CN216950654U

CN216950654U - Magnetic transmission explosion-proof pipeline generator

Info

Publication number: CN216950654U
Application number: CN202122115629.9U
Authority: CN
Inventors: 彭臣
Original assignee: Individual
Current assignee: Zhenjiang Lianhe Technology Research And Development Co ltd
Priority date: 2021-09-02
Filing date: 2021-09-02
Publication date: 2022-07-12
Anticipated expiration: 2031-09-02

Abstract

The utility model discloses a magnetic transmission explosion-proof pipeline generator. The impeller cavity shell is provided with a sealing housing used for isolating the impeller power component from the generator, and further comprises a driving magnetic transmission device which is matched with the impeller power component and is right opposite to the sealing housing, a driven magnetic transmission device is arranged on a motor shaft of the generator, the impeller power component is pushed to act through the fluid, and then the generator is enabled to generate electricity through magnetic transmission between the driving magnetic transmission device and the driven magnetic transmission device. By adopting the structure, multiple isolation sealing is realized, the explosion-proof performance is greatly improved, the explosion-proof requirement is met, the structure is simple and safe, the efficiency of power transmission is ensured, and the safety of power output is improved.

Description

Magnetic transmission explosion-proof pipeline generator

Technical Field

The utility model relates to a pipeline generator, in particular to a magnetic transmission explosion-proof pipeline generator, and belongs to the technical field of power generation equipment.

Background

The generator is a mechanical device for converting other forms of energy into electric energy, in the prior art, the types of generators are various according to different application occasions, and the pipeline generator is a new technology invented by being specially applied to power generation when fluid in a pipeline flows due to pressure difference, at present, the types of the existing pipeline generators are also gradually diversified, the conventional pipeline generators comprise a waist wheel pipeline generator, a three-impeller pipeline generator and the like, however, the pipeline generator must have better explosion-proof performance due to the particularity of the application occasions, although the explosion-proof performance of the existing various pipeline generators is considered, the conventional pipeline generators mostly adopt a structural form that the kinetic energy generated in the pipeline is connected with the generator through a rotor shaft and a rotary sealing mode of an impeller, the leakage problem is easy to generate, so that the method is not suitable for flammable and explosive places with high safety factor requirements.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a magnetic transmission explosion-proof pipeline generator which has the advantages of ingenious structural design, high explosion-proof performance, small rotation resistance and capability of ensuring the generating efficiency.

In order to solve the technical problem, the magnetic transmission explosion-proof pipeline generator comprises an impeller cavity shell with a fluid inlet and a fluid outlet, an impeller power assembly arranged in the impeller cavity shell and capable of being pushed to rotate by fluid, and a generator capable of generating electricity outwards, wherein a sealing cover shell used for isolating the impeller power assembly from the generator is further arranged on the impeller cavity shell, the magnetic transmission generator further comprises a driving magnetic transmission device which is installed in a manner of being matched with the impeller power assembly and is opposite to the sealing cover shell, a driven magnetic transmission device is arranged on a motor shaft of the generator, the impeller power assembly is pushed to act through the fluid, and then the generator is enabled to generate electricity through magnetic transmission between the driving magnetic transmission device and the driven magnetic transmission device.

The impeller cavity shell is fixedly provided with a shell perpendicular to the fluid inlet and outlet direction, the sealing cover shell is positioned in the shell, and the generator is arranged in the shell and enables a driven magnetic transmission device on a motor shaft of the generator to be opposite to the sealing cover shell.

The explosion-proof power generation device is characterized in that a sealed wiring structure is arranged on the shell, an explosion-proof junction box packaged outside the sealed wiring structure is fixedly mounted on the shell, an explosion-proof connector is arranged on the explosion-proof junction box, and a wire outlet end of the power generator passes through the explosion-proof junction box after passing through the sealed wiring structure and is connected with external equipment through the explosion-proof connector.

The sealing wiring structure consists of an isolation terminal groove and an isolation terminal arranged in the isolation terminal groove; and the outlet end of the generator is connected with the isolation terminal through a power line, and then the isolation terminal is connected with the external equipment through the power line and the explosion-proof joint.

