CN215971490U - Oil filling connecting device - Google Patents
Oil filling connecting device Download PDFInfo
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- CN215971490U CN215971490U CN202122506218.2U CN202122506218U CN215971490U CN 215971490 U CN215971490 U CN 215971490U CN 202122506218 U CN202122506218 U CN 202122506218U CN 215971490 U CN215971490 U CN 215971490U
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Abstract
The utility model provides an oiling connecting device, and relates to the technical field of diesel locomotives. The oil filling connecting device is provided with an oil pipe joint detachably and hermetically connected with the output end of the oil filling pipe and an oil tank joint detachably and hermetically connected with the oil filling port of the oil tank, and the output end of the oil pipe joint is communicated with the input end of the oil tank joint. According to the refueling connecting device provided by the utility model, the oil pipe joint and the oil tank joint are arranged, so that the oil pipe joint is hermetically connected with the output end of the refueling pipe during refueling, the oil tank joint is hermetically connected with the refueling port of the fuel tank, and fuel is injected into the fuel tank after passing through the refueling connecting device, so that the fuel does not overflow during refueling, the refueling connecting device is safer, more energy-saving and cleaner, and personnel allocation during refueling can be reduced.
Description
Technical Field
The utility model relates to the technical field of diesel locomotives, in particular to an oiling connecting device.
Background
The fuel system is an important component of an internal combustion locomotive and is used for delivering fuel meeting pressure, temperature and cleanliness to a diesel engine of the internal combustion locomotive. The fuel system includes a fuel tank for storing fuel, a strainer, a transfer pump, a relief valve, a pre-heater, and a check valve.
As shown in FIG. 1, a fuel tank 100 in a fuel system of a diesel locomotive is provided with a fuel filling opening 110, and the top of the fuel tank 100 is provided with a breathing opening 130 for regulating the pressure in the fuel tank 100. The oil filling port 110 comprises an internal thread section 111 and an oil filling section 112 which are sequentially connected from outside to inside, wherein the inner diameter of the internal thread section 111 is larger than that of the oil filling section 112, and when oil is not filled, the oil filling port 110 is sealed by a sealing cover in threaded connection with the internal thread section 111. To prevent fuel theft, the fuel tank 100 is provided with an anti-theft device 120, and the anti-theft device 120 is a baffle plate spaced below the filling section 112 and blocking the pipe for pumping oil from extending into the fuel tank 100. When the fuel is filled, the fuel injected from the filler opening 100 flows into the fuel tank 100 through the gap between the antitheft device 120 and the filler opening 110.
The prior art method of filling fuel into a fuel tank 100 is to align and insert a filler gun connected to the output end of a filler tube into a filler neck 112 where the filler gun is freely placed or to hold the filler gun at the filler neck 112 by an operator and fill the fuel tank 100 with fuel through the filler gun.
Due to the existence of the anti-theft device 120, when the fuel tank 100 is filled with fuel through the fuel gun, the fuel injected into the fuel filler opening 110 is easy to overflow, and the overflow fuel not only causes resource waste, but also pollutes the environment and increases the potential safety hazard.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a refueling connecting device to solve the problem that when refueling is carried out in a fuel tank with an anti-theft device in the prior art, the refueling fuel easily overflows from a refueling port.
The utility model provides a refueling connecting device for a diesel locomotive, wherein the refueling connecting device is provided with an oil pipe joint which is detachably and hermetically connected with the output end of a refueling pipe and an oil tank joint which is detachably and hermetically connected with a refueling port of a fuel tank, and the output end of the oil pipe joint is communicated with the input end of the oil tank joint.
Optionally, the oil pipe joint and the oil tank joint are both of a columnar structure, the oil pipe joint and the oil tank joint are coaxially arranged, and the output end of the oil pipe joint is fixedly connected with the input end of the oil tank joint.
Optionally, the oil tank joint is an external thread joint, a sealing structure is arranged on the outer wall of the oil tank joint, an external thread on the oil tank joint is configured to be in threaded connection with an internal thread section of the oil filling port, and the sealing structure is configured to be in sealing fit with the oil filling port.
