Turbine flowmeter for measuring pulsating flow
By designing a pulsating buffer device in a turbine flowmeter to buffer the pulsating power of the fluid, the problem of inaccurate measurement when measuring the pulsating fluid is solved, and higher measurement accuracy is achieved.
Patent Information
- Application Number
- CN202421211706.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-05-30
AI Technical Summary
When measuring pulsating fluid, existing turbine flowmeters cannot effectively attenuate the pulsating pressure of the fluid, resulting in inaccurate measurement results.
A turbine flowmeter including a flowmeter connector and a worm gear flowmeter body is designed, and a pulsating buffer device consisting of a fixed seat, a horizontal buffer assembly and a vertical buffer assembly are used to buffer the horizontal and vertical pulsating force of the fluid through components such as the transverse slide rod, a transverse spring and a vertical buffer plate to reduce the pulsating pressure.
It effectively attenuates the pulsating pressure of the fluid when flowing in the flowmeter connection head, so that the fluid passes through the worm gear flowmeter body more smoothly, improving the accuracy of the measurement results of the pulsating fluid.
Smart Images
Figure CN222635543U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of turbine flowmeters, and in particular to a turbine flowmeter for measuring pulsating flow. Background Art
[0002] The turbine flowmeter is a velocity flow meter with temperature and pressure compensation functions. It is a type of velocity flowmeter. Its working principle is: the power of the flowing fluid drives the turbine blades to rotate, and its rotation speed is approximately proportional to the volume flow rate. The fluid volume indication through the flowmeter is based on the number of revolutions of the turbine impeller. Turbine flowmeters are widely used in the fields of petroleum, chemical industry, electric power, gas pipeline network, city gas, etc. due to their high measurement accuracy, good repeatability and stability, wide measuring range, rapid response to flow changes, strong anti-interference ability, and easy signal transmission. After searching, the patent document with authorization announcement number CN214667021U announced a turbine flowmeter for measuring micro-processes, including a test tube, a magneto-electric induction converter and a main shaft; the magneto-electric induction converter is installed in the middle of the upper end of the outer side surface of the test tube, and an equipment box is installed at the middle rear end of the outer side surface of the test tube, and an oil storage cylinder is provided on the inner side surface of the equipment box, and hydraulic oil is provided inside the oil storage cylinder. A sealing plug is provided at the end of the inner side surface of the oil storage cylinder, and a pressure rod is provided in the middle of the outer side surface of the sealing plug. The turbine flowmeter for measuring micro-processes can adjust the flow rate of the liquid in the test tube by adjusting the size of the jet gap, thereby effectively increasing the rotation speed of the turbine, and combined with the K value corresponding to different jet gaps, the flow rate of the micro-process liquid can be accurately measured, and the hydraulic oil inside the oil storage cylinder can be accurately injected into the inside of the hydraulic telescopic rod by adjusting the extension and contraction of the electric telescopic rod, and the rotation of the rotating blade can be accurately controlled by controlling the extension and contraction of the hydraulic telescopic rod.
[0003] In actual use, it was found that the above-mentioned related schemes still have at least the following shortcomings: when the fluid transported in the pipeline forms a periodically changing flow state (i.e., pulsating fluid) due to unstable speed or pressure, it is not suitable for effective measurement of the flow rate of the pulsating fluid, resulting in a relatively large measurement error of the pulsating fluid flow rate and an inaccurate measurement structure.
[0004] Therefore, we propose a turbine flowmeter for measuring pulsating flow to solve the above problems. Utility Model Content
[0005] The purpose of the present application is to provide a turbine flowmeter for measuring pulsating flow, which has the effect of effectively attenuating the pulsating pressure of the fluid when it flows in the flowmeter connector, allowing the fluid to pass through the worm wheel flowmeter body more smoothly, thereby improving the accuracy of the pulsating fluid measurement results.
