CN202066533U - Online fan flow detection device of uniform celerity tube - Google Patents
Online fan flow detection device of uniform celerity tube Download PDFInfo
- Publication number
- CN202066533U CN202066533U CN2010206472643U CN201020647264U CN202066533U CN 202066533 U CN202066533 U CN 202066533U CN 2010206472643 U CN2010206472643 U CN 2010206472643U CN 201020647264 U CN201020647264 U CN 201020647264U CN 202066533 U CN202066533 U CN 202066533U
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Abstract
The utility model relates to fan flow detection, in particular to a practical online fan flow detection device of a uniform celerity tube. The device comprises an integral three-valve unit, upper and lower supporting plates, a compression flange, left and right driving screws, an adjusting nut, a fixed joint, a fixed joint sealing member, a ball valve, a short connecting tube, a mounting base and an elliptic sensor which are sequentially connected with one another. By adoption of the online detection device, the purpose of the offline cleaning without shutdown can be achieved, thereby meeting the requirement of the measuring precision under the occasion of conveying a dust-containing, high-wetting, high-temperature and viscous gas medium.
Description
Technical field
The utility model relates to compressor flow and detects, and relates in particular to a kind of even speed tube compressor flow on-line measuring device.
Background technology
Even speed tube compressor flow online measuring technique is that a kind of differential pressure principle, plug-in type working method used obtained the method that gas entrained kinetic energy in flow process calculates volumetric flow of gas and mass rate.When the fluid that is full of pipeline was flowed through the test rod (being bourdon's tube) of mean velocity tube flowmeter, the pitot hole that test rod heads on sensed the total head mean value of fluid, and the baroport of test rod effluent face senses the static pressure mean value of fluid.According to the definite relational expression between the difference of total head and static pressure mean value and the fluid flow that flows through, and mix differential pressure transmitter and other annex, can show the parameters such as instantaneous delivery of gas in real time, as the aeroperformance of setting up blower fan and efficiency CALCULATION OF PARAMETERS foundation.
For mean velocity tube flowmeter, the measuring accuracy of flowmeter depends on the perceived accuracy of test rod pitot hole and baroport to a great extent; The dedusting fan system pipeline of metallurgy industry all between one meter to several meters, adopts the superiority of even speed tube more outstanding simultaneously.But,, will have influence on the reliability of on-line measurement data if the perception hole is very dirty or stop up when serious.And in the blower fan system of metallurgy industry; in the gas medium because the influence of factors such as flue dust, humidity, high temperature and viscosity; the on-line measurement condition is more abominable; the flowmeter gaging hole is easy to fouling and causes obstruction; even more serious is to contain compositions such as inflammable, explosive in some blower fan system, like this in the process of dismounting and cleaning test rod; must brought offline clean, in actual mechanical process, can bring very big inconvenience.Much occasions adopt restriction devices (as: orifice plate, nozzle, Venturi tube etc.) to replace, but because the irrecoverable crushing of restriction device flowmeter accounts for 40～80% of signal stagnation pressure, and even speed tube only is 2～15%, energy loss-rate restriction device flowmeter is low.
Summary of the invention
The utility model is intended to address the above problem, and a kind of even speed tube compressor flow on-line measuring device is provided.The utility model is for convenience detach, the online detection of flow of blower fan system is not cleaned, is applicable to brought offline.
For addressing the above problem, the utility model is achieved in that
A kind of even speed tube compressor flow on-line measuring device, top are equipped with integrated three valve groups, ellipse is clung to total head that flow sensor records and static pressure insert in the differential pressure transmitter and handle and calculate.Described pick-up unit also comprises:
A ball valve, it is arranged between oval crust flow sensor and the protection tube, and it is installed in the fairlead of oval crust flow sensor, ellipse can be clung to the flow sensor test rod and extract cleaning when pipeline is worked;
Upper and lower back up pad, they are horizontally disposed with one on the other, they couple together by drive screw and setting nut, and upper backup pad is fixing with ellipse crust flow sensor test rod and the welding of integrated three valve group test rods respectively, and lower supporting plate and the welding of fixture splice outer ring are fixing;
A pair of drive screw; they are respectively in the both sides of protection tube and pass upper and lower support plate respectively; and respectively be provided with a nut in the both sides up and down of upper backup pad, the both sides up and down of lower supporting plate; the drive screw lower end is provided with a pair of dismounting nut; the nut and the drive screw of described upper backup pad top are welded to connect, and the nut and the lower supporting plate of lower supporting plate below are welded to connect.
Described even speed tube compressor flow on-line measuring device, described ball valve connects oval crust flow sensor by a mount pad.
Described even speed tube compressor flow on-line measuring device, described protection tube top is provided with fixture splice, and described oval crust flow sensor test rod is tightly connected by a supported flange and seal and fixture splice.
Described even speed tube compressor flow on-line measuring device, test rod sensor according to the elliptical section shape of air dynamic behaviour design, can reduce the error that test rod place fluid separation produces, coefficient of flow is more stable, loss is low, and performance is better than traditional column type cross section test rod flow instrument.
Described even speed tube compressor flow on-line measuring device is that two bars drive patterns, online installation and extract more flexible.
Described even speed tube compressor flow on-line measuring device adopts integrated three valve groups, has reduced field installation time, has improved operating efficiency.
Described even speed tube compressor flow on-line measuring device can be reused, and realizes not shutting down repeatedly and cleans, and saves operating cost.
