Explosion-proof diesel engine gear train structure

Abstract

The utility model relates to the field of explosion-proof diesel engines, and discloses an explosion-proof diesel engine wheel train structure which comprises an explosion-proof shell, a wheel train composed of a generator belt pulley, a crankshaft belt pulley, a water pump belt pulley and a fan belt pulley is arranged in the explosion-proof shell, and all the belt pulleys are connected through a first poly V-belt to drive all the belt pulleys to operate cooperatively. A second poly V-belt is additionally arranged between the water pump belt pulley and the fan belt pulley, and a standby motor and a standby power supply are arranged to drive the water pump belt pulley to rotate, so that the water pump belt pulley and the fan belt pulley can separate from the crankshaft and the generator to operate independently. When the engine is shut down due to faults in the high-temperature and high-pressure environment, the water pump and the fan can continue to work, and the interior of the anti-explosion shell is continuously cooled. The cooling effect of the fan and the water pump in the diesel engine is enhanced, and the utilization rate of cooling equipment is increased.

Description

Technical Field

[0001] The utility model relates to the field of explosion-proof diesel engines, in particular to a gear train structure of an explosion-proof diesel engine. Background Art

[0002] Explosion-proof diesel engines reduce the risk of heat radiation and sparks through reinforced casings, internal explosion-proof electrical equipment, and specially designed exhaust and cooling systems. They are suitable for use in mines, chemical plants, oil platforms, and other potentially explosive environments. Explosion-proof diesel engines typically operate in flammable and explosive environments by enclosing all spark-generating components and employing cooling measures. Even if combustion occurs, this prevents the engine from causing an explosion, thereby minimizing property damage and ensuring personnel safety.

[0003] The existing explosion-proof diesel engine gear train structure can refer to the Chinese patent document with the announcement number CN202001107U. The above patent document discloses a diesel engine water pump, fan, and generator gear train structure, which mainly includes a crankshaft pulley, a fan pulley, and a water pump pulley, and the three are synchronized by a multi-V belt to achieve the effect of cooling.

[0004] However, the above-mentioned gear train structure uses the crankshaft as the driving wheel. If the high temperature and high pressure cause the crankshaft to fail and stop, the fan and water pump will also stop running, thereby weakening the cooling effect and being unfavorable for troubleshooting. Utility Model Content

[0005] In order to enhance the cooling effect of the fan and water pump in the diesel engine and improve the utilization rate of the cooling equipment, the present application provides an explosion-proof diesel engine gear train structure.

[0006] This application provides an explosion-proof diesel engine gear train structure, which adopts the following technical solutions:

[0007] An explosion-proof diesel engine gear train structure includes an integrally formed explosion-proof housing, wherein a generator pulley, a crankshaft pulley, a water pump pulley, and a fan pulley are arranged inside the explosion-proof housing, and the gear train is connected by a first poly-V belt;

[0008] It also includes a backup motor and a backup power supply, wherein the backup power supply is used to power the backup motor, the output end of the backup motor is coaxially fixed with the water pump pulley, and a second multi-V belt is connected between the water pump pulley and the fan pulley.

[0009] By adopting this technical solution, a second poly-V belt is added between the water pump pulley and the fan pulley, and a backup motor and backup power supply are provided to drive the water pump pulley. This allows the water pump pulley and the fan pulley to operate independently from the crankshaft and generator. When the engine fails and shuts down in a high-temperature and high-pressure environment, the water pump and fan can continue to operate, continuously cooling the interior of the explosion-proof enclosure. This enhances the cooling effect of the fan and water pump and improves the utilization rate of the cooling equipment.

[0010] Furthermore, the backup motor is provided with a pressure switch, and the pressure switch is used to control the operation of the backup motor.

[0011] By adopting the above technical solution, a pressure switch is set to control the backup motor. When the air pressure inside the explosion-proof housing reaches the limit of the pressure switch, the backup motor can start automatically, thereby improving the degree of automation of the equipment.