[0006] The above-mentioned technical purpose of the present application is achieved through the following technical solutions: a turbine flowmeter for measuring pulsating flow, comprising a flowmeter connector and a worm gear flowmeter body, wherein the worm gear flowmeter body is fixedly mounted on the flowmeter connector, and positioning rods are fixedly mounted on the top inner wall and the bottom inner wall of the flowmeter connector, and pulsation buffer devices are arranged on the two positioning rods, and the pulsation buffer devices are used to attenuate the pulsating pressure of the fluid when it flows in the flowmeter connector.
[0007] The present application is further configured as follows: the pulsation buffer device includes a fixed seat, a horizontal buffer assembly and a vertical buffer assembly; the top and bottom of the fixed seat are respectively fixedly connected to one end of the two positioning rods close to each other; the horizontal buffer assembly includes multiple transverse slide bars, multiple transverse springs and multiple vertical buffer plates; a side of the fixed seat away from the worm flowmeter body is provided with multiple transverse slide grooves distributed in annular shapes with equal intervals; one ends of the multiple transverse slide bars are respectively slidably installed in the corresponding transverse slide grooves; one ends of the multiple transverse springs are respectively fixedly connected to one end of the corresponding transverse slide bar located in the transverse slide groove; the other ends of the multiple transverse springs are respectively fixedly connected to one side inner wall of the corresponding transverse slide groove; and the multiple vertical buffer plates are respectively fixedly installed on the end of the corresponding transverse slide bar away from the fixed seat.
[0008] The present application is further configured as follows: a first guide groove is provided on the top inner wall and the bottom inner wall of the transverse slide groove, a first guide block is fixedly installed on the top and bottom of the transverse slide rod, and two first guide blocks are respectively slidably installed in the corresponding first guide grooves.
[0009] The present application is further configured as follows: a first sealing ring is fixedly mounted on the inner wall of the transverse slide groove, and the transverse slide rod is slidably and sealingly matched with the transverse slide groove via the first sealing ring.
[0010] The present application is further configured as follows: the vertical buffer assembly includes multiple vertical sliding rods, multiple vertical springs and multiple inclined buffer plates, a vertical sliding groove is opened on one side of the multiple vertical buffer plates, one end of the multiple vertical sliding rods is respectively slidably installed in the corresponding vertical sliding grooves, one end of the multiple vertical springs is respectively fixedly connected to one end of the corresponding vertical sliding rod located in the corresponding vertical sliding groove, the other ends of the multiple vertical springs are respectively fixedly connected to one side inner wall of the corresponding vertical sliding groove, and the multiple inclined buffer plates are respectively fixedly installed on one end of the corresponding vertical sliding rod located outside the vertical sliding groove.
[0011] The present application is further configured as follows: second guide grooves are provided on both inner walls of the vertical slide grooves, second guide blocks are fixedly installed on both sides of the vertical slide rod, and the two second guide blocks are respectively slidably installed in the corresponding second guide grooves.
[0012] The present application is further configured as follows: a second sealing ring is fixedly mounted on the inner wall of the vertical slide groove, and the vertical slide rod is slidably and sealingly matched with the vertical slide groove via the second sealing ring.
[0013] The present application includes at least one of the following beneficial technical effects:
[0014] 1. The present application utilizes a horizontal buffer assembly composed of multiple horizontal slide bars, multiple horizontal springs and multiple vertical buffer plates to buffer and unload the horizontal pulsating force generated by the pulsating fluid, thereby enhancing the stability of the pulsating flow.
[0015] 2. The present application utilizes a vertical buffer assembly composed of multiple vertical sliding rods, multiple vertical springs and multiple inclined buffer plates to buffer and unload the vertical pulsating force generated by the pulsating fluid, thereby further enhancing the stability of the pulsating flow.