Description of drawings
Further specify embodiment of the present utility model below in conjunction with accompanying drawing
Fig. 1 is the utility model synoptic diagram.
Embodiment
As shown in Figure 1: setting nut 9 and drive screw 7, setting nut 12 and lower supporting plate 3 are welded into as a whole respectively, can not dismantle.When product normally used, promptly setting nut 9,10,11 was near upper and lower support plate 2,3, was used for spacingly, made the sensing station skew with pressure or the external pressure that prevents pipe interior, caused measuring inaccurate.
In use, follow these steps to sensor extracted and purge or overhaul:
One, sensor is extracted operation steps
At first with a pair of setting nut 10 on the drive screw 7,8 to the about 5mm of lower slider, remove spacing;
⑵ be rotated counterclockwise the setting nut 9 on the drive screw 7,8 then, runs into upper backup pad 2 to setting nut 10, makes 2 of setting nut 9 and upper backup pads gapped, can be by setting nut 9 normal loosening drive screws 7,8;
⑶ setting nut opposite side 27mm, the suggestion tubular key of 27mm.
⑷ slidable adjustment nut 11 is got rid of tightly its setting nut 10, makes it promote to move outside upper support 2 plates and the whole sensor in continuing loosening screw rod process;
⑸ continue to be rotated counterclockwise setting nut 9, setting nut 11 or setting nut 14, extracts sensor, stops when the lower limit mark line exposes the supported flange end face.
Attention:
1,2 drive screws 7 and 8 operation simultaneously as far as possible in withdrawal process, or drive screw 7 once, drive screw 8 once can not normally be withdrawed from drive screw is stuck in case nut withstands back up pad.
2, because of seal 6 is arranged in the fixture splice 5, pressured tight flange 4 seal sensors 18 are so sensor 18 can not be extracted supported flange 4 out.
⑹ close ball valve 15, prevents to leak;
⑺ unclamp the coupling bolt 20 of protection tube 19 and ball valve 15, and can pull down whole flowmeter this moment.
⑻ when purge sensor 18, must sensor 18 be stretched out protection tube 19 according to following inserting step (3) and (4), purging finishes contracted sensor 18 to protection tube 19 by above-mentioned steps before installing again.
Two, sensor inserts operation steps
⑴ at first connect the lower flange of protection tube 19 and the flange of ball valve 15, in case leak behind the stopping valve;
⑵ open ball valve 15 fully;
⑶ loosening downwards setting nut 10,11 about 10mm make itself and 2 of upper backup pads gapped, and drive screw 7 and 8 can normally be tightened, and promotion upper backup pad 2 moves down;
⑷ turn clockwise then setting nut 9 or setting nut 13 push sensor 18, stop when sensor 18 is run into duct bottom.
Claims (3)
1. even speed tube compressor flow on-line measuring device, it comprises an oval crust flow sensor, the differential pressure transmitter that inserts and handle and calculate with the total head that this sensor is recorded and static pressure, it is characterized in that, described uniform speed tube's blower fan top is equipped with integrated three valve groups, and described pick-up unit also comprises:
A ball valve, it is arranged between oval crust sensor and the protection tube, and it is installed in the fairlead of oval crust sensor;
Upper and lower back up pad, they are horizontally disposed with one on the other, they couple together by drive screw and setting nut, and upper backup pad is fixing with ellipse crust sensor bar and the welding of integrated three valve group test rods respectively, and lower supporting plate and the welding of fixture splice outer ring are fixing;
A pair of drive screw; they are respectively in the both sides of protection tube and pass upper and lower support plate respectively; and respectively be provided with a nut in the both sides up and down of upper backup pad, the both sides up and down of lower supporting plate; the drive screw lower end is provided with a pair of dismounting nut; the nut and the drive screw of described upper backup pad top are welded to connect, and the nut and the lower supporting plate of lower supporting plate below are welded to connect.
2. even speed tube compressor flow on-line measuring device according to claim 1 is characterized in that, described ball valve connects oval crust sensor by a mount pad.
3. even speed tube compressor flow on-line measuring device according to claim 1 is characterized in that, a described protection tube top is provided with fixture splice, and described oval crust sensor bar is tightly connected by a supported flange and seal and fixture splice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206472643U CN202066533U (en) | 2010-12-08 | 2010-12-08 | Online fan flow detection device of uniform celerity tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206472643U CN202066533U (en) | 2010-12-08 | 2010-12-08 | Online fan flow detection device of uniform celerity tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202066533U true CN202066533U (en) | 2011-12-07 |
Family
ID=45060394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206472643U Expired - Fee Related CN202066533U (en) | 2010-12-08 | 2010-12-08 | Online fan flow detection device of uniform celerity tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202066533U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017835A (en) * | 2012-11-26 | 2013-04-03 | 中国原子能科学研究院 | Parallel narrow-slit rectangular multi-flow-passage flow distribution measuring instrument |
| CN115060869A (en) * | 2022-07-11 | 2022-09-16 | 厦门市吉龙德环境工程有限公司 | Sensor device, calibration system, and calibration method |
-
2010
- 2010-12-08 CN CN2010206472643U patent/CN202066533U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017835A (en) * | 2012-11-26 | 2013-04-03 | 中国原子能科学研究院 | Parallel narrow-slit rectangular multi-flow-passage flow distribution measuring instrument |
| CN115060869A (en) * | 2022-07-11 | 2022-09-16 | 厦门市吉龙德环境工程有限公司 | Sensor device, calibration system, and calibration method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20141208 |
|
| EXPY | Termination of patent right or utility model |