CN116952312A - High pressure-bearing type gas turbine flowmeter - Google Patents
High pressure-bearing type gas turbine flowmeter Download PDFInfo
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- CN116952312A CN116952312A CN202310960611.XA CN202310960611A CN116952312A CN 116952312 A CN116952312 A CN 116952312A CN 202310960611 A CN202310960611 A CN 202310960611A CN 116952312 A CN116952312 A CN 116952312A
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- 238000009423 ventilation Methods 0.000 claims abstract description 73
- 230000009471 action Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 7
- 230000001133 acceleration Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- 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
- G01F1/28—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 by drag-force, e.g. vane type or impact flowmeter
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- Physics & Mathematics (AREA)
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- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The application discloses a high-pressure-bearing gas turbine flowmeter, which comprises a shell, wherein an impeller for measuring gas flow is arranged in the shell, a ventilation seat for allowing gas to pass through is also arranged in the shell, the ventilation seat comprises a first end and a second end, a gas passing channel for communicating the first end and the second end is arranged on the ventilation seat, the cross-sectional area of the gas inlet end of the gas passing channel is larger than the cross-sectional area of the gas outlet end of the gas passing channel, and the impeller is arranged on the second end of the ventilation seat. Under the action of the ventilation seat, the gas in the shell flows through the gas passing channel in the ventilation seat, and the cross-sectional area of the gas inlet end of the gas passing channel is larger than the cross-sectional area of the gas outlet end of the gas passing channel, and the impeller is arranged at one end of the ventilation seat corresponding to the gas outlet end of the gas passing channel, so that the ventilation seat has the effect of increasing the gas flow rate, the gas flow rate of the impact impeller is further enabled to be larger, the impact force of the gas on the impeller can be effectively increased, the effective rotation of the impeller is further ensured, and the metering precision of the gas flow is improved.
Description
Technical Field
The application relates to the technical field of flowmeters, in particular to a high-pressure-bearing gas turbine flowmeter.
Background
The gas turbine flowmeter is a velocity type flowmeter, is installed on a gas flow pipeline and is used for measuring gas flow, and the structure of the existing gas turbine flowmeter is shown in the figure: the gas flow meter comprises a sleeve 1-1, wherein the sleeve 1-1 is connected in series in a gas flow pipeline in use, an impeller 1-2 is arranged in the sleeve 1-1, when flowing gas passes through the sleeve 1-1, the impeller 1-2 is impacted by the gas, so that the impeller 1-2 rotates, the rotation speed of the impeller 1-2 is in direct proportion to the gas flow passing through the sleeve 1-1, a sensor 1-3 is further arranged on the outer side of the sleeve 1-1, the sensor 1-3 is used for measuring the rotation speed of the impeller 1-2, the gas flow passing through the sleeve 1-1 can be measured, the purpose of measurement is achieved, in addition, flange pieces 1-4 are respectively arranged at two ends of the sleeve 1-1, the flange pieces 1-4 are connected with the gas flow pipeline, the local connection strength is further increased, the tightness is improved, the use is safer, a guide piece 1-5 is arranged in front of the impeller 1-2, the impeller 1-2 is arranged on the guide piece 1-5, the guide piece 1-5 is arranged on the inner wall of the sleeve 1-1, the guide piece 1-5 is arranged on the sleeve 1-1, the guide piece and the guide piece 1-2 is directly parallel to the axial direction of the sleeve 1-1, but the structure of the gas flow meter is in fact that the flow meter is in the process of the practical use, and the structure is as the flow meter is as follows: when the gas turbine flowmeter is to achieve the premise of metering, the impeller 1-2 rotates, namely the impact force of the gas on the impeller 1-2 reaches a certain strength, the density of the gas is relatively smaller, and especially when the flow rate of the gas in the gas flowing pipeline is smaller, the impact force of the gas on the impeller 1-2 does not reach the expected strength, and the impeller cannot be driven to rotate, so that a certain error exists in actual metering, and the metering precision of the gas turbine flowmeter is affected.
