CN221945288U - Impeller for turbine flowmeter - Google Patents

Abstract

The utility model discloses an impeller for a turbine flowmeter, which belongs to the technical field of liquid turbine flowmeters and comprises a measuring tube and a front end cover, wherein the front end cover is arranged at the front end of the measuring tube, the side wall of the front end cover is provided with a fixed rod, the side wall of the fixed rod is provided with the fixed cylinders and the connecting sleeve, and the connecting sleeve is arranged between the two fixed cylinders.

Description

Impeller for turbine flowmeter

Technical Field

The utility model relates to the technical field of liquid turbine flowmeters, in particular to an impeller for a turbine flowmeter.

Background Art

The turbine flowmeter is a velocity flow meter with temperature and pressure compensation functions. It is a type of velocity flowmeter. Its working principle is: the power of the flowing fluid drives the turbine impeller to rotate, and its rotation speed is approximately proportional to the volume flow rate. The fluid volume indication passing through the flowmeter is based on the number of revolutions of the turbine impeller. The turbine flowmeter has the characteristics of high measurement accuracy, good repeatability and stability, wide measuring range, rapid response to flow changes, strong anti-interference ability, and easy signal transmission. It is widely used in petroleum, chemical, electric power, gas pipeline network, urban gas and other fields.

In the existing technology, when the impeller of the turbine flowmeter is damaged, it is inconvenient to replace the impeller, and the operation process is relatively cumbersome, which increases the difficulty of maintenance.

Utility Model Content

The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

In view of the above problems and/or the problems existing in the existing liquid turbine flowmeters, the present utility model is proposed.

Therefore, the purpose of the utility model is to provide an impeller for a turbine flowmeter, which can facilitate the replacement of the impeller when the impeller is damaged, and the operation process is relatively simple, which reduces the difficulty of maintenance and improves work efficiency.

In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

An impeller for a turbine flowmeter comprises a measuring tube and a front end cover, wherein the front end cover is arranged at the front end of the measuring tube, a fixing rod is arranged on the side wall of the front end cover, a fixing cylinder and a connecting sleeve are arranged on the side wall of the fixing rod, the connecting sleeve is arranged between two fixing cylinders, an impeller shaft is arranged on the side wall of the connecting sleeve, a plurality of blades are arranged on the side wall of the impeller shaft, a thread is arranged on one end of the fixing rod, a rear end cover is arranged at the rear end of the measuring tube, a screw hole is arranged on the inner wall of the rear end cover, the fixing rod is connected to the rear end cover via the thread and the screw hole, and the side walls of the front end cover and the rear end cover are both provided with flow guide holes.

As a preferred solution of an impeller for a turbine flowmeter described in the utility model, the side wall of the front end cover is provided with a clamping ring, the inner wall of the clamping ring is provided with a sealing ring, the clamping ring is connected to the side wall of the front end cover through the sealing ring, and a filter screen is provided on the inner side of the clamping ring.

As a preferred solution of the impeller for a turbine flowmeter described in the utility model, a nut is provided at one end of the fixing rod, and the nut is movably connected to the rear end cover.

As a preferred solution of the impeller for a turbine flowmeter described in the utility model, the side wall of the measuring tube is provided with a turbine flowmeter body.

As a preferred solution of the impeller for a turbine flowmeter described in the utility model, the side walls of the front cover and the rear cover are both provided with anti-slip grooves.

As a preferred solution of the impeller for a turbine flowmeter described in the utility model, the front end cover and the rear end cover are symmetrically arranged, and the front end cover and the rear end cover are connected by a fixing rod.

As a preferred solution of the impeller for a turbine flowmeter described in the utility model, there are a plurality of guide holes, and the guide holes are connected to the inside of the measuring tube.

Compared with the prior art: In the present application document, 1. the fixing rod is used to facilitate the installation of the fixing cylinder and the connecting sleeve, the two fixing cylinders are used to facilitate the limiting of the connecting sleeve, thereby limiting the impeller, thereby improving the rotation stability of the impeller, the connecting sleeve is used to facilitate the installation of the impeller, the impeller shaft is used to facilitate the rotation operation of the impeller, the front end cover is clamped at the front end of the measuring tube, thereby facilitating the embedding and installation of the impeller in the measuring tube, the rear end cover is connected to one end of the fixing rod through threads and screw holes, thereby facilitating the front end cover and the rear end cover to be clamped at the front and rear ends of the measuring tube respectively, thereby fixing the impeller, when the rear end cover is fixed to the rear end of the measuring tube, it is convenient to squeeze one end of the fixing cylinder, thereby pressing and fixing the fixing cylinder and the connecting sleeve, thereby improving the connection stability, and the guide hole is used to facilitate the liquid to be introduced from the front end cover into the measuring tube and discharged from the guide hole of the rear end cover. When the impeller needs to be disassembled When disassembling, you only need to rotate the rear end cover to remove the rear end cover from one end of the fixing rod, then operate the front end cover to separate from the front end of the measuring tube, and slide the fixing tube and the connecting sleeve off the fixing rod respectively. Therefore, when the impeller of the turbine flowmeter is damaged, it is convenient to replace the impeller. The operation process is relatively simple, which reduces the difficulty of maintenance and improves work efficiency. 2. The filter screen is easy to install through the clamping ring, which is convenient for installation or disassembly. The sealing ring is easy to increase the sealing of the connection between the clamping ring and the front end cover. The filter screen is easy to filter impurities in the liquid and reduce internal blockage caused by impurities. At the same time, when the liquid passes through the filter screen and enters the measuring tube, the liquid is distributed and introduced into the measuring tube through several filter holes on the filter screen, thereby dispersing the impact pressure and reducing the damage to the impeller caused by the large impact force of the liquid. The impeller used for the turbine flowmeter is not easy to be damaged and is convenient for use.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

