CN111043523A

CN111043523A - Integrated hydrogenation port

Info

Publication number: CN111043523A
Application number: CN201911164048.5A
Authority: CN
Inventors: 王晨生; 顾成杰; 林垚; 刘玉珑; 刘绍军
Original assignee: Shanghai Sunwise Energy System Co ltd
Current assignee: Shanghai Sunwise Energy System Co ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-04-21

Abstract

The invention discloses an integrated hydrogenation port, which relates to the field of hydrogen supply systems and comprises a hydrogenation port, a pressure relief valve, a temperature sensor and a low-voltage power supply, wherein the side wall of the hydrogenation port is provided with the pressure relief port, one end of the pressure relief valve is inserted into the pressure relief port, the pressure relief valve is communicated with a first gas channel in the hydrogenation port, the side wall of the pressure relief valve is provided with an installation port, the temperature sensor is installed in the installation port, the lower end of the temperature sensor extends into a second gas channel in the pressure relief valve, and the low-voltage power supply supplies power for. According to the integrated hydrogenation port, the temperature sensor acquires the temperature in the hydrogenation port, active and passive double safety protection of the problem of excess temperature of an air source is realized under the environment of an ultrahigh pressure hydrogen medium of 70MPa, and when the ultrahigh pressure hydrogen medium is filled in an overpressure manner, the pressure release valve can immediately jump to discharge redundant gas, so that various overpressure accidents are avoided; the hydrogenation mouth has solved the hydrogenation mouth and under the superhigh pressure hydrogen medium environment, takes place the potential safety hazard problem of superpressure filling and overtemperature.

Description

Integrated hydrogenation port

Technical Field

The invention relates to the technical field of hydrogen supply systems, in particular to an integrated hydrogenation port.

Background

The hydrogenation port is used for hydrogen fuel cell vehicles. The hydrogenation port can be connected with a hydrogenation gun, and then high-pressure hydrogen is introduced into the hydrogenation port from the hydrogenation gun and then enters a hydrogen storage system.

In the hydrogenation process, due to the coke soup effect, a large temperature rise can be generated instantly during hydrogen filling, so that a gas source needs to be pre-cooled to 40 ℃ below zero during 70MPa hydrogen (ultrahigh pressure hydrogen medium) filling. The hydrogen has the characteristics of flammability, explosiveness, large explosion limit range and the like, and the ultrahigh pressure 70MPa hydrogen is extremely cold to extremely hot in a very short time, so that the sealing performance and the safety and the reliability of the hydrogenation port are greatly tested.

The conventional fuel automobile judges whether filling is finished or not through the liquid level of fuel, and the filling of the fuel cell automobile can be judged only from pressure. The existing filling technology in the field is to collect pressure readings from a hydrogenation machine and stop hydrogenation immediately after the pressure is full. The hydrogenation gun can only open the one-way valve inside the hydrogenation port in a pressure difference mode according to national standards, so that the pressure of a gas source in a front-end filling pipeline is greater than that of a rear-end hydrogen storage part, the pressure in the hydrogenation machine needs to exceed 70MPa for the rear-end hydrogen storage part to reach 70MPa, once the control of the hydrogenation machine fails, a gas cylinder and a pipeline system of a fuel cell automobile can be filled with overpressure, and great safety risk is achieved. In addition, the hydrogenation port is very easy to generate an overtemperature phenomenon in an ultrahigh pressure medium environment, and has great potential safety hazard.

Disclosure of Invention

In view of the above problems, an object of the present invention is to provide an integrated hydrogenation port, which solves the technical problems that the cylinder and the pipeline system of a fuel cell vehicle are filled with overpressure due to failure of the control of the hydrogenation port, and the over-temperature inside the hydrogenation port.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides an integrated form hydrogenation mouth, includes hydrogenation mouth, relief valve, temperature sensor and low voltage power supply, wherein, the pressure release mouth has been seted up on the lateral wall of hydrogenation mouth, the one end of relief valve is inserted the pressure release mouth, the relief valve with the intraoral gas passage of hydrogenation is linked together, the relief valve with it is sealed to form through O shape circle between the pressure release mouth, the installing port has been seted up on the lateral wall of relief valve, temperature sensor installs in the installing port, temperature sensor's lower extreme stretches into in the gas passage two in the relief valve, low voltage power supply installs in the car, low voltage power supply is located one side of hydrogenation mouth, low voltage power supply does the temperature sensor power supply.

