe, the deadweight and the thickness that play self-cleaning effect rod are through the experiment before dispatching from the factory to determine, experiment table draws according to the design wind speed in each airduct, air quantity range test.Rod too heavy too gently or too slightly too carefully all can not meet the requirements (namely the outside dimension of automatically cleaning pendulum rod and the bore size of described total head pressure pipe and described static pressure pressure pipe adapt).
Wherein, the top being positioned at one end of the described automatically cleaning pendulum rod of described total head pressure pipe inside and described total head pressure pipe is hinged, and the other end stretches out the total head pressure tappings of described total head pressure pipe; The top being positioned at one end of the described automatically cleaning pendulum rod of described static pressure pressure pipe inside and described static pressure pressure pipe is hinged, and the other end stretches out the static pressure tapping of described static pressure pressure pipe.Can ensure that automatically cleaning pendulum rod is in the total head pressure pipe of monomer flow gauge and having swung with the wind arbitrarily of static pressure pressure pipe by above-mentioned articulated manner.Because automatically cleaning pendulum rod will realize randomly freely swinging in the gas of the air scale of construction, because automatically cleaning pendulum rod will realize randomly freely swinging in the gas of the air scale of construction, like this be gathered in the solid particle of pressure tappings and the dust of humidity, can come off under the collision and disturbance of rod, sedimentation, takes away with flue gas.Doing so avoids solid particulate matter and dust, to enter monomer whose flowmeter inner, affects its measuring accuracy and serviceable life.
In addition, the described total head pressure pipe in described monomer flow gauge and described static pressure pressure pipe are two phase stainless steel pipe fitting;
It should be noted that, two phase stainless steel (Duplex Stainless Steel is called for short DSS), refer to that ferrite and austenite respectively account for 50%, the content of generally comparatively looking younger needs the stainless steel reaching 30% at least.When containing C lower, Cr content at 18% ~ 28%, Ni content 3% ~ 10%.Some steel is also containing alloying elements such as Mo, Cu, Nb, Ti, N.Two phase stainless steel is compared with traditional stainless steel, and intensity high and intergranular corrosion resistance and resistance to chloride stress corrosion are significantly improved.Two phase stainless steel has excellent corrosion resistance and especially outstanding resistance to pitting performance.
Two phase stainless steel, analyzes its chemical property known: two phase stainless steel since the U.S. is born, has developed into the third generation from the forties in 20th century.Its principal feature is that yield strength can reach 400-550MPa, is 2 times of common stainless steel, therefore can economizes on material, reduces device fabrication cost.In anticorrosive, particularly media environment is relatively more severe (as seawater, chloride ion content is higher (certainly, also comprise the desulfurization fume pipeline being adapted to relate in the utility model embodiment)) condition under, the anti-spot corrosion of two phase stainless steel, crevice corrosion, stress corrosion and Corrosion Fatigue Properties are obviously better than common austenitic stainless steel, can match in excellence or beauty with high alloyed austenitic body stainless steel.
In concrete structure, the described total head pressure pipe in described monomer flow gauge and described static pressure pressure pipe are the two phase stainless steel pipe fitting containing molybdenum.
It should be noted that, containing molybdenum two phase stainless steel, there is under low stress the more outstanding good stress corrosion performance of resistance to chloride.Easily stress corrosion fracture is there is in Neutral Chloride compound solution in general 18-8 type austenitic stainless steel more than 60 DEG C, in trace chloride and sulfuretted hydrogen industrial media, all there is the tendency producing stress corrosion fracture with the equipment such as heat exchanger, evaporator that this kind of stainless steel manufactures, and two phase stainless steel there is good resistivity.
In more preferred technical scheme, the described total head pressure pipe in described monomer flow gauge and described static pressure pressure pipe are UNS S32304 two phase stainless steel pipe fitting.
2304 stainless steels (the Chinese trade mark: 00Cr23Ni4N) are low-alloyed two phase stainless steels of Sweden's exploitation, its solid solution temperature is about 1000 DEG C, tissue has 40%-50% ferrite and 50%-60% austenite, there is the common feature of two phase stainless steel, be, as one, there is high strength and inexpensive characteristic, 304L and 316L can be replaced to commonly use austenitic stainless steel and the steel grade developed.It has been confirmed to can be used for the pipeline of boiler and pressure vessel, chemical plant and refinery by U.S.'s IMECHE Instiution of Mechanical Engineers (ASME), many countries inclusive criteria.Unite States Standard (USS) is UNS S32304, and the commercial grades of Sweden is SAF 2304.