FIG1 is a schematic structural diagram of an impeller for a turbine flowmeter of the utility model;

FIG2 is an exploded view of the structure of an impeller for a turbine flowmeter of the utility model;

FIG3 is a cross-sectional view of the structure of an impeller for a turbine flowmeter of the utility model;

FIG. 4 is a schematic diagram of a filter screen for an impeller of a turbine flowmeter according to the present invention.

In the figure: 100 measuring tube, 200 front end cover, 210 fixing rod, 220 fixing cylinder, 230 connecting sleeve, 240 impeller shaft, 250 impeller, 260 thread, 270 rear end cover, 280 screw hole, 290 guide hole, 300 retaining ring, 310 sealing ring, 320 filter screen, 400 nut.

DETAILED DESCRIPTION

In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

The utility model provides an impeller for a turbine flowmeter, referring to FIGS. 1 to 4, comprising a measuring tube 100 and a front end cover 200, the front end cover 200 being clamped at the front end of the measuring tube 100, a fixing rod 210 being fixedly installed on the side wall of the front end cover 200, a fixing cylinder 220 and a connecting sleeve 230 being sleeved on the side wall of the fixing rod 210, the connecting sleeve 230 being embedded and installed between the two fixing cylinders 220, the side wall of the connecting sleeve 230 being rotatably connected to an impeller shaft 240, and the side wall of the impeller shaft 240 A plurality of impellers 250 are connected, one end of the fixing rod 210 is provided with a thread 260, the rear end of the measuring tube 100 is connected with a rear end cover 270, the inner wall of the rear end cover 270 is provided with a screw hole 280, the fixing rod 210 and the rear end cover 270 are connected through the thread 260 and the screw hole 280, the side walls of the front end cover 200 and the rear end cover 270 are provided with a guide hole 290, specifically, the fixing rod 210 is used to facilitate the installation of the fixing tube 220 and the connecting sleeve 230, and the two fixing tubes 220 are connected to each other. It is convenient to limit the connection sleeve 230, thereby limiting the impeller 250, thereby improving the rotation stability of the impeller 250, and the impeller 250 is convenient to install through the connection sleeve 230, and the impeller shaft 240 is convenient for the impeller 250 to rotate. The front end cover 200 is clamped on the front end of the measuring tube 100, so that the impeller 250 is convenient to be embedded and installed in the measuring tube 100, and the rear end cover 270 is connected with one end of the fixing rod 210 through the thread 260 and the screw hole 280. It is convenient to clamp the front end cover 200 and the rear end cover 270 on the front and rear ends of the measuring tube 100 respectively, so as to install and fix the impeller 250. When the rear end cover 270 is installed and fixed to the rear end of the measuring tube 100, it is convenient to squeeze one end of the fixing cylinder 220, so as to press and fix the fixing cylinder 220 and the connecting sleeve 230, thereby improving the connection stability. Through the guide hole 290, it is convenient to introduce the liquid from the front end cover 200 into the measuring tube 100 and discharge it from the guide hole 290 of the rear end cover 270.

A nut 400 is provided at one end of the fixing rod 210 , and the nut 400 is movably connected to the rear end cover 270 . Specifically, the nut 400 cooperates with the fixing rod 210 to increase the connection firmness between the rear end cover 270 and the rear end of the measuring tube 100 .

The side wall of the measuring tube 100 is provided with a turbine flowmeter body. Specifically, the turbine flowmeter body is used to facilitate the measurement of the flow of the liquid. The impeller 250 is rotated by utilizing the flow of the liquid, and the flow is measured by calculating the rotation speed.

The side walls of the front end cover 200 and the rear end cover 270 are both provided with anti-skid patterns. Specifically, the anti-skid patterns facilitate the use of the rear end cover 270 and the front end cover 200 and facilitate operation.

The front end cover 200 and the rear end cover 270 are symmetrically arranged and connected by a fixing rod 210. Specifically, the front end cover 200 and the rear end cover 270 are conveniently clamped and fixed to the front and rear ends of the measuring tube 100 by the fixing rod 210, so as to support and position the impeller 250 and facilitate use.

A plurality of guide holes 290 are provided, and the guide holes 290 are connected with the inside of the measuring tube 100 , and specifically, it is convenient to guide the liquid and facilitate the operation.