The invention is further configured to: the hydrogenation port comprises an upper valve body and a lower valve body, the lower valve body is in threaded connection with the lower end of the upper valve body, the first gas channel and the first pressure relief port are arranged in the lower valve body, the first pressure relief port is located on the side wall, away from one end of the upper valve body, of the lower valve body, and the first pressure relief port is communicated with the first gas channel.

The invention is further configured to: the pressure relief valve includes:

one end of the sealing shell is connected in the pressure relief opening in a threaded manner, the sealing shell is of a hollow structure with openings at two ends, the gas channel II is formed in the sealing shell, and the mounting opening is formed in the side wall of the sealing shell;

the pressure relief valve body is in threaded connection with the inside of the sealing shell, and an annular step is arranged on the upper side inside the pressure relief valve body;

the valve core is arranged in the pressure release valve body, a sealing cap is arranged at the upper end of the valve core, the lower surface of the sealing cap is attached to the upper surface of the annular step, and a base is fixed at the lower end of the valve core;

and the reset spring is sleeved on the valve core, and two ends of the reset spring are respectively connected with the annular step and the base.

The invention is further configured to: the temperature sensor is arranged in a metal shell, and the metal shell is arranged in the mounting hole.

The invention is further configured to: the end of the sealing shell, which is far away from the pressure relief opening, is provided with a connector, and the connector is communicated with a discharge pipeline.

The invention is further configured to: and a seal is formed between the seal shell and the mounting port through an O-shaped ring.

The invention is further configured to: the temperature sensor is connected with the control system and used for collecting the temperature value in the gas channel II and sending the temperature value to the control system.

Due to the adoption of the technology, compared with the prior art, the invention has the following positive effects:

(1) according to the integrated hydrogenation port, the temperature sensor is integrated in the hydrogenation port, so that the temperature is more accurately and rapidly collected, and the phenomenon of temperature rise delay caused by heat conduction is avoided.

(2) According to the integrated internally-arranged pressure release valve for the hydrogenation port, once excessive gas filling occurs, the pressure release valve can jump immediately to discharge excessive gas, and various overpressure accidents are avoided.

(3) The temperature sensor of the integrated hydrogenation port collects the temperature in the hydrogenation port in real time, the control system judges the temperature value, and then the hydrogenation machine is controlled to be filled and a user or a hydrogenation station worker is informed to carry out emergency treatment, so that active and passive dual safety protection of the problem of excess temperature of an air source is realized.

(4) The temperature sensor of the integrated hydrogenation port is powered by a set of independent low-voltage power supply, can continuously and stably provide working voltage for the sensor, and avoids the influence of voltage fluctuation and current overload of an automobile storage battery on the service life and the measurement precision of the sensor.

Drawings

FIG. 1 is a cross-sectional view of an integrated hydrogenation port of the present invention;

fig. 2 is a schematic view of the installation structure of the pressure relief valve and the temperature sensor of the present invention.

In the drawings: 1. a hydrogenation port; 11. an upper valve body; 12. a lower valve body; 121. a first gas channel; 2. a pressure relief valve; 21. sealing the housing; 211. a second gas channel; 212. an O-shaped ring; 213. an interface; 22. a pressure relief valve body; 221. an annular step; 23. a valve core; 231. a sealing cap; 24. a base; 25. a return spring; 3. a temperature sensor; 31. a metal housing.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings and specific embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Referring to fig. 1 and fig. 2, an integrated hydrogenation port according to an embodiment of the present invention includes a hydrogenation port 1, a pressure relief valve 2, a temperature sensor 3, and a low-voltage power supply (not shown in the drawings).

Wherein, the pressure release mouth has been seted up on the lateral wall of hydrogenation mouth 1, the one end of relief valve 2 is inserted in the pressure release mouth, be equipped with gas channel 121 in the hydrogenation mouth 1, relief valve 2 is linked together with gas channel 121 in the hydrogenation mouth 1, the installing port has been seted up on the lateral wall of relief valve 2, temperature sensor 3 installs in the installing port, temperature sensor 3's lower extreme stretches into in the gas channel two 211 in the relief valve 2, low voltage power source sets up in the car, low voltage power source is located one side of hydrogenation mouth 1, low voltage power source is connected with the temperature sensor electricity, low voltage power source supplies power for temperature sensor 3.

