A water-temperature controllable water-jacket exhaust pipe

Abstract

The present invention discloses a water-temperature controllable water-jacket exhaust pipe, comprising an outer pipe, an inner pipe, a water inlet joint, a water outlet joint, an air inlet joint, an exhaust joint, a thermostat and a controller, wherein one end of the water inlet joint and the water outlet joint respectively extend into the outer pipe and are communicated with a cooling water cavity located between the outer pipe and the inner pipe, the thermostat comprises a casing, a spiral pipe, an inlet pipe connector, an outlet pipe connector, a heating element and a temperature sensor, the inlet pipe connector and the outlet pipe connector are respectively mounted on two oppositely disposed side walls of the casing, the spiral pipe is located in the inner cavity of the casing and the two ends are respectively connected to one end of the inlet pipe connector and the outlet pipe connector, the other end of the outlet pipe connector is connected to the water inlet joint, a plurality of the heating elements and the temperature sensors are respectively mounted in the inner cavity of the casing and are electrically connected to the controller, and can effectively avoid the occurrence of the problem of increased fuel consumption caused by excessively low exhaust gas temperature when the engine is in a small or medium load state.

Description

[Technical field]

[0001] The invention relates to the technical field of a water jacket exhaust pipe, in particular to the technical field of a water jacket exhaust pipe with controllable water temperature. [Background technology]

[0002] The water jacket exhaust pipe is an important component of high-power marine engines, usually including an air cavity and a cooling water cavity. When working, each cylinder of the diesel engine sends high-temperature exhaust gas along the air cavity into the supercharger, during which the cooling water cavity surrounded by the air cavity continuously absorbs heat and reduces the temperature.

[0003] However, since the flow of cooling water flowing through the water jacket exhaust pipe is usually difficult to control, it is very easy to cause the exhaust temperature of the engine to be too low when the engine is under small and medium loads, which in turn causes the performance of the matching supercharger to be greatly weakened, the engine fuel consumption to be significantly increased, and economic losses to be caused, which needs to be solved urgently. [Summary of the invention]

[0004] The purpose of the present invention is to solve the problems in the prior art and to provide a water-temperature controllable water-jacket exhaust pipe, which can effectively avoid the problem of increased fuel consumption caused by excessively low exhaust gas temperature when the engine is in a small or medium load state.

[0005] To achieve the above-mentioned purpose, the present invention proposes a water-temperature controllable water-jacket exhaust pipe, comprising an outer tube, an inner tube, a water inlet joint, a water outlet joint, an air inlet joint, an exhaust joint, a thermostat and a controller, wherein the inner tube is coaxially arranged in the outer tube, one end of the water inlet joint and the water outlet joint respectively extends into the outer tube and is connected to the cooling water cavity between the outer tube and the inner tube, one end of the exhaust joint and several air inlet joints are respectively connected to the air cavity in the inner tube and the other end is arranged to pass out of the outer tube, the thermostat comprises a box, a spiral tube, an inlet pipe connector, an outlet pipe connector, a heating element and a temperature sensor, the inlet pipe connector and the outlet pipe connector are respectively installed on two side walls of the box that are opposite to each other, the spiral tube is located in the inner cavity of the box and the two ends are respectively connected to one end of the inlet pipe connector and the outlet pipe connector, the other end of the outlet pipe connector is connected to the water inlet joint, several heating elements and temperature sensors are respectively installed in the inner cavity of the box and are electrically connected to the controller.

[0006] Preferably, the outer tube comprises a shell, a base plate and a conduit, a plurality of the conduits are respectively arranged between the shell and the base plate, and the shell and the base plate are connected by a plurality of fasteners respectively arranged through the conduits.

[0007] Preferably, a drain port is provided on the outer wall of the shell, and the drain port is closed by a drain end.

[0008] Preferably, an air vent is provided on the outer wall of the shell, and the air vent consists of an air vent end.

[0009] Preferably, the spiral tube is elastic and can freely oscillate up and down in the inner cavity of the box.

[0010] Preferably, the spiral tube is an elastic hose throughout.

[0011] Preferably, the spiral tube comprises a main tube section and an auxiliary tube section, the main tube section is a spiral hard tube, the auxiliary tube section is an elastic hose, and the auxiliary tube sections are respectively arranged at both ends of the main tube section.

[0012] Preferably, the spiral radii of each turn of the spiral tube are different.

[0013] Preferably, the spiral radius of each turn of the spiral tube gradually increases from both ends inwards.

[0014] Preferably, both ends of the spiral tube are detachably connected to one end of the inlet pipe connector and the outlet pipe connector respectively, and an opening is provided on the box body, and the opening is closed by a sealing door.

