CN200977519Y

CN200977519Y - Cleaning device for closed circulation water system

Info

Publication number: CN200977519Y
Application number: CN 200620150161
Authority: CN
Inventors: 孙元杰; 刘建英; 李正起; 王斌; 张健
Original assignee: Tianjin Pipe Group Corp
Current assignee: Tianjin Pipe Group Corp
Priority date: 2006-12-04
Filing date: 2006-12-04
Publication date: 2007-11-21
Anticipated expiration: 2016-12-04

Abstract

The utility model provides a closed circuit water system cleaning device, which comprises a priming valve, a compressed water pump, an inverted valve, a water outlet valve and a cut off valve orderly connected through the pipe line. An intensified filter plate is arrannged between the water return line formed by the connection of the cut off valve and the priming valve, a blow-off valve is arrannged at the front connecting pipeline of the intensified filter plate. The effect of the utility model is to adopt the intensified filter plate to utilize the compressed water pump as motivity for the cleaning device, the compressed water pump is opened for circuit water system cleaning, the large amount of waste and the sundries are entrapped before the intensified filter plate, and blown off by the blow-off valve equipped before the intensified filter plate. The utility model solved the problem that the mixture is easy to be damaged when the compressed water pump of the old closed circuit water system cleaning device is used as motivity; and when no motivity is used, the wastes are easy to sedimentate in the pipes and the device, causing erosion. By applying the utility, the iron filings, the welding spatters and the particles of other construction materials detained in the inner part of the pipes during the construction are thoroughly cleaned up.

Description

The closed circulating water system system cleaning device

Technical field

The utility model relates to a kind of cleaning device of Treatment of Industrial Water technology closed cycle water system.

Background technology

It is extremely important that general steel-making closed cycle water piping system is installed the cleaning of cleaning, putting into operation for the first time in the back, if doing well, this work can bring many hidden danger to production, dirt in the first system, foreign material might damage water pump vane, cause water system unusual, directly endanger the safety of process for making equipment, consequence is serious.It two is that suspended particulate in the water system is deposited in equipment and the pipeline, can cause inhomogeneous precipitation, produces electrochemical corrosion, damage equipment and pipeline.Its three, bigger impurity may stop up the steelmaking equipment service pipe, causes cooling effect not good, hot-spot, serious meeting damages the process equipment of steel-making.Because this system is by external design, the expert of foreign country adopts the method for cleaning as shown in Figure 1 to this system, open water injection valve 1, with the water injected system, open water pump 2, be used as power with water pump, make water circular flow in system, and establish the blowdown blind plate at the low spot of system, open the blowdown of blowdown blind plate after the termination of pumping, thereby reach the purpose of pipe blow-through.There are the bulk foreign material directly to damage water pump vane in the method such as the system, in cleaning process, often avoid the method.

As shown in Figure 2, the most frequently used method is unpowered cleaning, and the main minimum point is established blind plate in system, opens water injection valve 1, fills with water to system, closes water injection valve, opens blind plate 6 and discharges water, 2 to 3 times repeatedly.The cleaning process of whole system is the static pressure cleaning by water.Because very low some impurity that make of flow velocity of water may be deposited in pipeline and the equipment, shown in deposition dirt 7, deposition foreign material 8 among Fig. 2, cause local inhomogeneous deposition, and these uneven depositions can produce potential difference, form electrochemical corrosion, equipment and pipeline are damaged, and cleaning performance is also undesirable.The utility model adopts to increase in system and strengthens dam effectively foreign material and being removed of filter plate, finishes cleaning.

Summary of the invention

The purpose of this utility model just provides a kind of closed circulating water system system cleaning device, increases in the closed cycle water system and strengthens filter, utilizes water pump to clean for power, dirt, foreign material do not deposit in the system, with the flow regime operation, before filter plate, be trapped, improve the effect of cleaning.

For achieving the above object, the technical solution adopted in the utility model provides a kind of closed circulating water system system cleaning device, include the water injection valve, water pump, non-return valve, outlet valve, the stop valve that connect successively by pipeline, wherein: be connected to form at stop valve and water injection valve between the pipeline of backwater and be provided with the enhancing filter plate, on the front end connecting line that strengthens filter plate, be provided with blowoff valve.

