A ground protection device for a dispenser

Abstract

The utility model provides a kind of air compressor grounding protection device, it is related to grounding protection technical field, including insulating protective shell, the one end of insulating protective shell is movably connected with insulating sleeve shell, the inside of insulating sleeve shell is provided with the mounting connecting plate of fixed bolt, the inside fixed mounting of mounting connecting plate has fastening spring washer.The utility model has the advantages that: the insulating sleeve shell is arranged at the one end of air compressor grounding protection device and air compressor connection, and the grounding wire is protected, and the inside of insulating sleeve shell is provided with the mounting connecting plate of position adjustment, while the inside of mounting connecting plate is provided with the fastening spring washer of the installation size of adjustment, the position of mounting connecting plate and fastening spring washer can be adjusted according to the installation demand of different specifications of air compressor, the installation position and installation size of air compressor grounding protection device are adjusted, the adaptability of air compressor grounding protection device installation connection is enhanced, and the convenience of air compressor grounding protection device use is improved.

Description

Technical Field

[0001] This utility model relates to the field of grounding protection technology, and in particular to a grounding protection device for a gas dispenser. Background Technology

[0002] A CNG dispenser is a refueling device that provides compressed natural gas (CNG) to natural gas vehicles and vehicles at large CNG substations. The gas in the pipeline typically undergoes pre-purification to remove sulfur and moisture, then the compressor unit compresses the pressure from 0.1-1.0 MPa to 25 MPa before dispensing the gas to the vehicle. CNG dispensers require grounding protection during operation. The grounding protection device is a crucial component ensuring the safe operation of the dispenser. It is primarily used to quickly conduct static electricity generated during operation (such as static electricity from friction between flowing gas and induced static electricity on the equipment casing) and accidental leakage (such as a charged casing due to aging wiring) to the ground. This prevents static electricity buildup from causing gas explosions or electric shocks to operators. Grounding protection devices are widely used in gas stations, ports, and other gas refueling scenarios.

[0003] However, the interface size of existing gas dispenser grounding protection devices is usually fixed. When connecting to gas dispensers of different specifications, corresponding connectors are often required, resulting in poor compatibility and inconvenience in use. Utility Model Content

[0004] Therefore, the purpose of this utility model is to propose a gas dispenser grounding protection device to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0005] To achieve the above objectives, one embodiment of this utility model provides a gas dispenser grounding protection device, including a grounding wire connected to the gas dispenser grounding base. The grounding wire contains a grounding detection component that detects the resistance value of the grounding circuit. One end of the grounding wire is fixedly installed with a grounding electrode in direct contact with the soil via an equipotential bonding plate. An insulating protective shell is provided around the grounding electrode to support and protect it. One end of the insulating protective shell is movably connected to an adjustable insulating sleeve. An installation connecting plate with fixing bolts is provided inside the insulating sleeve. A fastening spring for adjusting the installation size is fixedly installed inside the installation connecting plate. One end of the grounding electrode is fixedly installed with a connecting sleeve post. A spool for housing the grounding wire is sleeved on the surface of the sleeve post.

[0006] Preferably, in any of the above embodiments, the grounding electrode includes a grounding block made of conductive material, a guide and protective seat made of insulating material, a positioning spring providing support, and a locking block for positioning. One end of the grounding wire is fixedly installed with the grounding block, and the end of the grounding block near the grounding wire is fixedly installed with the guide and protective seat located on one side of the grounding wire. The guide and protective seat is fixedly installed with a positioning spring inside, and one end of the positioning spring is fixedly installed with a locking block that moves inside the guide and protective seat. One end of the locking block is provided with a pull rod that passes through the positioning spring and the guide and protective seat.

[0007] The above technical solution is as follows: A grounding wire (multi-strand copper core cable) connects the gas dispenser's grounding base to the grounding electrode, forming a current-carrying channel for static electricity and leakage current. An internal grounding detection component (including a grounding resistance tester, signal transmitter, and receiver) monitors the grounding loop resistance value in real time to ensure effective grounding. The grounding electrode's grounding block is in direct contact with the soil, conducting current. A guide protective seat (made of epoxy resin) is fixed to one end of the grounding block. A protective positioning spring and a locking block are included; the positioning spring provides the locking block with reset force, and the locking block engages with the spool's locking groove to lock the spool's position. A pull rod passes through the spring and the protective seat for easy manual unlocking. The multi-strand copper core of the grounding wire has high conductivity, allowing for rapid conduction of static electricity and leakage current. Current accumulation is prevented from causing safety accidents (such as gas explosions and electric shocks). The PVC insulation layer is resistant to aging and oil stains, making it suitable for the harsh environment of gas stations. The grounding detection component automatically detects the grounding resistance. If the resistance is too high (such as a loose grounding electrode or damaged cable), it will immediately alert maintenance personnel through an audible and visual alarm, ensuring the continuous safe operation of the gas dispenser. The copper material of the grounding block has excellent conductivity, and the tin-plated layer enhances its resistance to soil corrosion, ensuring long-term grounding effect. The high insulation of the guide protection seat prevents the locking block from conducting with the grounding block, preventing leakage damage to the spring. The high elasticity of the positioning spring ensures that the locking block is tightly engaged, locking the spool. The pull rod is easy to manually pull to unlock, allowing the spool to rotate and adjust the length of the grounding wire.

