CN2775582Y - Shock wave type super charged heat exchanger - Google Patents

Abstract

The utility model relates to a novel supercharging steam-water heat exchanger of a shock wave type, which uses steam as the heat source and the dynamic force and fully uses the latent heat of the steam. When water is heated, the pressure of hot water can also be enhanced, and the novel supercharging steam-water heat exchanger is a product for replacing the existing steam-water heat exchanger and greatly saves the cost of operation and maintenance for users. The utility model comprises a novel steam lead-in tube, a casing, a closed water inflow chamber, a steam spray tube, a mixed supercharging diffusion tube and a running status detecting opening, wherein the steam lead-in tube and the casing are connected by a flange, and the casing and an outer tube are also connected by the flange. The steam spray tube is a venturi tube which contracts gradually and then expands gradually, and is fixed to the steam lead-in tube and the water inflow chamber by screw threads on the steam spray tube. The running status detecting opening is arranged on the mixed supercharging diffusion tube, and is in an integral structure with the mixed supercharging diffusion tube.

Description

Shock wave formula pressurised heat exchangers

Technical field

The utility model relates to a kind of novel carbonated drink direct heat exchanger that is used for industry and civil buildings hot water heating and hot water supply, especially relates to a kind of novel shock wave formula supercharging carbonated drink direct heat exchanger.

Background technology

When adopting traditional carbonated drink direct heat exchanger system, heat exchanger is a resistance element in system, that is to say that pressure by hot water behind the heat exchanger may be higher than the pressure of steam before the heat exchanger into never, does not promptly have function of increasing pressure.

The steam pressure that traditional carbonated drink direct heat exchanger requires is higher, and noise is big, and bulky.Though acoustic velocity-variable supercharging heat-exchanging system produced in USA has overcome preceding two drawback, but because its duty approaches critical condition, working environment (particularly steam pressure) is required harsh, when inflow temperature arrives more than 70 ℃, can cause the device duty not normal because two-phase fluid can not fully mix, be difficult to adapt to domestic condition at present.This device must be pulled down equipment, disintegrate when adjusting the internal clearance in addition, and very trouble can only be the staged adjustment, can't realize continuous adjustment; And this device does not have the running state monitoring device, running status that can't judgment device.

Existing carbonated drink direct heat exchanger attaching parts are many, are not easy sealing.

The utility model content

The purpose of this utility model is to overcome the weak point in the above-mentioned background technology, a kind of novel shock wave formula supercharging carbonated drink direct heat exchanger is provided, it is thermal source and power with steam, make full use of the latent heat of steam, water had not only been heated but also supercharging, and easy to adjust, wide accommodation can replace existing steam-water heat exchanger system.

For achieving the above object, the technical solution that the utility model adopts is as follows:

A kind of shock wave formula supercharging carbonated drink direct heat exchanger, it is characterized in that: comprise novel steam inlet tube 1, tubular circular shell 4, airtight intake chamber 3, mixing supercharging diffuser pipe 5 is welded in the tubular circular shell 4, tubular circular shell 4 place's vertical weldings at this mixing supercharging diffuser pipe 5 imports one end are connected to airtight intake chamber 3, this airtight intake chamber 3 is communicated with mixing supercharging diffuser pipe 5 imports one end, and tubular circular shell 4 imports one end of airtight intake chamber 3 opposite sides passes through flange, adjusting nut 8 is connected with steam inlet tube 1, this steam inlet tube 1 is by above-mentioned adjustment nut 8 fixed steam jet pipes 2, and the nozzle of this steam jet 2 is communicated with described airtight intake chamber 3 and 5 imports of mixing supercharging diffuser pipe.

Steam jet is fixed on steam inlet tube 1 and the tubular circular shell 4 by the screw thread on himself, steam jet 2 is the convergent Venturi tube of flaring again, mixing supercharging diffuser pipe 5 is integrated, and be provided with running status on the supercharging diffuser pipe 5 and detect mouthfuls 6 mixing, nozzle and the distance of mixing between the supercharging diffuser pipe can solve by adjusting nut 8, pass through teflon gasket 7 sealings between steam inlet tube and the shell.

