Methanol filling structure for preventing methanol permeation

Abstract

The utility model relates to the technical field of methanol filling structure discloses prevent methanol seepage's methanol filling structure, including jar body, the inside of jar body has jar cavity, jar body is equipped with tubular body, jar body has inside section and outside section, outside section is connected with the pump body, and the connecting pipe is connected on the pump body, and the connecting pipe has the longitudinal section, and the connecting pipe is connected with the conveying hose, the inside wall of longitudinal section protrudes and has upper convex ring and lower convex ring, upper convex ring and lower convex ring are along longitudinal section arrangement, and upper convex ring is surrounded and forms the middle hole, and lower convex ring is surrounded and forms the tapered hole, the diameter of tapered hole gradually increases from below to above, and there is interval area between tapered hole and middle hole, the plugging head is equipped in the tapered hole, the spring is connected with the plugging head, and the upper end and lower end of spring are connected with upper convex ring and plugging head respectively, utilize the principle that the plugging head is opened by the pressure that methanol liquid flow brings when pump body starts, and the spring force drives the plugging head to adhere to the tapered hole when pump body stops, has improved the security of whole.

Description

Technical Field

[0001] This utility model relates to the technical field of methanol filling structures, and more specifically, to a methanol filling structure that prevents methanol leakage. Background Technology

[0002] Methanol fuel is a new type of clean fuel made by blending industrial methanol or fuel methanol with denatured alcohol additives, or with existing national standard gasoline and diesel, in a certain volume using a strict scientific process. It can replace gasoline and diesel and be used in various motor vehicles and stoves. Because the methanol storage tanks at methanol refueling stations are limited, it is necessary to refuel the methanol at the refueling stations frequently. Usually, methanol is transported to the site by vehicle and then refueled into the storage tanks.

[0003] In existing technologies, when methanol needs to be added to the storage tank, the residual methanol in the main pipeline cannot be observed. Some methanol fuel may remain on the inside of the vertical part of the injection pipe and may even seep into the inlet pipe, causing methanol leakage, which poses a certain safety hazard. Moreover, after the filling is completed, the injection pipeline connecting the external tanker to the metering pump needs to be disconnected. At this time, the liquid remaining in the injection pipeline may cause secondary splashing, posing a risk of workers being burned by methanol solution, resulting in low safety. Utility Model Content

[0004] The purpose of this invention is to provide a methanol filling structure that prevents methanol leakage, thereby solving the problem of low safety caused by methanol leakage during filling in the prior art.

[0005] This utility model is implemented as follows: a methanol filling structure that prevents methanol leakage includes a tank body, the interior of which has a cavity for storing liquid methanol, the tank body is provided with a pipe, the tank body has an internal section extending into the cavity and an external section exposed on the tank body; the external section is connected to a pump body, the pump body is connected to a connecting pipe, the connecting pipe has a longitudinally arranged longitudinal section, and the connecting pipe is connected to a delivery hose for conveying liquid methanol to a tank truck. The inner wall of the longitudinal section is provided with a horizontally arranged upper protruding ring, which is arranged around the circumference of the longitudinal section and forms a central hole. The inner wall of the longitudinal section is provided with a horizontally arranged lower protruding ring, which is arranged around the circumference of the longitudinal section and forms a conical hole. Along the tapered hole from bottom to top, the diameter of the tapered hole gradually increases, and the tapered hole and the middle hole are spaced apart, with a gap area; a sealing head is provided in the tapered hole, and the sealing head is connected to a spring. The upper end of the spring is fixedly connected to the upper convex ring, and the lower end of the spring is fixedly connected to the sealing head. When the pump body is in operation, when the pump body draws liquid methanol from the tank cavity through the passage, the liquid methanol squeezes the plug head upward, the plug head disengages from the inner wall of the conical hole, the spring is compressed upward, and the longitudinal section is in a connected state. When the pump body is in a stopped state, the spring drives the sealing head to move downwards, and the sealing head abuts against the inner wall of the tapered hole, and the longitudinal section is in a disconnected state.

