CN111649787A - A core-pulling gas turbine flowmeter - Google Patents

Abstract

The invention relates to a core-pulling gas turbine flowmeter, which belongs to the technical field of measurement and detection. The core base, the casing and the core base are provided with communicating fluid passages, and both ends of the fluid passages are provided with openings on the outer periphery of the casing; the fluid passage in the core base is provided with an impeller shaft, one end of the impeller shaft is provided with an impeller, and the impeller shaft is arranged at one end. The other end of the axle is provided with a signal plate; the signal plate is connected with the intelligent totalizer through the sensor provided on the movement base. The present invention uses a modular design inside the detachable core base, and is provided with a shielding sleeve, a secondary rectifier, an impeller, a rear guide and a signal plate. The signal plate is arranged in the shielding sleeve to avoid strong magnetic interference, and the module The integrated design is convenient for daily maintenance, maintenance and repair, which further improves the service life of the flowmeter.

Description

A core-pulling gas turbine flowmeter

technical field

The invention relates to a core-pulling gas turbine flowmeter, which belongs to the technical field of measurement and detection.

Background technique

Gas turbine flowmeter is a kind of velocity flowmeter, which has the advantages of high accuracy, good repeatability, simple structure, wide measurement range, small pressure loss and convenient maintenance. It is widely used in petroleum, chemical, metallurgy, and urban gas pipes. In particular, it is widely used in the measurement of urban gas and pipeline network transmission and distribution; however, traditional gas turbine flowmeters are difficult to maintain and maintain on pipelines, which may easily lead to inaccurate measurement data and serious damage to core components. Therefore, there is a need in the art for a gas turbine flowmeter that is easy to maintain and maintain on the pipeline.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the technical problem that the maintenance and maintenance of the traditional gas turbine flowmeter on the current transmission pipeline is difficult.

In order to achieve the purpose of solving the above problems, the technical solution adopted by the present invention is to provide a core-pulling gas turbine flowmeter, which includes a casing, a core seat, an impeller, an impeller shaft, a signal plate, a sensor, a fluid channel and an intelligent product. A calculator; the casing is provided with a core seat, the casing and the core base are provided with a fluid channel that communicates with each other, and both ends of the fluid channel are provided with openings on the outer periphery of the casing; the fluid channel in the core seat is provided with a leaf The wheel shaft, one end of the impeller shaft is provided with an impeller, and the other end of the impeller shaft is provided with a signal plate; the signal plate is connected with the intelligent totalizer through the sensor provided on the core base.

Preferably, the casing is in the shape of a cylinder with an upper end open, and an installation hole for installing the core base is provided at the upper end opening.

Preferably, an intelligent totalizer is arranged above the core base.

Preferably, the fluid channel includes a front guide channel, a secondary rectifier channel and a rear guide channel; the casing and the core base are sequentially provided with a front guide channel, a secondary rectifier channel and a rear guide channel that communicate with each other. channel; the rotation plane of the impeller is perpendicular to the central axis of the fluid channel, and the fluid channel adjacent to the impeller is set as a secondary rectification channel; the secondary rectification channel is connected with the rear diversion channel through the impeller; A secondary rectifying device is arranged on the channel wall of the secondary rectifying channel.

Preferably, a sensor is provided on the core base between the intelligent totalizer and the core base.

Preferably, a shielding sleeve for avoiding strong magnetic interference is provided inside the core base between the sensor and the signal plate.

Preferably, a bearing frame is arranged in the fluid channel provided in the core seat, a bearing is arranged on the bearing frame, and an impeller shaft is passed through the bearing.

Preferably, the material for making the movement seat is aluminum alloy. .

Compared with the prior art, the present invention has the following beneficial effects:

The core-pulling gas turbine flowmeter of the present invention adopts modular design and manufacture inside the casing, and is provided with a magnetic shielding sleeve, a secondary rectifier, an impeller, a bearing frame, a rear guide, a bearing, a signal and a magnetic shielding sleeve in the core base. It is convenient for online maintenance, maintenance and repair, and avoids the deviation of flow meter measurement due to strong magnetic interference.

