A turbine flowmeter with easy impeller replacement

Abstract

The utility model relates to the technical field of turbine flowmeters, and discloses a turbine flowmeter that is easy to replace an impeller, comprising a measuring tube 1, a connecting ring fixedly connected to the right side of the outer wall of the measuring tube 1, a measuring tube 2 clamped on the right side of the connecting ring, brackets are respectively arranged inside the measuring tube 1 and the measuring tube 2, and a clamping groove 1 opposite to each other and a clamping groove 2 evenly distributed on the left side of the inner wall of the connecting ring are opened, and an impeller body is arranged between the two brackets. In the utility model, through the mutual cooperation of the bracket, the impeller body, the telescopic rod 1, the telescopic rod 2, the rotating block, the extension block, the clamping groove 1 and the clamping groove 2, the replacement of the impeller inside the turbine flowmeter is realized, the flowmeter is preventively maintained, the long-term maintenance cost is reduced, and the failure caused by aging or damage of the impeller is avoided. At the same time, different impellers can be replaced according to different flow requirements to improve accuracy.

Description

Technical Field

[0001] The utility model relates to the technical field of turbine flowmeters, in particular to a turbine flowmeter with an impeller that is easy to replace. Background Art

[0002] A turbine flowmeter is an instrument commonly used to measure the flow of liquids and gases. It mainly uses the principle of turbine motion to calculate the volume flow of the fluid passing through by measuring the speed of turbine rotation. It is widely used in industries such as industry, chemical industry, water treatment, energy, oil and gas, and the impeller in the turbine flowmeter is a key part. The impeller may lose accuracy due to wear during long-term use, especially when dealing with fluids with high flow rates or solid particles. Replacing the impeller can be part of regular maintenance to ensure the stability and long-term reliability of the flowmeter.

[0003] After searching, Chinese patent announcement number: CN209085680U discloses a front guide plate and a rear guide plate with an arc-shaped front end in a housing, and a support frame is respectively provided on the front guide plate and the rear guide plate to fix them in the center of the housing, and a plurality of impellers are provided on the turbine, and the turbine is connected to the rotating shaft, and a lubricating film formed by spraying fluorinated graphite is respectively provided on the contact surface of the rotating shaft and the turbine, and the turbine is a lightweight turbine made of low-density titanium aluminum alloy, and a magnetic material layer is sprayed on the surface of the impeller. The utility model ensures that the turbine connected to the rotating shaft is in the center of the housing, and ensures the accuracy of measurement. Even in the case of a low flow rate, the turbine can also rotate, thereby improving the accuracy of measurement; the contact surface of the rotating shaft and the turbine is respectively provided with a lubricating film formed by spraying fluorinated graphite, which can reduce the friction damage to the shaft when the turbine rotates and improve the service life of the turbine.

[0004] However, in this application, the impeller cannot be replaced. Measurements in different flow ranges may require the replacement of different impellers. If there is a problem with the impeller, the entire flow meter may need to be repaired or replaced. At the same time, this application cannot be loaded and unloaded, which is inconvenient in operation and maintenance. Therefore, a turbine flowmeter with easy impeller replacement is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a turbine flowmeter with an impeller that is easy to replace, aiming to improve the problem in the prior art that the impeller cannot be replaced and the turbine flowmeter cannot be assembled and disassembled.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a turbine flowmeter which is convenient for replacing an impeller, comprising a measuring tube 1, a connecting ring is fixedly connected to the right side of the outer wall of the measuring tube 1, a measuring tube 2 is clamped on the right side of the connecting ring, brackets are respectively arranged inside the measuring tube 1 and the measuring tube 2, a clamping groove 1 opposite to each other and a clamping groove 2 evenly distributed are opened on the left side of the inner wall of the connecting ring, a clamping rod 1 opposite to each other is fixedly connected to the left side of the bracket on the right side, two of the clamping rods 1 are clamped in the two clamping grooves 1, adjacent surfaces of the two brackets are respectively rotatably connected with rotating blocks, adjacent surfaces of the two rotating blocks are respectively fixedly connected with telescopic rod 1, adjacent surfaces of the two telescopic rods 1 are respectively slidably connected with telescopic rod 2, an impeller body is arranged between the two brackets, the ends of the two telescopic rods 2 close to each other abut against each other and are located in the impeller body, and a filter assembly is arranged inside the measuring tube 2.

