CN201672940U - Flowmeter - Google Patents
Flowmeter Download PDFInfo
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- CN201672940U CN201672940U CN2009200950920U CN200920095092U CN201672940U CN 201672940 U CN201672940 U CN 201672940U CN 2009200950920 U CN2009200950920 U CN 2009200950920U CN 200920095092 U CN200920095092 U CN 200920095092U CN 201672940 U CN201672940 U CN 201672940U
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- pipe
- flowmeter
- pipeline member
- throttling element
- pipeline
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Abstract
The utility model relates to a flowmeter, which comprises a pipeline component (01) and a pipe internal throttling component (02). The pipe internal throttling component (02) is mounted on the inner wall of the pipeline component (01), and a diversion surface (03) is an arc-shaped surface consisting of a circular arc-shaped surface and a double-curved surface. The flowmeter further comprises a left pressure tapping hole (04) and a right pressure tapping hole (05), two ends of the pipeline component (01) are provided with welding openings (08, 09) which are used for being connected with an external pipeline in a welding manner, or the two ends of the pipeline component (01) are provided with a left flange port (06) and a right flange port (07) which are used for being connected with the external pipeline, and the pipe internal throttling component (02) is mounted in the pipeline component in an embedding or welding manner. As the diversion surface (03) adopts the arc-shaped surface, particularly adopts the double-curved surface, loss of momentum produced by collision of the existing orifice plate or tapered and inclined plane throttling flowmeter with the liquid is greatly decreased, and resistance of the flowmeter to fluid is greatly reduced. Compared with the conventional orifice plate flowmeter, the flowmeter can avoid two-phase separation change of flow medium flowing in a pipeline, and greatly increases measuring precision.
Description
Technical field
The utility model belongs to mechanical field, particularly measures the device of fluid flow in the pipeline.
Background technology
Existing standard orifice plate flowmeter is the throttle type differential flow measurement mechanism with standard orifice plate and the supporting composition of differential pressure transmitter, but the flow of measurement gas, steam, liquid and rock gas, be widely used in the process control and the flow measurement in fields such as oil, chemical industry, metallurgy, electric power, heat supply, water supply, steam supply, the usage quantity maximum.
The orifice flowmeter principle of work is to set up throttle orifice plate apparatus in the fluid that is full of pipeline is flowed through pipeline, causes the edge to shrink near the orifice plate restricting element, and flow velocity is increased, thereon, that the both sides, downstream produce static pressure is poor.Under the condition of known duty parameter, try to achieve flow according to the relation that flow continuity principle and Bernoulli equation can be derived between differential pressure and the flow.
Use traditional throttle orifice plate apparatus at present, though its structure is simple, because the sudden contraction of edge throttling convection cell has brought unsurmountable dead time effect:
1. it is very limited to measure range ratio, is about 4: 1;
2. the differential pressure signal noise is big, causes measuring accuracy and repeatability low;
3. orifice plate throttling meeting makes the flow field irregular, needs very long straight length rectification;
4. when being horizontally disposed with pipeline, orifice plate lower end trash flow is not pass by, and it is long-pending easily to pile up the change pipeline section, is not suitable for surveying dirty, impure and sticky medium;
5. orifice plate upstream and downstream eddy current causes kinetic energy rejection, and the permanent compression loss is big, wastes energy;
6. orifice plate throttling element acute angle inner edge is very thin, and wearing and tearing easily produce measuring error, reduction of service life;
7. assembling deviation appears in project installation scene easily, and anisotropy increases maintenance;
8. the fluid that influenced by temperature and pressure for volume, orifice plate sudden contraction throttling meeting brings flow cross-sectional area instability in the dead band, and differential pressure signal is produced very big overlay error, to critical conditions near fluid, be easy to cause phase transformation, cause and measure disorder.
