Turbine flowmeter

Abstract

The invention relates to the technical field of flow meters, and discloses a turbine flow meter which comprises a composite pipe body and an electronic sensing assembly installed in the middle of the composite pipe body, flow guide mechanisms are arranged in the two ends of the composite pipe body in a sleeved mode, a turbine is arranged in the middle of an inner cavity of the composite pipe body in a sleeved mode, and the middles of the two first flow guide mechanisms are connected with center shafts. According to the turbine flowmeter, a multifunctional supporting structure is formed by the two transition rod pieces and the two center shafts, and after the multifunctional supporting structure is combined with the composite pipe body, the sealing component, the turbine and the two flow guide mechanisms for use subsequently, when the turbine is used, the turbine can be mechanically jacked and limited through a plurality of reinforcing bolts in the two transition rod pieces; the reliability of rotating and supporting the turbine after the two center shafts and the two transition rod pieces are combined is fully guaranteed, the compressive strength of the turbine is improved, and when the turbine needs to be replaced, the conditions of quick disassembly and quick assembly are achieved between the center shafts and the transition rod pieces and between the sealing component and the composite pipe body.

Description

Technical Field

[0001] The present invention relates to the technical field of flow meters, in particular to a turbine flow meter. Background Art

[0002] The intelligent liquid turbine flowmeter is a new type of intelligent instrument that integrates a turbine flow sensor and a display and integrator developed using advanced ultra-low power single-chip microcomputer technology. It has obvious advantages such as compact structure, intuitive and clear readings, high reliability, no interference from external power supply, lightning resistance, and low cost. However, due to the variety of measured media, damage to the turbine blades is inevitable. Once the turbine is damaged, the turbine flowmeter can only be replaced with a new one, and the maintenance and use costs are high.

[0003] In recent years, with the further development of relevant technologies, in the prior art, the patent document with application number 202021560579.4 proposes that "at this time, the box cover 3 is opened, a telescopic rod 13 is fixed to the end of the turbine rod 6, a fixing rod 14 is fixed to the telescopic rod 13, and a groove 12 adapted for the telescopic rod 13 is provided on the housing 1. At this time, a force is applied to the fixing rod 14 so that the fixing rod 14 drives the telescopic rod 13 to move, thereby causing the telescopic rod 13 to disengage from the groove 12, and the turbine is taken out and then replaced with a new turbine." Judging from the disclosed content of the above-mentioned prior art, the only way to solve the problem of turbine damage is to replace it with a new one. The core technology of the turbine flowmeter is to set the connection structure of the turbine to be retractable under force, and to provide convenient maintenance conditions with the opening and closing structure set on the pipe body. However, in actual use, the impact force of the fluid is also relatively large. If there is no high-strength mechanical structure support like the above-mentioned prior art, the turbine is likely to fall off by itself due to pressure. Secondly, the convenient maintenance of the turbine does not solve the problem of damage to the turbine blades due to the variety of measured media from the source. Summary of the Invention

[0004] Technical problems solved In view of the deficiencies in the prior art, the present invention provides a turbine flowmeter that solves the problems raised by the above-mentioned background technology.

[0005] Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a turbine flowmeter comprising a composite tube body and an electronic sensor assembly mounted in the middle of the composite tube body, characterized in that: flow guide mechanisms are mounted in both ends of the composite tube body, a turbine is mounted in the middle of the inner cavity of the composite tube body, the middle portions of the two first flow guide mechanisms are connected to a central shaft, a transition rod is disposed between the ends of the turbine and the end of the central shaft, and an output structure within the transition rod can be mounted on the inner side of the end of the central shaft in a reciprocating and telescopic manner; The front end of the middle part of the composite pipe body is provided with a clearance groove aligned with the turbine, and the front end of the clearance groove is covered and sealed with a sealing component that can be coplanar with the inner wall of the middle part of the composite pipe body. The sealing component and the middle part of the composite pipe body are detachably installed by fasteners.