[0006] Furthermore, when the longitudinal section is in the interrupted state, the spring is in the pre-compressed state.

[0007] Furthermore, the connecting pipe has a horizontally arranged section that is connected to the delivery hose.

[0008] Furthermore, the horizontal section is provided with inclined pipe holes, and along the longitudinal section to the delivery hose, the pipe holes are inclined upwards.

[0009] Furthermore, the pipe hole penetrates the inner end of the horizontal section, forming an inner end opening, and the inner end of the horizontal section is connected to the longitudinal section, with the inner end opening communicating with the longitudinal section; the pipe hole penetrates the outer end of the horizontal section, forming an outer end opening, with the outer end opening communicating with the delivery hose; an isolation ring is protruding on the inner sidewall of the pipe hole, and the isolation ring is arranged around the circumference of the pipe hole.

[0010] Furthermore, the inner wall of the pipe hole is provided with a plurality of isolation rings, which are arranged at intervals along the axial direction of the pipe hole.

[0011] Furthermore, the outer end opening is provided with an outer end ring, which is arranged around the circumference of the tube hole. The outer end of the outer end ring is connected to the outer end of the horizontal section, and the inner end of the outer end ring extends toward the middle of the outer end opening to narrow the outer end opening.

[0012] Furthermore, the bottom of the inner section extends to the bottom of the tank cavity, and the bottom of the inner section branches into multiple branch tubes. The outer ends of the multiple branch tubes are arranged around the bottom of the inner section at intervals, and the inner ends of the multiple branch tubes converge and communicate with the bottom of the inner section.

[0013] Furthermore, the outer periphery of the bifurcated tube is provided with multiple peripheral holes.

[0014] Furthermore, the top of the tank is provided with an injection head for injecting liquid methanol into the tank cavity. The injection head is equipped with a valve, which is used to open or close the injection head.

[0015] Compared with existing technologies, the methanol filling structure provided by this utility model, which prevents methanol leakage, integrates the connecting pipe, spring, and pump body into an automatic shut-off valve. When the pump body starts, the longitudinal section is in a connected state, and the sealing head is pushed open by the pressure of the methanol liquid flow. When the pump body stops, the longitudinal section is in a disconnected state, and the spring drives the sealing head to fit tightly against the conical hole. In this way, a rapid-response and reliable automatic on / off control is achieved, thereby ensuring smooth methanol transportation in the tank while preventing methanol leakage and backflow when the pump is stopped, significantly improving the safety of the methanol filling structure. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the methanol filling structure for preventing methanol leakage provided by this utility model; Figure 2 This is a cross-sectional structural diagram of the connecting pipe provided by this utility model; In the diagram: Tank body 100, tank cavity 101, internal section 201, external section 202, branch pipe 203, outer peripheral hole 204, injection head 300, valve 301, connecting pipe 400, horizontal section 401, longitudinal section 402, delivery hose 500, lower convex ring 601, upper convex ring 602, spring 603, conical hole 604, interval area 605, central hole 606, sealing head 607, isolation ring 701, outer end ring 702, pump body 800, pipe hole 900, outer end opening 901. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0018] The implementation of this utility model will be described in detail below with reference to specific embodiments.

[0019] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0020] Reference Figure 1-2The image shown is a preferred embodiment of the present invention.

