Overload protection device for power generation of hydrogen fuel cell

Abstract

The invention discloses an overload protection device for hydrogen fuel cell power generation, and relates to the technical field of hydrogen cell protection, the overload protection device comprises a machine shell, a moving contact, a static contact and a current transformer, the top of the machine shell is fixedly provided with a shell cover, one side of the machine shell is provided with an oil tank part, a pump body is fixedly arranged between the oil tank part and the machine shell, and the oil tank part is provided with an oil inlet. The discharging pipe is installed on the lower portion of the side, away from the oil tank part, of the machine shell, a protection assembly is arranged in the machine shell, and a heat dissipation assembly is arranged at the top of the shell cover; the protection assembly comprises an oil inlet pipe and an oil return pipe. The heat dissipation assembly comprises a main belt wheel and a belt part, the main belt wheel is fixedly connected to the outer side of the upper shaft, the belt part is connected with the main belt wheel in a matched mode, and the problems that only a small part of oil flows to the position between the moving contact and the static contact in the oil injection operation of the device, the moving efficiency and the low heat diffusion effect of electric arcs of the part are reduced, and the service life of the device is prolonged are solved. And certain defects exist.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen battery protection, and in particular to an overload protection device for hydrogen fuel cell power generation. Background Art

[0002] A hydrogen fuel cell is a power generation device that directly converts the chemical energy of hydrogen and oxygen into electrical energy. The overload protection device of a hydrogen fuel cell power generation system is a commonly used device in circuits. However, when the overload protection device of a hydrogen fuel cell power generation system is in use, it is prone to arcing. The arc is mainly generated when the contacts disconnect the circuit. The high temperature will burn the contacts and insulation. In severe cases, it may even cause a phase short circuit or electrical explosion, endangering the safety of personnel and equipment.

[0003] For example, a hydrogen fuel cell power generation system overload protection device with publication number CN116072486B includes a main body mechanism, the main body mechanism includes a casing, the inner cavity of the casing is filled with cold oil, the top of the casing is provided with a casing cover, the top of the casing cover is provided with an insulating sleeve, one end of the insulating sleeve passes through the inner cavity of the casing cover and is provided with a current transformer, by providing an oil-activating mechanism, using an external control switch to start the oil pump, the oil in the oil tank is transported to the casing by the oil pump, and then enters the oil tank through the casing through the oil outlet pipe, The effect of recycling the cold oil is achieved, and when the cold oil is discharged from the oil inlet pipe, the cold oil will impact the stirring blade, causing the support rod to rotate, thereby achieving the effect of stirring the cold oil in the inner cavity of the casing, causing the arc in the cold oil to move, thereby improving the arc extinguishing effect. However, the oil injection operation of the device only has a small part flowing between the moving contact and the static contact, reducing the movement efficiency of this part of the arc and the low heat diffusion effect, which has certain defects, and the device also requires a motor to dissipate heat from the oil tank, which also increases cost losses.

[0004] Therefore, we propose an overload protection device for hydrogen fuel cell power generation to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of the present invention is to provide an overload protection device for hydrogen fuel cell power generation to solve the problem that only a small portion of the oil injection operation of the device flows between the moving contact and the static contact, reducing the movement efficiency of this part of the arc and the low heat diffusion effect, and having certain defects.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an overload protection device for hydrogen fuel cell power generation, comprising a housing, a moving contact, a static contact, and a current transformer, wherein a housing cover is fixedly mounted on the top of the housing, an oil tank portion is mounted on one side of the housing, and a pump body is fixedly mounted between the oil tank portion and the housing;

[0007] Also includes:

[0008] The discharge pipe is installed at the lower part of the side of the machine housing away from the oil tank part. A protective component is provided inside the machine housing, a heat dissipation component is provided on the top of the housing cover, a protective shell is fixedly installed on the inner bottom surface of the machine housing, an electric push rod is fixedly installed on the top of the protective shell, the top of the telescopic part of the electric push rod is fixedly connected to a mounting plate, and the moving contacts are evenly mounted on the mounting plate;