Disclosure of Invention
The application aims to avoid the defects of the prior art and provides a high-pressure-bearing gas turbine flowmeter, so that the defects in the prior art are effectively overcome.
In order to achieve the above purpose, the technical scheme adopted by the application is as follows: the utility model provides a high pressure-bearing gas turbine flowmeter, includes the shell, the inside of shell is provided with the impeller that is used for measuring gas flow, and gas is rotatory in the shell body when passing, and the gas is strike the impeller, still is provided with the seat of ventilating that the gas passed through in the shell, the seat of ventilating includes first end and second end, is provided with the gas passageway that crosses that communicates first end and second end on the seat of ventilating, the one end that the gas passageway corresponds the seat of ventilating first end is the inlet end, and the gas passageway corresponds the one end of the seat second end of ventilating and is the end of giving vent to anger, and the cross-sectional area of the inlet end of gas passageway is greater than the cross-sectional area of the outlet end of gas passageway of crossing, the impeller sets up on the second end of the seat of ventilating, and the gas of giving vent to anger end blowout is strike the impeller in order to make the impeller rotate.
Further, the inner cavity of the shell is in a columnar shape, the shape of the ventilation seat is matched with the inner cavity of the shell, and the axial direction of the ventilation seat is parallel to the flowing direction of gas in the shell.
Further, the cross-sectional area of the overgas passage is continuously variable.
Further, the air passage comprises a front section and a rear section, the front section and the rear section are communicated, the front end of the front section corresponds to the air inlet end of the air passage, the rear end of the rear section corresponds to the air outlet end of the air passage, the rear end of the front end is connected with the front end of the rear section, the cross-sectional area of the front end of the front section is larger than that of the rear end of the front section, and the cross-sectional area of the front end of the rear section is larger than that of the rear end of the rear section.
Further, a column seat is arranged in the region, corresponding to the rear section, of the inside of the ventilation seat, and a gap is formed between the column seat and the region, corresponding to the ventilation seat, so that the rear section of the ventilation channel is formed.
Further, the inner cavity of the rear section and the column base are all in a conical shape, the small head end of the rear section is the front end of the rear section, the big head end of the rear section is the rear end of the rear section, the small head end of the column base corresponds to the front end of the rear section, and the big head end of the column base corresponds to the rear end of the rear section.
Further, the front section of the air passage is in a conical shape, the big head end of the air passage corresponds to the front end of the front section, and the small head end of the air passage corresponds to the rear end of the front section.
Further, the inner wall of the rear section and the outer wall of the column base are arranged in an arc shape along the gas flowing direction.
Further, the impeller comprises a shaft seat, a plurality of blades are arranged on the shaft seat, the blades are provided with a first surface and a second surface, the first surface faces the direction of the gas, the second surface faces away from the direction of the gas, and when the gas impacts the blades, the impeller is further enabled to rotate.
Further, the first face and the second face are both arc-shaped, and are both bent towards the rotation direction of the impeller.
The technical scheme of the application has the following beneficial effects: under the action of the ventilation seat, the gas in the shell flows through the gas passing channel in the ventilation seat, and the cross-sectional area of the gas inlet end of the gas passing channel is larger than the cross-sectional area of the gas outlet end of the gas passing channel, and the impeller is arranged at one end of the ventilation seat corresponding to the gas outlet end of the gas passing channel, so that the ventilation seat has the effect of increasing the gas flow rate, the gas flow rate of the impact impeller is further enabled to be larger, the impact force of the gas on the impeller can be effectively increased, the effective rotation of the impeller is further ensured, and the metering precision of the gas flow is improved.