[0008] Preferably, in any of the above embodiments, the insulating protective shell is fitted onto the surface of the grounding block, one end of the insulating protective shell is provided with a movable groove for receiving the insulating shell, and an insulating positioning block is fixedly installed inside the insulating protective shell above the movable groove.

[0009] Preferably, in any of the above embodiments, the insulating positioning block includes a connecting block made of elastic material and a positioning tooth block for engaging and positioning. The connecting block is fixedly installed inside the insulating protective shell, and a positioning tooth block that moves inside the insulating protective shell is fixedly installed at one end of the connecting block. A tooth groove that engages with the positioning tooth block is opened at one end of the insulating shell.

[0010] The above technical solution employs the following: an insulating protective shell (ABS plastic material) is fitted onto the surface of the grounding block to protect the grounding electrode from external impacts. An internal movable groove houses the insulating shell, allowing for telescopic adjustment. The connecting block (EPDM rubber material) of the insulating positioning block is fixed inside the protective shell. The positioning tooth block (nylon material) engages with the tooth groove of the insulating shell, locking the shell's position. The insulating protective shell's protection level can prevent rainwater and sand from entering, avoiding moisture and corrosion of the grounding block. The telescopic design of the movable groove allows the insulating shell to slide along the groove, adapting to grounding wires of different lengths. The elasticity of the connecting block allows the positioning tooth block to deform slightly as the shell slides. The mechanical engagement of the tooth block and the tooth groove locks the shell's position (preventing the shell from sliding). Simultaneously, manual pushing of the shell allows for adjustment.

[0011] Preferably, in any of the above embodiments, the mounting connection plate includes an adjusting screw that provides driving force, a protective mounting plate for connection and fixation, and a sealing gasket for sealing and protection. The adjusting screw is rotatably connected to the inside of the insulating sleeve, and the surface of the adjusting screw is threadedly connected to the protective mounting plate that moves inside the insulating sleeve. The two ends of the protective mounting plate are fixedly installed with sealing gaskets located inside the insulating sleeve.

[0012] The above technical solution is as follows: an insulating sleeve (made of ABS plastic with a guide groove for the adjusting screw on the inner wall) fits into the movable groove of the insulating protective shell. The protective grounding wire is connected to the mounting plate. The adjusting screw of the mounting plate is rotatably connected inside the sleeve, driving the protective mounting plate to move. The protective mounting plate is fixed with a fastening spring. A sealing gasket (made of EPDM rubber) adheres to the inner wall of the sleeve to achieve a seal. The IP protection of the insulating sleeve prevents the mounting plate from getting damp. The guide groove ensures smooth rotation of the adjusting screw. The high-precision thread of the adjusting screw ensures the accuracy of the movement of the protective mounting plate, which can be adapted to the mounting hole spacing of different specifications of gas dispensers. The stainless steel material of the protective mounting plate is rust-resistant (resistant to oil stains from gas stations) and can withstand the adjustment force of the fastening spring without deformation. The sealing gasket prevents dust and rainwater from entering the interior of the sleeve and protects the screw and mounting plate.

[0013] Preferably, in any of the above embodiments, the fastening spring includes an adjusting bolt that provides driving force and a mounting plate made of elastic metal material. The adjusting bolt is threaded into the interior of the protective mounting plate, and one end of the adjusting bolt is fixedly mounted with the mounting plate that moves inside the protective mounting plate.