[0009] The inlet end of the pump body is connected to the oil tank part through a pipeline, the static contact is located inside the shell cover, the current transformer is installed on the top of the static contact, and the static contact passes through the shell cover and is installed with an insulating sleeve;

[0010] The protection assembly includes an oil inlet pipe and an oil return pipe. The outlet end of the pump body is connected to the oil inlet pipe. The end of the oil inlet pipe away from the pump body is located inside the machine casing. A nozzle is installed on the outside of the oil inlet pipe. One end of the oil return pipe is connected to the oil tank part, and the other end of the oil return pipe is connected to the inside of the machine casing. A diverter plate is symmetrically fixed on the top of the mounting plate, and a mounting box is symmetrically fixed on the top of the mounting plate.

[0011] A left groove is provided at the lower portion of one side of the installation box, and a right groove is provided at the other side of the installation box. Impeller 1 is installed on one side of the interior of the installation box, and the impeller 1 is rotatably connected to the installation plate. An auxiliary impeller is fixedly connected to the top of the impeller 1, and impeller 2 is installed on the other side of the interior of the impeller 1, and the impeller 2 is meshed and connected to the auxiliary impeller, and the impeller 2 is rotatably connected to the installation plate.

[0012] The top of the auxiliary impeller is fixedly connected to a lower shaft, the lower shaft is rotatably connected to the mounting box, the top of the lower shaft is fixedly connected to a reciprocating screw, the top of the reciprocating screw is fixedly connected to an upper shaft, an adjusting sleeve is sleeved on the outer side of the reciprocating screw, one side of the adjusting sleeve is fixedly connected to a limit rod, and a guide wheel is fixedly installed on the inner top surface of the shell cover;

[0013] The inner top surface of the shell cover is symmetrically connected to the side shaft for rotation, the inner side wall of the shell cover is fixedly connected to a fixing plate, the upper outer side of the side shaft is fixedly connected to a gear, the inner side wall of the shell cover is fixedly connected to a limit block, the limit block is located on one side of the fixing plate, the inner side of the limit block is slidably connected to a rack, the rack is meshed with the gear, and a pull rope is fixedly connected to the side of the rack close to the adjusting sleeve, and the pull rope passes around the upper surface of the guide wheel and is fixedly connected to the adjusting sleeve;

[0014] A fixed block is fixedly connected to one side of the top of the rack, and a stopper is fixedly connected to the inner top surface of the shell cover. The stopper is located on one side of the guide wheel, and a spring is fixedly installed between the fixed block and the stopper;

[0015] The heat dissipation assembly includes a main pulley and a belt portion. The main pulley is fixedly connected to the outer side of the upper shaft, and the belt portion is adaptively connected to the main pulley.

[0016] Preferably, the diverter plates are provided in two groups, each group of the diverter plates includes two symmetrically arranged diverter plates, and two adjacent diverter plates are arranged in an inverted figure eight shape.

[0017] By adopting the above technical solution, the oil spray is used to drive the impeller 1 and the impeller 2 to rotate, which facilitates the heat dissipation of the arc disturbance between the moving contact and the static contact, thereby improving the heat dissipation effect of the arc at this location.

[0018] Preferably, the impeller 1 is rotatably connected to the left groove, the impeller 2 is rotatably connected to the right groove, a protection box is fixedly connected to the upper part of one side of the installation box, and the auxiliary impeller is located on one side of the protection box.

[0019] By adopting the above technical solution, the protective box is used to block the auxiliary impeller to prevent the auxiliary impeller from reversing, thereby keeping the auxiliary impeller and the impeller 1 rotating in the same direction.

[0020] Preferably, the outer side of the lower portion of the reciprocating screw is fixedly connected to a lower disc body, the outer side of the upper portion of the reciprocating screw is fixedly connected to an upper disc body, and the adjustment sleeve is located between the lower disc body and the upper disc body.

[0021] By adopting the above technical solution, the lower disc body and the upper disc body are used to limit the adjustment sleeve.

[0022] Preferably, the limiting rod is L-shaped, the limiting rod is slidably connected to the shell cover, and the adjusting sleeve is threadedly connected to the reciprocating screw.

