CN215491203U

CN215491203U - Engine waste heat exchange device

Info

Publication number: CN215491203U
Application number: CN202120931135.5U
Authority: CN
Inventors: 张小力
Original assignee: Shanghai Airute Air Conditioning System Co ltd
Current assignee: Shanghai Airute Air Conditioning System Co ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2022-01-11
Anticipated expiration: 2031-04-30

Abstract

The utility model provides an engine waste heat exchange device, which is used for exchanging heat dissipated to air by a gas engine arranged in a heat preservation box and heat of smoke to a refrigerant, and is characterized by comprising the following components: the first shell is a closed shell and is provided with a flue gas inlet and a flue gas outlet; the second shell is a closed shell, is connected with the first shell and is provided with a hot air inlet and a hot air outlet; the fan is arranged at the hot air inlet and used for blowing the hot air in the heat insulation box into the hot air inlet; the refrigerant heat exchange unit comprises a refrigerant inlet, a heat exchange assembly and a refrigerant outlet, wherein one part of the heat exchange assembly is arranged in the first shell, the other part of the heat exchange assembly is arranged in the second shell, and the rest part of the heat exchange assembly is arranged outside the first shell and the second shell; the wastewater treatment box is arranged below the first box body and used for treating condensed water containing nitrogen oxide dissolved in the first box body due to heat exchange of flue gas.

Description

Engine waste heat exchange device

Technical Field

The utility model relates to a heat exchange device, in particular to an engine waste heat exchange device.

Background

With the continuous progress of the gas heat pump technology, the gas heat pump has been widely applied in the refrigeration and heating field. Most of the popular gas heat pump units in the market are small multi-split air-conditioning units and cold and hot water units developed by companies such as Japan Mars, Sanyo and the like, gas engines of the gas heat pump units are usually directly exposed in the ambient environment, and in the operation process of the units, the gas engines can generate a large amount of smoke containing nitrogen oxides, and the direct emission of the smoke can cause environmental pollution. Aiming at the smoke discharged by a gas engine, the current main treatment mode is to discharge the smoke in a liquid form after the smoke is condensed, but the discharged waste water is often corrosive due to the fact that the smoke contains a large amount of nitrogen-containing oxides, so that the environment pollution is caused, and the service life of a waste water discharge pipeline is also reduced.

Therefore, the gas heat pump unit in the prior art has certain harm to the environment, and with implementation of a sustainable development strategy, continuous enhancement of energy-saving and environment-friendly consciousness and promotion of a northern winter coal supply and gas change policy, how to reduce pollution of the gas heat pump unit to the environment becomes an urgent problem to be solved.

SUMMERY OF THE UTILITY MODEL

The present invention has been made to solve the above problems, and an object of the present invention is to provide an engine waste heat exchanger.

The utility model provides an engine waste heat exchange device, which is used for exchanging heat dissipated to air by a gas engine arranged in a heat preservation box and heat of smoke to a refrigerant, and is characterized by comprising the following components: the first shell is a closed shell and is provided with a flue gas inlet, a flue gas outlet and a condensed water outlet; the second shell is a closed shell, is connected with the first shell and is provided with a hot air inlet and a hot air outlet; the fan is arranged at the hot air inlet and used for blowing the hot air in the heat insulation box into the hot air inlet; the refrigerant heat exchange unit comprises a refrigerant inlet, a heat exchange assembly and a refrigerant outlet, wherein one part of the heat exchange assembly is arranged in the first shell, the other part of the heat exchange assembly is arranged in the second shell, the rest part of the heat exchange assembly is arranged outside the first shell and the second shell, the heat exchange assembly arranged in the first shell is used for absorbing heat from smoke flowing through the first shell, the heat exchange assembly arranged in the second shell is used for absorbing heat from hot air flowing through the second shell, the heat exchange assembly arranged outside the first shell and the second shell is used for absorbing heat from hot air around the heat exchange assembly, and the heat exchange assembly comprises a refrigerant heat exchange channel and fins; and the wastewater treatment box is arranged below the first box body, is communicated with the condensed water outlet and is used for treating the condensed water which is generated by the heat exchange of the flue gas and is dissolved with the nitrogen-containing oxide in the first box body, and zeolite is contained in the wastewater treatment box.

The engine exhaust heat exchange device provided by the present invention may further have the following features: wherein, the heat exchange component is any one of a fin coil heat exchanger, a micro-channel heat exchanger and a plate-fin heat exchanger.

