Maintenance device and maintenance vehicle

Abstract

The utility model relates to the technical field of maintenance equipment, and provides a maintenance device and a maintenance vehicle. A first gas storage container is used for storing inert gas; the second gas storage container is used for storing hydrogen; the input end of the driving gas source pipeline can be selectively communicated with the first gas storage container and / or the compressor, or is selectively not communicated with the first gas storage container and / or the compressor; the input end of the medium gas source pipeline can be selectively communicated with the first gas storage container or the second gas storage container; the filling pipeline comprises a pressurizing branch and a bypass branch, the pressurizing branch is provided with a pneumatic pressurizing pump, gas in the driving gas source pipeline is used for adjusting the working state of the pneumatic pressurizing pump, and gas in the medium gas source pipeline can selectively enter the pressurizing branch to be pressurized or enter the bypass branch. The gas tightness of the operation object can be detected, hydrogen can be supplemented to the operation object, and stable output of the medium gas source can be maintained.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of maintenance equipment, especially relates to a maintenance device and maintenance vehicle. BACKGROUND

[0002] With the domestic comprehensive start energy supply structure and consumption demand to clean, low carbon and safety depth transformation action, and strive to build a new energy system with renewable energy as the core, hydrogen energy represented by renewable hydrogen gradually receives high attention in petroleum chemical industry, steel, transportation and shipping aviation and other fields.

[0003] Fuel cell vehicle (FCV) is a kind of vehicle using the power generated by on-board fuel cell device. The fuel used by on-board fuel cell device is high-purity hydrogen or high-hydrogen reforming gas obtained by reforming hydrogen-containing fuel.

[0004] The maintenance work of fuel cell vehicle mainly focuses on the gas tightness test of its hydrogen system pipeline and the temporary emergency hydrogen supplement of hydrogen system. When carrying out the gas tightness test, inert gas is generally used as medium gas source, and compressed air is used as driving gas source, the driving gas source is used to drive the pneumatic booster pump to work on the medium gas source, and the pressurized medium gas source enters the hydrogen system pipeline for testing, so that the maintenance device needs to be connected with the compressor to provide compressed air as the driving gas source, resulting in heavy maintenance equipment.

[0005] Some manufacturers use gas cylinders, and the inert gas in the gas cylinder is used as both driving gas source and medium gas source. However, as the operation proceeds, the inert gas in the gas cylinder decreases, and the pressure decreases, which cannot guarantee the stable output of constant pressure of inert gas as driving gas source to drive the pneumatic booster pump.

[0006] Therefore, there is an urgent need for a maintenance device and a maintenance vehicle to solve the above technical problems. INVENTION CONTENTS

[0007] The utility model aims at providing a kind of maintenance device and maintenance vehicle, can detect the gas tightness of operation object, can also supplement hydrogen for operation object, and can maintain the stable output of medium gas source.

[0008] To achieve this purpose, the utility model adopts the following technical solutions:

[0009] The maintenance device comprises:

[0010] The first gas storage container is used to store inert gas;

[0011] The second gas storage container is used to store hydrogen;

[0012] The input end of the driving gas source pipeline can selectively communicate with the first gas storage container and / or the compressor, or can not communicate with both of them;

[0013] The input end of the medium gas source pipeline can selectively communicate with the first gas storage container or the second gas storage container;

[0014] The filling pipeline includes a pressurization branch and a bypass branch. The pressurization branch is provided with a pneumatic pressurization pump. The gas in the driving gas source pipeline is used to adjust the working state of the pneumatic pressurization pump. The gas in the medium gas source pipeline can selectively enter the pressurization branch for pressurization or enter the bypass branch.

[0015] As a preferred technical solution of the maintenance device, the driving gas source pipeline includes a third gas storage container and a second stop valve a. The output end of the compressor communicates with the input end of the third gas storage container. The third gas storage container selectively communicates with the filling pipeline through the second stop valve a.

[0016] As a preferred technical solution of the maintenance device, the first gas storage container is provided with a first pressure sensor.

[0017] As a preferred technical solution of the maintenance device, the input end of the driving gas source pipeline is provided with a first regulating valve. The first regulating valve is connected with the output end of the first gas storage container.

[0018] As a preferred technical solution of the maintenance device, the pressurization branch includes a second regulating valve. The output end of the driving gas source pipeline is connected with the pneumatic pressurization pump through the second regulating valve.

[0019] As a preferred technical solution of the maintenance device, the filling pipeline further includes a pressure relief branch. The input end of the pressure relief branch is connected with the input end of the second regulating valve.

[0020] As a preferred technical solution of the maintenance device, the filling pipeline is connected with the driving gas source pipeline through a first filter.

[0021] As a preferred technical solution of the maintenance device, the filling pipeline is connected with the medium gas source pipeline through a second filter.

