CN214251109U - Gas turbine flowmeter - Google Patents
Gas turbine flowmeter Download PDFInfo
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- CN214251109U CN214251109U CN202120431849.XU CN202120431849U CN214251109U CN 214251109 U CN214251109 U CN 214251109U CN 202120431849 U CN202120431849 U CN 202120431849U CN 214251109 U CN214251109 U CN 214251109U
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- impeller
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- gas turbine
- shell
- flow guide
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Abstract
The utility model relates to a gas turbine flowmeter, which comprises a shell and a flow totalizer arranged on the upper side of the shell, wherein an impeller bracket is fixedly arranged in the shell, a rotation-starting flow guide body is fixedly arranged on one side of the impeller bracket, and a self-balancing unit is arranged on the other side of the impeller bracket; the self-balancing unit comprises an impeller and a flow guide rectifier, wherein one side of the impeller is rotatably connected with an impeller support, the flow guide rectifier is fixedly connected with the impeller support, a cavity for accommodating the impeller is formed between the flow guide rectifier and the impeller support, the impeller is rotatably arranged in the cavity, and the rotation-starting flow guide body is a conical spiral body. The front-mounted rotation starting guide body is utilized to start the entering fluid and blow the entering fluid to the surface of the blade vertically, so that the loss of axial force generated by the blade is reduced, the torque of the turbine is increased, the turbine can rotate to perform metering under the condition that a small air flow passes through, and the metering range of the flowmeter is enlarged.
Description
Technical Field
The utility model relates to a gas table manufacturing technology field, concretely relates to gas turbine flowmeter.
Background
A gas turbine flowmeter is a high-precision meter that measures the flow of gas in a pipe continuously or intermittently. The gas turbine flowmeter consists of a turbine flow sensor and a counting reading unit (volume corrector), belongs to a volumetric metering instrument, and realizes accurate measurement of gas by forming a metering chamber with fixed volume through an impeller and a shell. The rotation of the impeller is accomplished by a specially designed speed reduction mechanism and magnetic coupling (or output flow pulse signal) to accumulate the volume flowing through the metering chamber for metering purposes.
The guide bodies of the gas turbine flowmeter are all linear guide bodies, namely, the gas flow of a medium is vertically blown to the turbine along the axial direction of the inner cavity of the meter body along the linear guide plate, the blades of the turbine incline a certain angle with the direction of the gas flow to convert the axial force of the gas into tangential force so as to drive the turbine to rotate, and because the angle of the impeller and the flow direction of the gas flow have a certain angle, a large part of the axial force cannot be converted into the tangential force, so that the impeller is difficult to drive to rotate under the condition of small gas flow, and the measurement range is difficult to be influenced by the measurement of the small-flow gas.
SUMMERY OF THE UTILITY MODEL
To the not enough of prior art existence, the utility model aims to provide a gas turbine flowmeter.
In order to achieve the above purpose, the utility model provides a following technical scheme: a gas turbine flowmeter comprises a shell and a flow integrating instrument arranged on the upper side of the shell, wherein an impeller bracket is fixedly arranged in the shell, a rotation-starting guide body is fixedly arranged on one side of the impeller bracket, and a self-balancing unit is arranged on the other side of the impeller bracket; the self-balancing unit comprises an impeller and a flow guide rectifier, wherein one side of the impeller is rotationally connected with an impeller support, the flow guide rectifier is fixedly connected with the impeller support, a cavity for accommodating the impeller is formed between the flow guide rectifier and the impeller support, the impeller is rotatably arranged in the cavity, the rotation starting guide body is a conical spiral body which can enable flowing gas to rotate, the front end of the spiral body is arranged to be a conical head, a plurality of spiral grooves are formed in the circumferential direction of the spiral body, and the spiral grooves enable the gas entering the spiral body to rotate.
The spiral flow guiding body comprises a mounting disc and a center rod arranged at the center of the mounting disc, the conical spiral body is fixedly connected with the center rod, and the top end of the center rod is provided with a conical head.
The mounting disc is detachably connected with the impeller support.
The impeller comprises an impeller support and is characterized in that a bearing support is arranged in the impeller support, an impeller bearing and an impeller shaft are arranged on two sides of the bearing support, the impeller shaft penetrates through the impeller bearing, and one end of the impeller shaft extends out of the impeller bearing and is coaxially connected with an impeller.
The front end of the shell is provided with a filtering component.
The filter assembly comprises a filter screen, a fitting piece is arranged in the circumferential direction of the filter screen, a shaft shoulder is arranged on one side of the shell, the fitting piece of the filter screen is arranged in the shaft shoulder, and the inner side of the fitting piece is pressed against the shaft shoulder and is limited by the flange cover.
The flange cover is detachably connected with the shell.
The utility model has the advantages that: the front-mounted rotation starting guide body is utilized to start the entering fluid and blow the entering fluid to the surface of the blade vertically, so that the loss of axial force generated by the blade is reduced, the torque of the turbine is increased, the turbine can rotate to perform metering under the condition that a small air flow passes through, and the metering range of the flowmeter is enlarged.
Drawings
Fig. 1 is a schematic cross-sectional view of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
As shown in the figure, the gas turbine flowmeter comprises a shell 1 and a flow integrating instrument arranged on the upper side of the shell, wherein an impeller bracket is fixedly arranged in the shell, a rotation-starting guide body is fixedly arranged on one side of the impeller bracket, and a self-balancing unit is arranged on the other side of the impeller bracket; the self-balancing unit comprises an impeller and a flow guide rectifier 4, wherein one side of the impeller is rotationally connected with an impeller support, the flow guide rectifier is fixedly connected with the impeller support, a cavity for accommodating an impeller 5 is formed between the flow guide rectifier and the impeller support, the impeller is rotatably arranged in the cavity, the flow guide body is a conical spiral body which can enable flowing gas to rotate, the front end of the spiral body 10 is arranged to be a conical head, a plurality of spiral grooves are circumferentially arranged on the spiral body, and the spiral grooves enable the gas entering the spiral grooves to rotate.
