阅读说明：本技术 一种冗余起动柴油机及冗余起动柴油机的控制方法 (Redundant starting diesel engine and control method thereof ) 是由 黄皓 牛军军 程俊锋 于 2021-09-07 设计创作，主要内容包括：本发明涉及柴油机技术领域,尤其涉及一种冗余起动柴油机及冗余起动柴油机的控制方法,包括马达起动组件、空气起动组件和加速起动组件,其中马达起动组件,包括起动马达和设置在起动马达输出端的传动齿轮,传动齿轮与传动飞轮传动连接；空气起动组件包括空气分配器和第一导气管路,第一导气管路设置有多个,多个第一导气管路一端均连接于空气分配器,另一端分别连接至多个柴油机本体的气缸,储气装置为空气分配器供气,空气分配器按柴油机本体内多个活塞的起动顺序依次向多个气缸输气以起动多个活塞；本发明提供的冗余起动柴油机,通过马达起动组件、空气起动组件和加速起动组件的设置,既能满足快速起动要求,同时保障了起动可靠。(The invention relates to the technical field of diesel engines, in particular to a redundant starting diesel engine and a control method of the redundant starting diesel engine, wherein the redundant starting diesel engine comprises a motor starting component, an air starting component and an acceleration starting component, wherein the motor starting component comprises a starting motor and a transmission gear arranged at the output end of the starting motor, and the transmission gear is in transmission connection with a transmission flywheel; the air starting assembly comprises an air distributor and a plurality of first air guide pipelines, one end of each of the plurality of first air guide pipelines is connected to the air distributor, the other end of each of the plurality of first air guide pipelines is connected to the cylinders of the plurality of diesel engine bodies respectively, the air storage device supplies air to the air distributor, and the air distributor sequentially supplies air to the plurality of cylinders according to the starting sequence of the plurality of pistons in the diesel engine bodies so as to start the plurality of pistons; the redundant starting diesel engine provided by the invention can meet the requirement of quick starting and simultaneously ensure the starting reliability by arranging the motor starting component, the air starting component and the acceleration starting component.)

1. The utility model provides a redundant diesel engine that starts, includes diesel engine body (1), and diesel engine body (1) has the bent axle, be provided with transmission flywheel (11) on the bent axle, transmission flywheel (11) can drive the piston in the crank rotation drive cylinder, its characterized in that still includes:

the motor starting assembly (2) comprises a starting motor (21) and a transmission gear (22) arranged at the output end of the starting motor (21), and the transmission gear (22) is in transmission connection with the transmission flywheel (11);

the air starting assembly (3) comprises a plurality of air distributors (31) and a plurality of first air guide pipelines (32), wherein one end of each of the plurality of first air guide pipelines (32) is connected to the air distributor (31), the other end of each of the plurality of first air guide pipelines (32) is connected to the cylinders of the plurality of diesel engine bodies (1), the air distributors (31) sequentially supply air to the plurality of cylinders according to the starting sequence of the plurality of pistons in the diesel engine bodies (1) to start the plurality of pistons, and air storage devices supply air to the air distributors (31);

the starting acceleration component (4) comprises a first electromagnetic valve (41) and a second air guide pipeline (42), one end of the second air guide pipeline (42) is communicated to the air storage device, the other end of the second air guide pipeline is used for being communicated with an air inlet cavity of the diesel engine body (1), and the first electromagnetic valve (41) is arranged on the second air guide pipeline (42) and can open or close the second air guide pipeline (42).

2. A redundant starting diesel engine according to claim 1, characterized in that said motor starting assembly (2) further comprises a second solenoid valve (23), said starting motor (21) being a pneumatic motor supplied with air from said air storage means, said second solenoid valve (23) being arranged on the air path connecting said pneumatic motor and said air storage means.

3. A redundant starting diesel engine according to claim 1, characterized in that said air starting assembly (3) further comprises a main starting valve (33), said main starting valve (33) being arranged in the air path between said air distributor (31) and said air storage means.

4. A redundant starting diesel engine according to claim 3, characterized in that the air starting assembly (3) further comprises a third solenoid valve (34), said third solenoid valve (34) being adapted to switch the main starting valve (33) on or off.

5. A redundant starting diesel engine according to claim 1, characterized in that a throttle plate (43) is also provided on the second air conduction line (42).