Optionally, the tank connection comprises a threaded connection section and a lead-in section which are coaxially connected.
The input end of the threaded connection section is fixedly connected with the output end of the oil pipe joint, and the output end of the threaded connection section is fixedly connected with the input end of the leading-in section.
The outer wall of the threaded connection section is provided with external threads, the outer wall of the threaded connection section and/or the outer wall of the leading-in section are/is provided with sealing structures, the outer diameter of the leading-in section is smaller than that of the threaded connection section, the leading-in section is constructed to be inserted into the oil filling section of the oil filling opening when the oil tank connector is in sealing connection with the oil filling opening, and the output end of the leading-in section is arranged at a distance from an anti-theft device in the oil tank.
Optionally, a sealing structure is arranged on the end face of the output end of the threaded connection section, and the sealing structure is used for being matched with the end face of the oil injection section in a sealing mode.
Optionally, the sealing structure is an elastic sealing ring, and the elastic sealing ring is sleeved outside the guiding-in section.
Optionally, the leading-in section is further configured such that when the tank connector is in sealed connection with the oil filling opening, the output end of the leading-in section does not protrude from the end of the oil filling section near the anti-theft device.
Optionally, the outer wall of the input end of the oil tank joint is fixedly connected with a screw head structure.
Optionally, the oil pipe joint is an external screw joint, and the end face of the input end of the oil pipe joint is configured to sealingly engage the end face of the output end of the filler pipe when the oil pipe joint is securely connected to the output end of the filler pipe.
Optionally, the inner wall of the input end of the oil pipe joint is a concave spherical surface, and the concave spherical surface is matched with the spherical joint of the output end of the oil filling pipe.
When the fuel is filled into the fuel tank, the fuel tank connector is hermetically connected with the fuel filling opening of the fuel tank, the fuel pipe connector is hermetically connected with the output end of the fuel filling pipe, after the connection is finished, the fuel conveyed through the fuel filling pipe sequentially passes through the fuel pipe connector and the fuel tank connector and is filled into the fuel tank, after the fuel filling is finished, the fuel pipe connector and the fuel tank connector are respectively disconnected with the fuel filling pipe and the fuel tank, and the sealing cover is covered, so that the fuel filling can be finished. After the oil filling connecting device is connected with the oil filling port and the output end of the oil filling pipe, as the oil tank joint and the oil pipe joint are hermetically connected at the oil filling port and the output end of the oil filling pipe, the filled fuel oil cannot overflow from the oil filling port or the output end of the oil filling pipe even if being blocked by the anti-theft device, and resource waste, environmental pollution and potential safety hazard caused by the overflowing fuel oil can be avoided; in addition, when the internal combustion locomotive is refueled, after the oil pipe joint and the oil tank joint are respectively connected with the fuel filling pipe and the fuel tank, a worker does not need to fix the fuel filling gun any more, only one worker needs to control the fuel filling machine at the fuel filling machine, and compared with a mode that one worker controls the fuel filling machine and the other worker holds the fuel filling gun to enable the fuel filling gun to be aligned with the fuel filling port and fixed at the fuel filling port, personnel allocation during refueling can be reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic view of a fuel tank provided with an anti-theft device;
fig. 2 is a schematic view of an embodiment of the refueling connection device according to the present invention.
Description of reference numerals:
100. a fuel tank;
110. an oil filler;
111. an internal thread section;
112. an oiling section;
120. an anti-theft device;
130. a breathing port;
210. a tank fitting;
211. a screw head structure;
212. a threaded connection section;
213. a lead-in section;
214. an elastic sealing ring;
220. an oil pipe joint;
221. concave spherical surface.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description above, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
When a fuel tank on an internal combustion locomotive is refueled by using a fuel gun connected with an output end of a fuel filling pipe, the fuel gun is inserted into a fuel filling opening of the fuel tank, and then the fuel gun is held by one person at the fuel tank, so that the fuel gun is fixed at the fuel filling opening, and the other person at the fuel filling machine controls the fuel filling machine to deliver fuel. Because a gap is formed between the fuel filling gun inserted into the fuel filler and the inner wall of the fuel filler, when the anti-theft device is arranged in the fuel tank, fuel injected into the fuel tank through the fuel filling gun impacts the anti-theft device, the fuel can generate backflushing under the obstruction of the anti-theft device, the injected fuel easily overflows through the gap between the fuel filler and the fuel filling gun, the overflowing fuel not only causes resource waste, but also pollutes the environment, and increases potential safety hazards.
