CN211500822U

CN211500822U - Double waste heat recovery device of generator set

Info

Publication number: CN211500822U
Application number: CN201921849491.1U
Authority: CN
Inventors: 赵立增
Original assignee: Shandong Hq Power Co ltd
Current assignee: Shandong Hq Power Co ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-09-15
Anticipated expiration: 2029-10-31

Abstract

The utility model discloses a generating set's two waste heat recovery device, it includes unit cover and engine, is connected with coolant liquid circulation pipeline on the engine, and unit cover in-connection has the extrinsic cycle radiator, is connected with exhaust pipe on being connected with the air inlet pipeline engine on the engine, still be equipped with first cooler in the unit cover, the unit covers and is equipped with the water intake pipe, and unit cover top is connected with the tail gas cooling tank, water intake pipe passes first cooler and tail gas cooling tank in proper order, be connected with the coolant liquid branch road on the coolant liquid circulation pipeline, coolant liquid branch road and water intake pipe all pass first cooler in order to carry out the heat exchange, exhaust pipe connects and carries out the heat exchange with the water intake pipe in the tail gas cooling tank, is connected with the blast pipe on the tail gas cooling tank. The utility model discloses can fully absorb the heat energy of engine coolant liquid and engine exhaust gas's heat energy, have the advantage that heat energy absorption efficiency is high, the high-usage effectively guarantees engine work efficiency.

Description

Double waste heat recovery device of generator set

Technical Field

The utility model relates to a two waste heat recovery devices of generating set.

Background

In order to prevent the problems of local power limitation, unsmooth power grid line laying and the like from influencing normal production operation or life, part of enterprises adopt a self-powered mode to carry out production operation. Most of the existing generator sets comprise a set cover, an engine and a generator are installed in the set cover, the engine can be a fuel engine (diesel engine) or a dual-fuel diesel engine, and the like, and the engine can generate a large amount of heat in long-time work. In the prior art, some heat recovery devices are arranged in a generator set, and the heat recovery devices only absorb part of heat energy of cooling liquid but cannot systematically absorb heat energy of engine tail gas and heat energy of the cooling liquid, so that heat energy loss is high. In addition, most of the heat energy is discharged to the ambient air of the engine unit, and the ambient temperature of the engine is high in the long-time running process of the engine unit, so that the high-temperature gas entering the cylinder is not beneficial to the sufficient combustion of fuel oil or fuel gas, and the engine can output larger power and reduce the discharge of harmful gas to realize energy conservation and emission reduction by controlling the proper air inlet temperature.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to above-mentioned defect, a two waste heat recovery device of generating set is provided, this two waste heat recovery device of generating set can fully absorb the heat energy of engine coolant liquid and the heat energy of engine exhaust gas to the heat energy make full use of that makes the engine produce avoids during above-mentioned heat energy discharges the ambient air of engine group, guarantees the inlet air temperature of engine.

For solving the technical problem, the utility model provides a generating set's two waste heat recovery devices includes the unit cover and connects the engine in the unit cover, is connected with coolant liquid circulation pipeline on the engine, and unit cover in-connection has the extrinsic cycle radiator of concatenating at coolant liquid pipeline and being used for cooling off engine coolant liquid, is connected with the air inlet pipeline on the engine and connects the filter on the air inlet pipeline, is connected with exhaust pipe on the engine, and its structural feature is: still be equipped with first cooler in the unit cover, the unit covers and is equipped with the water intake pipe, unit cover top is connected with the tail gas cooling tank, the water intake pipe passes first cooler and tail gas cooling tank in proper order, be connected with the coolant liquid branch road on the coolant liquid circulation pipeline, coolant liquid branch road and water intake pipe all pass first cooler in order to carry out the heat exchange, the exhaust pipe is connected and is carried out the heat exchange with the water intake pipe in the tail gas cooling tank, is connected with the blast pipe on the tail gas cooling tank.

After adopting above-mentioned structure, the inlet channel of above-mentioned structure has been set up on engine unit, the inlet channel carries out abundant heat exchange through first cooler and coolant liquid, then abundant heat exchange is carried out again with tail gas through tail gas cooling tank, the heat energy of coolant liquid and engine tail gas has fully been absorbed, the abundant cooling effect of engine has both been guaranteed, avoid above-mentioned heat energy to discharge in engine unit's surrounding space again, the temperature of engine unit surrounding environment has been reduced, the inlet air temperature of having guaranteed the engine can not be too high, and the high temperature water that utilizes above-mentioned heat energy to produce can supply the place that needs hot water (for example boiler, heating installation, heating biogas generating device etc.), reach energy-concerving and environment-protective purpose.