[0012] Furthermore, the standby motor is provided with a temperature control switch, and the temperature control switch is used to control the operation of the standby motor.

[0013] By adopting the above technical solution, a temperature control switch is set to control the backup motor. When the temperature inside the explosion-proof housing reaches the limit of the temperature control switch, the backup motor can start automatically, thereby improving the degree of automation of the equipment.

[0014] Furthermore, a pressure relief valve is provided on the explosion-proof housing.

[0015] By adopting the above technical solution, a pressure relief valve is provided on the explosion-proof housing to prevent excessive pressure from damaging the gear train or causing the housing to burst, thereby further improving the explosion-proof performance.

[0016] Furthermore, it also includes an insulated box, which is filled with dry ice. The insulated box is provided with a gas nozzle, which is used to release carbon dioxide, and a sealing plug is inserted into the gas nozzle.

[0017] By adopting the above technical solution, an insulated box filled with dry ice is set inside the explosion-proof shell. When the temperature is too high, the sealing plug is pulled out and the air nozzle is opened. The dry ice absorbs heat and sublimates to release carbon dioxide, which can quickly achieve the purpose of cooling.

[0018] Furthermore, a pull rope is connected to the blocking plug, a reel is fixed to the output shaft of the backup motor, and one end of the pull rope away from the blocking plug is wound and fixed on the reel.

[0019] By adopting the above technical solution, a reel is set on the output shaft of the backup motor, and a pull rope is set between the reel and the sealing plug. When the output shaft of the backup motor is started and rotated, the pull rope can be reeled in. The tension generated by the shortening of the pull rope can pull out the sealing plug, thereby automatically releasing carbon dioxide.

[0020] Furthermore, the pressure relief valve is located on the bottom surface of the explosion-proof housing.

[0021] By adopting the above technical solution, the pressure relief valve is set on the bottom surface of the explosion-proof casing, so that the pressure relief port faces the ground, which can minimize the impact of air pressure on external equipment and personnel during the pressure relief process, thereby improving the safety of the equipment.

[0022] Furthermore, an indicator light is provided on the outer wall of the explosion-proof housing, and the indicator light is electrically connected to the backup power supply and the backup motor. When the backup motor is in working state, the indicator light is on.

[0023] By adopting the above technical solution, an indicator light electrically connected to the backup motor and the backup power supply is set. When the backup motor is running, the indicator light lights up synchronously, intuitively showing that the engine inside the explosion-proof casing has stopped and is in an abnormal state of high temperature or high pressure, thereby serving as a warning.

[0024] Furthermore, the wheel train further includes a plurality of tensioning pulleys, and the tensioning pulleys are used to adjust the tension of the first poly-V belt and / or the second poly-V belt.

[0025] By adopting the above technical solution, the provision of a tensioning pulley can adjust the tension of the first poly-V belt and the second poly-V belt according to actual conditions, thereby helping to improve the stability and service life of the wheel train.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. By adding a second poly-V belt between the water pump pulley and the fan pulley, and providing a backup motor and backup power supply to drive the water pump pulley, the water pump pulley and the fan pulley can be separated from the crankshaft and generator to operate independently. When the engine fails and shuts down in a high-temperature and high-pressure environment, the water pump and fan can continue to operate, continuously cooling the interior of the explosion-proof enclosure, thereby enhancing the cooling effect of the fan and water pump and improving the utilization rate of the cooling equipment;

[0028] 2. By setting a pressure switch to control the backup motor, when the air pressure inside the explosion-proof enclosure reaches the limit of the pressure switch, the backup motor can start automatically, thereby improving the degree of automation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the explosion-proof diesel engine gear train structure of an embodiment of the present application.

[0030] Figure 2 It is a schematic diagram of the internal structure of the explosion-proof casing.

[0031] Figure 3 It is a schematic diagram of the structure of the insulation box.

