CN214660543U

CN214660543U - EGR cooler system with adjustable segmentation

Info

Publication number: CN214660543U
Application number: CN202121173291.6U
Authority: CN
Inventors: 洪洋
Original assignee: Taizhou Vocational College of Science and Technology
Current assignee: Taizhou Vocational College of Science and Technology
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2021-11-09
Anticipated expiration: 2031-05-28

Abstract

The utility model provides a EGR cooler system with adjustable segmentation, which comprises a housin, casing one end fixedly connected with reducing pipe, reducing pipe keeps away from the one end of casing and installs the hollow tube, reducing pipe's one end fixedly connected with connecting seat is kept away from to the hollow tube, one side that is close to reducing pipe in the casing is installed the tube cooler, and one side of keeping away from reducing pipe installs the plate cooler, plate cooler one side is equipped with the bypass line, the bypass line sets up in the casing, the one end that reducing pipe was kept away from to the casing is installed and is used for switching bypass line and plate cooler's EGR valve, the EGR valve is kept away from the one end of casing and is installed the gas outlet, compared with prior art, the utility model discloses following beneficial effect has: the temperature control function of giving vent to anger satisfies the exhaust gas recirculation demand of admitting air under the different operating modes, and the segmentable design can effectively reduce the thermal shock to plate cooler, reduces the thermal stress.

Description

EGR cooler system with adjustable segmentation

Technical Field

The utility model relates to a EGR cooler system with adjustable segmentation belongs to engine exhaust treatment technical field.

Background

The basic principle of Exhaust Gas Recirculation (EGR) technology is to introduce part of the exhaust gas into the intake pipe to increase the exhaust gas composition in the mixture, and since the exhaust gas contains three atomic molecules such as water vapor and carbon dioxide, the specific heat of the three atomic molecules is large, the highest combustion temperature in the cylinder is effectively reduced, and the emission of NOx is reduced. However, direct delivery of exhaust gas into the intake pipe increases intake temperature, resulting in reduced charging efficiency and poor fuel economy, so the exhaust gas must be cooled before being introduced into the intake system.

At present, EGR cooler system often adopts single plate cooler to cool down, controls the EGR rate and then adjusts the exhaust gas volume that gets into the engine through controlling the EGR valve, can't adjust exhaust gas temperature according to the operating mode demand, and directly strikes plate cooler from engine exhaust high temperature tail gas, and the thermal shock that leads to plate cooler to receive is great, and is impaired because of thermal stress is great easily.

Disclosure of Invention

The utility model aims at providing a EGR cooler system with adjustable segmentation to the not enough that exists to prior art to solve the problem that provides among the above-mentioned background art.

In order to achieve the above purpose, the present invention is realized by the following technical solution: the utility model provides a EGR cooler system with adjustable segmentation, includes the casing, casing one end fixedly connected with reducing pipe, reducing pipe keeps away from the one end of casing and installs the hollow tube, the one end fixedly connected with connecting seat of reducing pipe is kept away from to the hollow tube, three mounting hole has evenly been seted up towards reducing pipe's one side to the connecting seat, the tubular cooler is installed to one side that is close to reducing pipe in the casing, keeps away from one side of reducing pipe and installs plate cooler, plate cooler one side is equipped with the bypass pipe way, the bypass pipe sets up in the casing, the one end that reducing pipe was kept away from to the casing is installed and is used for switching bypass pipe and plate cooler's EGR valve, the EGR valve is kept away from the one end of casing and is installed the gas outlet.

Further, the cover is equipped with the housing that is used for hiding the connecting seat on the hollow tube, housing and hollow tube sliding connection, two cylinders are installed to the one end symmetry that the casing is close to the reducing pipe, the cylinder arranges along the length direction of casing, slidable mounting has first piston, second piston in the cylinder, keep a determining deviation between first piston and the second piston, the one side middle part position that first piston deviates from the second piston rotates and is connected with the threaded rod, the one end that first piston was kept away from to the threaded rod extends to the cylinder outside and with cylinder threaded connection, the one side middle part position that the second piston deviates from first piston is fixed with the depression bar, the one end that the second piston was kept away from to the depression bar extends to the cylinder outside and presses and holds the housing.

