CN110566449A - Flow sensing device and hydroelectric pump - Google Patents
Flow sensing device and hydroelectric pump Download PDFInfo
- Publication number
- CN110566449A CN110566449A CN201910785044.2A CN201910785044A CN110566449A CN 110566449 A CN110566449 A CN 110566449A CN 201910785044 A CN201910785044 A CN 201910785044A CN 110566449 A CN110566449 A CN 110566449A
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- Prior art keywords
- valve
- sensing device
- flow sensing
- liquid
- flow
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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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
- F16K31/20—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention provides a flow sensing device and a hydroelectric pump. The flow sensing device comprises: the liquid pump comprises a pipe body 10, a flow sensor 20 and a pressure increasing valve 30, wherein the pipe body 10 is provided with a liquid inlet and a liquid outlet, the liquid inlet is communicated with a water outlet of a pump body, at least part of the flow sensor 20 is positioned in the pipe body 10, the pressure increasing valve 30 is arranged on the pipe wall of the pipe body 10, so that when the pump body stops operating, the pressure increasing valve 30 is opened to communicate the outside of the pipe body 10 with the inside of the pipe body 10, and liquid in the pipe body 10 is prevented from flowing back to the liquid. Through set up the pressure-increasing valve on the body for the pump body is when stopping the operation, and the pressure-increasing valve is opened so that outside atmosphere communicates in with the body, avoids the pump body to produce the phenomenon that negative pressure induced water refluence, has improved the degree of accuracy of flow sensor to the monitoring of internal liquid flow of tube.
Description
Technical Field
The invention relates to the technical field of hydropower station equipment, in particular to a flow sensing device and a water-electricity pump with the same.
Background
In the prior art, in the operation process of a hydropower station, the water outlet pump is communicated with the flow sensor, when the water outlet pump stops supplying water, the water outlet pump can generate negative pressure relative to the external atmosphere, and the water outlet of the water outlet pump generates a suck-back phenomenon, so that the accuracy of the flow sensor for measuring the flow of liquid is influenced.
Disclosure of Invention
the invention mainly aims to provide a flow sensing device and a water-electricity pump with the same, so as to solve the problem of poor measurement accuracy of a flow sensor in the prior art.
To achieve the above object, according to one aspect of the present invention, there is provided a flow sensing apparatus comprising: the pipe body is provided with a liquid inlet and a liquid outlet, and the liquid inlet is communicated with the water outlet of the pump body; a flow sensor, at least a portion of which is located within the body; and the pressure increasing valve is arranged on the pipe wall of the pipe body, so that when the pump body stops operating, the pressure increasing valve is opened to communicate the outside of the pipe body with the inside of the pipe body, and liquid in the pipe body is prevented from flowing back to the liquid inlet from the liquid outlet.
Furthermore, the pressure increasing valve is provided with an opening position for communicating the outside of the pipe body with the inside of the pipe body, the pressure increasing valve is provided with a closing position for isolating the outside of the pipe body from the inside of the pipe body, and the pressure increasing valve is provided with a floater so as to control the height of the floater through the height of the liquid level in the pipe body and drive the pressure increasing valve to be positioned at the opening position or the closing position.
Further, the pressure increasing valve includes: the valve shell is provided with an air inlet communicated with the atmosphere and an air outlet communicated with the pipe body, and an accommodating cavity is formed between the air inlet and the air outlet; the valve body, the first end of valve body movably sets up in holding the intracavity, and the valve body has the first position of opening the air inlet, and the valve body has the second position of closing the air inlet, and the second end of valve body has the float to the height through the height control float of the liquid level in the body, so that the valve body is located first position or second position, wherein, when the valve body is located the first position, the booster valve is located open position, when the valve body is located the second position, the booster valve is located closed position.