Description of drawings

Fig. 1 is a three-dimensional schematic diagram of the appearance of a core-pulling gas turbine flowmeter according to the present invention;

2 is a schematic structural diagram of a core-pulling gas turbine flowmeter of the present invention;

Reference signs: 1. Intelligent totalizer; 2. Movement seat; 3. Housing; 4. Front guide channel; 5. Secondary rectifying device; 6. Impeller; 7. Bearing; 8. Impeller shaft; 9 .signal plate; 10. shielding sleeve; 11. rear guide channel; 12 bearing frame; 21. sensor through hole one; 22. sensor through hole two; 31. mounting hole; 32. sensor; 33. through hole ;

Detailed ways

In order to make the present invention more obvious and easy to understand, preferred embodiments are hereby described in detail with the accompanying drawings as follows:

As shown in Figures 1-2, the present invention provides a core-pulling gas turbine flowmeter, comprising a casing 3, a core base 2, an impeller 6, an impeller shaft 8, a signal plate 9, a sensor 32, a fluid channel and an intelligent product Calculator 1; the casing 3 is provided with a core base 2, the casing 3 and the core base 2 are provided with fluid passages that communicate with each other, and both ends of the fluid passages are provided at the openings on the outer periphery of the casing 3; An impeller shaft 8 is arranged in the fluid channel, an impeller 6 is arranged at one end of the impeller shaft 8, and a signal plate 9 is arranged at the other end of the impeller shaft 8; connect. The casing 3 is formed into a cylindrical shape with an upper end open, and a mounting hole 31 for mounting the core base 2 is provided at the upper end opening. An intelligent totalizer 1 is arranged above the movement base 2 . The fluid channel includes a front guide channel 4, a secondary rectifier channel and a rear guide channel 11; the housing 3 and the core base 2 are sequentially provided with a front guide channel 4, a secondary rectifier channel and a rear guide channel 11. The rotation plane of the impeller 6 is perpendicular to the central axis of the fluid passage, and the fluid passage corresponding to the impeller 6 is set as the secondary rectification passage; the secondary rectification passage is connected with the rear diversion passage 11 through the impeller 6; A secondary rectification device 5 is arranged on the channel wall of the secondary rectification channel. A sensor 32 is provided on the core base 2 between the intelligent totalizer 1 and the core base 2 . A shielding sleeve 10 for avoiding strong magnetic interference is provided inside the core base 2 between the sensor 32 and the signal disc 9 . A bearing frame 12 is provided in the fluid channel provided in the core base 2 , the bearing frame 12 is provided with a bearing 7 , and an impeller shaft 8 is passed through the bearing 7 . The movement base 2 is made of aluminum alloy.

A core-pulling gas turbine flowmeter of the present invention includes a casing 3, a front guide channel 4, a secondary rectifier 5, an impeller 6, a bearing frame 12, a rear guide channel 11, a shielding sleeve 10, a bearing 7, The signal plate 9 , the sensor 32 and the intelligent totalizer 1 also include a core base 2 , both ends of the core base 2 are open and installed in the through-flow holes 33 of the casing 3 , the bearing frame 12 , the rear guide channel 11 is installed in the core base 2, wherein the secondary rectifying device 5 and the shielding sleeve 10 are located on the front and rear sides of the core base 2, the rear diversion channel is installed in the shielding sleeve 10, and the impeller shaft 8 of the impeller 6 is installed through the bearing 7. On the bearing frame 12 and the impeller 6 is located between the secondary rectifying device 5 and the bearing frame 12, the signal disc 9 is installed on the impeller shaft 8 and is located between the bearing frame 12 and the rear guide channel 11; The wall and the shielding sleeve 10 are provided with through holes corresponding to the sensor 32. The sensor passes through the first hole 21 and the sensor through the second hole 22; the inner end of the sensor 32 is signally connected to the signal plate 9, and the outer end of the sensor 32 is connected to the intelligent The calculator 1 is connected, and the intelligent calculator 1 is installed on the movement base 2 . The movement base 2 is made of aluminum alloy material. The movement base 2 is set to be square. The movement base 2 and the casing 3 are fixed with 8 hexagon socket screws, which have an ingenious structure and a beautiful appearance.

Referring to Figures 1 and 2, a core-pulling gas turbine flowmeter is shown in the figures, including a casing 3, a front guide channel 4, a secondary rectifier 5, an impeller 6, a bearing frame 12, and a rear guide The channel 11 , the bearing 7 , the signal plate 9 , the shielding sleeve 10 , the sensor 32 and the intelligent totalizer 1 also include a core base 2 .

The casing 3 is cylindrical as a whole, and the upper end of the casing 3 is provided with a mounting hole 31 for mounting the core base 2, and the side surface of the casing 3 is provided with a through hole 33 for passing fluid, and the front guide channel 4 is mounted on the In the through hole 33, the core base 2 is also provided with a fluid channel for passing fluid, the secondary rectifier 5 and the shielding sleeve 10 are respectively on both sides of the core base 2, and the rear guide channel 11 is installed on the shielding sleeve 10. In order to prevent the secondary rectifying device 5 and the shielding sleeve 10 from moving back and forth inside the fluid passage hole, and further improve the stability of the shielding sleeve 10 inside the fluid passage hole, the secondary rectifying device 5 and the shielding sleeve 10 and the core seat 2 It is fixed by countersunk head screws, with ingenious structure and beautiful appearance.

