CN206469920U - A kind of distinguished and admirable measuring device - Google Patents

A kind of distinguished and admirable measuring device Download PDF

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Publication number
CN206469920U
CN206469920U CN201720199743.5U CN201720199743U CN206469920U CN 206469920 U CN206469920 U CN 206469920U CN 201720199743 U CN201720199743 U CN 201720199743U CN 206469920 U CN206469920 U CN 206469920U
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China
Prior art keywords
pressure
low
voltage tube
distinguished
measuring device
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CN201720199743.5U
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Chinese (zh)
Inventor
黄宁
胡广红
陈小忠
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Jiangxi Suolide Measuring Instrument Co Ltd
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Jiangxi Suolide Measuring Instrument Co Ltd
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Abstract

The utility model is related to field of measuring technique, especially a kind of distinguished and admirable measuring device, including the multiple spot average rate double throat diameter flowmeter being fixed on pipeline, multiple spot average rate double throat diameter flowmeter includes high pressure pressure end and low pressure pressure end, also include differential pressure transmitter, high-voltage tube, low-voltage tube, high pressure anti-blowpipe and low-pressure reversal blower pipe, the high pressure pressure end is connected by high-voltage tube with the high-pressure side of differential pressure transmitter, the low pressure pressure end is connected by low-voltage tube with the low-pressure end of differential pressure transmitter, stop valve is respectively equipped with the high-voltage tube and low-voltage tube, back-flushing valve is respectively equipped with the high pressure anti-blowpipe and low-pressure reversal blower pipe, high pressure anti-blowpipe and low-pressure reversal blower pipe have been connected respectively on the high-voltage tube and low-voltage tube, the high pressure anti-blowpipe and low-pressure reversal blower pipe are connected to the lower section of stop valve, blowback is carried out by the gas circuit periodically to multiple spot average rate double throat diameter flowmeter, prevent stopping state, it ensure that the measurement accuracy of multiple spot average rate double throat diameter flowmeter.