6. A redundant starting diesel engine according to claim 1, characterized by further comprising a speed sensor (5), said speed sensor (5) being adapted to detect the rotational speed of said transmission flywheel (11).

7. A control method of a redundantly cranked diesel engine using the redundantly cranked diesel engine according to any one of claims 1 to 6, characterized by comprising the steps of:

the starting motor (21) rotates, the transmission gear (22) drives the transmission flywheel (11) to rotate, and the transmission flywheel (11) drives the crankshaft to rotate so as to start the diesel engine body (1);

after the starting motor (21) rotates for a set time, the air distributor (31) sequentially supplies air to the plurality of cylinders according to the starting sequence of the pistons so as to push the pistons, and the diesel engine body (1) is started.

8. The method for controlling a redundant starting diesel engine according to claim 7, characterized in that after the air distributor (31) is operated, the rotation speed of the transmission flywheel (11) is detected, and if the rotation speed reaches a first set speed, the starting motor (21) and the air distributor (31) are closed, the first electromagnetic valve (41) is opened, the second air guide pipeline (42) supplies air to the air inlet cavity of the diesel engine body (1), and supplies air to the plurality of cylinders in sequence according to the starting sequence of the pistons to accelerate the starting of the diesel engine body (1), until the rotation speed of the transmission flywheel (11) reaches a second set speed, and the first electromagnetic valve (41) is closed.

9. The method of controlling a redundant startup diesel engine according to claim 8, characterized in that the second set speed is greater than the first set speed.

Technical Field

The invention relates to the technical field of diesel engines, in particular to a redundancy starting diesel engine and a control method of the redundancy starting diesel engine.

Background

The starting mode of the diesel engine in the prior art generally comprises electric starting, pneumatic starting or manual starting, and the starting modes are single starting, the diesel engine cannot be started if a starting system fails, but the diesel engine for specific applications such as nuclear power has special starting requirements, namely, the requirement for quick starting is met, and the starting reliability is guaranteed.

Disclosure of Invention

The invention aims to provide a redundancy starting diesel engine and a control method thereof, wherein a double-starting assembly ensures the starting reliability of the diesel engine and can accelerate the starting process.

In order to achieve the purpose, the invention adopts the following technical scheme:

on one hand, the invention provides a redundant starting diesel engine, which comprises a diesel engine body, wherein the diesel engine body is provided with a crankshaft, a transmission flywheel is arranged on the crankshaft, and the transmission flywheel can drive the crankshaft to rotate to drive a piston in a cylinder, and the redundant starting diesel engine also comprises:

the motor starting assembly comprises a starting motor and a transmission gear arranged at the output end of the starting motor, and the transmission gear is in transmission connection with the transmission flywheel;

the air starting assembly comprises an air distributor and a plurality of first air guide pipelines, one end of each of the plurality of first air guide pipelines is connected to the air distributor, the other end of each of the plurality of first air guide pipelines is connected to the cylinders of the plurality of diesel engine bodies, the air distributor sequentially conveys air to the plurality of cylinders according to the starting sequence of the plurality of pistons in the diesel engine bodies to start the plurality of pistons, and the air storage device supplies air to the air distributor;

the accelerating starting assembly comprises a first electromagnetic valve and a second air guide pipeline, one end of the second air guide pipeline is communicated to the air storage device, the other end of the second air guide pipeline is used for being communicated with an air inlet cavity of the diesel engine body, and the first electromagnetic valve is arranged on the second air guide pipeline and can be used for opening or closing the second air guide pipeline.

Preferably, the motor starting assembly further comprises a second electromagnetic valve, the starting motor is a pneumatic motor, the pneumatic motor is supplied with air by the air storage device, and the second electromagnetic valve is arranged on an air path connected with the pneumatic motor and the air storage device.

Preferably, the air starting assembly further comprises a main starting valve disposed in an air path between the air distributor and the air storage device.

Preferably, the air starting assembly further comprises a third solenoid valve for switching the main starting valve on or off.

Preferably, a throttle plate is further arranged on the second gas guide pipeline.

Preferably, the device further comprises a speed sensor, and the speed sensor is used for detecting the rotating speed of the transmission flywheel.

In another aspect, the present invention further provides a control method for a redundancy starting diesel engine, which uses the redundancy starting diesel engine, including the following steps:

the starting motor rotates, the transmission gear drives the transmission flywheel to rotate, and the transmission flywheel drives the crankshaft to rotate so as to start the diesel engine body;

after the starting motor rotates for a set time, the air distributor sequentially supplies air to the plurality of cylinders according to the starting sequence of the pistons so as to push the pistons, and the diesel engine body is started.