[0021] A methanol refueling structure to prevent methanol leakage includes a tank body 100, the interior of which has a cavity 101 for storing liquid methanol. The tank body 100 is provided with a pipe, and the tank body 100 has an internal section 201 extending into the cavity 101 and an external section 202 exposed on the tank body 100. The external section 202 is connected to a pump body 800, and a connecting pipe 400 is connected to the pump body 800. The connecting pipe 400 has a longitudinally arranged longitudinal section 402, and the connecting pipe 400 is connected to a delivery hose 500 for delivering liquid methanol to a tank truck. The inner wall of the longitudinal section 402 is provided with a horizontally arranged upper protruding ring 602, which is arranged around the longitudinal section 402 in the circumference and forms a central hole 606; the inner wall of the longitudinal section 402 is provided with a horizontally arranged lower protruding ring 601, which is arranged around the longitudinal section 402 in the circumference and forms a tapered hole 604. Along the tapered hole 604 from bottom to top, the diameter of the tapered hole 604 gradually increases. The tapered hole 604 and the middle hole 606 are arranged at intervals, with an interval region 605. A sealing head 607 is provided in the tapered hole 604. The sealing head 607 is connected to a spring 603. The upper end of the spring 603 is fixedly connected to the upper convex ring 602, and the lower end of the spring 603 is fixedly connected to the sealing head 607. When the pump body 800 is in working condition, when the pump body 800 draws liquid methanol from the tank cavity 101 through the passage, the liquid methanol squeezes the plug head 607 to move upward, the plug head 607 disengages from the inner wall of the conical hole 604, the spring 603 is compressed upward, and the longitudinal section 402 is in a connected state. When the pump body 800 is in the stopped state, the spring 603 drives the sealing head 607 to move downward, and the sealing head 607 abuts against the inner wall of the tapered hole 604, and the longitudinal section 402 is in the isolated state.

[0022] The methanol refueling structure described above, designed to prevent methanol leakage, integrates the connecting pipe 400, spring 603, and pump body 800 into an automatic shut-off valve. When the pump body 800 starts, the longitudinal section 402 is in a connected state, and the sealing head 607 is pushed open by the pressure of the flowing methanol. When the pump body 800 stops, the longitudinal section 402 is in a disconnected state, and the spring 603 drives the sealing head 607 to fit tightly against the conical hole 604. This achieves a rapid-response, reliable, and automatic on / off control, ensuring smooth methanol flow within the tank 100 while preventing methanol leakage and backflow during shutdown, significantly improving the safety of the methanol refueling structure.

[0023] In this embodiment, when the longitudinal section 402 is in the isolated state, the spring 603 is in the pre-compressed state. By limiting the spring 603 to the pre-compressed state in the isolated state, an initial spring force can be provided to the plug head 607 when the pump body 800 is stopped. This ensures that the valve 301 can achieve instantaneous and rapid closure without delay when the pump body 800 stops, and also allows the plug head 607 and the conical hole 604 to fit tightly together, preventing methanol leakage.

[0024] In this embodiment, the connecting pipe 400 has a horizontally arranged section 401, which connects to the delivery hose 500. The horizontal section 401 ensures a smooth transition of the delivery hose 500 from vertical to horizontal, facilitating the connection between the connecting pipe 400 and the delivery hose 500. More importantly, it effectively solves the problems of sharp bends and undue stress in the delivery hose 500, thereby extending the service life of the delivery hose 500, ensuring smooth methanol delivery, and improving the operational convenience of the methanol refueling structure.

[0025] In this embodiment, the horizontal section 401 is provided with an inclined pipe hole 900, which is inclined upwards along the longitudinal section 402 to the delivery hose 500. By arranging the pipe hole 900 of the horizontal section 401 upwards towards the delivery hose 500, the delivery hose 500 has a self-draining function for residual liquid by utilizing the principle of gravity. This effectively drains residual methanol, thereby reducing methanol leakage and evaporation when disassembling the delivery hose 500, and significantly improving the safety and environmental friendliness of the operation process.