Description

A kind of distinguished and admirable measuring device
Technical field
The utility model is related to field of measuring technique, especially a kind of distinguished and admirable measuring device.
Background technology
Multiple spot average rate double throat diameter flow apparatus be developed on the basis of inserted double throttle flowmeter and A kind of new product of flow measurement.The product utilization big signal of many larynx run-off devices, the characteristics of anti-blocking performance is superior, with reference to The flow measurement technology of bar class flowmeter multiple spot average rate, multiple profiles is designed as the double throat diameter flow apparatus group of bullet shape It is combined, then respective high and low pressure pressure room is serially connected respectively, differential pressure signal is finally drawn.It can be widely used for each Kind of air measuring occasion, be particularly suitable for thermal power plant once, secondary air flow and the not enough coal pulverizer of straight length is installed The measurement of entrance air quantity.
Patent No. ZL2006201648900 discloses a kind of plug-in type multiple spot average rate double throat diameter flow apparatus, although solution The problem that big-and-middle-sized pipeline flow of having determined is measured, it is ensured that the less pressure loss, but this device is when the dust in the air channel of measurement When larger, the pressure gas circuit of multiple spot average rate double throat diameter flowmeter is still easy to stopping state occur, so as to cause measurement inaccurate Really.
Utility model content
The technical problems to be solved in the utility model is:In order to solve the pressure of existing multiple spot average rate double throat diameter flowmeter Gas circuit is easy to stopping state problem occur when being measured in the larger environment of dust, the utility model provides a kind of wind flow Measurement apparatus, by setting high pressure anti-blowpipe and low-pressure reversal blower pipe, periodically the gas circuit to multiple spot average rate double throat diameter flowmeter is carried out Blowback, it is therefore prevented that stopping state, so as to effectively ensure the accurate of in the case of big dust multiple spot average rate double throat diameter flowmeter Property.
The utility model solves the technical scheme that its technical problem used:
A kind of distinguished and admirable measuring device, including the multiple spot average rate double throat diameter flowmeter being fixed on pipeline, multiple spot average rate are double Larynx runoff gauge includes high pressure pressure end and low pressure pressure end, in addition to differential pressure transmitter, high-voltage tube, low-voltage tube, high pressure blowback Pipe and low-pressure reversal blower pipe, the high pressure pressure end are connected by high-voltage tube with the high-pressure side of differential pressure transmitter, the low pressure pressure End is connected by low-voltage tube with the low-pressure end of differential pressure transmitter, and stop valve is respectively equipped with the high-voltage tube and low-voltage tube, described It is respectively equipped with high pressure anti-blowpipe and low-pressure reversal blower pipe on back-flushing valve, the high-voltage tube and low-voltage tube and has been connected respectively high pressure Anti-blowpipe and low-pressure reversal blower pipe, the high pressure anti-blowpipe and low-pressure reversal blower pipe are connected to the lower section of stop valve.
The utility model provides a kind of distinguished and admirable measuring device, and the multiple spot average rate double throat diameter flowmeter also includes sealing Ring flange on pipeline and double larynxs take gas equipment, and described pair of larynx takes gas equipment to be fixedly connected on the bottom of ring flange, the height Pressure pressure end and low pressure pressure end are fixedly connected on the top of ring flange, and high pressure pressure end and low pressure pressure end take gas with double larynxs Equipment is connected, and is fixed by ring flange, it is ensured that multiple spot average rate double throat diameter flowmeter, double larynxs take the axis direction of gas equipment with The axis direction for measuring pipeline is parallel, so as to ensure the degree of accuracy of measurement.
The utility model provides a kind of distinguished and admirable measuring device, and the ring flange is provided with takes gas to set for observing double larynxs Safety glass is provided with standby observation panel, the observation panel, the safety glass is connected with flangeseal, can be directly perceived at any time The double larynxs of observation take the state of gas equipment, if the problems such as wearing and tearing.
The utility model provides a kind of distinguished and admirable measuring device, and the ring flange is the length of rectangle, wherein ring flange Side is parallel with the traffic direction of wind in pipeline, and pair larynxs take the axis side of gas equipment when facilitating the installation of multiple spot average rate double throat diameter flowmeter It is parallel to the axis direction with measuring pipeline, so as to ensure the degree of accuracy of measurement.
The utility model provides a kind of distinguished and admirable measuring device, and the observation panel is circular arc, it is ensured that maximum visual angle To observe.
The utility model provides a kind of distinguished and admirable measuring device, in addition to balance pipe, and the balance pipe is arranged on cut-off The top of valve, and the high-voltage tube is connected with low-voltage tube, balanced valve is set on the balance pipe, for ensureing high-voltage tube and low Detect whether differential pressure transmitter is accurate in the case of pressure pipe pressure balance.
The utility model provides a kind of distinguished and admirable measuring device, and the air inlet direction of the pipeline is provided with screen pack, Prevent larger object from causing the damage of multiple spot average rate double throat diameter flowmeter.