Further, the temperature sensor 3 monitors the temperature of the gas inside the hydrogenation port 1 in real time and uploads the temperature to a finished automobile control system (not shown in the figure) in real time, a temperature value is preset in the control system, if the temperature in the hydrogenation port 1 is larger than the preset temperature value, when the alarm temperature is reached, the finished automobile control system uploads an instruction of stopping hydrogenation to the hydrogenation machine through infrared communication, so that the hydrogenation machine automatically stops hydrogen filling, meanwhile, the automobile gives out an audible and visual alarm to inform a user or a hydrogenation station worker of emergency treatment, and the hydrogen adding device has active and passive dual safety protection.

If the hydrogenation machine breaks down or other reasons, when the gas cylinder is excessively filled, the pressure release valve 2 can act immediately, and the pressure release valve 2 automatically discharges redundant gas, so that the potential safety hazard caused by overlarge pressure is avoided, and the safety of the whole hydrogenation device and the vehicle-mounted equipment is effectively ensured.

Referring to fig. 1, the hydrogenation port 1 includes an upper valve body 11 and a lower valve body 12, the lower valve body 12 is connected to the lower end of the upper valve body 11 through a thread, a first gas passage 121 and a pressure relief port are both disposed in the lower valve body 12, the pressure relief port is located on the side wall of one end of the lower valve body 12 far away from the upper valve body 11, and the pressure relief port is communicated with the first gas passage 121.

Further, referring to fig. 2, the pressure relief valve 2 includes: one end of the sealing shell 21 is connected in the pressure relief opening in a threaded manner, the sealing shell 21 is of a hollow structure with openings at two ends, a gas channel II 211 is formed in the sealing shell 21, and a mounting opening is formed in the side wall of the sealing shell 21; the pressure relief valve body 22 is connected in the sealing shell 21 in a threaded mode, and an annular step 221 is formed in the upper side inside the pressure relief valve body 22; the pressure relief valve comprises a valve core 23, wherein the valve core 23 is arranged in a pressure relief valve body 22, a sealing cap 231 is arranged at the upper end of the valve core 23, the lower surface of the sealing cap 231 is attached to the upper surface of an annular step 221, and a base 24 is fixed at the lower end of the valve core 23; the return spring 25 is sleeved on the valve core 23, and two ends of the return spring 25 are respectively connected with the annular step 221 and the base 24.

Further optimizing the above embodiment, the temperature sensor 3 is disposed in the metal housing 31, and the metal housing 31 is mounted in the mounting port.

Furthermore, a port 213 is disposed at an end of the sealing housing 21 away from the pressure relief port, the port 213 is connected to a discharge pipeline (not shown), and the excess gas is discharged through the discharge pipeline.

It should also be noted that the terms "upper" and "lower" as used herein are defined with reference to the relative positions of the components in the drawings of the present invention only for the clarity and convenience of the description, and it should be understood that the terms should not be construed as limiting the scope of the present application.

Further optimize above-mentioned technical scheme, sealed through O shape circle 212 formation between sealed casing 21 and the installing port, sealed more reliable.

According to the invention, the temperature sensor 3 is integrated on the hydrogenation port 1, so that the real-time temperature change of internal gas can be detected, and the temperature rise delay phenomenon in the detection process is reduced to the maximum extent. The integrated hydrogenation port 1 is applied to the filling of ultrahigh pressure gas, the internal gas medium has certain sensitivity to temperature rise, and the pressure of the gas can be further improved by the temperature rise. Through the real-time collection of the temperature data in the hydrogenation port 1, the hydrogenation machine can adjust the outlet flow in a targeted manner, so that the gas pressure in the filling pipeline is stabilized within a reasonable range, and the whole filling system is safer and more reliable. The temperature sensor 3 is positioned at a position close to the outlet end of the hydrogenation port 1 and closer to the gas cylinder, so that the measured temperature data is closer to the actual temperature change state of the internal gas.