Furthermore, a sleeve is fixed in the middle of one surface of the housing facing the reducer pipe, and the sleeve is sleeved on the hollow pipe.

Furthermore, the outer surface of the housing is connected with an air inlet valve used for being connected to the inert gas tank through a connecting pipe, and the outer surface of the housing is connected with an exhaust valve conducting outwards through the connecting pipe.

Further, the outer surface of the cylinder is sleeved with a water storage cover, the water storage cover is concentrically arranged with the cylinder and fixedly connected with the cylinder, a vertically-arranged branch pipe is arranged at the upper position of the outer surface of the water storage cover, the outer surface of the water storage cover is connected with a one-way valve connected with a cooling water supply pipeline through a connecting pipe, and the one-way valve is communicated with the water storage cover in the direction.

Furthermore, an internal thread sleeve is fixed in the middle of one side of the cylinder, which is far away from the pressure rod, the internal thread sleeve and the cylinder are arranged concentrically, and the threaded rod is in threaded connection with the internal thread sleeve.

Further, a support is fixedly connected to the outer surface of one end, close to the shell, of the cylinder, and the support is fixedly connected with the shell and is a member made of heat insulation materials.

Furthermore, one end of the pressure rod, which is far away from the second piston, is fixedly connected with a disc, and the disc and the pressure rod are of an integrally formed structure.

The utility model has the advantages that:

1. the utility model discloses a EGR cooler system with adjustable segmentation sets up the tube cooler in the plate cooler front side, can carry out the primary cooling to engine exhaust gas, reduce the thermal shock to the plate cooler, the plate cooler that has bypass pipe, the plate cooler can fully cool off exhaust gas, guide exhaust gas not through the plate cooler and directly get into the gas outlet from bypass pipe under the regulation of EGR valve, give vent to anger temperature regulatory function, satisfy the demand that admits air of exhaust gas recirculation under the different work condition, and the design of segmentable can effectively reduce the thermal shock to the plate cooler, reduce the thermal stress.

2. The utility model discloses a EGR cooler system with adjustable segmentation, utilize the bolt to install the connecting seat in required position department after, twist the threaded rod, the first piston of threaded rod drive is removed to second piston direction in the cylinder, and then the second piston is removed and is driven depression bar extrusion housing to the direction of keeping away from first piston along the cylinder, make the housing cover laminate mutually on the connecting seat and the installation carrier of housing and connecting seat, realize hiding the bolt of fixed connection seat, prevent that the bolt of fixed connection seat from the heat radiation influence temperature rise and corrosion speed is accelerated.

3. The utility model discloses a EGR cooler system with adjustable segmentation, install the water storage cover on the cylinder, when supplying water to the cooling water supply channel, the check valve is opened under pressure differential's effect, and then the cooling water in the cooling water supply channel gets into in the water storage space that water storage cover and drum body formed, and then under the separation of moisture, moisture absorbs the heat in the surrounding environment and produces water vapor and pass through the branch pipe and discharge, realize the radiating effect of water evaporation, be favorable to reducing the temperature on drum body surface, reduce the temperature to first piston, the influence of second piston.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic diagram of a sectional adjustable EGR cooler system according to the present invention;

FIG. 2 is an enlarged view of the position A of the sectional adjustable EGR cooler system of the present invention;

FIG. 3 is a schematic view of the assembly of the tube cooler, the bypass line and the housing of the sectional adjustable EGR cooler system of the present invention;

FIG. 4 is a schematic diagram illustrating the assembly of a bypass line, a plate cooler, and an EGR valve in a segmented and adjustable EGR cooler system according to the present invention;

FIG. 5 is a schematic view of the assembly of the first piston, the second piston and the cylinder of a segmented, adjustable EGR cooler system of the present invention;

FIG. 6 is a schematic view of an EGR valve and housing assembly of a segmented adjustable EGR cooler system of the present invention;