Drawings
FIG. 1 is a schematic diagram of a prior art gas turbine flow meter;
FIG. 2 is a schematic diagram of a high pressure-bearing gas turbine flowmeter according to an embodiment of the present application;
FIG. 3 is a cross-sectional view of a high pressure gas turbine flow meter according to an embodiment of the present application;
FIG. 4 is an enlarged view of a portion of FIG. 3 at A;
FIG. 5 is an exploded view of a high pressure gas turbine flowmeter according to an embodiment of the present application;
FIG. 6 is a cross-sectional view of a vent seat provided in an embodiment of the application;
FIG. 7 is a cross-sectional view of a vent seat and post seat mating provided by an embodiment of the present application;
FIG. 8 is a schematic diagram of the structure of the column base, the stopper and the impeller according to the embodiment of the present application;
FIG. 9 is a cross-sectional view of a housing and flange engagement provided by an embodiment of the present application;
fig. 10 is a partial enlarged view at B in fig. 9.
Detailed Description
Embodiments of the present application are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the application but are not intended to limit the scope of the application.
In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as directions or positional relationships based on those shown in the drawings, merely to facilitate description of the application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the application, but it is possible for those of ordinary skill in the art to understand the specific meaning of the terms in this application in a specific case.
As shown in fig. 2-10, the high pressure-bearing gas turbine flowmeter according to the present embodiment is used for measuring the flow rate of gas in a gas flow pipe, and when the high pressure-bearing gas turbine flowmeter is used in series in the gas flow pipe, specifically, the high pressure-bearing gas turbine flowmeter includes a housing 1, the housing 1 has an internal cavity, an impeller for measuring the flow rate of gas is provided in the housing 1, in practice, when the gas in the gas flow pipe flows through the internal cavity of the housing 1, the gas impacts the impeller to drive the impeller to rotate, in addition, a measuring sensor 2 for measuring the rotation speed of the impeller is provided outside the housing 1, the position of the measuring sensor 2 corresponds to the position of the impeller to measure the rotation speed of the impeller, when the flowing gas impacts the impeller, the rotation speed of the impeller is in proportion to the flow rate of the flowing gas, the flow rate of the flowing gas can be measured to achieve the measurement purpose, more specifically, a ventilation seat 3 through which the flowing gas passes is arranged in the shell 1, the ventilation seat 3 is arranged in an inner cavity of the shell 1, more specifically, the ventilation seat 3 is provided with a first end 4 and a second end 5, after the actual installation is finished, the first end 4 is positioned in the upstream direction of the second end 5 in the flowing direction of the gas, more specifically, an air passage is arranged on the ventilation seat 3, the air passage is communicated with the first end 4 and the second end 5 which penetrate through the ventilation seat 3, a through cavity is formed on the ventilation seat 3, the air passage is provided with an air inlet end and an air outlet end, the air inlet end of the air passage corresponds to the first end 4 of the ventilation seat 3, the air outlet end of the air passage corresponds to the second end 5 of the ventilation seat 3, the cross-section area of the air inlet end of the air passage is larger than the cross-section area of the air outlet end of the air passage, and the impeller is arranged at the second end 5 of the ventilation seat 3, and the gas sprayed out of the gas outlet end of the gas passing channel impacts the impeller to enable the impeller to rotate, so that when the gas flows through the ventilation seat 3, the flow speed of the gas can be increased when the gas flows from the gas inlet end of the gas passing channel to the gas outlet end, and when the flow speed of the gas in the gas flowing pipeline is slower, the gas flowing out of the gas outlet end of the gas passing channel can still keep a considerable speed, so that the impact force of the gas on the impeller can be effectively increased, the impeller can effectively rotate, the phenomenon that the impeller does not rotate when the flow speed of the gas is lower is restrained, and the metering precision is favorably improved.