[0016] 3. The present application utilizes a pulsation buffer device composed of a fixed seat, a horizontal buffer assembly and a vertical buffer assembly, which can effectively attenuate the pulsating pressure of the fluid when flowing in the flow meter connector, allowing the fluid to pass through the worm gear flowmeter body more smoothly, thereby improving the accuracy of the pulsating fluid measurement results. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of this embodiment.
[0018] Figure 2 It is a schematic diagram of the main cross-sectional structure of this embodiment.
[0019] Figure 3 It is a three-dimensional structural schematic diagram of the pulsation buffer device.
[0020] Figure 4 yes Figure 2 Schematic diagram of the enlarged structure of part A.
[0021] In the figure, 1. flow meter connector; 2. worm gear flow meter body; 3. positioning rod; 4. fixing seat; 5. transverse slide groove; 6. transverse slide rod; 7. transverse spring; 8. vertical buffer plate; 9. first sealing ring; 10. vertical slide groove; 11. vertical slide rod; 12. vertical spring; 13. oblique buffer plate; 14. second sealing ring. DETAILED DESCRIPTION
[0022] The technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.
[0023] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The present application provides a turbine flowmeter for measuring pulsating flow, comprising a flowmeter connector 1 and a worm flowmeter body 2, wherein the worm flowmeter body 2 is fixedly mounted on the flowmeter connector 1, wherein:
[0024] Positioning rods 3 are fixedly mounted on the top inner wall and the bottom inner wall of the flow meter connector 1 , and pulsation buffer devices are arranged on the two positioning rods 3 , which are used to attenuate the pulsation pressure of the fluid when it flows in the flow meter connector 1 .
[0025] In this embodiment, the pulsation buffer device includes a fixed seat 4, a horizontal buffer assembly and a vertical buffer assembly. The horizontal buffer assembly is used to buffer and unload the horizontal pulsation force generated by the pulsating fluid, and the vertical buffer assembly is used to buffer and unload the vertical pulsation force generated by the pulsating fluid, thereby effectively attenuating the pulsating pressure of the fluid when flowing in the flow meter connector 1, allowing the fluid to pass through the worm flowmeter body 2 more smoothly, thereby improving the accuracy of the pulsating fluid measurement results. The top and bottom of the fixed seat 4 are respectively fixedly connected to the ends of the two positioning rods 3 that are close to each other. The horizontal buffer assembly includes a plurality of transverse slide bars 6, a plurality of transverse springs 7 and a plurality of vertical buffer plates 8. A plurality of transverse slide grooves 5 with equal spacing and annular distribution are provided on the side of the fixed seat 4 away from the worm flowmeter body 2. One end of the plurality of transverse slide bars 6 is respectively slidably installed in the corresponding transverse slide grooves 5. One end of the plurality of transverse springs 7 is respectively fixedly connected to one end of the corresponding transverse slide bar 6 located in the transverse slide groove 5. The other end of the plurality of transverse springs 7 is respectively fixedly connected to the inner wall of one side of the corresponding transverse slide groove 5. The plurality of vertical buffer plates 8 are respectively fixedly installed in the corresponding The end of the transverse slide bar 6 is away from the fixed seat 4. By utilizing the elastic force of multiple transverse springs 7, when the pulsating flow flows in the flow meter connector 1, the horizontal pulsating force generated by the pulsating fluid can be buffered and unloaded, thereby enhancing the stability of the pulsating flow. The above-mentioned vertical buffer assembly includes multiple vertical slide bars 11, multiple vertical springs 12 and multiple inclined buffer plates 13. One side of the multiple vertical buffer plates 8 is provided with a vertical slide groove 10. One end of the multiple vertical slide bars 11 is respectively slidably installed in the corresponding vertical slide groove 10. The multiple vertical springs 12 are provided with a vertical groove 10. 2 is respectively fixedly connected to one end of the corresponding vertical slide bar 11 located in the corresponding vertical slide groove 10, the other ends of the plurality of vertical springs 12 are respectively fixedly connected to one side inner wall of the corresponding vertical slide groove 10, and the plurality of inclined buffer plates 13 are respectively fixedly installed on one end of the corresponding vertical slide bar 11 located outside the vertical slide groove 10. By utilizing the elastic force of the plurality of vertical springs 12, when the pulsating flow flows in the flow meter connector 1, the vertical pulsating force generated by the pulsating fluid can be buffered and unloaded, thereby further enhancing the stability of the pulsating flow.