The front-mounted rotation starting guide body is utilized to start the entering fluid and blow the entering fluid to the surface of the blade vertically, so that the loss of axial force generated by the blade is reduced, the torque of the turbine is increased, the turbine can rotate to perform metering under the condition that a small air flow passes through, and the metering range of the flowmeter is enlarged.
The turbine gas flowmeter is provided with the impeller and the flow guide rectifier, and the impeller and the flow guide rectifier are combined to form a pair of kinematic pairs by the impeller and the rear flow guide rectifier, so that a thrust action opposite to the gas flow direction is formed, the one-way dynamic pressure borne by the impeller shaft is reduced, and the service life of the impeller shaft and the rotation precision of the impeller are improved.
The spiral flow guiding body comprises a mounting disc 9 and a center rod arranged at the center of the mounting disc, the conical spiral body is fixedly connected with the center rod, and the top end of the center rod is provided with a conical head.
The mounting disc with impeller support 8 can dismantle the connection, can change preceding whirl guiding body as required, satisfies different places and uses.
The impeller comprises an impeller support and is characterized in that a bearing support 7 is arranged in the impeller support, an impeller bearing and an impeller shaft 6 are arranged on two sides of the bearing support, the impeller shaft penetrates through the impeller bearing, and one end of the impeller shaft extends out of the impeller bearing and is coaxially connected with an impeller.
The front end of the shell is provided with a filtering component.
When the gas flows through the flow meter, firstly, the gas passes through the filtering component, impurities in the gas can be removed by the filtering component, the impeller, the front bearing and the rear bearing are prevented from being damaged by the impurities, then, the filtered gas is rectified and accelerated under the action of the rotating guide body and acts on blades of the impeller, and the impeller rotates under the action of the gas.
The filter component 3 comprises a filter screen, a fitting piece is arranged in the circumferential direction of the filter screen, a shaft shoulder is arranged on one side of the shell, the fitting piece of the filter screen is arranged in the shaft shoulder, and the inner side of the fitting piece is pressed against the shaft shoulder and is limited by the flange cover. The fitting is pressed against the inside of the shoulder by the flange cover 2 and fixed, ensuring the installation reliability of the filter assembly.
The flange cover and the shell are detachably connected, and the filter assembly is cleaned through the detached flange cover.
The examples should not be construed as limiting the present invention, but any modifications made based on the spirit of the present invention should be within the scope of the present invention.
Claims (7)
1. The utility model provides a gas turbine flowmeter, its includes the casing, and install the flow totalizer of casing upside, its characterized in that: an impeller support is fixedly arranged in the shell, a rotation-starting guide body is fixedly arranged on one side of the impeller support, and a self-balancing unit is arranged on the other side of the impeller support; the self-balancing unit comprises an impeller and a flow guide rectifier, wherein one side of the impeller is rotationally connected with an impeller support, the flow guide rectifier is fixedly connected with the impeller support, a cavity for accommodating the impeller is formed between the flow guide rectifier and the impeller support, the impeller is rotatably arranged in the cavity, the rotation starting guide body is a conical spiral body which can enable flowing gas to rotate, the front end of the spiral body is arranged to be a conical head, a plurality of spiral grooves are formed in the circumferential direction of the spiral body, and the spiral grooves enable the gas entering the spiral body to rotate.
2. A gas turbine flow meter according to claim 1, wherein: the spiral flow guiding body comprises a mounting disc and a center rod arranged at the center of the mounting disc, the conical spiral body is fixedly connected with the center rod, and the top end of the center rod is provided with a conical head.
3. A gas turbine flow meter according to claim 2, wherein: the mounting disc is detachably connected with the impeller support.
4. A gas turbine flow meter according to claim 1, wherein: the impeller comprises an impeller support and is characterized in that a bearing support is arranged in the impeller support, an impeller bearing and an impeller shaft are arranged on two sides of the bearing support, the impeller shaft penetrates through the impeller bearing, and one end of the impeller shaft extends out of the impeller bearing and is coaxially connected with an impeller.
5. A gas turbine flow meter according to claim 1, wherein: the front end of the shell is provided with a filtering component.
6. A gas turbine flow meter according to claim 5, wherein: the filter assembly comprises a filter screen, a fitting piece is arranged in the circumferential direction of the filter screen, a shaft shoulder is arranged on one side of the shell, the fitting piece of the filter screen is arranged in the shaft shoulder, and the inner side of the fitting piece is pressed against the shaft shoulder and is limited by the flange cover.
7. A gas turbine flow meter according to claim 6, wherein: the flange cover is detachably connected with the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120431849.XU CN214251109U (en) | 2021-03-01 | 2021-03-01 | Gas turbine flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120431849.XU CN214251109U (en) | 2021-03-01 | 2021-03-01 | Gas turbine flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214251109U true CN214251109U (en) | 2021-09-21 |
Family
ID=77727211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120431849.XU Active CN214251109U (en) | 2021-03-01 | 2021-03-01 | Gas turbine flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214251109U (en) |
-
2021
- 2021-03-01 CN CN202120431849.XU patent/CN214251109U/en active Active
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