The beneficial effects of the utility model are:The utility model provides a kind of distinguished and admirable measuring device, effectively It ensure that the measurement accuracy of multiple spot average rate double throat diameter flowmeter so that multiple spot average rate double throat diameter flowmeter can be various severe Under conditions of carry out air quantity measurement, further expand detection range;By setting observation panel to enable maintainer very Intuitively observe multiple spot average rate double throat diameter flowmeter situation in pipeline, it is not necessary to dismantled, greatly facilitate maintenance.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is a kind of structural representation of distinguished and admirable measuring device;
Fig. 2 is the structural representation of ring flange.
Embodiment
The utility model is described in further detail presently in connection with accompanying drawing.These accompanying drawings are simplified schematic diagram, Only illustrate basic structure of the present utility model in a schematic way, therefore it only shows the composition relevant with the utility model.
As shown in figure 1, a kind of distinguished and admirable measuring device, including the multiple spot average rate double throat diameter flowmeter being fixed on pipeline 1 2, wherein F direction is the flow direction of the apoplexy of pipeline 1, and multiple spot average rate double throat diameter flowmeter 2 includes high pressure pressure end 21 and low pressure takes Pressure side 22, in addition to differential pressure transmitter 3, high-voltage tube 4, low-voltage tube 5, high pressure anti-blowpipe 6 and low-pressure reversal blower pipe 7, high pressure pressure end 21 are connected by high-voltage tube 4 with the high-pressure side of differential pressure transmitter 3, and low pressure pressure end 22 passes through low-voltage tube 5 and differential pressure transmitter 3 Low-pressure end is connected, and is respectively equipped with stop valve 9, high pressure anti-blowpipe 6 and low-pressure reversal blower pipe 7 and is set respectively on high-voltage tube 4 and low-voltage tube 5 Have and be connected respectively high pressure anti-blowpipe 6 and low-pressure reversal blower pipe 7, high pressure anti-blowpipe on back-flushing valve 8, high-voltage tube 4 and low-voltage tube 5 6 and low-pressure reversal blower pipe 7 be connected to the lower section of stop valve 9.
In a kind of specific embodiment, multiple spot average rate double throat diameter flowmeter 2 also includes the ring flange 23 being sealed on pipeline 1 Gas equipment 24 is taken with double larynxs, double larynxs take gas equipment 24 to be fixedly connected on the bottom of ring flange 23, and high pressure pressure end 21 and low pressure take Pressure side 22 is fixedly connected on the top of ring flange 23, and high pressure pressure end 21 and low pressure pressure end 22 take gas equipment 24 to connect with double larynxs It is logical.
In a kind of specific embodiment, ring flange 23, which is provided with, to be used to observe the observation panel 25 that double larynxs take gas equipment 24, is seen Examine and safety glass is provided with mouth 25, safety glass is tightly connected with ring flange 23.
Preferably, ring flange 23 is rectangle, the wherein long side of ring flange 23 is parallel with the traffic direction of wind in pipeline 1
Preferably, observation panel 25 is circular arc.
In a kind of specific embodiment, in a kind of specific embodiment, in addition to balance pipe 10, balance pipe 10, which is arranged on, to be cut The only top of valve 9, and high-voltage tube 4 is connected with low-voltage tube 5, sets balanced valve 11 on balance pipe 10.
Preferably, the air inlet direction of pipeline 1 is provided with screen pack.
Measuring principle:According to velocity-area method flow measurement principle, pair that multiple profiles are designed according to bullet shape Larynx runoff measuring device, is combined by design attitude, is then installed on the meter that flow velocity (flow) is carried out in tested pipeline Amount.According to the form of resistance piece before and after line size size, throttling element and fluidised form in straight length and pipe can be installed when in use Distribution situation, installs one or more sets this measurement apparatus, and takes out defeated after their high and low pressure pressure guiding pipe is interconnected respectively Go out signal, so as to reach the average purpose of multiple spot differential pressure flow velocity, overcome due to resistance before and after installation straight length deficiency, throttling element The measurement error that flow distortion caused by the choked flow piece such as part and pipeline internal support is caused.
During installation, the installation site of multiple spot average rate double throat diameter flowmeter 2 directly affects its measurement result.Peace is selected on pipeline When filling plug-in type multiple spot average rate double throttle flowmeter, mount point position should be correctly selected according to requirements for pipes;Installation site It is determined that after, a slot is opened along axis direction in test point, slot is matched with ring flange 23, then by special rectangle Welding flange 23 is placed on pipeline slot, notices that the long side of ring flange is parallel with conduit axis during welding.
Blowing method is online:The pressure valve before differential pressure transmitter is first shut off, source of the gas is then connected outside blow down valve Pressure opens purging valve, opens compressed air and purged, after two blowings are finished, shut purging in 0.6~0.8MPa Valve, finally opens pressure valve by regulation.For purge cycles, it should formulate more reasonable according to the property and clean level of medium Ground purge cycles, to improve product reliability and service life., should in the upstream of measurement pipeline when measured medium cleanliness factor is poor Install effectively sundries cleaning device additional, prevent measurement part to be blocked.
Using it is above-mentioned according to desirable embodiment of the present utility model as enlightenment, pass through above-mentioned description, related work people Member can carry out various changes and amendments in the range of without departing from this utility model technological thought completely.This reality The content on specification is not limited to new technical scope, it is necessary to its technology is determined according to right Property scope.

