CN202033063U - Tower-type flow meter for online purging of circulation clearance of flow meter - Google Patents
Tower-type flow meter for online purging of circulation clearance of flow meter Download PDFInfo
- Publication number
- CN202033063U CN202033063U CN2011201360218U CN201120136021U CN202033063U CN 202033063 U CN202033063 U CN 202033063U CN 2011201360218 U CN2011201360218 U CN 2011201360218U CN 201120136021 U CN201120136021 U CN 201120136021U CN 202033063 U CN202033063 U CN 202033063U
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- CN
- China
- Prior art keywords
- purging
- measuring tube
- flow meter
- circulation clearance
- circulation
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a tower-type flow meter for online purging of a circulation clearance of the flow meter, which comprises a measuring tube. A throttling component is arranged in the measuring tube, the circulation clearance is arranged between the throttling component and the inner wall of the measuring tube, a purging ring is sleeved outside the measuring tube, an annular cavity is arranged between the measuring tube and the purging ring, the measuring tube is provided with a plurality of purging holes corresponding to the circulation clearance, and the purging ring is provided with at least one purging port communicated with the annular cavity. The purging port can be connected with a valve, and the valve can be connected with external purging gas (or liquid), is closed when the device is not used and is opened when needed for purging and then closed after purging. Therefore, the valve can be opened at any time for purging of the circulation clearance according to the dirtiness of fluid to be tested. By adopting the technical scheme, online regular purging of the circulation clearance can be achieved when the flow rate is low and the circulation clearance of the flow meter is narrow, and normal operation of the flow meter can be guaranteed. Moreover, the utility model has the advantages that the tower-type flow meter has a simple structure and is convenient to operate.
Description
Technical field
The utility model relates to a kind of instrument and meter of measuring the pipeline fluid flow, specifically a kind of turriform flowmeter that can online purge flow rate meter ebb interval.
Background technology
At present under the very low situation of rate of flow of fluid, in order to obtain reliable differential pressure value, the β value of turriform flowmeter (also claiming the V cone flow meter) can only be got very little even minimum value, the d value of throttling element is inevitable very big even reach maximal value thus, causes circulation gap between throttling element and the measuring tube very narrow even be in the narrowest state thus.Under this condition, the soil of carrying secretly in the fluid just causes measuring error to increase or failure in this accumulation easily.Serious meeting is stopped up whole circulation gap fully, thus the fault that causes whole measuring channel to stop up.This kind problem usually takes place in the flow measurement of low flow velocity, does not still have solution well at present, pulls down after only way can only stop and clears up.
Summary of the invention
The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art, provide a kind of simple in structure, easy to use, can guarantee the flowmeter operate as normal can online purge flow rate meter circulation gap the turriform flowmeter.
For achieving the above object, the utility model adopts following technical proposals:
The turriform flowmeter in a kind of online purge flow rate meter circulation gap, comprise measuring tube, be provided with throttling element in the described measuring tube, between throttling element and the measuring tube inwall circulation gap is arranged, be with one in the measuring tube outside and purge ring, be provided with annular housing between measuring tube and the purging ring, measuring tube is provided with some and the corresponding purge hole in circulation gap, purges to encircle to be provided with the purging mouth that at least one communicates with annular housing.
Described purging ring is arranged at the circulation gap opposite position of measuring tube outside and its inside.
Purging of the present utility model mouthful is gone up and can be connect valve, and this valve can external purge gas (or liquid), and valve is in closed condition at ordinary times, open when needing to purge, and closes after purging is finished.The utility model can be according to the degree of fouling of detected fluid, and Open valve purges the circulation gap at any time.
Owing to adopt technique scheme, when having solved low flow velocity operating mode, under the narrow situation in flowmeter circulation gap, can onlinely regularly carry out purge to the circulation gap, can guarantee the flowmeter operate as normal, and have advantages such as simple in structure, easy to operate.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 be among Fig. 1 A-A to cut-open view;
Wherein 1. measuring tubes 2. purge ring, 3. circulation gap, 4. throttling element, 5. purge hole, 6. purging mouth, 7. annular housing.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As shown in Figure 1, 2, the turriform flowmeter in a kind of online purge flow rate meter circulation gap, comprise measuring tube 1, be provided with throttling element 4 in the described measuring tube 1, circulation gap 3 is arranged between throttling element 4 and the measuring tube inwall, be with one in measuring tube 1 outside and purge ring 2, be provided with annular housing 7 between measuring tube 1 and the purging ring 2, measuring tube 1 is provided with some and circulation gap 3 corresponding purge holes 5, purges ring 2 and is provided with the purging mouth 6 that at least one communicates with annular housing 7.
Described purging ring 2 is arranged at circulation gap 3 opposite positions of measuring tube 1 outside and its inside.
Can connect valve on the purging of the present utility model mouthfuls 6, this valve can external purge gas (or liquid), and valve is in closed condition at ordinary times, open when needing to purge, and purges to close after finishing.The utility model can be according to the degree of fouling of detected fluid, and Open valve regularly purges circulation gap 3 at any time.
Claims (2)
1. the turriform flowmeter in an online purge flow rate meter circulation gap, comprise measuring tube, be provided with throttling element in the described measuring tube, between throttling element and the measuring tube inwall circulation gap is arranged, it is characterized in that: be with one in the measuring tube outside and purge ring, be provided with annular housing between measuring tube and the purging ring, measuring tube is provided with some and the corresponding purge hole in circulation gap, purges to encircle to be provided with the purging mouth that at least one communicates with annular housing.
2. the turriform flowmeter in online purge flow rate meter circulation according to claim 1 gap, it is characterized in that: described purging ring is arranged at the circulation gap opposite position of measuring tube outside and its inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201360218U CN202033063U (en) | 2011-05-03 | 2011-05-03 | Tower-type flow meter for online purging of circulation clearance of flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201360218U CN202033063U (en) | 2011-05-03 | 2011-05-03 | Tower-type flow meter for online purging of circulation clearance of flow meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202033063U true CN202033063U (en) | 2011-11-09 |
Family
ID=44895357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201360218U Expired - Lifetime CN202033063U (en) | 2011-05-03 | 2011-05-03 | Tower-type flow meter for online purging of circulation clearance of flow meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202033063U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105903729A (en) * | 2016-06-15 | 2016-08-31 | 武金玉 | Anti-blocking purging device |
-
2011
- 2011-05-03 CN CN2011201360218U patent/CN202033063U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105903729A (en) * | 2016-06-15 | 2016-08-31 | 武金玉 | Anti-blocking purging device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111109 |