[0015] Beneficial effects of the present invention: The present invention forms a thermostat by arranging a housing, a spiral tube, an inlet pipe connector, an outlet pipe connector, a heating element and a temperature sensor, so that the cooling water can enter the cooling water cavity between the outer tube and the inner tube and cool the exhaust gas after being heated to a certain temperature by the thermostat, thereby effectively avoiding the occurrence of the problem of increased fuel consumption caused by too low exhaust gas temperature when the engine is in a small or medium load state; by making the spiral tube an elastic hose throughout or spliced ​​by a spiral hard tube and an elastic hose, the spiral tube can be freely oscillated up and down in the housing by using the water flow that continuously adjusts the flow direction in the spiral tube, automatically stirring the water in the housing, and ensuring that the cooling water is heated evenly; by making the spiral radius of each circle of the spiral tube gradually increase from both ends to the inside, the strength of the free up and down oscillation of the spiral tube is effectively improved; by arranging a plurality of conduits between the housing and the bottom plate, the fastener can be guided to prevent it from tilting, thereby ensuring a stable connection between the housing and the bottom plate; by arranging a venting end, it is convenient to discharge the gas in the cooling water cavity.

[0016] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

Brief Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of a water-temperature controllable water jacket exhaust pipe of the present invention after removing the thermostat and the controller;

[0018] Figure 2 This is a front view of a water-temperature controllable water jacket exhaust pipe of the present invention after removing the thermostat and the controller;

[0019] Figure 3 It is a schematic diagram of the internal structure of a water-temperature controllable water jacket exhaust pipe of the present invention after removing the thermostat and the controller;

[0020] Figure 4 The present invention is a front view of a thermostat for a water-temperature controllable water-jacket exhaust pipe.

[0021] In the figure: 1-outer tube, 11-shell, 12-bottom plate, 13-conduit, 14-drain terminal, 15-vent terminal, 2-inner tube, 3-water inlet joint, 4-water outlet joint, 5-air inlet joint, 6-exhaust joint, 7-thermostat, 71-box, 72-spiral tube, 721-main pipe section, 722-accessory pipe section, 73-inlet pipe connector, 74-outlet pipe connector, 75-heating element, 76-temperature sensor. [Specific implementation method]

[0022] See also Figures 1 to 4 The present invention discloses a water-temperature controllable water-jacket exhaust pipe, comprising an outer tube 1, an inner tube 2, a water inlet joint 3, a water outlet joint 4, an air inlet joint 5, an exhaust joint 6, a thermostat 7 and a controller. The inner tube 2 is coaxially arranged in the outer tube 1, one end of the water inlet joint 3 and the water outlet joint 4 are respectively extended into the outer tube 1 and are connected to the cooling water cavity between the outer tube 1 and the inner tube 2, one end of the exhaust joint 6 and a plurality of air inlet joints 5 are respectively connected to the air cavity in the inner tube 2 and the other end is arranged to pass out of the outer tube 1, and the thermostat 7 includes a box 71, a spiral tube 72, an inlet pipe connector 73, an outlet pipe connector 74, a heating element 75 and a temperature sensor 76, wherein the inlet pipe connector 73 and the outlet pipe connector 74 are respectively mounted on two opposite side walls of the box body 71, the spiral tube 72 is located in the inner cavity of the box body 71 and its two ends are respectively connected to one end of the inlet pipe connector 73 and the outlet pipe connector 74, the other end of the outlet pipe connector 74 is connected to the water inlet joint 3, and a plurality of the heating elements 75 and the temperature sensor 76 are respectively mounted in the inner cavity of the box body 71 and are electrically connected to the controller.

[0023] The outer tube 1 includes a shell 11, a bottom plate 12 and a conduit 13. A plurality of conduits 13 are respectively arranged between the shell 11 and the bottom plate 12. The shell 11 and the bottom plate 12 are connected by a plurality of fasteners respectively passing through the conduits 13.

[0024] The outer wall of the housing 11 is provided with a water outlet, which is closed by a water outlet terminal 14 .

[0025] An air vent is disposed on the outer wall of the housing 11 , and the air vent is formed by an air vent terminal 15 .

[0026] The spiral tube 72 is elastic and can freely oscillate up and down in the inner cavity of the box body 71 .

[0027] The spiral tube 72 includes a main tube section 721 and an auxiliary tube section 722 . The main tube section 721 is a spiral hard tube, and the auxiliary tube section 722 is an elastic hose. The auxiliary tube sections 722 are respectively arranged at both ends of the main tube section 721 .

[0028] The spiral radius of each turn of the spiral tube 72 gradually increases from both ends to the inside.

[0029] The two ends of the spiral tube 72 are detachably connected to one end of the inlet pipe connector 73 and the outlet pipe connector 74 respectively. The box body 71 is provided with an opening which is closed by a sealing door.

[0030] Working process of the present invention:

[0031] First, connect the outer tube 1 to the cylinder head of the diesel engine. Next, connect the inlet pipe connector 73 to the cooling water outlet of the engine, connect the outlet pipe connector 74 to the water inlet joint 3, and then connect the water outlet joint 4 to the cooling water inlet of the engine. Then, open the sealing door, inject a certain amount of water into the inner cavity of the shell 71, and then reclose the sealing door. Connect each air inlet joint 5 to the exhaust end of each cylinder of the diesel engine, and then connect the exhaust joint 6 to the supercharger of the diesel engine. During operation, the cooling water continuously enters and exits the cooling water cavity between the outer tube 1 and the inner tube 2 along the water inlet joint 3 and the water outlet joint 4 to form a cooling water circulation. The exhaust gas enters the inner tube 2 along each air inlet joint 5, and then, after being absorbed and cooled by the cooling water, it flows into the supercharger along the exhaust joint 6 for subsequent treatment.