Preferably, after the air distributor runs, the rotating speed of the transmission flywheel is detected, if the rotating speed reaches a first set speed, the starting motor and the air distributor are closed, the first electromagnetic valve is opened, the second air guide pipe supplies air to the air inlet cavity of the diesel engine body, air is sequentially supplied to the plurality of air cylinders according to the starting sequence of the pistons so as to accelerate the starting of the diesel engine body, and the first electromagnetic valve is closed until the rotating speed of the transmission flywheel reaches a second set speed.

Preferably, the second set speed is greater than the first set speed.

The invention has the beneficial effects that: the redundant starting diesel engine provided by the invention has the advantages that the redundant starting diesel engine body is started through the motor starting assembly and the air starting assembly, the two starting assemblies can act simultaneously, after any one group of starting assemblies is damaged, the other group of starting assemblies can independently finish the starting of the diesel engine body, the starting reliability of the diesel engine body is ensured, the accelerating starting assembly is arranged in an auxiliary mode, the air supply is assisted after the motor starting assembly and the air starting assembly start the diesel engine body, and the rotating speed of the diesel engine body is helped to reach the operating rotating speed of the diesel engine body when the diesel engine body works as soon as possible.

Drawings

Fig. 1 is a schematic diagram of a redundant start diesel engine according to the present invention.

In the figure:

1. a diesel engine body; 11. a transmission flywheel;

2. a motor start assembly; 21. a starter motor; 22. a transmission gear; 23. a second solenoid valve;

3. an air starting assembly; 31. an air distributor; 32. a first air guide pipeline; 33. a main starting valve; 34. a third electromagnetic valve;

4. an accelerated start component; 41. a first solenoid valve; 42. a second air guide pipeline; 43. a throttle plate;

5. a speed sensor;

6. and (5) a vehicle control system.

Detailed Description

The technical scheme of the invention is further explained by combining the attached drawings and the embodiment. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1, the embodiment provides a redundant starting diesel engine, which includes a diesel engine body 1, where the diesel engine body 1 has a crankshaft, a transmission flywheel 11 is disposed on the crankshaft, the transmission flywheel 11 can drive the crankshaft to rotate so as to drive a piston in a cylinder, the redundant starting diesel engine further includes a motor starting assembly 2, an air starting assembly 3, and an acceleration starting assembly 4, where the motor starting assembly 2 includes a starting motor 21 and a transmission gear 22 disposed at an output end of the starting motor 21, and the transmission gear 22 is in transmission connection with the transmission flywheel 11; the air starting assembly 3 comprises a plurality of air distributors 31 and first air guide pipelines 32, wherein the first air guide pipelines 32 are provided, one ends of the first air guide pipelines 32 are connected to the air distributors 31, the other ends of the first air guide pipelines are respectively connected to the cylinders of the diesel engine bodies 1, the air storage device supplies air to the air distributors 31, and the air distributors 31 sequentially supply air to the cylinders to start the pistons according to the starting sequence of the pistons in the diesel engine bodies 1; the acceleration starting assembly 4 comprises a first electromagnetic valve 41 and a second air guide pipeline 42, one end of the second air guide pipeline 42 is communicated to the air storage device, the other end of the second air guide pipeline 42 is used for being communicated with an air inlet cavity of the diesel engine body 1, and the first electromagnetic valve 41 is arranged on the second air guide pipeline 42 and can open or close the second air guide pipeline 42.

The redundant starting diesel engine provided by the embodiment has the advantages that the motor starting component 2 and the air starting component 3 are used for redundantly starting the diesel engine body 1, the two starting components can act simultaneously, after any one group of starting components is damaged, the other group of starting components can also independently finish the starting of the diesel engine body 1, the starting reliability of the diesel engine body 1 is guaranteed, the accelerating starting component 4 is arranged in an auxiliary mode, the motor starting component 2 and the air starting component 3 are used for assisting air supply after starting the diesel engine body 1 to help the rotating speed of the diesel engine body 1 to reach the operating rotating speed of the diesel engine body 1 in working as soon as possible, furthermore, according to the diesel engine bodies 1 with different specifications and models, the number of the motors of the motor starting component 2 can adopt a single starting motor, a double starting motor or a triple starting motor as required, the air distributor 31 can adopt a single-row first air guide pipeline or double-row first air guide pipelines to start to match the diesel engine bodies 1 with different powers, compared with the diesel engine in the prior art, the redundant starting diesel engine provided by the embodiment not only meets the requirement of quick starting, but also ensures the starting reliability.

