CN219198885U

CN219198885U - Combined pressure reducing valve

Info

Publication number: CN219198885U
Application number: CN202320061583.3U
Authority: CN
Inventors: 何湘; 孙吉党
Original assignee: Suzhou Qipan Technology Co ltd
Current assignee: Suzhou Qipan Technology Co ltd
Priority date: 2023-01-10
Filing date: 2023-01-10
Publication date: 2023-06-16
Anticipated expiration: 2033-01-10

Abstract

The utility model belongs to the technical field of new energy, and particularly relates to a combined pressure reducing valve. The pressure meter comprises a shell, wherein the shell is provided with a protruding part, a plurality of cavities are formed in the side face of the shell, an inflation valve assembly is connected into one cavity of the shell, a pressure reducing valve assembly is connected with the top of the shell, a TPRD assembly is connected into one cavity of the shell, a stop valve assembly is connected into one cavity of the shell, a relief valve assembly is connected into one cavity of the shell, a PU pipe is quickly inserted into one cavity of the shell through threaded connection, a filter is fixed into the cavity of the protruding part of the shell, a pressure sensor is connected with the shell, and a pressure meter is connected with the shell. The utility model has the beneficial effects that: and when the pressure of the hydrogen at the outlet exceeds a design value, the pressure of the hydrogen at the outlet is automatically released by overpressure, so that the use safety is ensured.

Description

Combined pressure reducing valve

Technical Field

The utility model belongs to the technical field of new energy, and particularly relates to a combined pressure reducing valve.

Background

The hydrogen energy is a recognized clean energy, and has the advantages of high energy density, about 3 times of the heat value of the hydrogen as compared with petroleum, zero pollution, water as a product, capability of decomposing hydrogen again, and rich reserve and can be developed from seawater. As 'electric energy replacement', the application range of the hydrogen energy can cover the fields of transportation, industrial production, energy transfer, power grid energy storage allocation and the like, so that the hydrogen energy industry is expected to become an energy transformation type prop industry. In recent years, with the transformation of energy and the development of low carbon as global consensus and the gradual maturation of hydrogen energy technology, hydrogen energy is developing unprecedented. In the hydrogen energy industry chain, a pressure reducing valve for hydrogen is used as one of key parts in the industry chain, and the domestic development speed is slower due to higher technical content. With the development of hydrogen energy, hydrogen energy locomotives, motorcycles, bicycles, mobile power supplies and the like have been produced and put into use gradually, and a hydrogen pressure reducing valve with low outlet pressure and small flow rate matched with the hydrogen energy locomotive, motorcycle, bicycle, mobile power supply and the like is difficult to meet. The existing valve is multifunctional and single, various pipelines and connectors are needed to be connected, the whole system is high in cost, the cost of products such as hydrogen energy locomotives, motorcycles, bicycles and mobile power supplies is not easy to control, meanwhile, the risk of hydrogen leakage is increased due to excessive pipeline connectors, and the valves with the single functions are difficult to reasonably arrange in a small space. Along with market development, industry fields are continuously subdivided, and hydrogen pressure reducing valves with different functions are required to be matched with the hydrogen pressure reducing valves, so that market development requirements are met.

Disclosure of Invention

The utility model aims to provide a combined pressure reducing valve which is mainly used for a hydrogen combined pressure reducing valve with low outlet pressure and smaller flow rate required by locomotives, motorcycles, bicycles, mobile power supplies and the like in the field of hydrogen energy, products with single functions such as an inflation inlet, a filter, a TPRD, a relief valve, a stop valve, a pressure gauge, a pressure sensor, a pressure reducing valve and the like which are necessary for a system are all integrated in a shell, pipelines and joints in the existing system are all omitted, the system cost and leakage risk are greatly reduced, meanwhile, the defect of insufficient available space of the system is solved, and the valves with single functions cannot be reasonably arranged.

The technical scheme of the utility model is as follows: a combined pressure reducing valve comprises a shell, wherein the shell is provided with a protruding part, a plurality of cavities are formed in the side face of the shell, an inflation valve assembly is connected into one cavity of the shell, the pressure reducing valve assembly is connected with the top of the shell, a TPRD assembly is connected into one cavity of the shell, a stop valve assembly is connected into one cavity of the shell, a relief valve assembly is connected into one cavity of the shell, a PU pipe is quickly inserted into one cavity of the shell through threaded connection, a filter is fixed into the cavity of the protruding part of the shell, a pressure sensor is connected with the shell, and a pressure gauge is connected with the shell.