[0006] Preferably, the transition rod comprises a support tube and a T-shaped connecting shaft, one end of the support tube is fixed to the corresponding turbine end head, the T-shaped connecting shaft is clamped on the inner side of the other end of the support tube, and one end of the T-shaped connecting shaft can pass through the support tube and be fitted onto the inner side of the end head of the corresponding central shaft, and a spring is installed between the end surface of the other end of the T-shaped connecting shaft and the inner wall of one end of the support tube; A plurality of T-thread holes are provided in the end head of one end of the support tube, and the T-thread holes are all threadedly connected with reinforcing bolts that can output the top pressure of the T-connecting shaft. The T-connecting shaft serves as the output structure of the transition rod and is equipped with a linkage bearing in the set gap in the corresponding end head of the central axis to improve the connection sealing effect between the structures.

[0007] Preferably, reinforcing curved plates are fixed to the top and bottom of the front end of the middle part of the composite pipe body, threaded holes are provided in the reinforcing curved plates, and clearance holes are provided at the top and bottom of the sealing component. The fastener specifically adopts a first assembly screw, one end of which can be fitted into the clearance hole and then threadedly connected to the corresponding threaded hole, so that the sealing component and the two reinforcing curved plates can be detachably installed.

[0008] Preferably, the flow guide mechanism includes a first flow guide mechanism, which is composed of a first limiting ring and a plurality of straight guide plates fixedly sleeved in the first limiting ring and arranged along the circumference thereof, one side of each of the plurality of straight guide plates being fixed to the other end surface of the corresponding central axis, and the first limiting ring being fixedly nested in the inner side of the corresponding end head of the composite pipe body; The two adjacent straight guide plates and the inner wall of the composite pipe body are combined to form an axial straight groove. Under the guidance of multiple axial straight grooves, the lateral flow component of the fluid is eliminated, and the fluid is forced to flow axially. The structure is simple and the pressure loss during use is small.

[0009] Preferably, the flow guiding mechanism includes a second flow guiding mechanism, which is composed of a second limiting ring and a porous plate fixedly nested in the second limiting ring. The middle part of the porous plate is fixedly connected to the other end of the corresponding central axis, and the second limiting ring is fixedly nested on the inner side of the corresponding end head of the composite pipe body. The porous plate can disperse fluid energy through porous damping, suppress pulsation and eddy current, has strong anti-interference ability and low manufacturing cost.

[0010] Preferably, the flow guide mechanism includes a third flow guide mechanism, which is composed of a third limiting ring and a plurality of spiral guide plates fixedly sleeved in the third limiting ring and arranged along the circumference thereof, the middle portions of the plurality of porous plates being fixedly sleeved with the other ends of the corresponding central axes, and the second limiting ring being fixedly nested in the inner side of the corresponding end of the composite pipe body; The two adjacent spiral guide plates are combined with the inner wall of the composite pipe body to form a spiral groove. The flow guiding effect of the multiple spiral grooves is subsequently utilized to evenly distribute the fluid through centrifugal force and reduce the flow velocity gradient.

[0011] Preferably, the guide mechanism includes a fourth guide mechanism, which is composed of a fourth limiting ring and a honeycomb grid plate fixedly nested in the fourth limiting ring. The middle part of the honeycomb grid plate is fixedly socketed with the other end of the corresponding central axis. The fourth limiting ring is fixedly nested on the inner side of the corresponding end of the composite pipe body. The honeycomb grid plate is a grid structure composed of dense hexagonal or square honeycomb units, which divides large-scale vortices into small-scale flows and significantly reduces the turbulence intensity.

[0012] Preferably, the sealing component includes a curved surface sealing plate, the rear end of the curved surface sealing plate is clamped in the clearance groove, and a second leak-proof sealing ring is fixedly embedded on the surface of the rear end structure of the curved surface sealing plate to fill and seal the clamping gap between the curved surface sealing plate and the clearance groove, and the clearance holes provided at the top and bottom of the sealing component are respectively opened in the top and bottom of the curved surface sealing plate; A through hole is formed in the middle of the arc surface sealing plate, and a piston rod is clamped in the through hole. One end of the piston rod is arranged coplanar with the inner wall of the middle part of the composite pipe body, and the other end of the piston rod is fixedly connected to a T-shaped protective sleeve which is fitted on the front end structure of the arc surface sealing plate. A positioning screw hole is provided on the front end surface of the arc surface sealing plate, and the end structure of one end of the T-shaped protective sleeve is fitted and connected to the front end surface of the arc surface sealing plate and has a combination hole running through it. A second assembly screw threadedly connected to the positioning screw hole is installed in the combination hole. The sealing component has the adjustment effect of two makeshift spaces, which can not only meet the makeshift requirements for replacement of electronic sensor components, but also provide reverse flushing and clearing conditions for the diversion mechanism after blockage inside the composite pipe body.

