CN2842382Y - Flush-dischange type impeller flow meter - Google Patents
Flush-dischange type impeller flow meter Download PDFInfo
- Publication number
- CN2842382Y CN2842382Y CN 200520103578 CN200520103578U CN2842382Y CN 2842382 Y CN2842382 Y CN 2842382Y CN 200520103578 CN200520103578 CN 200520103578 CN 200520103578 U CN200520103578 U CN 200520103578U CN 2842382 Y CN2842382 Y CN 2842382Y
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- CN
- China
- Prior art keywords
- impeller
- impeller cavity
- water
- oral siphon
- cavity
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- Expired - Fee Related
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Abstract
The utility model discloses a flush-discharge type impeller flow meter. An impeller cavity is formed by an impeller cavity casing; an impeller is sheathed on an impeller shaft and is arranged in the impeller cavity; the impeller is uniformly provided with vanes; a water inlet pipe is arranged at the upper stream of the impeller cavity, and a water outlet pipe is arranged at the down stream of the impeller cavity; the impeller cavity casing is a semi-circular casing with the diameter greater than that of the water inlet pipe, and is rabbet between the water inlet pipe and the water outlet pipe; the water inlet pipe and the water outlet pipe form a cavity with communicated water stream; the impeller shaft is transversally arranged in the impeller cavity; a gap is formed between the end edges of the vanes and the inner wall surface at the bottom of the impeller cavity to form a sewage discharge channel; a prearranged guider is arranged at the connection point of the water inlet pipe and the impeller cavity casing; a nozzle opening is formed between the prearranged guider and the water inlet pipe; a post-arranged fluid guider is arranged at the connection point of the water outlet pipe and the impeller cavity casing; a water sucking opening is formed between the post-arranged fluid guider and the water outlet pipe. The utility model has the characteristics of water flow impurity clogging prevention, small start-up flow rate, high measuring precision and small water flow resistance.
Description
Technical field
The utility model relates to the measuring instrument of a kind of building heat supplying, water supply, specifically, relates to a kind of flushing and discharging type propeller flowmeter.
Background technology
Calorimeter is the instrument of carrying out household measurement heat-supplying, and it enters user's hot water flow and supply water temperature and return water temperature by mensuration, calculates the heating load of supplying with hot user.Existing calorimeter is supplied water by the flow sensor of measuring hot water flow and measurement and two temperature sensors of return water temperature are formed, and calorimeter mainly contains mechanical type calorimeter, this two class of ultrasonic calorimeter.Though ultrasonic calorimeter is non-cpntact measurement and has the high advantage of measuring accuracy the measurement of hot water flow, because involving great expense of ultrasonic calorimeter is difficult to popularization and application.Though mechanical type calorimeter cost is low, be subject to the impurity effect of heat supply hot water, exist the defective that impurity stops up, this reliability and influence in serviceable life to the mechanical type calorimeter is very big.
Flowmeter in the mechanical type calorimeter is that the flow measurement principle of imitation water meter is made, and promptly is made up of impeller shaft, impeller, the blade that is connected on the impeller.Wherein impeller is to be fixed on the impeller shaft, when the current scour blade, rotates with regard to impeller and impeller shaft, and water flow is big more, and the moment of washing away blade is just big more, and the rotating speed of impeller is just high more.Just can determine flow by the rotating speed of gathering impeller by the mechanical type calorimeter.Flowmeter in the mechanical type calorimeter mainly is divided into single channel and multithread bundle two classes.By analyzing and experiment, find that the single channel flowmeter is better than multithread bundle flowmeter aspect anti-clogging.The impeller of single channel flowmeter is horizontally disposed, for the linearity that makes measurement improves, is provided with some grooves in the bottom of impeller, impacts blade on the impeller so that converge current as much as possible.So, when current when the single channel flowmeter, the impurity in the current just the effect deposit of gravity with stick in the flowmeter.In to the research of the flowmeter in the mechanical type calorimeter, China's utility model patent " a kind of civil heat meter flow sensor " (utility model patent number be 02275016.9) improves the flowmeter of calorimeter, proposed: " by reducing the length of impeller blade; the outer edge that makes blade is on the center line of current; in water inlet inside mozzle is housed, and the inner of mozzle is near the edge of blade.During work, current are concentrated and are impacted on the edge of blade by mozzle, reduce length of blade the non-resistance circulation area is increased ".Find that by theoretical analysis and experiment " a kind of civil heat meter flow sensor " exists following deficiency:
1, the startup flow of Ce Lianging is big; 2, measuring accuracy is not high under low discharge; 3, oblique mozzle is equipped with in water inlet inside, and because of its structure is comparatively complicated, manufacture difficulty is bigger; 4, the blade on the impeller, employing be plate blade, when water impact, resistance to flow is big; 5, when current leave impeller,, make the current at this place eddy current occur and form the flow dynamic dissipation because of no air deflector.