A kind of Cone Flowmeter is arranged, place a throttling circular cone in fluid line central authorities and measure flow, also can better solve sticky medium and impurity obstructing problem, and symmetrical structure arranged, can dwindle straight length, but the turbulent flow of cone afterbody is a lot, and crushing is bigger relatively, and the defective of structural potential safety hazard is arranged.
Therefore, pipeline flow is measured the restriction flowmeter of such hyperboloid ring texture, equiulbrium flow linear shrinkage and release of requirement of engineering.Hyperboloid balance flow gauge is taken into account Cone Flowmeter with conventional holes plate current amount and is compared, the variation that fluid flow fields distributes is the most stable, make fluid be subjected to the influence of internals to produce circulation area and temperature, pressure drops to minimum, can not produce the two-phase separation variation, throttling well, rectification has well again improved measuring accuracy and repeatability by a relatively large margin, reduced the permanent compression loss, shortened the straight length requirement, enlarged the measurement range ratio, impurity is dirty can easily to be passed through.The advantage of orifice flowmeter and wedge-type flowmeter, Cone Flowmeter is integrated, and shortcoming overcomes to fall substantially, is very big technical renovation.
The utility model content
The purpose of this utility model, be to provide a kind of flowmeter, the variation that described flowmeter can make fluid temperature (F.T.) and pressure drops to minimum degree to the influence of flowmeter internals as far as possible, the loss of momentum that fluid collision flowmeter is produced reduces, thereby more accurate more effective measurement data is provided.
The purpose of this utility model is to realize like this, adopt a kind of flowmeter, comprise pipeline member 01, throttling element 02 in the pipe, throttling element 02 is installed on the inwall of pipeline member 01 in the pipe, throttling element 02 and pipeline member 01 coaxial setting in the pipe, it is characterized in that the guide face 03 of throttling element 02 is a cambered surface in the pipe, is arc surface, be hyperboloid, guide face 03 is axisymmetric along self.
The utility model has the advantages that, because the guide face 03 of throttling element 02 has adopted cambered surface in the pipe of flowmeter, particularly adopted hyperboloid, throttling element 02 plays inner restrictor ring in the pipe, the water conservancy diversion cambered surface greatly reduces present orifice plate or butt joint lozenges flowmeter convection cell collides and the loss of momentum of generation, reduced the resistance of flowmeter convection cell greatly, made the whole flowmeter can more accurate more effective measurement data.Flowmeter of the present utility model is compared with traditional orifice flowmeter, is very big technical renovation, and it can keep, and flow media does not produce the two-phase separation variation in the pipeline when mobile, has improved measuring accuracy by a relatively large margin.
Description of drawings
Fig. 1 is the structure key diagram of flowmeter of the present utility model,
Fig. 2 is the another key diagram of the structure of flowmeter of the present utility model,
Fig. 3 is an embodiment of flowmeter of the present utility model, is called integral solder formula embodiment key diagram.
Fig. 4 is another embodiment of flowmeter of the present utility model, the embodiment key diagram of flanged dish port.
Fig. 5 is the 3rd embodiment of flowmeter of the present utility model, is the embedded embodiment key diagram of pipeline.
Fig. 6 is the 4th embodiment of flowmeter of the present utility model, is the embodiment key diagram of flange wafer type.
Embodiment
Flowmeter of the present utility model is installed in the passage that fluid passes through so that transversal described pipeline, or is installed to and connects two-phase and face in two flanges of pipeline, by the flange mesopore, communicates with pipeline.
Below in conjunction with accompanying drawing, the architectural feature of flowmeter of the present utility model is described in further detail.
The structure of flowmeter of the present utility model belongs to differential orifice flowmeter, and the structure of differential orifice flowmeter is known by those skilled in the art, therefore, only provides structure one longitudinal diagram of flowmeter of the present utility model here, is illustrated.