[0023] By adopting the above technical solution, the limiting rod limits the adjusting sleeve, so that the adjusting sleeve can move back and forth up and down.

[0024] Preferably, the side shaft is rotatably connected to the fixed plate, and the bottom of the side shaft is fixedly connected to a stirring rod.

[0025] By adopting the above technical solution, the fixed plate is used to assist in supporting and rotating the lateral shaft.

[0026] Preferably, both ends of the spring are fixedly connected to a fixed block and a stop block respectively, and the spring is located above the pull rope.

[0027] By adopting the above technical solution, the spring is used to assist the resetting of the rack.

[0028] Preferably, the top of the oil tank portion is fixedly connected to a mounting bracket, the top of the mounting bracket is rotatably connected to a rotating shaft, the upper outer side of the rotating shaft is fixedly connected to a slave pulley, and the slave pulley is adaptively connected to the belt portion.

[0029] By adopting the above technical solution, the upper shaft drives the main pulley to rotate, the main pulley drives the slave pulley to rotate through the belt part, the slave pulley drives the rotating shaft to rotate, and the rotating shaft drives the fan blades to rotate, which can dissipate heat to the oil tank.

[0030] Preferably, the bottom end of the rotating shaft is fixedly connected to a fan blade through a mounting frame, and two rotating shafts are symmetrically arranged. The number of the rotating shafts is the same as that of the upper shaft and they correspond one to one, and the two pulleys are separated and arranged in an upper and lower manner.

[0031] By adopting the above technical solution, the two symmetrically arranged upper shafts are respectively provided with independent rotating shafts and pulleys, so that the two fan blades can blow to the top of the oil tank part.

[0032] Compared with the prior art, the present invention has the following advantages: a protective component is provided, and the oil spray is used to drive the impeller 1 and the impeller 2 to rotate, thereby facilitating the heat dissipation of the arc disturbance between the moving contact and the static contact, thereby improving the heat dissipation effect of the arc at that location;

[0033] 1. A protective component is provided. The pump body pumps oil from the oil tank so that the oil is input into the machine casing from the oil inlet pipe and flows into the oil tank from the return oil pipe. A part of the oil in the oil inlet pipe is sprayed out from the nozzle on the oil inlet pipe. The oil is guided by the diverter plate so that the spraying direction is between the moving contact and the static contact. The left and right grooves on the installation box expose part of the impeller 1 and the impeller 2, so that the oil blows the impeller 1 and the impeller 2, thereby blowing the heat of the arc between the moving contact and the static contact. The rotation of the impeller 1 drives the rotation of the lower shaft, and the rotation of the impeller 2 drives the auxiliary impeller to rotate, further driving the rotation of the lower shaft. The rotation of the lower shaft drives the reciprocating screw to rotate. The limit rod limits the adjusting sleeve, so that the adjusting sleeve moves back and forth up and down. When the section sleeve moves downward, it drives the pull rope downward, and the guide wheel guides the pull rope, so that the pull rope pulls the rack to move horizontally, the rack drives the gear to rotate, and the rack drives the fixed block to compress the spring. When the adjusting sleeve moves up and resets, the rack resets, and the gear rotates and resets, so that the gear and the side shaft rotate back and forth, and the side shaft drives the stirring rod at the bottom to rotate, so as to further disturb the oil inside the machine casing, and the oil spray drives the impeller 1 and the impeller 2 to rotate, so as to dissipate the heat of the arc disturbance between the moving contact and the static contact, thereby improving the heat dissipation effect of the arc at this location, and solving the problem that only a small part of the oil spraying operation of the device flows between the moving contact and the static contact, reducing the movement efficiency and low heat diffusion effect of this part of the arc, and having certain defects;

[0034] 2. A heat dissipation component is provided. When the reciprocating screw rotates, the reciprocating screw drives the upper shaft at the top to rotate, the upper shaft drives the main pulley to rotate, the main pulley drives the slave pulley to rotate through the belt portion, the slave pulley drives the rotating shaft to rotate, and the rotating shaft drives the fan blades to rotate. The two symmetrically arranged upper shafts are respectively provided with separate rotating shafts and slave pulleys, so that the two fan blades can blow on the top of the oil tank portion to achieve a heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the first three-dimensional overall structure of the present invention;