The utility model content
The utility model technical issues that need to address just are to overcome that flowmeter easily stops up, starts the defective that measuring accuracy is not high, resistance to flow is big under the large and small flow of flow in the existing machinery formula calorimeter, a kind of flushing and discharging type propeller flowmeter is provided, it can anti-clogging, has higher measurement characteristics again.
For addressing the above problem, the utility model adopts following technical scheme:
The utility model flushing and discharging type propeller flowmeter, comprise impeller shaft, impeller, blade, impeller cavity, the impeller cavity shell, oral siphon and rising pipe, form impeller cavity in the impeller cavity shell, described impeller set is contained in and is installed in the impeller cavity on the impeller shaft, blade evenly is installed on the impeller, oral siphon is installed in the upstream of impeller cavity, rising pipe is installed in the downstream of impeller cavity, described impeller cavity shell is the semicircular shell of diameter greater than the oral siphon diameter, interlocking is between oral siphon and rising pipe, form the cavity that current are communicated with oral siphon and rising pipe, described impeller shaft laterally is placed in the impeller cavity, there is the space at the end of blade edge of blade far from the bottom interior wall face of impeller cavity, forms the drain outlet, and oral siphon and impeller cavity shell junction are provided with preposition guides, form spout between preposition guides and the oral siphon, rising pipe and impeller cavity shell junction are provided with rearmounted air deflector, form the water sucking mouth between rearmounted air deflector and the rising pipe, impeller cavity and spout, the water sucking mouth is connected.
Preposition guides described in the utility model is made up of the internal face of a convex surface countervane and oral siphon, it is from the oral siphon central region, extend to spout always, be connected for fairing face with the internal face of impeller cavity at spout convex surface countervane, along water (flow) direction, the internal face of this countervane and oral siphon is formed the contraction shape closed channel of a fairing.
Rearmounted air deflector described in the utility model is made up of the internal face of a convex surface flow deflector and rising pipe, it is from the water sucking mouth, extend to the central region of rising pipe always, along water (flow) direction, the internal face of this flow deflector and rising pipe is formed the convergent-divergent shape passage of a fairing, is connected for fairing face with the impeller cavity internal face at water sucking mouth convex surface flow deflector.
The coaxial respectively interlocking of two end faces of the utility model impeller upstream and downstream has a plectane, the upstream is the sender plectane, the downstream is the balance plectane, the sender plectane is built-in with the foil of covering of the fan, as the signal transmitter of flow, measure-alike and and the sender plectane symmetry installation of balance plectane and sender geometry of the circle.
The utility model blade is the crooked shape blade that waits width, and the concave surface of blade is in face of water (flow) direction.
Principle of work of the present utility model is:
The utility model is provided with preposition guides at the oral siphon of flowmeter, in the impeller cavity bottom drain outlet is set, and at rising pipe rearmounted air deflector is set.Preposition guides, impeller cavity and rearmounted air deflector are formed the water stream channel of drive impeller rotation.Preposition guides, drain outlet and rearmounted air deflector are formed the current drain outlet.Preposition guides is made up of a convex surface countervane and part oral siphon internal face, and it extends to the water inlet place of impeller cavity from the oral siphon central region always.At impeller cavity water inlet place, the convex surface countervane is connected for fairing face with the impeller cavity internal face.Along water (flow) direction, this countervane and oral siphon internal face form the contraction shape closed channel of a fairing.Acting as of preposition guides: converge the speed of current and raising current, make current have bigger unit area impulsive force, more effectively impact blade.Advantage is: make the startup flow of propeller flowmeter little, the measuring accuracy height.
The rearmounted air deflector of the utility model is made up of a convex surface flow deflector and part rising pipe internal face, and it extends to the rising pipe central region from the impeller cavity water delivering orifice always.Along water (flow) direction, this flow deflector and rising pipe internal face are formed the convergent-divergent shape passage of a fairing.At impeller cavity water delivering orifice place, the convex surface flow deflector is connected for fairing face with the impeller cavity internal face.Acting as of rearmounted air deflector: reduce to be prone to eddy current and make the flow dynamic dissipation and cause the not high problem of measuring accuracy at sensor exit current.Advantage is: make the startup flow of propeller flowmeter little, and the measuring accuracy height, resistance to water-flow is little.
