CN213270439U

CN213270439U - Horizontal low cavitation magnetic drive pump with temperature monitoring function

Info

Publication number: CN213270439U
Application number: CN202021611247.4U
Authority: CN
Inventors: 徐德富; 王晓明; 王嘉鹏; 徐毓军
Original assignee: Jiangsu Xintengyu Fluid Equipment Manufacturing Co ltd
Current assignee: Jiangsu Xintengyu Fluid Equipment Manufacturing Co ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2021-05-25
Anticipated expiration: 2030-08-06

Abstract

The utility model discloses a take horizontal low cavitation magnetic drive pump of temperature monitoring, be equipped with temperature monitor between pump body upside and the separation sleeve, the pump shaft passes the pump cover, is equipped with the impeller between the pump cover and the pump body, and this impeller is open radial structure, the outside of impeller is equipped with the inducer in pump body import position department. The utility model discloses install the inducer additional in the import of pump, can reduce the cavitation surplus numerical value of pump, improved the anti cavitation performance of pump, install temperature detect ware additional at the spacer sleeve position simultaneously and be used for monitoring the inside temperature variation that leads to because medium gasification of spacer sleeve. When the temperature exceeds the set value, the temperature monitor can transmit the temperature change information to the DCS control room to remotely control the operation state of the pump.

Description

Horizontal low cavitation magnetic drive pump with temperature monitoring function

Technical Field

The utility model relates to a magnetic drive pump, in particular to take horizontal low cavitation magnetic drive pump of temperature monitoring.

Background

The magnetic pump uses the magnetic force of the permanent magnet to realize the transmission of torque, namely, the torque output by the motor is transmitted to the impeller through the magnetic coupler, thereby achieving the purpose of conveying liquid medium. However, in the magnetic pump, the pump shaft and the inner magnetic device are completely sealed by the pump body and the spacer sleeve, and the temperature condition of the liquid medium to be conveyed in the pump body cannot be known at the outer side. Meanwhile, in the process of conveying the liquid medium by the magnetic pump, the liquid medium is easy to cause the phenomena of steam condensation, bubble breakage, striking damage to the metal blade and vibration when the inlet pressure of the pump is smaller than the saturated steam pressure of the liquid medium. Therefore, the magnetic pump is optimally improved by additionally arranging the temperature detector at the position of the isolation sleeve in the magnetic pump and additionally arranging the inducer at the inlet of the pump.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an install the inducer additional in the import of pump for around flowing the pressure of inducer blade even, produce the low pressure position far away from the import, and can make the bubble that produces condense within the inducer, install temperature detector additional in the isolation cover position simultaneously, be used for monitoring the inside temperature variation that leads to because medium gasification of isolation cover.

In order to solve the technical problem, the utility model provides a following technical scheme:

the horizontal low-cavitation magnetic pump with the temperature monitoring function mainly comprises a pump body, a pump cover, a pump shaft, an impeller, an inner magnetic rotor, an outer magnetic rotor, an isolation sleeve and a motor, wherein the inner magnetic rotor is fixedly arranged at the shaft end of the pump shaft, the outer magnetic rotor is arranged at the shaft end of the motor, the isolation sleeve is arranged between the inner magnetic rotor and the outer magnetic rotor and is tightly connected with the pump cover in a sealing mode, the pump body, the pump cover and the isolation sleeve form a closed pump cavity, a temperature monitor is arranged between the upper side of the pump body and the isolation sleeve, the pump shaft penetrates through the pump cover, the impeller is arranged between the pump cover and the pump body and is of an open radial structure, and an inducer is arranged at the position of an inlet.

Preferably, the inner side of the inner magnet rotor is connected with a thrust ring, the outer side of the pump shaft of the inner magnet rotor is further provided with a shaft sleeve and a sliding bearing, and a connecting frame is further arranged between the pump body and the motor.

Preferably, the number of the vanes of the inducer is 2-5, the inlet angle of the vanes is 8-16 degrees, the turbidimetric revolution of the inducer is 1500-3000, and the inducer is made of aluminum alloy or carbon steel.

Preferably, the impeller is of an open radial structure.

Further preferably, the temperature monitor is provided with a temperature sensing system and is electrically connected with the DCS control room.

Advantageous effects

The utility model discloses install the inducer additional in the import of pump, the inducer belongs to axial-flow type impeller, has characteristics such as the blade is grater thick density is great, import angle of attack is less, great import flow area, import blade thickness are thinner for the pressure of stream-bypassing inducer blade is even, and it is far away from the import to produce the low pressure position, and can make the bubble that produces condense within the inducer, thereby has reduced the cavitation surplus numerical value of pump, has improved the anti cavitation performance of pump.

