CN215296334U

CN215296334U - Turbine flowmeter

Info

Publication number: CN215296334U
Application number: CN202121183104.2U
Authority: CN
Inventors: 戴发园
Original assignee: Shanghai Heji Automation Instrument Co ltd
Current assignee: Shanghai Heji Automation Instrument Co ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2021-12-24
Anticipated expiration: 2031-05-28

Abstract

The application relates to the field of liquid flow velocity measuring equipment, in particular to a turbine flowmeter. A turbine flowmeter comprises a turbine flowmeter body and a turbine flowmeter display, wherein one end of the turbine flowmeter body is detachably communicated with a first anti-blocking pipe fitting, and one end of the turbine flowmeter body is detachably communicated with a second anti-blocking pipe fitting; the first anti-blocking pipe fitting is connected with a first control valve; the second anti-blocking pipe fitting is connected with a second control valve; one end of the first anti-blocking pipe fitting is communicated with one end of the turbine flowmeter body, and the other end of the first anti-blocking pipe fitting is communicated with a pipeline to be installed; one end of the second anti-blocking pipe fitting is communicated with the other end of the turbine flowmeter body, and the other end of the second anti-blocking pipe fitting is communicated with a pipeline to be installed. In the installation process, impurities can be prevented from entering the turbine flowmeter body, the measurement precision of the turbine flowmeter after installation is guaranteed, reworking and reinstallation are avoided, and therefore the installation difficulty of the turbine flowmeter is reduced.

Description

Turbine flowmeter

Technical Field

The application relates to the field of liquid flow velocity measuring equipment, in particular to a turbine flowmeter.

Background

The turbine flowmeter is a flowmeter which adopts a turbine to measure, and the main principle is as follows: it converts the flow rate into the rotational speed of the turbine, which is converted into an electrical signal proportional to the flow. Thereby testing the resulting liquid flow rate. The turbine flowmeter has the advantages of high precision and good repeatability, can be used for conditions of high pressure, high temperature, low temperature, micro flow and the like, and is widely applied to measurement objects of petroleum, organic liquid, inorganic liquid, low temperature fluid and the like.

Referring to fig. 4, currently, a turbine flowmeter in the related art includes a turbine flowmeter body 1, and a turbine flowmeter display 11, where the turbine flowmeter display 11 is connected to an intermediate upper end portion of the turbine flowmeter body 1. The two ends of the turbine flowmeter body 1 are welded with flange plates 12, and the turbine flowmeter body 1 is fixedly connected with a pipeline required to be provided with the turbine flowmeter through the flange plates 12.

In view of the above-mentioned related art solutions, the applicant has found the following drawbacks: when the installation of the turbine flowmeter is carried out, the field conditions cannot be predicted, and the applicant has encountered the following situations in the actual installation: during the installation, turbine flowmeter body is the opening, and inside external impurity got into turbine flowmeter body, made turbine and bearing blocked, led to the test inaccuracy even can't record the liquid velocity of flow. If the condition that the test is inaccurate or even the liquid flow rate cannot be measured occurs, the turbine flowmeter is required to be disassembled for calibration, maintenance and cleaning, and therefore the problem that the installation of the turbine flowmeter is troublesome in the related art exists.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the installation of a turbine flowmeter is troublesome in the prior art, the application aims to provide the turbine flowmeter.

The application purpose of the application is realized by the following technical scheme:

a turbine flowmeter comprises a turbine flowmeter body and a turbine flowmeter display, wherein the turbine flowmeter display is connected to the upper end part of the middle of the turbine flowmeter body; the first anti-blocking pipe fitting is connected with a first control valve; the second anti-blocking pipe fitting is connected with a second control valve; one end of the first anti-blocking pipe fitting is communicated with one end of the turbine flowmeter body, and the other end of the first anti-blocking pipe fitting is communicated with a pipeline to be installed; one end of the second anti-blocking pipe fitting is communicated with the other end of the turbine flowmeter body, and the other end of the second anti-blocking pipe fitting is communicated with a pipeline to be installed.

Through adopting above-mentioned technical scheme, when this application is installed, first control valve and second control valve are the closure, prevent blockking up under the jam effect of pipe fitting at first jam pipe fitting and second, can avoid impurity entering turbine flowmeter body inside this application carries out the installation in-process, guaranteed the measurement accuracy of installation completion back turbine flowmeter, avoided appearing doing over again and adorn to turbine flowmeter's the installation degree of difficulty has been reduced.