FIG. 7 is a schematic structural view of a semicircular plate in a segmented adjustable EGR cooler system according to the present invention;

in the figure: 1-shell, 2-EGR valve, 3-air outlet, 4-temperature sensor, 5-reducer pipe, 6-cover shell, 7-connecting seat, 8-hollow pipe, 9-mounting hole, 10-disc, 11-compression bar, 12-air inlet valve, 13-one-way valve, 14-water storage cover, 15-cylinder, 16-internal thread sleeve, 17-threaded rod, 18-support, 19-branch pipe, 20-exhaust valve, 21-cylinder sleeve, 22-pipe cooler, 23-bypass pipeline, 24-plate cooler, 25-first piston, 26-second piston, 27-partition plate and 28-semicircular plate.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

Referring to fig. 1 to 7, the present invention provides a technical solution: the utility model provides a EGR cooler system with adjustable segmentation, includes

casing

1, 1 one end fixedly connected with reducing pipe 5 of casing, and reducing pipe 5 keeps away from the one end of casing 1 and installs hollow tube 8, and the one end fixedly connected with connecting seat 7 of reducing pipe 5 is kept away from to hollow tube 8, and three mounting hole 9 has evenly been seted up towards reducing pipe 5's one side to connecting seat 7, utilizes mounting hole 9 to install connecting seat 7 in required position department, accomplishes being connected of 8 one ends of hollow tube and carrier.

Tube cooler 22 is installed to one side that is close to reducer pipe 5 in the casing 1, the plate cooler 24 is installed to one side of keeping away from reducer pipe 5 in the casing 1, plate cooler 24 one side is equipped with bypass pipe 23, bypass pipe 23 sets up in casing 1, the one end that casing 1 kept away from reducer pipe 5 is installed and is used for switching bypass pipe 23 and plate cooler 24's EGR valve 2, the one end that EGR valve 2 kept away from casing 1 is installed gas outlet 3, set up tube cooler 22 in plate cooler 24 front side, can carry out primary cooling to engine exhaust gas, reduce the thermal shock to plate cooler 24, plate cooler 24 with bypass pipe 23, plate cooler 24 can fully cool off exhaust gas, guide exhaust gas not through plate cooler 24 and directly get into gas outlet 3 from bypass pipe 23 under the regulation of EGR valve 2, effectively reduce the thermal shock, reduce thermal stress.

A partition plate 27 for dividing the partition plate type cooler 24 and the bypass pipeline 23 is installed in the EGR valve 2, a rotatable semi-circular plate 28 is installed in the EGR valve 2, when the semi-circular plate 28 is in the middle position, the EGR valve 2 is in the closed state, the pipe cooler 22 and the plate cooler 24 are not operated, when the semi-circular plate 28 rotates to be positioned at one side of the bypass pipeline 23, the EGR valve 2 is communicated with the bypass pipeline 23, the pipe cooler 22 is operated, the plate cooler 24 is not operated, when the semi-circular plate 28 rotates to be positioned at one side of the plate cooler 24, the EGR valve 2 is communicated with the plate cooler 24, the pipe cooler 22 and the plate cooler 24 are both operated, a temperature sensor 4 is arranged in the gas outlet 3, the output end of the temperature sensor 4 is connected with the input end of a PID controller, the output end of the PID controller is electrically connected with the input end of the EGR valve 2, the temperature sensor 4 transmits the gas temperature at the gas outlet 3 to the PID controller, facilitating the PID controller to control the action of the EGR valve 2 according to the gas temperature.

