CN201897488U - Double-pipeline cavity of fuel gas meter - Google Patents
Double-pipeline cavity of fuel gas meter Download PDFInfo
- Publication number
- CN201897488U CN201897488U CN2010206499576U CN201020649957U CN201897488U CN 201897488 U CN201897488 U CN 201897488U CN 2010206499576 U CN2010206499576 U CN 2010206499576U CN 201020649957 U CN201020649957 U CN 201020649957U CN 201897488 U CN201897488 U CN 201897488U
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- cavity
- flow
- fuel gas
- pipeline
- meter
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Abstract
The utility model discloses a double-pipeline cavity of a fuel gas meter, which comprises a cavity, wherein the upper end of the cavity is provided with a gas inlet, the lower end of the cavity is connected with a left cavity pipeline and a right cavity pipeline, and the middle of the cavity is provided with a separation plate for separating the left cavity pipeline from the right cavity pipeline. The double-pipeline cavity is provided with the two cavity pipelines, the fuel gas is uniformly divided into two paths by the separation plate after entering the cavity pipelines to respectively flow through the cavity pipelines, so the flow rate flowing through the single cavity pipeline is reduced, the flow speed of the fuel gas is reduced, and the fuel gas can smoothly and slowly flow through the cavities pipelines. Thereby, the flow speed can be more accurately measured, and the flow rate is obtained. For a fuel gas meter with a high flow rate, small pressure loss when the fuel gas flows through the cavity pipelines can be ensured, and the measurement precision is higher.
Description
Technical field
The utility model belongs to the gas meter, flow meter field, relates in particular to a kind of breather line of gas meter, flow meter.
Background technology
Because ultrasonic wave gas meter has accurate measurement, working stability, advantages such as noise is less are employed more and more widely now, can be referring to patent " electronic gas meter for mass and flow (publication number CN101126652A) " about the structure and the principle of work of ultrasonic wave gas meter.In the process of ultrasound wave metering gas flow, need to measure the flow velocity of combustion gas, flow in combustion gas is less, comparatively slowly stably the time, the flow velocity that ultrasonic sensor records is comparatively accurately to flow velocity, and when the flow of combustion gas bigger, flow velocity is faster the time, the flow velocity error that records is just bigger, thus for the less gas meter, flow meter of flow when improving its flow, the measuring accuracy that the improves ultrasonic wave gas meter outbalance that just seems.
Summary of the invention
The purpose of this utility model be to provide a kind of can be bigger in gas flow, flow velocity is faster the time, improves the pipeline cavity of gas meter, flow meter of the measuring accuracy of ultrasonic wave gas meter.
The technical solution of the utility model: a kind of twin flue cavity of gas meter, flow meter, comprise cavity, the cavity upper end is provided with air intake opening, and described cavity lower end is connected with left cavity, right cavity, and the centre of cavity is provided with demarcation strip left cavity and right cavity is separated.
As preferably, described demarcation strip top is provided with pointed fair water fin.
As preferably, all be provided with the dividing plate of some horizontal parallel in described left cavity and the right cavity.
Pipeline cavity of the present utility model is provided with left and right two cavitys by the lower end at cavity, be provided with demarcation strip between two cavitys, after combustion gas enters cavity by the air intake opening on the cavity, by demarcation strip combustion gas is divided into two-way, the two-way combustion gas is respectively down by left cavity and right cavity, after coming out from left and right cavity, combustion gas, flows out from meter connector at last through the inner chamber of the watchcase of gas meter, flow meter.In this process, be provided with ultrasonic sensor in the left and right cavity respectively and be used for the flow velocity of the combustion gas that measurement flow crosses, thereby outflow.Because the utility model is provided with two cavities, and combustion gas is separated plate after coming in and is divided into two-way two cavities of flowing through respectively uniformly, reduced flow thus by single cavity, reduce the flow velocity of combustion gas, enabled comparatively steadily to flow through slowly cavity, thereby can record flow velocity comparatively accurately, obtain flow, for the bigger gas meter, flow meter of flow, the pressure loss is less when can guarantee that it flows through cavity, and the precision of measurement is higher.The gas meter, flow meter that adopts single cavity is under its certain pressure loss condition of assurance, and its maximum flow can only arrive 6m
3/ h, and adopt two-chamber road maximum flow under the identical pressure loss can arrive 12m now
3/ h.