Preferably, one end of the first anti-blocking pipe fitting is fixedly connected with a first flange plate; the other end of the first anti-blocking pipe fitting is fixedly connected with a first connecting piece; one end of the second anti-blocking pipe fitting is fixedly connected with a second flange plate; the other end of the second anti-blocking pipe fitting is fixedly connected with a second connecting piece; the two ends of the turbine flowmeter body are fixedly connected with matched connecting pieces; the first connecting piece is detachably connected with a matching connecting piece at one end of the turbine flowmeter body; the second connecting piece can be dismantled and be connected in the cooperation connecting piece of turbine flowmeter body other end.

Through adopting above-mentioned technical scheme, can reduce the first installation degree of difficulty of preventing blockking up the pipe fitting and the second prevents blockking up the pipe fitting, is convenient for install, and also the convenient to detach maintenance simultaneously guarantees the turbine flowmeter body test accuracy of installation.

Preferably, the first connecting piece and the second connecting piece have the same structure; the first connecting piece comprises a first ring body, and the inner wall of the first ring body is welded at one end of the first anti-blocking pipe fitting; a first annular groove is formed in the surface of one end, back to the first anti-blocking pipe fitting, of the first annular body; a plurality of first annular convex teeth are integrally formed at the upper part of the inner wall of the first annular groove; a first arc-shaped groove is formed between the adjacent first annular convex teeth; the matching connecting piece comprises a second annular body, and the inner wall of the second annular body is welded on the turbine flowmeter body; a lug is integrally formed on the surface of one end of the second ring body, which faces away from the turbine flowmeter body; a plurality of second annular convex teeth are integrally formed at the upper part of the outer wall of the convex block; a second arc-shaped groove is formed between the adjacent second annular convex teeth; the second annular convex tooth can be embedded in the first arc-shaped groove; the first annular convex tooth can be embedded in the second arc-shaped groove.

Through adopting above-mentioned technical scheme, realized that the first pipe fitting of preventing blockking up can dismantle through first connecting piece and connect in turbine flowmeter body one end, the second prevents blockking up the pipe fitting and can dismantle through the second connecting piece and connect in the turbine flowmeter body other end, and the whole installation of being convenient for, also convenient to detach maintenance.

Preferably, a first semicircular groove is formed in the surface of one end, back to the second anti-blocking pipe, of the first circular ring body; a second semi-circular groove is formed in the surface of one end, back to the turbine flowmeter body, of the second circular ring body; a rubber sealing ring is clamped in the first semicircular groove; the rubber sealing ring is clamped in the second semi-circular groove; the inner diameter of the first semicircular groove is larger than the diameter of the first ring groove.

Through adopting above-mentioned technical scheme, strengthen holistic connection leakproofness, guarantee the installation quality of this application.

Preferably, the first ring body is in threaded connection with a fastening bolt; the fastening bolt is connected with the second ring body in a threaded mode.

Through adopting above-mentioned technical scheme, strengthen holistic joint strength, guarantee the installation quality of this application.

Preferably, the two ends of the turbine flowmeter body are communicated with a calibration mechanism.

By adopting the technical scheme, the turbine flowmeter can be calibrated, and the accuracy of the mounted turbine flowmeter is ensured.

Preferably, the calibration mechanism comprises a first connecting pipe, a second connecting pipe, a U-shaped connecting pipe, a third connecting pipe, a centrifugal pump and a water storage tank, wherein one end of the first connecting pipe is detachably connected to the turbine flowmeter body, and the other end of the first connecting pipe is detachably connected to the first anti-blocking pipe; one end of the second connecting pipe is detachably connected to the turbine flowmeter body, and the other end of the second connecting pipe is detachably connected to the second anti-blocking pipe; one end of the U-shaped connecting pipe is detachably connected with a third control valve, and the other end of the U-shaped connecting pipe is detachably connected with a fourth control valve; the third control valve is communicated with the outer side wall of the first connecting pipe; the fourth control valve is communicated with the outer side wall of the second connecting pipe; one end of the third connecting pipe is communicated with the middle part of the U-shaped connecting pipe, and the other end of the third connecting pipe is communicated with the centrifugal pump; the water inlet end of the centrifugal pump is communicated with the water storage tank.