Keep apart the terminal and include the mounting groove and the terminal of sealed installation in the insulating bath that set up on insulation board, the insulation board still is provided with and is located the peripheral sealed annular of mounting groove, terminal seal installation is in the insulating bath and packs sealing material in sealed annular.

The impeller power assembly comprises a pair of impeller shafts, two mutually meshed waist wheels arranged on the impeller shafts and a pair of flange seats used as supports; the two pulleys are arranged behind the pair of impeller shafts and supported and arranged through the pair of flange seats, and a pair of synchronous gear sets which are positioned on the outer side of one of the flange seats and are in transmission fit with each other are arranged on the pair of impeller shafts; one of the impeller shafts is also provided with a power output part positioned at the outer side of the other flange seat, the flange seat is provided with a power transmission part matched with the power output part through a rotating shaft, the power output part and the power transmission part form a transmission mechanism, and the driving magnetic transmission device is fixedly arranged on the rotating shaft and can synchronously rotate with the transmission mechanism.

Two all be provided with the step hole on the flange seat, each all install the bearing that is used for supporting the impeller shaft in the step hole, two all install the copper sheathing that is located the waist wheel outside end on the impeller shaft, two the copper sheathing of impeller shaft can be positioned each the step is downthehole and lean on to press on corresponding support bearing's medial surface, two still install on the flange seat and be located outside the step hole and can press gland on the support bearing.

And a sealing oil cover used for packaging the synchronous gear set is fixedly arranged on the flange seat where the synchronous gear set is positioned, and an oil disturbing reed is arranged on the synchronous gear set.

The impeller cavity shell is also fixedly provided with end covers positioned at the opposite sides of the shell, and sealing structures are arranged between the impeller cavity shell and the flange seat, between the impeller cavity shell and the shell and between the impeller cavity shell and the end covers.

The rotating shaft is provided with a rotating shaft bearing, the flange seat corresponding to the transmission mechanism is provided with a support with a placing groove, and the rotating shaft bearing is placed in the placing groove of the support.

The power output part is a transmission gear, the power output part is a meshing gear meshed with the transmission gear, and the driving magnetic transmission device is fixedly installed on the rotating shaft and can synchronously rotate with the meshing gear.

The power output part is a driving magnetic wheel, the power output part is a driven magnetic wheel matched with the driving magnetic wheel, and the driving magnetic transmission device is fixedly arranged on the rotating shaft and can synchronously rotate with the driven magnetic wheel.

The utility model has the advantages that:

(1) the magnetic transmission mode is skillfully adopted to enable the generator to generate electricity, and meanwhile, the impeller power assembly and the generator can be completely isolated by adopting the sealing housing, so that the whole structure is simple, the installation is convenient, and the fluid leakage in the pipeline is isolated by utilizing the sealing housing as a sealing structure layer.

(2) The sealed wiring end is arranged at the outer side end of the shell, the explosion-proof enclosure is arranged, and the explosion-proof joint is arranged at the outer side end of the explosion-proof enclosure, so that triple isolation and sealing are realized, the explosion-proof performance is greatly improved, the explosion-proof requirement is met, and the structure safety performance is very reliable.

(3) The isolation terminal with the special structure is arranged in the isolation terminal groove, the terminal of the isolation terminal is installed in the installation groove of the insulation board in a sealing mode to achieve preliminary sealing, meanwhile, the insulation board is provided with the sealing ring groove located on the periphery of the installation groove, the insulation sealing installation of the terminal is achieved through the sealing material, the sealing performance is further improved, and the explosion-proof performance is enabled to be more superior.

(4) The bracket with the placing groove is installed on the flange seat where the meshing gear is located, and the rotating shaft bearing on the rotating shaft is used for supporting and installing, so that the rotating stability of the driving magnet is guaranteed, and the electric energy transmission effect is further improved.

(5) The main parts of the impeller power assembly are the double-waist wheels which are meshed with each other, the fit clearance is small, the performance is stable, the transmission part adopts magnetic transmission, the friction resistance and the noise of the gear are reduced, an oil lubrication structure is not required to be considered, the safety performance is higher, and the service life is longer.