[0014] The above technical solution employs the following: the adjusting bolt (made of stainless steel) for fastening the spring clip is threaded onto the protective mounting plate, pushing the mounting plate. The mounting plate (made of spring steel with a galvanized surface) deforms under the push of the bolt, compensating for installation size deviations and clamping the gas dispenser grounding base. The thread adjustment of the adjusting bolt can finely adjust the deformation degree of the mounting plate to match the size deviation of the gas dispenser mounting hole, avoiding loosening of the installation due to processing errors. The spring steel material of the mounting plate has high elasticity and can generate continuous clamping force, ensuring that the mounting plate and the gas dispenser fit tightly together, while avoiding damage to the gas dispenser base caused by rigid clamping. The galvanized layer enhances the corrosion resistance of the mounting plate.

[0015] Preferably, in any of the above embodiments, the sleeve is fixedly installed at one end of the grounding block, one end of the sleeve is provided with a cap for limiting the position of the spool, one end of the spool is provided with a locking groove for engaging the locking block, and the surface of the spool is provided with a take-up thread groove for receiving the grounding wire.

[0016] The above technical solution is as follows: a sleeve (made of stainless steel) is fixed to one end of the grounding block, a support spool (made of ABS plastic with a take-up thread groove on the surface) is sleeved on the sleeve, and a grounding wire storage cap (made of nylon) is threaded to the top of the sleeve. The limiting groove of the spool (preventing axial movement of the spool) cooperates with the locking block to lock the spool. The stainless steel of the sleeve is rust-resistant, and the smooth surface reduces the rotational resistance of the spool. The take-up thread groove of the spool guides the grounding wire to wind in an orderly manner, preventing the grounding wire from getting tangled. The storage length is adjustable to adapt to different installation distances. The limiting function of the cap ensures stable rotation of the spool, and the circumferential distribution of the locking groove enables multi-position locking of the spool to meet the needs of different sites.

[0017] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows: 1. An insulating sleeve is installed at the end of the gas dispenser grounding protection device connected to the gas dispenser to protect the grounding wire. An adjustable mounting plate is installed inside the insulating sleeve. At the same time, a fastening spring is installed inside the mounting plate to adjust its installation size. The position of the mounting plate and the fastening spring can be adjusted according to the installation requirements of different gas dispenser specifications, thereby adjusting the installation position and size of the gas dispenser grounding protection device, enhancing the adaptability of the gas dispenser grounding protection device installation connection, and improving the convenience of using the gas dispenser grounding protection device.

[0018] 2. An insulating protective shell and an insulating sleeve are installed to protect the grounding wire of the gas dispenser grounding protection device. The total length of the insulating protective shell and the insulating sleeve can be adjusted according to the working length of the grounding wire. At the same time, a spool is installed inside the insulating protective shell to adjust the working length of the grounding wire, which can be adapted to different working needs and improve the convenience of using the gas dispenser grounding protection device.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure according to an embodiment of the present utility model; Figure 2 This is a partial structural schematic diagram according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the structure of the connecting plate installed according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the structure of the insulating positioning block according to an embodiment of the present utility model; Figure 5 This is a cross-sectional structural diagram of the insulating protective shell according to an embodiment of the present utility model; Figure 6 This is a side sectional view of the grounding electrode according to an embodiment of the present invention; Among them: 1-grounding wire, 2-grounding electrode, 21-grounding block, 22-guide protection seat, 23-positioning spring, 24-locking block, 3-insulating protective shell, 4-insulating sleeve, 5-mounting connection plate, 51-adjusting screw, 52-protective mounting plate, 53-sealing gasket, 6-fastening spring, 61-adjusting bolt, 62-mounting piece, 7-sleeve post, 8-spool, 9-insulating positioning block, 91-connecting block, 92-positioning tooth block. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0022] like Figure 1-6 As shown in the figure, a gas dispenser grounding protection device according to an embodiment of the present invention includes a grounding wire 1 connected to the gas dispenser grounding base. The grounding wire 1 is equipped with a grounding detection component for detecting the resistance value of the grounding circuit. One end of the grounding wire 1 is fixedly installed with a grounding electrode 2 in direct contact with the soil through an equipotential bonding plate. An insulating protective shell 3 is provided around the grounding electrode 2 to support and protect it. One end of the insulating protective shell 3 is movably connected to an insulating sleeve 4 that can be extended and retracted. The insulating sleeve 4 is equipped with a mounting connection plate 5 for fixing bolts. The mounting connection plate 5 is fixedly installed with a fastening spring 6 for adjusting the installation size. One end of the grounding electrode 2 is fixedly installed with a connecting sleeve post 7. A spool 8 for storing the grounding wire 1 is sleeved on the surface of the sleeve post 7.