[0007] As a further description of the above technical solution:

[0008] The filter assembly includes a limiting ring and a filter screen. The limiting ring is fixedly connected to the middle of the inner wall of the measuring tube 2, the filter screen is against the top of the limiting ring, and the outer wall of the filter screen is fixedly connected with evenly distributed locking rods 2, and multiple locking rods 2 are locked in multiple locking grooves 2.

[0009] As a further description of the above technical solution:

[0010] The right side of the connecting ring is fixedly connected with a uniformly distributed spring 1 and a bite rod, the middle part of the outer wall of the measuring tube 2 is fixedly connected with a fixing ring, a plurality of the bite rods are all engaged on the right side of the fixing ring, the right side of the outer wall of the measuring tube 2 is slidably connected with a sliding ring, and the measuring tube 2 is against the right side of the measuring tube 1.

[0011] As a further description of the above technical solution:

[0012] The right sides of the plurality of bite rods are all fixedly connected with an extrusion ring, and the extrusion ring abuts against the left side of the fixed ring.

[0013] As a further description of the above technical solution:

[0014] The left and right sides of the impeller body are respectively fixedly connected with two extension blocks, the two telescopic rods are respectively engaged in the inside of the two extension blocks, and the two rotating blocks are respectively against the outer walls of the two extension blocks.

[0015] As a further description of the above technical solution:

[0016] Two springs 2 are respectively fixedly connected to one side of the two telescopic rods 2 away from each other, and the two springs 2 are respectively arranged inside the telescopic rod 1.

[0017] As a further description of the above technical solution:

[0018] The measuring tube 1 and the measuring tube 2 are respectively fixedly connected with pipeline interfaces on the far side.

[0019] As a further description of the above technical solution:

[0020] A signal detector is fixedly connected to the right side of the top of the measuring tube, and the connecting ring is fixedly connected to the middle of the signal detector.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, the impeller inside the turbine flowmeter can be replaced by cooperating with the bracket, the impeller body, the telescopic rod 1, the telescopic rod 2, the rotating block, the extension block, the engaging groove 1 and the engaging groove 2, thereby preventing the flowmeter from being maintained, reducing the long-term maintenance cost, and avoiding failures caused by aging or damage of the impeller. At the same time, different impellers can be replaced according to different flow requirements to improve accuracy.

[0023] 2. In the utility model, the overall loading and unloading of the turbine flowmeter is realized through the cooperation of the spring 1, the bite rod, the extrusion ring, the fixed ring and the sliding ring, which is convenient for internal inspection and maintenance, ensuring its long-term stable operation, and at the same time making it easier to clean and descale the interior and handle the internal corrosive or solid particle-containing residues. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional schematic diagram of a turbine flowmeter for easy replacement of impellers proposed by the utility model;

[0025] Figure 2 An exploded view of a turbine flowmeter for easy replacement of impellers proposed by the utility model;

[0026] Figure 3 This is a schematic structural diagram of a measuring tube 2 of a turbine flowmeter that is convenient for replacing an impeller, as proposed by the utility model;

[0027] Figure 4 This is a schematic diagram of the structure of a filter screen of a turbine flowmeter that is convenient for replacing impellers proposed by the utility model;

[0028] Figure 5 The utility model provides a schematic structural diagram of an impeller body of a turbine flowmeter which is convenient for replacing the impeller.