In the embodiment of the application, the internal cavity of the shell 1 is in a columnar shape, the shape of the ventilation seat 3 and the internal shape of the shell 1 are mutually matched, the axial direction of the ventilation seat 3 and the circulation direction of gas in the shell 1 are mutually parallel, so that the cavity wall contacted with the gas avoids structures such as corners and the like and avoids influencing the flow rate of the gas, the cross-sectional area of the gas passing channel is continuously changed, in particular, the internal cross-sectional area of the gas passing channel is gradually reduced along the circulation direction of the gas, namely along the direction from the gas inlet end to the gas outlet end, the flow rate of the gas is gradually increased, the impact force on the impeller is improved, more particularly, the gas passing channel comprises a front section 6 and a rear section 7, the front section 6 and the rear section 7 of the gas passing channel are in transitional connection and are communicated, the front end of the front section 6 corresponds to the gas inlet end of the gas passing channel, the rear end of the rear section 7 corresponds to the gas outlet end of the gas passing channel, the rear end of the front end is connected with the front end of the rear section 7, the cross-sectional area of the front end of the front section 6 is larger than the cross-sectional area of the rear end of the front section 6, the cross-sectional area of the front end of the rear section 7 is larger than the cross-sectional area of the rear end of the rear section 7, in the embodiment of the application, along the air flowing direction, namely along the direction from the first end 4 to the second end 5 of the ventilation seat 3, the cross-sectional area of the inner cavity of the front section 6 is gradually and continuously reduced, the cross-sectional area of the inner cavity of the rear section 7 is gradually and continuously reduced, the continuous acceleration of the flowing gas passing through the front section 6 and the rear section 7 is carried out so as to improve the flow velocity of the gas impacting on the impeller, so that the impeller effectively rotates, more particularly, for the structural forms of the front section 6 and the rear section 7 of the passing gas channel, a column seat 8 is preferably arranged in the area corresponding to the rear section 7 inside the ventilation seat 3, the clearance is formed between the inner chamber wall of post holder 8 and the seat 3 that ventilates, this clearance forms the back end 7 of air passage promptly, specifically, the inside cavity and the post holder 8 of the regional corresponding back end 7 of seat 3 of ventilate all are the taper setting, the tip of back end 7 is its front end, the tip of back end 7 is the rear end, the tip of post holder 8 corresponds the front end of back end 7, the tip of post holder 8 corresponds the rear end of back end 7, moreover, the virtual axis of the inside cavity of the corresponding back end 7 of seat 3 of ventilate and the virtual axis coincidence of post holder 8, and then make the back end 7 form the ring cross-section form of diffusion, form loudspeaker wall form, and, in the clearance between this region of seat 3 of ventilating, the clearance is gradually reduced along the flow direction of gas, so that accelerates gas, the inner wall in the regional inner wall of post holder 3 of seat 7 and the outer wall of post holder 8 are the arc setting along the gas circulation direction, the second end 5 of post holder 3 is close to, the post holder 8 and the clearance between this region of seat 3 tend to the direction of the back end 3 and the axis of the seat 3 of ventilating also tends to make the impeller and the axis of the impeller 7 of ventilating in parallel direction when the direction of the back end 3 of ventilating and the impeller that the impeller is parallel to the direction of the impeller of the air more perpendicular to the direction of the air.
In the embodiment of the application, the front section 6 of the gas passing channel is arranged in a cone shape, the big end of the gas passing channel corresponds to the front end of the front section 6, and the small end of the gas passing channel corresponds to the rear end of the front section 6, so that a gas line flowing through the ventilation seat 3 is continuously and uniformly accelerated through the conical front section 6, and then is accelerated through the diffused circular ring section-shaped rear section 7, so that an effective impact area of the gas tends to be outwards diffused, and the effect is further explained when the impeller structure is introduced later.