Consult Fig. 1, Fig. 1 is the structure key diagram of flowmeter of the present utility model, is a longitudinal diagram.As previously mentioned, shown in the figure, also can be described as flowmeter nuclear, it is the core component of flowmeter, described flowmeter nuclear is represented with Reference numeral 1, in Fig. 5 and Fig. 6, directly adopted the structure of this figure, all be to represent with Reference numeral 1, described flowmeter nuclear comprises pipeline member 01, throttling element 02 in the pipe, throttling element 02 is installed on the inwall of pipeline member 01 in the pipe, throttling element 02 and pipeline member 01 coaxial setting in the pipe, throttling element 02 and pipeline member 01 are axle with the center longitudinal axis X-X of the pipeline of pipeline member 01 all in the pipe, coaxial setting.
Shown in the figure, the inside surface of throttling element 02 is called guide face 03 in the pipe in the utility model, is the cambered surface of a solid, shown in the figure, the section of guide face 03 is a camber line, and camber line has axis of symmetry Z-Z, this feature is expressed as, and the guide face 03 of throttling element 02 is axisymmetric along self in the pipe.The intersection point of the camber line of the section of axis of symmetry Z-Z and guide face 03 is designated as B, shown in this sectional view, the profile line E-E of the inner tube surface of pipeline member 01 is the straight line parallel to each other with the center longitudinal axis X-X of pipeline, the intersection point of the profile line E-E of the inner tube surface of the camber line of the section of guide face 03 and pipeline member 01 is designated as marginal point A, the angle C that the straight line AB of connection A and B and the profile line E-E of inner tube surface form, also can regard the angle C that forms between the center longitudinal axis X-X of straight line AB and pipeline as, in the utility model, the angle of angle C is chosen between 60 degree scopes at 30 degree.
Cambered surface of the present utility model comprises that the balanced flow of the arc surface of hyperboloid etc. counts axially symmetric structure, as the hourglass of a traverse.The zone that the profile line E-E of the inner tube surface of the guide face 03 of throttling element 02 and pipeline member 01 is surrounded in the pipe is a solid.
Consult Fig. 2, Fig. 2 is the another key diagram of the structure of flowmeter of the present utility model, be with 02 two incorporated structures of parts of throttling element in pipeline member 01 and the pipe, in the structure of Fig. 1, throttling element 02 is two other parts of branch in pipeline member 01 and the pipe, that is, be two parts, or regard two parts as, make respectively, in this example, throttling element 02 is an integrative-structure in pipeline member 01 and the pipe, it is a body component that is processed into by a block of material, as parts, for example, become by smart die cast integrally casting, or, utilize a block of material by the integrally manufactured one-tenth of machining.Other structure is identical with Fig. 1's, and Reference numeral has also correspondingly marked guide face 03 etc., is identical with the agent structure shown in Fig. 1.
Structure illustrated in figures 1 and 2 all belongs to content of the present utility model, in the following examples, though only adopt a kind of said structure to describe in every example,, explanation here, two kinds of top structures all are fit to following examples.
Consult Fig. 3, Fig. 3 is an embodiment of flowmeter of the present utility model, is called integral solder formula embodiment key diagram.The agent structure of present embodiment is identical to those shown in Fig. 1, that is, center section is identical with Fig. 1, has increased some architectural features.Shown in the figure, in order to measure pressure reduction, pipeline member 01 is provided with left pressure port 04 and right pressure port 05, it is the through hole of on the tube wall of pipeline member 01, opening, normally small sircle hole, or tapped small sircle hole is so that install and measure instrument, left side pressure port 04 and right pressure port 05 are separately positioned on the both sides of throttling element 02 in the pipe, leave throttling element 02 in the pipe slightly.Usually, the left pressure port 04 of both sides and the right pressure port 05 that is arranged on throttling element 02 in the pipe is to be symmetrical arranged with respect to throttling element 02 in the pipe.
In order to be connected with Outer Tube, the flowmeter of present embodiment, the two ends of pipeline member 01 have set soldering opening 08,09, are used for being connected with welding manner with Outer Tube.Soldering opening 08,09 can be the form of the soldering opening of any suitable butt welding connection, for example, and the domatic weld bond.