Claims (6)

1. a kind of distinguished and admirable measuring device, including the multiple spot average rate double throat diameter flowmeter (2) being fixed on pipeline (1), multiple spot is equal Fast double throat diameter flowmeter (2) includes high pressure pressure end (21) and low pressure pressure end (22), it is characterised in that:Also include differential pressure transporting Device (3), high-voltage tube (4), low-voltage tube (5), high pressure anti-blowpipe (6) and low-pressure reversal blower pipe (7), the high pressure pressure end (21) pass through High-voltage tube (4) is connected with the high-pressure side of differential pressure transmitter (3), and the low pressure pressure end (22) is become by low-voltage tube (5) and differential pressure Send the low-pressure end of device (3) to connect, stop valve (9), the high pressure blowback are respectively equipped with the high-voltage tube (4) and low-voltage tube (5) It is respectively equipped with back-flushing valve (8), the high-voltage tube (4) and low-voltage tube (5) to correspond to respectively on pipe (6) and low-pressure reversal blower pipe (7) and connects High pressure anti-blowpipe (6) and low-pressure reversal blower pipe (7) are connected to, the high pressure anti-blowpipe (6) and low-pressure reversal blower pipe (7) are connected to stop valve (9) lower section.
2. a kind of distinguished and admirable measuring device as claimed in claim 1, it is characterised in that:The multiple spot average rate double throat diameter flowmeter (2) ring flange (23) and double larynxs for also including being sealed on pipeline (1) take gas equipment (24), and described pair of larynx takes gas equipment (24) solid Surely the bottom of ring flange (23) is connected to, the high pressure pressure end (21) and low pressure pressure end (22) are fixedly connected on ring flange (23) top, and high pressure pressure end (21) and low pressure pressure end (22) take gas equipment (24) to connect with double larynxs.
3. a kind of distinguished and admirable measuring device as claimed in claim 2, it is characterised in that:The ring flange (23), which is provided with, to be used for The double larynxs of observation take and safety glass are provided with the observation panel (25) of gas equipment (24), the observation panel (25), the safety glass with Ring flange (23) is tightly connected.
4. a kind of distinguished and admirable measuring device as claimed in claim 2 or claim 3, it is characterised in that:The ring flange (23) is rectangular The long side of shape, wherein ring flange (23) is parallel with the traffic direction of pipeline (1) interior wind.
5. a kind of distinguished and admirable measuring device as claimed in claim 1, it is characterised in that:Also include balance pipe (10), it is described flat Weighing apparatus pipe (10) is arranged on the top of stop valve (9), and the high-voltage tube (4) is connected with low-voltage tube (5), the balance pipe (10) Upper setting balanced valve (11).
6. a kind of distinguished and admirable measuring device as claimed in claim 1, it is characterised in that:The air inlet direction of the pipeline (1) It is provided with screen pack.
CN201720199743.5U 2017-03-03 2017-03-03 A kind of distinguished and admirable measuring device Active CN206469920U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720199743.5U CN206469920U (en) 2017-03-03 2017-03-03 A kind of distinguished and admirable measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720199743.5U CN206469920U (en) 2017-03-03 2017-03-03 A kind of distinguished and admirable measuring device

Publications (1)

Publication Number Publication Date
CN206469920U true CN206469920U (en) 2017-09-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720199743.5U Active CN206469920U (en) 2017-03-03 2017-03-03 A kind of distinguished and admirable measuring device

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113418569A (en) * 2021-06-18 2021-09-21 马鞍山钢铁股份有限公司 Cleaning device for venturi tube flow measurement pipeline and control method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113418569A (en) * 2021-06-18 2021-09-21 马鞍山钢铁股份有限公司 Cleaning device for venturi tube flow measurement pipeline and control method thereof

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