By adopting the technical scheme, the first control valve and the fourth control valve are closed, the second control valve and the third control valve are opened, the water body in the water storage tank can be conveyed to the turbine flowmeter body at a constant speed to measure the flow speed under the action of the centrifugal pump, and the reading displayed in the turbine flowmeter display and the flow speed of the liquid output by the centrifugal pump are compared, so that the installation quality and the detection precision of the installed turbine flowmeter body are known.

Preferably, the first connecting pipe and the second connecting pipe are identical in structure; one end of the first connecting pipe is fixedly connected with a third connecting piece; the third connecting piece and the second connecting piece have the same structure; the other end of the first connecting pipe is fixedly connected with a first connecting piece; the first fitting is structurally the same as the mating fitting.

Through adopting above-mentioned technical scheme, the assembly and the dismantlement maintenance of the aligning gear of being convenient for.

In summary, the present application has the following advantages:

1. this application has avoided impurity entering turbine flowmeter body inside at the installation, and then has guaranteed the measurement accuracy of turbine flowmeter after the installation is accomplished, and has avoided appearing reworking and has adorned again, has reduced turbine flowmeter's the installation degree of difficulty.

2. The utility model provides a calibration mechanism can play and calibrate the turbine flowmeter who installs, guarantees the turbine flowmeter measurement accuracy of installing.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment in the present application.

Fig. 2 is a schematic structural diagram of a first connecting member according to an embodiment of the present application.

Fig. 3 is a schematic structural view of a mating connector according to an embodiment of the present application.

Fig. 4 is a schematic view of the overall structure of a turbine flowmeter in the related art.

In the figure, 1, a turbine flowmeter body; 10. a mating connector; 101. a second torus; 102. a convex ring block; 103. a second annular lobe; 104. a second arc-shaped slot; 105. a second semi-circular groove; 11. a turbine flow meter display; 12. a flange plate; 2. a first anti-clogging tube; 21. a first control valve; 22. a first flange plate; 23. a first connecting member; 231. a first torus; 232. a first ring groove; 233. a first annular lobe; 234. a first arc-shaped slot; 235. a first semi-circular groove; 3. a second anti-clogging pipe; 31. a second control valve; 32. a second flange plate; 33. a second connecting member; 4. a rubber seal ring; 5. fastening a bolt; 6. a calibration mechanism; 61. a first connecting pipe; 611. a third connecting member; 612. a first coupling member; 62. a second connecting pipe; 63. a U-shaped connecting pipe; 631. a third control valve; 632. a fourth control valve; 64. a third connecting pipe; 65. a centrifugal pump; 651. a water delivery pipe; 652. calibrating the flow meter; 66. a water storage tank.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

Referring to fig. 1, for the turbine flowmeter disclosed in this application, including turbine flowmeter body 1, turbine flowmeter display 11, first prevent blockking up pipe fitting 2, second prevent blockking up pipe fitting 3 and aligning gear 6, turbine flowmeter display 11 connects in the middle upper end of turbine flowmeter body 1. Turbine flowmeter body 1 can be dismantled and communicate in aligning gear 6, and first 2 one ends of preventing blockking up pipe fitting can be dismantled and communicate in aligning gear 6, and first 2 other ends of preventing blockking up pipe fitting pass through the flange fixed intercommunication in waiting to install the pipeline. 3 one end of pipe fittings is prevented blockking up by the second can be dismantled and communicate in aligning gear 6, and 3 other ends of pipe fittings are prevented blockking up by the second pass through the flange fixed intercommunication in waiting to install the pipeline.

Referring to fig. 1, a first control valve 21 is fixedly communicated with the first anti-clogging pipe 2 through a flange, and the first control valve 21 is a ball valve. A second control valve 31 is fixedly communicated with the second anti-blocking pipe fitting 3 through a flange, and the second control valve 31 is a ball valve. The first flange plate 22 is welded to one end of the first anti-blocking pipe fitting 2 in the circumferential direction, and the first flange plate 22 of the first anti-blocking pipe fitting 2 is fixedly connected with a flange on a pipeline to be installed through bolts, so that the first anti-blocking pipe fitting 2 is fixedly communicated with the pipeline to be installed. The other end circumference welding of first anti-clogging pipe fitting 2 has first connecting piece 23, and first anti-clogging pipe fitting 2 can dismantle the intercommunication in calibration mechanism 6 through first connecting piece 23.

