Automatic electrostatic alarm device of hydrogen adding machine

Abstract

The utility model belongs to the field of hydrogen filling machines, and particularly relates to automatic static alarm equipment of a hydrogen filling machine, which comprises a hydrogen filling gun, a connecting pipe is fixedly mounted at the front end of the hydrogen filling gun, a static elimination component is arranged at the top end of the hydrogen filling gun, and a blocking component is arranged in the static elimination component. The electrostatic field on the surface of the hydrogen filling gun is detected through the electrostatic sensor, then static electricity on the surface of the hydrogen filling gun is neutralized through the static eliminator, and the static electricity on the surface of the hydrogen filling gun is prevented from igniting hydrogen which is sprayed out of the connecting pipe and possibly escaped, so that the safety during hydrogen filling is improved; and after the electrostatic sensor detects that static electricity is generated in the electrostatic field, the ball valve is synchronously driven to rotate, the ball valve rotates and blocks the interior of the hydrogen filling gun at the moment, hydrogen in the hydrogen filling gun does not continue to flow at the moment, then the risk that follow-up hydrogen escapes at the joint of the connecting pipe and the inflation device is avoided, and the safety is further improved.

Description

Technical Field

[0001] The utility model relates to the field of hydrogenation machines, in particular to automatic static electricity alarm equipment for hydrogenation machines. Background Art

[0002] A hydrogen refueling machine is an appliance that can be used to add compressed hydrogen to hydrogen fuel cells or hydrogen fuel engines. However, since hydrogen is highly flammable and explosive, and is easily affected by static electricity and can trigger an explosion, it is necessary to pay attention to safety issues at all times during the hydrogen filling process to avoid safety hazards caused by sparks generated by static electricity.

[0003] At present, in the process of filling hydrogen, static electricity is usually eliminated by using an eliminator after the static electricity is detected. However, the hydrogen is still being filled at this time. Although the eliminator reduces the generation of static electricity, the filling of hydrogen may still have safety hazards due to untimely and thorough elimination of static electricity. Therefore, an automatic static electricity alarm device for a hydrogen filling machine is proposed to address the above problem. Utility Model Content

[0004] In order to make up for the deficiencies of the prior art and avoid potential safety hazards, the utility model proposes an automatic static electricity alarm device for a hydrogenation machine.

[0005] The technical solution adopted by the utility model to solve the technical problem is: an automatic static alarm device for a hydrogen filling machine, comprising a hydrogen filling gun; a connecting pipe is fixedly installed at the front end of the hydrogen filling gun, a static elimination component is arranged at the top end of the hydrogen filling gun, and a blocking component is arranged inside the static elimination component;

[0006] The static elimination component includes a protective cover fixedly installed on the top of the hydrogen filling gun, an electrostatic sensor is fixedly installed on the top wall of the protective cover, an eliminator is fixedly installed on the top wall of the protective cover, and a hollow tube is fixedly installed on the top of the hydrogen filling gun.

[0007] Preferably, a front groove and a rear groove are provided inside the protective cover, and the electrostatic sensor and the eliminator are fixedly mounted on the top wall of the front groove. The electrostatic sensor and the eliminator are electrically connected, and when the electrostatic sensor detects a change in the electrostatic field on the surface of the hydrogen filling gun, the eliminator is activated to neutralize the static electricity on the surface of the eliminator.

[0008] Preferably, the hollow tube passes through the top wall of the hydrogen filling gun and extends to the inside of the front groove, and the hollow tube is located directly below the electrostatic sensor.

[0009] Preferably, the blocking assembly includes a sliding rod fixedly installed inside the protective cover, a rack is fixedly installed at the rear end of the sliding rod, a support rod is fixedly installed at the rear end of the inner wall of the protective cover, a buffer spring is fixedly installed at the front end of the support rod, a fixed column is fixedly installed in the middle part of the inside of the protective cover, a magnetic block is fixedly installed at the rear end of the bottom of the fixed column, a top groove is provided at the top end of the sliding rod, an electromagnet is provided on the rear side of the top groove, a ball valve is rotatably connected inside the hydrogen filling gun, and a gear is fixedly installed on the top of the ball valve.

[0010] Preferably, a sliding groove is provided inside the rack, the front end of the support rod is slidably connected to the inside of the sliding groove, and the end of the buffer spring away from the support rod is fixedly installed on the inner wall of the sliding groove. The rack always slides on the surface of the support rod when moving. At this time, the sliding trajectory of the rack is along the length direction of the support rod, which increases the stability of the rack when moving.

[0011] Preferably, the electromagnet is electrically connected to the electrostatic sensor, and the adjacent ends of the electromagnet and the magnetic block are opposite poles. When the electrostatic sensor detects static electricity generated in the electrostatic field, the electromagnet inside the sliding rod will be energized. At this time, the electromagnet will drive the rack to move under the attraction of the magnetic block.

[0012] Preferably, the top of the ball valve extends through the top of the hydrogen filling gun to the inside of the protective cover, and the rack is meshed with the gear. The length of the rack is one-fourth the circumference of the gear. When the rack is driven to move, it will push the meshed gear to rotate. At this time, the gear drives the fixedly connected ball valve to rotate and block the inside of the hydrogen filling gun, so that the hydrogen inside the hydrogen filling gun is synchronously blocked and cannot flow.