[0036] Figure 2 This is a schematic diagram of the second three-dimensional overall structure of the present invention;

[0037] Figure 3 This is a schematic diagram of the installation structure of the protective housing of the present invention;

[0038] Figure 4 For the present invention Figure 3 A in the middle is an enlarged structural diagram;

[0039] Figure 5 This is a schematic diagram of the internal structure of the shell cover of the present invention;

[0040] Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in the middle;

[0041] Figure 7 For the present invention Figure 5 The enlarged structural diagram at C in the middle;

[0042] Figure 8 This is a schematic diagram of the impeller installation structure of the present invention;

[0043] Figure 9 This is a schematic structural diagram of the heat dissipation assembly of the present invention;

[0044] Figure 10 For the present invention Figure 9 Enlarged structural diagram at point D in the middle.

[0045] Figure: 1. Casing; 2. Casing cover; 3. Oil tank; 4. Pump body; 5. Discharge pipe; 6. Protective assembly; 61. Oil inlet pipe; 62. Oil return pipe; 63. Diverter plate; 64. Mounting box; 65. Protective box; 66. Impeller 1; 67. Auxiliary impeller; 68. Impeller 2; 69. Right groove; 610. Lower shaft; 611. Lower disc; 612. Reciprocating screw; 613. Adjusting sleeve; 614. Limit rod; 615. Upper disc; 616. Upper shaft; 617 , guide wheel; 618, side shaft; 619, fixed plate; 620, gear; 621, limit block; 622, rack; 623, pull rope; 624, fixed block; 625, stop block; 626, spring; 7, heat dissipation component; 71, main pulley; 72, belt part; 73, mounting bracket; 74, rotating shaft; 75, slave pulley; 76, fan blade; 8, protective shell; 9, mounting plate; 10, moving contact; 11, static contact; 12, current transformer; 13, insulating sleeve. DETAILED DESCRIPTION

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0047] See also Figure 1-10 The present invention provides a technical solution: an overload protection device for hydrogen fuel cell power generation, comprising a machine housing 1, a moving contact 10, a static contact 11 and a current transformer 12, a shell cover 2 fixedly mounted on the top of the machine housing 1, an oil tank part 3 mounted on one side of the machine housing 1, and a pump body 4 fixedly mounted between the oil tank part 3 and the machine housing 1.

[0048] The discharge pipe 5 is installed at the lower part of the side of the machine casing 1 away from the oil tank part 3. A protective shell 8 is fixedly installed on the inner bottom surface of the machine casing 1. An electric push rod is fixedly installed on the top of the protective shell 8. The top of the telescopic part of the electric push rod is fixedly connected to a mounting plate 9, and the moving contacts 10 are evenly installed on the mounting plate 9.

[0049] The inlet end of the pump body 4 is connected to the oil tank part 3 through a pipeline. The static contact 11 is located inside the shell cover 2. The current transformer 12 is installed on the top of the static contact 11. The static contact 11 passes through the shell cover 2 and is sleeved with an insulating sleeve 13.

[0050] A protective assembly 6 is provided inside the casing 1, and the protective assembly 6 includes an oil inlet pipe 61 and an oil return pipe 62. The outlet end of the pump body 4 is connected to the oil inlet pipe 61, and the end of the oil inlet pipe 61 away from the pump body 4 is located inside the casing 1. A nozzle is installed on the outside of the oil inlet pipe 61, one end of the oil return pipe 62 is connected to the oil tank part 3, and the other end of the oil return pipe 62 is connected to the interior of the casing 1. A diverter plate 63 is symmetrically fixed to the top of the mounting plate 9, and a mounting box 64 is symmetrically fixed to the top of the mounting plate 9.

[0051] Two groups of diverter plates 63 are provided. Each group of diverter plates 63 includes two symmetrically arranged diverter plates 63. Two adjacent diverter plates 63 are arranged in an inverted figure eight shape.