[0029] Legend:

[0030] 1. Measuring tube 1; 2. Measuring tube 2; 3. Connecting ring; 4. Bracket; 5. Impeller body; 6. Clamping rod 1; 7. Telescopic rod 1; 8. Telescopic rod 2; 9. Rotating block; 10. Extension block; 11. Clamping slot 1; 12. Clamping slot 2; 13. Limiting ring; 14. Filter; 15. Clamping rod 2; 16. Signal detector; 17. Pipeline interface; 18. Spring 1; 19. Bite rod; 20. Extrusion ring; 21. Fixed ring; 22. Sliding ring; 23. Spring 2. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Reference Figure 2 , Figure 3 and Figure 5 The utility model provides an embodiment: a turbine flowmeter for easy replacement of impellers, comprising a measuring tube 1, a connecting ring 3 is fixedly connected to the right side of the outer wall of the measuring tube 1, a measuring tube 2 is clamped on the right side of the connecting ring 3, brackets 4 are respectively arranged inside the measuring tube 1 and the measuring tube 2, a clamping groove 11 opposite to each other and a clamping groove 2 12 evenly distributed are opened on the left side of the inner wall of the connecting ring 3, a clamping rod 6 opposite to each other is fixedly connected to the left side of the bracket 4 on the right side, two clamping rods 6 are clamped in the two clamping grooves 11, two adjacent sides of the two brackets 4 are respectively rotatably connected to rotating blocks 9, adjacent sides of the two rotating blocks 9 are respectively fixedly connected to telescopic rods 7, and adjacent sides of the two telescopic rods 7 are respectively slidably connected to telescopic rods 7 A retractable rod 28, an impeller body 5 is arranged between the two brackets 4, the ends of the two telescopic rods 28 close to each other abut against each other and are located in the impeller body 5, a filter assembly is arranged inside the measuring tube 2, two extension blocks 10 are fixedly connected to the left and right sides of the impeller body 5, and the two impeller bodies 5 are fixedly connected to the left and right sides with extension blocks 10, respectively. The two telescopic rods 28 are respectively engaged in the inside of the two extension blocks 10, and the two rotating blocks 9 are respectively against the outer walls of the two extension blocks 10, and the two telescopic rods 28 are respectively fixedly connected to the sides away from each other with springs 23, and the two springs 23 are respectively arranged in the telescopic rod 1 7, a signal detector 16 is fixedly connected to the right side of the top of the measuring tube 1, and the connecting ring 3 is fixedly connected to the middle of the signal detector 16.

[0033] The impeller body 5 is inserted into the telescopic rod 28 of the bracket 4 inside the measuring tube 2, and then the measuring tube 2 is inserted into the connecting ring 3 and pressed against the right side of the measuring tube 1. At the same time, the locking rod 16 is inserted into the telescopic rod 28 of the bracket 4 inside the measuring tube 1. The two telescopic rods 28 are respectively slid out in the two telescopic rods 17 through the two springs 23 and pressed against each other. The impeller body 5 and the two extension blocks 10 are rotated at the point where the two telescopic rods 28 are pressed against each other. At the same time, the adjacent surfaces of the two rotating blocks 9 are pressed against the two extension blocks 10 to prevent the liquid from flowing into the impeller body 5. Through the signal detector 1 6 calculates the rotation speed of the impeller body 5 and displays it. The signal detector 16 is fixed on the measuring tube 1 and is stabilized by the connecting ring 3 to prevent liquid leakage. When the impeller body 5 needs to be replaced, the measuring tube 1 and the measuring tube 2 2 are separated, and then the right bracket 4 is taken out from the two engaging grooves 11 through the two engaging rods 1 6. At this time, there is enough space and light to take the impeller body 5 out of the separately taken out bracket 4 again. After taking it out, a new impeller body 5 is placed on the right side bracket 4 for replacement. After replacement, the right side bracket 4 is installed and engaged in the measuring tube 2 2.