[0013] Preferably, the front end of the T-shaped protective sleeve is provided with an inner hexagonal groove, and the front end sleeve gap between the T-shaped protective sleeve and the arc surface sealing plate is filled with an auxiliary sealing ring to improve the connection sealing effect between the T-shaped protective sleeve and the arc surface sealing plate.

[0014] Preferably, the composite tube body includes a middle tube body, both ends of the middle tube body are sleeved with side tube bodies through bearings, and the sleeve gap between the side tube body and the middle tube body is filled with a first leak-proof sealing ring, the inner ring structure of the bearing is fixedly sleeved on the outer side of the corresponding end of the middle tube body, and the outer ring structure of the bearing is clamped with the inner wall of the end of the side tube body; The outer ring structure of the ends of the middle tube body is provided with a plurality of combination screw holes arranged along its circumference, and the outer ring structure of the end of the side tube body is provided with a plurality of positioning holes arranged along its circumference, and the positioning holes are provided with third assembly screws that can be threadedly connected with the corresponding combination screw holes; The two side pipes can be used to guide and bear pressure in an integrated manner relative to the middle pipe when in use. When adjustment is required, the two side pipes can also carry two identical or two different guiding mechanisms to be used in combination with the composite pipe body, thereby meeting the transportation requirements of different fluid media and reducing wear and damage to the turbine.

[0015] Beneficial effects The present invention provides a turbine flowmeter having the following beneficial effects: 1. The turbine flowmeter comprises a multifunctional support structure formed by two transition rods and two central shafts. When subsequently used in combination with a composite pipe body, a sealing component, a turbine and two flow guide mechanisms, the structure can utilize a plurality of reinforcing bolts inside the two transition rods to mechanically limit the position when the turbine is in use, thereby fully ensuring the reliability of the rotational support of the turbine by the combination of the two central shafts and the two transition rods and improving the compressive strength of the turbine. When the turbine needs to be replaced, quick disassembly and assembly conditions are provided between the central shaft and the transition rods, and between the sealing component and the composite pipe body.

[0016] 2. The turbine flowmeter is provided with a guide mechanism including a first guide mechanism, a second guide mechanism, a third guide mechanism and a fourth guide mechanism. In the subsequent use process, two identical guide mechanisms or two different guide mechanisms can be used in combination to achieve phased elimination of turbulence, swirl and pulsation, so that the fluid gradually approaches the ideal laminar flow state, achieves functional complementarity, fully protects the turbine, and enables it to adapt to a variety of fluid media while maintaining a long service life.

[0017] 3. The composite tube body of the turbine flowmeter is formed by a combination of a second limiting ring and two porous plates and other related structures. Therefore, in the subsequent use process, it provides mid-term replacement, angle adjustment and other usage conditions for the combination of two identical flow-guiding mechanisms or two different flow-guiding mechanisms, further expanding the scope of use of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional schematic diagram of the structure of the present invention; Figure 2 It is a three-dimensional schematic diagram of the structure of the present invention; Figure 3 It is a front view schematic diagram of the structure of the present invention; Figure 4 It is a front view schematic diagram of the turbine structure of the present invention; Figure 5 It is an enlarged schematic diagram of the first flow-guiding mechanism of the structure of the present invention; Figure 6 It is an enlarged schematic diagram of the second flow-guiding mechanism of the structure of the present invention; Figure 7 This is an enlarged schematic diagram of the third flow-guiding mechanism of the present invention; Figure 8 This is an enlarged schematic diagram of the fourth flow-guiding mechanism of the present invention; Figure 9 is a schematic cross-sectional view of a structural sealing component of the present invention; Figure 10 The structure of the present invention Figure 1 An enlarged schematic diagram of point A; Figure 11 The structure of the present invention Figure 1 An enlarged schematic diagram of point B; Figure 12 The structure of the present invention Figure 2 An enlarged schematic diagram of point C.