[0023] Preferably, in any of the above embodiments, the grounding electrode 2 includes a grounding block 21 made of conductive material, a guide and protective seat 22 made of insulating material, a positioning spring 23 providing support, and a locking block 24 for positioning. The grounding block 21 is fixedly installed at one end of the grounding wire 1. The guide and protective seat 22 located on one side of the grounding wire 1 is fixedly installed at the end of the grounding block 21 near the grounding wire 1. The positioning spring 23 is fixedly installed inside the guide and protective seat 22. The locking block 24, which moves inside the guide and protective seat 22, is fixedly installed at one end of the positioning spring 23. A pull rod that passes through the positioning spring 23 and the guide and protective seat 22 is provided at one end of the locking block 24.

[0024] The above technical solution is adopted as follows: Grounding wire 1 (multi-strand copper core cable) connects the gas dispenser grounding base and grounding electrode 2, forming a current conduction channel for static electricity and leakage current. The internal grounding detection component (including a grounding resistance tester, signal transmitter, and receiver) monitors the grounding loop resistance value in real time to ensure effective grounding. The grounding block 21 of grounding electrode 2 is in direct contact with the soil to conduct current. The guide protection seat 22 (made of epoxy resin) is fixed to one end of the grounding block. The protection positioning spring 23 and the locking block 24 are connected. The positioning spring 23 provides the reset spring force for the locking block 24. The locking block 24 is engaged in the locking groove of the spool 8 to lock the spool position. The pull rod passes through the spring and the protection seat for easy manual unlocking. The multi-strand copper core material of grounding wire 1 has high conductivity and can quickly conduct static electricity. To prevent leakage current from accumulating and causing safety accidents (such as gas explosions or electric shocks), the PVC insulation layer is resistant to aging and oil stains, making it suitable for the harsh environment of gas stations. The grounding detection component automatically detects the grounding resistance. If the resistance is too high (such as a loose grounding electrode or damaged cable), it will immediately alert maintenance personnel through an audible and visual alarm, ensuring the continuous safe operation of the gas dispenser. The copper material of the grounding block 21 has excellent conductivity, and the tin-plated layer enhances its resistance to soil corrosion, ensuring long-term grounding effectiveness. The high insulation of the guide protection seat 22 prevents the locking block 24 from conducting with the grounding block 21, preventing leakage damage to the spring. The high elasticity of the positioning spring 23 ensures that the locking block 24 is tightly engaged, locking the spool 8. The pull rod is easy to manually pull to unlock, allowing the spool to rotate and adjust the length of the grounding wire.

[0025] Grounding wire 1, based on the principle of conductor conductivity, conducts static electricity and leakage current from the gas dispenser casing through a copper core to grounding electrode 2, and then into the earth. The grounding detection component injects a low-frequency test current into the circuit via a signal transmitter, and the receiver detects the voltage drop. Using Ohm's law, it calculates the grounding resistance for real-time monitoring. Grounding block 21, through its large-area contact with the soil, disperses the current into the earth, utilizing the soil's conductivity to complete the grounding. Positioning spring 23 stores elastic force through elastic deformation, pushing locking block 24 to slide along the guide rail's groove, engaging the grounding wire. The shaft locking groove mechanically engages, restricting the rotation of the spool. To unlock, pulling the lever compresses the spring, disengaging the locking block from the locking groove, allowing the spool to rotate freely. During installation, one end of the grounding wire 1 is bolted to the gas dispenser's grounding base, and the other end is welded to the grounding block 21 of the grounding electrode 2 via an equipotential bonding plate. During gas dispenser operation, the grounding wire continuously conducts static electricity and leakage current. The grounding detection component monitors the resistance value in real time. If excessive resistance is detected, an alarm is triggered. Maintenance personnel must check for damage to the grounding wire and loosening of the grounding electrode. After repair, the resistance should be restored, and the alarm should be triggered. When the alarm stops, and grounding electrode 2 is installed, bury grounding block 21 underground, ensuring close contact with the soil. When adjusting the length of grounding wire 1, pull the lever; locking block 24 disengages from the clamping groove of spool 8. Rotate the spool to wind up and unwind the grounding wire. Once the target length is reached, release the lever; the spring returns to its original position, pushing the locking block into the corresponding clamping groove to lock the spool. During long-term use, periodically check the tin plating layer on the surface of the grounding block. If the grounding resistance increases due to soil dryness, inject a resistance-reducing agent into the grounding pit. The grounding detection component is linked to the gas dispenser's main control system; if the resistance exceeds the limit, it will not... The system not only alarms locally but also sends analog signals to the main control system to trigger the gas dispenser shutdown protection. It regularly performs withstand voltage tests on the ground wire insulation layer and manually calibrates the grounding resistance to ensure detection accuracy. The reference length of the grounding wire 1 is determined according to the size of the gas station site. The clamping grooves on the spool 8 are distributed at equal angles around the circumference to ensure length adjustment accuracy. The locking force of the locking block is tested by a tension gauge. If the tension is insufficient, the positioning spring 23 is replaced. The grounding resistance of the grounding block 21 is tested monthly by a grounding resistance tester. If the resistance exceeds the threshold, resistance reduction measures are taken.