[0034] Reference Figure 3 and Figure 4 The filter assembly includes a limit ring 13 and a filter screen 14. The limit ring 13 is fixedly connected to the middle of the inner wall of the measuring tube 2, and the filter screen 14 is against the top of the limit ring 13. The outer wall of the filter screen 14 is fixedly connected with evenly distributed locking rods 15, and multiple locking rods 15 are locked in multiple locking grooves 12.

[0035] When filtering is required before measuring the liquid flow, the filter screen 14 can be engaged into the multiple engaging grooves 12 through multiple engaging rods 15 until the filter screen 14 is against the limit ring 13. When the liquid flows with impurities, it is filtered through the filter screen 14 and can be taken out separately when filtering is not needed.

[0036] Reference Figure 1 and Figure 2 , a spring 18 and a bite rod 19 are fixedly connected to the right side of the connecting ring 3, which are evenly distributed. A fixing ring 21 is fixedly connected to the middle of the outer wall of the measuring tube 2, and multiple bite rods 19 are all engaged on the right side of the fixing ring 21. A sliding ring 22 is slidably connected to the right side of the outer wall of the measuring tube 2, and the measuring tube 2 rests on the right side of the measuring tube 1. An extrusion ring 20 is fixedly connected to the right side of the multiple bite rods 19, and the extrusion ring 20 rests on the left side of the fixing ring 21. The sides of the measuring tubes 1 and 2 that are away from each other are respectively fixedly connected with pipeline interfaces 17.

[0037] When the measuring tube 2 is engaged with the connecting ring 3, the multiple bite rods 19 are lifted up on one side through the fixing ring 21. When the measuring tube 2 is engaged with the connecting ring 3 and abuts against the right side of the measuring tube 1, the multiple bite rods 19 will fall down and engage on the right side of the fixing ring 21. At the same time, the multiple springs 18 push the extrusion ring 20 to the right and abut against the left side of the fixing ring 21, completing the connection while preventing the measuring tube 2 from shaking after the connection. After the liquid pipeline is connected through the pipe interfaces 17 on both sides, it is operated. When it needs to be released, the sliding ring 22 is slid to the left in the middle of the measuring tube 2, and then the bite rod 19 is lifted up on one side. The fixing ring 21 and the sliding ring 22 are at the same height. At this time, the measuring tube 2 is pulled out to the right, and at the same time, the multiple extrusion rings 20 also push the fixing ring 21 to the right. The fixing ring 21 leaves the multiple bite rods 19, and the measuring tube 1 and the measuring tube 2 are separated.