As a further improvement, the unit cover is internally connected with a second cooler, the water inlet pipeline firstly passes through the second cooler and then passes through the first cooler, and the air inlet pipeline passes through the second cooler and carries out heat exchange with the water inlet pipeline. The air inlet of the engine can be fully cooled through the structure, and the temperature of the air inlet can not be higher than a certain value, so that the working efficiency of the engine is ensured.

And the air inlet pipeline is provided with a control valve for controlling whether the inlet air passes through the second cooler or not.

The first cooler comprises a cooler shell, the cooling liquid branch penetrates into the cooler shell, the penetrating section of the cooling liquid branch is spirally bent, and the inner cavity of the cooler shell forms one section of the water inlet pipeline. The second cooler comprises a cooler shell, the air inlet pipeline penetrates into the cooler shell, and the inner cavity of the cooler shell forms the other section of the water inlet pipeline.

As a specific structural form of the tail gas cooling box, the tail gas cooling box comprises a cylindrical cooling box body, the section of the water inlet pipeline extending into the cooling box body is bent and arranged in a vertically circuitous manner, and the tail end part of the water inlet pipeline extends out of the cooling box body.

And the water inlet end of the water inlet pipeline is connected with a water pump.

To sum up, the utility model discloses can fully absorb the heat energy of engine coolant liquid and engine exhaust gas's heat energy, have the advantage that heat energy absorption efficiency is high, the high-usage effectively guarantees engine work efficiency.

Drawings

The following detailed description of embodiments of the present invention is provided with reference to the accompanying drawings:

fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic diagram of the first cooler in the embodiment of FIG. 1;

FIG. 3 is a schematic diagram of a second cooler in the embodiment of FIG. 1;

fig. 4 is a schematic structural diagram of the tail gas cooling tank in the embodiment of fig. 1.

Detailed Description

Referring to fig. 1, the utility model provides a two waste heat recovery device of generating set, only show its frame construction in the picture, the concrete structure of generating set's unit cover is prior art, generating set not only includes the part that shows in the picture, still include the generator, other parts such as base, it includes unit cover and connects engine 1 in unit cover, the dotted line in the picture is unit cover, engine 1 can adopt the diesel engine among the prior art, only adopt the picture frame to represent in the picture, do not show its concrete structure, its concrete structure is prior art, following each device or the part of being connected with the engine, the specific position and the structure of each device and part connection engine are clearly known to the personnel in the field, be connected with coolant liquid circulation pipeline 2 on engine 1, coolant liquid circulation pipeline includes drain pipe and feed liquor pipe, unit cover in-connection has the outer circulation radiator 12 that concatenates at the coolant liquid pipeline and be used for cooling engine coolant liquid The specific structure of the external circulation radiator 12 is the prior art, and comprises a radiating wing plate, a radiating fan and the like, the structure of which is not described in detail herein, an air inlet pipeline 3 and a filter connected to the air inlet pipeline are connected to the engine 1, an exhaust pipeline 5 is connected to the engine 1, a first cooler 6 and a second cooler 7 are also arranged in the unit cover, a water inlet pipeline 8 is arranged on the unit cover, the water inlet pipeline 8 extends into the unit cover from one side wall thereof and extends out from the top thereof, a water pump 11 is connected to the water inlet end of the water inlet pipeline 8 to force the water in the water inlet pipeline to flow, so as to ensure the absorption of heat energy, a tail gas cooling tank 9 is connected to the top of the unit cover, the water inlet pipeline 8 sequentially passes through the second cooler 7, the first cooler 6 and the tail gas cooling tank 9, a coolant branch 21 is connected to the coolant circulation pipeline 2, coolant liquid branch 21 and water intake pipe 8 all pass first cooler 6 in order to carry out the heat exchange, exhaust pipe 5 is connected and is carried out the heat exchange with water intake pipe 8 in the tail gas cooling tank, is connected with the blast pipe on the tail gas cooling tank 9, air inlet pipe 3 passes second cooler 7 and carries out the heat exchange with water intake pipe. Through the structure, the water in the water inlet pipeline 8 cools the air inlet pipeline 3 firstly to ensure that the temperature of the air entering the diesel engine is proper, the water in the water inlet pipeline 8 cools the engine cooling liquid again to ensure that the engine cooling liquid reaches proper temperature, and finally the water in the water inlet pipeline cools the tail gas discharged by the engine, so that the heat energy of the cooling liquid and the tail gas is fully utilized, and the air inlet temperature of the engine is ensured. The air inlet pipeline 3 is provided with a control valve 10 used for controlling whether air enters the second cooler or not, a thermometer can be arranged on the air inlet pipeline of the engine, when the air temperature on the air inlet pipeline is detected to be too high, the control valve is screwed to enable the air inlet pipeline to receive cooling of water in the water inlet pipeline through the second cooler, and when the air temperature on the air inlet pipeline is detected to be proper, the air in the air inlet pipeline can directly enter the engine without passing through the second cooler.