[0052] A left groove is provided at the lower portion of one side of the installation box 64, and a right groove 69 is provided at the other side of the installation box 64. Impeller 1 66 is installed on one side of the interior of the installation box 64, and impeller 1 66 is rotatably connected to the installation plate 9. An auxiliary impeller 67 is fixedly connected to the top of impeller 1 66, and impeller 2 68 is installed on the other side of the interior of impeller 1 66, and impeller 2 68 is meshed and connected to the auxiliary impeller 67, and impeller 2 68 is rotatably connected to the installation plate 9.

[0053] Impeller 1 66 is rotatably connected to the left groove, impeller 2 68 is rotatably connected to the right groove 69 , a protection box 65 is fixedly connected to the upper part of one side of the installation box 64 , and an auxiliary impeller 67 is located on one side of the protection box 65 .

[0054] The top of the auxiliary impeller 67 is fixedly connected to the lower shaft 610, and the lower shaft 610 is rotatably connected to the mounting box 64. The top of the lower shaft 610 is fixedly connected to the reciprocating screw 612, and the top of the reciprocating screw 612 is fixedly connected to the upper shaft 616. The outer side of the reciprocating screw 612 is sleeved with an adjusting sleeve 613, and one side of the adjusting sleeve 613 is fixedly connected to a limiting rod 614. The inner top surface of the shell cover 2 is fixedly installed with a guide wheel 617.

[0055] The lower outer side of the reciprocating screw rod 612 is fixedly connected to the lower disk body 611, and the upper outer side of the reciprocating screw rod 612 is fixedly connected to the upper disk body 615. The adjustment sleeve 613 is located between the lower disk body 611 and the upper disk body 615. The limit rod 614 is L-shaped, and the limit rod 614 is slidably connected to the shell cover 2. The adjustment sleeve 613 is threadedly connected to the reciprocating screw rod 612.

[0056] The inner top surface of the shell cover 2 is symmetrically connected to the side shaft 618 for rotation, the inner side wall of the shell cover 2 is fixedly connected to the fixed plate 619, the upper outer side of the side shaft 618 is fixedly connected to the gear 620, the inner side wall of the shell cover 2 is fixedly connected to the limit block 621, the limit block 621 is located on one side of the fixed plate 619, the inner sliding connection of the limit block 621 is connected to the rack 622, the rack 622 is meshed with the gear 620, the rack 622 is fixedly connected to the side close to the adjustment sleeve 613 with a pull rope 623, the pull rope 623 passes around the upper surface of the guide wheel 617 and is fixedly connected to the adjustment sleeve 613.

[0057] The side shaft 618 is rotatably connected to the fixed plate 619 , and a stirring rod is fixedly connected to the bottom of the side shaft 618 .

[0058] A fixing block 624 is fixedly connected to one side of the top of the rack 622 , and a stopper 625 is fixedly connected to the inner top surface of the shell cover 2 . The stopper 625 is located on one side of the guide wheel 617 , and a spring 626 is fixedly installed between the fixing block 624 and the stopper 625 .

[0059] Both ends of the spring 626 are fixedly connected to the fixing block 624 and the stop block 625 respectively, and the spring 626 is located above the pull rope 623.

[0060] Example 1: Figure 1-8As shown, a protective component 6 is provided, and the pump body 4 pumps oil from the oil tank part 3, so that the oil is input into the machine casing 1 from the oil inlet pipe 61 and flows into the oil tank part 3 from the return oil pipe 62. A part of the oil in the oil inlet pipe 61 is sprayed out from the nozzle on the oil inlet pipe 61, and the oil is guided by the diverter plate 63 so that the spraying direction is between the moving contact 10 and the static contact 11. The left groove and the right groove 69 on the installation box 64 expose part of the impeller 1 66 and the impeller 2 68, which is convenient for the oil to blow on the impeller 1 66 and the impeller 2 68, thereby blowing the arc between the moving contact 10 and the static contact 11 to dissipate heat.