[0022] As a preferred technical solution of the maintenance device, the filling pipeline further includes a backflow branch. The backflow branch connects the pneumatic pressurization pump and the first gas storage container. The inert gas can flow back from the pneumatic pressurization pump to the first gas storage container.

[0023] A maintenance vehicle is also provided, comprising a vehicle compressor and the above-mentioned maintenance device, wherein the first input end of the above-mentioned driving air source pipeline is connected to the above-mentioned vehicle compressor, and the second input end of the above-mentioned driving air source pipeline is connected to the above-mentioned first air storage container.

[0024] Beneficial effects of the utility model:

[0025] The utility model provides a maintenance device, including a first gas storage container, a second gas storage container, a driving gas source pipeline, a medium gas source pipeline and a filling pipeline. Among them, the first gas storage container is used to store inert gas; the second gas storage container is used to store hydrogen; the input end of the driving gas source pipeline can be selectively connected to the first gas storage container and / or the compressor, or selectively disconnected from both; the input end of the medium gas source pipeline can be selectively connected to the first gas storage container or the second gas storage container; the filling pipeline includes a boost branch and a bypass branch, the boost branch is provided with a pneumatic booster pump, the gas in the driving gas source pipeline is used to adjust the working state of the pneumatic booster pump, and the gas in the medium gas source pipeline can selectively enter the boost branch for boosting or enter the bypass branch.

[0026] Thus, the maintenance device provided in this embodiment can both test the airtightness of the work object and replenish hydrogen for the work object. During the airtightness test, an inert gas is used as the medium gas source and / or the driving gas source. The driving gas source pipeline can be connected to the vehicle's built-in compressor, replacing the first gas storage container to provide the driving gas source. This reduces the supporting equipment required for the maintenance device and maintains the stable pressure of the driving gas source during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0028] Figure 1 This is a schematic structural diagram of a driving gas source pipeline provided by an embodiment of the present utility model;

[0029] Figure 2 This is a schematic structural diagram of a medium gas source pipeline provided by an embodiment of the utility model;

[0030] Figure 3 This is a schematic diagram of the connection between the drive gas source pipeline and the medium gas source pipeline provided by the embodiment of the utility model. Figure 1 ;

[0031] Figure 4Is the connection schematic diagram of the boost branch and the pressure relief branch provided by the embodiment of the utility model;

[0032] Figure 5 Is the structure schematic diagram of the bypass branch provided by the embodiment of the utility model;

[0033] Figure 6 Is the structure schematic diagram of the filling pipeline (except the reflux branch) provided by the embodiment of the utility model Figure 1 ;

[0034] Figure 7 Is the structure schematic diagram of the docking pipeline provided by the embodiment of the utility model;

[0035] Figure 8 Is the connection schematic diagram of the filling pipeline and the docking pipeline provided by the embodiment of the utility model;

[0036] Figure 9 Is the connection schematic diagram of the driving gas source pipeline and the medium gas source pipeline provided by the embodiment of the utility model Figure 2 ;

[0037] Figure 10 Is the structure schematic diagram of the filling pipeline (except the reflux branch) provided by the embodiment of the utility model Figure 2 ;

[0038] Figure 11 Is the structure schematic diagram of the frame fixing assembly provided by the embodiment of the utility model Figure 1 ;

[0039] Figure 12 Is the structure schematic diagram of the frame fixing assembly provided by the embodiment of the utility model Figure 2 .

[0040] In the figure,

[0041] 100, first gas storage container;

[0042] 200, second gas storage container;

[0043] 300, driving gas source pipeline; 310, first driving gas source input pipe; 321, second driving gas source input pipe a; 322, second driving gas source input pipe b; 330, driving gas source output pipe; 340, first stop valve; 350, second stop valve; 351, second stop valve a; 352, second stop valve b; 360, first regulating valve; 370, first pressure sensor; 380, second pressure sensor; 390, third gas storage container;

[0044] 400, medium gas source pipeline; 410, first medium gas source input pipe; 420, second medium gas source input pipe; 430, first medium gas source output pipe; 440, third stop valve; 450, fourth stop valve; 460, second medium gas source output pipe; 470, twelfth stop valve;

[0045] 500, filling pipeline; 510, booster branch; 511, pneumatic booster pump; 512, first booster input pipe; 513, second booster input pipe; 514, first booster output pipe; 515, second booster output pipe; 516, second regulating valve; 517, third pressure sensor; 518, first safety valve; 519, ninth stop valve; 520, bypass branch; 521, eighth stop valve; 522, first check valve; 530, pressure relief branch; 531, fifth stop valve; 532, second installation valve; 540, unloading device; 550, first input pipe; 551, first filter; 560, second input pipe; 561, second filter; 562, sixth stop valve; 563, fourth pressure sensor; 570, return branch; 571, third filter; 572, seventh stop valve; 573, third regulating valve; 574, fourth pressure sensor; 580, cooling device; 590, third input pipe; 591, second check valve; 592, twelfth stop valve;