The chemical composition of UNS S32304 two phase stainless steel pipe fitting: UNS 2304 trade mark C≤0.030, Si≤1.0, Mn≤2.5, S≤0.030, P≤0.040, Cr:21.5-24.5, Ni:3.0-5.5, Mo:0.05-0.6, N:0.05-0.20, Cu:0.05-0.6;
The corrosion resisting property of UNS S32304 two phase stainless steel pipe fitting: the PRE value of UNS S32304 two phase stainless steel is 25, suitable with the stainless numerical value of 316L.We are under 300mV current potential, during the relation of the critical pitting temperature (CPT) of testing several steel in NaCl solution with chloride ion content, find that the CPT value of UNS S32304 two phase stainless steel is higher than 304L, and 316L are suitable.The intergranular corrosion resistance performance of UNS S32304 dual phase steel is good in addition.UNS S32304 dual phase steel has good corrosion resistance in nitric acid, can match in excellence or beauty with 304L.
Below the concrete structure of the anti-corrosion type self-cleaning flow measurement device that the utility model embodiment provides is done and describes in detail:
Wherein, also differential pressure transmitter is comprised; Described flow of monomer in addition in described anti-corrosion type self-cleaning flow measurement device is counted multiple; And multiple monomer flow gauge 1 is uniformly distributed along the xsect A shape at flue place; Described flow of monomer counts single-point type Pitot tube flowmeter.
The pressure guiding pipe of the total head pressure pipe of each described monomer flow gauge is all communicated with a total pressure guiding pipe of total head, and the pressure guiding pipe of the static pressure pressure pipe of each described monomer flow gauge is all communicated with a total pressure guiding pipe of static pressure; And the total pressure guiding pipe of described total head is communicated with the malleation mouth of pipe of described differential pressure transmitter, the total pressure guiding pipe of described static pressure is communicated with the negative pressure mouth of pipe of described differential pressure transmitter.(separately it should be noted that, above-mentioned differential pressure transmitter is not the claimed structure of the anti-corrosion type self-cleaning flow measurement device of the utility model embodiment, and it belongs to known technology, repeats no more this)
Preferably, as a kind of embodiment, the shape of cross section at described flue place is rectangle; And multiple monomer flow gauge along on the xsect of flue place rectangle in matrix form setting spaced apart.
Preferably, as a kind of embodiment, the cross sectional dimensions of the rectangle at described flue place is 4000X5000mm
2.
Preferably, as a kind of embodiment, multiple flow of monomer counts 16, and multiple monomer flow gauge is along the array format setting spaced apart in 4X4 on the xsect of flue place rectangle.
Analysis said structure is known: above-mentioned multiple monomer flow gauge 1 is uniformly distributed along the shape of cross section at flue A place, and the shape namely adapted with the xsect at flue place is laid in even; The gas at multiple diverse location places of integrated flue gas pipeline place xsect is measured by multiple monomer flow gauge, then the pressure guiding pipe of the total head pressure pipe 2 of each monomer flow gauge 1 is all communicated with a total pressure guiding pipe of total head 3 (namely all guiding the total pressure guiding pipe of total head into), and the pressure guiding pipe of the static pressure pressure pipe 4 of each described monomer flow gauge 1 is all communicated with a total pressure guiding pipe of static pressure; The total pressure guiding pipe of total head 3, the total pressure guiding pipe of static pressure are respectively by overall " total pressure " and " static pressure " of collection and by differential pressure transmitter enforcement measurement.Obviously differential pressure transmitter its have collected the gaseous tension of flue place xsect diverse location, because the gaseous tension at xsect diverse location place, flue place is different, therefore the anti-corrosion type self-cleaning flow measurement device that provides of the utility model, it combines whole flue place cross-sectional gas pressure just, and obviously its measurement result also reflects gas flow and the flow velocity at this place more comprehensively, fifty-fifty.