In the embodiment of the application, the impeller comprises a shaft seat 9, the shaft seat 9 is arranged on the big end of the column seat 8, a plurality of blades 10 are arranged on the shaft seat 9, the axial direction of the shaft seat 9 is overlapped with the axial direction of the column seat 8, so that the rotation direction of the blades 10 is perpendicular to the flow direction of the air, the blades 10 are provided with a first surface 11 and a second surface 12, the first surface 11 faces towards the air, the second surface 12 faces away from the air, namely, the air sprayed by the ventilation seat 3 impacts the first surface 11 of the blades 10, the first surface 11 and the second surface 12 are obliquely arranged, in the rotation direction of the impeller, the second surface 12 faces towards the rotation circumferential direction of the impeller, the first surface 11 faces away from the rotation circumferential direction of the impeller, namely, when the impeller rotates, the second surface 12 is positioned in the front, the first surface 11 is positioned at the rear, and the embodiment, the blade 10 has a twisted posture as a whole, for the area of the blade 10 close to the shaft seat 9, the first face 11 and the second face 12 of the blade 10 are oriented more towards the rotation circumferential direction of the impeller, but for the area where the gas is sprayed out from the rear end of the rear section 7, namely, the tail end of the blade 10 tends to be inclined at a certain angle, for the area where the first face 11 and the second face 12 of the blade 10 are locally, so that the gas impacts the first face 11 to apply the impact force of circumferential rotation to the first face 11, the impact force of the gas applies on the one hand to the axial force to the first face 11, and applies on the other hand to the first face 11 to apply circumferential tangential force to the blade 10 to apply circumferential force to the blade 10 to enable the impeller to rotate, in the embodiment of the application, the rear end of the rear section 7 corresponds to the position of the blade 10 to enable the gas sprayed out from the rear end of the rear section 7 to be sprayed onto the blade 10, the effective impact area of the gas tends to spread outwards, so that the impact force point of the gas on the blade 10 is closer to the movable end tail end of the blade 10, the moment on the blade 10 is increased, and the rotation of the impeller is facilitated.
More specifically, the first surface 11 and the second surface 12 of the blade 10 are all arc-shaped, and are curved towards the direction of rotation of the blade, and the two sides of the first surface 11 and the two sides of the second surface 12 are all in transitional connection and enclose the cross section of the blade 10, and the two sides of the first surface 11 and the two sides of the second surface 12 are of round corner structures, so that gas can smoothly blow through the blade 10, further, the first surface 11 and the second surface 12 arch towards the rotation direction of the blade 10, that is, the first surface 11 arch towards the inside of the blade 10, so that the first surface 11 is formed into a concave surface, the second surface 12 arch towards the direction away from the blade 10, so that the second surface 12 is formed into a convex surface, and the length of the second surface 12 is greater than the length of the first surface 11 on the cross section of the blade 10, so that when gas blows through the blade 10, the stroke length of gas on the second surface 12 is greater than the stroke length on the first surface 11, so that the gas flow rate on the second surface 12 can be greater than the gas flow rate on the first surface 11, according to the Bernoulli principle, the pressure at the second surface 12 is smaller than the pressure at the first surface 11, so that the pressure difference between the blade 10 and the second surface 11 is more beneficial to the improvement of the rotation accuracy.
More specifically, for the clearance between the region of the back section 7 corresponding to the ventilation seat 3 and the column seat 8, a stop block 13 is arranged in the clearance, one side of the stop block 13 is connected with the inner wall of the region of the ventilation seat 3, the other side of the stop block 13 is connected with the outer wall of the column seat 8 so as to realize the connection between the ventilation seat 3 and the column seat 8, a plurality of ventilation grooves 14 are circumferentially arranged in the stop block 13, and then a plurality of ventilation grooves 14 are formed in the clearance, and the ventilation grooves 14 are of a through structure along the flowing direction of the gas, and further, the width of the ventilation grooves 14 is gradually reduced, so that the gas can be further accelerated when passing through the ventilation grooves 14, the gas flow rate impacting on the blades 10 is further improved, and the rotation of the impeller is facilitated.
