CN2895807Y

CN2895807Y - Efficient energy-saving and smart pump special for petro-chemical industry

Info

Publication number: CN2895807Y
Application number: CNU2006200729898U
Authority: CN
Inventors: 董洪志; 陈进
Original assignee: YINGLANG TECH Co Ltd JIANGSU
Current assignee: YINGLANG TECH Co Ltd JIANGSU
Priority date: 2006-04-29
Filing date: 2006-04-29
Publication date: 2007-05-02
Anticipated expiration: 2016-04-29

Abstract

The utility model relates to a high efficient energy-saving and smart special pump used for the petrochemical industry process which is the pump transportation technology field, the utility model uses the PLC control and frequency conversion regulating speed control system to realize the product intelligent and energy-saving control; by using the hydraulic structure, improving the sealing structure, optimizing the pump and parts structure, the pump and energy efficiency are significantly enhanced, the security and reliability are increased, and the service life is extended: (1) The pump efficiency is remarkably enhanced, compared to the domestic similar products, the efficiency is increased 3-5%,which is the same as the international similar products .(2) The system efficiency of the pump operation is markedly enhanced, 30% more than the bypass regulation system, the brake valve system. (3) A reliable pump sealing. And the media leakage is less than or equal to 0.05 ml/h.

Description

Energy-efficient and intelligent pump for petrochemical industry

Technical field:

The utility model relates to a kind of energy-efficient and intelligent pump for petrochemical industry, is used for petrochemical process, belongs to the pumping technology field.

Background technique

The petrochemical industry pump is an energy consumption equipment main in the petrochemical process unit, accounts for 59% and 26% of power consumption total amount in oil, the chemical industry respectively.Show according to data of literatures, pump is in running, because factors such as systems, the efficient of pump actual motion can not reach the value of design, have only about 80% of its regulation efficient, so the power-saving technology of pump comprises the efficient of pump self and the efficient of pump operation system.Existing centrifugal pump is when carrying liquid medium, medium all is from axial suction, radially discharge, because the flow direction of medium changes suddenly, caused the increase of energy loss, common impeller is when carrying out the entrance edge of blade design, generally long segment distance is arranged, be placed on after the front shroud radius of curvature, and to keep inlet side and axis angle be 45 °-60 ° from inlet side, the efficient of pump and suction performance are relatively poor relatively, in chemical engineering process, the demand of chemical medium is not invariable, the particularly flow parameter operation of parameter that generally can not be according to the rules, therefore require to carry out the isoparametric adjusting of flow, now Chang Yong regulating method is a flow limit method, promptly regulates the aperture of gate valve and carries out the adjusting of flow, when regulating gate valve, pump is in operation under the non-efficient state, has therefore consumed a large amount of energy.

The model utility content:

The purpose of this utility model provides a kind of energy-efficient and intelligent pump for petrochemical industry, solve above-mentioned all deficiencies that existing pump exists, realize in the running the pump parameter monitoring, potential faults is reported to the police, guarantee the system security of operation, automatically regulate according to the needs of technological process simultaneously, thereby reach energy-conservation purpose.

The purpose of this utility model is achieved through the following technical solutions, a kind of energy-efficient and intelligent pump for petrochemical industry, comprise the pump housing, rotary main shaft in the pump housing, the rotary main shaft front end connects solid impeller, the impeller rear end connect solid pump cover with the pump housing, the mechanical seal device that is provided with on the main shaft behind the pump cover, outer and the pump housing of mechanical seal device, pump cover connects solid suspension, main shaft outside the suspension is characterized in that through the motor that coupling connects the suction port of the pump housing is provided with signal emitter, and motor is connected to frequency variator, signal emitter, frequency variator connects the control module of setting, and the output of control module is external to be the control core platform with the PLC controller; The axial plane of the impeller and the pump housing is shaped as radially diagonal flow type.

The utility model has been realized the intellectuality of product and the control of energy-conservationization by adopting PLC control and frequency-converting speed-governing control system; By taking the improvement of hydraulic structure, sealing configuration, the optimization of pump and component structural, pump and energy consumption efficiency are significantly improved, safety reliability increases, prolong working life, (1) pump efficiency significantly improves, and more domestic like product phase specific efficiency will improve 3-5%, and will be suitable with international like product; (2) pump movement system efficient obviously improves, and the system that adopts bypass adjusting, gate valve to regulate has improved 30%; (3) pump seal is reliable, can make the leakage rate≤0.05ml/h of medium.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 monitors schematic diagram in the utility model;

Fig. 3 is a pump structure schematic representation in the utility model;

Fig. 4 is an impeller front and rear cover plate structural representation in the utility model;

Fig. 5 is a pumping type inclusion seal apparatus structure schematic representation in the utility model;

Among the figure, 1 pump housing, 2 impeller rings, 3 impellers, 4 impeller nuts, 5 casing wear rings, 6 pump covers, 7 main shafts, 8 mechanical seals, 9 machine sealed covers, 10 suspensions, 11 motor, 12 sensors, 13 frequency variators, 14PLC controller, 15 control modules, 16 separation sleeves, 17 operating consoles, 18 Field buss, 19 coupling, 20 bases, 21 single mechanical end face seal rotating rings, 22 single mechanical end face seal dynamic and static ring, 23 pumping type double mechanical seals.