[0061] The rotation of impeller 1 66 drives the lower shaft 610 to rotate, and the rotation of impeller 2 68 drives the auxiliary impeller 67 to rotate, further driving the lower shaft 610 to rotate. The rotation of the lower shaft 610 drives the reciprocating screw rod 612 to rotate. The limiting rod 614 limits the adjusting sleeve 613, so that the adjusting sleeve 613 moves back and forth up and down. When the adjusting sleeve 613 moves downward, it drives the pull rope 623 to move downward. The guide wheel 617 guides the pull rope 623, so that the pull rope 623 pulls the rack 622 to move horizontally, and the rack 622 drives the gear 620 to rotate, and the rack 622 drives the fixing block 624 to compress the spring 626.

[0062] When the adjustment sleeve 613 moves upward and resets, the rack 622 resets and the gear 620 rotates and resets, so that the gear 620 and the side shaft 618 rotate back and forth, and the side shaft 618 drives the stirring rod at the bottom to rotate, so as to further disturb the oil inside the machine casing 1. The oil spray drives the impeller 1 66 and the impeller 2 68 to rotate, so as to dissipate the heat of the arc disturbance between the moving contact 10 and the static contact 11, thereby improving the heat dissipation effect of the arc at this location.

[0063] A heat dissipation assembly 7 is provided on the top of the housing cover 2 . The heat dissipation assembly 7 includes a main pulley 71 and a belt portion 72 . The main pulley 71 is fixedly connected to the outer side of the upper shaft 616 , and the belt portion 72 is adaptively connected to the main pulley 71 .

[0064] The top of the oil tank part 3 is fixedly connected to a mounting bracket 73 , the top of the mounting bracket 73 is rotatably connected to a rotating shaft 74 , the upper outer side of the rotating shaft 74 is fixedly connected to a secondary pulley 75 , and the secondary pulley 75 is adaptively connected to the belt part 72 .

[0065] The bottom end of the rotating shaft 74 passes through the mounting frame 73 and is fixedly connected to the fan blade 76. There are two rotating shafts 74 symmetrically arranged. The number of rotating shafts 74 is the same as that of the upper shaft 616, and they correspond one to one. The two pulleys 75 are separated and arranged in an upper and lower manner.

[0066] Example 2: Figure 9-10As shown, a heat dissipation component 7 is provided. When the reciprocating screw 612 rotates, the reciprocating screw 612 drives the upper shaft 616 at the top to rotate, and the upper shaft 616 drives the main pulley 71 to rotate. The main pulley 71 drives the slave pulley 75 to rotate through the belt portion 72, and the slave pulley 75 drives the rotating shaft 74 to rotate, and the rotating shaft 74 drives the fan blades 76 to rotate. The two symmetrically arranged upper shafts 616 are respectively provided with separate rotating shafts 74 and slave pulleys 75, so that the two fan blades 76 can blow on the top of the oil tank portion 3 to achieve a heat dissipation effect.

[0067] Working principle: When using this device, first, Figure 1-10 As shown, the pump body 4 pumps oil from the oil tank portion 3, so that the oil is input into the machine casing 1 from the oil inlet pipe 61 and flows into the oil tank portion 3 from the oil return pipe 62. A portion of the oil in the oil inlet pipe 61 is sprayed out from the nozzle on the oil inlet pipe 61. The oil is guided by the diverter plate 63 so that the spraying direction is between the moving contact 10 and the static contact 11. The left groove and the right groove 69 on the mounting box 64 partially expose the impeller 1 66 and the impeller 2 68, which facilitates the oil to blow on the impeller 1 66 and the impeller 2 68, thereby blowing the arc between the moving contact 10 and the static contact 11 to dissipate heat.

[0068] The rotation of impeller 1 66 drives the lower shaft 610 to rotate, and the rotation of impeller 2 68 drives the auxiliary impeller 67 to rotate, further driving the lower shaft 610 to rotate. The rotation of the lower shaft 610 drives the reciprocating screw rod 612 to rotate. The limiting rod 614 limits the adjusting sleeve 613, so that the adjusting sleeve 613 moves back and forth up and down. When the adjusting sleeve 613 moves downward, it drives the pull rope 623 to move downward. The guide wheel 617 guides the pull rope 623, so that the pull rope 623 pulls the rack 622 to move horizontally, and the rack 622 drives the gear 620 to rotate, and the rack 622 drives the fixing block 624 to compress the spring 626.

