Ultrahigh pressure filter for gas outlet end of hydrogen compressor

Abstract

The utility model discloses an ultrahigh pressure filter for a gas outlet end of a hydrogen compressor, which relates to the technical field of hydrogen preparation and filtration and comprises a filter body, a gas inlet and a gas outlet are arranged on the filter body, a filter chamber is arranged in the filter body, and a sintered mesh filter element is arranged in the filter chamber. The sintering net filter element part divides the filter chamber into an outer filter chamber and an inner filter chamber, the air enters the inner filter chamber from the outer filter chamber to realize filtration, the outer filter chamber is communicated with the air inlet, the inner filter chamber is communicated with the air outlet, and the air is filtered by the sintering net filter element part through the built-in sintering net filter element part. The ultrahigh pressure filter can effectively filter out small particles, impurities and pollutants in hydrogen at the gas outlet end of the hydrogen compressor, and ensures that the hydrogen discharged from the gas outlet reaches the high-purity standard.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen preparation and filtration, in particular to an ultra-high pressure filter for a gas outlet end of a hydrogen compressor. Background Art

[0002] In the field of hydrogen preparation and application, hydrogen compressors are key equipment, and their performance and stability directly affect the production efficiency of hydrogen and the quality of the final product. With the rapid development of the hydrogen energy industry, the requirements for hydrogen purity are also increasing. However, at the outlet of the hydrogen compressor, due to the tiny particles, impurities and pollutants that hydrogen may carry during the compression process, such as oil mist, water mist, particulate dust, etc., if these impurities are directly discharged without effective filtration, it will seriously affect the purity of hydrogen and the safety of subsequent applications. Traditional hydrogen filters often have problems such as insufficient filtration efficiency, easy clogging, and short life when dealing with high pressure, large flow and high purity requirements. Especially in ultra-high pressure environments, the stability and reliability of the filter are facing severe challenges. Therefore, it is particularly important to develop a filter that can efficiently filter tiny particles, impurities and pollutants in hydrogen under ultra-high pressure conditions. The research and development and application of this filter will help improve the efficiency and safety of hydrogen preparation and promote the further development of the hydrogen energy industry. Utility Model Content

[0003] The purpose of the utility model is to overcome the problems existing in the prior art. Based on the above background, sintered mesh filter elements have been widely used in the field of gas filtration due to their unique pore structure, excellent filtration efficiency and high pressure resistance. They are made through a precise sintering process and have the characteristics of uniform pore size, high filtration accuracy, good mechanical strength, etc. They can effectively filter out tiny particles and pollutants in the gas. The present invention discloses an ultra-high pressure filter for the outlet of a hydrogen compressor, which aims to achieve efficient filtration of hydrogen at the outlet of the hydrogen compressor through a built-in sintered mesh filter element, ensuring that the hydrogen discharged from the exhaust port reaches a high purity standard and meets the strict requirements of the hydrogen energy industry for hydrogen purity.

[0004] The utility model is realized through the following technical scheme: an ultra-high pressure filter for an outlet end of a hydrogen compressor, comprising a filter body, the filter body being provided with an air inlet and an air outlet, the filter body being provided with a filter chamber, the filter chamber being provided with a sintered mesh filter element, the sintered mesh filter element dividing the filter chamber into an outer filter chamber and an inner filter chamber, filtering is performed by entering the inner filter chamber from the outer filter chamber, the outer filter chamber is communicated with the air inlet, and the inner filter chamber is communicated with the air outlet.

[0005] In order to further optimize the utility model, the following technical solutions can be preferably used:

[0006] Preferably, a slag discharge port is also provided at the bottom of the filter body, the slag discharge port is connected to the bottom of the filter outer chamber, and a valve is provided at the slag discharge port; by providing a slag discharge port at the bottom of the filter body and equipping it with a valve, impurities and particulate matter accumulated during the filtration process can be conveniently discharged, thereby avoiding filter blockage and extending the service life of the filter. At the same time, the setting of the valve makes the slag discharge operation more flexible and safe, and improves maintenance efficiency.

[0007] Preferably, the filter body includes an upper shell and a lower shell, the upper shell is arranged on the top of the lower shell, the sintered mesh filter element is arranged in the lower shell, the cross-section of the upper shell is T-shaped, and a connecting portion is arranged at the bottom of the upper shell, the connecting portion extends into the lower shell and is threadedly matched with the inner wall of the lower shell; the filter body is designed as a split structure of an upper shell and a lower shell, and is connected by threaded matching, which is not only convenient for installation and disassembly, but also convenient for cleaning and maintenance of the inside of the filter. In addition, this design also improves the sealing performance of the filter, prevents hydrogen leakage, and ensures the filtering effect.