[0026] Preferably, in any of the above schemes, the insulating protective shell 3 is fitted onto the surface of the grounding block 21, and one end of the insulating protective shell 3 is provided with a movable groove for receiving the insulating sleeve 4. Above the movable groove, an insulating positioning block 9 is fixedly installed inside the insulating protective shell 3.

[0027] Preferably, in any of the above embodiments, the insulating positioning block 9 includes a connecting block 91 made of elastic material and a positioning tooth block 92 for engaging and positioning. The connecting block 91 is fixedly installed inside the insulating protective shell 3. One end of the connecting block 91 is fixedly installed with the positioning tooth block 92 that moves inside the insulating protective shell 3. One end of the insulating sleeve 4 has a tooth groove that engages with the positioning tooth block 92.

[0028] The above technical solution is adopted as follows: the insulating protective shell 3 (ABS plastic material) is fitted onto the surface of the grounding block 21 to protect the grounding electrode from external impact. The internal movable groove houses the insulating shell 4, realizing telescopic adjustment. The connecting block 91 (EPDM rubber material) of the insulating positioning block 9 is fixed inside the protective shell. The positioning tooth block 92 (nylon material) is engaged with the tooth groove of the insulating shell 4 to lock the shell position. The IP65 protection level of the insulating protective shell 3 can block rainwater and sand from entering and prevent the grounding block 21 from getting damp and corroding. The telescopic design of the movable groove allows the insulating shell 4 to slide along the groove to adapt to grounding wires 1 of different lengths. The elasticity of the connecting block 91 allows the positioning tooth block 92 to deform slightly as the shell slides. The mechanical engagement of the tooth block and the tooth groove locks the shell position (preventing the shell from sliding). At the same time, the shell can be manually pushed to achieve adjustment.

[0029] The insulating protective shell 3 provides protection through physical barriers. The rigid structure of ABS material resists impact. The insulating positioning block 9 utilizes the elasticity of the connecting block and the mechanical engagement of the toothed block to form an adjustable locking structure. When the shell is pushed, the toothed block compresses the connecting block and deforms. The toothed block disengages from the tooth groove and slides into the next tooth groove, achieving step adjustment. After stopping the push, the connecting block resets, and the toothed block locks into the tooth groove. When installing the insulating protective shell 3, it is fitted onto the grounding block 21 and fixed with bolts. According to the extension length of the grounding wire 1, the insulating shell 4 is pushed to slide along the movable groove, and the positioning toothed block 92 automatically engages into the shell tooth groove and locks the shell. If the protection length needs to be adjusted, the shell is pulled outward, the toothed block disengages from the tooth groove, slides to the target position, and is released, and the toothed block re-engages. The protective shell is regularly checked for cracks. If cracks are found, it is replaced to ensure the protective effect. The adjustment stroke of the insulating shell 4 is limited by the limit blocks at both ends of the movable groove. The elasticity of the connecting block 91 is regularly checked. If the elasticity is insufficient, it is replaced. The fit clearance between the toothed block and the tooth groove is checked with a plug gauge. If the clearance exceeds the tolerance, the toothed block is ground.

[0030] Preferably, the mounting plate 5 includes an adjusting screw 51 that provides driving force, a protective mounting plate 52 for connection and fixation, and a sealing gasket 53 for sealing and protection. The adjusting screw 51 is rotatably connected to the inside of the insulating housing 4. The surface of the adjusting screw 51 is threadedly connected to the protective mounting plate 52 that moves inside the insulating housing 4. The two ends of the protective mounting plate 52 are fixedly mounted with sealing gaskets 53 located inside the insulating housing 4.