Drawings

FIG. 1 is an exploded schematic view of a magnetic drive explosion-proof pipeline generator according to the present invention;

FIG. 2 is a side view of the wheel housing of the present invention;

FIG. 3 is a schematic structural view of the impeller in a fitted state according to the present invention;

FIG. 4 is a schematic perspective view of the sealing case of the present invention;

FIG. 5 is a schematic perspective view of the stent of the present invention;

FIG. 6 is a perspective view of the flange seat of the present invention;

fig. 7 is a schematic cross-sectional view of an isolated terminal according to the present invention.

Detailed Description

The magnetic transmission explosion-proof pipeline generator of the utility model is further explained in detail by combining the attached drawings and the detailed description.

The first embodiment is as follows:

the magnetic transmission explosion-proof pipeline generator of the embodiment can be applied to gas pipeline airflow power generation, and can be extended and applied to pipelines such as oil pipelines, chemical engineering infusion pipelines, steam delivery and heat supply pipelines, tap water and the like, the embodiment takes the application of gas pipelines as an example for illustration, as shown in the figure, the generator comprises an impeller cavity shell 1 with a fluid inlet and a fluid outlet, an impeller power component 2 which is arranged in the impeller cavity shell 1 and can be pushed to rotate by airflow, and a generator 3 which can generate electricity outwards, an end cover 27 which is perpendicular to the air flow inlet and outlet direction is fixedly arranged on the impeller cavity shell 1, a sealing cover 5 which is used for isolating the impeller power component from the generator is also arranged on the impeller cavity shell 1, a driving magnetic transmission device 6 which is opposite to the center of the sealing cover 5 and extends into the sealing cover is arranged on the impeller power component 2, a driven magnetic transmission device 7 which is arranged outside the sealing cover is arranged at the motor shaft end of the generator 3, the driven magnetic transmission device 7 corresponds to the driving magnetic transmission device 6 in position, and through a sealing housing (made of nonmagnetic material) arranged between the driving magnetic transmission device 6 and the driven magnetic transmission device 7, when the fluid in the pipeline drives the impeller power component 2 to rotate, the power is transmitted to the driving magnetic transmission device 6, so that the magnetic force of the driving magnetic transmission device 6 penetrates through the sealing housing to drive the driven magnetic transmission device 7 connected with the end part of the generator shaft to synchronously rotate, therefore, the generator synchronously rotates through the magnetic transmission between the driving magnetic transmission device 6 and the driven magnetic transmission device 7 to generate electricity, and the purpose of generating electricity by utilizing the magnetic transmission to enable the generator to generate electricity is realized.

Example two:

the magnetic transmission explosion-proof pipeline generator of the embodiment is added with a housing on the basis of the first embodiment, namely, another seal is added to improve the explosion-proof effect, as shown in the figure, the housing 4 is fixedly installed on the impeller cavity housing and is perpendicular to the air flow in and out direction, namely: assuming that the fluid inlet and the fluid outlet are defined as the front-back direction of the kidney chamber housing 1, the housing 4 should be installed on the left side or the right side of the impeller chamber housing 1, in this embodiment, the housing 4 is installed on the right side of the impeller chamber housing 1 (the position shown above fig. 1 is defined as the right side), the end cover 27 is installed on the left side of the impeller chamber housing 1 (the position shown below fig. 1 is defined as the left side), the sealing cover 5 is located inside the housing 4, the generator 3 is installed inside the housing 4 and has the driven magnetic transmission device 7 on the motor shaft thereof facing the sealing cover 5, corresponding to the driving magnetic transmission device 6, and the explosion-proof performance is further improved by the added housing.

Example three:

the present embodiment is optimized based on the product structure of the first embodiment or the second embodiment, as shown in fig. 1, the impeller power assembly 2 in the present embodiment includes a pair of impeller shafts 16 (in the present embodiment, a left impeller shaft in the direction shown in fig. 1 is defined as an upper impeller shaft, and a right impeller shaft is defined as a lower impeller shaft), two engaging waists 17 respectively mounted on the upper impeller shaft and the lower impeller shaft, and a pair of flange seats 18 for supporting; the upper impeller shaft is provided with a waist wheel defined as an upper waist wheel, the lower impeller shaft is provided with a waist wheel defined as a lower waist wheel, the upper waist wheel and the lower waist wheel form a double waist wheel (the shape of which is shown in figure 3) and are supported and installed on the impeller shafts 16 through the flange seats 18, the lower flange seat 18 in the direction shown in figure 1 is defined as a left flange seat, the upper flange seat is defined as a right flange seat, the upper impeller shaft and the lower impeller shaft are respectively provided with a synchronous gear which can be mutually matched in a transmission manner to form a synchronous gear group 19, as can be seen from the figure, the synchronous gear group 19 is positioned at the outer side of the left flange seat, the rotation consistency of the two impeller shafts can be ensured through the designed synchronous gear group 19, so that the use stability is improved, one impeller shaft 16 is also provided with a power output part positioned at the outer side of the right flange seat, and the right flange seat is provided with a power transmission part matched with the power output part through a rotating shaft, the power output part and the power transmission part form a transmission mechanism, the active magnetic transmission device 6 is fixedly arranged on the rotating shaft and can synchronously rotate with the transmission mechanism, in the embodiment, a transmission gear 20 positioned on the outer side of a right flange seat is also arranged on an upper impeller shaft or a lower impeller shaft, a central bearing groove is arranged in the middle of the right flange seat, the rotating shaft with the active magnetic transmission device 6 is arranged in the middle of the right flange seat through a central bearing arranged in the central bearing groove, a meshing gear 21 meshed with the transmission gear is fixedly arranged on the rotating shaft, therefore, the transmission gear drives the meshing gear 21 to rotate to enable the active magnetic transmission device 6 to rotate, the impeller power assembly 2 is respectively arranged on the left side and the right side of the impeller cavity shell 1 through a left flange seat and a right flange seat, a connecting flange is arranged at the opening end of the sealing cover 5, and the connecting flange at the opening end of the sealing cover 5 is connected with the right flange seat through a bolt, therefore, the fluid in the pipeline is isolated from the outside, and the sealing and explosion-proof functions are realized.

Certainly, sealing structures are arranged between the left flange seat of the impeller power assembly 2 and the left side of the impeller cavity shell 1, between the right flange seat of the impeller power assembly 2 and the right side of the impeller cavity shell 1, between the impeller cavity shell 1 and the casing 4, and between the impeller cavity shell 1 and the end cover 27, in this embodiment, special-shaped sealing grooves are arranged on the end faces of the left side and the right side of the impeller cavity shell 1, so that the left flange seat of the impeller power assembly 2 can be installed on the left side of the impeller cavity shell 1 after sealing rings are arranged in the special-shaped sealing grooves, the right flange seat of the impeller power assembly 2 is installed on the right side of the impeller cavity shell 1, and the sealing rings are pressed between the impeller cavity shell 1 and the casing 4 and between the impeller cavity shell 1 and the end cover 27 for secondary sealing (as shown in fig. 2).

In addition, as a preferred scheme, the transmission gear 20 and the meshing gear 21 can realize speed change by a speed change gear set formed by a large gear and a small gear meshed with the large gear, so that power generated by rotation of the waist wheel 17 is transmitted to the large gear through one of the impeller shafts, the large gear is transmitted to the small gear in parallel, the purpose of speed change (the large gear and the small gear can be mutually changed and exchanged for realizing speed increase or speed reduction) is achieved, and the power is transmitted to the generator by the driving magnetic transmission device 6 after speed change, so that the purpose of adjusting the rotating speed of the generator is achieved.

Example four:

this embodiment is an extension of the transmission mechanism in the third embodiment, that is: the power output part is a driving magnetic wheel, the power output part is a driven magnetic wheel matched with the driving magnetic wheel, and the driving magnetic wheel and the driven magnetic wheel are purchased by manufacturers and have the product models as follows: the model number produced by Guangdong Hui Square precision magnetic materials GmbH is: the parallel transmission magnetic wheel of HSF03-D3-P12-D10A, the driving magnetic transmission device 6 is fixedly installed on the rotating shaft and can rotate synchronously with the driven magnetic wheel, certainly can also design the power output part as a driving sheave, the power transmission part as a driven sheave, and meanwhile, a belt or chain is installed between the driving sheave and the driven sheave to form a transmission assembly, which does not affect the realization of the purpose of the utility model.