The bearing frame 12 is installed in the core base 2 , and the bearing frame 12 is fixed between the secondary rectifying device 5 and the shielding sleeve 10 . The impeller shaft 8 of the impeller 6 is installed on the bearing frame 12 through the bearing 7, and the signal plate 9 is installed on the impeller shaft 8 and is located between the bearing frame 12 and the rear guide channel 11. When the fluid enters the housing 3, it first passes through the front The diversion channel 4 enters the secondary rectifying device 5 to stabilize the flow, which slows down the impact force of the fluid on the impeller 6, and the impeller 6 rotates under the push of the fluid, thereby driving the impeller pump 8 to rotate, and the other end of the impeller shaft 8 is installed There is a signal plate 9 , which further drives the signal plate 9 to rotate, thereby generating an electrical pulse signal, and finally the fluid flows out of the housing 3 under the guidance of the rear guide channel 11 .

On the body wall of the core base 2 and the casing wall of the shielding sleeve 10, there are a sensor passing hole 21 and a sensor passing hole 22 corresponding to the sensor, and the sensor 32 wire is passed through the core base 2 and the shielding. The sensors on the sleeve wall of the sleeve 10 pass through the holes 21 and 22, and then the intelligent totalizer 1 is installed on the core base 2 through the installation holes, so that the inner end of the sensor 32 is connected to the signal plate 9, and the outer end is connected to the intelligent totalizer 1. Totalizer 1 signal connection.

In this embodiment, the core seat 2 is made of high-quality aluminum alloy, and after surface treatment, the anti-corrosion performance is improved, and the internal service life of the core-pulling gas turbine flowmeter is further improved.

In summary, the core-pulling gas turbine flowmeter of the present invention adopts a modular design inside the core base 2, and is provided with a shielding sleeve, a secondary rectifier, an impeller, a bearing, a bearing frame, a rear guide, and a signal plate. The signal plate is set in the shielding sleeve to avoid strong magnetic interference, and the modular design is convenient for daily maintenance, maintenance and repair, which further improves the service life of the flowmeter.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form or substance. It should be pointed out that those of ordinary skill in the art can also Several improvements and additions have been made, and these improvements and additions should also be regarded as the protection scope of the present invention. All those skilled in the art, without departing from the spirit and scope of the present invention, can utilize the above-disclosed technical content to make some changes, modifications and equivalent changes of evolution, all belong to the present invention. Equivalent embodiments; at the same time, any modification, modification and evolution of any equivalent changes made to the above embodiments according to the essential technology of the present invention still fall within the scope of the technical solutions of the present invention.

Claims (8)

1. a core-pulling gas turbine flowmeter, characterized in that: comprising a casing, a core seat, an impeller, an impeller shaft, a signal disc, a sensor, a fluid channel and an intelligent integrator; the casing is provided with a core The inner part of the casing and the core base is provided with a communicating fluid channel, and both ends of the fluid channel are provided with openings on the outer periphery of the casing; the fluid channel in the core base is provided with an impeller shaft, one end of the impeller shaft is provided with an impeller, and the impeller shaft is provided with an impeller shaft. The other end is provided with a signal plate; the signal plate is connected with the intelligent totalizer through the sensor provided on the movement base. 2 . The core-pulling gas turbine flowmeter according to claim 1 , wherein the casing is in a cylindrical shape with an open upper end, and an installation hole for installing the core base is provided at the upper end opening. 3 . 3 . The core-pulling gas turbine flowmeter according to claim 1 , wherein an intelligent totalizer is arranged above the core base. 4 . 4. A core-pulling gas turbine flowmeter according to claim 1, characterized in that: the fluid channel comprises a front guide channel, a secondary rectification channel and a rear guide channel; the housing and the core The interior of the seat is sequentially provided with a front diversion channel, a secondary rectification channel and a rear diversion channel; the rotation plane of the impeller is perpendicular to the central axis of the fluid channel, and the fluid channel adjacent to the impeller is set as the secondary rectification channel; The secondary rectification channel is connected with the rear guide channel through the impeller; the secondary rectification device is arranged on the channel wall of the secondary rectification channel corresponding to the impeller. 5 . The core-pulling gas turbine flowmeter according to claim 4 , wherein a sensor is provided on the core base between the intelligent totalizer and the core base. 6 . 6 . The core-pulling gas turbine flowmeter according to claim 5 , wherein a shielding sleeve for avoiding strong magnetic interference is provided inside the core base between the sensor and the signal plate. 7 . 7. A core-pulling gas turbine flowmeter according to claim 6, characterized in that: the fluid channel provided in the core seat is provided with a bearing frame, the bearing frame is provided with a bearing, and the bearing passes through it. With impeller shaft. 8 . The core-pulling gas turbine flowmeter of claim 7 , wherein the core base is made of aluminum alloy. 9 .

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