Further, the middle part that holds the chamber has spacing portion, and the valve body includes: the plug is movably arranged between the limiting part and the air inlet so as to open or close the air inlet; the valve comprises a valve core, wherein a float is arranged at the first end of the valve core, a stopping part is arranged at the second end of the valve core, the second end of the valve core is connected with a plug in a matched mode, when the valve body is located at the first position, the stopping part is abutted against the limiting part, the plug is made to be far away from the air inlet, and when the valve body is located at the second position, the float drives the stopping part to be separated from the limiting part, and the plug is made to seal the air inlet.
Further, the middle part that holds the chamber has spacing portion, and the valve body includes: the first end of the elastic piece is abutted against the stopping part, and the second end of the elastic piece is abutted against the plug so as to control the height of the floater through the height of the liquid level in the tube and drive the stopping part to move to change the compression state of the elastic piece.
Further, the spacing portion includes: the limiting plate is connected with the cavity wall of the accommodating cavity, a limiting hole is formed in the middle of the limiting plate, the second end of the valve core penetrates through the limiting hole, and a plurality of vent holes are formed in the limiting plate.
Furthermore, a positioning bulge is arranged on one side of the middle part of the plug, which faces the outside of the pipe body.
Furthermore, the number of the pressure increasing valves is two, the two pressure increasing valves are arranged at intervals, and the flow sensor is located between the two pressure increasing valves.
further, the flow sensor is a turbine flow meter.
According to another aspect of the present invention there is provided a hydroelectric pump comprising flow sensing means, the flow sensing means being as described above.
By applying the technical scheme of the invention, the pressure increasing valve is arranged on the pipe body, so that when the pump body stops working, the pressure increasing valve is opened to communicate the external atmosphere with the inside of the pipe body, the phenomenon that the pump body generates negative pressure to suck water and flow back is avoided, and the accuracy of monitoring the liquid flow in the pipe body by the flow sensor is improved.
drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 shows a schematic axial side view of an embodiment of a flow sensing device according to the present invention;
FIG. 2 shows an exploded view of an embodiment of a flow sensing device according to the present invention;
FIG. 3 shows a cross-sectional structural schematic of an embodiment of a flow sensing device according to the present invention.
wherein the figures include the following reference numerals:
10. A pipe body;
20. A flow sensor;
30. A pressure increasing valve; 31. a valve housing; 311. a limiting part; 3111. a limiting plate; 32. a valve body; 321. a float; 322. a plug; 3221. positioning the projection; 323. a valve core; 3231. a stopper portion; 324. an elastic member.
Detailed Description
it should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1 to 3, according to an embodiment of the present invention, a flow sensing device and a submersible pump having the same are provided.
specifically, as shown in fig. 1, the flow sensing device includes: the liquid pump comprises a pipe body 10, a flow sensor 20 and a pressure increasing valve 30, wherein the pipe body 10 is provided with a liquid inlet and a liquid outlet, the liquid inlet is communicated with a water outlet of a pump body, at least part of the flow sensor 20 is positioned in the pipe body 10, the pressure increasing valve 30 is arranged on the pipe wall of the pipe body 10, so that when the pump body stops operating, the pressure increasing valve 30 is opened to communicate the outside of the pipe body 10 with the inside of the pipe body 10, and liquid in the pipe body 10 is prevented from flowing back to the liquid.
In this embodiment, through set up the pressure-increasing valve on the body for the pump body is when stopping the operation, and the pressure-increasing valve is opened so that outside atmosphere and body are interior to be linked together, avoids the pump body to produce the phenomenon that negative pressure induced water refluence, has improved the degree of accuracy of flow sensor to the monitoring of internal liquid flow of tube.
In the present embodiment, the pressure increasing valve 30 has an open position for communicating the outside of the tubular body 10 with the inside of the tubular body 10, and the pressure increasing valve 30 has a closed position for isolating the outside of the tubular body 10 from the inside of the tubular body 10, and the pressure increasing valve 30 has a float 321 for controlling the height of the float 321 by the height of the liquid level inside the tubular body 10 to bring the pressure increasing valve 30 to the open position or the closed position. When the pump body is normally opened to discharge water, liquid in the pipe body 10 fills the pipeline, the floater 321 is driven by buoyancy to drive the pressure increasing valve 30 to be located at the closed position, when the pump body is closed, the liquid in the pipe body 10 descends, the floater 321 is driven by buoyancy reduction operation to drive the pressure increasing valve 30 to be located at the open position, so that external atmosphere enters the pipe body 10, negative pressure generated by the pump body is eliminated, the phenomenon that the pump body generates negative pressure to suck water and flow back is avoided, and the accuracy of monitoring of liquid flow in the pipe body by the flow sensor is improved.