The mode that the interior throttling element 02 of pipe is fixed in the pipeline member 01 is that pipeline is embedded, or welded type.Under the structure of present embodiment, welded type normally, it is embedded also can to manufacture pipeline.
The flowmeter of the structure of present embodiment is the complete structure that can directly utilize.
Consult Fig. 4, Fig. 4 is another embodiment of flowmeter of the present utility model, the embodiment key diagram of flanged dish port.
The structure of present embodiment, basic identical with the structure of Fig. 3 embodiment, the key distinction is at the port organization at two ends, in order to be connected with Outer Tube, the flowmeter of present embodiment, the two ends of pipeline member 01 do not set soldering opening, but be configured to ring flange, include left flange plate port 06 and right ring flange port 07, left flange plate port 06 and right ring flange port 07 are separately positioned on the two ends of pipeline member 01, are used for being connected with the ring flange mode with Outer Tube.
In the structure of present embodiment, similarly, also include left pressure port 04 and right pressure port 05, left pressure port 04 and right pressure port 05 are separately positioned on the both sides of throttling element 02 in the pipe.Usually, the left pressure port 04 of both sides and the right pressure port 05 that is arranged on throttling element 02 in the pipe is to be symmetrical arranged with respect to throttling element 02 in the pipe.
Equally, under the structure of present embodiment, the mode that the interior throttling element 02 of pipe is fixed in the pipeline member 01 can be that pipeline is embedded, or welded type.
The flowmeter of the structure of present embodiment is the complete structure that can directly utilize.
Consult Fig. 5, Fig. 5 is the 3rd embodiment of flowmeter of the present utility model, is the embedded embodiment key diagram of pipeline.In this example, flowmeter comprises left pipeline member 011, right pipeline member 012, flowmeter nuclear 1, wherein,
Described flowmeter nuclear 1 is to include pipeline member 01 as Fig. 1 or identical structure shown in Figure 2, throttling element 02 in the pipe, throttling element 02 is installed on the inwall of pipeline member 01 in the pipe, throttling element 02 and pipeline member 01 coaxial setting in the pipe, and the guide face 03 of throttling element 02 is a cambered surface in the pipe.Cambered surface comprises arc surface, hyperboloid.
Different with preceding two example structure, in this example, pipeline member 01 is to separate from the centre, be divided into left pipeline member 011 and right pipeline member 012, the use that cooperatively interacts of a left side pipeline member 011 and right pipeline member 012, therefore has identical interior diameter D, the sidepiece that left side pipeline member 011 and right pipeline member 012 cooperatively interact, have annular concave platform 11 respectively relatively, 12, concave station 11,12 the degree of depth and width, cooperatively interact with the flowmeter nuclear 1 shown in Fig. 1 or Fig. 2, flowmeter nuclear 1 shown in Fig. 1 or Fig. 2 embeds annular concave platform 11, in 12 the space, flowmeter nuclear 1 embeds annular concave platform 11, situation behind 12 the space is identical with situation in the pipeline in preceding two example structure.
In this example, be provided with left pressure port 04 and right pressure port 05 respectively on left side pipeline member 011 and the right pipeline member 012, left flange plate port 06 and right ring flange port 07, left flange plate port 06 and right ring flange port 07 are separately positioned on the left end of left pipeline member 011 and the right-hand member of right pipeline member 012
After left pipeline member 011 and right pipeline member 012 embed the space of annular concave platform 11,12 with flowmeter nuclear 1, flowmeter nuclear 1 is setting placed in the middle, be arranged on the middle of left pipeline member 011 and right pipeline member 012, left side pipeline member 011 and right pipeline member 012 are welded together, and are configured to complete flowmeter.