In addition, the existing mode of refueling through a refueling gun needs to be provided with two workers for simultaneous operation, and the requirement on personnel configuration is high.
In order to solve the problem that fuel overflows from the fuel filling port during refueling, the scheme of reducing the flow rate of the fuel in the fuel filling pipe during refueling is adopted at present, so that the refueling speed is slow, the refueling time is long, two persons still need to operate, and a worker at the fuel filling port needs to observe the refueling condition of the fuel filling port constantly.
In the scheme provided by the application, the inventor of the application is provided with an oiling connecting device, wherein the oiling connecting device is provided with an oil pipe joint detachably and hermetically connected with the output end of an oiling pipe and an oil tank joint detachably and hermetically connected with an oiling port of a fuel tank, and the output end of the oil pipe joint is communicated with the input end of the oil tank joint.
When the fuel is filled into the fuel tank, the fuel tank joint is hermetically connected with a filling port of the fuel tank, the fuel pipe joint is hermetically connected with the output end of a filling pipe, after the connection is finished, the fuel conveyed through the filling pipe sequentially passes through the fuel pipe joint and the fuel tank joint and is injected into the fuel tank, after the fuel filling is finished, the fuel pipe joint and the fuel tank joint are respectively disconnected with the filling pipe and the fuel tank, and the sealing cover is covered, so that the filling can be finished.
After the oil filling connecting device is connected with the output ends of the oil filling port and the oil filling pipe, the oil tank connector and the oil pipe connector are hermetically connected at the output ends of the oil filling port and the oil filling pipe, so that the filled fuel oil cannot overflow from the output end of the oil filling port or the oil filling pipe even if being blocked by the anti-theft device, and resource waste, environmental pollution and potential safety hazard caused by the overflow fuel oil can be avoided.
In addition, when the internal combustion locomotive is refueled, after the oil pipe joint and the oil tank joint are respectively connected with the fuel filling pipe and the fuel tank, a worker does not need to fix the fuel filling gun any more, only one worker needs to control the fuel filling machine at the fuel filling machine, and compared with a mode that one worker controls the fuel filling machine and the other worker holds the fuel filling gun to enable the fuel filling gun to be aligned with the fuel filling port and fixed at the fuel filling port, personnel allocation during refueling can be reduced.
The refueling connection device provided by the application is described in detail with reference to specific embodiments.
Fig. 2 is a schematic view of an embodiment of the proposed refuelling connection arrangement.
As shown in fig. 2 and referring to fig. 1, the refueling connection device provided in this embodiment is used for a diesel locomotive, and is provided with a fuel pipe joint 220 for detachably and hermetically connecting with an output end of a fuel filler pipe and a fuel tank joint 210 for detachably and hermetically connecting with a fuel filler port 110 of a fuel tank 100, wherein an output end of the fuel pipe joint 220 is communicated with an input end of the fuel tank joint 210.
In the above embodiment, the tank joint 210 is hermetically connected to the filler opening 110 of the fuel tank 100 and the fuel line joint 220 is hermetically connected to the output end of the filler pipe at the time of refueling, and the fuel is supplied into the fuel tank 100 by controlling the fuel dispenser, and after refueling is completed, the output end of the filler pipe is disconnected from the fuel line joint 220 and the tank joint 210 is disconnected from the filler opening 110.
After the refueling connecting device is connected with the output ends of the refueling port 110 and the refueling pipe, as the oil tank joint 210 and the oil pipe joint 220 are hermetically connected at the output ends of the refueling port 110 and the refueling pipe, the refueling fuel oil cannot overflow from the output end of the refueling port 110 or the output end of the refueling pipe even if being blocked by the anti-theft device 120, so that resource waste, environmental pollution and potential safety hazard caused by the overflowing fuel oil can be avoided.