[0008] Preferably, a top sealing structure and a side sealing structure are provided between the upper shell and the lower shell. The top sealing structure includes a sealing member provided at the top joint surface between the upper shell and the lower shell, and the side sealing structure includes an annular sealing member coaxially provided on the outer side wall of the bottom of the connecting portion. The provision of the top sealing structure and the side sealing structure further enhances the sealing performance of the filter. The top sealing structure ensures the tight connection between the upper shell and the lower shell through the sealing member, thereby preventing gas leakage; the side sealing structure ensures the tight fit between the connecting portion and the inner wall of the lower shell through the annular sealing member, thereby further improving the sealing effect. This double sealing design ensures the stable operation of the filter under high pressure.

[0009] Preferably, the air inlet and the air outlet are symmetrically arranged on both sides of the top of the upper shell, and the upper shell is provided with an air inlet channel and an air outlet channel, one end of the air inlet channel is connected to the air inlet and the other end is connected to the filter outer chamber, and one end of the air outlet channel is connected to the air outlet and the other end is connected to the filter inner chamber; the above design is not only beautiful and generous, but also makes the gas flow smoother. The design of the air inlet channel and the air outlet channel allows hydrogen to smoothly enter the filter outer chamber and be discharged after being filtered by the sintered mesh filter element, ensuring the filtering efficiency and filtering effect. At the same time, the air outlet channel is arranged in the connecting part and is connected to the air outlet position at the top of the sintered mesh filter element, which reduces the resistance of gas flow and improves the filtering efficiency.

[0010] Preferably, a support platform is provided in the filter chamber at the bottom of the sintered mesh filter element, the connection part is sealed and connected to the top of the sintered mesh filter element, and the air outlet channel is provided in the connection part and communicated with the air outlet position at the top of the sintered mesh filter element; the sintered mesh filter element can be stably supported to prevent it from being deformed or damaged under high pressure environment, and at the same time, the support platform also plays a role in dispersing pressure, thereby extending the service life of the sintered mesh filter element. This design makes the filter more stable and reliable under high pressure environment.

[0011] Preferably, the filter body and the sintered mesh filter element are both made of hydrogen embrittlement-resistant material, which effectively resists the material embrittlement phenomenon that may occur in a hydrogen environment, prolongs the service life of the equipment, and improves the safety and stability of the equipment.

[0012] The utility model has the following effects:

[0013] 1. High-efficiency filtration performance: Through the built-in sintered mesh filter element, the filter can effectively filter out tiny particles, impurities and pollutants in the hydrogen, ensuring that the hydrogen discharged from the exhaust port meets high purity standards. The sintered mesh filter element, with its unique pore structure and excellent filtration efficiency, provides reliable protection for the subsequent application of hydrogen.

[0014] 2. Compact structure and reasonable design: The air inlet, exhaust port and internal filter chamber on the filter body are reasonably arranged, so that hydrogen can smoothly enter the filter outer chamber, pass through the sintered mesh filter element, enter the filter inner chamber and finally be discharged from the exhaust port. This design not only improves the filtration efficiency, but also makes the entire filter compact and easy to install and maintain.

[0015] 3. High-pressure resistance: Since the filter is specially designed for the outlet of a hydrogen compressor, it has excellent high-pressure resistance. Under high-pressure conditions, the filter body and its internal components can maintain stable operation without leakage or damage, thereby ensuring the safe transportation and use of hydrogen.

[0016] 4. Environmental protection and energy saving: Efficient filtering performance means that fewer impurities and pollutants are discharged into the environment, thus helping to reduce environmental pollution. At the same time, pure hydrogen can produce higher energy utilization in combustion or chemical reactions, which helps to achieve the goal of energy conservation and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the ultra-high pressure filter;

[0018] Figure 2 Schematic diagram of the internal structure of the ultra-high pressure filter;

[0019] Figure 3It is a schematic diagram of the structure of a sintered mesh filter element.

