CN202991198U

CN202991198U - Diesel engine tail gas heat exchanger

Info

Publication number: CN202991198U
Application number: CN201220535342XU
Authority: CN
Inventors: 吴旭东; 左小东; 戴燕; 曹润; 陆俊霞
Original assignee: QINZHOU YUANWANG HEAT TRANSFER EQUIPMENT CO Ltd
Current assignee: Qinzhou Yuanwang Heat Transfer Equipment Co., Ltd.
Priority date: 2012-10-19
Filing date: 2012-10-19
Publication date: 2013-06-12
Anticipated expiration: 2022-10-19

Abstract

The utility model discloses a diesel engine tail gas heat exchanger which comprises a catchment chamber, an expansion joint, a heat preservation shell body, a heat exchanging pipe component, a bending pipe and a support. The left end face of the heat exchanging pipe component is connected with the catchment chamber in a sealed mode through the expansion joint, the right end face of the heat exchanging pipe component is connected with the catchment chamber in a sealed mode to form heat exchanger units. The heat preservation shell body is installed on the support. Two heat exchanger units of the same specification of a tee-structure heat preservation shell body are arranged laterally abreast in an inner cavity between a tail gas inlet and a tail gas outlet. The catchment chamber connected with two ends of the heat exchanger units are exposed outside the heat preservation shell body. Two connecting pipes adjacent to the catchment chamber at the left end are respectively arranged to be a water introduction channel and a water discharge channel. Two connecting pipes adjacent to the catchment chamber at the right end are connected in series to form an integrated structure through a bending pipe. The diesel engine tail gas heat exchanger achieves heat exchange with exhaust gas through circulation cooling water, enables wasted heat energy to be used, and accords with a national energy-saving emission-reducing policy. The diesel engine tail gas heat exchanger is especially suitable for being matched with a high-power diesel engine fixed at a working position.

Description

The diesel engine vent gas heat exchanger

Technical field

The utility model relates to a kind of gas-liquid heat-exchange device, and specifically, the utility model relates to a kind of with the heat-exchange device of diesel engine vent gas as thermal source.

Background technique

During the diesel engine work done, the exhaust temperature that relief opening continue to be discharged up to 300 ℃～450 ℃, except the harmful substances such as the oxynitrides that contains befouling environment, carbon granule, also follow a large amount of heat energy dischargings in tail gas, particularly the exhaust emissions amount of high-power diesel engine is large, and its heat-energy losses is larger.In engineering, supporting diesel engine direct emission usually, even added purification plant, also can only purify carbon granule, reduce the pollution of visible, and the heat energy in tail gas do not utilized.If the tail gas to diesel emission is not done integrated treatment, both wasted heat energy, also worsen peripheral working environment.

The model utility content

The utility model does not obtain the problem utilized mainly for the exhaust heat-energy of diesel emission, propose a kind of simple in structure, heat utilization rate is high, falls dirty significantly diesel engine vent gas heat exchanger.

The utility model is achieved through the following technical solutions technical goal.

The diesel engine vent gas heat exchanger, it comprises collecting chamber, expansion joint, insulation shell, heat exchange tube assemblies, bend pipe and support.Described collecting chamber is semicircle flute profile cavity, and on outer wall, an end is provided with adapter; Described heat exchange tube assemblies is the prone position cuboid, and the left side consists of heat exchanger unit by the expansion joint collecting chamber that is tightly connected after the right side directly is tightly connected collecting chamber.Described insulation shell is that cuboid is placed on support, the tail gas import of the preposition evagination of insulation shell of three-port structure, and the tail gas outlet of rearmounted evagination, the bottom is provided with recessed sewage draining exit.Its improvements are: laterally put side by side two same specification heat exchanger units in the inner chamber between the import of insulation shell tail gas and tail gas outlet, parallel alternate 90mm～100mm between two heat exchanger units, the collecting chamber that the heat exchanger unit two ends connect is exposed at outside insulation shell, as introducing or discharge flow channel, the adapter of two Neighbor Set hydroeciums of right-hand member connects being integrally formed structure with the bend pipe series winding respectively in the adapter of two Neighbor Set hydroeciums of left end.

Introduce or discharge current and evenly pass through heat exchange unit in order to realize collecting chamber, and increase heat transfer process, the collecting chamber that same heat exchanger unit two ends connect is by taking over up and down, position arranged in dislocation, and the collecting chamber that the same end of adjacent heat exchanger unit connects is equally by taking over the position connection that misplaces up and down.

Mainly embody technique effect from following several respects during the utility model practical application:

1, gas-liquid heat exchange is simple in structure, fabricating cost is low;

2, order overcurrent heat exchange, heat exchange efficiency is high;

3, tail gas enters when doing heat exchange with heat exchange tube assemblies in insulation shell, the part carbon granule is repeatedly clashed into, is adsorbed into the carbon granule ball and sunk, and concentrates from sewage draining exit at last and discharges, and this process had both been lowered the temperature, have again certain purifying effect, directly improve diesel engine periphery working environment.

Description of drawings

Fig. 1 is the utility model structural front view.

Fig. 2 is the left view of Fig. 1.

Fig. 3 is the plan view of Fig. 1.