In addition, 1 Fig. 2 is described identical with prior figures, the line AB of the marginal point A of the inner vertex B in the longitudinal profile of the cambered surface of the guide face 03 of throttling element 02 and same section in the pipe, between 60 degree scopes, choose at 30 degree with the angle of the angle C that pipeline member 01 axis X-X became, throttling element 02 is two other parts of branch in pipeline member 01 and the pipe, or integrative-structure, is a body component that is processed into by a block of material, because structure is clear and definite, from figure, omitted about the Reference numeral of angle.
Consult Fig. 6, Fig. 6 is the 4th embodiment of flowmeter of the present utility model, is the embodiment key diagram of flange wafer type.
The structure of Fig. 6 is to combine a kind of variation structure that the feature of top embodiment forms again, is that macrostructure is resolved into minor structure, combines again, forms complete product, is a kind of structure of ingenious variation.
Shown in flowmeter comprise flowmeter nuclear 1, left flange plate outer tube body 21, right ring flange outer tube body 22, left flange plate 31, right ring flange 32,6, two pads 7 of several securing members, wherein,
Flowmeter nuclear 1 is that as shown in Figure 1 identical structure includes pipeline member 01, throttling element 02 in the pipe, throttling element 02 is installed on the inwall of pipeline member 01 in the pipe, throttling element 02 and pipeline member 01 coaxial setting in the pipe, the guide face 03 of throttling element 02 is a cambered surface in the pipe, and cambered surface comprises arc surface, hyperboloid.
In addition, similarly, 1 Fig. 2 is described identical with prior figures, the line AB of the marginal point A of the inner vertex B in the longitudinal profile of the cambered surface of the guide face 03 of throttling element 02 and same section in the pipe chooses between 60 degree scopes at 30 degree with the angle of the angle C that pipeline member 01 axis X-X became, and throttling element 02 is two other parts of branch in pipeline member 01 and the pipe, or integrative-structure, be a body component that is processed into by a block of material,, from figure, omitted about the Reference numeral of angle because structure is clear and definite.
Left flange plate outer tube body 21 and right ring flange outer tube body 22 all are short tube and the structure that is provided with disk in end of short tube, have ring flange connecting hole 4 on the disk, ring flange connecting hole 4 is manhole normally, is used for being connected with Outer Tube, the interior diameter D of short tube is selected as required
The non-disk end of left flange plate outer tube body 21 and the pipe end same axis of left flange plate 31 are connected, and the non-disk end of right ring flange outer tube body 22 and the pipe end same axis of right ring flange 32 are connected, and adopt usually to be welded to connect, and make one respectively,
The structure assemble sequence from left to right is, the integral piece that is connected of left flange plate outer tube body 21 and left flange plate 31, utilization dish end, connect a slice pad 7, connect flowmeter nuclear 1 again, connect a slice pad 7 again, utilize several securing members 6 again, connect the dish end that is connected integral piece of right ring flange outer tube body 22 and right ring flange 32, finish assembling.
The structure assemble sequence also can be from right to left, one-piece construction, and total structure, as broad as long.
That is to say, this embodiment realizes like this, flowmeter nuclear 1 for example adopts hyperboloid balance flow gauge nuclear 1, hyperboloid balance flow gauge nuclear 1 is clipped between the left flange plate 31 and right ring flange 32 of paired use, two ports of hyperboloid balance flow gauge nuclear 1 are the port of the endoporus of described two ring flanges in corresponding both sides respectively, promptly, port, just in time about the port periphery of port-stuck hyperboloid balance flow gauge 1 of two flanges, 7 is pad, for preventing that fluid from overflowing, pad 7 is placed their interface, and just, the left and right sides of flowmeter nuclear 1 is provided with pad 7, like this, flowmeter nuclear 1 just can with two ring flanges 31,32 enclosure-types connect.Two ring flanges 31,32 are fixing by securing member 6.Two ring flanges 31,32 present symmetry status in the both sides of hyperboloid balance flow gauge 1, near near flowmeter nuclear 1 and directly over flange to, the pressure port 5 that two symmetries or a plurality of symmetries are set is measured needs to satisfy, but external sensor etc.4 is the flange nut hole, and other face flange mutually to act as connection.