In addition, the present embodiment is an extension of the transmission mechanism in the third embodiment: namely: the impeller power component can select a single-shaft impeller or a double-shaft synchronous impeller according to different application occasions; it should be noted that: the single-shaft impeller shaft is arranged in the impeller cavity, one end of the single-shaft impeller shaft is supported by the left flange seat, the other end of the single-shaft impeller shaft penetrates through the right flange seat to be connected with the driving magnetic transmission device, and other structures of the single-shaft impeller shaft are the same as those of the single-shaft impeller shaft in the embodiment.

Example five:

in this embodiment, on the basis of any one of the above embodiments, structural optimization is further performed, specifically, a generator mounting seat is disposed in the housing 4, the generator is mounted in the housing 4 through the generator mounting seat, a sealed wiring structure is disposed on a right end face (the upper side in fig. 1 is defined as the right side by using the direction shown in fig. 1 as well) of the housing 4, an explosion-proof enclosure 9 (a sealing ring is disposed between the housing 4 and the explosion-proof enclosure 9 for enhancing the sealing performance) is further fixedly mounted on the housing 4, an explosion-proof connector 10 is disposed on the explosion-proof enclosure 9, the sealed wiring structure is a sealed wire outgoing manner that isolates the housing 4 from the outside, and in this embodiment, the sealed wiring structure is composed of an isolation terminal groove 15 and an isolation terminal 8 disposed in the isolation terminal groove 15; the outlet end of the generator 3 is connected with an isolation terminal 8 through a power line, and then the isolation terminal 8 is connected with an explosion-proof joint 10 through the power line and then connected with external equipment, the specific structure of the isolation terminal 8 is shown in fig. 7, which comprises an insulation board 11, an insulation groove 12 arranged on the insulation board and a binding post 13 hermetically arranged in the insulation groove, wherein, an internal thread is arranged in the insulation groove, an external thread is arranged on the binding post 13, thus the binding post 13 is glued and then screwed with the internal thread of the insulation groove through the external thread to form a sealed installation structure, meanwhile, a sealing ring groove 14 positioned at the periphery of the insulation groove is also respectively arranged on the left and right end surfaces (the upper part is defined as the right side in fig. 1, the lower part is defined as the left side in fig. 1) of the insulation board 11, the binding post 13 is hermetically arranged in the insulation groove and is filled with sealing material (either sealing ring or sealant), the leading-out terminal of generator 3 passes through power supply line and is connected with the inboard one end of the terminal of isolation terminal 8, the outside one end of the terminal of recycling isolation terminal 8 is connected with external equipment after passing through power supply line and explosion-proof joint 10, from this through install the explosion-proof housing 9 after isolation terminal 8 at the outside end of shell 4, keep apart the leading-out terminal of generator 3 with the outside, the explosion-proof joint 10 of utilizing the outside installation of explosion-proof housing 9 to form three-layer seal explosion-proof structure simultaneously realizes insulating seal, flame proof performance is safer, accord with the flame proof condition, reach explosion-proof requirement.

Through this structural design, with terminal seal installation on the insulation board, the terminal passes the insulation board, it is sealed through the sealing material that binding post both sides all were equipped with, set up the external screw thread simultaneously in the exposed part of terminal equally, can utilize the nut to compress tightly the sealing washer when sealing material is the sealing washer, make the sealing washer and the insulation board of terminal both sides close sealedly, the sealed mounting structure of its terminal and insulating bath makes the interpore of terminal sealed simultaneously, the insulation board both sides are kept apart, realize that power output is electrically conductive promptly and sealed the isolation again.

Example six:

the embodiment is further improved on the basis of any one of the above embodiments, specifically, as shown in fig. 6, step holes 22 are respectively formed in two flange seats, a supporting bearing for supporting an impeller shaft is installed in each step hole, copper sleeves 23 located at the outer end portions of the pulleys 17 are installed on the two impeller shafts 16, the copper sleeves of the two impeller shafts 16 can be positioned in each step hole and pressed against the inner end faces of the corresponding supporting bearings, meanwhile, the two impeller shafts 16 extend into the supporting bearings and are supported and installed through the supporting bearings, adjusting glands 24 located outside the step holes 22 are also installed on the two flange seats, and flanges capable of being pressed into the step holes 22 are arranged on the adjusting glands 24, so that the positions of the pulleys can be finely adjusted while the supporting bearings are pressed by the adjusting glands, and the gap between the pulleys and the flange seats can be effectively ensured through the designed matching structures of the copper sleeves and the adjusting glands, avoid frictional resistance, make the waist wheel rotate more nimble reliable.

