CN203304223U

CN203304223U - Automatic purging-type heat exchanger

Info

Publication number: CN203304223U
Application number: CN2013203036896U
Authority: CN
Inventors: 张春铮; 张松; 白文海
Original assignee: Langfang D & G Machinery Technology Co Ltd
Current assignee: Langfang D&g Machinery Technology Co ltd
Priority date: 2013-05-30
Filing date: 2013-05-30
Publication date: 2013-11-27
Anticipated expiration: 2023-05-30

Abstract

The utility model relates to an automatic purging-type heat exchanger which comprises a pneumatic three-way valve, a booster pump, a pressure regulating valve, a heating part, a pneumatic valve, an air storage tank and an air compressor, wherein the pneumatic three-way valve, the booster pump, the pressure regulating valve and the heating part are sequentially connected with an oil outlet of a heavy oil tank; the pneumatic valve, the air storage tank and the air compressor are sequentially connected with the pneumatic three-way valve; the heating part is connected with an inlet of a pipeline. The automatic purging-type heat exchanger has a simple structure, is lower in cost and completely solves the problem of blockage of heavy oil in a main gun and a transmission pipeline.

Description

Automatically blow clearly the type heat exchanger

Technical field

The utility model relates to a kind of heat exchanger, particularly a kind ofly solves heavy oil master rifle inside and heavy oil transfer conduit blockage problem, has and automatically blow clearly the heat exchanger of function.

Background technology

Burner is the equipment that fuel delivery, atomising device, louver are combined by circuit.Heat exchanger is mounted between burner and oil tank, to fuel oil heat, the pretreated equipment such as pressurization.

Burner, according to the difference of using fuel, can be divided into light oil, heavy oil and oil-gas two-way burner.Wherein, heavy oil burner is the burner of combusting heavy oil; The heavy diesel fuel burner is can combusting heavy oil and the dual burner of two kinds of fuel of diesel oil.

Heavy oil is the residue mink cell focus after crude oil extracts gasoline, diesel oil, claims again fuel oil or boiler oil.The characteristics of heavy oil are that molecular weight is large, viscosity is high, and its viscosity is ten times of left and right of diesel oil, thus when burning heavy oil must carry out preheating, first be heated to 70-90 ℃, the work of just can starting shooting after its viscosity is reduced, burn.

For heavy oil burner, work as end-of-job, burner when shutdown, heavy oil abrim still in main rifle and transfer conduit.If heavy oil is not cleared out of to device, along with the decline of temperature, heavy oil can solidify gradually.Generally, while again working, all need, through conduction oil and the long preheating of heating wire, to make the heavy oil solidified again reduce viscosity, recover mobility, burner just can carry out work.But when temperature is too low or heavy oil quality when too poor, solidifying of heavy oil can be very serious, only relies on the preheating of conduction oil and heating wire, may be difficult to melt heavy oil, so that pipeline is unimpeded.In this case, can have a strong impact on follow-up project progress.Especially the lower area of temperature, northern China for example, the situation of heavy oil frozen plug pipeline is more obvious.

At present, because national conditions are limit, the fuel of state's inner burner adopts combustion oil (a kind of quality is more severe than heavy oil, and viscosity is higher, the oil plant that corrosivity is stronger, the domestic standard that there is no) in a large number.This makes the situation of pipeline blockage even more serious.

Common solution is at present: during end-of-job, close the heavy oil pipeline, open the diesel oil pipeline, use diesel oil to replace out heavy oil.That is, on the basis of existing equipment, add a set of diesel fuel tank and supporting pipeline, greatly improved equipment cost.And the severe combustion oil of many quality is understood and diesel oil generation chemical reaction on the market, generates the colloid substance of class sapropelitic, this has just more aggravated the blockage of burner master rifle and transfer conduit.

When another kind of solution commonly used is end-of-job, use compressed air to blow clearly main rifle, make heavy oil from nozzle ejection, the problem of stopping up to alleviate main rifle internal duct.But so not only caused, pollute and waste, and heavy oil directly is sprayed onto in drying and has brought very large potential safety hazard.