Description of drawings
Fig. 1 is the utility model cross-sectional schematic;
Fig. 2 is contained in cut-open view in the ultrasonic wave gas meter for the utility model;
Fig. 3 is the A-A cut-open view of Fig. 2.
Embodiment
As Fig. 1, a kind of twin flue cavity of gas meter, flow meter comprises cavity 1, and cavity 1 upper end is provided with air intake opening 6, and described cavity 1 lower end is connected with left cavity 2, right cavity 3, and the centre of cavity 1 is provided with demarcation strip 4 left cavity 2 and right cavity 3 are separated.Demarcation strip 4 is arranged on the below of air intake opening 6, and is fixed on the centre of cavity 1 inwall, and there is a pinnacle that is the pyramid setting demarcation strip 4 upper ends as fair water fin 11, can be divided into two-way toward dirty along fair water fin 11 after combustion gas is come in from air intake opening 6.
As Fig. 2,3, arrow among the figure is the flow direction of combustion gas, the pipeline cavity is contained in the ultrasonic wave gas meter, combustion gas enters the tracheae 8 of gas meter, flow meter from the meter connector 7 of gas meter, flow meter top one end, enter cavity 1 from the air intake opening 6 that communicates with tracheae 8 then, combustion gas from cavity 1 toward dirty the time, be separated plate 4 and be divided into two-way, the two-way combustion gas continues toward dirty, flow through from left cavity 2 and right cavity 3 respectively then, when left and right cavity flows through, the ultrasonic sensor that is arranged in the cavity records the flow velocity of combustion gas, thereby obtains the flow of combustion gas.Combustion gas is flowed out the inner chamber of back by the watchcase 9 of gas meter, flow meter from left and right sides cavity, and the meter connector from an other side flows out the gas appliance that enters into the user at last.
All be provided with the dividing plate 5 of some horizontal parallel in left side cavity 2 and the right cavity 3.Because the mobile resistance that be subjected to cavity inwall of gas in stream is slow near the gas flow rate of chamber wall so flowing velocity is inhomogeneous, and be fast near the gas flow rate of central authorities.And be a mean speed by ultrasound wave conversion by the flow velocity that formula calculates, unit cross-sectional area and flow velocity are multiplied each other can not reflect reality gas flow accurately simply.So in cavity, be provided with the dividing plate of multilayer horizontal parallel; The dividing plate of multilayer horizontal parallel will be divided into independently multilayer chamber in the cavity, when gas-flow is crossed cavity, the combustion gas stream is divided into the multilayer of horizontal parallel, pass through from the multilayer independent cavity respectively, make gas mobile in stream be subjected to identical relatively resistance, flowing velocity is even relatively, and then the flow velocity that obtains can reflect gas flow speed more exactly.
Claims (3)
1. the twin flue cavity of a gas meter, flow meter, comprise cavity (1), cavity (1) upper end is provided with air intake opening (6), it is characterized in that, described cavity (1) lower end is connected with left cavity (2), right cavity (3), and the centre of cavity (1) is provided with demarcation strip (4) left cavity (2) and right cavity (3) are separated.
2. the twin flue cavity of a kind of gas meter, flow meter according to claim 1 is characterized in that, described demarcation strip (4) top is provided with pointed fair water fin (11).
3. the twin flue cavity of a kind of gas meter, flow meter according to claim 1 and 2 is characterized in that, all is provided with the dividing plate (5) of some horizontal parallel in described left cavity (2) and the right cavity (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206499576U CN201897488U (en) | 2010-12-09 | 2010-12-09 | Double-pipeline cavity of fuel gas meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206499576U CN201897488U (en) | 2010-12-09 | 2010-12-09 | Double-pipeline cavity of fuel gas meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201897488U true CN201897488U (en) | 2011-07-13 |
Family
ID=44255394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206499576U Expired - Lifetime CN201897488U (en) | 2010-12-09 | 2010-12-09 | Double-pipeline cavity of fuel gas meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201897488U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105444830A (en) * | 2015-11-12 | 2016-03-30 | 重庆前卫克罗姆表业有限责任公司 | Ultrasonic flowmeter |
-
2010
- 2010-12-09 CN CN2010206499576U patent/CN201897488U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105444830A (en) * | 2015-11-12 | 2016-03-30 | 重庆前卫克罗姆表业有限责任公司 | Ultrasonic flowmeter |
| CN105444830B (en) * | 2015-11-12 | 2018-12-14 | 重庆前卫克罗姆表业有限责任公司 | Ultrasonic flowmeter |
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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: 20110713 |