Embodiment

The below with reference to the accompanying drawings and in conjunction with the embodiments, the utility model is described in further detail.

Diesel engine vent gas heat exchanger shown in Figure 1, it comprises collecting chamber 1, expansion joint 2, insulation shell 3, heat exchange tube assemblies 4, bend pipe 5 and support 6.Described collecting chamber 1 is semicircle flute profile cavity, and on outer wall, an end is provided with and takes over 1.1 as the passage of introducing or discharge current.Described heat exchange tube assemblies 4 is the prone position cuboid, and the left side is by expansion joint 2 collecting chamber 1 that is tightly connected, and the rear formation heat exchanger unit of collecting chamber 1 directly is tightly connected in the right side.Described insulation shell 3 is for being provided with the Thin Rectangular plate of thermal insulation layer, and insulation shell 3 is placed on support.The tail gas import 3.1 of the insulation shell 3 preposition evaginations of three-port structure, the tail gas outlet 3.2 of rearmounted evagination, the bottom is provided with recessed sewage draining exit 3.3.Laterally put side by side two same specification heat exchanger units in the inner chamber of the utility model between insulation shell 3 tail gas imports 3.1 and tail gas outlet 3.2, parallel alternate between two heat exchanger units, the alternate 100mm of the present embodiment, the collecting chamber 1 that is positioned at heat exchanger unit two ends is exposed at insulation shell 3 outsides, adapter 1.1 up and down, the position arranged in dislocation of two Neighbor Set hydroeciums 1 of left end, take over 1.1 as the import of introducing cooling water for one, another is taken over 1.1 outlets as cooling water.Two Neighbor Set hydroeciums 1 of right-hand member are both by taking over 1.1 up and down, position arranged in dislocation, also will press according to the collector pipe 1 that same heat exchanger unit two ends connect and take over 1.1 up and down, positions arranged in dislocation, adapter 1.1 use bend pipes 5 series windings of two Neighbor Set hydroeciums 1 of right-hand member connect being integrally formed structure.The present embodiment diesel engine vent gas initial temperature is 450 ℃, exhaust flow 35000m at this temperature ³/ h, working pressure 0.0026Mpa.As refrigerant, the water-exit temperature of cooling tower is 34 ℃ through the circulating water of cooling tower cooling in employing, and entering water temp is 44 ℃, and the cooling tower flow is 200T/h, circulating water pump flow 160.7 m ³/ h.After 450 ℃ of tail gas are introduced in tail gas import 3.1, start immediately circulating water pump through the left side one take over 1.1 and introduce the cooling water of 34 ℃, cooling water is after first heat exchange tube assemblies 4 heat exchange, taking over 1.1 from the other end enters the another heat exchange tube assemblies 4 that bend pipe 5 connects and continues to do heat exchange, finally take over from the left side another and discharge the water of 44 ℃ 1.1, tail gas is cooled to 52 ℃ and discharges from tail gas outlet 3.2 after the cooling water heat exchange.In above-mentioned heat exchanging process, in tail gas, the part carbon granule is repeatedly clashed into, is adsorbed into the carbon granule ball and sunk down into sewage draining exit 3.3, and this process not only lowered the temperature, but also have certain purifying effect, directly improved diesel engine periphery working environment.The water of 44 ℃ that refluxes can be used as domestic water, is used for the worker and has a bath, washes one's hands.The device that this utilizes waste heat has very big market prospect and use value, is particularly suitable for the fixing high-power diesel engine in worktable position supporting.

Claims

1. diesel engine vent gas heat exchanger, it comprises collecting chamber (1), expansion joint (2), insulation shell (3), heat exchange tube assemblies (4), bend pipe (5) and support (6); Described collecting chamber (1) is semicircle flute profile cavity, and on outer wall, an end is provided with adapter (1.1); Described heat exchange tube assemblies (4) is the prone position cuboid, and the left side consists of heat exchanger unit by expansion joint (2) collecting chamber (1) that is tightly connected after the collecting chamber (1) that directly is tightly connected in the right side; Described insulation shell (3) is placed on support (6) for cuboid, the tail gas import (3.1) of the preposition evagination of the insulation shell of three-port structure (3), and the tail gas outlet (3.2) of rearmounted evagination, the bottom is provided with recessed sewage draining exit (3.3); It is characterized in that: laterally put side by side two same specification heat exchanger units in the inner chamber between insulation shell (3) tail gas import (3.1) and tail gas outlet (3.2), parallel alternate 90mm～100mm between two heat exchanger units, the collecting chamber (1) that the heat exchanger unit two ends connect is exposed at outside insulation shell (3), as introducing or discharge flow channel, the adapter (1.1) of two Neighbor Set hydroeciums of right-hand member (1) connects being integrally formed structure with bend pipe (5) series winding respectively in the adapter (1.1) of two Neighbor Set hydroeciums of left end (1).

2. diesel engine vent gas heat exchanger according to claim 1, it is characterized in that: the collecting chamber (1) of same heat exchanger unit two ends connection is by taking over up and down, (1.1) position arranged in dislocation, and the collecting chamber (1) that the same end of adjacent heat exchanger unit connects is same by taking over up and down, (1.1) position arranged in dislocation.