A protective structure for a turbine flowmeter

Abstract

This utility model relates to a protective structure for a turbine flow meter, including a pipe body. A first connecting flange is fixedly installed inside the pipe body, and a second connecting flange is fixedly installed on the first connecting flange. O-rings are fixedly installed on the outer surfaces of both the first and second connecting flanges. A filter assembly is fixedly installed on the right side of the second connecting flange. The filter assembly includes a conical flow guide shroud. The conical flow guide shroud is fixedly installed on the right side of the second connecting flange, and a squeeze filter cylinder is threadedly connected internally to the conical flow guide shroud. An O-ring is fixedly installed on the outer surface of the squeeze filter cylinder. This turbine flow meter protective structure, through multi-stage filtration, can effectively filter out residual impurities or sand in the water, preventing these impurities from colliding with the turbine and causing damage. Pre-filtration protects the turbine flow meter and extends its service life.

Description

Technical Field

[0001] This utility model relates to the field of turbine flow meter technology, specifically a turbine flow meter protection structure. Background Technology

[0002] A turbine flow meter is a velocity-type flow meter with temperature and pressure compensation functions. It operates on the principle that the dynamic force of the flowing fluid drives the turbine blades to rotate, and the rotational speed is approximately proportional to the volumetric flow rate. The fluid volume reading of the flow meter is based on the turbine impeller rotation speed. Due to its high measurement accuracy, good repeatability and stability, wide measurement range, rapid response to flow changes, strong anti-interference ability, and easy signal transmission, turbine flow meters are widely used in petroleum, chemical, power, gas pipeline networks, and city gas industries, and are also widely used in trade settlement.

[0003] The protective structure is crucial during the operation of a turbine flow meter, as it can extend the service life of the flow meter. For example, Chinese Patent 202321857830.7 proposes a protective structure for a turbine flow meter connector. This structure features a protective component located on the side of the impeller facing the inlet end, designed to buffer pressure impact. The protective component is equipped with fan blades, the number of which is adapted to the number of blades on the impeller. This structure ensures that high-velocity and high-pressure media are buffered before flowing into the inlet end.

[0004] However, if impurities or fine sand are present in the water during turbine flow meter operation, the turbine will rotate at high speed due to the water flow. If sand or impurities come into contact with the turbine, it will cause serious damage. Therefore, a new type of turbine flow meter protection structure is proposed to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a turbine flow meter protection structure, which has the advantages of front-end filtration and preventing turbine damage. It solves the problem that if impurities or fine sand are present in the water during turbine flow meter operation, the turbine will be severely damaged if sand or impurities come into contact with it, as the turbine will rotate at high speed due to the water flow.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a turbine flow meter protection structure, comprising a pipe body, wherein a first connecting flange is fixedly installed inside the pipe body, a second connecting flange is fixedly installed on the first connecting flange, and O-rings are fixedly installed on the outer surfaces of both the first and second connecting flanges, and a filter assembly is fixedly installed on the right side of the second connecting flange.

[0007] The filtration assembly includes a conical flow guide shroud. A conical flow guide shroud is fixedly installed on the right side of the second connecting flange. An extrusion filter cylinder is internally threaded into the conical flow guide shroud. An O-ring is fixedly installed on the outer surface of the extrusion filter cylinder. A filter cake tube is fixedly installed on the right side of the extrusion filter cylinder. An extrusion plate is movably installed inside the extrusion filter cylinder. A support spring is fixedly installed on the right side of the extrusion plate. A secondary filter cylinder is threadedly connected to the right side of the outer surface of the extrusion filter cylinder. Collection chambers are provided at the top and bottom of the secondary filter cylinder. A secondary filter screen is fixedly installed on the right side of the outer surface of the secondary filter cylinder. A rotating shaft is rotatably installed inside the secondary filter cylinder. Centrifugal blades are fixedly installed on the outer surface of the rotating shaft. A fine filter screen is fixedly installed inside the conical flow guide shroud.

[0008] Furthermore, the second connecting flange is fixedly connected to the first connecting flange by bolts, and the O-ring is located between the first connecting flange, the second connecting flange, and the inner wall of the pipe body.

[0009] Furthermore, the inner wall, outer surface, and internal components of the filter assembly are all coated with anti-corrosion paint, and the right end of the extruded filter cylinder extends into the interior of the conical guide shroud.

[0010] Furthermore, a coarse filter screen is fixedly installed on the outer surface of the filter cake tube, and the filter cake tube is located inside the secondary filter cylinder.