[0032] Description of reference numerals:

[0033] 1. Explosion-proof housing; 11. Pressure relief valve; 12. Indicator light; 2. Generator pulley; 3. Crankshaft pulley; 4. Fan pulley; 41. Water pump pulley; 5. First multi-V belt; 6. Backup motor; 61. Pressure switch; 62. Temperature control switch; 63. Reel; 7. Backup power supply; 8. Second multi-V belt; 9. Insulation box; 91. Air nozzle; 92. Sealing plug; 93. Pull rope; 10. Tensioner. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-3 Provide a clear and complete description of the technical solution of this application.

[0035] The embodiments of the present application disclose an explosion-proof diesel engine gear train structure.

[0036] Reference Figure 1 、 Figure 2 An explosion-proof diesel engine gear train structure includes an explosion-proof casing 1, inside which is a gear train consisting of a generator pulley 2, a crankshaft pulley 3, a water pump pulley 41 and a fan pulley 4, and each pulley is connected by a first poly-V belt 5. The crankshaft pulley 3 serves as a driving pulley to drive each pulley to operate in coordination.

[0037] Reference Figure 1 、 Figure 2 The explosion-proof housing 1 also includes a backup motor 6 and a backup power supply 7. The backup power supply 7 can supply power to the backup motor 6. A second poly-V belt 8 is connected between the water pump pulley 41 and the fan pulley 4. The output end of the backup motor 6 is coaxially fixed with the water pump pulley 41. The backup motor 6 drives the water pump pulley 41 to rotate, thereby allowing the water pump pulley 41 and the fan pulley 4 to operate independently from the crankshaft and the generator. When the engine fails and shuts down in a high-temperature and high-pressure environment, the water pump and fan can continue to operate, continuously cooling the interior of the explosion-proof housing 1, thereby enhancing the cooling effect of the fan and water pump and improving the utilization rate of the cooling equipment.

[0038] Reference Figure 2 In addition, the wheel train also includes multiple tensioning pulleys 10. The tensioning pulleys 10 can be installed at different positions of the first poly-V belt 5 or the second poly-V belt 8 according to actual conditions to adjust the tension, thereby helping to improve the stability and service life of the wheel train.

[0039] Reference Figure 2The backup motor 6 is equipped with a pressure switch 61. When the pressure inside the explosion-proof housing 1 reaches the limit of the pressure switch 61, the backup motor 6 automatically turns on. Furthermore, the backup motor 6 is equipped with a temperature control switch 62. When the temperature inside the explosion-proof housing 1 rises to the limit of the temperature control switch 62, the backup motor 6 automatically turns on. Through dual-circuit control of air pressure and temperature, the backup motor 6 automatically detects and drives the water pump pulley 41 and fan pulley 4 to cool the system, regardless of extreme pressure or temperature anomalies.

[0040] Reference Figure 3 In order to improve the explosion-proof capability, the explosion-proof housing 1 is preferably made of one-piece steel. The explosion-proof housing 1 is provided with a pressure relief valve 11, which can prevent excessive pressure from damaging the gear train or causing the housing to burst, thereby further improving the explosion-proof performance. It is preferred to install the pressure relief valve 11 on the bottom surface of the explosion-proof housing 1 so that the pressure relief port faces the ground, which can minimize the impact of air pressure on external equipment and personnel during the pressure relief process, thereby improving the safety of the equipment. An indicator light 12 is provided on the top of the outer wall of the explosion-proof housing 1. The indicator light 12 is electrically connected to the backup power supply 7 and the backup motor 6. When the backup motor 6 is in working condition, the indicator light 12 lights up. It intuitively shows that the engine inside the explosion-proof housing 1 has stopped at this time and is in an abnormal state of high temperature or high pressure, thereby serving as a warning reminder.