[0020] Among them: 1-filter body; 2-upper shell; 3-lower shell; 4-air inlet; 5-air inlet channel; 6-exhaust port; 7-air outlet channel; 8-sintered mesh filter element; 9-filter outer chamber; 10-filter inner chamber; 11-slag discharge port; 12-valve; 13-connecting part; 14-top sealing structure; 15-side sealing structure; 16-external mesh protection layer; 17-filter element structure layer. DETAILED DESCRIPTION

[0021] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] The following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the described embodiments are only part of the utility model embodiments, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0023] like Figure 1-3As shown: an ultra-high pressure filter for the outlet end of a hydrogen compressor, comprising a filter body 1, an air inlet 4 and an air outlet 6 are provided on the filter body 1, a filter chamber is installed in the filter body, a sintered mesh filter element is installed in the filter chamber, the sintered mesh filter element separates the filter chamber into an outer filter chamber 9 and an inner filter chamber 10, filtering is performed by entering the inner filter chamber from the outer filter chamber, the outer filter chamber 9 is connected to the air inlet, and the inner filter chamber 10 is connected to the air outlet; wherein the sintered mesh filter element is composed of an outer mesh protective layer 16, a filter element structural layer 17, and an inner support frame layer, has excellent backwashing regeneration performance, can be used repeatedly for a long time, and adopts multi-layer sintered filter materials to enhance the filtering stability of the filter element, and the filter element structure The filter layer can also adopt a mixed filter layer to meet the requirements of higher precision and pressure difference working conditions, wherein a slag discharge port 11 is also installed at the bottom of the filter body 1, and the slag discharge port is connected to the bottom of the filter outer chamber, and a valve 12 is installed at the slag discharge port 11; by installing the slag discharge port 11 at the bottom of the filter body and equipping it with a valve 12, impurities and particulate matter accumulated during the filtration process can be easily discharged, thereby avoiding filter blockage and extending the service life of the filter. At the same time, the installation of the valve makes the slag discharge operation more flexible and safe, and improves maintenance efficiency; through the built-in sintered mesh filter element, the filter can effectively filter out tiny particles, impurities and pollutants in hydrogen, ensuring that the hydrogen discharged from the exhaust port meets high purity standards. The sintered mesh filter element, with its unique pore structure and excellent filtration efficiency, provides reliable guarantee for the subsequent application of hydrogen.

[0024] The filter body includes an upper shell 2 and a lower shell 3, wherein the shell wall of the lower shell 3 is thicker to meet the requirements of overpressure use, wherein the upper shell is installed on the top of the lower shell, and the sintered mesh filter element is installed in the lower shell. The cross-section of the upper shell 2 is T-shaped, and a connecting portion 13 is installed at the bottom of the upper shell. The connecting portion 13 extends into the lower shell and is threadedly matched with the inner wall of the lower shell. The filter body is designed as a split structure of an upper shell and a lower shell, and is connected by threaded matching, which is not only convenient for installation and disassembly, but also convenient for cleaning and maintenance of the inside of the filter. In addition, this design also improves the sealing performance of the filter, prevents hydrogen leakage, and ensures the filtering effect.

[0025] In addition, to ensure the sealing effect, a top sealing structure 14 and a side sealing structure 15 are designed between the upper shell 2 and the lower shell 3. The top sealing structure includes a seal installed at the top joint surface between the upper shell and the lower shell, and the side sealing structure 15 includes an annular seal coaxially installed on the bottom outer wall of the connection part; the installation of the top sealing structure and the side sealing structure 15 further enhances the sealing performance of the filter. The top sealing structure ensures the tight connection between the upper shell and the lower shell through the seal to prevent gas leakage; the side sealing structure ensures the tight fit between the connection part and the inner wall of the lower shell through the annular seal, further improving the sealing effect. This double sealing design ensures the stable operation of the filter under high pressure environment.

[0026] The air inlet 4 and the air outlet 6 are symmetrically installed on both sides of the top of the upper shell, and the upper shell is provided with an air inlet channel 5 and an air outlet channel 7. One end of the air inlet channel 5 is connected to the air inlet and the other end is connected to the filter outer chamber, and one end of the air outlet channel is connected to the air outlet and the other end is connected to the filter inner chamber. The above design is not only beautiful, but also makes the gas flow smoother. The design of the air inlet channel and the air outlet channel allows hydrogen to smoothly enter the filter outer chamber and be discharged after being filtered by the sintered mesh filter element, ensuring the filtration efficiency and filtration effect. At the same time, the air outlet channel is installed in the connecting part and connected to the air outlet position at the top of the sintered mesh filter element, reducing the resistance of gas flow and improving the filtration efficiency.