Embodiment:

Further specify the utility model in conjunction with the accompanying drawings and embodiments, the utility model is by the pump housing 1, rotary main shaft 7 in the pump housing 1, rotary main shaft 7 front ends connect solid impeller 3, impeller 3 rear ends connect solid pump cover 6 with the pump housing 1, the mechanical seal device 8 that is provided with on the main shaft 7 behind the pump cover 6, the mechanical seal device 8 outer and pump housings 1, pump cover 6 connects solid suspension 10, the motor 11 that suspension 10 outer main shafts 7 connect through coupling, the signal emitter 12 that the suction port of the pump housing 1 is provided with, frequency variator 13 and control module that motor 11 connects, what the output of control module was external is that the control core platform constitutes with the PLC controller; Impeller 3 is shaped as radially diagonal flow type with the axial plane of the pump housing 1, impeller 3 is 10-15 ° with the axial plane dipping angle of the pump housing 1, the import radius of curvature of impeller is strengthened, and entrance edge of blade and outlet edge joint are closely parallel, and the radius of curvature size of front and rear cover plate is by near and make the active length increase of blade; The front and rear cover plate of impeller 3 is a plum blossom shape, is equivalent to front and rear cover plate is cut, and reduces the disk friction loss of impeller; The entrance edge of blade of impeller 3 extends to suction eye, and the angle of inlet side and axis is 5-15 °, thus the active length that has prolonged impeller, and entrance edge of blade has increased the space of import than the obvious attenuate of intermediate portion; Mechanical seal device 8 is a pumping type inclusion seal device, has reduced the working pressure of first order sealing, has increased the reliability of machine envelope work, and the seam that bears pressure is arranged between sealing plane; The dynamic and static ring transposition of single mechanical end face seal in the first order sealing of pumping type inclusion seal device, the second level is sealed into the pumping type double mechanical seal, is equivalent to front and rear cover plate is cut, and reduces the disk friction loss of impeller; Between pumped medium and the cooling medium separation sleeve is set; Each transition shoulder in the main shaft 7 is fillet; PLC controller 14 in the utility model, control module 15, signal emitter 12 and frequency variator 13 all can adopt prior art and existing product.

Claims

1, a kind of energy-efficient and intelligent pump for petrochemical industry, comprise the pump housing, rotary main shaft in the pump housing, the rotary main shaft front end connects solid impeller, the impeller rear end connect solid pump cover with the pump housing, the mechanical seal device that is provided with on the main shaft behind the pump cover, outer and the pump housing of mechanical seal device, pump cover connects solid suspension, the motor that the outer main shaft of suspension connects through coupling, the suction port that it is characterized in that the pump housing is provided with signal emitter, motor is connected to frequency variator, signal emitter, frequency variator connects the control module of setting, and the output of control module is external to be the control core platform with the PLC controller; The axial plane of the impeller and the pump housing is shaped as radially diagonal flow type.

2, energy-efficient and intelligent pump for petrochemical industry according to claim 1, the axial plane dipping angle that it is characterized in that the impeller and the pump housing is 10-15 °.

3, energy-efficient and intelligent pump for petrochemical industry according to claim 1, the front and rear cover plate that it is characterized in that impeller is a plum blossom shape.

4, energy-efficient and intelligent pump for petrochemical industry according to claim 1 is characterized in that the entrance edge of blade of impeller extends to suction eye, and the angle of inlet side and axis is 5-15 °.

5, energy-efficient and intelligent pump for petrochemical industry according to claim 1 is characterized in that mechanical seal device is a pumping type inclusion seal device, has the seam that bears pressure between sealing plane.

6, energy-efficient and intelligent pump for petrochemical industry according to claim 5 is characterized in that the dynamic and static ring transposition of single mechanical end face seal in the first order sealing of pumping type inclusion seal device, and the second level is sealed into the pumping type double mechanical seal.

7, energy-efficient and intelligent pump for petrochemical industry according to claim 5 is characterized in that between pumped medium and the cooling medium separation sleeve being set.

8, energy-efficient and intelligent pump for petrochemical industry according to claim 1 is characterized in that each transition shoulder in the main shaft is fillet.