[0026] In this embodiment, in order to ensure that the transverse slide bar 6 can slide smoothly in the horizontal direction in the transverse slide groove 5, a first guide groove is opened on the top inner wall and the bottom inner wall of the transverse slide groove 5, and a first guide block is fixedly installed on the top and bottom of the transverse slide bar 6, and the two first guide blocks are respectively slidably installed in the corresponding first guide grooves.
[0027] In this embodiment, in order to prevent the fluid from entering the transverse slide groove 5 , a first sealing ring 9 is fixedly installed on the inner wall of the transverse slide groove 5 , and the transverse slide rod 6 is slidingly and sealingly matched with the transverse slide groove 5 through the first sealing ring 9 .
[0028] In this embodiment, in order to ensure that the vertical sliding rod 11 can slide smoothly in the vertical direction in the vertical sliding groove 10, second guide grooves are opened on the inner walls on both sides of the vertical sliding groove 10, and second guide blocks are fixedly installed on both sides of the vertical sliding rod 11. The two second guide blocks are respectively slidably installed in the corresponding second guide grooves.
[0029] In this embodiment, in order to prevent fluid from entering the vertical slide groove 10 , a second sealing ring 14 is fixedly installed on the inner wall of the vertical slide groove 10 , and the vertical slide rod 11 is slidably sealed with the vertical slide groove 10 through the second sealing ring 14 .
[0030] In this embodiment, it should be noted that: Figure 2 The arrows in the figure represent the flow direction of the pulsating fluid.
[0031] Through the above-mentioned structure, when the turbine flowmeter for measuring pulsating flow provided by the present application is in use, the pulsating buffer device can effectively attenuate the pulsating pressure of the fluid when it flows in the flowmeter connector 1, allowing the fluid to pass through the worm wheel flowmeter body 2 more smoothly, thereby improving the accuracy of the pulsating fluid measurement results. During specific use, after the flowmeter connector is connected to the circulation delivery pipeline, and the worm wheel flowmeter body 2 is electrically connected, the worm wheel flowmeter body 2 is started and the flow of the pulsating fluid can be measured. During the measurement process, the pulsating fluid entering the flowmeter connector 1 will continuously pass through the pulsating buffer device first, and the horizontal pulsating force generated by the pulsating fluid will apply horizontal thrust to multiple vertical buffer plates 8, thereby causing multiple transverse slide bars 6 to slide horizontally in the corresponding transverse slide grooves 5, and multiple transverse springs 7 are deformed by force to generate elastic force By utilizing the elastic force of multiple transverse springs 7, the horizontal pulsating force generated by the pulsating fluid can be buffered and unloaded, thereby enhancing the stability of the pulsating circulation flow. The vertical pulsating force generated by the pulsating fluid will apply vertical thrust to the multiple inclined buffer plates, thereby causing the multiple vertical slide bars 11 to slide vertically in the corresponding vertical slide grooves 10, and the multiple vertical springs 12 are deformed by force to generate elastic force. By utilizing the elastic force of multiple vertical springs 12, the vertical pulsating force generated by the pulsating fluid can be buffered and unloaded, thereby further enhancing the stability of the pulsating circulation flow. Furthermore, by effectively buffering and unloading the horizontal and vertical pulsating forces generated by the pulsating fluid, the pulsating pressure of the fluid when flowing in the flow meter connector 1 can be effectively attenuated, allowing the fluid to pass through the worm gear flowmeter body 2 more smoothly, thereby improving the accuracy of the pulsating fluid measurement results.
