One-way right-angle connector for LNG booster pump high-pressure liquid hydrogen pipeline

Abstract

The utility model relates to the technical field of LNG booster pumps, in particular to a one-way right-angle connector for a high-pressure liquid hydrogen pipeline of an LNG booster pump. Comprising a right-angle valve body, a liquid inlet channel is formed in one side in the right-angle valve body, a liquid outlet channel is formed in the other side in the right-angle valve body, the liquid inlet channel and the liquid outlet channel are communicated through a right-angle channel, a non-return core is movably installed in the liquid outlet channel, and one side of the non-return core is used for opening or closing the right-angle channel. A valve core is fixedly mounted in the liquid outlet channel on the other side of the non-return core; and a compression spring is arranged between the valve core and the non-return core. By adopting the right-angle valve body, the direction of the high-pressure liquid hydrogen pipeline can be changed when the high-pressure liquid hydrogen pipeline is connected with an external pipeline, interference between the high-pressure liquid hydrogen pipeline and the LNG booster pump is avoided, sufficient operation space is obtained, pipe fitting connection is more compact, and the risk of liquid hydrogen leakage is avoided; after high-pressure liquid hydrogen enters, the inner right-angle channel can play a buffering role, the high-pressure liquid hydrogen is prevented from directly impacting the check core and the valve element, the protection role is played, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to LNG booster pump technical field especially relates to a LNG booster pump high pressure liquid hydrogen pipeline is with one way right angle joint. BACKGROUND

[0002] At present, LNG booster pump is the device for pressurizing liquid hydrogen in LNG vehicle, when using, it is inserted into LNG bottle, through hydraulic cylinder drive compression cylinder work, realize the pressurization to the liquid hydrogen in LNG bottle, the liquid hydrogen after pressurization is transported outward through high pressure liquid hydrogen pipeline. When connecting high pressure liquid hydrogen pipeline and external pipeline, now generally all use conventional straight through joint, the straight through joint is equipped with check valve, the defect of this structure is that one is limited operation space, is easy to interfere with LNG booster pump, lead to pipe fitting connection difficulty, if connection is not solid, liquid hydrogen leakage risk appears, two is that high pressure liquid hydrogen pressure can reach 50 megapascal, directly impact check valve in straight through joint, when using for a long time, check valve is easy to damage, short life, lose check valve function and lead to liquid hydrogen backflow risk, there is no good method to solve the above problems.

[0003] In summary, the above problems of the vehicle-mounted LNG booster pump during use have become a technical problem urgently to be solved in the industry. UTILITY MODEL CONTENTS

[0004] The utility model discloses in order to make up for the insufficient of prior art, provide a LNG booster pump high pressure liquid hydrogen pipeline is with one way right angle joint, solved the problem that the operation space of previous straight through joint is limited when connecting with external pipeline, solved the problem that the check valve in previous straight through joint is directly impacted by high pressure liquid hydrogen and is easy to damage.

[0005] The utility model discloses a technical scheme adopted to solve the above technical problems is:

[0006] A LNG booster pump high pressure liquid hydrogen pipeline is with one way right angle joint, including right angle valve body, the one side of right angle valve body is equipped with liquid inlet passageway, and the other side is equipped with liquid outlet passageway, and liquid inlet passageway is connected with liquid outlet passageway through right angle passageway, the check core is movably installed in liquid outlet passageway, and the one side of check core is used to open or close right angle passageway, and the check core other side's liquid outlet passageway is fixedly installed with valve core, and is equipped with compression spring between valve core and check core.

[0007] The outer end of liquid inlet passageway is threadedly connected with nut joint.

[0008] The end of sealing of check core and right angle passageway cooperation is conical surface, and the conical hole that is matched with conical surface is equipped in right angle passageway.

[0009] The side of check core is equipped with several liquid passageway grooves.

[0010] The check core is made of metal material.

[0011] The valve core and the liquid outlet channel are fixedly connected through threads.

[0012] The side of the valve core is provided with a plurality of liquid discharge holes, and the center of the valve core is provided with a liquid discharge channel.

[0013] The valve core is made of plastic material.

[0014] The utility model discloses the above-mentioned scheme has the following advantages:

[0015] By adopting the right-angle valve body, when the high-pressure liquid hydrogen pipeline is connected with the external pipeline, the direction can be changed, interference between the LNG booster pump is avoided, sufficient operation space is obtained, the pipe connection is more compact, and the risk of liquid hydrogen leakage is avoided; after the high-pressure liquid hydrogen enters, the internal right-angle channel can play a buffering role, direct impact of the high-pressure liquid hydrogen on the check core and the valve core is avoided, a protection role is played, and the service life is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is the sectional view structural schematic diagram of the utility model.

[0017] Fig. 2 It is the structure schematic diagram of the check core of the utility model.

[0018] Fig. 3 It is the structure schematic diagram of the valve core of the utility model.

[0019] In the drawing, 1, right-angle valve body, 2, liquid inlet channel, 3, liquid outlet channel, 4, right-angle channel, 5, check core, 6, valve core, 7, compression spring, 8, nut joint, 9, conical surface, 10, conical hole, 11, liquid passage, 12, liquid discharge hole, 13, liquid discharge channel. DETAILED DESCRIPTION

[0020] To clearly illustrate the technical features of the scheme, the utility model is described in detail below through specific implementation mode and in conjunction with its drawings.