As an embodiment of the present invention: the hollow tube 8 is sleeved with a housing 6 used for hiding the connecting seat 7, the housing 6 is connected with the hollow tube 8 in a sliding manner, two cylinders 15 are symmetrically installed at one end, close to the reducer tube 5, of the shell 1, the cylinders 15 are arranged along the length direction of the shell 1, a first piston 25 and a second piston 26 are slidably installed in the cylinders 15, a certain distance is kept between the first piston 25 and the second piston 26, a threaded rod 17 is rotatably connected to the middle position of one surface, away from the second piston 26, of the first piston 25, one end, away from the first piston 25, of the threaded rod 17 extends to the outer side of the cylinder 15 and is in threaded connection with the cylinder 15, a pressure rod 11 is fixed to the middle position of one surface, away from the first piston 25, of the second piston 26, one end, away from the second piston 26, of the pressure rod 11 extends to the outer side of the cylinder 15 and presses the housing 6, the connecting seat 7 is installed at a required position by utilizing a bolt, the threaded rod 17 is screwed, the threaded rod 17 drives the first piston 25 to move towards the direction of the second piston 26 in the cylinder 15, and then the second piston 26 moves towards the direction far away from the first piston 25 along the cylinder 15 and drives the pressure rod 11 to extrude the housing 6, so that the housing 6 covers the connecting seat 7 and the housing 6 is attached to the mounting carrier of the connecting seat 7, the bolt of the fixed connecting seat 7 is hidden, the temperature rise and the corrosion speed of the bolt of the fixed connecting seat 7 are prevented from being influenced by heat radiation, a certain distance is kept between the first piston 25 and the second piston 26, and gas is arranged between the first piston 25 and the second piston 26, in the pressing process, the gas between the first piston 25 and the second piston 26 is in a compressed state, on one hand, the buffering effect is achieved, on the other hand, under the action of the reaction force of the compressed gas, and the self-transmission of the threaded rod 17 is prevented.

As an embodiment of the present invention: a sleeve 21 is fixed in the middle of one surface of the housing 6 facing the reducer pipe 5, the sleeve 21 is sleeved on the hollow pipe 8, and the contact range of the housing 6 and the hollow pipe 8 is widened by the aid of the sleeve 21.

As an embodiment of the present invention: the surface of the housing 6 is connected with an air inlet valve 12 connected to the inert gas tank through a connecting pipe, the surface of the housing 6 is connected with an exhaust valve 20 communicated outwards through a connecting pipe, the housing 6 is attached to the mounting carrier of the connecting base 7, the air inlet valve 12 and the exhaust valve 20 are opened, and then the inert gas in the inert gas tank flows into the housing 6, so that the oxygen in the housing 6 is discharged through the exhaust valve 20, the purpose of replacing the oxygen in the housing 6 is realized, and the probability of rusting of the bolt of the fixed connecting base 7 is further reduced.

As an embodiment of the present invention: the outer surface of the cylinder body 15 is sleeved with a water storage cover 14, the water storage cover 14 and the cylinder body 15 are concentrically arranged and fixedly connected with the cylinder body 15, the upper part of the outer surface of the water storage cover 14 is provided with a branch pipe 19 which is vertically arranged, the outer surface of the water storage cover 14 is connected with a check valve 13 which is connected with a cooling water supply pipeline through a connecting pipe, the check valve 13 is communicated towards the direction of the water storage cover 14, a water storage cover 14 is installed on the cylinder 15, and when water is supplied to the cooling water supply line, the check valve 13 is opened by the pressure difference, and then the cooling water in the cooling water supply pipeline enters the water storage space formed by the water storage cover 14 and the cylinder 15, and then under the separation of moisture, moisture absorbs the heat in the surrounding environment and produces steam and discharge through branch pipe 19, realizes the radiating effect of water evaporation, is favorable to reducing the temperature on cylinder 15 surface, reduces the influence of temperature to first piston 25, second piston 26.

As an embodiment of the present invention: an internal thread sleeve 16 is fixed in the middle of one surface of the cylinder 15, which is far away from the pressure lever 11, the internal thread sleeve 16 and the cylinder 15 are concentrically arranged, a threaded rod 17 is in threaded connection with the internal thread sleeve 16, the threaded rod 17 is screwed in the internal thread sleeve 16, and threaded connection between the threaded rod 17 and the cylinder 15 is realized.

As an embodiment of the present invention: a support 18 is fixedly connected to the outer surface of one end of the cylindrical body 15 close to the housing 1, the support 18 is fixedly connected to the housing 1, the support 18 is a member made of a heat insulating material, and the support 18 serves to connect the cylindrical body 15 and the housing 1.