[0026] In this embodiment, the pipe hole 900 penetrates the inner end of the horizontal section 401 to form an inner end opening. The inner end of the horizontal section 401 is connected to the longitudinal section 402, and the inner end opening is connected to the longitudinal section 402. The pipe hole 900 penetrates the outer end of the horizontal section 401 to form an outer end opening 901, and the outer end opening 901 is connected to the delivery hose 500. An isolation ring 701 is protruding on the inner sidewall of the pipe hole 900, and the isolation ring 701 is arranged around the circumference of the pipe hole 900. A circumferential isolation ring 701 is installed inside the horizontal section 401 bore 900, which is equivalent to creating a physical barrier inside the horizontal section 401. This not only stabilizes the methanol delivery process by disrupting the flow field and promoting gas-liquid mixing, but more importantly, it effectively blocks flames and pressure waves that may be transmitted back from the delivery hose 500 end, thereby improving the backfire prevention safety level and intrinsic safety of the methanol refueling structure under extreme conditions.

[0027] In this embodiment, multiple isolation rings 701 protrude from the inner wall of the orifice 900, and these isolation rings 701 are arranged at intervals along the axial direction of the orifice 900. By setting multiple axially spaced isolation rings 701, it is possible to ensure that in the event of an accident during the filling process, the isolation rings 701 can form a multi-level defense, gradually weakening the intensity of the flame. In this way, a multi-level, cooperative protection and optimization structure is constructed within the horizontal section 401, enhancing the safety redundancy and reliability of blocking flame backflow, and further optimizing the flow field and eliminating gas resistance through continuous perturbation.

[0028] In this embodiment, an outer end ring 702 protrudes from the outer end opening 901. The outer end ring 702 is arranged around the circumference of the pipe hole 900. The outer end of the outer end ring 702 is connected to the outer end of the horizontal section 401. The inner end of the outer end ring 702 extends toward the middle of the outer end opening 901 to reduce the size of the outer end opening 901. An inwardly extending outer end ring 702 is provided at the outer end opening 901 of the horizontal section 401. This prevents the delivery hose 500 from accidentally detaching under pressure or external force, ensures the connection between the delivery hose 500 and the horizontal section 401, provides guidance for quick and accurate docking, and enhances the overall sealing performance. Simultaneously, by setting the outer end ring 702, the outer end opening 901 is reduced, which significantly reduces methanol leakage.

[0029] In this embodiment, the bottom of the inner section 201 extends to the bottom of the tank cavity 101. The bottom of the inner section 201 branches into multiple branch pipes 203. The outer ends of the multiple branch pipes 203 are arranged at intervals around the bottom of the inner section 201, and the inner ends of the multiple branch pipes 203 converge and communicate with the bottom of the inner section 201. By branching the bottom of the inner section 201 into multiple surrounding branch pipes 203, the inner section 201 covers a larger area of ​​the bottom of the tank cavity 101, thereby enabling methanol to be transported out from the inner section 201 from all directions, reducing methanol residue and significantly improving methanol utilization.

[0030] In this embodiment, the outer periphery of the branch pipe 203 is provided with multiple peripheral holes 204. By providing multiple peripheral holes 204 on the outer periphery of the branch pipe 203, more methanol is allowed to enter through the peripheral holes, avoiding methanol residue in the tank 100. This not only almost completely empties the residual liquid in the tank and greatly improves the utilization rate of methanol, but also prevents suction port blockage by providing redundant paths. Furthermore, with a lower local flow velocity, the generation of eddies and the agitation of sediment are further suppressed, ensuring the stable operation of the pump 800 in the final stage of methanol delivery.

[0031] In this embodiment, the top of the tank 100 is provided with an injection head 300 for injecting liquid methanol into the tank cavity 101. The injection head 300 is equipped with a valve 301, which is used to open or close the injection head 300. The injection head 300 with valve 301 not only establishes an injection channel for the methanol injection structure, but also separates the injection and transportation functions of the methanol injection structure.