[0031] The above technical solution is adopted: the insulating sleeve 4 (made of ABS plastic, with a guide groove for the adjusting screw 51 on the inner wall) fits into the movable groove of the insulating protective shell 3. The protective grounding wire 1 is connected to the mounting connection plate 5. The adjusting screw 51 of the mounting connection plate 5 is rotatably connected inside the sleeve, driving the protective mounting plate 52 to move. The protective mounting plate 52 is fixed and fastened with the spring 6. The sealing gasket 53 (made of EPDM rubber) fits against the inner wall of the sleeve to achieve a seal. The IP65 protection of the insulating sleeve 4 prevents the mounting connection plate 5 from getting wet. The guide groove ensures that the adjusting screw 51 rotates smoothly. The high-precision thread of the adjusting screw 51 makes the movement accuracy of the protective mounting plate 52 accurate and can be adapted to the mounting hole spacing of different specifications of gas dispensers. The stainless steel material of the protective mounting plate 52 is rust-resistant (resistant to oil stains and corrosion in gas stations) and can bear the adjustment force of the fastening spring 6 without deformation. The sealing gasket 53 prevents dust and rainwater from entering the interior of the sleeve and protects the screw and the mounting plate.

[0032] The adjusting screw 51 converts rotational motion into linear motion through threaded transmission, thereby adjusting the mounting hole spacing. The sealing gasket 53 fills the gap between the mounting plate and the inner wall of the housing through compression deformation, forming a rigid structure of the physically sealed insulating housing 4 that supports the mounting plate and the screw, preventing deformation under stress during installation. During installation, according to the mounting hole spacing of the gas dispenser's grounding base, use a wrench to rotate the adjusting screw 51 (clockwise rotation moves the mounting plate outward, counterclockwise rotation moves it inward), causing the protective mounting plate 52 to slide along the housing guide groove until the hole on the mounting plate aligns with the gas dispenser's mounting hole. Then, the mounting plate is fixed to the gas dispenser with bolts. The sealing gasket 53 deforms under the pressure of the mounting plate, achieving a seal. If a different specification gas dispenser is used, the screw is rotated in the opposite direction to adjust the position of the mounting plate and re-fix it. The movement accuracy of the mounting plate is checked with a dial indicator. If the deviation is out of tolerance, the screw thread is re-ground. The screw is lubricated regularly (by applying lithium-based grease).

[0033] Preferably, the fastening spring 6 includes an adjusting bolt 61 that provides driving force and a mounting plate 62 made of elastic metal material. The adjusting bolt 61 is threaded into the interior of the protective mounting plate 52, and one end of the adjusting bolt 61 is fixedly mounted with the mounting plate 62 that moves inside the protective mounting plate 52.

[0034] The above technical solution is adopted as follows: The adjusting bolt 61 (stainless steel material) of the fastening spring 6 is threaded to the protective mounting plate 52, pushing the mounting plate 62. The mounting plate 62 (spring steel material, galvanized surface) deforms under the push of the bolt, compensating for the installation size deviation and clamping the gas dispenser grounding base. The thread adjustment of the adjusting bolt 61 can finely adjust the deformation degree of the mounting plate 62 to adapt to the size deviation of the gas dispenser mounting hole, avoiding installation loosening due to processing errors. The spring steel material of the mounting plate 62 has high elasticity and can generate continuous clamping force to ensure that the mounting plate and the gas dispenser fit tightly, while avoiding damage to the gas dispenser base caused by rigid clamping. The galvanized layer enhances the corrosion resistance of the mounting plate.

[0035] When adjusting bolt 61 rotates, it pushes mounting plate 62 towards the gas dispenser base through threaded transmission, bending and deforming it. The elasticity of spring steel generates clamping force, and the degree of deformation is linearly related to the clamping force. The clamping force can be precisely controlled by the number of bolt rotations. After the mounting plate is aligned with the gas dispenser, the fixing bolt is passed through the mounting holes of the mounting plate and the gas dispenser and initially tightened. Then, the adjusting bolt 61 is rotated with a screwdriver to push the mounting plate 62 to deform until the mounting plate is tightly attached to the gas dispenser base and the clamping force reaches the threshold (indirectly judged by a torque wrench). Finally, the fixing bolt is tightened. When completing the installation and disassembly, first loosen the fixing bolt, then rotate the adjusting bolt in the opposite direction to reset the mounting plate and remove the device. Determine the clamping force according to the material of the gas dispenser base (such as aluminum alloy or steel) to avoid over-tightening and damaging the base. The clamping force of the mounting plate is tested with a tension gauge. If the force value is insufficient, readjust the deformation degree of the bolt and mounting plate. If the force exceeds the limit, replace the mounting plate.