As shown in fig. 2, the pressure increasing valve 30 includes: the valve comprises a valve shell 31 and a valve body 32, wherein the valve shell 31 is provided with an air inlet communicated with the atmosphere, the valve shell 31 is provided with an air outlet communicated with the tube body 10, a containing cavity is formed between the air inlet and the air outlet, a first end of the valve body 32 is movably arranged in the containing cavity, the valve body 32 is provided with a first position for opening the air inlet, the valve body 32 is provided with a second position for closing the air inlet, and a floater 321 is arranged at a second end of the valve body 32 so as to control the height of the floater 321 through the height of liquid level in the tube body 10, so that the valve body 32 is positioned at the first position or the second position, wherein when the valve body 32 is positioned at the first position, the booster valve 30 is positioned at the open position, and when the valve body 32 is positioned at the second position. The switch of the pump body influences the height of the liquid level in the pipe body, and then influences the height of float 321, and float 321 receives buoyancy and reduces the operation and drive valve body 32 and be located the first position so that the air inlet is opened to make external atmosphere get into in the pipe body 10, in order to eliminate the negative pressure that the pump body produced, avoid the pump body to produce the phenomenon that the negative pressure induced water refluence, improved the degree of accuracy of flow sensor to the monitoring of internal liquid flow of pipe.
In this embodiment, the middle portion of the accommodation chamber has a stopper portion 311, and the valve body 32 includes: the stop portion 3231 abuts against the limiting portion 311 and enables the plug 322 to be far away from the air inlet when the valve body 32 is located at the first position, and when the valve body 32 is located at the second position, the float 321 drives the stop portion 3231 to be separated from the limiting portion 311 and enables the plug 322 to seal the air inlet. The air inlet can be opened or closed by providing a plug 322.
As shown in fig. 2 and 3, the middle portion of the accommodation chamber has a stopper portion 311, and the valve body 32 includes: the first end of the elastic member 324 abuts against the stop portion 3231, and the second end of the elastic member 324 abuts against the plug 322, so as to control the height of the float 321 according to the height of the liquid level in the tube 10, and drive the stop portion 3231 to move, so as to change the compression state of the elastic member 324. When the pump body is opened, the liquid level in the pipe body 10 is full, the floater 321 is subjected to larger buoyancy, the plug is subjected to the action of the elastic force K1 of the elastic piece 324 compressed under the action of the larger buoyancy, and the external atmospheric pressure is less than K1; when the pump body is closed, the liquid level in the pipe body 10 drops, the floater 321 is subjected to smaller buoyancy or is not subjected to buoyancy, at the moment, the plug is subjected to the action of elastic force K2 for compressing the elastic piece 324 under the action of smaller buoyancy or under the action of no buoyancy, the external atmospheric pressure is greater than K2, and the air inlet of the plug 322 is pushed open, so that the external atmosphere enters the pipe body, and the generation of negative pressure of the pump body is avoided. The elastic member 324 is a spring.
in the present embodiment, the stopper portion 311 includes: limiting plate 3111, limiting plate 3111 are connected with the chamber wall that holds the chamber, and limiting plate 3111's middle part begins to have a spacing hole, and the second end of case 323 is worn to locate in the spacing hole, has seted up a plurality of air vents on the limiting plate 3111. When the air inlet is convenient for the plug principle, external pressure can enter the pipe body through the vent holes of the limiting plate 3111.