[0019] In the figure: 1. composite pipe body; 101. middle pipe body; 102. side pipe body; 103. first leak-proof sealing ring; 2. electronic sensor assembly; 3. first flow guide mechanism; 31. first limit ring; 32. straight guide plate; 4. turbine; 5. central shaft; 6. transition rod; 61. support cylinder; 62. T-type connecting shaft; 63. reinforcement bolt; 64. spring; 65. linkage bearing; 7. sealing component; 71. arc surface sealing plate; 72 , T-shaped protective sleeve; 73, piston rod; 74, second leak-proof sealing ring; 8, reinforcing curved plate; 9, first assembly screw; 10, second assembly screw; 11, second flow guide mechanism; 111, second limiting ring; 112, porous plate; 12, third flow guide mechanism; 121, third limiting ring; 122, spiral guide plate; 13, fourth flow guide mechanism; 131, fourth limiting ring; 132, honeycomb mesh plate; 14, third assembly screw. DETAILED DESCRIPTION

[0020] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0021] See also Figure 1-Figure 5 、 Figure 10A turbine flowmeter includes a composite tube body 1, an electronic sensor assembly 2 installed in the middle of the composite tube body 1, and a flow guide mechanism is installed in both ends of the composite tube body 1. The flow guide mechanism includes a first flow guide mechanism 3, which is composed of a first limiting ring 31 and a plurality of straight guide plates 32 fixedly sleeved in the first limiting ring 31 and arranged along its own circumferential direction. One side of the plurality of straight guide plates 32 is fixed to the other end surface of the corresponding central axis 5, and the first limiting ring 31 is fixedly nested in the inner side of the corresponding end of the composite tube body 1; The two adjacent straight guide plates 32 and the inner wall of the composite pipe body 1 are combined to form an axial straight groove. Under the guidance of multiple axial straight grooves, the lateral flow component of the fluid is eliminated and the fluid is forced to flow in the axial direction. The structure is simple and the pressure loss during use is small. A turbine 4 is mounted in the middle of the inner cavity of the composite pipe body 1. The middle of the two first flow guide mechanisms 3 are connected to a central shaft 5. A transition rod 6 is provided between the end of the turbine 4 and the end of the central shaft 5. The output structure inside the transition rod 6 can be mounted inside the end of the central shaft 5 in a reciprocating and telescopic manner. The transition rod 6 includes a support tube 61 and a T-shaped connecting shaft 62. One end of the support tube 61 is fixed to the corresponding end of the turbine 4. The T-shaped connecting shaft 62 is clamped on the inner side of the other end of the support tube 61. One end of the T-shaped connecting shaft 62 can pass through the support tube 61 and be fitted onto the inner side of the end of the corresponding center shaft 5. A spring 64 is installed between the end surface of the other end of the T-shaped connecting shaft 62 and the inner wall of one end of the support tube 61. A plurality of T-shaped threaded holes are provided in the end of the support tube 61, and each of the T-shaped threaded holes is threadedly connected with a reinforcing bolt 63 capable of pressing the T-shaped connecting shaft 62 to output. The T-shaped connecting shaft 62 serves as the output structure of the transition rod 6, and a linkage bearing 65 is installed in the sleeve gap in the corresponding end of the central shaft 5 to improve the connection and sealing effect between the structures; A clearance groove aligned with the turbine 4 is provided at the front end of the middle portion of the composite pipe body 1, and the front end of the clearance groove is covered and sealed with a sealing component 7 that is coplanar with the inner wall of the middle portion of the composite pipe body 1. The sealing component 7 is detachably mounted to the middle portion of the composite pipe body 1 via fasteners. Reinforced curved plates 8 are fixed to the top and bottom of the front end of the middle part of the composite pipe body 1. Threaded holes are provided in the reinforcing curved plates 8. Clearance holes are provided at the top and bottom of the sealing component 7. The fasteners specifically use first assembly screws 9. One end of the first assembly screw 9 can be fitted into the clearance hole and then threadedly connected to the corresponding threaded hole, so that the sealing component 7 and the two reinforcing curved plates 8 can be detachably installed.