The connected mode of this embodiment hyperboloid balance flow gauge 1 is a bayonet type, does not need welding, and is easy for installation, and transposing is free.
Flowmeter of the present utility model, according to structure, particularly core texture when adopting hyperboloid, can be described as hyperboloid balance flow gauge.
Claims (10)
1. a flowmeter comprises pipeline member (01), throttling element (02) in the pipe, throttling element (02) is installed on the inwall of pipeline member (01) in the pipe, throttling element (02) and the coaxial setting of pipeline member (01) is characterized in that in the pipe, and the guide face (03) of throttling element (02) is a cambered surface in the pipe.
2. flowmeter as claimed in claim 1 is characterized in that, the guide face (03) of throttling element (02) is an arc surface in the pipe.
3. flowmeter as claimed in claim 1 is characterized in that, the guide face (03) of throttling element (02) is a hyperboloid in the pipe.
4. flowmeter as claimed in claim 1 is characterized in that, the guide face (03) of throttling element (02) is axisymmetric along self in the pipe.
5. flowmeter as claimed in claim 1, it is characterized in that, the line (AB) of the marginal point (A) of the inner vertex (B) in the longitudinal profile of the cambered surface of the guide face (03) of throttling element (02) and same section in the pipe, the angle of the angle (C) that is become with pipeline member (01) axis (X-X) is spent between the 60 degree scopes 30.
6. as claim 1 or 5 described flowmeters, it is characterized in that, also include left pressure port (04) and right pressure port (05), left side pressure port (04) and right pressure port (05) are separately positioned on the both sides of throttling element (02) in the pipe, and above-mentioned left pressure port (04) and right pressure port (05) are to be symmetrical arranged with respect to throttling element (02) in the pipe.
7. as claim 1 or 5 described flowmeters, it is characterized in that the mode that the interior throttling element (02) of pipe is fixed in the pipeline member (01) is that pipeline is embedded, or welded type, perhaps throttling element (02) and pipeline member (01) are integrative-structures in the pipe.
8. flowmeter as claimed in claim 1 is characterized in that, the two ends of pipeline member (01) have set soldering opening (08,09), be used for being connected with welding manner with Outer Tube, perhaps, the two ends of pipeline member (01) are provided with left flange plate port (06) and right ring flange port (07).
9. a flowmeter is characterized in that, described flowmeter comprises left pipeline member (011), right pipeline member (012), flowmeter nuclear (1), wherein,
Described flowmeter nuclear (1) includes pipeline member (01), throttling element (02) in the pipe, throttling element (02) is installed on the inwall of pipeline member (01) in the pipe, throttling element (02) and the coaxial setting of pipeline member (01) in the pipe, the guide face (03) of throttling element (02) is a cambered surface in the pipe, the line (AB) of the marginal point (A) of the inner vertex (B) in the longitudinal profile of the cambered surface of the guide face (03) of throttling element (02) and same section in the pipe, the angle of the angle (C) that is become with pipeline member (01) axis (X-X) is spent between the 60 degree scopes 30, throttling element (02) is two other parts of branch in pipeline member (01) and the pipe, or integrative-structure
The use that cooperatively interacts of described left pipeline member (011) and right pipeline member (012), has identical interior diameter (D), the side locations that cooperatively interacts at left pipeline member (011) and right pipeline member (012), have annular concave platform (11,12) respectively relatively, described flowmeter nuclear (1) is embedded in the space of annular concave platform (11,12)
Be provided with left pressure port (04) and right pressure port (05) respectively, left flange plate port (06) and right ring flange port (07) on left side pipeline member (011) and the right pipeline member (012); Left flange plate port (06) and right ring flange port (07) are separately positioned on the left end of left pipeline member (011) and the right-hand member of right pipeline member (012),
Flowmeter nuclear (1) is arranged on the middle of left pipeline member (011) and right pipeline member (012), and left pipeline member (011) and right pipeline member (012) are welded together.