In addition, when the internal combustion locomotive is refueled, after the oil pipe joint 220 and the oil tank joint 210 are respectively connected with the fuel filling pipe and the fuel tank 100, a worker does not need to fix a fuel filling gun, only one worker controls the fuel filling machine at the fuel filling machine, and compared with a mode that one worker controls the fuel filling machine and the other worker holds the fuel filling gun to enable the fuel filling gun to be aligned with the fuel filling opening 110 and fixed at the fuel filling opening 110, personnel allocation during refueling can be reduced.
It should be noted that the input end of the filler tube is connected to the fuel dispenser, and the fuel dispenser delivers the fuel in the fuel tank to the filler tube by the fuel pump, and then the fuel is filled into the fuel tank 100 by the fuel connection device connecting the output end of the filler tube and the filler opening of the fuel tank 100.
It can be understood that the pipe joint 220 and the tank joint 210 can be selected according to actual requirements, and joints corresponding to the output ends of the oil filling opening 110 and the oil filling pipe can be selected, for example, joints which can be detachably connected such as threaded joints and clamping joints, and the pipe joint 220 and the tank joint 210 can be detachably connected with the oil filling pipe and the oil filling opening 110 through clamping, threaded connection and the like.
In some possible embodiments, the oil pipe joint 220 and the oil tank joint 210 are both cylindrical structures, the oil pipe joint 220 and the oil tank joint 210 are coaxially arranged, and the output end of the oil pipe joint 220 is tightly connected with the input end of the oil tank joint 210.
So set up, the fuel flow path between the input of oil pipe joint 220 to the output of tank joint 210 is short, can not influence the speed of refueling to, refuel the surplus oil in the connecting device is few after the completion of refueling.
For example, the oil pipe joint 220 and the oil tank joint 210 are cylindrical structures, which are convenient for providing threads on the outer walls thereof for threaded connection.
The tank joint 210 and the pipe joint 220 of the refueling connecting device can be formed by integral casting and can also be welded.
In other examples, the tank joint 210 and the pipe joint 220 may be arranged non-coaxially, such as in a "U" shape. In addition, the oil tank connector 210 and the oil pipe connector 220 can be movably connected through a hose.
In some possible embodiments, the tank connector 210 is a male connector, and the outer wall of the tank connector 210 is provided with a sealing structure, the male connector on the tank connector 210 is configured to be screwed with the female thread section 111 of the oil filler hole 110, and the sealing structure is configured to be in sealing fit with the oil filler hole 110.
So set up, oil tank joint 210 and oil filler hole 110 easy dismounting.
It is understood that the inner wall of the filler neck 110 of the fuel tank 100 is provided with an internal thread section 111 for screwing with the sealing cap, and the outer wall of the sealing cap is provided with an external thread, so that the tank joint 210 can be screwed with the internal thread section 111 after the sealing cap is detached from the filler neck 110.
In some possible embodiments, the tank fitting 210 includes a threaded connection section 212 and a lead-in section 213 that are coaxially connected.
The input end of the threaded connection section 212 is fixedly connected with the output end of the oil pipe joint 220, and the output end of the threaded connection section 212 is fixedly connected with the input end of the leading-in section 213.
The outer wall of the threaded connection section 212 is provided with external threads, the outer wall of the threaded connection section 212 and/or the introduction section 213 is provided with a sealing structure, the outer diameter of the introduction section 213 is smaller than the outer diameter of the threaded connection section 212, the introduction section 213 is configured to be inserted into the filler section 112 of the filler opening 110 when the tank joint 210 is sealingly connected with the filler opening 110, and the output end of the introduction section 213 is spaced apart from the antitheft device 120 in the fuel tank 100.
With this arrangement, fuel delivered from the filler tube is injected into the fuel tank 100 through the outlet end of the introduction section 213, and the outlet end of the introduction section 213 penetrates further into the fuel tank 100, so that adhesion of fuel to the inner wall of the filler opening 110 is reduced, and fuel carried over from the filler opening 110 by the tank joint 210 after disconnection is reduced.