More specifically, for the ventilation seat 3 and the impeller arranged in the casing 1, the ventilation seat 3 is detachably arranged in the casing 1, specifically, the outer wall of the ventilation seat 3 is matched with the inner wall of the casing 1, a convex ring 15 is arranged at one end of the inner wall of the casing 1, the ventilation seat 3 can be matched to the inner cavity of the casing 1 along the other end of the casing 1, the convex ring 15 limits the ventilation seat 3 to be separated from the end, the two ends of the casing 1 can be respectively provided with a flange 16, the flange 16 and the casing 1 can be connected through welding or through screws, a convex edge 17 is arranged on the flange 16 at the other end opposite to the end provided with the convex ring 15, the convex edge 17 can extend into the casing 1 and abut against the end of the ventilation seat 3, further, the ventilation seat 3 and the casing 1 can be matched in a threaded mode, the ventilation seat 3 is screwed into the casing 1, one end of the ventilation seat 3 abuts against the convex ring 15, then the flange 16 is arranged on the flange 16 at the other end opposite to the end provided with the convex edge 17, the ventilation seat 3 can be further matched with the flange 3, and the ventilation seat 3 can be further screwed, the ventilation seat 3 can be further fixed, and the ventilation seat 3 can be further, the ventilation seat 3 can be screwed into the ventilation seat 3 through the flange 3.
The working principle of the application is as follows: in practice, the ventilation seat 3 is firstly axially adapted to the inner cavity of the ventilation seat 3, so that the second end 5 of the ventilation seat 3 abuts against the side surface of the convex ring 15, at this time, the blade 10 will not contact with the inner wall of the convex ring 15, a tiny gap is formed between the tail end of the blade 10 and the inner wall of the convex ring 15, so as to avoid excessive gas from flowing through the local part, improve the impact force to the blade 10, then a flange 16 is arranged on the shell 1 corresponding to the end of the first end 4 of the ventilation seat 3, a convex edge 17 on the flange 16 abuts against the first end 4 of the ventilation seat 3, if a tooth matching structure is formed between the convex edge 17 and the ventilation seat 3, so that the tooth matching structure is matched, the flange 16 and the shell 1 can be connected through welding or through screws, then set up ring flange 16 equally at the other end, then connect shell 1 series connection on the gas circulation pipeline through the connected mode of ring flange 16, can effectual increase local pressure-bearing, do benefit to and operate under the high pressure-bearing operating mode, after the installation, make the first end 4 of ventilate seat 3 correspond gaseous upstream, the second end 5 of ventilate seat 3 corresponds gaseous low reaches, the installation is accomplished promptly, when gas flow shell 1 is inside, gaseous front segment 6 of the passageway of passing through in the ventilate seat 3 earlier, front segment 6 is the taper of shrink, and then make gas be accelerated in front segment 6, then gaseous through back segment 7, back segment 7 is same to gas acceleration, the acceleration of back segment 7 is in two aspects, on the one hand: the clearance between this local cavity inner wall of seat 3 and the column base 8 outer wall of ventilating reduces gradually for the effective cross-sectional area in clearance is the trend of reducing along the circulation direction of gas, and then realizes the acceleration to gas, and on the other hand is: due to the ventilation grooves 14 formed by the baffle blocks 13, the width of the ventilation grooves 14 is gradually reduced along the flowing direction of the gas, so that the acceleration of the gas is realized, the impact force of the gas on the blades 10 is increased, the efficient rotation of the impeller is facilitated, in addition, due to the sectional structure of the blades 10, the rotation acting force is directly applied to the blades 10 when the gas impacts the first surface 11, due to the arc shape of the first surface 11 and the second surface 12, the path length of the gas flowing through the second surface 12 is larger than that of the gas flowing through the first surface 11, the pressure at the second surface 12 is smaller than that at the second surface 12, the pressure difference is generated at two sides of the blades 10, and the rotation circumferential acting force is applied to the blades 10 by the pressure difference, so that the rotation of the impeller is facilitated.
It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
It should be readily understood that the terms "on … …", "above … …" and "above … …" in this disclosure should be interpreted in the broadest sense such that "on … …" means not only "directly on something", but also includes "on something" with intermediate features or layers therebetween, and "above … …" or "above … …" includes not only the meaning "on something" or "above" but also the meaning "above something" or "above" without intermediate features or layers therebetween (i.e., directly on something).
Further, spatially relative terms, such as "below," "beneath," "above," "over," and the like, may be used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.
