Hydrogen piston compressor

Abstract

The utility model provides a hydrogen piston compressor which is characterized in that a compression space is formed by a piston assembly, a wall body of a compression chamber and a bottom plate, and hydrogen is compressed in the compression space through movement of the piston assembly; and when hydrogen with different flows and pressures needs to be treated, different compression spaces are needed, at the moment, the base plate and the interior of the wall body can move relatively through the driving assembly, adjustment of the compression spaces is achieved so as to adapt to different flow or pressure requirements, and therefore the compression efficiency and the process level of the hydrogen are ensured. The hydrogen piston compressor solves the technical problems that in the prior art, when hydrogen with different flows and pressures needs to be treated, flexibility is poor, if the flow or pressure requirement of the hydrogen is changed, a compression chamber of the hydrogen compressor cannot effectively adapt, the compression efficiency is reduced, and the process requirement cannot be met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to hydrogen compressor technical field, concretely relates to a hydrogen piston compressor. BACKGROUND

[0002] As a clean energy, hydrogen is gradually becoming an important choice to replace fossil fuels, especially in the fields of fuel cell vehicles, hydrogen power stations, chemical synthesis, etc. The application of hydrogen is increasingly widespread. In the application of hydrogen, in order to improve the storage density, meet the application requirements, facilitate transportation, hydrogen compressors are generally used to compress hydrogen.

[0003] The existing hydrogen compressor generally compresses hydrogen through a compression chamber and a piston to obtain the required compressed hydrogen.

[0004] However, the compression chamber of the existing hydrogen compressor is generally a fixed cavity structure, and in use, when different flow rates and pressures of hydrogen need to be processed, the flexibility is poor. If the flow rate or pressure requirement of hydrogen changes, the compression chamber of the hydrogen compressor cannot effectively adapt, resulting in reduced compression efficiency and the technical problem of not meeting the process requirements. UTILITY MODEL CONTENT

[0005] In order to solve the technical problem in the background art that the compression chamber of the existing hydrogen compressor is a fixed cavity structure, and in use, when different flow rates and pressures of hydrogen need to be processed, the flexibility is poor. If the flow rate or pressure requirement of hydrogen changes, the compression chamber of the hydrogen compressor cannot effectively adapt, resulting in reduced compression efficiency and the technical problem of not meeting the process requirements, the utility model provides a hydrogen piston compressor.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A hydrogen piston compressor, the hydrogen piston compressor includes: a compression chamber, a driving assembly and a piston assembly; the compression chamber includes a wall body and a bottom plate, the wall body and the bottom plate enclose a cavity; the piston assembly is partially inserted into the cavity through the wall body; the piston assembly inserted into the cavity, the wall body and the bottom plate enclose a compression space; the driving assembly is arranged outside the compression chamber and is fixedly connected with the bottom plate, and the driving assembly is used to drive the bottom plate and the wall body to move relatively.

[0008] Optionally, the driving assembly includes a driver, a connecting piece and a locking piece; the driver is arranged outside the compression chamber, and the driver is connected with the bottom plate through the connecting piece; the locking piece is arranged on the connecting piece.

[0009] Optionally, the driver is any one of a hydraulic drive or a drive motor.

[0010] Optionally, a sealing assembly is arranged on the bottom plate and abuts against the wall body.

[0011] Optionally, the piston assembly comprises a piston valve, a piston rod and a piston driving element; the piston driving element is arranged outside the compression chamber, the piston valve is arranged in the cavity and abuts against the wall body; the piston valve, the wall body and the bottom plate enclose the compression space; the piston rod penetrates through the wall body and is connected with the piston driving element and the piston valve respectively.

[0012] Optionally, a sealing layer is arranged between the piston valve and the wall body.

[0013] Optionally, an air inlet valve and an air outlet valve are further arranged on the wall body and communicate with the compression space.

[0014] Optionally, the air inlet valve and the air outlet valve are solenoid valves.

[0015] Optionally, a conical groove is arranged on the side of the bottom plate close to the piston valve, and a conical protrusion corresponding to the bottom plate is arranged on the side of the piston valve close to the bottom plate.

[0016] Optionally, a pressure relief device is further arranged on the piston valve.