And secondly, the temperature detector is additionally arranged at the position of the isolation sleeve and is used for detecting the temperature change inside the isolation sleeve caused by medium gasification. When the temperature exceeds the set value, the temperature monitor can transmit the temperature change information to the DCS control room to remotely control the operation state of the pump.

Drawings

FIG. 1 is a schematic view of the cross-sectional structure of the low cavitation magnetic pump of the present invention;

in the figure, 1, inducer; 2. a pump body; 3. an impeller; 4. a pump cover; 5. a pump shaft; 6. a temperature monitor; 7. a sliding bearing; 8. a shaft sleeve; 9. a thrust ring; 10. an inner magnetic rotor; 11. an isolation sleeve; 12. an outer magnetic rotor; 13. a coupling frame; 14. an electric motor.

Detailed Description

The following description is of the preferred embodiments of the present invention, which are provided for illustration only and not for limiting the invention.

Example 1

As shown in fig. 1, a horizontal low cavitation magnetic pump with temperature monitoring mainly comprises a pump body 2, a pump cover 4, a pump shaft 5, an impeller 3, an inner magnetic rotor 10, an outer magnetic rotor 12, an isolation sleeve 11 and a motor 14, wherein the inner magnetic rotor 10 is fixedly installed at the shaft end of the pump shaft 5, the outer magnetic rotor 12 is installed at the shaft end of the motor 14, the isolation sleeve 11 is arranged between the inner magnetic rotor 10 and the outer magnetic rotor 12, the isolation sleeve 11 is tightly connected with the pump cover 4 in a sealing manner, the pump body 2, the pump cover 4 and the isolation sleeve 11 form a closed pump cavity, a temperature monitor 6 is arranged between the upper side of the pump body 2 and the isolation sleeve 11, the pump shaft 5 penetrates through the pump cover 4 and the pump body 2, and an inducer 1 is arranged at the inlet position of the pump body.

The inner side of the inner magnet rotor 10 is connected with a thrust ring 9, the outer side of the pump shaft of the inner magnet rotor 10 is also provided with a shaft sleeve 8 and a sliding bearing 7, and a connecting frame 13 is also arranged between the pump body 2 and the motor 14.

The inducer 1 has 5 blades, the inlet angle of the blades is 8 degrees, the turbidimetric revolution of the inducer 1 is 1500-3000, and the inducer 1 is made of aluminum alloy or carbon steel.

The impeller 3 is of an open radial structure.

The temperature monitor is provided with a temperature sensing system and is electrically connected with the DCS control room.

Although the present invention has been described in detail with reference to the foregoing examples, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A horizontal low cavitation magnetic drive pump with temperature monitoring mainly comprises a pump body (2), a pump cover (4), a pump shaft (5), an impeller (3), an inner magnetic rotor (10), an outer magnetic rotor (12), an isolation sleeve (11) and a motor (14), wherein the inner magnetic rotor (10) is fixedly arranged at the shaft end of the pump shaft (5), the outer magnetic rotor (12) is arranged at the shaft end of the motor (14), the isolation sleeve (11) is arranged between the inner magnetic rotor (10) and the outer magnetic rotor (12), the isolation sleeve (11) is tightly connected with the pump cover (4) in a sealing way, the pump body (2), the pump cover (4) and the isolation sleeve (11) form a closed pump cavity, and is characterized in that a temperature monitor (6) is arranged between the upper side of the pump body (2) and the isolation sleeve (11), the pump shaft (5) penetrates through the pump cover (4), and the impeller (3) is arranged between the pump cover and the pump body, an inducer (1) is arranged at the position of an inlet of the pump body (2) on the outer side of the impeller (3).

2. The horizontal low-cavitation magnetic pump with the temperature monitoring function according to claim 1 is characterized in that a thrust ring (9) is connected to the inner side of the inner magnet rotor (10), a shaft sleeve (8) and a sliding bearing (7) are further arranged on the outer side of the pump shaft of the inner magnet rotor (10), and a connecting frame (13) is further arranged between the pump body (2) and the motor (14).

3. The horizontal low-cavitation magnetic pump with temperature monitoring as claimed in claim 1, characterized in that the inducer (1) has 2-5 blades, the inlet angle of the blades is 8-16 °, the inducer (1) has a turbidimetric air ratio revolution of 1500-3000, and the inducer (1) is made of aluminum alloy or carbon steel.

4. The horizontal low-cavitation magnetic pump with temperature monitoring of claim 1, characterized in that the temperature monitor (6) is provided with a temperature sensing system and is electrically connected with a DCS control room.

5. The horizontal low-cavitation magnetic pump with temperature monitoring as claimed in claim 1, characterized in that the impeller (3) is of an open radial structure.