Referring to fig. 2 and 3, the structure of first cooler is the same with the structure of second cooler, certainly can also adopt the cooler of other structures, adopts the utility model provides a cooler can the biggest realization heat exchange to can reduce the use amount of coolant liquid by the at utmost, first cooler 6 includes the cooler casing, the section that coolant liquid branch road 21 penetrated and penetrated in the cooler casing is the crooked setting of heliciform, and the inner chamber of cooler casing constitutes a section of inlet channel 8. The second cooler 7 comprises a cooler housing into which the inlet line 3 penetrates, the inner chamber of which forms a further section of the inlet line 8.

Referring to fig. 1 and 4, the tail gas cooling box 9 includes the cooling box 91 that is the tube-shape, the section that water inlet pipe 8 stretched into in the cooling box is circuitous form of buckling setting from top to bottom and the terminal portion of water inlet pipe stretches out outside the cooling box, exhaust pipe 5 is connected in the one end of tail gas cooling box 9, and the other end at the tail gas cooling box is connected to the blast pipe, and the above-mentioned water inlet pipe section of buckling can carry out abundant heat absorption to exhaust tail gas, reduces tail gas exhaust temperature, slows down the speed of tail gas emission, makes the tiny particle smoke and dust in the tail gas can freely fall down, is equipped with dust exhaust door 92 on the lateral wall of above-mentioned tail gas cooling box 9, opens dust exhaust door 92, can regularly handle the dust that falls in the cooling box.

The utility model discloses an above do the concrete structural style, the utility model discloses do not receive the restriction of above-mentioned embodiment, in this technical field personnel, based on the utility model discloses go up the equivalent change and the part replacement of concrete structure and all be in the utility model discloses a within range.

Claims

1. The utility model provides a generating set's two waste heat recovery device, includes the unit cover and connects engine (1) in the unit cover, is connected with coolant liquid circulation pipeline (2) on engine (1), and the unit covers in-connection has the extrinsic cycle radiator that concatenates at the coolant liquid pipeline and be used for cooling off the engine coolant liquid, is connected with air inlet pipeline (3) and connects the filter on air inlet pipeline on engine (1), is connected with exhaust pipe (5) on engine (1), characterized by: still be equipped with first cooler (6) in the unit cover, water intake pipe (8) are equipped with in the unit cover, unit cover top is connected with tail gas cooling tank (9), water intake pipe (8) pass first cooler (6) and tail gas cooling tank (9) in proper order, be connected with coolant liquid branch road (21) on coolant liquid circulating line (2), coolant liquid branch road (21) and water intake pipe (8) all pass first cooler (6) in order to carry out the heat exchange, exhaust pipe (5) are connected and are carried out the heat exchange with water intake pipe (8) in the tail gas cooling tank, are connected with the blast pipe on tail gas cooling tank (9).

2. The dual heat recovery device of a generator set of claim 1, wherein: the unit cover is internally connected with a second cooler (7), the water inlet pipeline (8) firstly passes through the second cooler (7) and then passes through the first cooler (6), and the air inlet pipeline (3) passes through the second cooler (7) to exchange heat with the water inlet pipeline.

3. The dual heat recovery device of a generator set of claim 2, wherein: and a control valve (10) used for controlling whether the inlet air passes through the second cooler is arranged on the inlet pipeline (3).

4. The double waste heat recovery device of the generator set of any one of claims 1 to 3, characterized in that: first cooler (6) are including the cooler casing, coolant liquid branch road (21) penetrate the cooler casing in and the section that penetrates be the crooked setting of heliciform, the inner chamber of cooler casing constitutes a section of inlet channel (8).

5. The double waste heat recovery device of the generator set according to claim 2 or 3, characterized in that: the second cooler (7) comprises a cooler shell, the air inlet pipeline (3) penetrates into the cooler shell, and the inner cavity of the cooler shell forms the other section of the water inlet pipeline (8).

6. The double waste heat recovery device of the generator set of any one of claims 1 to 3, characterized in that: tail gas cooling tank (9) is including being cooling box (91) of tube-shape, water inlet pipe (8) stretch into the interior section of cooling box and be circuitous form setting of buckling about being and water inlet pipe's the terminal portion stretch out outside the cooling box.

7. The double waste heat recovery device of the generator set of any one of claims 1 to 3, characterized in that: the water inlet end of the water inlet pipeline (8) is connected with a water pump (11).