Claims
1. A turbine flowmeter for measuring pulsating flow, characterized in that: The invention comprises a flow meter connector (1) and a worm gear flow meter body (2), wherein the worm gear flow meter body (2) is fixedly mounted on the flow meter connector (1), and positioning rods (3) are fixedly mounted on the top inner wall and the bottom inner wall of the flow meter connector (1), and pulsation buffer devices are arranged on the two positioning rods (3), and the pulsation buffer devices are used to attenuate the pulsation pressure of the fluid when it flows in the flow meter connector (1).
2. The turbine flowmeter for measuring pulsating flow according to claim 1, characterized in that: The pulsation buffer device comprises a fixed seat (4), a horizontal buffer assembly and a vertical buffer assembly. The top and bottom of the fixed seat (4) are respectively fixedly connected to the ends of the two positioning rods (3) close to each other. The horizontal buffer assembly comprises a plurality of transverse slide bars (6), a plurality of transverse springs (7) and a plurality of vertical buffer plates (8). A plurality of transverse slide grooves (5) distributed in an annular manner with equal spacing are opened on the side of the fixed seat (4) away from the worm flowmeter body (2). One end of the plurality of transverse slide bars (6) is respectively slidably installed in the corresponding transverse slide grooves (5). One end of the plurality of transverse springs (7) is respectively fixedly connected to the end of the corresponding transverse slide bar (6) located in the transverse slide groove (5). The other ends of the plurality of transverse springs (7) are respectively fixedly connected to the inner wall of one side of the corresponding transverse slide groove (5). The plurality of vertical buffer plates (8) are respectively fixedly installed on the end of the corresponding transverse slide bar (6) away from the fixed seat (4).
3. The turbine flowmeter for measuring pulsating flow according to claim 2, characterized in that: The top inner wall and the bottom inner wall of the transverse slide groove (5) are both provided with first guide grooves, and the top and bottom of the transverse slide rod (6) are both fixedly installed with first guide blocks, and the two first guide blocks are respectively slidably installed in the corresponding first guide grooves.
4. The turbine flowmeter for measuring pulsating flow according to claim 2, characterized in that: A first sealing ring (9) is fixedly mounted on the inner wall of the transverse sliding groove (5), and the transverse sliding rod (6) is in sliding and sealing cooperation with the transverse sliding groove (5) via the first sealing ring (9).
5. The turbine flowmeter for measuring pulsating flow according to claim 2, characterized in that: The vertical buffer assembly comprises a plurality of vertical slide bars (11), a plurality of vertical springs (12) and a plurality of inclined buffer plates (13); a vertical slide groove (10) is provided on one side of each of the plurality of vertical buffer plates (8); one end of each of the plurality of vertical slide bars (11) is slidably mounted in the corresponding vertical slide groove (10); one end of each of the plurality of vertical springs (12) is fixedly connected to one end of the corresponding vertical slide bar (11) located in the corresponding vertical slide groove (10); the other ends of each of the plurality of vertical springs (12) are fixedly connected to an inner wall of one side of the corresponding vertical slide groove (10); and the plurality of inclined buffer plates (13) are fixedly mounted to one end of each of the corresponding vertical slide bars (11) located outside the vertical slide groove (10).
6. The turbine flowmeter for measuring pulsating flow according to claim 5, characterized in that: Second guide grooves are provided on both inner walls of the vertical slide groove (10), and second guide blocks are fixedly installed on both sides of the vertical slide rod (11), and two second guide blocks are respectively slidably installed in the corresponding second guide grooves.
7. The turbine flowmeter for measuring pulsating flow according to claim 5, characterized in that: A second sealing ring (14) is fixedly mounted on the inner wall of the vertical slide groove (10), and the vertical slide rod (11) is slidably sealed with the vertical slide groove (10) via the second sealing ring (14).