[0036] Preferably, in any of the above schemes, the sleeve 7 is fixedly installed at one end of the grounding block 21, and one end of the sleeve 7 is provided with a cap for limiting the position of the spool 8. One end of the spool 8 is provided with a locking groove for engaging the locking block 24, and the surface of the spool 8 is provided with a take-up thread groove for receiving the grounding wire 1.

[0037] The above technical solution is adopted as follows: the sleeve 7 (stainless steel) is fixed to one end of the grounding block 21, the support spool 8 (ABS plastic with a take-up thread groove on the surface) is sleeved on the sleeve, the cap for storing the grounding wire 1 (nylon) is threaded to the top of the sleeve, the locking groove for limiting the spool (preventing axial movement of the spool) cooperates with the locking block 24 to lock the spool, the stainless steel of the sleeve 7 is rust-resistant, the smooth surface reduces the rotation resistance of the spool, the take-up thread groove of the spool 8 guides the grounding wire 1 to wind in an orderly manner to avoid the grounding wire from getting tangled, the storage length is adjustable to adapt to different installation distances, the limiting effect of the cap ensures stable rotation of the spool, and the circumferential distribution of the locking groove realizes multi-position locking of the spool 8 to meet the needs of different sites.

[0038] When the spool 8 rotates around the sleeve post 7, the take-up thread groove guides the grounding wire 1 evenly to avoid overlap. The mechanical engagement of the locking groove and the locking block 24 restricts the rotation of the spool. To unlock the grounding wire length, pull the locking block lever, and the spool can rotate freely to take in and release the grounding wire. After adjusting to the target length, the locking block automatically engages the corresponding locking groove. To adjust the length of the grounding wire 1, pull the locking block 24 lever to unlock the spool 8. Rotating the spool clockwise, the grounding wire is wound and stored along the take-up thread groove. The length is shortened. Rotating the spool counterclockwise, the grounding wire is released. After the length increases to the target length, release the lever, and the locking block 24 engages the corresponding locking groove. The spool cap is threadedly connected to the top of the sleeve post to prevent the spool from coming out. Regularly clean the dust on the spool surface and check for damage to the take-up thread groove. Replace the spool if damaged. Determine the grounding wire storage length based on the actual distance between the gas dispenser and the grounding electrode.

[0039] The working principle of the gas dispenser grounding protection device of this utility model is as follows: During installation, first bury the grounding block 21 of grounding electrode 2 underground, ensuring close contact with the soil. One end of grounding wire 1 is fixed to the grounding base of the gas dispenser with bolts, and the other end is welded to grounding block 21 through an equipotential bonding plate to form a grounding circuit. Pull the locking block 24 of grounding electrode 2 to pull the rod, compress the positioning spring 23, unlock the spool 8 on the sleeve 7, rotate the spool to extend or retract the grounding wire 1 to the length appropriate for the distance between the gas dispenser and the grounding electrode, release the rod, the positioning spring resets, pushes the locking block into the spool locking groove, and locks the spool. Then, according to the spacing of the mounting holes of the gas dispenser grounding base, rotate the adjusting screw 51 inside the insulating sleeve 4 to drive the protective mounting plate 52 to slide along the guide groove of the sleeve, so that the mounting plate hole is aligned with the gas dispenser mounting base. The mounting holes are aligned, and the sealing gasket 53 moves and deforms with the mounting plate to achieve internal sealing of the housing. Then, the adjusting bolt 61 on the mounting plate is rotated to protect the housing. This pushes the mounting piece 62 of the fastening spring 6 to deform, fit against the gas dispenser base, and generate clamping force. Finally, the mounting plate is fixed with bolts. During use, the grounding wire 1 conducts static electricity and leakage current from the gas dispenser to the grounding block 21, and then introduces it into the earth grounding detection component to monitor the grounding resistance in real time. When the threshold is exceeded, an alarm is triggered and the gas dispenser is stopped. If the protection range needs to be adjusted, the insulating housing 4 is pushed to slide along the movable groove of the insulating protective housing 3. The positioning teeth 92 of the insulating positioning block 9 slides with the housing and locks into the corresponding tooth groove, locking the housing position. All structures work together to achieve grounding protection and installation adaptation.

[0040] Compared with the prior art, the present invention has the following advantages: 1. An insulating sleeve 4 is installed at one end of the gas dispenser grounding protection device connected to the gas dispenser to protect the grounding wire 1. An adjustable mounting connection plate 5 is installed inside the insulating sleeve 4. At the same time, a fastening spring 6 is installed inside the mounting connection plate 5 to adjust its installation size. The position of the mounting connection plate 5 and the fastening spring 6 can be adjusted according to the installation requirements of different gas dispenser specifications, thereby adjusting the installation position and installation size of the gas dispenser grounding protection device, enhancing the adaptability of the gas dispenser grounding protection device installation connection, and improving the convenience of using the gas dispenser grounding protection device.