Referring to fig. 1, a second flange 32 is welded to one end of the second anti-blocking pipe 3 in the circumferential direction, and the second flange 32 of the second anti-blocking pipe 3 is fixedly connected with a flange on a pipeline to be installed through a bolt, so that the second anti-blocking pipe 3 is fixedly communicated with the pipeline to be installed. The other end circumference welding of second anti-clogging pipe fitting 3 has second connecting piece 33, and second anti-clogging pipe fitting 3 passes through second connecting piece 33 and can dismantle the intercommunication in aligning gear 6. The both ends fixedly connected with cooperation connecting piece 10 of turbine flowmeter body 1, first connecting piece 23 can dismantle the cooperation connecting piece 10 of connecting in turbine flowmeter body 1 one end, and the cooperation connecting piece 10 of connecting in the other end of turbine flowmeter body 1 can be dismantled to second connecting piece 33.

Referring to fig. 1, the calibration mechanism 6 includes a first connection pipe 61, a second connection pipe 62, a U-shaped connection pipe 63, a third connection pipe 64, a centrifugal pump 65, and a water storage tank 66. Wherein, first connecting pipe 61 one end circumference welding has third connecting piece 611, and third connecting piece 611 is the same with the structure of second connecting piece 33, has realized that first connecting pipe 61 passes through third connecting piece 611 and can dismantle the intercommunication in turbine flowmeter body 1 one end. The other end of the first connecting pipe 61 is welded with a first coupling piece 612 in the circumferential direction, and the first coupling piece 612 has the same structure as the matching connecting piece 10, so that the first connecting pipe 61 is detachably connected to the first anti-blocking pipe fitting 2. The first connecting pipe 61 and the second connecting pipe 62 have the same structure, the second connecting pipe 62 is detachably connected to the other end of the turbine flowmeter body 1 through a third connecting member 611, and the second connecting pipe 62 is detachably connected to the second anti-clogging pipe 3 through a first coupling member 612.

Referring to fig. 1, one end of the U-shaped connection pipe 63 is detachably connected with a third control valve 631 through a flange, and the third control valve 631 is a ball valve. The other end of the U-shaped connecting pipe 63 is detachably connected with a fourth control valve 632 through a flange, and the fourth control valve 632 is a ball valve. The end of the third control valve 631 facing away from the U-shaped connection pipe 63 is detachably connected to the outer sidewall of the first connection pipe 61 through a flange. One end of the fourth control valve 632, which faces away from the U-shaped connection pipe 63, is detachably connected to the outer sidewall of the second connection pipe 62 through a flange. One end of the third connecting pipe 64 is fixedly communicated with the middle part of the U-shaped connecting pipe 63 through a flange, and the other end of the third connecting pipe 64 is communicated with the liquid outlet end of the centrifugal pump 65 through a flange. The water inlet end of the centrifugal pump 65 is fixedly communicated with a water delivery pipe 651 through a flange, one end, back to the water inlet end of the centrifugal pump 65, of the water delivery pipe 651 is fixedly communicated with a water storage tank 66 through a flange, and the water delivery pipe 651 is fixedly communicated with a calibrated flowmeter 652 through a flange.

Referring to fig. 1, the first connecting member 23, the second connecting member 33 and the third connecting member 611 have the same structure, taking the first connecting member 23 as an example, the first connecting member 23 includes a first annular body 231, and an inner wall of the first annular body 231 in the first connecting member 23 is welded to a circumferential direction of one end of the first anti-clogging pipe 2. The inner wall of the first ring 231 of the second connecting member 33 is welded to the circumference of one end of the second anti-clogging pipe member 3. The inner wall of the first ring 231 of the third connecting member 611 is welded to the first connecting pipe 61 at one end in the circumferential direction.