The pressure guiding pipe of the total head pressure pipe of traditional meter is communicated with the malleation mouth of pipe of described differential pressure transmitter, the pressure guiding pipe of static pressure pressure pipe is communicated with the negative pressure mouth of pipe of described differential pressure transmitter, implement the gas pressure measurement of single position, its measurement result is only the gas flow of single position obviously, can not represent the real gas flow in this place; This is because skewness that is solid in flue, two-phase mixtures height dusty gas, fluid form is chaotic; Simultaneously because pipe bent position is more in flue, therefore traditional monomer flow flowmeter measurement result is often more unilateral, inaccurate.But obviously, the anti-corrosion type self-cleaning flow measurement device that the utility model embodiment provides, the xsect utilizing multiple monomer flow gauge to be evenly distributed on flue place just implements multiple spot air measuring, and finally obtains the measurement result of comparatively comprehensively and really and accurately gas flow, flow velocity.
In concrete scheme, the anti-corrosion type self-cleaning flow measurement device that the utility model embodiment provides, evenly distributed mode and the topological shape of multiple monomer flow gauge are all determined with the place xsect of flue.Because in the utility model embodiment, the shape of cross section at desulfurization fume pipeline place is rectangle; Then in this concrete scheme, multiple monomer flow gauge along on the xsect of flue place rectangle in matrix form setting spaced apart.
In more specifically scheme, the way adopted adopts matrix form to measure on wind trunk cross section, namely anti-corrosion type self-cleaning flow measurement device is arranged on flue, in its probe Inserting Tube, when there being air current flow in pipe (direction of wind direction pointed by F arrow), windward side is by gas shock, the kinetic energy of air-flow converts pressure energy to herein, thus head-on overpressure is higher, its pressure is called " total head ", leeward side is not owing to being subject to air-flow punching press, pressure in its pipe is the static pressure in airduct, its pressure is called " static pressure ", the difference of total head and static pressure is called differential pressure, its size is relevant with wind speed (amount) in pipe, wind speed (amount) is larger, differential pressure is larger, wind speed (amount) is little, and differential pressure is also little, therefore, only measures the size of differential pressure, then finds out the corresponding relation of differential pressure and wind speed (amount), just correctly can measure wind speed and air quantity (i.e. gas flow) in pipe.As shown in Figure 2, the pressure guiding pipe at total head pressure pipe 2 top and the total head pressure tappings 21 of bottom is clearly illustrated; And the pressure guiding pipe at static pressure pressure pipe 4 top and the static pressure tapping 41 of bottom, the schematic diagram (above-mentioned schematic diagram, with monomer flow gauge principle of the prior art, repeats no more about meter principle of the prior art and technology this) of its foundation.
According to above-mentioned measuring principle, according to the size of each measurement sectional dimension, the factors such as straight length length determine that measurement is counted, many monomer flow gauge uniform cross sections are organically fitted together, malleation side is connected with malleation side, suction side is connected with suction side, just, suction side respectively draws a total pressure guiding pipe, respectively with differential pressure transmitter just, negative terminal is connected, record the average velocity in cross section, (namely actual connected mode with structure is: the pressure guiding pipe of the total head pressure pipe of each described monomer flow gauge is all communicated with a total pressure guiding pipe of total head finally to measure air quantity, the pressure guiding pipe of the static pressure pressure pipe of each described monomer flow gauge is all communicated with a total pressure guiding pipe of static pressure, and the total pressure guiding pipe of described total head is communicated with the malleation mouth of pipe of described differential pressure transmitter, the total pressure guiding pipe of described static pressure is communicated with the negative pressure mouth of pipe of described differential pressure transmitter).
Preferably, as a kind of embodiment, the quantity of above-mentioned monomer flow gauge can be any amount (its concrete quantity does not limit); Just set forth one of them preferred embodiment below namely: multiple flow of monomer counts 16, and multiple monomer flow gauge is along the array format setting spaced apart in 4X4 on the xsect of flue place rectangle.The cross sectional dimensions of the rectangle at described flue place is 4000X5000mm
2.