[0069] When the adjustment sleeve 613 moves upward and resets, the rack 622 resets and the gear 620 rotates and resets, so that the gear 620 and the side shaft 618 rotate back and forth. The side shaft 618 drives the stirring rod at the bottom to rotate, so as to further disturb the oil inside the machine casing 1. The oil spray drives the impeller 1 66 and the impeller 2 68 to rotate, so as to dissipate the heat of the arc disturbance between the moving contact 10 and the static contact 11.

[0070] When the reciprocating screw 612 rotates, the reciprocating screw 612 drives the upper shaft 616 at the top to rotate, the upper shaft 616 drives the main pulley 71 to rotate, the main pulley 71 drives the slave pulley 75 to rotate through the belt portion 72, the slave pulley 75 drives the rotating shaft 74 to rotate, and the rotating shaft 74 drives the fan blades 76 to rotate. The two symmetrically arranged upper shafts 616 are respectively provided with separate rotating shafts 74 and slave pulleys 75, so that the two fan blades 76 can blow on the top of the oil tank portion 3.

[0071] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0072] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An overload protection device for hydrogen fuel cell power generation, comprising a housing (1), a moving contact (10), a stationary contact (11) and a current transformer (12), wherein a housing cover (2) is fixedly mounted on the top of the housing (1), an oil tank portion (3) is mounted on one side of the housing (1), and a pump body (4) is fixedly mounted between the oil tank portion (3) and the housing (1); It is characterized in that Also includes: A discharge pipe (5) is installed at the lower part of the side of the machine housing (1) away from the oil tank part (3); a protective component (6) is arranged inside the machine housing (1); a heat dissipation component (7) is arranged on the top of the housing cover (2); a protective shell (8) is fixedly installed on the inner bottom surface of the machine housing (1); an electric push rod is fixedly installed on the top of the protective shell (8); a mounting plate (9) is fixedly connected to the top of the telescopic part of the electric push rod; and the moving contact (10) is evenly mounted on the mounting plate (9); The inlet end of the pump body (4) is connected to the oil tank part (3) through a pipeline, the static contact (11) is located inside the shell cover (2), the current transformer (12) is installed on the top of the static contact (11), and the static contact (11) passes through the shell cover (2) and is sleeved with an insulating sleeve (13); The protection component (6) comprises an oil inlet pipe (61) and an oil return pipe (62), the outlet end of the pump body (4) is connected to the oil inlet pipe (61), one end of the oil inlet pipe (61) away from the pump body (4) is located inside the machine casing (1), a nozzle is installed on the outside of the oil inlet pipe (61), one end of the oil return pipe (62) is connected to the oil tank part (3), and the other end of the oil return pipe (62) is connected to the inside of the machine casing (1), a diverter plate (63) is symmetrically fixed on the top of the mounting plate (9), and a mounting box (64) is symmetrically fixed on the top of the mounting plate (9); A left groove is provided at the lower part of one side of the installation box (64), and a right groove (69) is provided at the other side of the installation box (64). An impeller 1 (66) is installed at one side of the interior of the installation box (64), and the impeller 1 (66) is rotatably connected to the installation plate (9). An auxiliary impeller (67) is fixedly connected to the top of the impeller 1 (66), and an impeller 2 (68) is installed at the other side of the interior of the impeller 1 (66), and the impeller 2 (68) is meshedly connected to the auxiliary impeller (67), and the impeller 2 (68) is rotatably connected to the installation plate (9); The top of the auxiliary impeller (67) is fixedly connected to a lower shaft (610), the lower shaft (610) is rotatably connected to the mounting box (64), the top of the lower shaft (610) is fixedly connected to a reciprocating screw rod (612), the top of the reciprocating screw rod (612) is fixedly connected to an upper shaft (616), an adjusting sleeve (613) is sleeved on the outer side of the reciprocating screw rod (612), one side of the adjusting sleeve (613) is fixedly connected to a limiting rod (614), and a guide wheel (617) is fixedly mounted on the inner top surface of the shell cover (2); The inner top surface of the shell cover (2) is symmetrically connected to a side shaft (618) for rotation, the inner side wall of the shell cover (2) is fixedly connected to a fixing plate (619), the upper outer side of the side shaft (618) is fixedly connected to a gear (620), the inner side wall of the shell cover (2) is fixedly connected to a limit block (621), the limit block (621) is located on one side of the fixing plate (619), the limit block (621) is slidably connected to a rack (622) inside, the rack (622) is meshedly connected to the gear (620), the rack (622) is fixedly connected to a pull rope (623) on one side close to the adjustment sleeve (613), the pull rope (623) passes around the upper surface of the guide wheel (617) and is fixedly connected to the adjustment sleeve (613); A fixing block (624) is fixedly connected to one side of the top of the rack (622); a stopper (625) is fixedly connected to the inner top surface of the shell cover (2); the stopper (625) is located on one side of the guide wheel (617); and a spring (626) is fixedly installed between the fixing block (624) and the stopper (625); The heat dissipation assembly (7) comprises a main pulley (71) and a belt portion (72); the main pulley (71) is fixedly connected to the outer side of the upper shaft (616); and the belt portion (72) is adaptively connected to the main pulley (71).