Referring to fig. 2 and 3, a first annular groove 232 is formed in an end surface of the first annular ring 231 facing away from the first anti-clogging pipe 2, and a depth of the first annular groove 232 is 0.6 times a thickness of the first annular ring 231. Five first annular convex teeth 233 are integrally formed at the upper part of the inner wall of the first ring groove 232, and the upper surfaces of the five first annular convex teeth 233 are in the same plane. The outer diameter of the first annular protrusion 233 is 0.9 times the outer diameter of the first ring groove 232, and the curvature of the first annular protrusion 233 is 60 °. A first arc-shaped groove 234 is formed between the adjacent first annular convex teeth 233, and the radian of the first arc-shaped groove 234 is 12 degrees.

Referring to fig. 2 and 3, the mating connector 10 has the same structure as the first adapter 612. Taking the mating connector 10 as an example, the mating connector 10 includes a second annular ring 101, an inner wall of the second annular ring 101 in the mating connector 10 is welded to a circumferential direction of one end of the turbine flowmeter body 1, and an inner wall of the second annular ring 101 in the first mating connector 612 is welded to a circumferential direction of one end of the third connector 611. The end surface of the second ring body 101 facing away from the turbine flowmeter body 1 is integrally formed with a convex ring block 102, and the outer diameter of the convex ring block 102 is equal to the outer diameter of the first ring groove 232. The height of the cam block 102 is equal to the groove depth of the first ring groove 232. The inner diameter of the cam block 102 is equal to the inner diameter of the first annular teeth 233. Five second annular convex teeth 103 are integrally formed on the upper part of the outer wall of the convex ring block 102, the radian of the second annular convex teeth 103 is 12 degrees, and the outer diameter of the second annular convex teeth 103 is equal to the diameter of the first annular groove 232. A second arc-shaped groove 104 is formed between the adjacent second annular convex teeth 103, and the radian of the second arc-shaped groove 104 is 60 degrees. The second annular protrusion 103 can be seamlessly engaged with the first arc-shaped groove 234, and the first annular protrusion 233 can be seamlessly engaged with the second arc-shaped groove 104.

Referring to fig. 2 and 3, in order to ensure the connection sealing performance, a first semicircular groove 235 is formed in an end surface of the first annular body 231, which faces away from the second anti-clogging pipe 3, and an inner diameter of the first semicircular groove 235 is larger than a diameter of the first annular groove 232. A second semi-circular ring groove 105 is formed in one end surface, back to the turbine flowmeter body 1, of the second circular ring body 101, the inner diameter of the second semi-circular ring groove 105 is larger than the diameter of the first ring groove 232, and the first semi-circular ring groove 235 and the second semi-circular ring groove 105 are the same in size. The rubber sealing ring 4 is clamped in the first semi-circular groove 235, and the rubber sealing ring 4 can be clamped in the second semi-circular groove 105. In order to ensure the connection strength, six fastening bolts 5 are threadedly connected to the first ring 231; the fastening bolt 5 is screwed to the second torus 101, and the first torus 231 and the second torus 101 are tightly connected together. The adjacent fastening bolts 5 are spaced equally, and the included angle formed by the adjacent fastening bolts 5 is 60 degrees. The vertical projections of the six fastening bolts 5 fall into the same circular ring, and the inner diameter of the circular ring is larger than the outer diameter of the first semicircular groove 235.

The third connector 611 and the mating connector 10 are connected as follows: the convex ring block 102 is firstly embedded in the first ring groove 232, so that the second annular convex teeth 103 on the convex ring block 102 are abutted with the first annular convex teeth 233 of the first ring groove 232, then the rubber sealing ring 4 is clamped on the second ring body 101, the third connecting piece 611 is rotated, so that the second annular convex tooth 103 can be seamlessly embedded in the first arc-shaped groove 234, the first annular convex tooth 233 can be seamlessly embedded in the second arc-shaped groove 104, at this time, the upper surface butt of second annular convex tooth 103 in the lower surface of first annular convex tooth 233, bulge loop piece 102 butt in the tank bottom surface of first annular 232, and rubber seal ring 4 joint is in first annular 232 and second semicircle annular groove 105, and is last with six fastening bolt 5 threaded connection in first tourus 231 and second tourus 101, realized that third connecting piece 611 and cooperation connecting piece 10 can dismantle the connection together, and third connecting piece 611 is fixed to be linked together in turbine flowmeter body 1 promptly.