Above-mentioned intake chamber 3, steam inlet tube 1, outlet pipe all are to be connected with Outer Tube in the flange mode.Also be to connect between steam inlet tube and the shell, mix supercharging diffuser pipe 5 and adopt integrated structure design with flange.

Distance between the said nozzle and the mixing tube mouth of pipe is continuously adjustable by adjusting nut 8.

Compared with prior art, the advantage and the effect that the utlity model has are as follows:

1, the utility model is thermal source and power with steam, make full use of the latent heat of steam, directly heating and pressurized hot water heating system water and production, life hot water, so steam-water heat exchanger, water circulating pump and condensate system in the alternative existing heat exchanger system, not only reduce investment outlay, and can save or reduce water circulating pump in the original system, economize on electricity 60-100%, improve more than the heat exchange efficiency to 99.3%, say that from energy-conservation and environmental angle meaning is all very great;

2, the utility model volume is little, need not take andron, installs and uses very conveniently, has significantly reduced capital expenditure, and can realize automatic operating.

3, the utility model does not have rotatable parts, and is not easy to wear, easy to maintenance; While is scaling not, so long service life can be used more than 10 years continuously;

Can reach the heating water supply and the return water temperature of national regulation when 4, the utility model is used in heating system, under water temperature condition from the beginning, domestic hot water supply leaving water temperature is 40 ℃～60 ℃, industrial hot water supply leaving water temperature is pressed customer requirements and is determined that noise of the present utility model also is up to state standards simultaneously;

5, the utility model is of many uses, not only can be used for the hot water heating and the hot water supply of industry and civil buildings, also can be used for swimming pool or other building, and can be used for cleaning equipment such as vehicle, oil truck, ship housing, and be used for fire-fighting fire extinguishing etc.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Symbol description among the figure:

1-steam inlet tube 2-steam jet

3-flume 4-tubular circular shell

5-mixing supercharging diffuser pipe 6-running status detects mouth

7-teflon gasket 8-adjusts nut

The specific embodiment

The function of this device is based upon on the basis of two-phase fluid latest technological achievements, design according to hydromechanical theory, because the compressibility of gas and liquid two-phase fluid substantially exceeds the compressibility of liquid or gas, as everyone knows, the spread speed of sound and the compressibility of medium are inversely proportional to, and promptly the big more then velocity of sound of the compressibility of medium is more little:

$a=\sqrt{\frac{\mathrm{dp}}{\mathrm{d\ρ}}}$

The speed of sound in liquid is about 1650m/s; Speed in gas is about 340m/s; If do not contain liquid in the medium, ratio beta=Vd/ (Vf+Vd) equals 1, and (Vd is the velocity of sound in the gas in the formula, Vf is a sound's velocity in liquid) if do not contain gas in the medium, then ratio is 0, because of the compressibility of two-phase fluid is bigger, so the velocity of sound in the two phase flow has only 5-20m/s.Generally represent the variation of pressure and the relation between the variable density with Mach number again in the physics, it is the index of liquid compressibility, square being directly proportional of this pressure ratio and Mach number:

$\frac{P_1}{{\mathrm{<figure-callout\; id="2"\; label="P"\; filenames="Y20042005878000091.png"\; state="\{\{state\}\}">P</figure-callout>}}_2}=1+{\mathrm{k\&beta;M}}^2$

P in the table ₁Be outlet pressure, P ₂Be inlet pressure.

Consider this feature of two phase flow, as long as can accomplish to reduce the velocity of sound, can be in the very slow two-phase fluid of speed (meaning under the situation of very low energy consumption) obtain Mach number greater than 1 effect.

If the two-phase flow speed that steam and water mix is 50m/s, the volume of gas and liquid is one than for the moment in the volume of mixture, and velocity of sound is 5m/s, then Mach number=10 P ₁/ P ₂≈ M ²≈ 100, and promptly Zhuan Zhi outlet pressure is 100 times of inlet pressure.Behind water or other liquid and the steam access to plant, directly mix and form uniform homogeneous blend, the initial velocity of sound of this mixture has minimum of a value, be far longer than the velocity of sound of mixture by the mixture speed of device, like this, can make Mach number reach higher value with less energy, after this, after the flowing velocity of mixture is reduced to gradually and is lower than the velocity of sound, will produce huge pressure and change.This shows that this device not only can play the effect of heat exchanger, can also play the effect of feed pump.