[0011] Furthermore, the outer surface of the secondary filter cartridge is in contact with the inner wall of the conical guide shroud, and the right end of the support spring is fixedly connected to the filter residue tube.

[0012] Furthermore, the rotating shaft is positioned between the two collection chambers, the centrifugal blades are arranged at equal intervals, the fine filter screen is located on the right side of the secondary filter cylinder, the coarse filter screen is a 2mm pore size stainless steel perforated plate, the secondary filter screen is a 500 mesh filter screen, and the fine filter screen is a 0.5μm pore size sintered metal membrane.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] This turbine flow meter protection structure incorporates a filtration assembly. Water entering the turbine flow meter is first filtered through this assembly. The water then enters the conical guide shroud via the first and second connecting flanges. As water enters, the extrusion plate is forced into the filter cake tube. The water then passes through the coarse filter screen into the secondary filter cartridge, where impurities are coarsely filtered. After entering the secondary filter cartridge, the water flow drives the rotating shaft, causing the centrifugal impeller to rotate and generate centrifugal force, guiding the water into the collection chamber for a second filtration through the secondary filter screen. Finally, the water is discharged after passing through the fine filter screen, thoroughly purifying any impurities or sand in the water. This multi-stage filtration effectively removes residual impurities or sand, preventing them from colliding with the turbine and causing damage. This pre-filtration protects the turbine flow meter and extends its service life. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the filter assembly structure of this utility model;

[0017] Figure 3 This is a front sectional view of the filter assembly of this utility model;

[0018] Figure 4 This is a schematic diagram of the installation frame structure for the extrusion filter cartridge and the secondary filter cartridge of this utility model.

[0019] In the diagram: 1. Pipe body; 2. First connecting flange; 3. Second connecting flange; 4. O-ring seal; 5. Filter assembly; 501. Conical guide shroud; 502. Extrusion filter cylinder; 503. O-ring seal; 504. Filter cake pipe; 505. Extrusion plate; 506. Support spring; 507. Secondary filter cylinder; 508. Collection chamber; 509. Secondary filter screen; 510. Rotating shaft; 511. Centrifugal blades; 512. Fine filter screen. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4The turbine flow meter protection structure in this embodiment includes a pipe body 1, a first connecting flange 2 fixedly installed inside the pipe body 1, a second connecting flange 3 fixedly installed on the first connecting flange 2, O-ring seals 4 fixedly installed on the outer surfaces of the first connecting flange 2 and the second connecting flange 3, and a filter assembly 5 fixedly installed on the right side of the second connecting flange 3.

[0022] The filter assembly 5 includes a conical guide shroud 501. The conical guide shroud 501 is fixedly installed on the right side of the second connecting flange 3. The conical guide shroud 501 is internally threaded to a squeeze filter cylinder 502. An O-ring seal 503 is fixedly installed on the outer surface of the squeeze filter cylinder 502. A filter cake tube 504 is fixedly installed on the right side of the squeeze filter cylinder 502. A squeeze plate 505 is movably installed inside the squeeze filter cylinder 502. A support spring 506 is fixedly installed on the right side of the squeeze plate 505. A secondary filter cylinder 507 is threadedly connected to the right side of the outer surface of the squeeze filter cylinder 502. A collection chamber 508 is provided at the top and bottom of the secondary filter cylinder 507. A secondary filter screen 509 is fixedly installed on the right side of the outer surface of the secondary filter cylinder 507. A rotating shaft 510 is rotatably installed inside the secondary filter cylinder 507. Centrifugal blades 511 are fixedly installed on the outer surface of the rotating shaft 510. A fine filter screen 512 is fixedly installed inside the conical guide shroud 501.

[0023] In this embodiment, the O-ring 4 is used to ensure the airtightness of the filter assembly 5, ensuring that water will not leak or flow through the filter assembly 5.

[0024] In this embodiment, the entire surface and interior of the protective device are coated with anti-corrosion paint to prevent the paint from corroding and rusting after prolonged use in water, thus ensuring the service life of the protective device.

[0025] In this embodiment, a coarse filter screen of 2mm pore size stainless steel perforated plate is provided on the outside of the filter residue tube 504, a secondary filter screen 509 is a 500 mesh filter screen, and a fine filter screen 512 is a sintered metal membrane with a 0.5μm pore size.