[0041] 2. An insulating protective shell 3 and an insulating sleeve 4 are installed to protect the grounding wire 1 of the gas dispenser grounding protection device. The total length of the insulating protective shell 3 and the insulating sleeve 4 can be adjusted according to the working length of the grounding wire 1. At the same time, a spool 8 is installed inside the insulating protective shell 3 to adjust the working length of the grounding wire 1, so as to adapt to different working requirements and improve the convenience of using the gas dispenser grounding protection device.

Claims

1. A gas dispenser grounding protection device, comprising a grounding wire (1) connected to the gas dispenser grounding base, wherein one end of the grounding wire (1) is fixedly installed with a grounding electrode (2) in direct contact with the soil via an equipotential bonding plate, characterized in that: The grounding electrode (2) is surrounded by an insulating protective shell (3) for support and protection. One end of the insulating protective shell (3) is movably connected to an insulating sleeve (4) that can be telescopically adjusted. The insulating sleeve (4) is provided with a mounting connection plate (5) for fixing bolts. The mounting connection plate (5) is fixedly installed with a fastening spring (6) for adjusting the installation size. One end of the grounding electrode (2) is fixedly installed with a connecting sleeve (7). The surface of the sleeve (7) is fitted with a spool (8) for storing the grounding wire (1).

2. The gas dispenser grounding protection device as described in claim 1, characterized in that: The grounding electrode (2) includes a grounding block (21) made of conductive material, a guide protection seat (22) made of insulating material, a positioning spring (23) that provides support force, and a locking block (24) for positioning. The grounding block (21) is fixedly installed at one end of the grounding wire (1). The guide protection seat (22) located on one side of the grounding wire (1) is fixedly installed at the end of the grounding block (21) near the grounding wire (1). The positioning spring (23) is fixedly installed inside the guide protection seat (22). The locking block (24) that moves inside the guide protection seat (22) is fixedly installed at one end of the positioning spring (23). A pull rod that passes through the positioning spring (23) and the guide protection seat (22) is provided at one end of the locking block (24).

3. The gas dispenser grounding protection device as described in claim 2, characterized in that: The insulating protective shell (3) is fitted onto the surface of the grounding block (21). One end of the insulating protective shell (3) is provided with a movable groove for receiving the insulating sleeve (4). An insulating positioning block (9) is fixedly installed inside the insulating protective shell (3) above the movable groove.

4. The gas dispenser grounding protection device as described in claim 3, characterized in that: The insulating positioning block (9) includes a connecting block (91) made of elastic material and a positioning tooth block (92) for engaging and positioning. The connecting block (91) is fixedly installed inside the insulating protective shell (3). One end of the connecting block (91) is fixedly installed with a positioning tooth block (92) that moves inside the insulating protective shell (3). One end of the insulating sleeve (4) has a tooth groove that engages with the positioning tooth block (92).

5. A gas dispenser grounding protection device as described in claim 4, characterized in that: The mounting connection plate (5) includes an adjusting screw (51) that provides driving force, a protective mounting plate (52) for connection and fixation, and a sealing gasket (53) for sealing and protection. The adjusting screw (51) is rotatably connected to the inside of the insulating sleeve (4). The surface of the adjusting screw (51) is threadedly connected to the protective mounting plate (52) that moves inside the insulating sleeve (4). The two ends of the protective mounting plate (52) are fixedly installed with sealing gaskets (53) located inside the insulating sleeve (4).

6. A gas dispenser grounding protection device as described in claim 5, characterized in that: The fastening spring (6) includes an adjusting bolt (61) that provides driving force and a mounting plate (62) made of elastic metal material. The adjusting bolt (61) is threaded into the interior of the protective mounting plate (52), and one end of the adjusting bolt (61) is fixedly mounted with the mounting plate (62) that moves inside the protective mounting plate (52).

7. A gas dispenser grounding protection device as described in claim 6, characterized in that: The sleeve (7) is fixedly installed at one end of the grounding block (21). One end of the sleeve (7) is provided with a cap for limiting the spool (8). One end of the spool (8) is provided with a locking groove for engaging the locking block (24). The surface of the spool (8) is provided with a take-up thread groove for receiving the grounding wire (1).

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