In conjunction with Figures 1 to 4, the impeller for a turbine flowmeter in this embodiment is specifically used as follows: a fixing cylinder 220 and a connecting sleeve 230 are respectively sleeved on a fixing rod 210, and the connecting sleeve 230 is limited by the two fixing cylinders 220, thereby limiting the impeller 250, thereby improving the rotation stability of the impeller 250, and the impeller 250 is rotated by the flow of liquid. The impeller 250 is rotated by the impeller shaft 240, and the front end cover 200 is clamped on the front end of the measuring tube 100, so that the impeller 250 is embedded and installed in the measuring tube 100, and the rear end cover 270 is used to be connected with one end of the fixing rod 210 through the thread 260 and the screw hole 280, so that the rear end cover 270 is screwed on the rear end of the measuring tube 100, so that the front end cover 200 and the rear end cover are connected. The end covers 270 are respectively clamped on the front and rear ends of the measuring tube 100, so as to install and fix the impeller 250. When the rear end cover 270 is installed and fixed to the rear end of the measuring tube 100, it is convenient to squeeze one end of the fixing cylinder 220, so as to press and fix the fixing cylinder 220 and the connecting sleeve 230, thereby increasing the connection stability. The liquid will be introduced from the front end cover 200 into the measuring tube 100 through the guide hole 290 for flow detection, and then discharged from the guide hole 290 of the rear end cover 270. When it is necessary to disassemble the impeller 250, it is only necessary to rotate the rear end cover 270 to threadably disassemble the rear end cover 270 and one end of the fixing rod 210, and then operate the front end cover 200 to separate from the front end of the measuring tube 100, and slide the fixing cylinder 220 and the connecting sleeve 230 off the fixing rod 210 respectively.

FIG3-FIG4 shows a schematic diagram of the structure of a second embodiment of an impeller for a turbine flowmeter of the utility model. Please refer to FIG3-FIG4. Different from the above-mentioned embodiment, a side wall of the front end cover 200 is provided with a clamping ring 300, and an inner wall of the clamping ring 300 is provided with a sealing ring 310. The clamping ring 300 is connected to the side wall of the front end cover 200 through the sealing ring 310. A filter screen 320 is provided on the inner side of the clamping ring 300. Specifically, the clamping ring 300 facilitates the installation of the filter screen 320, and is convenient for installation or disassembly. The sealing ring 310 facilitates the sealing of the connection between the retaining ring 300 and the front end cover 200, and the filter screen 320 facilitates the filtering of impurities in the liquid to reduce internal blockage caused by impurities. At the same time, when the liquid passes through the filter screen 320 and enters the measuring tube 100, the liquid is introduced into the measuring tube 100 through a plurality of filter holes on the filter screen 320, thereby dispersing the impact pressure and reducing the damage to the impeller 250 caused by the large impact force of the liquid, so that the impeller 250 used in the turbine flowmeter is not easy to be damaged and is convenient for use.

Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims (7)

1. An impeller for a turbine flowmeter, characterized in that it comprises a measuring tube (100) and a front end cover (200), wherein the front end cover (200) is arranged at the front end of the measuring tube (100), a fixing rod (210) is arranged on the side wall of the front end cover (200), a fixing cylinder (220) and a connecting sleeve (230) are arranged on the side wall of the fixing rod (210), the connecting sleeve (230) is arranged between two fixing cylinders (220), and an impeller shaft (240) is arranged on the side wall of the connecting sleeve (230), A plurality of impellers (250) are arranged on the side wall of the impeller shaft (240); a thread (260) is arranged on one end of the fixing rod (210); a rear end cover (270) is arranged at the rear end of the measuring tube (100); a screw hole (280) is arranged on the inner wall of the rear end cover (270); the fixing rod (210) and the rear end cover (270) are connected via the thread (260) and the screw hole (280); and the side walls of the front end cover (200) and the rear end cover (270) are both provided with a guide hole (290). 2. An impeller for a turbine flowmeter according to claim 1, characterized in that: a side wall of the front end cover (200) is provided with a retaining ring (300), an inner wall of the retaining ring (300) is provided with a sealing ring (310), the retaining ring (300) is connected to the side wall of the front end cover (200) through the sealing ring (310), and a filter net (320) is provided on the inner side of the retaining ring (300). 3. An impeller for a turbine flowmeter according to claim 1, characterized in that a nut (400) is provided at one end of the fixing rod (210), and the nut (400) is movably connected to the rear end cover (270). 4. An impeller for a turbine flowmeter according to claim 1, characterized in that a turbine flowmeter body is provided on the side wall of the measuring tube (100). 5. An impeller for a turbine flowmeter according to claim 1, characterized in that the side walls of the front cover (200) and the rear cover (270) are both provided with anti-slip grooves. 6. An impeller for a turbine flowmeter according to claim 1, characterized in that the front end cover (200) and the rear end cover (270) are symmetrically arranged, and the front end cover (200) and the rear end cover (270) are connected by a fixing rod (210). 7. An impeller for a turbine flowmeter according to claim 1, characterized in that: a plurality of guide holes (290) are provided, and the guide holes (290) are communicated with the inside of the measuring tube (100).