The utility model content

The purpose of this utility model is to propose a kind of type heat exchanger that automatically blows clearly, simple in structure, cost is lower, can solve in main rifle fully and heavy oil blockage problem in transfer conduit.

For achieving the above object, the utility model discloses a kind of type heat exchanger that automatically blows clearly, comprise the Pneumatic three-way valve, booster pump, pressure regulator valve and the heating part that with the oil-out of heavy oil tank, are connected successively, and the pneumatic operated valve, air accumulator and the air compressor machine that are connected successively with Pneumatic three-way valve, described heating part is connected with the entrance of pipeline.

By said structure, the utility model:

1, heavy oil spraying gun inside and heavy oil transfer conduit blockage problem are thoroughly solved, equipment is used and keeps in repair more simple and convenient;

2, can realize automatically blowing clearly, automaticity is high;

3, the present invention is simple in structure, and good reliability is easy to use;

When 4, pipeline enters work again, can not carry out preheating, save energy consumption;

5, application of the present invention will improve the technological process of complete equipment, improve the performance of complete equipment.

6, pollution and the potential safety hazard of heavy oil have been eliminated.

Detailed content of the present utility model can obtain by explanation described later and institute's accompanying drawing.

The accompanying drawing explanation

Fig. 1 is schematic diagram of the present utility model.

The specific embodiment

Below in conjunction with drawings and Examples, the specific embodiment of the present utility model is further described, following examples are only for the technical solution of the utility model more clearly is described, and can not limit protection domain of the present utility model with this.

As shown in Figure 1, the concrete technical scheme of implementing of the utility model is: automatically blow clearly the type heat exchanger, comprise the Pneumatic three-way valve, booster pump, pressure regulator valve and the heating part that with the oil-out of heavy oil tank, are connected successively, and the pneumatic operated valve, air accumulator and the air compressor machine that are connected successively with Pneumatic three-way valve, described heating part is connected with the entrance of pipeline.

When burner quit work, by the control of circuit, Pneumatic three-way valve and pneumatic operated valve were opened, heavy oil tank oil-out pipeline is blocked, pressure-air enters the heavy oil pipeline, and clear blowing-out blows booster pump, pressure regulator valve, heating part, pipeline and burner master rifle successively, and heavy oil is finally got back to heavy oil tank.After blowing clearly 30 seconds, pneumatic operated valve cuts out, the high pressure airline blocking-up, and clear blowing bundle, now heavy oil tank oil-out pipeline still is in off state, and a whole set of pipeline and main rifle inside keep clear.Until burner is while again starting, heavy oil tank oil-out pipeline just can be switched on.

Used pressure-air to blow clearly heavy oil transfer conduit and burner master rifle, wherein the access port position of pressure-air is extremely important, in the heavy oil exit of heavy oil tank, and as far as possible near oil-out.In case use is blown clearly, pressure-air just can blow clearly all pipelines and main rifle like this, and heavy oil is directly blown back heavy oil tank, and it is unimpeded that whole pipeline keeps.When again going into operation, do not need preheating, the heavy oil in heavy oil tank flows directly in unimpeded pipeline, waits heavy oil to circulate a little, and burner just can be started working.Pressure-air access pipeline adopts Pneumatic three-way valve and pneumatic operated valve, can realize automatically blowing clearly of pipeline and main rifle, uses convenient.

The above is only preferential embodiment of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims

1. automatically blow clearly the type heat exchanger, comprise the Pneumatic three-way valve, booster pump, pressure regulator valve and the heating part that with the oil-out of heavy oil tank, are connected successively, and the pneumatic operated valve, air accumulator and the air compressor machine that are connected successively with Pneumatic three-way valve, described heating part is connected with the entrance of pipeline.

2. the type heat exchanger that automatically blows clearly according to claim 1 is characterized in that: the access port position of pressure-air is in the heavy oil exit of heavy oil tank, and as far as possible near oil-out; Valve is used pneumatic operated valve, realizes automatically controlling.