[0022] When in use, the plurality of axial straight grooves formed between the two first flow-guiding mechanisms 3 and the composite pipe body 1 are used to guide the fluid medium to be tested passing through the composite pipe body 1 while eliminating the lateral flow component of the fluid, forcing the fluid to flow axially, reducing turbulence and vortexes, and thereby reducing damage to the turbine 4; When replacing the turbine 4, first remove the first assembly screw 9 between the sealing component 7 and the reinforcing curved plate 8, and remove the sealing component 7 from the central front end of the composite pipe body 1 as a whole modular assembly, thereby completely clearing the turbine 4. Next, use a wrench to tighten the reinforcing bolt 63 inside one transition rod 6, removing the reinforcing bolt 63 from the corresponding support tube 61. At the same time, the T-shaped connecting shaft 62 will be pulled back into the support tube 61 by the spring 64, and automatically separated from the corresponding central shaft 5. Similarly, the other transition rod 6 is operated in the same manner until both transition rods 6 are automatically separated from the two central shafts 5. Take out the old turbine 4 and install the new turbine 4. Use the handle to thread the spring 64 into the T-shaped threaded hole inside the corresponding support tube 61 and press the corresponding T-shaped connecting shaft 62 during further movement. After the spring 64 is threaded to the maximum stroke, one end of the T-shaped connecting shaft 62 will also be synchronously sleeved on the inside of the corresponding center shaft 5, and the linkage bearing 65 provides friction reduction conditions. Similarly, the other transition rod 6 is also operated according to the above steps until the new turbine 4 is reinstalled between the two center shafts 5. Then, reset the installation of the sealing component 7 and the composite locking first assembly screw 9.

[0023] See also Figure 6 The flow guiding mechanism includes a second flow guiding mechanism 11, which is composed of a second limiting ring 111 and a porous plate 112 fixedly nested in the second limiting ring 111. The middle part of the porous plate 112 is fixedly connected with the other end of the corresponding central axis 5. The second limiting ring 111 is fixedly nested on the inner side of the corresponding end of the composite pipe body 1. The porous plate 112 can disperse fluid energy through porous damping, suppress pulsation and eddy current, have strong anti-interference ability and low manufacturing cost.

[0024] When in use, the guiding effect of the second guide mechanism 11 itself can achieve the effect of porous damping to disperse fluid energy, suppress pulsation and eddy current, and then reduce the damage of the fluid medium to be tested to the turbine 4. In addition, after a second guide mechanism 11 and a first guide mechanism 3 are used in combination with the composite pipe body 1, in the process of guiding the fluid medium to be tested, the axial straight groove eliminates the lateral flow component, and the porous plate 112 suppresses high-frequency pulsation, thereby reducing the signal noise by 30%, and significantly reducing the turbine speed fluctuation, further protecting the turbine 4 and extending the service life of the turbine 4.

[0025] See also Figure 7The flow guiding mechanism includes a third flow guiding mechanism 12, which is composed of a third limiting ring 121 and a plurality of spiral guide plates 122 arranged along its own circumference and fixedly sleeved in the third limiting ring 121. The middle parts of the plurality of porous plates 112 are fixedly sleeved with the other ends of the corresponding central axes 5, and the second limiting ring 111 is fixedly nested in the inner side of the corresponding end of the composite pipe body 1; The two adjacent spiral guide plates 122 and the inner wall of the composite pipe body 1 are combined to form a spiral groove. Subsequently, the flow guiding effect of the multiple spiral grooves is utilized to evenly distribute the fluid through centrifugal force and reduce the flow velocity gradient.

[0026] When in use, the guiding effect of the third guiding mechanism 12 itself can achieve the purpose of evenly distributing the fluid through centrifugal force and reducing the flow velocity gradient. In addition, after a third guiding mechanism 12 and a second guiding mechanism 11 are used in combination with the composite tube body 1, the porous plate 112 can block large particles in the process of guiding the fluid medium to be tested. The internal part of the third guiding mechanism 12 cooperates with the multiple spiral grooves formed by the composite tube body 1 to prevent blockage through rotational flushing, thereby having a guiding function.

[0027] See also Figure 8 The guide mechanism includes a fourth guide mechanism 13, which is composed of a fourth limiting ring 131 and a honeycomb grid plate 132 fixedly nested in the fourth limiting ring 131. The middle part of the honeycomb grid plate 132 is fixedly connected with the other end of the corresponding central axis 5. The fourth limiting ring 131 is fixedly nested on the inner side of the corresponding end of the composite pipe body 1. The honeycomb grid plate 132 is a grid structure composed of dense hexagonal or square honeycomb units, which divides large-scale eddies into small-scale flows and significantly reduces the turbulence intensity.