The engine exhaust heat exchange device provided by the present invention may further have the following features: the heat exchange assembly is made of at least one of stainless steel, copper and aluminum, and the first shell is made of stainless steel or aluminum.

The engine exhaust heat exchange device provided by the present invention may further have the following features: wherein, waste water treatment case includes: a treatment tank main body and a partition plate, the treatment tank main body having: a hollow shell, wherein zeolite is contained in the shell; the maintenance port is arranged at the top of the shell and used for adding zeolite into the shell; the water inlet is arranged at the top of the shell and communicated with the condensed water outlet; the water outlet is arranged on the upper portion of the side wall of the shell, the partition plate is arranged in the shell and fixed on the shell, the partition plate is arranged between the water inlet and the water outlet, the bottom of the partition plate is higher than the bottom of the shell and lower than the water outlet, and a channel for circulating wastewater is formed between the bottom of the partition plate and the bottom of the shell.

The engine exhaust heat exchange device provided by the present invention may further have the following features: wherein the maintenance port is provided between the partition plate and the drain port.

The engine exhaust heat exchange device provided by the present invention may further have the following features: wherein, the division board is vertically fixed at the top of the shell, and the upper part of the division board is provided with a through hole.

The engine exhaust heat exchange device provided by the present invention may further have the following features: wherein, waste water treatment case still includes drain and stop valve, and the outlet setting is in the lower part of the lateral wall of casing for evacuation waste water and zeolite, and the stop valve is used for controlling the break-make of drain.

The engine exhaust heat exchange device provided by the present invention may further include: a non-refrigerant heat exchange unit disposed within the first housing and between the heat exchange assembly and the flue gas inlet, comprising at least one of a steam generator and a flue gas-water heat exchanger.

Action and effect of the utility model

According to the engine waste heat exchange device, the first shell, the smoke pipeline and the refrigerant heat exchange unit are included, the refrigerant heat exchange unit comprises the heat exchange assembly, one part of the heat exchange assembly is arranged in the first shell, and the heat exchange assembly can absorb heat from smoke flowing through the first shell, so that the engine waste heat exchange device can utilize heat in the smoke generated by the gas engine.

Furthermore, because the engine waste heat exchange device also comprises a second shell and a fan, one part of the heat exchange assembly is arranged in the second shell, the heat insulation box can limit the heat emitted by the engine during working in the heat insulation box, the fan can blow the hot air in the heat insulation box into the second shell, and the heat exchange assembly arranged in the second shell can absorb heat from the hot air flowing through the second shell; in addition, the rest part of the heat exchange assembly is arranged outside the first shell and the second shell, and the heat exchange assembly can absorb heat from the hot air around the heat exchange assembly, so that the engine waste heat exchange device can utilize the heat radiated to the surrounding air by the gas engine efficiently. In addition, the utilization of the hot air can also effectively avoid the problem of overhigh temperature of the gas engine caused by untimely heat dissipation, and ensure the normal work of the gas engine.

Further, because, engine waste heat transfer device still includes the waste water treatment case, and the splendid attire has zeolite in the waste water treatment case, can handle the comdenstion water that has dissolved nitrogen oxide that flue gas heat transfer produced in the first casing, avoids causing environmental pollution, and it is comparatively convenient to use, needn't collect specially the posttransit by treatment by departments such as waste water treatment plant and handle.

Drawings

FIG. 1 is a schematic structural diagram I of a heat exchange device for waste heat of an engine in an embodiment of the utility model;

FIG. 2 is a schematic structural diagram II of a heat exchange device for waste heat of an engine in the embodiment of the utility model;

FIG. 3 is a schematic structural diagram III of a heat exchange device for waste heat of an engine in an embodiment of the utility model;

FIG. 4 is a schematic view showing the structure of a wastewater treatment tank in the embodiment of the utility model;

FIG. 5 is a schematic view showing the structure of a wastewater treatment tank according to an embodiment of the present invention.

Detailed Description

In order to make the technical means, creation features, achievement purposes and effects of the utility model easy to understand, the following embodiments specifically describe the engine waste heat exchange device of the utility model with reference to the accompanying drawings.

FIG. 1 is a schematic structural diagram I of a heat exchange device for waste heat of an engine in an embodiment of the utility model; FIG. 2 is a schematic structural diagram II of a heat exchange device for waste heat of an engine in the embodiment of the utility model; fig. 3 is a schematic structural diagram three of the engine waste heat exchange device in the embodiment of the utility model.