In impeller cavity, impeller shaft is laterally placed, and the end of blade edge of blade leaves the certain distance of impeller cavity bottom interior wall face, and end of blade edge and impeller cavity bottom interior wall face form the drain outlet.Impeller is fixed on the impeller shaft, is rabbeting a plectane respectively and with the impeller coaxial rotation, one is the sender plectane at two end faces of impeller, and another is the balance plectane.The sender plectane is built-in with the foil of covering of the fan, as the signal transmitter of flow.The balance plectane is identical with its physical dimension of sender plectane, is used for and sender plectane symmetry and balance.Blade is the curved blade that waits width, and the concave surface of blade is in face of water (flow) direction.Deng acting as of the crooked shape blade of width: can more effectively accept the impact power of current, make the dynamic dissipation of water impact blade little.Advantage is: make the startup flow of propeller flowmeter little, the measuring accuracy height.
The oral siphon of the flushing and discharging type propeller flowmeter of the utility model calorimeter inserted enter on the pipeline of heat supply user, and rising pipe and heat supply user join, just can obtain from the flushing and discharging type propeller flowmeter of calorimeter by supplying with hot user's the hot water water yield.
The utility model has the current of preventing impurity and stops up, and starts the characteristic that flow is little, measuring accuracy is high, resistance to water-flow is little.
Description of drawings
Fig. 1 is the flushing and discharging type propeller flowmeter structural representation of the utility model calorimeter.
Fig. 2 is the modular construction figure of the impeller of the utility model flowmeter.
Fig. 3-1 and Fig. 3-2 is the modular construction figure of the blade of the utility model flowmeter.
Wherein:
1. impeller shaft 2. impellers 3. blades
4. impeller cavity 5. impeller cavity shells 6. preposition guidess
7. oral siphon 8. spouts 9. drain outlets
10. water sucking mouth 11. rearmounted air deflector 12. rising pipes
13. sender plectane 14. balance plectanes
Embodiment
As Fig. 1, shown in Figure 2, the utility model flushing and discharging type propeller flowmeter, comprise impeller shaft 1, impeller 2, blade 3, impeller cavity 4, impeller cavity shell 5, oral siphon 7 and rising pipe 12, form impeller cavity in the impeller cavity shell, described impeller set is contained in and is installed in the impeller cavity on the impeller shaft, blade evenly is installed on the impeller, oral siphon is installed in the upstream of impeller cavity, rising pipe is installed in the downstream of impeller cavity, described impeller cavity shell is the semicircular shell of diameter greater than the oral siphon diameter, interlocking is between oral siphon and rising pipe, form the cavity that current are communicated with oral siphon and rising pipe, described impeller shaft laterally is placed in the impeller cavity, there is the space at the end of blade edge of blade far from the bottom interior wall face of impeller cavity, form drain outlet 9, oral siphon and impeller cavity shell junction are provided with preposition guides 6, form spout 8 between preposition guides and the oral siphon, rising pipe and impeller cavity shell junction are provided with rearmounted air deflector 11, form water sucking mouth 10, impeller cavity and spout between rearmounted air deflector and the rising pipe, the water sucking mouth is connected.
Preposition guides described in the utility model is made up of the internal face of a convex surface countervane and oral siphon, it is from the oral siphon central region, extend to spout always, be connected for fairing face with the internal face of impeller cavity at spout convex surface countervane, along water (flow) direction, the internal face of this countervane and oral siphon is formed the contraction shape closed channel of a fairing.
Rearmounted air deflector described in the utility model is made up of the internal face of a convex surface flow deflector and rising pipe, it is from the water sucking mouth, extend to the central region of rising pipe always, along water (flow) direction, the internal face of this flow deflector and rising pipe is formed the convergent-divergent shape passage of a fairing, is connected for fairing face with the impeller cavity internal face at water sucking mouth convex surface flow deflector.
As shown in Figure 2, the coaxial respectively interlocking of two end faces of the utility model impeller upstream and downstream has a plectane, the upstream is a sender plectane 13, the downstream is a balance plectane 14, the sender plectane is built-in with the foil of covering of the fan, as the signal transmitter of flow, measure-alike and and the sender plectane symmetry installation of balance plectane and sender geometry of the circle.