[0028] When in use, the fourth flow-guiding mechanism 13 itself divides the large-scale eddies into small-scale flows, significantly reducing the turbulence intensity. In addition, after a fourth flow-guiding mechanism 13 and a third flow-guiding mechanism 12 are used in combination with the composite tube body 1, in the process of guiding the fluid medium to be tested, the third flow-guiding mechanism 12 cooperates with the several spiral grooves formed on the inner wall of the composite tube body 1 to initially guide the fluid to rotate, and uses centrifugal force to separate impurities or bubbles. The honeycomb grid plate 132 further divides the eddies and refines the flow velocity distribution.

[0029] See also Figure 9 The sealing component 7 includes a curved sealing plate 71, the rear end of the curved sealing plate 71 is clamped in the clearance groove, and a second leak-proof sealing ring 74 is fixedly nested on the surface of the rear end structure of the curved sealing plate 71 to fill and seal the gap between the curved sealing plate 71 and the clearance groove. The clearance holes provided at the top and bottom of the sealing component 7 are respectively opened in the top of the curved sealing plate 71 and the bottom of the curved sealing plate 71; A through hole is formed in the middle of the arc surface sealing plate 71, and a piston rod 73 is clamped in the through hole. One end of the piston rod 73 is arranged coplanar with the inner wall of the middle part of the composite pipe body 1, and the other end of the piston rod 73 is fixedly connected to a T-shaped protective sleeve 72 which is fitted with the front end structure of the arc surface sealing plate 71; A positioning screw hole is provided on the front end surface of the arc surface sealing plate 71, and the end structure of one end of the T-shaped protective sleeve 72 is fitted and connected to the front end surface of the arc surface sealing plate 71 and provided with a combination hole running through itself. A second assembly screw 10 is installed in the combination hole and is threadedly connected to the positioning screw hole. The sealing component 7 has the adjustment effect of two makeshift spaces, which can not only meet the makeshift requirements for replacing the electronic sensor component 2, but also provide reverse flushing and unblocking conditions for the diversion mechanism after blockage inside the composite pipe body 1. The front end of the T-shaped protective sleeve 72 is provided with an inner hexagonal groove, and the front end gap between the T-shaped protective sleeve 72 and the arc surface sealing plate 71 is filled with an auxiliary sealing ring to improve the connection and sealing effect between the T-shaped protective sleeve 72 and the arc surface sealing plate 71.

[0030] When in use, in addition to the above-mentioned disassembly and clearance of the turbine 4, the sealing component 7 also provides backwashing and clearing conditions when the second guide mechanism 11, the fourth guide mechanism 13 and other structures show signs of blockage during use. The specific operation is as follows: Remove several second assembly screws 10 inside the sealing component 7, then separate the assembly of the piston rod 73 and the T-shaped protective sleeve 72 from the front end of the arc-surface sealing plate 71, thereby making way for the internal space of the combination hole. Subsequently, connect the conduit for pumping the cleaning liquid to the front end of the arc-surface sealing plate 71 and connect it to the combination hole, and then pump the cleaning liquid through the combination hole to the inner side of the middle part of the composite pipe body 1, and then reversely flush and clear the blockage of the diversion mechanism provided at both ends of the composite pipe body 1.

[0031] See also Figure 11-12 The composite tube body 1 includes a middle section tube body 101, both ends of the middle section tube body 101 are equipped with side tube bodies 102 through bearing sleeves, and the sleeve gap between the side tube body 102 and the middle section tube body 101 is filled with a first leak-proof sealing ring 103, the inner ring structure of the bearing is fixedly sleeved on the outer side of the corresponding end of the middle section tube body 101, and the outer ring structure of the bearing is clamped with the inner wall of the end of the side tube body 102; The outer ring structure of the ends of the middle tube body 101 is provided with a plurality of combination screw holes arranged along its circumference. The outer ring structure of the end of the side tube body 102 is provided with a plurality of positioning holes arranged along its circumference. The positioning holes are provided with third assembly screws 14 that can be threadedly connected with the corresponding combination screw holes. The two side tubes 102 can perform integrated flow diversion and pressure bearing relative to the middle tube 101 when in use. When adjustment is required, the two side tubes 102 can also carry two identical or two different flow diversion mechanisms to be used in combination with the composite tube 1, thereby meeting the transportation requirements of different fluid media and reducing wear and damage to the turbine 4.