Such as: for the apparatus for measuring air quantity of a certain wind trunk, flue gas duct cross-section is of a size of 4000X5000mm
2(flue thickness is 4mm simultaneously), because air channel is large, straight length is short, the easy skewness of cross section wind speed.In order to ensure Measurement accuracy air quantity, intend at 4000X5000mm
2duct cross-section on arrange 16 air measuring points by matrix form measuring principle, in air channel, the malleation side of 16 air measuring probes and malleation side are interconnected the total pressure guiding pipe of total head, suction side and suction side and are interconnected the total pressure guiding pipe of static pressure, then lead to differential pressure transmitter respectively.Its uniform cross section arranges that air measuring point is as figure below (matrix form measurement point arranges schematic diagram, and in Fig. 3, " 0 " i.e. each circle represents a monomer flow gauge (i.e. measurement point)); In addition, specific product structural drawing is following (can see Fig. 4, in Fig. 4 anti-corrosion type self-cleaning flow measurement device structure in just include 16 monomer flow gauge 1 of setting, and lead up to the total pressure guiding pipe 3 of total head, the total pressure guiding pipe of static pressure of separately leading up to is drawn and is gone).Due to the plan view that Fig. 4 is anti-corrosion type self-cleaning flow measurement device, the total head pressure guiding pipe of the total pressure guiding pipe 3 of the total head in front and branch therefore can only be illustrated; It is not shown that the total pressure guiding pipe of static pressure is positioned at opposite side; The position (i.e. black dot position) that in Fig. 4, C illustrates in addition is the position that two automatically cleaning pendulum rods 6 are hinged.
It should be noted that, the quantity of above-mentioned monomer flow gauge is not specifically limited obviously; Multiple flow of monomer is counted 12 (or 25 etc.), and multiple monomer flow gauge carries out array arrangement (or array format of the 5X5 of correspondence) along the array format that the xsect of flue place rectangle also can enter 4X3.
Preferably, as a kind of embodiment, described flow of monomer counts single-point type Pitot tube flowmeter.
It should be noted that, Pitot tube flowmeter is the differential pressure flowmeter adopting pitot tube principle extraction pipeline central fluid stream speed (total head-static pressure=dynamic pressure) to be converted into fluid volume flow and mass rate again.Probe is inserted pipeline center by Pitot tube flowmeter, pitot hole carrys out flow path direction to positive fluid, baroport removes flow path direction to positive fluid, the difference of stagnation pressure and static pressure is the actual measurement differential pressure of pipeline center, simulated the standard differential pressure of this point again by the wind-tunnel calibration curve of this probe, carry out the flow of Fluid Computation according to standard differential pressure.Also need to measure hydrodynamic pressure with pressure unit simultaneously, fluid temperature (F.T.) is measured with resistance and temperature, standard differential pressure signal, pressure signal, temperature signal is introduced the flow integrator of single-chip microcomputer formation simultaneously or is directly accessed DCS system, on the one hand the flow equation of probe is resolved, on the one hand pressure is carried out to flue gas again, temperature compensation, to ensure measuring accuracy, and go out differential pressure with numerical monitor, pressure, temperature, instantaneous delivery, integrated flux, heat, (Pitot tube flow counts known technology to the parameters such as speed, this the utility model embodiment is repeated no longer one by one).
The anti-corrosion type self-cleaning flow measurement device that the utility model embodiment provides, utilize automatically cleaning swaying rod structure, solve blockage problem, automatically cleaning rod has been installed in the vertical pipeline section of pressure tappings, random swing is done under the impact of this rod air-flow in pipe, ensure that pressure tappings free from dust is gathered, play the effect of automatically cleaning ash.Adopt two phase stainless steel pipe fitting by structural members such as the total head pressure pipe in monomer flow gauge and static pressure pressure pipes, solve the problem of corrosive gas corrosion measuring device.Also utilize by matrix multimetering principle arrangement measuring point on duct cross-section simultaneously, measure accurately, solve the problem of measuring accuracy.
In sum, the anti-corrosion type self-cleaning flow measurement device that the utility model embodiment provides is compared with former measurement mechanism, has anti-clogging and anticorrosive, measuring accuracy high-technology advantage.
Last it is noted that above each embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to foregoing embodiments, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of each embodiment technical scheme of the utility model.
