Fireproof and leakproof system for high-temperature centrifugal pump
A centrifugal pump and leak-proof technology, which is applied to pumps, pump components, non-variable pumps, etc., can solve problems such as material leakage, mechanical seal deformation, and mechanical seal leakage, so as to reduce leakage, reduce losses, and avoid The effect of the expansion of the accident
Active Publication Date: 2015-03-25
DALIAN FUJIA DAHUA GASOLINEEUM CHEM
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, due to the high operating temperature and high pressure of the centrifugal pump, if the flushing effect of the mechanical seal self-flushing fluid is not good, or contains trace impurities, it will cause deformation or wear of the mechanical seal, resulting in leakage of the mechanical seal and fire caused by material leakage. , this kind of problem often occurs in petrochemical enterprises at home and abroad
The traditional centrifugal pump bearing box is designed as an open structure, and the tiny leakage of the mechanical seal can be directly discharged to the top of the pump base and released into the air
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0008] In order to deeply understand the fireproof and leakproof system of high temperature centrifugal pump figure 1 described as follows:
[0009] High-temperature centrifugal pump fire prevention and leakage system, including pump body 1, non-driving end bearing box 2, driving end bearing box 4 and shaft 14, non-driving end bearing box 2, driving end bearing box 4 are sealed in the pump body 1 The first bearing 8 is located in the closed cavity of the non-driving end bearing housing 2, and the second bearing 9 is located in the closed cavity of the drive end bearing housing 4; the shaft 14 passes through the first bearing 8, the pump body 1, and the second bearing 9 , And supporting and fixing; the non-driving end bearing box 2 is provided with a first air inlet 12 and a non-driving end condensation outlet 3, the first air inlet 12 is connected with the first gas pipe 10, and the first gas pipe 10 is provided There is a first air inlet valve 15; the drive end bearing box 4 is...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a fireproof and leakproof system for a high-temperature centrifugal pump, and belongs to the field of chemical equipment. The fireproof and leakproof system comprises a pump body, a non-driving-end bearing housing, a driving-end bearing housing and a shaft, the non-driving-end bearing housing and the driving-end bearing housing are of sealed structures and are fixed onto the pump body, a bearing is positioned in a sealed cavity of each bearing housing, the shaft penetrates through the bearings and the pump body and is fittingly fixed, a gas inlet and a condensate drain opening are disposed on each bearing housing, each gas inlet is connected with a gas pipeline, a gas inlet valve is disposed on each gas pipeline, the gas pipelines are connected with a gas delivery pipe, and a condensate drain valve is arranged on each condensate drain opening. The gas delivery pipe is connected with a gas supply device. Each bearing housing is provided with a pressure monitoring device. Opening and closing of each condensate drain valve are adjusted by a remote control device. The bearing housings at two ends of the pump are of the sealed structures after change, the fireproof and leakproof system is provided with vapor seals or gas seals, when seal leakage occurs, water vapor or nitrogen is filled into the pump via a control system, oil gas leakage is stopped, and fire accidents are prevented. Furthermore, combustion can be reduced by the aid of blowing and diluting effects of the water vapor or the nitrogen, fire is quickly extinguished, and accordingly loss is reduced.
Description
Technical field [0001] The invention relates to a high-temperature centrifugal pump fire-proof and leak-proof system, which belongs to the field of chemical equipment. Background technique [0002] Centrifugal pump is one of the moving equipment widely used in petrochemical production. The process medium has a large flow rate, high temperature, high outlet pressure, and it is poisonous and harmful, flammable and explosive. Once it leaks, it will cause huge losses to the enterprise. Traditional centrifugal pump bearings use mechanical seals at both ends to prevent material leakage. The principle of mechanical seal is to prevent material leakage by means of stuffing or blocking, separation, extraction or injection, flow resistance, and reverse transportation. However, due to the high operating temperature and high pressure of the centrifugal pump, if the mechanical seal has a poor flushing effect from the flushing liquid or contains trace impurities, it will cause the mechanical s...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/056
Inventor 宋维民张东石杜兴周世纬张亚东
Owner DALIAN FUJIA DAHUA GASOLINEEUM CHEM