[0032] During use, the first guide mechanism 3, the second guide mechanism 11, the third guide mechanism 12 and the fourth guide mechanism 13 can be combined and replaced in pairs by reciprocating assembly of the two porous plates 112 and the second limiting ring 111. The specific operation is as follows: For example, when the first flow guiding mechanism 3 and the second flow guiding mechanism 11 are required to be used in combination, the first flow guiding mechanism 3, the second flow guiding mechanism 11 and the two central shafts 5 are respectively installed inside the two porous plates 112. Then, the two porous plates 112 are fitted and spliced ​​with the two ends of the second limiting ring 111. After the preliminary assembly is completed, the porous plates 112 are screwed until the positioning holes on the porous plates 112 are aligned one by one with the combination screw holes on the corresponding ends of the second limiting ring 111. After completion, a plurality of third assembly screws 14 are sequentially fitted with the corresponding number of positioning holes and then threadedly connected and locked with the corresponding number of combination screw holes, thereby realizing the integrated connection between the two porous plates 112 and the second limiting ring 111, and the second flow guiding mechanism 11 and the first guide mechanism 3 will also be used in combination to guide the fluid medium to be tested; When the guiding angle of the first flow guiding mechanism 3 needs to be adjusted during the specific guidance of the fluid medium to be tested, the third assembly screw 14 on the corresponding porous plate 112 is first removed. After completion, the porous plate 112 is twisted to drive the first flow guiding mechanism 3 to perform synchronous rotation adjustment until the appropriate angle is reached. After completion, the third assembly screw 14 is reset and locked.

[0033] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0034] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A turbine flowmeter comprising a composite pipe body (1) and an electronic sensor assembly (2) mounted in the middle of the composite pipe body (1), characterized in that: Both ends of the composite tube body (1) are fitted with flow guide mechanisms, and the middle of the inner cavity of the composite tube body (1) is fitted with a turbine (4), the middle of the two flow guide mechanisms are connected to a central shaft (5), a transition rod (6) is provided between the end of the turbine (4) and the end of the central shaft (5), and the output structure inside the transition rod (6) can be fitted with the inner side of the end of the central shaft (5) in a reciprocating and telescopic manner; The front end of the middle portion of the composite pipe body (1) is provided with a clearance groove aligned with the turbine (4), and the front end of the clearance groove is covered and sealed with a sealing component (7) that can be coplanar with the inner wall of the middle portion of the composite pipe body (1), and the sealing component (7) and the middle portion of the composite pipe body (1) are detachably mounted via fasteners.

2. A turbine flowmeter according to claim 1, characterized in that: The transition rod (6) includes a support tube (61) and a T-shaped connecting shaft (62), one end of the support tube (61) is fixed to the end of the corresponding turbine (4), the T-shaped connecting shaft (62) is clamped on the inner side of the other end of the support tube (61), and one end of the T-shaped connecting shaft (62) can pass through the support tube (61) and be fitted to the inner side of the end of the corresponding central shaft (5), and a spring (64) is installed between the end surface of the other end of the T-shaped connecting shaft (62) and the inner wall of one end of the support tube (61); A plurality of T-shaped threaded holes are provided in the end of one end of the support tube (61), and the plurality of T-shaped threaded holes are threadedly connected with reinforcing bolts (63) capable of pressing the output of the T-shaped connecting shaft (62). The T-shaped connecting shaft (62) serves as the output structure of the transition rod (6) and is provided with a linkage bearing (65) in the sleeve gap in the corresponding end of the central shaft (5).

3. A turbine flowmeter according to claim 1, characterized in that: The top and bottom of the front end of the middle part of the composite pipe body (1) are fixed with reinforcing curved plates (8), threaded holes are provided in the reinforcing curved plates (8), and the top and bottom of the sealing component (7) are provided with clearance holes. The fastener is specifically a first assembly screw (9), one end of which can be fitted into the clearance hole and then threadedly connected to the corresponding threaded hole, so that the sealing component (7) and the two reinforcing curved plates (8) can be detachably installed.

4. A turbine flowmeter according to claim 1, characterized in that: The flow guiding mechanism comprises a first flow guiding mechanism (3), the first flow guiding mechanism (3) being composed of a first limiting ring (31) and a plurality of straight guide plates (32) fixedly sleeved in the first limiting ring (31) and arranged along its own circumference, one side of the plurality of straight guide plates (32) being fixed to the other end surface of the corresponding central axis (5), and the first limiting ring (31) being fixedly nested in the inner side of the corresponding end of the composite pipe body (1); An axial straight groove is formed between two adjacent straight guide plates (32) and the inner wall of the composite pipe body (1).