[0013] The utility model is beneficial in that:

[0014] The utility model detects the electrostatic field on the surface of the hydrogen filling gun through an electrostatic sensor, and then neutralizes the static electricity on the surface of the hydrogen filling gun through an electric eliminator, thereby preventing the static electricity on the surface of the hydrogen filling gun from igniting the hydrogen that may escape from the connecting pipe, thereby improving the safety during hydrogen filling;

[0015] After the electrostatic sensor detects the static electricity generated inside the electrostatic field, it will synchronously drive the ball valve to rotate. At this time, the ball valve rotates and blocks the inside of the hydrogen filling gun. At this time, the hydrogen inside the hydrogen filling gun will not continue to flow, thereby avoiding the risk of subsequent hydrogen escaping at the connection between the connecting pipe and the charging device, further improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0019] Figure 3 It is a schematic structural diagram of the internal cross-section of the protective cover of the utility model;

[0020] Figure 4 It is a schematic cross-sectional structural diagram of the sliding rod of the utility model.

[0021] In the figure: 1. Hydrogen filling gun; 2. Connecting pipe; 3. Static elimination assembly; 31. Protective cover; 32. Static sensor; 33. Electrostatic eliminator; 34. Hollow tube; 4. Blocking assembly; 41. Sliding rod; 42. Rack; 43. Support rod; 44. Buffer spring; 45. Fixed column; 46. Magnetic block; 47. Top groove; 48. Electromagnet; 491. Ball valve; 492. Gear. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The following is combined with Figure 1-4 To further explain this application in detail,

[0024] The present application embodiment discloses an automatic static alarm device for a hydrogenation machine. Figure 1 The automatic static alarm device of the hydrogen filling machine comprises a hydrogen filling gun 1; a connecting pipe 2 is fixedly installed at the front end of the hydrogen filling gun 1, a static elimination component 3 is arranged at the top end of the hydrogen filling gun 1, and a blocking component 4 is arranged inside the static elimination component 3;

[0025] Reference Figure 2The static elimination component 3 includes a protective cover 31 fixedly installed on the top of the hydrogen filling gun 1, an electrostatic sensor 32 is fixedly installed on the top wall of the protective cover 31, an eliminator 33 is fixedly installed on the top wall of the protective cover 31, and a hollow tube 34 is fixedly installed on the top of the hydrogen filling gun 1. A front groove and a rear groove are opened inside the protective cover 31. The static sensor 32 and the eliminator 33 are both fixedly installed on the top wall of the front groove. The static sensor 32 and the eliminator 33 are electrically connected. When the static sensor 32 detects a change in the electrostatic field on the surface of the hydrogen filling gun 1, the eliminator 33 will be activated to neutralize the static electricity on the surface of the eliminator 33. The hollow tube 34 penetrates the top wall of the hydrogen filling gun 1 and extends to the inside of the front groove. The hollow tube 34 is located directly below the static sensor 32.

[0026] Reference Figure 2-Figure 4 The blocking component 4 includes a sliding rod 41 fixedly installed inside the protective cover 31, a rack 42 is fixedly installed at the rear end of the sliding rod 41, a support rod 43 is fixedly installed at the rear end of the inner wall of the protective cover 31, a buffer spring 44 is fixedly installed at the front end of the support rod 43, a slide groove is opened inside the rack 42, the front end of the support rod 43 is slidably connected to the inside of the slide groove, and the end of the buffer spring 44 away from the support rod 43 is fixedly installed on the inner wall of the slide groove. The rack 42 always slides on the surface of the support rod 43 when moving. At this time, the sliding trajectory of the rack 42 is along the length direction of the support rod 43, which increases the stability of the rack 42 when moving. A fixed column 45 is fixedly installed in the middle part of the protective cover 31, and a magnetic block 46 is fixedly installed at the rear end of the bottom of the fixed column 45. A top groove 47 is opened at the top of the sliding rod 41, and an electromagnet 48 is opened on the rear side of the top groove 47. The electromagnet 48 and the static The electric sensor 32 is electrically connected, and the adjacent ends of the electromagnet 48 and the magnetic block 46 are opposite poles. When the electrostatic sensor 32 detects that static electricity is generated in the electrostatic field, the electromagnet 48 inside the sliding rod 41 will be energized. At this time, the electromagnet 48 will drive the rack 42 to move under the attraction of the magnetic block 46. The internal rotation of the hydrogen filling gun 1 is connected to a ball valve 491, and a gear 492 is fixedly installed on the top of the ball valve 491. The top of the ball valve 491 extends through the top of the hydrogen filling gun 1 to the inside of the protective cover 31. The rack 42 and the gear 492 are meshed and connected. The length of the rack 42 is one-fourth of the circumference of the gear 492. After the rack 42 is driven to move, it will push the meshed gear 492 to rotate. At this time, the gear 492 drives the fixedly connected ball valve 491 to rotate and block the inside of the hydrogen filling gun 1, so that the hydrogen inside the hydrogen filling gun 1 is synchronously blocked and cannot flow.