[0017] The hydrogen piston compressor has the advantages that:

[0018] The hydrogen piston compressor provided by the present application forms a compression space through a piston assembly and a wall body and a bottom plate of a compression chamber, and the piston assembly is used for compressing hydrogen in the compression space; when hydrogen with different flow rates and pressures needs to be processed, different compression spaces are required, at this time, the inside of the bottom plate and the wall body can be relatively moved through a driving assembly, the compression space is adjusted, different flow rates or pressure requirements are adapted, and the compression efficiency and process level of hydrogen are ensured. The hydrogen piston compressor provided by the present application solves the technical problems that the flexibility is poor when hydrogen with different flow rates and pressures needs to be processed in the prior art, and if the flow rate or pressure requirement of hydrogen changes, the compression chamber of the hydrogen compressor cannot be effectively adapted, the compression efficiency is reduced, and the process requirement cannot be met. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 is a schematic view of the hydrogen piston compressor in the present application;

[0020] Fig. 2 is a further schematic view of the hydrogen piston compressor in the present application.

[0021] Wherein: 1, compression chamber; 11, wall body; 12, bottom plate; 121, sealing assembly; 13, air inlet valve; 14, air outlet valve; 2, drive assembly; 21, driver; 22, connecting piece; 23, locking piece; 3, piston assembly; 31, piston valve; 32, piston rod; 33, piston driver; 34, pressure relief device. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a presence of a feature, step, operation, device, component and / or combination thereof.

[0024] Unless specifically stated otherwise, the relative arrangement of components and steps, numerical expressions, and numerical values set forth in the various embodiments described herein are not limiting. It should also be understood that the various embodiments described herein can be implemented in software, hardware, firmware, or any combination thereof. Moreover, it should be understood that the functionality associated with any of the above described methods can be performed in either hardware or software, and any sequences of the above described functions can be re-sequenced. The described embodiments are not limited to any particular hardware, software, or firmware, nor to any particular combinations thereof. The described embodiments are intended to cover any and all modifications, variations, combinations or equivalents that fall within the scope of the present application. Accordingly, the application should not be construed as limited to the above described embodiments. In addition, those skilled in the art will readily appreciate that devices, methods and assemblages like those described above can typically be arranged, modified, or reproduced, carrying out the same or similar functionality in different embodiments, and that such arrangements, modifications, or reproductions do not give rise to a withdrawal from the scope of the application. The functions of the various elements shown in the figures can be provided through the use of dedicated hardware as well as hardware capable of executing software in association with appropriate software. When provided by a processor, the functions can be provided by a single dedicated processor, by a single shared processor, or by a plurality of individual processors, some of which can be shared. Moreover, explicit use of the term "processor" or "controller" should not be construed to refer exclusively to hardware capable of executing software, and can implicitly include, without limitation, digital signal processor (DSP) hardware, read-only memory (ROM) for storing software, random access memory (RAM), and non-volatile storage. Moreover, all information on the existence, nature, and utilization of the components described herein can not be considered limiting of the application. Accordingly, while the application is particularly susceptible to the embodiments as specifically described, it is understood that the application can be practiced otherwise than specifically described without departing from the spirit and scope of the application.

[0025] In the description of the utility model, it is understood that the orientation words such as '' front, back, top, bottom, left, right '' '' horizontal, vertical, perpendicular, horizontal '' and '' top, bottom '' and the like indicated orientation or positional relationship usually based on the orientation or positional relationship shown in the drawing, just for the convenience of describing the utility model and simplifying the description, in the absence of the opposite statement, these orientation words do not indicate and imply the device or element indicated must have a particular orientation or be constructed and operated in a particular orientation, therefore can not be understood as the limitation of the protection scope of the utility model: the orientation words '' inside, outside '' refer to the inside and outside relative to the contour of each component.

[0026] For the convenience of description, spatial relative terms such as '' above'', '' above'', '' upper surface'', '' upper '' and the like can be used here to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawing. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawing. For example, if the device in the drawing is inverted, the device described as '' above '' or '' above '' other devices or structures will be positioned '' below '' or '' below '' other devices or structures. Thus, the example term '' above '' can include both '' above '' and '' below '' orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative description used here is interpreted accordingly.