[0021] As shown in the drawing, Figs. 1-3 A one-way right-angle joint for high-pressure liquid hydrogen pipeline of LNG booster pump, including right-angle valve body 1, one side of the right-angle valve body 1 is equipped with liquid inlet channel 2, the other side is equipped with liquid outlet channel 3, liquid inlet channel 2 and liquid outlet channel 3 are connected through right-angle channel 4, the movable check core 5 is installed in the liquid outlet channel 3, one side of the check core 5 is used to open or close right-angle channel 4, the valve core 6 is fixedly installed in the liquid outlet channel 3 of the other side of the check core 5, and the compression spring 7 is arranged between the valve core 6 and the check core 5.

[0022] The outer end of the liquid inlet channel 2 is threadedly connected with a nut joint 8 for connecting with a high-pressure liquid hydrogen pipeline.

[0023] The sealing end of the check core 5 matched with the right-angle channel 4 is a conical surface 9, and the right-angle channel 4 is provided with a conical hole 10 matched with the conical surface 9, so as to facilitate better sealing.

[0024] The side of the check core 5 is provided with a plurality of liquid passing grooves 11, so as to facilitate better passing of liquid hydrogen.

[0025] The check core 5 is made of metal material, and has stronger impact resistance.

[0026] The valve core 6 is fixedly connected with the liquid outlet channel 3 through threads.

[0027] The side of the valve core 6 is provided with a plurality of liquid discharging holes 12, and the center of the valve core 6 is provided with a liquid discharging channel 13, so that the liquid hydrogen in the liquid outlet channel 3 can enter the liquid discharging channel 13 through the liquid discharging holes 12 and then be discharged outward from the liquid discharging channel 13.

[0028] The valve core 6 is made of plastic material, and has better low-temperature resistance, so as to prevent deformation and cause liquid hydrogen leakage.

[0029] Working principle:

[0030] In use, one end of the right-angle valve body 1 is connected with the high-pressure liquid hydrogen pipeline through the nut joint 8, and the other end is connected with an external pipeline through the valve core 6, so that the right-angle valve body 1 can change the direction of the high-pressure liquid hydrogen pipeline when connected with the external pipeline, so as to avoid interference with the LNG booster pump and obtain sufficient operation space. The liquid hydrogen in the high-pressure liquid hydrogen pipeline first enters the liquid inlet channel 2, then is buffered through the right-angle channel 4, then impacts the check core 5, so as to protect the check core 5 to a certain extent. When the pressure of the liquid hydrogen is greater than the pressure of the compression spring 7, the check core 5 is pushed away by the liquid hydrogen, and the liquid hydrogen enters the liquid outlet channel 3, then enters the liquid discharging channel 13 through the liquid discharging holes 12 of the valve core 6, and then is sent to the external pipeline from the liquid discharging channel 13. When the pressure of the liquid hydrogen is less than the pressure of the compression spring 7, the check core 5 can close the right-angle channel 4, so as to play a check role of the liquid hydrogen.

[0031] The above specific embodiments cannot be regarded as a limitation on the protection scope of the utility model, and any alternative improvement or change made by the person skilled in the art to the utility model embodiments falls within the protection scope of the utility model.

[0032] The not detailed parts of the utility model are the known technology of the person skilled in the art.

Claims

1. A one-way right-angle connector for high-pressure liquid hydrogen pipeline of an LNG booster pump, characterized in that: The valve includes a right-angle valve body, with an inlet channel on one side and an outlet channel on the other side. The inlet channel and the outlet channel are connected by the right-angle channel. A check valve core is movably installed in the outlet channel. One side of the check valve core is used to open or close the right-angle channel. A valve core is fixedly installed in the outlet channel on the other side of the check valve core. A compression spring is provided between the valve core and the check valve core.

2. The one-way right-angle connector for high-pressure liquid hydrogen pipeline of LNG booster pump according to claim 1, characterized in that: The outer end of the liquid inlet channel is threaded with a nut connector.

3. A one-way right-angle connector for high-pressure liquid hydrogen pipeline of an LNG booster pump according to claim 1, characterized in that: The end of the check valve core that seals with the right-angle channel is a tapered surface, and the right-angle channel has a tapered hole that matches the tapered surface.

4. A one-way right-angle connector for high-pressure liquid hydrogen pipeline of an LNG booster pump according to claim 1, characterized in that: The side of the check valve core is provided with several fluid passage grooves.

5. A one-way right-angle connector for high-pressure liquid hydrogen pipeline of an LNG booster pump according to claim 1, characterized in that: The check valve core is made of metal.

6. A one-way right-angle connector for high-pressure liquid hydrogen pipeline of an LNG booster pump according to claim 1, characterized in that: The valve core and the liquid outlet channel are fixedly connected by threads.

7. A one-way right-angle connector for high-pressure liquid hydrogen pipeline of an LNG booster pump according to claim 1, characterized in that: The valve core has several drainage holes on its side and a drainage channel in its center.

8. A one-way right-angle connector for high-pressure liquid hydrogen pipeline of an LNG booster pump according to claim 1, characterized in that: The valve core is made of plastic material.

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