It is understood that the filler opening 110 of the fuel tank 100 includes an internal thread section 111 and a filler section 112 connected in sequence from the outside to the inside, the threaded connection section 212 of the tube joint 220 is threaded with the internal thread section 111, and the outer diameter of the introduction section 213 is smaller than the inner diameter of the filler section 112.
The outer wall of the threaded connection section 212 near the output end portion of the tubing joint may be smooth.
Of course, in other examples, the fuel tank connector 210 may be provided without the introduction section 213, and the fuel may be filled into the fuel filler port 110 directly through the output end of the threaded connection section 212.
In some possible embodiments, the end face of the output end of the threaded connection section 212 is provided with a sealing structure for sealing engagement with the end face of the oil injection section 112.
So set up, seal structure sets up conveniently, and sealed face is in oil filler hole 110, and sealing performance is better, and reducible tank nipple 210 removes the fuel that takes out after being connected with oil filler hole 110, in addition, accessible swivel tank nipple 210 makes the terminal surface of the output of threaded connection section 212 compress tightly with the terminal surface of oiling section 112 to improve sealed effect.
It is understood that the sealing structure may be a sealing ring, a sealing frame, or other common sealing elements.
In some possible embodiments, the sealing structure is an elastic sealing ring 214, and the elastic sealing ring 214 is sleeved outside the introduction section 213.
So set up, be convenient for installation, change, low cost, and elastic sealing ring 214 receives two terminal surfaces extrusion backs, and is sealed effectual.
It is understood that a seal groove for installing the elastic sealing ring 214 may be formed on an end surface of the output end of the screw coupling section 212, the elastic sealing ring 214 may be installed in the seal groove, and the elastic sealing ring 214 may be fixed to the introduction section 213 by an elastic force of the elastic sealing ring 214.
In some possible embodiments, the introduction section 213 is further configured such that when the tank connector 210 is sealingly connected to the oil filler opening 110, the output end of the introduction section 213 does not protrude from the end of the oil filling section 112 near the anti-theft device 120.
With such an arrangement, the distance between the output end of the introduction section 213 and the anti-theft device 120 is not less than the distance between the end of the fuel injection section 112 close to the anti-theft device 120 and the anti-theft device 120, so that the narrowing of the fuel flow path caused by the excessive extension of the introduction section 213 can be avoided, and the flow rate of the fuel injected into the introduction section 213 through the anti-theft device 120 can be ensured.
It will be appreciated that the length of lead-in section 213 may be less than or equal to the length of oil injection section 112 in order to ensure that the output end of lead-in section 213 does not protrude beyond the end of oil injection section 112 near anti-theft device 120.
In some examples, the lead-in section 213 is configured such that when the tank fitting 210 is sealingly connected to the filler opening 110, the output end of the lead-in section 213 is flush with the end of the filler section 112 near the anti-theft device 120.
With this arrangement, the flow rate of the fuel injected into the introduction section 213 through the antitheft device 120 can be ensured, and the adhesion of the fuel to the inner wall of the filler opening 110 can be reduced.
In some possible embodiments, a screw head structure 211 is fixedly connected to an outer wall of the input end of the tank joint 210.
So set up, make things convenient for rotatory oil tank to connect 210, do benefit to the dismouting of oil tank joint 210 on oil filler hole 110.
For example, the screw head structure 211 may be an external hexagonal screw head structure.
In some examples, the sealing structure may also be disposed on an end surface where the screw head structure 211 is connected with the threaded connection section 212. The sealing structure may also be an elastic sealing ring 214, and the elastic sealing ring 214 may be fixed at the root of the threaded connection section 214 by its own elastic force.
In some possible embodiments, the tubing connector 220 is a male connector, and the end face of the input end of the tubing connector 220 is configured to sealingly mate with the end face of the output end of the filler tube when the tubing connector 220 is securely connected to the output end of the filler tube.
So set up, oil pipe joint 220 and oil filling pipe easy dismounting.