[0027] In addition, it should be noted that the use of '' first'', '' second '' and the like to limit parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, therefore can not be understood as the limitation of the protection scope of the utility model.

[0028] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict. The utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0029] Reference Figs. 1-2 , a schematic diagram of a hydrogen piston compressor described in the application is shown, which comprises a compression chamber 1, a driving assembly 2 and a piston assembly 3;The compression chamber 1 comprises wall body 11 and bottom plate 12, and the wall body 11 and the bottom plate 12 are enclosed to form a cavity;The piston assembly 3 is partially inserted into the cavity through the wall body 11;The piston assembly 3 inserted into the cavity, wall body 11 and bottom plate 12 enclose to form compression space;The driving assembly 2 is arranged outside the compression chamber 1 and is fixedly connected with the bottom plate 12, and the driving assembly 2 is used to drive the bottom plate 12 and the wall body 11 to move relatively.

[0030] In the embodiment, the compression space is formed by the piston assembly 3 and the wall body 11 and the bottom plate 12 of the compression chamber 1, and the hydrogen is compressed in the compression space by the piston assembly 3; when the hydrogen with different flow and pressure needs to be processed, different compression spaces are needed, at this time, the relative movement of the bottom plate 12 and the wall body 11 is realized by the driving assembly 2, the adjustment of the compression space is realized, so as to adapt to the different flow or pressure requirements, so as to ensure the compression efficiency and process level of the hydrogen. The hydrogen piston compressor provided by the utility model solves the technical problems that the flexibility is poor when the hydrogen with different flow and pressure needs to be processed in the prior art, and the compression chamber of the hydrogen compressor cannot effectively adapt if the flow or pressure requirement of the hydrogen changes, resulting in the reduction of the compression efficiency and the failure to meet the process requirements.

[0031] It should be noted that the wall body 11 in the embodiment includes a side wall and an upper wall, and the piston assembly 3 is inserted into the cavity through the upper wall.

[0032] Optionally, referring to Fig. 2 The driving assembly 2 in the utility model includes a driver 21, a connecting piece 22 and a locking piece 23; the driver 21 is arranged outside the compression chamber 1, and the driver 21 is connected with the bottom plate 12 through the connecting piece 22; and the locking piece 23 is arranged on the connecting piece 22.

[0033] Further, the locking piece 23 in the embodiment can be selected from an electric control locking switch, a mechanical switch and the like.

[0034] Optionally, the driver 21 in the utility model is any one of a hydraulic driving piece or a driving motor.

[0035] Optionally, the bottom plate 12 in the utility model is provided with a sealing assembly 121 abutting against the wall body 11.

[0036] In the embodiment, the sealing assembly 121 abutting against the wall body 11 is arranged on the bottom plate 12, the bottom plate 12 and the wall body 11 are sealed by the sealing assembly 121, so as to prevent the gap from being generated in the process of the relative movement of the bottom plate 12 and the wall body 11, and the hydrogen leakage and the influence on the compression efficiency.

[0037] Optionally, the piston assembly 3 in the utility model includes a piston valve 31, a piston rod 32 and a piston driving piece 33; the piston driving piece 33 is arranged outside the compression chamber 1, the piston valve 31 is arranged in the cavity, and the piston valve 31 abuts against the wall body 11; the piston valve 31, the wall body 11 and the bottom plate 12 form the compression space; and the piston rod 32 penetrates through the wall body 11 and is connected with the piston driving piece 33 and the piston valve 31 respectively.

[0038] In the embodiment, the piston valve 31 is connected with the piston driving element 33 through the piston rod 32, and in use, the piston valve 31 is driven to move in the compression chamber 1 by the piston driving element 33 and the piston rod 32, so that the hydrogen in the compression chamber 1 is compressed.

[0039] Optionally, the piston valve 31 in the utility model is provided with a sealing layer between the wall body 11.

[0040] In the embodiment, the sealing layer is arranged between the piston valve 31 and the wall body 11, so as to ensure the compression efficiency of the hydrogen.

