CN201066255Y

CN201066255Y - On-line automatic ball cleaning device of shell-and-tube heat exchanger

Info

Publication number: CN201066255Y
Application number: CNU2007200628567U
Authority: CN
Inventors: 舒丙丁
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-04-03
Filing date: 2007-04-03
Publication date: 2008-05-28
Anticipated expiration: 2017-04-03

Abstract

The utility model provides an on-line automatic rubber ball cleaning device for a shell and tube heat exchanger. The device is applicable in the condensers in the fire power industry and the condensers and evaporators of central air conditioners and other fields which are provided with shell and tube heat exchangers. The system is a water flow loop consisting of a ball collector 1, a ball feeder 2, solenoid valves 6, 7, 8 and 9, one-way valves 4 and 5, a water pump 13, ball valves 10 and 11 and a water 3 which are connected by pipelines. In the circulation process, ball feeding and collecting can be completed by the same water pump, which can be also completed automatically through on and off of the four solenoid valves. During the ball feeding process, the rubber balls erase the inner tube wall through a heat exchanger 12, to timely remove the scale deposit, so as to improve the working efficiency of the heat exchanger. During the ball collecting process, the rubber balls are withdrawn from a ball return to the ball feeder by the water pump; the ball feeder is provided with a screen plate with hole diameter smaller than the rubber balls, so that the rubber balls cannot go through the water pump. In addition, a water tank used to store water temporarily. The rubber balls are soft and made of polymer materials, the density of which is little bigger than that of the water after being soaked in water.

Description

The on-line automatic ball cleaning apparatus of a kind of shell and tube exchanger

Technical field

The device that the utility model provides can be applicable to the field that the condenser of condenser, central air-conditioning of power industry and evaporimeter etc. have shell-tube type heat exchange device.

Background technology

The shell and tube heat exchanger of central air-conditioning is after long-term the use; the etch of incrustation scale makes heat exchange efficiency seriously descend; the refrigeration efficiency ratio is had a greatly reduced quality; traditional cleaning method is to take end cap after shutdown earlier apart; with chemical medicinal liquid the copper pipe inwall is scrubbed; this mode is unfavorable for that promptly production also is unfavorable for environmental protection and bigger to the copper pipe injury, the more important thing is to lavish labor on resource.Present domestic part enterprise has adopted the mode of external pneumatic glueballs on-line cleaning, its cost height.Also have some systems to adopt the flow dynamic of water pipe self to annotate ball, receive ball with the mode of draining, there is water resource waste in the method, and it is low to annotate ball rate and ball collecting rate, and effect is unsatisfactory in the process of practical application.What the power industry condenser was used morely in addition is to adopt self-priming non-blocking rubber ball pump to annotate ball and receive ball as power, but because the market price costliness of this special water pump, majority needs import, and glueballs must pass through the pump housing, and also there is to a certain degree injury in ball.

Summary of the invention

The utility model provides the on-line automatic ball cleaning apparatus of a kind of shell and tube exchanger, solved tradition to property and will stop the drawback that the main frame operation could be operated at interval in the mode of the cleaning of shell and tube exchanger; The integrated level height of product improved automaticity, overcome mechanical cleaning and caused injury to equipment; Advance also to have overcome together and need the chemical addition pollution on the environment when conventional clean mode is cleaned.Whole cleaning device is to be led to centrifugal water pump and be connected a current loop of composition, placement sponge glueballs in the current loop by pipeline with the cooling water pipe of heat exchanger by 1 ball collecting device, 1 notes ball device, 4 magnetic valves, 2 one way stop peturn valves, 1 Daeporis.

Description of drawings

Fig. 1 system diagram

Fig. 2 ball return profile

The specific embodiment

Annotate the ball process: fill water in the water tank 3 when moving for the first time, the glueballs more bigger than heat exchanger 12 diameter of inner pipe adds from annotating ball device 2;

Ball valve

10,11 is opened, and magnetic valve 6,9 is opened, and

magnetic valve

7,8 cuts out; Operation water pump 13, glueballs is taken out of from annotating ball device 2 by water, enters heat exchanger 12 through check valve 5, ball valve 11; Close magnetic valve 6,9 and water pump 13.Glueballs is smeared wiping to inside pipe wall in this is crossed, and enters ball return 1 subsequently and finishes notes ball cleaning process.

Receive the ball process: magnetic valve 6,9 cuts out, and

electromagnetism

7,8 is opened; Operation water pump 13, glueballs is taken back from ball return 1 by water, is kept off in annotating ball device chamber by web plate through ball valve 10, check valve 4; Close

magnetic valve

7,8 and water pump 13, finish the ball process of receiving.The water that is retracted exists in the water tank 3 temporarily, with as the usefulness of annotating ball next time.

In these two processes, equate the running time of receiving ball and annotating ball, and the flow during water pump operation is less than the water amount of water tank, to guarantee that empty water and spilling water phenomenon can not appear in water tank.The intercycle is more than one hour each time, and the hot water that assurance is drawn back water tank from return pipe is lowered the temperature naturally, and glueballs is parked in and annotates in the ball device chamber in the process of not moving, and can not increase water resistance to the water route.

Claims

1. on-line automatic ball cleaning apparatus of shell and tube exchanger, it is characterized in that: whole cleaning device is to be annotated ball device, 4 magnetic valves, 2 one way stop peturn valves, the logical centrifugal water pump of 1 Daepori and be connected with the cooling water pipe of heat exchanger by pipeline by 1 ball collecting device, 1, the sponge glueballs is placed in a current loop of forming in the current loop.

2. the described ball collecting device of claim 1 is that a kind of level is installed the device of glueballs being regained notes ball device by water, and it is characterized in that: the exocoel of ball collecting device is manufactured by a short piece, and ring flange is equipped with at two ends; Screen pack is housed in the chamber, and screen pack becomes the taper shape of "＜" symbol, and the awl point leaves the circular port of 40-50 millimeter, and cone angle is between 20-40 °; Filter screen is installed to the sharp direction of awl along the awl end with the bar shaped steel, divides multilayer, and awl net gap is between the 4-10 millimeter, and awl is outer then to be reinforced with circular anchor ear setting, and the awl end and short tube limit are fixing with welding; Rotation was 6-9 ° when "＜" symbol net was installed, and made the awl point offset downward certain distance, was convenient to the easier withdrawal of glueballs; The net point is drawn outside the chamber with being weldingly connected with a little water pipe.