The temperature sensor 3 is powered by a set of independent low-voltage power supply, can continuously and stably provide working voltage for the temperature sensor 3, and avoids the influence of voltage fluctuation and current overload of an automobile storage battery on the service life of the temperature sensor 3 and the influence of measurement precision. The metal shell 31 ensures the structural strength of the temperature sensor 3, and simultaneously utilizes the principle that metal is easy to conduct electricity, so that static electricity can be guided through the hydrogenation port 1, and the static risk is eliminated.

The existing hydrogenation port does not have a pressure monitoring function, and the pressure reading is acquired through a pressure sensor in the hydrogenation machine during hydrogenation, so that the gas pressure in the hydrogenation port 1 and a pipeline at the rear end of the hydrogenation port are indirectly determined, and the pressure in the hydrogenation port 1 cannot be directly acquired. Once the hydrogenation machine breaks down, the whole filling system is in a pressure out-of-control state, the situation that the gas cylinder is excessively filled is easily caused, and great potential safety hazards are caused. A pressure release valve 2 is arranged in the hydrogenation port 1, and once excessive filling occurs, the pressure release valve 2 can jump to discharge excessive gas immediately, so that various overpressure accidents are avoided. The integrated hydrogenation port is composed of a mechanical structure, can adapt to vehicle-mounted complex working conditions, and can still reliably work under severe conditions.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An integrated hydrogenation port, comprising: the device comprises a hydrogenation port (1), a pressure release valve (2), a temperature sensor (3) and a low-voltage power supply;

the utility model discloses a hydrogenation mouth, including hydrogenation mouth (1), relief valve (2), temperature sensor (3) and temperature sensor (3), the pressure release mouth has been seted up on the lateral wall of hydrogenation mouth (1), the one end of relief valve (2) is inserted the pressure release mouth, relief valve (2) with gas channel (121) in hydrogenation mouth (1) are linked together, the installing port has been seted up on the lateral wall of relief valve (2), temperature sensor (3) are installed in the installing port, the lower extreme of temperature sensor (3) stretches into in the gas channel two (211) in relief valve (2), the low voltage power supply is installed one side of hydrogenation mouth (1), the low voltage power supply does temperature sensor (3) power.

2. The integrated hydrogenation port according to claim 1, wherein the hydrogenation port (1) comprises an upper valve body (11) and a lower valve body (12), the lower valve body (12) is screwed to the lower end of the upper valve body (11), the first gas passage (121) and the pressure relief port are both arranged in the lower valve body (12), the pressure relief port is located on the side wall of one end of the lower valve body (12) far away from the upper valve body (11), and the pressure relief port is communicated with the first gas passage (121).

3. The integrated hydrogenation port according to claim 1, wherein the pressure relief valve (2) comprises:

one end of the sealing shell (21) is connected in the pressure relief opening in a threaded manner, the sealing shell (21) is of a hollow structure with openings at two ends, a second gas channel (211) is formed in the sealing shell (21), and the side wall of the sealing shell (21) is provided with the mounting opening;

the pressure relief valve body (22), the pressure relief valve body (22) is connected in the sealed shell (21) in a threaded mode, and an annular step (221) is arranged on the upper side inside the pressure relief valve body (22);

the valve core (23) is arranged in the pressure relief valve body (22), a sealing cap (231) is arranged at the upper end of the valve core (23), the lower surface of the sealing cap (231) is attached to the upper surface of the annular step (221), and a base (24) is fixed at the lower end of the valve core (23);

the return spring (25) is sleeved on the valve core (23), and two ends of the return spring (25) are respectively connected with the annular step (221) and the base (24).

4. The integrated hydrogenation port according to claim 3, wherein the temperature sensor (3) is disposed within a metal housing (31), the metal housing (31) being mounted within the mounting port.

5. The integrated hydrogenation port according to claim 3, wherein an interface (213) is disposed at an end of the sealed housing (21) away from the pressure relief port, and the interface (213) is communicated with a relief pipeline.

6. The integrated hydrogenation port of claim 3, wherein said seal housing (21) and said mounting port are sealed by an O-ring (212).

7. The integrated hydrogenation port according to claim 3, wherein the temperature sensor (3) is connected to a control system, and the temperature sensor (3) is configured to collect a temperature value in the second gas channel (211) and send the temperature value to the control system.