Claims (9)
1. an anti-corrosion type self-cleaning flow measurement device, is characterized in that,
Comprise monomer flow gauge; Automatically cleaning pendulum rod is provided with in total head pressure pipe in described monomer flow gauge and static pressure pressure pipe; The described outside dimension of automatically cleaning pendulum rod and the bore size of described total head pressure pipe and described static pressure pressure pipe adapt;
And described total head pressure pipe in described monomer flow gauge and described static pressure pressure pipe are two phase stainless steel pipe fitting.
2. anti-corrosion type self-cleaning flow measurement device according to claim 1, is characterized in that,
Described flow of monomer counts single-point type Pitot tube flowmeter.
3. anti-corrosion type self-cleaning flow measurement device according to claim 1, is characterized in that,
The top being positioned at one end of the described automatically cleaning pendulum rod of described total head pressure pipe inside and described total head pressure pipe is hinged, and the other end stretches out the total head pressure tappings of described total head pressure pipe.
4. anti-corrosion type self-cleaning flow measurement device according to claim 3, is characterized in that,
The top being positioned at one end of the described automatically cleaning pendulum rod of described static pressure pressure pipe inside and described static pressure pressure pipe is hinged, and the other end stretches out the static pressure tapping of described static pressure pressure pipe.
5. anti-corrosion type self-cleaning flow measurement device according to claim 1, is characterized in that, comprise differential pressure variator,
Described flow of monomer in described anti-corrosion type self-cleaning flow measurement device is counted multiple; And multiple monomer flow gauge is uniformly distributed along the shape of cross section at flue place;
The pressure guiding pipe of the total head pressure pipe of each described monomer flow gauge is all communicated with a total pressure guiding pipe of total head, and the pressure guiding pipe of the static pressure pressure pipe of each described monomer flow gauge is all communicated with a total pressure guiding pipe of static pressure; And the total pressure guiding pipe of described total head is communicated with the malleation mouth of pipe of described differential pressure variator, the total pressure guiding pipe of described static pressure is communicated with the negative pressure mouth of pipe of described differential pressure transmitter.
6. anti-corrosion type self-cleaning flow measurement device according to claim 5, is characterized in that,
The shape of cross section at described flue place is rectangle; And multiple monomer flow gauge along on the xsect of flue place rectangle in matrix form setting spaced apart.
7. anti-corrosion type self-cleaning flow measurement device according to claim 6, is characterized in that,
The cross sectional dimensions of the rectangle at described flue place is 4000X5000mm
2.
8. anti-corrosion type self-cleaning flow measurement device according to claim 7, is characterized in that,
Multiple flow of monomer counts 16, and multiple monomer flow gauge is along the array format setting spaced apart in 4X4 on the xsect of flue place rectangle.
9. anti-corrosion type self-cleaning flow measurement device according to claim 1, is characterized in that,
Described total head pressure pipe in described monomer flow gauge and described static pressure pressure pipe are UNS S32304 two phase stainless steel pipe fitting.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420784290.9U CN204346513U (en) | 2014-12-11 | 2014-12-11 | A kind of anti-corrosion type self-cleaning flow measurement device |
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| CN201420784290.9U CN204346513U (en) | 2014-12-11 | 2014-12-11 | A kind of anti-corrosion type self-cleaning flow measurement device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953855A (en) * | 2016-06-22 | 2016-09-21 | 武金玉 | Anti-blockage differential pressure flowmeter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953855A (en) * | 2016-06-22 | 2016-09-21 | 武金玉 | Anti-blockage differential pressure flowmeter |
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Owner name: NANJING EASE ENVIRONMENT SUPPLY CO., LTD. Free format text: FORMER OWNER: TIAN BIYONG Effective date: 20150724 |
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Effective date of registration: 20150724 Address after: 211200 environmental protection industrial park, Lishui Economic Development Zone, Nanjing, Jiangsu Patentee after: The Nanjing supporting company limited of the color environmental engineering of benefit Address before: Mount Lu Road, Jianye District of Nanjing City, Jiangsu province 210000 Ka International City No. 158 4-403 Patentee before: Tian Biyong |
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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 |