Shown in Fig. 3-1, Fig. 3-2, the utility model blade is the crooked shape blade that waits width, and the concave surface of blade is in face of water (flow) direction.
Claims (5)
1, a kind of flushing and discharging type propeller flowmeter, comprise impeller shaft (1), impeller (2), blade (3), impeller cavity (4), impeller cavity shell (5), oral siphon (7) and rising pipe (12), form impeller cavity in the impeller cavity shell, described impeller set is contained in and is installed in the impeller cavity on the impeller shaft, blade evenly is installed on the impeller, oral siphon is installed in the upstream of impeller cavity, rising pipe is installed in the downstream of impeller cavity, it is characterized in that: described impeller cavity shell is the semicircular shell of diameter greater than the oral siphon diameter, interlocking is between oral siphon and rising pipe, form the cavity that current are communicated with oral siphon and rising pipe, described impeller shaft laterally is placed in the impeller cavity, there is the space at the end of blade edge of blade far from the bottom interior wall face of impeller cavity, form drain outlet (9), oral siphon and impeller cavity shell junction are provided with preposition guides (6), form spout between preposition guides and the oral siphon, rising pipe and impeller cavity shell junction are provided with rearmounted air deflector (11), form the water sucking mouth, impeller cavity and spout (8) between rearmounted air deflector and the rising pipe, water sucking mouth (10) is connected.
2, flushing and discharging type propeller flowmeter as claimed in claim 1, it is characterized in that: preposition guides is made up of the internal face of a convex surface countervane and oral siphon, it is from the oral siphon central region, extend to spout always, be connected for fairing face with the internal face of impeller cavity at spout convex surface countervane, along water (flow) direction, the internal face of this countervane and oral siphon is formed the contraction shape closed channel of a fairing.
3, flushing and discharging type propeller flowmeter as claimed in claim 2, it is characterized in that: rearmounted air deflector is made up of the internal face of a convex surface flow deflector and rising pipe, it is from the water sucking mouth, extend to the central region of rising pipe always, along water (flow) direction, the internal face of this flow deflector and rising pipe is formed the convergent-divergent shape passage of a fairing, is connected for fairing face with the impeller cavity internal face at water sucking mouth convex surface flow deflector.
4, flushing and discharging type propeller flowmeter as claimed in claim 3, it is characterized in that: the coaxial respectively interlocking of two end faces of impeller upstream and downstream has a plectane, the upstream is sender plectane (13), the downstream is balance plectane (14), the sender plectane is built-in with the foil of covering of the fan, as the signal transmitter of flow, measure-alike and and the sender plectane symmetry installation of balance plectane and sender geometry of the circle.
5, as described in the claim 4, it is characterized in that: blade is for waiting crooked shape blade of width, and the concave surface of blade is in face of water (flow) direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520103578 CN2842382Y (en) | 2005-08-10 | 2005-08-10 | Flush-dischange type impeller flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520103578 CN2842382Y (en) | 2005-08-10 | 2005-08-10 | Flush-dischange type impeller flow meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2842382Y true CN2842382Y (en) | 2006-11-29 |
Family
ID=37446264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520103578 Expired - Fee Related CN2842382Y (en) | 2005-08-10 | 2005-08-10 | Flush-dischange type impeller flow meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2842382Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102645247A (en) * | 2012-05-09 | 2012-08-22 | 铜陵市三荣仪表科技有限公司 | Barrier-free straight-through flow type heat meter |
| CN104428632A (en) * | 2012-07-02 | 2015-03-18 | 迪格梅萨股份公司 | Flowmeter |
| CN107091665A (en) * | 2017-05-24 | 2017-08-25 | 轩脉家居科技（上海）有限公司 | A kind of adjusting flow meter |
-
2005
- 2005-08-10 CN CN 200520103578 patent/CN2842382Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102645247A (en) * | 2012-05-09 | 2012-08-22 | 铜陵市三荣仪表科技有限公司 | Barrier-free straight-through flow type heat meter |
| CN104428632A (en) * | 2012-07-02 | 2015-03-18 | 迪格梅萨股份公司 | Flowmeter |
| CN107091665A (en) * | 2017-05-24 | 2017-08-25 | 轩脉家居科技（上海）有限公司 | A kind of adjusting flow meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061129 Termination date: 20120810 |