It can be understood that the oil filling pipe can be connected with an oil filling pipe of an oil filling gun, a rotatable threaded sleeve is arranged at the output end of the oil filling pipe, an oil outlet at the output end of the oil filling pipe is arranged in the threaded sleeve, the oil pipe joint 220 is in threaded connection with internal threads on the threaded sleeve, and a sealing structure is formed after the input end of the oil pipe joint 220 is abutted to the oil outlet.
In some possible embodiments, the inner wall of the input end of the oil pipe joint 220 is a concave spherical surface 221, and the concave spherical surface 221 is matched with the spherical joint of the output end of the oil filling pipe.
So set up, after oil pipe joint 220 is connected with the output that adds the oil pipe, sealed effectual.
It can be understood that the oil outlet of the output end of the oil filling pipe is provided with a spherical joint, and the spherical structure is arranged in the threaded sleeve.
In other examples, the inner wall of the input section of the tubing joint 220 may be flush, rather than concave spherical surface 221.
In some examples, a sealing structure such as a gasket may be disposed on the end face of the input end of the tubing joint 220.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The oil filling connecting device is used for a diesel locomotive and is characterized in that an oil pipe joint detachably and hermetically connected with the output end of an oil filling pipe and an oil tank joint detachably and hermetically connected with an oil filling port of an oil tank are arranged on the oil filling connecting device, and the output end of the oil pipe joint is communicated with the input end of the oil tank joint.
2. The refueling connection device as recited in claim 1 wherein the fuel line connector and the fuel tank connector are both of a cylindrical configuration, the fuel line connector and the fuel tank connector are coaxially disposed, and the output end of the fuel line connector is fixedly connected to the input end of the fuel tank connector.
3. The refueling connection device as recited in claim 2 wherein the tank fitting is a male connector, and wherein a sealing structure is provided on an outer wall of the tank fitting, the male connector on the tank fitting being configured for threaded connection with the female threaded section of the refueling port, the sealing structure being configured for sealing engagement with the refueling port.
4. The refueling connection device as recited in claim 3 wherein the tank fitting includes a threaded connection section and a lead-in section that are coaxially connected;
the input end of the threaded connection section is fixedly connected with the output end of the oil pipe joint, and the output end of the threaded connection section is fixedly connected with the input end of the lead-in section;
be equipped with on the outer wall of threaded connection section the external screw thread, threaded connection section and/or be equipped with on the outer wall of leading-in section seal structure, the external diameter of leading-in section is less than the external diameter of threaded connection section, leading-in section is constructed to be in the oil tank connect with insert during oil filler hole sealing connection the oiling section of oil filler hole, just the output of leading-in section with anti-theft device interval in the fuel tank sets up.
5. The refueling connection device as recited in claim 4 wherein the sealing structure is disposed on an end face of the output end of the threaded connection section, the sealing structure being adapted to sealingly engage an end face of the refueling section.
6. The refueling connection device as recited in claim 5 wherein said sealing structure is an elastomeric seal that is disposed about said induction section.
7. The refueling connection device as recited in claim 4, wherein the induction section is further configured such that the outlet end of the induction section does not protrude from the end of the filler section near the anti-theft device when the tank fitting is sealingly connected to the filler opening.
8. The refueling connection device as recited in claim 3 wherein a threaded head structure is fixedly attached to an outer wall of the input end of the tank fitting.
9. The refueling connection device as recited in claim 1 wherein the tubing connector is a male connector and the end face of the input end of the tubing connector is configured to sealingly engage the end face of the output end of the filler tube when the tubing connector is securely connected to the output end of the filler tube.
10. The refueling connection device as recited in claim 9 wherein the inner wall of the input end of the tubing connector is a concave spherical surface that mates with the spherical surface of the output end of the refueling pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122506218.2U CN215971490U (en) | 2021-10-18 | 2021-10-18 | Oil filling connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122506218.2U CN215971490U (en) | 2021-10-18 | 2021-10-18 | Oil filling connecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215971490U true CN215971490U (en) | 2022-03-08 |
Family
ID=80512120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122506218.2U Active CN215971490U (en) | 2021-10-18 | 2021-10-18 | Oil filling connecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215971490U (en) |
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2021
- 2021-10-18 CN CN202122506218.2U patent/CN215971490U/en active Active
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