As shown in fig. 1 to 3, the engine waste heat exchanging device 100 is arranged in the heat preservation tank, and includes a first housing 10, a second housing 20, a fan 30, a refrigerant heat exchanging unit 40, and a wastewater treatment tank 50.

The first housing 10 is a closed cuboid housing with a flue gas inlet 11, a flue gas outlet 12 and a condensate outlet (not shown in the figure).

A flue gas inlet 11 is provided at the top of the first casing 10 for connection and communication with an outlet for flue gas of the gas engine 22. The flue gas outlet 12 is provided on a side wall of the first housing 10. A condensed water outlet is provided at the bottom of the first casing 10. And the condensed water outlet is lower than the flue gas outlet 12.

The second housing 20 is a closed rectangular parallelepiped housing having the same width as the first housing 10, and is connected to the first housing. The first casing 10 and the second casing 20 are not communicated, so that the smoke in the first casing 10 cannot enter the second casing 20. The second casing 20 has a hot air inlet 21 and a hot air outlet (not shown in the drawings). A hot air inlet 21 is provided at the top of the second casing 20. The hot air outlet is provided at the bottom of the second casing 20.

The blower 30 is provided at the hot air inlet 21 for blowing the hot air in the incubator 100 into the hot air inlet 21.

The refrigerant heat exchange unit 40 is provided on the first and

second cases

10 and 20, and has a refrigerant inlet 41, a heat exchange unit 42, a refrigerant outlet 43, a liquid separator 44, a bus bar 45, and a connection pipe 46.

The heat exchange unit 42 includes fins 421 and refrigerant heat exchange channels 422. The heat exchange unit 42 is any one of a fin coil heat exchanger, a micro-channel heat exchanger and a plate-fin heat exchanger, in this embodiment, the heat exchange unit 42 is a fin coil heat exchanger, and the fins 421 are arranged on the refrigerant heat exchange channel 422 in a penetrating manner. The heat exchange unit 42 includes three sections (three zones), a first zone 42a, a second zone 42b, and a third zone 42 c. That is, the fins 421 and the refrigerant heat exchange channels 422 are also arranged in accordance with these three regions. The first stage area 42a is provided outside the first casing 10, the second stage area 42b is provided inside the first casing 10, and the third stage area 42c is provided inside the second casing 20.

Refrigerant heat exchange passage 422 has a coil inlet 4221 and a coil outlet 4222. Coil inlet 4221 is the location where refrigerant enters refrigerant heat exchange channel 422 and is disposed outside first housing 10. The coil outlet 4222, which is the location where refrigerant exits the refrigerant heat exchange passage 422, is disposed outside the second housing 20. Coil inlet 4221 is located lower than coil outlet 4222.

The liquid separator 44 is a vertically arranged inverted cone structure having an upper plane 441, a lower plane 442, a first inlet 443, and a plurality of liquid separation outlets 444. The number of the liquid separation outlets 444 is equal to the number of the refrigerant heat exchange channels 422. The first inlet 443 is provided on the lower plane 442, communicating with the refrigerant inlet 41. The dispensing outlets 444 are arranged on the upper plane 441 and a plurality of dispensing outlets are evenly distributed along the circumferential direction of the upper plane 441. The liquid separation outlet 444 is in communication with the coil inlet 4221 via a connecting tube 46. The material of the connection pipe 46 is the same as that of the refrigerant heat exchange passage 422. The number of the connection pipes 46 is the same as the number of the refrigerant heat exchange passages 422.

As shown in fig. 2 and 3, each branch of the bus bar 45 is connected to each coil outlet 4222, and the main path of the bus bar 45 is connected to the refrigerant outlet 43. In the present embodiment, the bus bar 45 is provided inside the second housing 20. The refrigerant outlet 43 is formed through the second housing 20.

The first stage area 42a is used for directly heat-exchanging with the hot air inside the incubator 100. The second section 42b is used for heat exchange of the flue gas. The third stage area 42c is for heat exchange with the hot air in the second casing 20.

The circulation process of the refrigerant is as follows: refrigerant enters the liquid separator 44 from the refrigerant inlet 41 through the first inlet 443 for liquid separation, then flows out from the liquid separation outlet 444, enters the refrigerant heat exchange channel 422 through the connecting pipe 46 and the coil inlet 4221, and flows to the bus bar 45 from the coil outlet 4222 after exchanging heat in the refrigerant heat exchange channel 422, and finally flows out from the refrigerant outlet 43.