10. a flowmeter is characterized in that, described flowmeter comprises flowmeter nuclear (1), left flange plate outer tube body (21), right ring flange outer tube body (22), and left flange plate (31), right ring flange (32), wherein,
Flowmeter nuclear (1) includes pipeline member (01), throttling element (02) in the pipe, throttling element (02) is installed on the inwall of pipeline member (01) in the pipe, throttling element (02) and the coaxial setting of pipeline member (01) in the pipe, the guide face (03) of throttling element (02) is a cambered surface in the pipe, the line (AB) of the marginal point (A) of the inner vertex (B) in the longitudinal profile of the cambered surface of the guide face (03) of throttling element (02) and same section in the pipe, the angle of the angle (C) that is become with pipeline member (01) axis (X-X) is spent between the 60 degree scopes 30, throttling element (02) is two other parts of branch in pipeline member (01) and the pipe, or integrative-structure
Left flange plate outer tube body (21) and right ring flange outer tube body (22) they all are short tube and the structure that is provided with disk in end of short tube, have ring flange connecting hole (4) on the disk, and ring flange connecting hole (4) is a manhole, be used for being connected with Outer Tube,
One end of left flange plate (31) and right ring flange (32) is a pipe end, the other end is the dish end, all has ring flange pressure port (5) on its dish, and ring flange pressure port (5) is thin through hole, the endoporus of ring flange (31,32) is identical with the interior diameter (D) of short tube
The non-disk end of left flange plate outer tube body (21) and coaxial connection of pipe end of left flange plate (31), the non-disk end of right ring flange outer tube body (22) and coaxial connection of pipe end of right ring flange (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200950920U CN201672940U (en) | 2009-12-31 | 2009-12-31 | Flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200950920U CN201672940U (en) | 2009-12-31 | 2009-12-31 | Flowmeter |
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| Publication Number | Publication Date |
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| CN201672940U true CN201672940U (en) | 2010-12-15 |
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| CN2009200950920U Expired - Lifetime CN201672940U (en) | 2009-12-31 | 2009-12-31 | Flowmeter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101750121A (en) * | 2009-12-31 | 2010-06-23 | 上海科洋科技发展有限公司 | Hyperboloid balance flow gauge |
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2009
- 2009-12-31 CN CN2009200950920U patent/CN201672940U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101750121A (en) * | 2009-12-31 | 2010-06-23 | 上海科洋科技发展有限公司 | Hyperboloid balance flow gauge |
| WO2011079820A1 (en) * | 2009-12-31 | 2011-07-07 | 上海科洋科技发展有限公司 | Hyperboloid balance flowmeter |
| CN101750121B (en) * | 2009-12-31 | 2014-03-05 | 上海科洋科技发展有限公司 | Hyperboloid balance flow gauge |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI KEYONTECHS CO., LTD. Free format text: FORMER NAME: SHANGHAI KEYONTECHS DEVELOPMENT CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 200122, room 3, building 1500, Eastern Mansion,, No. 3333 Century Avenue, Shanghai, Pudong Patentee after: SHANGHAI KEYONTECHS CO., LTD. Address before: 200122, room 3, building 1500, Eastern Mansion,, No. 3333 Century Avenue, Shanghai, Pudong Patentee before: Shanghai Keyontechs Development Co., Ltd. |
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| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: Jinshan District Fengjing town 201501 Shanghai Xinghao Road No. 7 Patentee after: SHANGHAI KEYONTECHS CO., LTD. Address before: 200122, room 3, building 1500, Eastern Mansion,, No. 3333 Century Avenue, Shanghai, Pudong Patentee before: SHANGHAI KEYONTECHS CO., LTD. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101215 |