Preferably, the inflation valve assembly is sealed with the housing by an O-ring.

Preferably, a second O-shaped ring is arranged at the contact position of the pressure reducing valve assembly and the shell.

Preferably, a first O-shaped ring is arranged at the contact position of the bleeder valve assembly and the cavity of the shell.

Preferably, the filter is a 10 μm metal sintered filter.

Preferably, the filter is secured to the housing within the cavity of the projection by a compression nut.

Preferably, the protruding part of the shell is sleeved with a third O-shaped ring.

Preferably, the pressure sensor is sealed by a fourth O-ring.

Preferably, the pressure gauge is connected with the shell and is sealed through a fifth O-ring.

Preferably, a channel for communicating the filter with the pressure reducing valve assembly is formed in the shell.

The utility model has the beneficial effects that: 1. the outlet of the pressure reducing valve is integrated with a relief valve, and when the pressure of the outlet hydrogen exceeds a design value, the overpressure is automatically relieved, so that the use safety is ensured; 2. when the temperature exceeds 110+/-5 ℃, the integrated TPRD component is automatically opened to emergently discharge the hydrogen in the hydrogen storage cylinder, so that the risk of explosion of the hydrogen storage cylinder caused by pressure rise due to overhigh temperature is prevented; 3. the inflation valve component integrates the check valve, and after inflation is finished, the reverse interception function of the check valve is utilized to prevent hydrogen in the hydrogen storage cylinder from flowing out.

Drawings

FIG. 1 is a schematic diagram of a combined pressure reducing valve according to the present utility model;

FIG. 2 is a schematic view in the direction A-A of FIG. 1;

FIG. 3 is a schematic view in the B-B direction of FIG. 2;

fig. 4 is a schematic view in the C-C direction in fig. 1.

In the figure: 1 casing, 2 charging valve components, 3 relief valve components, 4TPRD components, 5 stop valve components, 6 relief valve components, 7PU pipe quick-plug, 8 filter, 9 gland nut, 10 first O-shaped ring, 11 second O-shaped ring, 12 third O-shaped ring, 13 fourth O-shaped ring, 14 pressure sensor, 15 manometer, 16 fifth O-shaped ring, 17 protruding part, 18 passageway, 21 charging valve case, 22 charging valve spring.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, in the description of the present utility model, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, connected via an intermediary, or connected by communication between two elements. The above terms are understood by those of ordinary skill in the art as the case may be.

The utility model provides a combined pressure reducing valve which is applied to a 35MPa environment and comprises the following functional components: the inflation inlet, the 10 mu m filter, the TPRD, the relief valve, the stop valve, the pressure gauge, the pressure sensor, the pressure reducing valve and the like.