On the basis of the structure, further, a sealing oil cover 25 for sealing the synchronous gear set 19 is fixedly installed on the left flange seat (the flange seat where the synchronous gear set 19 is located) and an oil disturbing reed 26 is installed on the synchronous gear set 19, wherein an oil filling hole and an oil discharging hole (not shown in the figure) are arranged on the oil cover 25, the oil filling hole and the oil discharging hole are both sealed by sealing bolts, so that the lubricating oil is convenient to replace, in addition, for the installation of the synchronous gear set 19, a long strip-shaped oil disturbing reed 26 made of the elastic metal and tightly pressed and fixed by a pressing cap can be installed on the outer end face of at least one synchronous gear in the synchronous gear set 19, and when the synchronous gear and the waist wheel rotate, the oil disturbing reed 26 rotates along with the waist wheel, the lubricating oil in the sealing oil cover is disturbed, the synchronous gear is lubricated, and the function of preventing the pressing cap from loosening is achieved at the same time.

Still further, a bracket 29 with a convex shape (shape shown in the figure) having a placing groove 30 is mounted on the driving magnetic transmission shaft, and the rotating shaft bearing is placed in the placing groove 30 of the bracket, so that the rotating shaft bearing of the driving magnetic transmission device is fixedly supported by the placing groove, and the stable rotation of the whole driving magnet is ensured.

The principle is as follows:

the fluid in the inner cavity of the impeller cavity shell and the fluid in the pipeline are isolated from the outside by utilizing the sealing housing and the sealing oil cover, after the impeller and the driving magnet at the shaft end of the impeller shaft are driven to rotate by the fluid, magnetic force penetrates through the sealing housing to drive the transmission magnetic device connected with the generator shaft outside the sealing housing to synchronously rotate, the transmission magnet and the motor shaft of the generator synchronously rotate to generate electricity, an explosion-proof joint for isolating a power output line from the outside is additionally arranged in the explosion-proof connecting wire box 9, the double-channel safety protection of the power output is improved, and the explosion-proof technical requirement is met.

And (3) selecting the types of the driving magnetic transmission device 6 and the driven magnetic transmission device 7: in this embodiment, a planar magnetic transmission structure is preferably adopted, and a side magnetic transmission structure and a magnetic transmission structure combined with a planar side can also be adopted; the main magnetic transmission device and the driven magnetic transmission device can be manufactured by themselves, and can also be purchased in the market, and the current manufacturers and product models are as follows: the model number produced by Guangdong Hui Square precision magnetic materials GmbH is: the top-tightening type parallel magnetic coupling of the HSF 06-D30-P6-D10S.

Claims

1. The utility model provides an explosion-proof pipeline generator of magnetic drive, includes impeller cavity casing (1) that has fluid to import and export, settles in impeller cavity casing and can be by rotatory impeller power component (2) of fluid promotion, can be to outer generator (3) of electricity generation, its characterized in that: still be provided with on impeller chamber casing (1) and be used for carrying out sealed housing (5) of keeping apart impeller power component and generator, still including with impeller power component (2) cooperation installation and just to initiative magnetic transmission device (6) of sealed housing, be provided with driven magnetic transmission device (7) on the motor shaft of generator (3), promote impeller power component (2) through the fluid and move, utilize the magnetic drive between initiative magnetic transmission device (6) and the driven magnetic transmission device (7) then to make the generator generate electricity.

2. The magnetic drive explosion-proof pipe generator of claim 1, wherein: the impeller cavity shell (1) is fixedly provided with a shell (4) perpendicular to the fluid inlet and outlet direction, the sealing cover shell (5) is positioned in the shell (4), and the generator (3) is arranged in the shell (4) and enables a driven magnetic transmission device (7) on a motor shaft of the generator to be opposite to the sealing cover shell (5).