[0032] When the engine is in a small or medium load state, the heating element 75 heats the water in the inner cavity of the box body 71, thereby indirectly heating the cooling water flowing through the spiral tube 72, and the temperature sensor 76 measures the temperature of each point in real time. In addition, since the cooling water will constantly change its flow direction when flowing through the main pipe section 721, and the auxiliary pipe sections 722 at both ends of the main pipe section 721 are elastic, the spiral tube 72 will oscillate freely up and down, thereby stirring the water in the inner cavity of the box body 71 to ensure that the cooling water is heated evenly.

[0033] The present invention forms a thermostat by arranging a box body, a spiral tube, an inlet pipe connector, an outlet pipe connector, a heating element and a temperature sensor, so that the cooling water can enter the cooling water cavity between the outer tube and the inner tube and cool the exhaust gas after being heated to a certain temperature by the thermostat, thereby effectively avoiding the occurrence of the problem of increased fuel consumption caused by too low exhaust gas temperature when the engine is in a small or medium load state; by making the spiral tube an elastic hose throughout or spliced ​​by a spiral hard tube and an elastic hose, the spiral tube can be freely oscillated up and down in the box body by using the water flow that continuously adjusts the flow direction in the spiral tube, automatically stirring the water in the box body, and ensuring that the cooling water is heated evenly; by making the spiral radius of each circle of the spiral tube gradually increase from both ends to the inside, the strength of the free up and down oscillation of the spiral tube is effectively improved; by arranging a plurality of guide tubes between the shell body and the bottom plate, the fastener can be guided to prevent it from tilting, thereby ensuring a stable connection between the shell body and the bottom plate; by arranging a venting end, it is convenient to discharge the gas in the cooling water cavity.

[0034] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. A water-temperature controllable water-jacket exhaust pipe, characterized in that: The invention comprises an outer tube (1), an inner tube (2), a water inlet joint (3), a water outlet joint (4), an air inlet joint (5), an exhaust joint (6), a thermostat (7) and a controller, wherein the inner tube (2) is coaxially arranged in the outer tube (1), one end of the water inlet joint (3) and the water outlet joint (4) respectively extend into the outer tube (1) and are connected to a cooling water cavity between the outer tube (1) and the inner tube (2), and one end of the exhaust joint (6) and a plurality of air inlet joints (5) are separately connected to the outer tube (1). The thermostat (7) comprises a housing (71), a spiral tube (72), an inlet pipe connector (73), an outlet pipe connector (74), a heating element (75) and a temperature sensor (76). The inlet pipe connector (73) and the outlet pipe connector (74) are respectively mounted on two opposite side walls of the housing (71). The spiral tube (72) is located in the inner cavity of the housing (71) and The two ends are respectively connected to one end of the inlet pipe connector (73) and the outlet pipe connector (74); the other end of the outlet pipe connector (74) is connected to the water inlet joint (3); a plurality of heating elements (75) and temperature sensors (76) are respectively installed in the inner cavity of the box (71) and are electrically connected to the controller; the spiral tube (72) is elastic and can freely oscillate up and down in the inner cavity of the box (71); the spiral tube (72) is an elastic hose; the spiral The tube (72) comprises a main tube section (721) and an auxiliary tube section (722); the main tube section (721) is a spiral hard tube, the auxiliary tube section (722) is an elastic hose, and the auxiliary tube sections (722) are respectively arranged at both ends of the main tube section (721); the two ends of the spiral tube (72) are respectively detachably connected to one end of an inlet tube connector (73) and an outlet tube connector (74); an opening is provided on the box body (71), and the opening is closed by a sealing door.

2. A water-temperature controllable water-jacket exhaust pipe as claimed in claim 1, characterized in that: The outer tube (1) comprises a shell (11), a bottom plate (12) and a conduit (13); a plurality of conduits (13) are respectively arranged between the shell (11) and the bottom plate (12); and the shell (11) and the bottom plate (12) are connected via a plurality of fasteners respectively arranged through the conduits (13).

3. A water-temperature controllable water-jacket exhaust pipe as claimed in claim 2, characterized in that: A water discharge port is provided on the outer wall of the housing (11), and the water discharge port is closed by a water discharge end (14).

4. A water-temperature controllable water-jacket exhaust pipe as claimed in claim 2, characterized in that: An air release port is provided on the outer wall of the shell (11), and the air release port is provided with an air release terminal (15).

5. A water-temperature controllable water-jacket exhaust pipe according to any one of claims 1, characterized in that: The spiral radii of each turn of the spiral tube (72) are different in size.

6. The water-temperature controllable water-jacket exhaust pipe according to claim 1, characterized in that: The spiral radius of each turn of the spiral tube (72) gradually increases from both ends inwards.

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