[0026] In this embodiment, the diameter of the extrusion plate 505 is the same as the inner diameter of the filter cake tube 504, and it can be extruded into the filter cake tube 504. The outer ring of the extrusion plate 505 is inclined. After the sewage inside the filter cylinder 502 is extruded, the support spring 506 loses its thrust and its torque causes the extrusion plate 505 to reset, thereby pushing out the filtered impurities and sand and extruding them into the filter cake tube 504 to prevent it from clogging.

[0027] In this embodiment, the extrusion filter tube 504 is disassembled from the inside of the conical guide shroud 501 by rotation, and the secondary filter cylinder 507 can also be disassembled from the right side of the extrusion filter tube 504 by rotation, which facilitates the cleaning of the impurities filtered inside the filter assembly 5.

[0028] When implementing this procedure, please follow these steps:

[0029] 1) When water enters, the extrusion plate 505 will be extruded into the filter cake tube 504. The water enters the secondary filter cylinder 507 through the coarse filter screen. This process coarsely filters the impurities in the water.

[0030] 2) After entering the secondary filter cartridge 507, the water flow will drive the rotating shaft 510 to rotate, and the centrifugal impeller 511 will rotate along with it, generating centrifugal force to guide the water into the collection chamber 508.

[0031] 3) Finally, the water is discharged after being filtered through the fine filter screen 512, and the impurities or sand in the water will be thoroughly purified.

[0032] In summary, this turbine flow meter protection structure effectively filters out residual impurities or sand in the water through multi-stage filtration, preventing these impurities from colliding with the turbine and causing damage. The pre-filter protects the turbine flow meter, extending its service life. It also solves the problem that if impurities or fine sand are present in the water during turbine flow meter operation, the turbine will rotate at high speed due to the water flow, and contact with sand or impurities can lead to severe damage.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

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

Claims

1. A protective structure for a turbine flowmeter comprising a tube (1), characterized in that: The pipe body (1) is fixedly installed with a first connecting flange (2), and a second connecting flange (3) is fixedly installed on the first connecting flange (2). O-rings (4) are fixedly installed on the outer surfaces of the first connecting flange (2) and the second connecting flange (3). A filter assembly (5) is fixedly installed on the right side of the second connecting flange (3). The filter assembly (5) includes a conical guide shroud (501). The conical guide shroud (501) is fixedly installed on the right side of the second connecting flange (3). The conical guide shroud (501) is internally threaded to a squeeze filter cylinder (502). An O-ring (503) is fixedly installed on the outer surface of the squeeze filter cylinder (502). A filter cake pipe (504) is fixedly installed on the right side of the squeeze filter cylinder (502). A squeeze plate (505) is movably installed inside the squeeze filter cylinder (502). A support is fixedly installed on the right side of the squeeze plate (505). A spring (506) is provided. A secondary filter (507) is threadedly connected to the right side of the outer surface of the extrusion filter (502). A collection chamber (508) is provided at the top and bottom of the secondary filter (507). A secondary filter screen (509) is fixedly installed on the right side of the outer surface of the secondary filter (507). A rotating shaft (510) is rotatably installed inside the secondary filter (507). Centrifugal blades (511) are fixedly installed on the outer surface of the rotating shaft (510). A fine filter screen (512) is fixedly installed inside the conical guide shroud (501).

2. A flow tube guard structure according to claim 1, wherein: The second connecting flange (3) is fixedly connected to the first connecting flange (2) by bolts, and the O-ring (4) is located between the first connecting flange (2), the second connecting flange (3), and the inner wall of the pipe body (1).

3. The flow tube guard structure of claim 1, wherein: The inner wall, outer surface and internal components of the filter assembly (5) are all coated with anti-corrosion paint, and the right end of the extrusion filter cylinder (502) extends into the interior of the conical guide shroud (501).

4. The flow tube guard structure of claim 1, wherein: A coarse filter screen is fixedly installed on the outer surface of the filter cake tube (504), and the filter cake tube (504) is located inside the secondary filter cylinder (507).

5. The flow tube guard structure of claim 1, wherein: The outer surface of the secondary filter cartridge (507) is in contact with the inner wall of the conical guide shroud (501), and the right end of the support spring (506) is fixedly connected to the filter cake tube (504).

6. A flow tube guard structure according to claim 4, wherein: The rotating shaft (510) is located between the two collection chambers (508), the centrifugal blades (511) are arranged at equal intervals, the fine filter screen (512) is located on the right side of the secondary filter cylinder (507), the coarse filter screen is a stainless steel perforated plate with a 2mm pore size, the secondary filter screen (509) is a 500-mesh filter screen, and the fine filter screen (512) is a sintered metal membrane with a 0.5μm pore size.

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