3. The magnetic drive explosion-proof pipe generator of claim 2, wherein: be provided with sealed wiring structure on shell (4), still fixed mounting has explosion-proof terminal box (9) of encapsulation outside sealed wiring structure on shell (4), be provided with explosion-proof joint (10) on explosion-proof terminal box (9), the leading-out terminal of generator (3) is connected with external equipment through explosion-proof terminal box and utilization explosion-proof joint (10) again behind sealed wiring structure.

4. The magnetic drive explosion proof pipe generator of claim 3, wherein: the sealing wiring structure is composed of an isolation terminal groove (15) and an isolation terminal (8) arranged in the isolation terminal groove (15); and after the outlet end of the generator (3) is connected with the isolation terminal (8) through a power line, the isolation terminal (8) is connected with the explosion-proof joint (10) through the power line and then is connected with external equipment.

5. The magnetic drive explosion-proof pipe generator of claim 4, wherein: keep apart terminal (8) including mounting groove (12) and the terminal (13) of seal installation in the insulating slot that set up on insulation board (11), the insulation board, still be provided with on insulation board (11) and be located mounting groove outlying seal ring groove (14), terminal (13) seal installation is in the insulating slot and at the intussuseption of seal ring groove intussuseption sealing material.

6. A magnetically driven explosion proof pipe generator according to any one of claims 2 to 5, further comprising: the impeller power assembly (2) comprises a pair of impeller shafts (16), two mutually meshed pulleys (17) arranged on the impeller shafts and a pair of flange seats (18) used as supports; the two pulleys (17) are arranged behind the pair of impeller shafts (16) and supported and arranged through the pair of flange seats (18), and a pair of synchronous gear sets (19) which are positioned on the outer side of one of the flange seats (18) and are in transmission fit with each other are arranged on the pair of impeller shafts (16); one of the impeller shafts (16) is also provided with a power output part positioned on the outer side of the other flange seat (18), a power transmission part matched with the power output part is arranged on the flange seat through a rotating shaft, the power output part and the power transmission part form a transmission mechanism, and the active magnetic transmission device (6) is fixedly arranged on the rotating shaft and can synchronously rotate with the transmission mechanism.

7. A magnetically driven explosion proof pipe generator according to claim 6, wherein: two all be provided with step hole (22) on the flange seat, each the downthehole support bearing who has been used for supporting the impeller shaft of installing of step, two all install copper sheathing (23) that are located waist wheel (17) outside end on impeller shaft (16), two the copper sheathing of impeller shaft (16) can be positioned each downthehole and lean on the inboard terminal surface that presses at corresponding support bearing of step, two still install on the flange seat and be located outside step hole (22) and can press gland (24) on the support bearing.

8. The magnetic drive explosion proof pipe generator of claim 7, wherein: and a sealing oil cover (25) for packaging the synchronous gear set (19) is fixedly arranged on the flange seat (18) where the synchronous gear set (19) is positioned, and an oil disturbance reed (26) is arranged on the synchronous gear set (19).

9. The magnetic drive explosion proof pipe generator of claim 8, wherein: the impeller cavity shell (1) is also fixedly provided with an end cover (27) positioned on the opposite side of the shell (4), and sealing structures are arranged between the impeller cavity shell (1) and the flange seat (18), between the impeller cavity shell (1) and the shell (4) and between the impeller cavity shell (1) and the end cover (27).

10. A magnetically driven explosion proof pipe generator according to claim 7, 8 or 9, wherein: the rotating shaft is provided with a rotating shaft bearing, a bracket (29) with a placing groove (30) is arranged on the flange seat corresponding to the transmission mechanism, and the rotating shaft bearing is arranged in the placing groove (30) of the bracket.

11. A magnetically driven explosion proof pipe generator according to claim 10, wherein: the power output part is a transmission gear (20), the power transmission part is a meshing gear (21) meshed with the transmission gear, and the driving magnetic transmission device (6) is fixedly arranged on the rotating shaft and can synchronously rotate with the meshing gear.

12. A magnetically driven explosion proof pipe generator according to claim 10, wherein: the power output part is a driving magnetic wheel, the power transmission part is a driven magnetic wheel matched with the driving magnetic wheel, and the driving magnetic transmission device (6) is fixedly arranged on the rotating shaft and can synchronously rotate with the driven magnetic wheel.