The circulation process of the flue gas in the first shell 10 is as follows: the flue gas enters the first casing 10 from the flue gas duct 40, flows through the refrigerant heat exchange channels 422 and the fins 80, transfers heat to the refrigerant, and then flows out from the flue gas outlet. During the process, condensed water is generated, the nitrogen oxide in the flue gas is partially dissolved in the condensed water, and the condensed water flows out through a condensed water outlet.

The circulation process of the hot air in the second casing 20 is: the hot air enters the second housing 20 from the hot air inlet 21, flows through the refrigerant heat exchange channels 422 and the fins 80, transfers heat to the refrigerant, and then flows out from the hot air outlet.

FIG. 4 is a schematic view showing the structure of a wastewater treatment tank in the embodiment of the utility model; FIG. 5 is a schematic view showing the structure of a wastewater treatment tank according to an embodiment of the present invention.

As shown in fig. 4 and 5, the wastewater treatment tank 50 includes a treatment tank main body 51, a partition plate 52, a drain outlet 53, and a shut-off valve 54.

The treatment tank main body 51 is disposed below the first and

second housings

10 and 20, and includes a housing 511, a maintenance port 512, a closing cover 513, a water inlet 514, and a water outlet 515.

The case 511 is a hollow rectangular parallelepiped case, and zeolite is contained in the case 511.

The maintenance port 512 is rectangular and is provided on the upper surface of the housing 511 to allow an operator to feed zeolite into the housing 511. The sealing cover 513 is rectangular, has a size suitable for the maintenance opening 512, and can be inserted into the maintenance opening 512 to seal the maintenance opening 512.

The water inlet 514 is a circular through hole formed in the upper surface of the housing 511, and is connected to a condensed water outlet of the first tank 30 through a waste water pipe (not shown), and condensed water (waste water) discharged from the waste water pipe enters the housing 511 through the water inlet 514 to perform a neutralization reaction with the zeolite. The water outlet 515 is provided at an upper portion of a sidewall of the case 511, and is a pipe communicated with the case 511 for discharging waste water.

The partition plate 52 is a rectangular plate, and is vertically fixed in the housing 511 between the water inlet 514 and the water outlet 515, and also between the water inlet 514 and the maintenance port 512. The bottom of the partition plate 52 is higher than the bottom of the housing 511 and lower than the water outlet 515, and the bottom of the partition plate 52 and the bottom of the housing 511 form a passage for the circulation of wastewater. The setting of this passageway can increase the contact time of waste water and zeolite to make waste water and zeolite reaction more abundant.

A square through hole (not shown) is formed in the upper portion of the partition plate 52, the cross-sectional area of the square through hole is larger than that of zeolite, and when an operator supplies zeolite into the housing 511 from the maintenance port, if zeolite cannot be sent to the side of the partition plate 52 far from the maintenance port 512, the operator can supply zeolite to the side of the partition plate 52 far from the maintenance port 512 through the square through hole.

The drain 53 is provided at a lower portion of a sidewall of the case 511, and is a pipe communicating with the case 511 for draining the case 511 of water and zeolite. The cutoff valve 54 is installed on the drain port 53 and can control the opening and closing of the drain pipe 531.

In use, the height of the zeolite is below the water outlet 515.

The working process of the wastewater treatment tank 50 is as follows: the wastewater enters the shell 511 from the water inlet 514, reacts with the zeolite in the shell 511, flows from one side of the partition plate 52 to the other side through the passage formed by the bottom of the partition plate 52 and the bottom of the shell 511, and finally flows out from the water outlet 515.

Effects and effects of the embodiments

Further, because, first casing still includes the comdenstion water export, and engine waste heat transfer device still includes the waste water treatment case, and the splendid attire has zeolite in the waste water treatment case, can handle the comdenstion water that has dissolved nitrogen oxide that flue gas heat transfer produced in the first casing, avoids causing environmental pollution, and it is comparatively convenient to use, needn't collect specially the back handing-over by waste water treatment plant etc. department and handle.

Further, waste water treatment case is including handling case main part and division board, it has the casing to handle the case main part, water inlet and delivery port, the splendid attire has zeolite in the casing, the water inlet sets up at the casing top, the delivery port sets up the upper portion at the casing lateral wall, the division board sets up in the casing and fix on the casing and set up between water inlet and delivery port, the bottom of division board is higher than the bottom of casing and is less than the delivery port, the bottom of division board forms the passageway that supplies the waste water circulation with the bottom of casing, consequently, the comdenstion water (waste water) that flows into the casing from first casing must just can flow from the delivery port through the passageway, increased the time with zeolite contact reaction, realize better reaction effect.

