CN2319759Y - Lithium Bromide absorption set of cold-producing medium free circulating pump - Google Patents

Abstract

The utility model relates to a lithium Bromide absorption set of a cold-producing medium free circulating pump, which comprises a low-pressure generator (2), a condenser (4), an evaporator (8), pipelines, and valve elements. The lithium Bromide absorption set is characterized in that the low pressure generator flows to the high-temperature refrigerant water pipeline (5), or the non-throttled refrigerant water pipeline (6) through which the condenser flows to the evaporator is connected in series with an ejector (15). An ejection pipeline (14) is connected between the base of the evaporator and the ejector. Based upon the ejection action of the refrigerant, the unevaporated refrigerant in the lithium Bromide absorption refrigeration circulation with no refrigerant pump is recovered, in order to increase overall efficiency and save energy consumption.

Description

The lithium bromide absorption-type machine unit device of no refrigerant cycle pump

The utility model relates to a kind of lithium bromide absorption-type machine unit system, relates in particular to a kind of lithium bromide absorption-type machine unit device that does not have the refrigerant cycle pump.

In lithium bromide absorption-type machine unit, use a kind of no refrigerant cycle pump, rely on the effect of potential difference and pressure reduction, make the water as refrigerant spray, produce the system of cold at the evaporimeter heating surface.But in this system, according to the difference of operating condition and heat-transfer pipe clean-up performance, drenching the water as refrigerant that swashs at the evaporimeter heating surface may not necessarily all evaporate, and unevaporated water as refrigerant will accumulate in base of evaporator.In the lithium bromide absorption-type machine unit that the refrigerant cycle pump is housed, unevaporated water as refrigerant obtains utilizing by the capable again cloth liquid of circulation of cryogenic fluid pump again.But in the lithium bromide absorption-type machine unit of no cryogenic fluid pump, water as refrigerant can only gather, and flow in the absorber after accumulating to a certain degree.Undoubtedly, the water as refrigerant that goes out can not get sufficient utilization, and the efficient that this has just reduced unit has increased energy consumption.

The lithium bromide absorption-type machine unit device of the no refrigerant cycle pump that the water as refrigerant that the purpose of this utility model is to provide a speciogenesis to go out can be fully used.

The utility model is achieved in that a kind of lithium bromide absorption-type machine unit device that does not have the refrigerant cycle pump, comprise: low pressure generator, condenser, evaporimeter and pipeline, valve member, be characterized in: flow to injector of serial connection in the high temperature water as refrigerant pipeline of condenser at low pressure generator, at base of evaporator to the indirect injection pipeline of injector, like this, the water as refrigerant that flow to the saturation pressure 600～700mmHg of condenser by low pressure generator comes the water as refrigerant of unevaporated saturation pressure 6～7mmHg in the injection evaporimeter, mixed water as refrigerant flow in the condenser again, drenches the heating surface that swashs at evaporimeter again.

The utility model also can be achieved in that a kind of lithium bromide absorption-type machine unit device that does not have the refrigerant cycle pump, comprise: condenser, evaporimeter and pipeline, valve member, be characterized in: flow to injector of serial connection in the water as refrigerant pipeline of evaporimeter before without throttling at condenser, at base of evaporator to the indirect injection pipeline of injector, like this, flow to the water as refrigerant of unevaporated saturation pressure 6～7mmHg in the water as refrigerant injection evaporimeter of the saturation pressure 50～60mmHg of evaporimeter before without throttling by condenser, the pouring that mixed water as refrigerant directly enters evaporimeter swashs in the system.

Compared with prior art, because flowing in the water as refrigerant pipeline of condenser or flow in the water as refrigerant pipeline of evaporimeter before without throttling at condenser at low pressure generator, the utility model has been connected in series an injector, utilize the ejector action of cryogen, be recovered in unevaporated water as refrigerant in the lithium bromide absorbing type refrigeration circulation of no refrigerant cycle pump, save energy consumption, improved the efficient of unit.

Fig. 1 is the lithium bromide absorption-type machine unit installation drawing of the present no cryogenic fluid pump that uses.

One of lithium bromide absorption-type machine unit new equipment figure of the no cryogenic fluid pump that Fig. 2 proposes for this patent.

One of lithium bromide absorption-type machine unit new equipment figure of the no cryogenic fluid pump that Fig. 3 proposes for this patent.

Below in conjunction with accompanying drawing the utility model being done one describes in detail:

Fig. 1 is the double-effect lithium bromide absorption type set of the present no cryogenic fluid pump that uses.Unit is by high pressure generator 1, low pressure generator 2, condenser 4, evaporimeter, and 8, absorber 10, cryogenic fluid heat exchanger 12, high-temperature solution heat exchanger 13, solution pump 11 and pipeline, valve member etc. partly form.The weak solution of absorber 10 outlet is carried by solution pump 11, by cryogenic fluid heat exchanger 12, enters high pressure generator 1 after high-temperature solution heat exchanger 13 heats up, and is heated the source heating in high pressure generator, heating source can be heating steam.Pressure gap according to saturated vapor constitutes the single, double effect lithium bromide absorption-type machine unit of steam type; Or add hot water, according to the single, double effect lithium bromide absorption cold and hot water of the temperature that adds hot water different formation hot-water type unit.Also can be to be condensed into intermediate solution (or concentrated solution) after the direct-burning type lithium bromide absorption type hot and cold water unit weak solution of direct combustion oil or gas is heated, go out the refrigerant vapour of saturated vapour pressure 600～700mmHg simultaneously, high pressure generator concentrates the intermediate solution that ends and enter low pressure generator 2 behind high-temperature solution heat exchanger 13 and control valve.The heating source of low pressure generator is the refrigerant vapour from high pressure generator saturated vapour pressure 600～700mmHg.In low pressure generator, intermediate solution is further heated, be condensed into concentrated solution, go out simultaneously the refrigerant vapour of saturated vapour pressure 50～60mmHg once more, this steam is by low pressure generator liquid barrier 3, enter in the condenser 4 that in same cylindrical shell, is provided with low pressure generator, simultaneously, after the refrigerant vapour of the saturated vapour pressure 600～700mmHg that goes out in the low pressure generator heat transfer in-tube condensation high pressure generator forms water as refrigerant (this moment, low pressure generator was equivalent to the condenser of high pressure generator), also enter in the condenser by pipeline 5, refrigerant vapour and water as refrigerant are become the water as refrigerant of saturated vapour pressure 50～60mmHg by the water quench that flows in managing in condenser.This water as refrigerant enters the tube bundle surface that evaporimeter drenches excitation device 7 and is dispersed in evaporimeter 8 by pipeline 6, behind the heat of flowing cold water, flashes to the refrigerant vapour of 6～7mmHg in the absorption tube.And make in the pipe temperature of flowing cold water be reduced to 7 ℃ to reach the purpose of producing cold by 12 ° of C.The concentrated concentrated solution that ends of low pressure generator is flowed through and is entered absorber pouring excitation device after cryogenic fluid heat exchanger 12 is lowered the temperature, and is dispersed in the tube bundle surface of absorber 10, absorbs the refrigerant vapour of the 6～7mmHg that evaporates in the evaporimeter of setting in the same cylindrical shell.Liberated heat is taken out of by the cooling water that flows in the absorber tube in the absorption.Concentrated solution becomes weak solution after absorbing refrigerant vapour again, absorbs the weak solution that ends and passes through solution pump 11, and flow to high pressure generator after concentrated solution and the intermediate solution heating in cryogenic fluid heat exchanger and high-temperature solution heat exchanger.Circulation is constantly carried out, and cold is constantly made.

This shows that because the variation of operating condition and heat-transfer pipe clean-up performance, drenching the water as refrigerant that swashs on the evaporator tube bank surface may not necessarily all evaporate, unevaporated water as refrigerant accumulates in base of evaporator.Flow in the absorber after accumulating to a certain degree.Like this, the water as refrigerant that goes out just can not get sufficient utilization, is undoubtedly a kind of waste of energy, reduces with the efficient that causes unit, and energy consumption increases.

One of new equipment of the double-effect lithium bromide absorption type unit of the no cryogenic fluid pump that Fig. 2 proposes for this patent.Be to flow to injector 15 of serial connection in the high temperature water as refrigerant pipeline 5 of condenser 4 at low pressure generator 2, to the indirect injection pipeline 14 of injector, other structure and principle are the same in evaporimeter 8 bottoms.The water as refrigerant that utilizes low pressure generator to flow to the saturation pressure 600～700mmHg of condenser is power, enter injector 15 by low pressure generator 2 to the pipeline of 15 of injectors, and the water as refrigerant by unevaporated saturated vapour pressure 6～7mmHg in the injection pipeline 14 injection evaporimeters 8, mixed water as refrigerant enters condenser by injector to the pipeline between condenser again.Water as refrigerant is fully utilized like this, has improved the thermal efficiency of unit, has reduced energy consumption.

Two of the new equipment of the double-effect lithium bromide absorption type unit of the no cryogenic fluid pump that Fig. 3 proposes for this patent.Be condenser 4 flow to evaporimeter 8 without the water as refrigerant pipeline 6 before the throttling in the serial connection injector 15, to injector 15 indirect injection pipelines 14, all the other structures and principle are the same in evaporimeter 8 bottoms.The water as refrigerant that utilizes condenser to flow to the saturation pressure 50～60mmHg of evaporimeter is power, enter injector 15 by condenser to the pipeline between injector, by the water as refrigerant of unevaporated saturated vapour pressure 6～7mmHg in the injection pipeline 14 injection evaporimeters, mixed water as refrigerant enters evaporimeter by injector to the pipeline between evaporimeter again and drenches excitation device 7.Same water as refrigerant is fully utilized, and has improved the thermal efficiency of unit, has reduced energy consumption.This system also can be used for not having the absorption unit of mono-potency lithium bromide of cryogenic fluid pump.

Claims (2)

1, a kind of lithium bromide absorption-type machine unit device that does not have the refrigerant cycle pump, comprise: low pressure generator (2), condenser (4), evaporimeter (8) and pipeline, valve member, it is characterized in that: flow to a serial connection injector (15) in the high temperature water as refrigerant pipeline (5) of condenser (4) at low pressure generator (2), in evaporimeter (8) bottom to the indirect injection pipeline (14) of injector (15).

2, a kind of lithium bromide absorption-type machine unit device that does not have the refrigerant cycle pump according to claim 1, it is characterized in that: flow to evaporimeter (8) without a serial connection injector (15) in the water as refrigerant pipeline (6) before the throttling at condenser (4), in evaporimeter (8) bottom to the indirect injection pipeline (14) of injector (15).