[0041] Optionally, the wall body 11 in the utility model is further provided with an air inlet valve 13 and an air outlet valve 14, and the air inlet valve 13 and the air outlet valve 14 communicate with the compression space.

[0042] Optionally, the air inlet valve 13 and the air outlet valve 14 in the utility model are solenoid valves.

[0043] In the embodiment, the hydrogen is input and output through the air inlet valve 13 and the air outlet valve 14, and in particular, the solenoid valve is adopted, which has the advantages of electric control, fast reaction rate and high precision, and is convenient for accurately controlling the hydrogen in the process of compressing the hydrogen.

[0044] Optionally, the bottom plate 12 in the utility model is a conical groove on the side close to the piston valve 31, and the piston valve 31 is a conical protrusion corresponding to the bottom plate 12 on the side close to the bottom plate 12.

[0045] In the embodiment, the bottom plate 12 is a conical groove on the side close to the piston valve 31, and the piston valve 31 is a conical protrusion corresponding to the bottom plate 12 on the side close to the bottom plate 12, so as to have a good guiding effect on the hydrogen in the compression process and improve the hydrogen compression efficiency.

[0046] Optionally, the piston valve 31 in the utility model is further provided with a pressure relief device 34.

[0047] In the embodiment, in use, when the pressure in the compression space exceeds a safety threshold, the pressure relief device 34 will be opened, and the hydrogen in the compression space is discharged to the side of the piston valve 31 away from the compression space, so as to prevent the safety hazard caused by the excessive pressure in the compression space.

[0048] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0049] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A hydrogen piston compressor, characterized by The hydrogen piston compressor comprises a compression chamber (1), a driving assembly (2) and a piston assembly (3); The compression chamber (1) comprises a wall body (11) and a bottom plate (12), and the wall body (11) and the bottom plate (12) form a cavity; The piston assembly (3) is partially inserted into the cavity through the wall body (11); The piston assembly (3), the wall body (11) and the bottom plate (12) form a compression space by being enclosed in the cavity; The driving assembly (2) is arranged outside the compression chamber (1) and is fixedly connected with the bottom plate (12), and the driving assembly (2) is used for driving the bottom plate (12) and the wall body (11) to move relative to each other.

2. The hydrogen piston compressor of claim 1, wherein, The driving assembly (2) comprises a driver (21), a connecting piece (22) and a locking piece (23); The driver (21) is arranged outside the compression chamber (1), and the driver (21) is connected with the bottom plate (12) through the connecting piece (22); The locking piece (23) is arranged on the connecting piece (22).

3. The hydrogen piston compressor of claim 2, wherein, The driver (21) is any one of a hydraulic driving member or a driving motor.

4. The hydrogen piston compressor of claim 1, wherein, A sealing assembly (121) is arranged on the bottom plate (12) and abuts against the wall body (11).

5. The hydrogen piston compressor of claim 1, wherein, The piston assembly (3) comprises a piston valve (31), a piston rod (32) and a piston driving member (33); The piston driving member (33) is arranged outside the compression chamber (1), the piston valve (31) is arranged in the cavity, and the piston valve (31) abuts against the wall body (11); The piston valve (31), the wall body (11) and the bottom plate (12) form the compression space by being enclosed; The piston rod (32) passes through the wall body (11) and is connected with the piston driving member (33) and the piston valve (31) respectively.

6. The hydrogen piston compressor of claim 5, wherein, A sealing layer is arranged between the piston valve (31) and the wall body (11).

7. The hydrogen piston compressor of claim 5, wherein, An air inlet valve (13) and an air outlet valve (14) are further arranged on the wall body (11), and the air inlet valve (13) and the air outlet valve (14) communicate with the compression space.

8. The hydrogen piston compressor of claim 7, wherein, The air inlet valve (13) and the air outlet valve (14) are electromagnetic valves.

9. The hydrogen piston compressor of claim 5, wherein, A side of the bottom plate (12) close to the piston valve (31) is a conical recess, and a side of the piston valve (31) close to the bottom plate (12) is a conical protrusion corresponding to the bottom plate (12).

10. The hydrogen piston compressor of claim 5, wherein, A pressure relief device (34) is further arranged on the piston valve (31).

Images