5. The turbine flowmeter according to claim 1, characterized in that: The flow guiding mechanism comprises a second flow guiding mechanism (11), the second flow guiding mechanism (11) being composed of a second limiting ring (111) and a porous plate (112) fixedly nested in the second limiting ring (111), the middle portion of the porous plate (112) being fixedly sleeved with the other end of the corresponding central axis (5), and the second limiting ring (111) being fixedly nested in the inner side of the corresponding end of the composite pipe body (1).

6. The turbine flowmeter according to claim 1, characterized in that: The flow guiding mechanism includes a third flow guiding mechanism (12), the third flow guiding mechanism (12) is composed of a third limiting ring (121) and a plurality of spiral guide plates (122) fixedly sleeved in the third limiting ring (121) and arranged along its own circumference, the middle parts of the plurality of porous plates (112) are fixedly sleeved with the other end of the corresponding central axis (5), and the second limiting ring (111) is fixedly nested in the inner side of the corresponding end of the composite pipe body (1); The two adjacent spiral guide plates (122) are combined with the inner wall of the composite tube body (1) to form a spiral groove.

7. The turbine flowmeter according to claim 1, characterized in that: The flow guiding mechanism comprises a fourth flow guiding mechanism (13), the fourth flow guiding mechanism (13) being composed of a fourth limiting ring (131) and a honeycomb grid plate (132) fixedly nested in the fourth limiting ring (131), the middle portion of the honeycomb grid plate (132) being fixedly sleeved with the other end of the corresponding central axis (5), and the fourth limiting ring (131) being fixedly nested in the inner side of the corresponding end of the composite pipe body (1).

8. The turbine flowmeter according to claim 1, characterized in that: The sealing component (7) includes a curved surface sealing plate (71), the rear end of the curved surface sealing plate (71) is clamped in the clearance groove, and a second leak-proof sealing ring (74) is fixedly embedded on the surface of the rear end structure of the curved surface sealing plate (71) for filling and sealing the gap between the curved surface sealing plate (71) and the clearance groove, and the clearance holes provided at the top and bottom of the sealing component (7) are respectively opened in the top of the curved surface sealing plate (71) and the bottom of the curved surface sealing plate (71); A through hole is provided in the middle of the arc surface sealing plate (71), a piston rod (73) is clamped in the through hole, one end of the piston rod (73) is arranged coplanar with the inner wall of the middle part of the composite pipe body (1), and the other end of the piston rod (73) is fixedly connected to a T-shaped protective sleeve (72) which is fitted on the front end structure of the arc surface sealing plate (71); A positioning screw hole is provided on the front end surface of the arc surface sealing plate (71), and an end structure of one end of the T-shaped protective sleeve (72) is fitted and connected to the front end surface of the arc surface sealing plate (71) and has a combination hole passing through it, wherein a second assembly screw (10) threadedly connected to the positioning screw hole is installed in the combination hole.

9. The turbine flowmeter according to claim 8, characterized in that: The front end of the T-shaped protective sleeve (72) is provided with an inner hexagonal groove, and the front end sleeve gap between the T-shaped protective sleeve (72) and the arc surface sealing plate (71) is filled with an auxiliary sealing ring.

10. The turbine flowmeter according to claim 1, characterized in that: The composite tube body (1) comprises a middle section tube body (101), both ends of the middle section tube body (101) are fitted with side tube bodies (102) via bearing sleeves, and a first leak-proof sealing ring (103) is filled in the sleeve gap between the side tube body (102) and the middle section tube body (101), the inner ring structure of the bearing is fixedly sleeved on the outer side of the corresponding end of the middle section tube body (101), and the outer ring structure of the bearing is clamped with the inner wall of the end of the side tube body (102); The outer ring structure of the ends of the middle section tube body (101) is provided with a plurality of combination screw holes arranged along its own circumference, and the outer ring structure of the ends of the side tube body (102) is provided with a plurality of positioning holes arranged along its own circumference, and the positioning holes are provided with third assembly screws (14) that can be threadedly connected with the corresponding combination screw holes.

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