Effect of the present utility model is to adopt to strengthen the cleaning device that filter plate utilizes water pump to be used as power, and opens water pump and carries out the water wash cycles, before a large amount of dirt, foreign material are trapped within and strengthen filter plate in cleaning process, by the blowoff valve blowdown before the filter plate.Generally repeatedly 2 to 3 times, system is capable of washing clean.This device solves original closed cycle water system have water pump to be used as power when cleaning in cleaning, foreign material damage water pump easily; During unpowered cleaning, dirt is deposited on easily in pipeline and the equipment and causes corrosion.By this device the particle of welding slag, iron filings and other construction material etc. that are trapped in pipe interior in the construction is removed completely.

Description of drawings

Fig. 1 is the closed circulating water system system cleaning device structural representation of prior art;

Fig. 2 is another closed circulating water system system cleaning device structural representation of prior art;

Fig. 3 is a closed circulating water system system cleaning device structural representation of the present utility model.

Among the figure:

1, water injection valve 2, water pump 3, non-return valve 4, outlet valve

5, stop valve 6, blind plate 7, deposition dirt 8, deposition foreign material

10, strengthen filter plate 11, blowoff valve

The specific embodiment

Reaching embodiment in conjunction with the accompanying drawings is illustrated closed circulating water system system cleaning device of the present utility model.

As shown in Figure 3, water return pipeline end in the closed cycle water system is just set up on the place ahead pipeline that strengthens filter plate 10, strengthening filter plate 10 between stop valve 5 and water injection valve 1 are connected to form the pipeline of backwater blowoff valve 11 is installed, utilize water pump 2 to be the wash cycles system and device of power, the key of this device is that utilization enhancing filter plate 10 is held back dirt, the foreign material in the system, this strengthens the flow velocity of filter plate 10 in will the assurance system, SR can not be too big, when strengthening filter plate 10 designs, decide on the operating mode and the whole system on-way resistance of water pump 2.

1, strengthening filter plate 10 design strengths should be foundation with water pump 2 nominal situations, should establish deep floor in the water (flow) direction dorsad of filter plate 10.

2, the aperture design that strengthens filter plate 10 is advisable with 3～5mm, filter opening quantity is decided on the lift and the SR of water pump, the design of the resistance of filter plate is advisable with 0.03～0.05MPa generally speaking, and the operating pressure higher system can suitably improve the design resistance of filter plate, but should not surpass 0.06MPa.

3, before the cleaning, system user confession, backwater should be closed, and by interim bypass pipe circulation flushing, flushing flow rate should be greater than 5% of system's design discharge.

4, along with the carrying out of cleaning, SR can increase gradually.When increasing to 0.1～0.12MPa, stop the operation of water pump 2, open blowoff valve 11 blowdowns among Fig. 3, so repeatedly.When SR tends towards stability and blowdown when not having obvious impurity particle, can be considered cleaning and finish.

5, after cleaning is finished, remove enhancing filter plate 10 and user's bypass pipe, the former design pipeline of recovery system.

This device concrete function is to realize like this.

As shown in Figure 3, in closed cycle water system scavenger circuit, increase filter 10, become a complete scavenger circuit with water injection valve 1, water pump 2, non-return valve 3, outlet valve 4, stop valve 5 and blowoff valve 11.When first cleaning, open water injection valve 1 to system's water filling, close water injection valve 1 after filling with water, open water pump 2, make system's band press operation.After system moved a period of time, flow reduced, and before foreign material, dirt are trapped within filter 10, stopped water pump 2 operations this moment, opened blowoff valve 11, made the water emptying in the system, extracted filter 10 out, and dirt, foreign material are removed.The filter 10 that cleans up in the insertion system, is closed blowoff valve 11 again, opens water injection valve 1, and wash cycles is carried out in water filling again 2 times, 3 to 5 times the dirt in the system, foreign material is removed totally so repeatedly, finishes cleaning.

Claims

1, a kind of closed circulating water system system cleaning device, include the water injection valve (1), water pump (2), non-return valve (3), outlet valve (4), the stop valve (5) that connect successively by pipeline, it is characterized in that: be connected to form at described stop valve (5) and water injection valve (1) to be provided with between the pipeline of backwater and strengthen filter plate (10), on the front end connecting line that strengthens filter plate (10), be provided with blowoff valve (11).