Saturated (or overheated) steam of certain pressure is with after water at low temperature is mixed, in narrower cross section, overcome sound barrier with the speed that is higher than velocity of sound, through condensing, the combined process of heat and mass momentum-exchange and diffusion plays intensification and supercharging double action to the outlet fluid, finish the transformation of kinetic energy to potential energy, generation is higher than the temperature and pressure of inlet, the process of finishing the work.

Below in conjunction with accompanying drawing the utility model is described in further detail:

As shown in Figure 1, the utility model comprises airtight flume 3, steam inlet tube 1 one ends are connected on the pipeline by flange, the other end passes through flange, adjusting nut 8 is connected with tubular circular shell 4, steam jet 2 stretches in the flume 3 and is communicated with flume 3, steam jet 2 is provided with screw, fixing by adjusting nut 8, teflon gasket 7 sealings are arranged before and after the nut, mix supercharging diffuser pipe 5 by being welded to connect on tubular circular shell 4, steam jet 2 can be adjustable continuously by adjusting nut 8 with the distance of mixing between the supercharging diffuser pipe 5, adjusts relative position by optimum condition under various parameters.Tubular circular shell 4 is connected on the pipeline by flange.Steam jet 2 is the convergent Venturi tube of flaring again.

During normal the operation, steam enters steam jet 2 and forms the supersonic speed vapor stream at nozzle exit through steam inlet tube 1, water is sucked flume 3 from Outer Tube, because steam and water are the submerged jets in the two phase flow, enter this device back and directly form an even matter steam, aqueous mixtures, its speed is greater than the velocity of sound of mixture, when meeting obstructions, can produce the pressure step shock wave, therefore export mixed-fluid pressure greater than inlet fluid pressure, utilize the pressure energy of steam, not only heated but also supercharging.

For adapting to different operating modes and parameter request, the utility model steam jet 2 is continuously adjustable by adjusting nut 8 with the distance of mixing between the supercharging diffuser pipe 5, by conversion steam jet 2 and the distance of mixing between the supercharging diffuser pipe 5, can adapt to different operating modes and parameter request, to reach best duty.

Claims (5)

1, a kind of shock wave formula pressurised heat exchangers is characterized in that:

One mixes supercharging diffuser pipe (5) is welded in the tubular circular shell (4), locate vertical welding at the tubular circular shell (4) of this mixing supercharging diffuser pipe (5) import one end and be connected to airtight intake chamber (3), this airtight intake chamber (3) is communicated with mixing supercharging diffuser pipe (5) import one end, and tubular circular shell (4) import one end of airtight intake chamber (3) opposite side passes through flange, adjusting nut (8) is connected with steam inlet tube (1), this steam inlet tube (1) is by above-mentioned adjustment nut (8) fixed steam jet pipe (2), and the nozzle of this steam jet (2) is communicated with described airtight intake chamber (3) and the import of mixing supercharging diffuser pipe (5).

2, shock wave formula pressurised heat exchangers as claimed in claim 1 is characterized in that: above-mentioned steam jet (2) is the convergent Venturi tube of flaring again.

3, shock wave formula pressurised heat exchangers as claimed in claim 1 is characterized in that: above-mentioned tubulose circular housing (4) and adjustment nut (8), and between the steam inlet tube (1), seal by teflon gasket (7).

4, shock wave formula pressurised heat exchangers as claimed in claim 1, it is characterized in that: above-mentioned mixing supercharging diffuser pipe (5) is integrated.

5, shock wave formula pressurised heat exchangers as claimed in claim 1 is characterized in that: the tubular circular shell (4) in above-mentioned mixing supercharging diffuser pipe (5) outside is provided with running status and detects mouthful (6).

Images