[0032] In addition, by controlling the opening and closing of valve 301, methanol is difficult to leak out of tank 100 and can isolate external contaminants, thereby ensuring the sealing of tank cavity 101 during standing and transportation, and improving the overall safety of storage and operation.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A methanol filling structure for preventing methanol permeation, characterized by, The device includes a tank body, the interior of which has a cavity for storing liquid methanol. The tank body is provided with a pipe, and the tank body has an internal section extending into the cavity and an external section exposed on the tank body. The external section is connected to a pump body, and the pump body is connected to a connecting pipe. The connecting pipe has a longitudinally arranged longitudinal section and is connected to a delivery hose for delivering liquid methanol to a tank truck. The inner wall of the longitudinal section is provided with a horizontally arranged upper protruding ring, which is arranged around the circumference of the longitudinal section and forms a central hole. The inner wall of the longitudinal section is provided with a horizontally arranged lower protruding ring, which is arranged around the circumference of the longitudinal section and forms a conical hole. Along the tapered hole from bottom to top, the diameter of the tapered hole gradually increases, and the tapered hole and the middle hole are spaced apart, with a gap area; a sealing head is provided in the tapered hole, and the sealing head is connected to a spring. The upper end of the spring is fixedly connected to the upper convex ring, and the lower end of the spring is fixedly connected to the sealing head. When the pump body is in operation, when the pump body draws liquid methanol from the tank cavity through the passage, the liquid methanol squeezes the plug head upward, the plug head disengages from the inner wall of the conical hole, the spring is compressed upward, and the longitudinal section is in a connected state. When the pump body is in a stopped state, the spring drives the sealing head to move downwards, and the sealing head abuts against the inner wall of the tapered hole, and the longitudinal section is in a disconnected state.

2. A methanol filler structure for preventing methanol permeation according to claim 1, wherein When the longitudinal section is in the interrupted state, the spring is in the pre-compressed state.

3. A methanol filler structure for preventing methanol permeation according to claim 1, wherein The connecting pipe has a horizontally arranged section, which is connected to the delivery hose.

4. A methanol filler structure preventing methanol permeation according to claim 3, wherein The horizontal section is provided with inclined pipe holes, and along the longitudinal section to the delivery hose, the pipe holes are inclined upwards.

5. A methanol filler structure preventing methanol permeation according to claim 4, wherein The pipe hole penetrates the inner end of the horizontal section, forming an inner end opening. The inner end of the horizontal section is connected to the longitudinal section, and the inner end opening is connected to the longitudinal section. The pipe hole penetrates the outer end of the horizontal section, forming an outer end opening, and the outer end opening is connected to the delivery hose. An isolation ring is protruding on the inner sidewall of the pipe hole, and the isolation ring is arranged around the circumference of the pipe hole.

6. A methanol filler structure preventing methanol permeation according to claim 5, wherein The inner wall of the pipe hole is provided with a plurality of isolation rings, which are arranged at intervals along the axial direction of the pipe hole.

7. A methanol filler structure preventing methanol permeation according to claim 5, wherein The outer end opening is provided with an outer end ring, which is arranged around the circumference of the pipe hole. The outer end of the outer end ring is connected to the outer end of the horizontal section, and the inner end of the outer end ring extends toward the middle of the outer end opening to narrow the outer end opening.

8. A methanol filler structure preventing methanol permeation according to any one of claims 1 to 7, characterized by The bottom of the inner section extends to the bottom of the tank cavity. The bottom of the inner section branches into multiple branch tubes. The outer ends of the multiple branch tubes are arranged at intervals around the bottom of the inner section. The inner ends of the multiple branch tubes converge and communicate with the bottom of the inner section.

9. A methanol filler structure preventing methanol permeation according to claim 8, wherein The outer periphery of the bifurcation tube is provided with multiple peripheral holes.

10. A methanol filler structure preventing methanol permeation according to any one of claims 1 to 7, wherein The top of the tank is equipped with an injection head for injecting liquid methanol into the tank cavity. The injection head is equipped with a valve, which is used to open or close the injection head.

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