The installation mode of this application is as follows: firstly, the matching connecting piece 10 on the turbine flowmeter body 1 is detachably connected with the third connecting piece 611 on the first connecting pipe 61, so that the first connecting pipe 61 is communicated with one end of the turbine flowmeter body 1, then the matching connecting piece 10 on the turbine flowmeter body 1 is detachably connected with the third connecting piece 611 on the second connecting pipe 62, so that the second connecting pipe 62 is communicated with the other end of the turbine flowmeter body 1, then the first connecting piece 23 on the first anti-clogging pipe 2 is detachably connected with the first connecting piece 612 on the first connecting pipe 61, so that the first anti-clogging pipe 2 is communicated with the first connecting pipe 61, the first anti-clogging pipe 2 is also communicated with the turbine flowmeter body 1, and then the second connecting piece 33 on the second anti-clogging pipe 3 is detachably connected with the first connecting piece 612 on the second connecting pipe 62, so that the second anti-clogging pipe 3 is communicated with the second connecting pipe 62, the second anti-clogging pipe 3 is also communicated with the turbine flowmeter body 1, then the first flange plate 22 of the first anti-clogging pipe 2 is fixedly connected with the flange on the pipeline to be installed through the bolt, so that the first anti-clogging pipe 2 is fixedly communicated with the pipeline to be installed, the second flange plate 32 of the second anti-clogging pipe 3 is fixedly connected with the flange on the pipeline to be installed through the bolt, so that the second anti-clogging pipe 3 is fixedly communicated with the pipeline to be installed, then the two ends of the U-shaped connecting pipe 63 are connected with the third control valve 631 and the fourth control valve 632 through flanges, the third control valve 631 is communicated with the outer side wall of the first connecting pipe 61 through the flange, the fourth control valve 632 is communicated with the outer side wall of the second connecting pipe 62 through the flange, and then one end of the third connecting pipe 64 is fixedly communicated with the middle part of the U-shaped connecting pipe 63 through the flange, the other end of the third connecting pipe 64 is fixedly communicated with the liquid outlet end of the centrifugal pump 65 through a flange, the water inlet end of the centrifugal pump 65 is fixedly communicated with the water storage tank 66 through a water conveying pipe 651, and the water conveying pipe 651 is provided with a calibrated flow meter 652 in advance.

During the installation of this application, first control valve 21 and second control valve 31 are the closure, prevent blockking up under the jam effect of pipe fitting 3 at first preventing blockking up pipe fitting 2 and second, can avoid impurity to get into turbine flowmeter body 1 inside, have guaranteed the measurement accuracy of installation completion back turbine flowmeter, have avoided appearing reworking and have adorned again to turbine flowmeter's the installation degree of difficulty has been reduced.

The calibration step of the present application: the first control valve 21 and the fourth control valve 632 are closed, the second control valve 31 and the third control valve 631 are opened, under the action of the centrifugal pump 65, the water in the water storage tank 66 can be conveyed to the turbine flowmeter body 1 at a constant speed for flow rate measurement, the flow rate of the transmission water is displayed and read by the calibrated flowmeter 652, and the display number displayed in the turbine flowmeter display 11 and the display number displayed by the calibrated flowmeter 652 are compared, so that the installation quality and the detection precision of the installed turbine flowmeter body 1 can be known.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a turbine flowmeter, includes turbine flowmeter body (1), turbine flowmeter display (11), and turbine flowmeter display (11) are connected in the middle upper end of turbine flowmeter body (1), its characterized in that: one end of the turbine flowmeter body (1) is detachably communicated with a first anti-blocking pipe fitting (2), and one end of the turbine flowmeter body (1) is detachably communicated with a second anti-blocking pipe fitting (3); the first anti-blocking pipe fitting (2) is connected with a first control valve (21); the second anti-blocking pipe fitting (3) is connected with a second control valve (31); one end of the first anti-blocking pipe fitting (2) is communicated with one end of the turbine flowmeter body (1), and the other end of the first anti-blocking pipe fitting is communicated with a pipeline to be installed; one end of the second anti-blocking pipe fitting (3) is communicated with the other end of the turbine flowmeter body (1), and the other end of the second anti-blocking pipe fitting (3) is communicated with a pipeline to be installed.