Preferably, a positioning protrusion 3221 is disposed on a side of the middle portion of the plug 322 facing the outside of the tube body 10. The arrangement is convenient for the plug 322 to be matched with the air inlet through the positioning protrusions 3221, so that when the valve body 32 is located at the second position, the stability of the air tightness of the plug for plugging the air inlet is improved, and the air leakage phenomenon caused by the offset of the plug is avoided.
As shown in fig. 1, the booster valves 30 are two, the two booster valves 30 are provided at intervals, and the flow sensor 20 is located in the middle of the two booster valves 30. This arrangement facilitates to enhance the pressurizing effect of the pressurizing valve 30.
Preferably, the flow sensor 20 is a turbine flow meter. Wherein the turbine of the turbine flowmeter is located within the tubular body 10.
according to another aspect of the present invention there is provided a hydroelectric pump comprising flow sensing means in the form of the flow sensing means of the above embodiments. The hydroelectric pump comprises a pump body water outlet, and the flow sensing device is communicated with the pump body water outlet so as to accurately monitor the water outlet flow of the hydroelectric pump through the flow sensing device.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A flow sensing device, comprising:
the pump body comprises a pipe body (10), wherein the pipe body (10) is provided with a liquid inlet and a liquid outlet, and the liquid inlet is communicated with a water outlet of the pump body;
A flow sensor (20), at least part of the flow sensor (20) being located within the tubular body (10);
The booster valve (30), booster valve (30) set up in on the pipe wall of body (10), so that when the pump body stop work, booster valve (30) are opened to communicate in with body (10) outside with body (10), in order to avoid the liquid in body (10) to flow back to by the liquid outlet to the inlet.
2. A flow sensing device according to claim 1, characterised in that the pressurising valve (30) has an open position in which the outside of the body (10) is in communication with the inside of the body (10), and the pressurising valve (30) has a closed position in which the outside of the body (10) is isolated from the inside of the body (10), the pressurising valve (30) having a float (321) to control the height of the float (321) by the height of the liquid level in the body (10) to bring the pressurising valve (30) into the open or closed position.
3. A flow sensing device according to claim 2, wherein the pressurization valve (30) comprises:
a valve housing (31), the valve housing (31) having an inlet port communicating with the atmosphere, and the valve housing (31) having an outlet port communicating with the tube body (10), the inlet port and the outlet port forming an accommodating chamber therebetween;
A valve body (32), a first end of the valve body (32) being movably disposed within the receiving cavity, the valve body (32) having a first position in which the air inlet is open, the valve body (32) having a second position in which the air inlet is closed, a second end of the valve body (32) having the float (321) to control a height of the float (321) by a height of a liquid level within the tube (10) such that the valve body (32) is in the first position or the second position, wherein when the valve body (32) is in the first position, the booster valve (30) is in the open position, and when the valve body (32) is in the second position, the booster valve (30) is in the closed position.
4. A flow sensing device according to claim 3, wherein the receiving chamber has a stopper portion (311) in the middle thereof, and the valve body (32) comprises:
the plug (322) is movably arranged between the limiting part (311) and the air inlet so as to open or close the air inlet;
the valve comprises a valve core (323), wherein the floater (321) is arranged at the first end of the valve core (323), a stopping portion (3231) is arranged at the second end of the valve core (323), the second end of the valve core (323) is connected with the plug (322) in a matched mode, when the valve body (32) is located at the first position, the stopping portion (3231) is abutted to the limiting portion (311), the plug (322) is far away from the air inlet, and when the valve body (32) is located at the second position, the floater (321) drives the stopping portion (3231) to be separated from the limiting portion (311), and the plug (322) seals the air inlet.
5. A flow sensing device according to claim 4, wherein the receiving chamber has a stopper portion (311) in the middle thereof, and the valve body (32) comprises:
The first end of the elastic piece (324) is abutted against the stopping portion (3231), and the second end of the elastic piece (324) is abutted against the plug (322) so as to control the height of the floater (321) through the height of the liquid level in the pipe body (10) and drive the stopping portion (3231) to move, so that the compression state of the elastic piece (324) is changed.