In particular, the accelerated starting assembly 4 further comprises a second solenoid valve 23, the starting motor 21 being a pneumatic motor having a higher power density than the electric motor, so that a smaller pneumatic motor can provide the same power as its electric device; an overload that exceeds the stall torque will not normally cause damage to the air motor; the speed of the air motor can be regulated by a simple solenoid valve rather than an expensive and complicated electronic speed control device. In this embodiment, the air is supplied to the pneumatic motor by the air storage device, and the second electromagnetic valve 23 is disposed in the air path connecting the pneumatic motor and the air storage device, so that the on or off of the second electromagnetic valve 23 can be conveniently controlled automatically or manually by the vehicle control system 6 to start or close the pneumatic motor, and in other embodiments, an electric motor or a hydraulic motor can be used without any limitation.

Specifically, the air starting assembly 3 further includes a main starting valve 33, the main starting valve 33 is disposed in the air path between the air distributor 31 and the air storage device, and further, the main starting valve 33 is an electromagnetic valve, which facilitates the control of the vehicle control system 6. Further, the air starting assembly 3 further includes a third solenoid valve 34, the third solenoid valve 34 is used to turn on or off the main starting valve 33, and the secondary starting prevents the system internal short circuit air distributor 31 from being started by mistake.

The second air guide pipe 42 is further provided with a throttle plate 43 for reducing pressure to prevent excessive air supply pressure.

Specifically, the device further comprises a speed sensor 5, wherein the speed sensor 5 is used for detecting the rotating speed of the transmission flywheel 11 and feeding back the rotating speed to the vehicle control system 6, and the vehicle control system 6 controls the opening and closing of the motor starting assembly 2, the air starting assembly 3 and the acceleration starting assembly 4 according to the fed back speed signal of the transmission flywheel 11.

The embodiment also provides a control method of a redundancy starting diesel engine, which uses the redundancy starting diesel engine and comprises the following steps:

the starting motor 21 rotates, the transmission gear 22 drives the transmission flywheel 11 to rotate, and the transmission flywheel drives the crankshaft to rotate to start the diesel engine body 1; after the starting motor 21 rotates for a set time to ensure that the transmission gear 22 drives the transmission flywheel 11 to be tightly meshed, the air distributor 31 sequentially supplies air to the plurality of cylinders according to the starting sequence of the pistons to push the pistons to move to start the diesel engine body 1, so that two starting assemblies can act simultaneously, after any one group of starting assemblies is damaged, the other group of starting assemblies can independently complete the starting of the diesel engine body 1, and the starting reliability of the diesel engine body 1 is ensured.

Further, the rotation speed of the transmission flywheel 11 is detected, if the rotation speed reaches a first set speed, the starting motor 21 and the air distributor 31 are closed, the first electromagnetic valve 41 is opened, the second air guide pipeline 42 supplies air to the air inlet cavity of the diesel engine body 1, air is sequentially supplied to the plurality of air cylinders according to the starting sequence of the pistons to accelerate the starting of the diesel engine body 1, until the rotation speed of the transmission flywheel 11 reaches a second set speed, the first electromagnetic valve 41 is closed, further, the air cylinders in the diesel engine body 1 are ignited when the first set speed is reached, at the moment, the diesel engine body 1 is initially started but does not reach the working speed, at the moment, the starting motor 21 and the air distributor 31 are closed, the second air guide pipeline 42 supplies air to the air inlet cavity of the diesel engine body 1 to enable the diesel engine body 1 to reach the working speed more quickly to realize quick starting, further, the second set speed is greater than the first set speed, in this embodiment, the second set speed is the normal operating speed of the diesel engine body 1.

Specifically, the electric components in this embodiment are all electrically connected to the vehicle control system 6, and the vehicle control system 6 may control the motor starting assembly 2, the air starting assembly 3, and the acceleration starting assembly 4 according to the speed signal fed back by the speed sensor 5, or may manually control the motor starting assembly, which is not limited herein.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.