[0038] Working principle: When the turbine flowmeter for easy replacement of impellers is used, the measuring tube 2 is engaged in the connecting ring 3, and the multiple bite rods 19 are squeezed and lifted up through the fixing ring 21 until the measuring tube 2 is against the right side of the measuring tube 1, and the multiple bite rods 19 will fall down and engage on the right side of the fixing ring 21. At the same time, the multiple springs 18 push the extrusion ring 20 out and press it against the left side of the fixing ring 21 for stability. The liquid pipeline is connected through the pipeline interfaces 17 on both sides for operation. When the impeller body 5 needs to be replaced, the sliding ring 22 is slid to the left and the multiple bite rods 19 are lifted up, and then the measuring tube 2 is pulled out to the right. At the same time, the multiple springs 18 push the extrusion ring 20 to the right, and the fixing ring 21 leaves the multiple bite rods 19 to separate the measuring tube 1 and the measuring tube 2. After the measuring tube 2 is pulled out of the measuring tube 1, the impeller body 5 leaves The telescopic rod 28 on the left side, at this time, the impeller body 5 can be taken out from the telescopic rod 28 on the right side, and at the same time, the bracket 4 on the right side is taken out from the engaging groove 11 through the engaging rod 16 to facilitate the installation of the impeller body 5, and a new impeller body 5 is replaced to engage the telescopic rod 28 on the left side, and then the taken-out bracket 4 is engaged into the engaging groove 11 through the engaging rod 16, and is engaged into the connecting ring 3 through the measuring tube 22 and abutted against the right side of the measuring tube 1 for connection and installation. At this time, the telescopic rod 28 on the right side is engaged into the impeller body 5, and the two telescopic rods 28 are pushed out in the two telescopic rods 7 by two springs 23 and abutted against each other in the impeller body 5, and the new impeller body 5 rotates between the two abutting telescopic rods 28, and the speed of the impeller body 5 is calculated and displayed by the signal detector 16 when the liquid flows.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A turbine flowmeter for easy replacement of an impeller, comprising a measuring tube (1), characterized in that: A connecting ring (3) is fixedly connected to the right side of the outer wall of the measuring tube 1 (1), and the measuring tube 2 (2) is clamped on the right side of the connecting ring (3). Brackets (4) are respectively arranged inside the measuring tube 1 (1) and the measuring tube 2 (2). The left side of the inner wall of the connecting ring (3) is provided with a clamping groove 1 (11) opposite to each other in the upper and lower sides and a clamping groove 2 (12) evenly distributed. The left side of the bracket (4) on the right side is fixedly connected to a clamping rod 1 (6) opposite to each other in the upper and lower sides. The two clamping rods 1 (6) are clamped in the two clamping rods. Inside the groove one (11), adjacent surfaces of the two brackets (4) are rotatably connected to rotating blocks (9), adjacent surfaces of the two rotating blocks (9) are fixedly connected to telescopic rods one (7), adjacent surfaces of the two telescopic rods one (7) are slidably connected to telescopic rods two (8), an impeller body (5) is arranged between the two brackets (4), and the ends of the two telescopic rods two (8) close to each other abut against each other and are located inside the impeller body (5), and a filter assembly is arranged inside the measuring tube two (2).

2. A turbine flowmeter for easy impeller replacement according to claim 1, characterized in that: The filter assembly comprises a limit ring (13) and a filter screen (14); the limit ring (13) is fixedly connected to the middle of the inner wall of the second measuring tube (2); the filter screen (14) is against the top of the limit ring (13); the outer wall of the filter screen (14) is fixedly connected with evenly distributed second clamping rods (15); a plurality of the second clamping rods (15) are clamped in a plurality of second clamping grooves (12).

3. A turbine flowmeter for easy impeller replacement according to claim 1, characterized in that: The right side of the connecting ring (3) is fixedly connected with a spring (18) and a bite rod (19) which are evenly distributed; the middle part of the outer wall of the measuring tube (2) is fixedly connected with a fixing ring (21); a plurality of the bite rods (19) are all engaged with the right side of the fixing ring (21); the right side of the outer wall of the measuring tube (2) is slidably connected with a sliding ring (22); the measuring tube (2) is pressed against the right side of the measuring tube (1).

4. A turbine flowmeter for easy replacement of impeller according to claim 3, characterized in that: The right sides of the plurality of bite rods (19) are all fixedly connected with an extrusion ring (20), and the extrusion ring (20) abuts against the left side of the fixing ring (21).

5. The turbine flowmeter for easy impeller replacement according to claim 1, characterized in that: The left and right sides of the impeller body (5) are respectively fixedly connected with extension blocks (10), the two telescopic rods (8) are respectively engaged in the inside of the two extension blocks (10), and the two rotating blocks (9) are respectively against the outer walls of the two extension blocks (10).

6. The turbine flowmeter for easy impeller replacement according to claim 1, characterized in that: The two telescopic rods (8) are respectively fixedly connected to the sides away from each other with springs (23), and the two springs (23) are respectively arranged inside the telescopic rod (7).

7. The turbine flowmeter for easy replacement of impeller according to claim 1, characterized in that: The measuring tube 1 (1) and the measuring tube 2 (2) are respectively fixedly connected with pipeline interfaces (17) on the sides away from each other.

8. The turbine flowmeter for easy impeller replacement according to claim 1, characterized in that: A signal detector (16) is fixedly connected to the right side of the top of the measuring tube 1 (1), and the connecting ring (3) is fixedly connected to the middle of the signal detector (16).

Images