6. A flow sensing device according to claim 4, wherein the limiting portion (311) comprises:
The limiting plate (3111), the limiting plate (3111) with the chamber wall that holds the chamber is connected, the middle part of limiting plate (3111) begins to have a spacing hole, the second end of case (323) wears to locate in the spacing hole, a plurality of air vents have been seted up on limiting plate (3111).
7. The flow sensing device according to claim 4, characterized in that a positioning protrusion (3221) is arranged on one side of the middle part of the plug (322) facing the outside of the pipe body (10).
8. A flow sensing device according to claim 1, wherein there are two said booster valves (30), two said booster valves (30) being spaced apart, said flow sensor (20) being located intermediate said two booster valves (30).
9. A flow sensing device according to claim 1, wherein the flow sensor (20) is a turbine flow meter.
10. a hydroelectric pump comprising flow sensing means, wherein the flow sensing means is as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910785044.2A CN110566449A (en) | 2019-08-23 | 2019-08-23 | Flow sensing device and hydroelectric pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910785044.2A CN110566449A (en) | 2019-08-23 | 2019-08-23 | Flow sensing device and hydroelectric pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110566449A true CN110566449A (en) | 2019-12-13 |
Family
ID=68775947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910785044.2A Pending CN110566449A (en) | 2019-08-23 | 2019-08-23 | Flow sensing device and hydroelectric pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110566449A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03186673A (en) * | 1989-12-15 | 1991-08-14 | Kubota Corp | Air valve |
| GB2276700A (en) * | 1993-04-03 | 1994-10-05 | Stephen William Lacey | Automatic fluid trap and draining unit |
| CN2304790Y (en) * | 1997-08-01 | 1999-01-20 | 张天佐 | Self opening anti-frozen valve |
| US6328069B1 (en) * | 2000-09-08 | 2001-12-11 | Timothy Andrew Schumann | Oil purging device |
| CN2637834Y (en) * | 2003-08-18 | 2004-09-01 | 无锡中安工程设备制造有限公司 | Direct floating negative pressure inhibition device |
| CN101093023A (en) * | 2006-06-22 | 2007-12-26 | 刘延军 | Non-negative pressure valve |
| CN201827496U (en) * | 2010-09-16 | 2011-05-11 | 李玉源 | Negative-pressure preventive control valve |
| CN104154017A (en) * | 2014-07-29 | 2014-11-19 | 南通理工学院 | Water pump detecting system |
| CN211525054U (en) * | 2019-08-23 | 2020-09-18 | 贵州乌江水电开发有限责任公司索风营发电厂 | Flow sensing device and hydroelectric pump |
-
2019
- 2019-08-23 CN CN201910785044.2A patent/CN110566449A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03186673A (en) * | 1989-12-15 | 1991-08-14 | Kubota Corp | Air valve |
| GB2276700A (en) * | 1993-04-03 | 1994-10-05 | Stephen William Lacey | Automatic fluid trap and draining unit |
| CN2304790Y (en) * | 1997-08-01 | 1999-01-20 | 张天佐 | Self opening anti-frozen valve |
| US6328069B1 (en) * | 2000-09-08 | 2001-12-11 | Timothy Andrew Schumann | Oil purging device |
| CN2637834Y (en) * | 2003-08-18 | 2004-09-01 | 无锡中安工程设备制造有限公司 | Direct floating negative pressure inhibition device |
| CN101093023A (en) * | 2006-06-22 | 2007-12-26 | 刘延军 | Non-negative pressure valve |
| CN201827496U (en) * | 2010-09-16 | 2011-05-11 | 李玉源 | Negative-pressure preventive control valve |
| CN104154017A (en) * | 2014-07-29 | 2014-11-19 | 南通理工学院 | Water pump detecting system |
| CN211525054U (en) * | 2019-08-23 | 2020-09-18 | 贵州乌江水电开发有限责任公司索风营发电厂 | Flow sensing device and hydroelectric pump |
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Application publication date: 20191213 |