1-4, a combined pressure reducing valve comprises a shell 1, an inflation valve assembly 2, a pressure reducing valve assembly 3, a TPRD assembly 4, a stop valve assembly 5, a pressure reducing valve assembly 6, a PU pipe quick plug 7, a filter 8, a compression nut 9, a first O-shaped ring 10, a second O-shaped ring 11, a third O-shaped ring 12, a fourth O-shaped ring 13, a pressure sensor 14, a pressure gauge 15 and a fifth O-shaped ring 16, wherein the shell 1 is formed by processing 6061-T6 materials through a machine tool, the shell 1 is provided with a protruding part 17, the side surface of the shell 1 is provided with a plurality of cavities, the inflation valve assembly 2 is connected into one cavity of the shell 1 through threads, the inflation valve assembly 2 and the shell 1 are sealed through the O-shaped rings, the inflation valve assembly 2 can inflate a hydrogen storage cylinder, the pressure reducing valve assembly 3 is connected with the top of the shell 1 through screws, the contact part of the pressure reducing valve assembly 3 and the shell 1 is provided with the second O-shaped ring 11, the pressure reducing valve assembly 3 can supply hydrogen with 35MPa pressure in the hydrogen storage cylinder to 50+/-10 KPa to the downstream hydrogen fuel cell stack, as shown in fig. 4, the TPRD assembly 4 is connected into a cavity of the shell 1 through threads, when the ambient temperature exceeds 110+/-5 ℃, the hydrogen in the hydrogen storage cylinder can be automatically discharged, as shown in fig. 3, the stop valve assembly 5 is connected into a cavity of the shell 1 through threads for controlling the outflow of the outlet gas of the pressure reducing valve through manual opening and closing, the discharge valve assembly 6 is connected into a cavity of the shell 1 through threads, a first O-shaped ring 10 is arranged at the contact part of the outlet gas pressure of the discharge valve assembly 6 and the cavity of the shell 1, when the outlet gas pressure of the pressure reducing valve exceeds a set value, the pressure is automatically opened, the PU pipe is quickly inserted 7 through threads into the cavity of the shell 1, the PU hose can be connected, the pipe connection is convenient, the filter 8 is a 10 mu m metal sintering filter, the filter is fixed into a cavity of the protruding part 17 of the shell 1 through the compression nut 9, impurities inside the gas cylinder can be filtered, the third O-shaped ring 12 is sleeved outside the protruding part 17 of the shell 1, the pressure sensor 14 monitors the gas pressure inside the hydrogen storage cylinder, signals can be transmitted with the control system in real time, the pressure sensor is connected with the shell 1 through threads, the pressure meter 15 monitors the gas pressure inside the hydrogen storage cylinder and is connected with the shell 1 through threads, the fifth O-shaped ring 16 is used for sealing, and the gas pressure inside the hydrogen storage cylinder can be visually observed. As shown in fig. 2, a channel 18 for communicating the filter 8 with the pressure reducing valve assembly 3 is arranged in the shell 1, the inflation valve assembly 2 is connected into a cavity of the shell 1 through threads, the channel 18 is communicated with the cavity, an inflation valve core 21 is arranged in the cavity, an inflation valve spring 22 is sleeved in the inflation valve core 2, and the inflation valve core 21 is in contact with the end part of the inflation valve assembly 2.

In the actual use process, the valve is required to be visually observed in terms of hydrogen storage pressure by a pressure gauge, the valve is required to be in terms of signal transmission by a pressure sensor and a control system, the TPRD function is required to be used as a temperature pressure relief device, when the temperature reaches 110+/-5 ℃, the overpressure relief device is required to be automatically released at the outlet end of the gas valve inside the hydrogen storage cylinder, the pressure relief is carried out when the valve is depressurized and fails, the downstream fuel cell and other equipment valves are protected to be required to be provided with inflation ports, and the inside of the hydrogen storage cylinder is conveniently inflated.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. A combination relief valve, characterized in that: the pressure meter comprises a shell, wherein the shell is provided with a protruding part, a plurality of cavities are formed in the side face of the shell, an inflation valve assembly is connected into one cavity of the shell, a pressure reducing valve assembly is connected with the top of the shell, a TPRD assembly is connected into one cavity of the shell, a stop valve assembly is connected into one cavity of the shell, a relief valve assembly is connected into one cavity of the shell, a PU pipe is quickly inserted into one cavity of the shell through threaded connection, a filter is fixed into the cavity of the protruding part of the shell, a pressure sensor is connected with the shell, and a pressure meter is connected with the shell.

2. A combination pressure relief valve as defined in claim 1, wherein: the inflation valve assembly is sealed with the shell through an O-shaped ring.

3. A combination pressure relief valve as defined in claim 1, wherein: the contact part of the pressure reducing valve component and the shell is provided with a second O-shaped ring.

4. A combination pressure relief valve as defined in claim 1, wherein: the first O-shaped ring is arranged at the contact position of the bleeder valve component and the cavity of the shell.

5. A combination pressure relief valve as defined in claim 1, wherein: the filter is a 10 mu m metal sintered filter.

6. A combination relief valve as defined in claim 5, wherein: the filter is secured to the housing within the cavity of the projection by a compression nut.

7. A combination pressure relief valve as defined in claim 1, wherein: the protruding part of the shell is sleeved with a third O-shaped ring.

8. A combination pressure relief valve as defined in claim 1, wherein: the pressure sensor is sealed through a fourth O-shaped ring.

9. A combination pressure relief valve as defined in claim 1, wherein: the pressure gauge is connected with the shell and is sealed through a fifth O-shaped ring.

10. A combination pressure relief valve as defined in claim 1, wherein: the shell is internally provided with a channel for communicating the filter and the pressure reducing valve component.