CN2334508Y

CN2334508Y - High-pressure water jet winged spray head

Info

Publication number: CN2334508Y
Application number: CN 97238790
Authority: CN
Inventors: 高子栋; 曹昊翔; 章芬
Original assignee: Changsha Institute of Mining Research Co Ltd
Current assignee: Changsha Institute of Mining Research Co Ltd
Priority date: 1997-08-25
Filing date: 1997-08-25
Publication date: 1999-08-25
Anticipated expiration: 2007-08-25

Abstract

The high-pressure water jet winged spray head 1 is characterized in that more than 3 wing 2 are additionally arranged at the tail part of the existing spray head, so that the maximum diameter d of the winged spray head 1 is slightly smaller than the inner diameter of a pipe to be washed, and a fan-shaped space 5 is arranged between two adjacent wing 2. Therefore, when the winged spray head 1 is used for cleaning the inner hole of the pipe, the original function of high-pressure water washing is kept, and the residues 7 adhered to the pipe wall 6 can be peeled off from the pipe wall along with the advance of the wing 2, so that the washing effect of the spray head is greatly improved.

Description

High-pressure water jet adds wing shower nozzle

The utility model relates to the tube bank cleaning device, and what specifically refer to Cleaning by High Pressure Water Jet equipment adds wing shower nozzle.

Be extensive use of devices such as tube bundle heat exchanger and evaporimeter in modern chemical industry enterprise, light industry enterprise and the smelting enterprise, because long-term the use and the interior influences such as solution's solute of flowing of tube bank, inside pipe wall generation fouling, time is of a specified duration more, the in-tube fouling densification, adhesion firmly must be washed with high-pressure water jet.When tube bank long (such as greater than person more than 10 meters), use general shower nozzle often to be difficult to clean up, still leave the residue that the strip outside is difficult to look into survey at inwall after washing, these residues have not only influenced the normal performance of tube bank heat conductivility, and the easier assembly that causes dirt when reusing.As removing these residues fully, must clean repeatedly, increased the cleaning cost on the one hand, clean repeatedly for a long time on the other hand and must reduce usage ratio of equipment, and might be because task is tight, manufacturer is eager to drive plan, and in the tube bank that still leaves residue, carry out the operation second time, the result has influenced product quality, causes inevitable loss.

The purpose of this utility model is at the defective in the above-mentioned cleaning, propose a kind of follow-on wing shower nozzle that adds, make in the high-pressure water shot flushing process, not only utilize the high-pressure hydraulic scrubbing, and on shower nozzle, increased the ability of utilizing the mechanical force scrubbing that advances, can greatly improve cleaning quality.

The design's scheme is, on the shower nozzle of original normally garden cylindricality, increase " wing " that the vertical section is tapered, this maximum outside diameter d that adds wing shower nozzle is more smaller than the internal diameter of the pipe that is cleaned, from the cross section, be gear-like, the tooth of gear is wing, how much deciding of wing according to the size of caliber, but minimum is 3, and between two adjacent two wings a sector space is arranged all, flows out for the residue that is cleaned out.

The design's is rational in infrastructure, makes simply, under the situation of the basic principle that does not change high-pressure water jet flushing pipe, has only improved the design of shower nozzle, can improve the effect of cleaning tube bank greatly.

The design is auspicious in conjunction with the accompanying drawings state as follows:

Fig. 1 is the design's a cutaway view,

Fig. 2 is the A-A section of Fig. 1,

Fig. 3 is for adding wing shower nozzle work schematic diagram.

1, adds wing shower nozzle 2, wing

3, high pressure water hole 4, nozzle

5, sector space 6, tube wall

7, residue

As depicted in figs. 1 and 2, the front portion (right side of Fig. 1) that adds wing shower nozzle 1 is the cone that has cone angle beta, also can be the Cylinder (not shown) that does not have cone angle, uniform several nozzles 4 that are communicated with high pressure water hole 3 before this cone.Add the afterbody (left side of Fig. 1) of wing shower nozzle 1 uniform wing 2, the number of wing 2 is decided according to the size of caliber, but minimum be 3 (Fig. 2 represents to have 6 wings).And between per two adjacent wings a sector space 5 is arranged all.If there is not above-mentioned sector space 5, then wing must be connected to a plate-like integral body, in case run into the pipeline of obstruction, shower nozzle will be forced to come-up, even may be ejected the mouth of pipe by the mixed liquor of water and residue.Wing 2 can also make nozzle be in the strongest eject position all the time to adding 1 guiding of wing shower nozzle and supporting role, and the basil α of wing end should be not more than 45 °.It is smaller that the maximum outside diameter d that adds wing shower nozzle 1 should be cleaned pore, makes to add wing shower nozzle and can pass through smoothly, and the thrust when wing 2 advances simultaneously can be peeled off (see figure 3) to the residue in the wall pipe 67 from tube wall.

Add the end of wing shower nozzle for pore, i.e. the cleaning of mouth of pipe place residue is also highly beneficial, because work the time can be supported on wing on the mouth of pipe, makes very soon to add wing shower nozzle and can enter in the pipe, has solved the shortcoming that existing shower nozzle is difficult to enter the mouth of pipe.In addition, for guarantee that adding wing shower nozzle can draw back from pipe, its afterbody also should have tapering.

The quantity that adds nozzle on the wing shower nozzle and layout and with modes such as being connected of high pressure water hole, all similar to existing conventional method, be not the protection domain that the design proposes.

Therefore, utilize the design's high-pressure water jet to add the wing shower nozzle cleaning hose period of the day from 11 p.m. to 1 a.m, not only keep the function that original water under high pressure cleans pore, and along with adding advancing of wing shower nozzle, the wing 2 peelable residues 7 that are bonded in tube wall 6.

Embodiment 1:

Clean the shell and tube evaporator of being made up of more than 300 seamless steel pipes with high-pressure water jet pressurization shower nozzle, bore is 50mm, pipe range 4m, and the in-tube fouling residue is thick to be 4-7mm, used water under high pressure is 76MPa, flow 70L/mm, every pipe on average cleaned 9 minutes; Wash back tube wall cleaning, noresidue.Shower nozzle as using, every takes 11 minutes, and residue is still arranged, and carries out secondary cleaning with adding wing shower nozzle again, also need clean 3 minutes.

Claims

1, a kind of high-pressure water jet that is provided with high pressure water hole (3) and nozzle (4) adds wing shower nozzle, it is characterized in that being provided with wing (2) at the afterbody that adds wing shower nozzle (1), and between adjacent two wings (2), is provided with sector space (5).

2, high-pressure water jet according to claim 1 adds wing shower nozzle, it is characterized in that the number of wing (2) can be decided according to the diameter that is rinsed pipe, but minimum 3 wings (2) must be arranged.