2. A turbine flow meter according to claim 1, wherein: one end of the first anti-blocking pipe fitting (2) is fixedly connected with a first flange plate (22); the other end of the first anti-blocking pipe fitting (2) is fixedly connected with a first connecting piece (23); one end of the second anti-blocking pipe fitting (3) is fixedly connected with a second flange plate (32); the other end of the second anti-blocking pipe fitting (3) is fixedly connected with a second connecting piece (33); two ends of the turbine flowmeter body (1) are fixedly connected with matched connecting pieces (10); the first connecting piece (23) is detachably connected with a matching connecting piece (10) at one end of the turbine flowmeter body (1); the second connecting piece (33) is detachably connected with the matching connecting piece (10) at the other end of the turbine flowmeter body (1).

3. A turbine flow meter according to claim 2, wherein: the first connecting piece (23) and the second connecting piece (33) have the same structure; the first connecting piece (23) comprises a first ring body (231), and the inner wall of the first ring body (231) is welded at one end of the first anti-blocking pipe fitting (2); a first annular groove (232) is formed in the surface of one end, back to the first anti-blocking pipe fitting (2), of the first annular body (231); a plurality of first annular convex teeth (233) are integrally formed at the upper part of the inner wall of the first annular groove (232); a first arc-shaped groove (234) is formed between the adjacent first annular convex teeth (233); the matching connecting piece (10) comprises a second annular body (101), and the inner wall of the second annular body (101) is welded on the turbine flowmeter body (1); a lug (102) is integrally formed on one end surface of the second ring body (101) back to the turbine flowmeter body (1); a plurality of second annular convex teeth (103) are integrally formed on the upper part of the outer wall of the lug (102); a second arc-shaped groove (104) is formed between the adjacent second annular convex teeth (103); the second annular convex tooth (103) can be embedded in the first arc-shaped groove (234); the first annular convex tooth (233) can be embedded in the second arc-shaped groove (104).

4. A turbine flow meter according to claim 3, wherein: a first semicircular groove (235) is formed in the surface, facing away from the second anti-blocking pipe (3), of one end of the first circular ring body (231); a second semi-circular groove (105) is formed in the surface of one end, back to the turbine flowmeter body (1), of the second circular ring body (101); a rubber sealing ring (4) is clamped in the first semicircular groove (235); the rubber sealing ring (4) is clamped in the second semi-circular groove (105); the inner diameter of the first semi-circular ring groove (235) is larger than the diameter of the first ring groove (232).

5. A turbine flow meter according to claim 4, wherein: the first ring body (231) is in threaded connection with a fastening bolt (5); the fastening bolt (5) is connected to the second ring body (101) in a threaded manner.

6. A turbine flow meter according to claim 5, wherein: two ends of the turbine flowmeter body (1) are communicated with a calibration mechanism (6).

7. A turbine flow meter according to claim 6, wherein: the calibration mechanism (6) comprises a first connecting pipe (61), a second connecting pipe (62), a U-shaped connecting pipe (63), a third connecting pipe (64), a centrifugal pump (65) and a water storage tank (66), one end of the first connecting pipe (61) is detachably connected to the turbine flowmeter body (1), and the other end of the first connecting pipe (61) is detachably connected to the first anti-blocking pipe fitting (2); one end of the second connecting pipe (62) is detachably connected to the turbine flowmeter body (1), and the other end of the second connecting pipe is detachably connected to the second anti-blocking pipe fitting (3); one end of the U-shaped connecting pipe (63) is detachably connected with a third control valve (631), and the other end of the U-shaped connecting pipe (63) is detachably connected with a fourth control valve (632); the third control valve (631) is communicated with the outer side wall of the first connecting pipe (61); the fourth control valve (632) is communicated with the outer side wall of the second connecting pipe (62); one end of the third connecting pipe (64) is communicated with the middle part of the U-shaped connecting pipe (63), and the other end of the third connecting pipe is communicated with the centrifugal pump (65); the water inlet end of the centrifugal pump (65) is communicated with the water storage tank (66).

8. A turbine flow meter according to claim 7, wherein: the first connecting pipe (61) and the second connecting pipe (62) are identical in structure; one end of the first connecting pipe (61) is fixedly connected with a third connecting piece (611); the third connecting piece (611) has the same structure as the second connecting piece (33); the other end of the first connecting pipe (61) is fixedly connected with a first connecting piece (612); the first coupling member (612) is identical in structure to the mating coupling member (10).