[0027] Working principle: The operator connects the bottom of the rear end of the hydrogen filling gun 1 to the gas outlet of the hydrogen storage device, and connects the front end of the connecting pipe 2 to the component to be hydrogenated. At this time, the electrostatic sensor 32 is turned on to detect the electrostatic field on the surface of the hydrogen filling gun 1. If the electrostatic sensor 32 detects that the static electricity on the surface of the hydrogen filling gun 1 increases, the electrostatic sensor 32 drives the eliminator 33 and the electromagnet 48 to be energized through the PLC controller. When the electromagnet 48 is energized, it will be adsorbed by the magnetic block 46 under the action of magnetic force, and the magnetic block 46 and the fixed column 45 are fixedly installed inside the protective cover 31. Therefore, at this time, the electromagnet 48 will drive the sliding rod 41 to move toward the front end, and in this process, the bottom of the fixed column 45 It always slides inside the top groove 47, and at the same time the sliding rod 41 will drive the rack 42 to move, at which time the rack 42 drives the meshing gear 492 to rotate, and the gear 492 drives the ball valve 491 to rotate inside the hydrogen filling gun 1; when the fixed column 45 moves relative to the top groove 47 to abut against the rear end inner wall of the top groove 47, the sliding rod 41 cannot continue to move forward, and since the length of the rack 42 is one-quarter of the circumference of the rack 42, when the rack 42 moves with the sliding rod 41, it will drive the gear 492 to rotate one-quarter of a circle, and at this time the gear 492 drives the ball valve 491 to rotate and block the inside of the hydrogen filling gun 1, so that the hydrogen inside the hydrogen filling gun 1 cannot continue to flow.

[0028] At the same time, after being driven, the eliminator 33 releases electric charge to neutralize the static electricity on the surface of the hydrogen filling gun 1 to reduce the accumulation and voltage level of static electricity, thereby preventing static electricity from adhering to the surface of the hydrogen filling gun 1 and affecting the safety during hydrogen filling.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. The automatic static electricity alarm device of the hydrogenation machine is characterized by: The invention comprises a hydrogen filling gun (1); a connecting pipe (2) is fixedly mounted on the front end of the hydrogen filling gun (1); a static elimination component (3) is arranged at the top end of the hydrogen filling gun (1); and a blocking component (4) is arranged inside the static elimination component (3); The static elimination component (3) comprises a protective cover (31) fixedly mounted on the top of the hydrogen filling gun (1), a static sensor (32) fixedly mounted on the top wall of the protective cover (31), an eliminator (33) fixedly mounted on the top wall of the protective cover (31), and a hollow tube (34) fixedly mounted on the top of the hydrogen filling gun (1).

2. The automatic static electricity alarm device for the hydrogenation machine according to claim 1, characterized in that: The protective cover (31) is provided with a front groove and a rear groove inside, and the electrostatic sensor (32) and the eliminator (33) are both fixedly mounted on the top wall of the front groove, and the electrostatic sensor (32) and the eliminator (33) are electrically connected.

3. The automatic static electricity alarm device for the hydrogenation machine according to claim 2, characterized in that: The hollow tube (34) penetrates the top wall of the hydrogen filling gun (1) and extends to the inside of the front groove. The hollow tube (34) is located directly below the electrostatic sensor (32).

4. The automatic static electricity alarm device for the hydrogenation machine according to claim 1, characterized in that: The blocking assembly (4) includes a sliding rod (41) fixedly mounted inside the protective cover (31), a rack (42) fixedly mounted at the rear end of the sliding rod (41), a support rod (43) fixedly mounted at the rear end of the inner wall of the protective cover (31), a buffer spring (44) fixedly mounted at the front end of the support rod (43), a fixed column (45) fixedly mounted in the middle of the protective cover (31), a magnetic block (46) fixedly mounted at the rear end of the bottom of the fixed column (45), a top groove (47) provided at the top end of the sliding rod (41), an electromagnet (48) provided at the rear side of the top groove (47), a ball valve (491) rotatably connected inside the hydrogen filling gun (1), a gear (492) fixedly mounted at the top of the ball valve (491).

5. The automatic static electricity alarm device for the hydrogenation machine according to claim 4, characterized in that: A sliding groove is provided inside the rack (42), the front end of the support rod (43) is slidably connected inside the sliding groove, and one end of the buffer spring (44) away from the support rod (43) is fixedly mounted on the inner wall of the sliding groove.

6. The automatic static electricity alarm device for the hydrogenation machine according to claim 4, characterized in that: The electromagnet (48) and the electrostatic sensor (32) are electrically connected, and the adjacent ends of the electromagnet (48) and the magnetic block (46) are mutually different magnetic poles.

7. The automatic static electricity alarm device for a hydrogenation machine according to claim 4, characterized in that: The top end of the ball valve (491) passes through the top of the hydrogen filling gun (1) and extends to the inside of the protective cover (31). The rack (42) and the gear (492) are meshed and connected. The length of the rack (42) is one quarter of the circumference of the gear (492).

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