2. An overload protection device for hydrogen fuel cell power generation according to claim 1, characterized in that: Two groups of the diverter plates (63) are provided, each group of the diverter plates (63) comprises two symmetrically arranged diverter plates (63), and two adjacent diverter plates (63) are arranged in an inverted figure eight shape.

3. The overload protection device for hydrogen fuel cell power generation according to claim 1, characterized in that: The impeller 1 (66) is rotatably connected to the left groove, the impeller 2 (68) is rotatably connected to the right groove (69), a protective box (65) is fixedly connected to the upper part of one side of the installation box (64), and the auxiliary impeller (67) is located on one side of the protective box (65).

4. The overload protection device for hydrogen fuel cell power generation according to claim 1, characterized in that: The lower outer side of the reciprocating screw rod (612) is fixedly connected to a lower disc body (611), the upper outer side of the reciprocating screw rod (612) is fixedly connected to an upper disc body (615), and the adjustment sleeve (613) is located between the lower disc body (611) and the upper disc body (615).

5. The overload protection device for hydrogen fuel cell power generation according to claim 1, characterized in that: The limiting rod (614) is L-shaped, the limiting rod (614) is slidably connected to the shell cover (2), and the adjusting sleeve (613) is threadedly connected to the reciprocating screw rod (612).

6. The overload protection device for hydrogen fuel cell power generation according to claim 1, characterized in that: The side shaft (618) is rotatably connected to the fixed plate (619), and a stirring rod is fixedly connected to the bottom of the side shaft (618).

7. The overload protection device for hydrogen fuel cell power generation according to claim 1, characterized in that: The two ends of the spring (626) are fixedly connected to the fixing block (624) and the stopper (625) respectively, and the spring (626) is located above the pull rope (623).

8. The overload protection device for hydrogen fuel cell power generation according to claim 1, characterized in that: The top of the oil tank part (3) is fixedly connected to a mounting frame (73), the top of the mounting frame (73) is rotatably connected to a rotating shaft (74), the upper outer side of the rotating shaft (74) is fixedly connected to a secondary pulley (75), and the secondary pulley (75) is adaptably connected to the belt part (72).

9. An overload protection device for hydrogen fuel cell power generation according to claim 8, characterized in that: The bottom end of the rotating shaft (74) passes through the mounting frame (73) and is fixedly connected to a fan blade (76). Two rotating shafts (74) are symmetrically arranged. The number of the rotating shafts (74) is the same as that of the upper shaft (616) and they correspond one to one. The two secondary pulleys (75) are arranged in an upper and lower separation.

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