[0027] A support platform is installed at the bottom of the sintered mesh filter element in the filter chamber, the connection part is sealed and connected to the top of the sintered mesh filter element, and the air outlet channel is installed in the connection part and communicated with the air outlet position at the top of the sintered mesh filter element; the sintered mesh filter element can be stably supported to prevent it from being deformed or damaged under high pressure. At the same time, the support platform also plays a role in dispersing pressure and extending the service life of the sintered mesh filter element. This design makes the filter more stable and reliable under high pressure.

[0028] The filter body 1 and the sintered mesh filter element 8 are both made of hydrogen embrittlement resistant materials, among which hydrogen embrittlement resistant materials mainly include two categories: metal materials and aggregate materials. Metal materials: iron, steel and nickel alloys, which are widely used in high-pressure vessels, pipelines, pumps and valves in nuclear power plants and petrochemical industries because they can maintain mechanical properties and corrosion resistance under high temperature and high pressure. In particular, by adjusting the alloy composition and heat treatment, hydrogen embrittlement resistant metal materials can be obtained. Stainless steel: Some stainless steels such as 316 stainless steel have good hydrogen embrittlement resistance at room temperature. If stainless steel contains Ni, Ti and Mo, such as stainless steel 321, 316, etc., martensitic transformation will not occur at low temperatures, and it has stability for low-temperature use. In addition, 1Cr18Ni9Ti has also been proven to have good hydrogen embrittlement resistance. Aluminum alloy: such as 6061 aluminum alloy, which has excellent hydrogen embrittlement resistance and is more suitable for the lining of high-pressure hydrogen cylinders. my country's national standard for hydrogen cylinders GB / T 35544-2017 also uses 6061 aluminum alloy as the liner material of hydrogen cylinders. Aggregate materials: polymer materials, polymer composite materials, glass fiber reinforced materials, etc.: These materials are composed of a large number of molecules and have the advantages of good hydrogen isolation, high strength, high toughness, corrosion resistance, etc. They are important basic materials for the development of hydrogen energy and hydrogen energy technology, and can be applied to hydrogen energy storage, transportation and manufacturing. The above material selection can effectively resist the material embrittlement phenomenon that may occur in the hydrogen environment, extend the service life of the equipment, and improve the safety and stability of the equipment.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An ultra-high pressure filter for the outlet of a hydrogen compressor, comprising a filter body, wherein the filter body is provided with an air inlet and an air outlet, and characterized in that: The filter body is provided with a filter chamber, and a sintered mesh filter element is provided in the filter chamber, and the sintered mesh filter element divides the filter chamber into an outer filter chamber and an inner filter chamber, and filtering is performed from the outer filter chamber into the inner filter chamber, the outer filter chamber is communicated with the air inlet, and the inner filter chamber is communicated with the exhaust port; The filter body comprises an upper shell and a lower shell, wherein the upper shell is arranged on the top of the lower shell, the sintered mesh filter element is arranged in the lower shell, the cross section of the upper shell is T-shaped, and a connecting portion is arranged at the bottom of the upper shell, the connecting portion extends into the lower shell and is threadedly matched with the inner wall of the lower shell; A top sealing structure and a side sealing structure are arranged between the upper shell and the lower shell. The top sealing structure includes a sealing member arranged at the top joint surface between the upper shell and the lower shell, and the side sealing structure includes an annular sealing member coaxially arranged on the outer side wall of the bottom of the connecting part.

2. The ultra-high pressure filter for the outlet of a hydrogen compressor according to claim 1, characterized in that: The bottom of the filter body is also provided with a slag discharge port, which is communicated with the bottom of the filter outer chamber, and a valve is provided at the slag discharge port.

3. The ultra-high pressure filter for the outlet of a hydrogen compressor according to claim 1, characterized in that: The air inlet and the air outlet are symmetrically arranged on both sides of the top of the upper shell body. An air inlet channel and an air outlet channel are arranged inside the upper shell body. One end of the air inlet channel is connected to the air inlet and the other end is connected to the outer filter chamber. One end of the air outlet channel is connected to the air outlet and the other end is connected to the inner filter chamber.

4. The ultra-high pressure filter for the outlet of a hydrogen compressor according to claim 3, characterized in that: A support platform is arranged in the filter chamber at the bottom of the sintered mesh filter element, the connecting portion is sealed and connected to the top of the sintered mesh filter element, and the air outlet channel is arranged in the connecting portion and communicated with the air outlet position at the top of the sintered mesh filter element.

5. The ultra-high pressure filter for the outlet of a hydrogen compressor according to claim 1, characterized in that: The filter body and the sintered mesh filter element are both made of hydrogen embrittlement resistant material.

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