[0041] Reference Figure 1 、 Figure 3 , an insulated box 9 is detachably connected to the explosion-proof housing 1, and dry ice is filled in the insulated box 9. An air nozzle 91 is provided on the insulated box 9, and the air nozzle 91 extends into the interior of the explosion-proof housing 1. A sealing plug 92 is inserted into the air nozzle 91, and carbon dioxide can be released through the air nozzle 91 when the sealing plug 92 is pulled out. Dry ice absorbs heat and sublimates to release carbon dioxide, which can quickly achieve the purpose of cooling. A pull rope 93 is connected to the end of the sealing plug 92, and a reel 63 is fixed on the output shaft of the standby motor 6. The end of the pull rope 93 away from the sealing plug 92 is wound and fixed on the reel 63. After the standby motor 6 is started, the output shaft rotates to reel the pull rope 93. The tension generated by the shortening of the pull rope 93 can pull out the sealing plug 92, thereby automatically releasing carbon dioxide and timely cooling the interior of the explosion-proof housing 1.

[0042] The implementation principle of an explosion-proof diesel engine gear train structure in an embodiment of the present application is: when the engine is shut down, the crankshaft pulley 3 stops rotating, the air pressure / temperature rises to the limit value of the pressure switch 61 / temperature switch, the standby motor 6 starts, drives the water pump pulley 41 to rotate, and drives the fan pulley 4 through the second multi-V belt 8 to rotate. The water pump and fan are separated from the engine and operate independently, continuously cooling the inside of the explosion-proof casing 1, thereby enhancing the cooling effect of the explosion-proof diesel engine and improving the utilization rate of the cooling equipment.

[0043] The above are all preferred embodiments of the present application. Obviously, the embodiments described above are only preferred embodiments of the present application and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made by ordinary technicians in this field based on the structure, shape, and principle of the present application without making any creative work should be covered within the scope of protection of the present application.

Claims

1. An explosion-proof diesel engine gear train structure, characterized by: It comprises an integrally formed explosion-proof housing (1), wherein a generator pulley (2), a crankshaft pulley (3), a water pump pulley (41) and a fan pulley (4) are provided inside the explosion-proof housing (1), and the wheel system is connected via a first poly-V belt (5); The system further comprises a standby motor (6) and a standby power supply (7), wherein the standby power supply (7) is used to supply power to the standby motor (6), an output end of the standby motor (6) is coaxially fixed with the water pump pulley (41), and a second poly-V belt (8) is connected between the water pump pulley (41) and the fan pulley (4).

2. The explosion-proof diesel engine gear train structure according to claim 1, characterized in that: The standby motor (6) is provided with a pressure switch (61), and the pressure switch (61) is used to control the operation of the standby motor (6).

3. The explosion-proof diesel engine gear train structure according to claim 1 or 2, characterized in that: The standby motor (6) is provided with a temperature control switch (62), and the temperature control switch (62) is used to control the operation of the standby motor (6).

4. The explosion-proof diesel engine gear train structure according to claim 3, characterized in that: The explosion-proof housing (1) is provided with a pressure relief valve (11).

5. The explosion-proof diesel engine gear train structure according to claim 4, characterized in that: The invention also comprises an insulation box (9), wherein dry ice is contained in the insulation box (9), and an air nozzle (91) is provided on the insulation box (9), wherein the air nozzle (91) is used to release carbon dioxide, and a sealing plug (92) is inserted into the air nozzle (91).

6. The explosion-proof diesel engine gear train structure according to claim 5, characterized in that: A pull rope (93) is connected to the blocking plug (92), a reel (63) is fixed to the output shaft of the standby motor (6), and one end of the pull rope (93) away from the blocking plug (92) is wound and fixed on the reel (63).

7. The explosion-proof diesel engine gear train structure according to claim 4, characterized in that: The pressure relief valve (11) is located on the bottom surface of the explosion-proof housing (1).

8. The explosion-proof diesel engine gear train structure according to claim 1, characterized in that: An indicator light (12) is provided on the outer wall of the explosion-proof housing (1), and the indicator light (12) is electrically connected to the backup power supply (7) and the backup motor (6). When the backup motor (6) is in a working state, the indicator light (12) lights up.

9. The explosion-proof diesel engine gear train structure according to claim 1, characterized in that: The wheel train further comprises a plurality of tensioning wheels (10), wherein the tensioning wheels (10) are used to adjust the tension of the first poly-V belt (5) and / or the second poly-V belt (8).

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