In addition, the upper part of the partition plate is provided with a square through hole, so that an operator can supplement zeolite to the side, far away from the maintenance port, of the partition plate through the square through hole, and the condition that the zeolite is not uniformly distributed is avoided.

In addition, the waste water and the residual zeolite in the treatment box main body can be discharged through a sewage discharge outlet, and the maintenance and the transportation of the waste water treatment box by an operator are facilitated.

The above embodiments are preferred examples of the present invention, and are not intended to limit the scope of the present invention.

For example, in this embodiment, the engine waste heat exchanging device only includes the refrigerant heat exchanging unit, and in practical application, in order to improve the utilization effect of the flue gas, the engine waste heat exchanging device includes, in addition to the refrigerant heat exchanging unit, a non-refrigerant heat exchanging unit, which is disposed in the first housing and between the heat exchanging assembly and the flue gas inlet, and is a steam generator or a flue gas-water heat exchanger or a combination of the two.

Claims

1. The utility model provides an engine waste heat transfer device for give the refrigerant with the heat exchange of the heat and the flue gas that set up the gas engine in the heat preservation box gived off in the air, its characterized in that includes:

the first shell is a closed shell and is provided with a flue gas inlet, a flue gas outlet and a condensed water outlet;

the second shell is a closed shell, is connected with the first shell and is provided with a hot air inlet and a hot air outlet;

the fan is arranged at the hot air inlet and used for blowing the hot air in the heat insulation box into the hot air inlet;

a refrigerant heat exchange unit including a refrigerant inlet, a heat exchange assembly and a refrigerant outlet, wherein a part of the heat exchange assembly is disposed in the first housing, another part of the heat exchange assembly is disposed in the second housing, and the rest of the heat exchange assembly is disposed outside the first housing and the second housing, the heat exchange assembly disposed in the first housing is used for absorbing heat from the flue gas flowing through the first housing, the heat exchange assembly disposed in the second housing is used for absorbing heat from the hot air flowing through the second housing, the heat exchange assembly disposed outside the first housing and the second housing is used for absorbing heat from the hot air around the heat exchange assembly, and the heat exchange assembly includes a refrigerant heat exchange channel and fins; and

the wastewater treatment tank is arranged below the first shell, communicated with the condensed water outlet and used for treating the condensed water containing nitrogen oxides dissolved in the first shell due to heat exchange of flue gas, and zeolite is contained in the wastewater treatment tank.

2. The engine waste heat exchange device of claim 1, characterized in that:

wherein, the heat exchange component is any one of a fin coil heat exchanger, a micro-channel heat exchanger and a plate-fin heat exchanger.

3. The engine waste heat exchange device of claim 1, characterized in that:

the heat exchange assembly is made of any one of stainless steel, copper and aluminum, and the first shell is made of stainless steel or aluminum.

4. The engine waste heat exchange device of claim 1, characterized in that:

wherein, waste water treatment case includes: a main body of the treatment box and a partition plate,

the treatment box main body is provided with:

a hollow shell, wherein the zeolite is contained in the shell;

the maintenance port is arranged at the top of the shell and used for adding the zeolite into the shell;

the water inlet is arranged at the top of the shell and communicated with the condensed water outlet;

a water outlet arranged at the upper part of the side wall of the shell,

the separation plate is arranged in the shell and fixed on the shell, the separation plate is arranged between the water inlet and the water outlet, the bottom of the separation plate is higher than the bottom of the shell and lower than the water outlet, and a channel for the circulation of the wastewater is formed between the bottom of the separation plate and the bottom of the shell.

5. The engine waste heat exchange device of claim 4, characterized in that:

wherein the maintenance port is disposed between the partition plate and the water outlet.

6. The engine waste heat exchange device of claim 4, characterized in that:

wherein the partition plate is vertically fixed on the top of the shell,

the upper part of the partition plate is provided with a through hole.

7. The engine waste heat exchange device of claim 4, characterized in that:

wherein the wastewater treatment tank also comprises a sewage draining outlet and a stop valve,

the sewage draining outlet is arranged at the lower part of the side wall of the shell and is used for draining the wastewater and the zeolite,

the stop valve is used for controlling the on-off of the sewage draining outlet.

8. The engine waste heat exchange device of claim 1, further comprising:

a non-refrigerant heat exchange unit disposed within the first housing and between the heat exchange assembly and the flue gas inlet, comprising at least one of a steam generator and a flue gas-water heat exchanger.