As an embodiment of the present invention: the end of the pressure lever 11 far away from the second piston 26 is fixedly connected with a disc 10, the disc 10 and the pressure lever 11 are of an integrally formed structure, and the design of the disc 10 increases the contact range of the pressure lever 11 and the housing 6.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A segment-adjustable EGR cooler system comprising a housing (1), characterized in that: one end of the shell (1) is fixedly connected with a reducer pipe (5), one end of the reducer pipe (5) far away from the shell (1) is provided with a hollow pipe (8), one end of the hollow pipe (8) far away from the reducer pipe (5) is fixedly connected with a connecting seat (7), three mounting holes (9) are uniformly formed in one surface of the connecting seat (7) facing the reducer pipe (5), a tubular cooler (22) is arranged at one side of the shell (1) close to the reducer pipe (5), a plate cooler (24) is arranged at one side of the shell (1) far away from the reducer pipe (5), a bypass pipeline (23) is arranged on one side of the plate cooler (24), the bypass pipeline (23) is arranged in the shell (1), an EGR valve (2) used for switching a bypass pipeline (23) and a plate cooler (24) is arranged at one end of the shell (1) far away from the reducer pipe (5), and an air outlet (3) is arranged at one end of the EGR valve (2) far away from the shell (1).

2. The sectionally adjustable EGR cooler system of claim 1, wherein: the cover is equipped with housing (6) that is used for hiding connecting seat (7) on hollow tube (8), housing (6) and hollow tube (8) sliding connection, two cylinders (15) are installed to the one end symmetry that casing (1) is close to reducing pipe (5), cylinder (15) are arranged along the length direction of casing (1), slidable mounting has first piston (25), second piston (26) in cylinder (15), keep a determining deviation between first piston (25) and second piston (26), one side middle part position rotation that first piston (25) deviates from second piston (26) is connected with threaded rod (17), the one end that first piston (25) was kept away from in threaded rod (17) extends to the cylinder (15) outside and with cylinder (15) threaded connection, one side middle part position that second piston (26) deviates from first piston (25) is fixed with depression bar (11), one end of the pressure lever (11) far away from the second piston (26) extends to the outer side of the cylinder body (15) and presses the cover shell (6).

3. The sectionally adjustable EGR cooler system of claim 2, wherein: the middle part of one surface of the housing (6) facing the reducer pipe (5) is fixed with a barrel sleeve (21), and the barrel sleeve (21) is sleeved on the hollow pipe (8).

4. The sectionally adjustable EGR cooler system of claim 2, wherein: the outer surface of the housing (6) is connected with an air inlet valve (12) used for being connected to the inert gas tank through a connecting pipe, and the outer surface of the housing (6) is connected with an exhaust valve (20) conducting outwards through the connecting pipe.

5. The sectionally adjustable EGR cooler system of claim 2, wherein: the utility model discloses a water storage device, including cylinder (15), water storage cover (14) and cylinder (15) are arranged with one heart and with cylinder (15) fixed connection, water storage cover (14) surface upper portion position installs vertical arrangement's branch pipe (19), water storage cover (14) surface is connected with check valve (13) that are connected with the cooling water supply pipeline through the connecting pipe, check valve (13) switch on to water storage cover (14) direction.

6. The sectionally adjustable EGR cooler system of claim 2, wherein: an internal thread sleeve (16) is fixed in the middle of one face of the cylinder body (15) departing from the pressure lever (11), the internal thread sleeve (16) and the cylinder body (15) are arranged concentrically, and the threaded rod (17) is in threaded connection with the internal thread sleeve (16).

7. The sectionally adjustable EGR cooler system of claim 2, wherein: the outer surface of one end, close to the shell (1), of the cylinder body (15) is fixedly connected with a support (18), the support (18) is fixedly connected with the shell (1), and the support (18) is a component made of a heat insulation material.

8. The sectionally adjustable EGR cooler system of claim 2, wherein: one end of the pressure lever (11) far away from the second piston (26) is fixedly connected with a disc (10), and the disc (10) and the pressure lever (11) are of an integrally formed structure.