Claims (10)
1. A high pressure-bearing gas turbine flowmeter, characterized in that: including the shell, the inside of shell is provided with the impeller that is used for measuring gas flow, and gas is rotatory in the shell body when passing through, and the gas impact impeller is rotatory, still is provided with the seat of ventilating that gas passed through in the shell, the seat of ventilating includes first end and second end, is provided with the gas passageway that crosses that communicates first end and second end on the seat of ventilating, the one end that the gas passageway corresponds the seat of ventilating first end is the inlet end, and the one end that the gas passageway corresponds the seat of ventilating second end is the outlet end, and the cross-sectional area of the inlet end of gas passageway is greater than the cross-sectional area of the outlet end of gas passageway, the impeller sets up on the second end of the seat of ventilating, in gas passageway outlet end spun gas impact impeller so that the impeller rotates.
2. A high pressure gas turbine flow meter as claimed in claim 1, wherein: the inner cavity of the shell is columnar, the shape of the ventilation seat is matched with the inner cavity of the shell, and the axial direction of the ventilation seat is parallel to the flow direction of gas in the shell.
3. A high pressure gas turbine flow meter as claimed in claim 2, wherein: the cross-sectional area of the overgas passage is continuously variable.
4. A high pressure gas turbine flow meter as claimed in claim 3, wherein: the air passage comprises a front section and a rear section, wherein the front section is communicated with the rear section, the front end of the front section corresponds to the air inlet end of the air passage, the rear end of the rear section corresponds to the air outlet end of the air passage, the rear end of the front section is connected with the front end of the rear section, the cross-sectional area of the front end of the front section is larger than that of the rear end of the front section, and the cross-sectional area of the front end of the rear section is larger than that of the rear end of the rear section.
5. A high pressure gas turbine flow meter as claimed in claim 4, wherein: the region of the inside corresponding back section of the ventilation seat is provided with a column seat, and a gap is formed between the column seat and the region corresponding to the ventilation seat so as to form the back section of the ventilation channel.
6. A high pressure gas turbine flow meter as defined in claim 5, wherein: the ventilation seat corresponds to the inner cavity of the rear section area and the column seat are both arranged in a conical shape, the small head end of the rear section is the front end of the ventilation seat, the big head end of the rear section is the rear end of the ventilation seat, the small head end of the column seat corresponds to the front end of the rear section, and the big head end of the column seat corresponds to the rear end of the rear section.
7. A high pressure gas turbine flow meter as defined in claim 6, wherein: the front section of the air passage is in a conical shape, the big end of the air passage corresponds to the front end of the front section, and the small end of the air passage corresponds to the rear end of the front section.
8. A high pressure gas turbine flow meter as claimed in claim 7, wherein: the inner wall of the ventilation seat corresponding to the rear section area and the outer wall of the column seat are arranged in an arc shape along the air circulation direction.
9. A high pressure gas turbine flow meter as claimed in claim 1, wherein: the impeller comprises an axle seat, a plurality of blades are arranged on the axle seat, each blade is provided with a first surface and a second surface, the first surface faces the direction of gas, the second surface faces away from the direction of gas, and when the gas impacts the blades, the impeller is further enabled to rotate.
10. A high pressure gas turbine flow meter as claimed in claim 9, wherein: the first face and the second face are all arc-shaped, and are all bent towards the direction of impeller rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310960611.XA CN116952312A (en) | 2023-08-02 | 2023-08-02 | High pressure-bearing type gas turbine flowmeter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310960611.XA CN116952312A (en) | 2023-08-02 | 2023-08-02 | High pressure-bearing type gas turbine flowmeter |
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| CN116952312A true CN116952312A (en) | 2023-10-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117490782A (en) * | 2023-12-29 | 2024-02-02 | 福建哈德仪表有限公司 | Turbine flowmeter capable of preventing magnetic interference |
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2023
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117490782A (en) * | 2023-12-29 | 2024-02-02 | 福建哈德仪表有限公司 | Turbine flowmeter capable of preventing magnetic interference |
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