[0046] 600, compressor; 610, vehicle built-in compressor; 620, vehicle external compressor;

[0047] 700, work object;

[0048] 800, docking pipeline; 810, first hydrogenation gun; 820, second hydrogenation gun; 830, fifth pressure sensor; 840, tenth stop valve; 850, eleventh stop valve; 860, unloading valve;

[0049] 900, frame fixing assembly; 910, peripheral frame; 920, fixing support plate; 930, boss; 940, hydrogenation gun fixing frame. DETAILED DESCRIPTION

[0050] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not limited to the utility model. In addition, it should be noted that in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0051] In the description of the utility model, unless another definite provision and limitation, the term "connect", "connection", "fixed" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication or two elements of the interaction relationship.For the ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0052] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can include the first and second features direct contact, also can include the first and second features are not direct contact but contact through the additional features between them.Moreover, the first feature is "on", "above" and "on" the second feature includes the first feature is directly above and obliquely above the second feature, or just indicates that the first feature horizontal height is higher than the second feature.The first feature is "under", "below" and "under" the second feature includes the first feature is directly below and obliquely below the second feature, or just indicates that the first feature horizontal height is less than the second feature.

[0053] In the description of the embodiment, the terms "on", "under", "right", etc. Orientation or positional relationship is based on the orientation or positional relationship shown in the drawing, only for the convenience of description and simplification operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model.In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0054] As Figures 1 to 12 Indicated, the utility model provides maintenance device, including first gas storage container 100, second gas storage container 200, drive gas source pipeline 300, medium gas source pipeline 400 and filling pipeline 500. Among them, first gas storage container 100 is used to store inert gas;Second gas storage container 200 is used to store hydrogen;The input end of drive gas source pipeline 300 can selectively communicate with first gas storage container 100 and / or with compressor 600, or selectively not communicate with both;The input end of medium gas source pipeline 400 can selectively communicate with first gas storage container 100 or second gas storage container 200;Filling pipeline 500 includes booster branch 510 and bypass branch 520, and booster branch 510 is provided with pneumatic booster pump 511, and the gas in drive gas source pipeline 300 is used to adjust the working state of pneumatic booster pump 511, and the gas in medium gas source pipeline 400 can selectively enter booster branch 510 and pressurize or enter bypass branch 520.

[0055] Exemplarily, as Figure 1As shown, in the embodiment, the driving gas source pipeline 300 includes a first driving gas source input pipe 310, a second driving gas source input pipe and a driving gas source output pipe 330. The first driving gas source input pipe 310 is connected to the output end of the first gas storage container 100 and the input end of the driving gas source output pipe 330, and the first driving gas source input pipe 310 is provided with a first stop valve 340 for switching the connection state or disconnection state between the first gas storage container 100 and the driving gas source output pipe 330; the second driving gas source input pipe is connected to the output end of the compressor 600 and the input end of the driving gas source output pipe 330, and the second driving gas source input pipe is provided with a second stop valve 350 for switching the connection state or disconnection state between the compressor 600 and the driving gas source output pipe 330. In this way, through the control of the first stop valve 340 and / or the second stop valve 350, the input end of the driving gas source pipeline 300 can be selectively connected to the first gas storage container 100 and / or the compressor 600, or not connected to both of them.

[0056] As shown, Figure 2 As shown, the medium gas source pipeline 400 includes a first medium gas source input pipe 410, a second medium gas source input pipe 420 and a first medium gas source output pipe 430, the first medium gas source input pipe 410 is connected to the output end of the first gas storage container 100 and the input end of the first medium gas source output pipe 430, and the first medium gas source input pipe 410 is provided with a third stop valve 440 for switching the connection state or disconnection state between the first gas storage container 100 and the first medium gas source output pipe 430; the second medium gas source input pipe 420 is connected to the output end of the second gas storage container 200 and the input end of the first medium gas source output pipe 430, and the second medium gas source input pipe 420 is provided with a fourth stop valve 450 for switching the connection state or disconnection state between the second gas storage container 200 and the first medium gas source output pipe 430. In this way, through the third stop valve 440 and / or the fourth stop valve 450, the input end of the medium gas source pipeline 400 can be selectively connected to the first gas storage container 100 or the second gas storage container 200.

[0057] In other embodiments, the above effects can be achieved by plugging and unplugging.

[0058] As shown, Figures 4 to 6As shown, the filling pipeline 500 includes a pressurization branch 510 and a bypass branch 520. The pressurization branch 510 includes a pneumatic booster pump 511, a first pressurization input pipe 512, a second pressurization input pipe 513, a first pressurization output pipe 514, and a second pressurization output pipe 515. The first pressurization input pipe 512 is connected to the output end of the driving gas source output pipe 330 and the input end of the driving cavity of the pneumatic booster pump 511; the second pressurization input pipe 513 is connected to the output end of the first medium gas source output pipe 430 and the input end of the compression cavity of the pneumatic booster pump 511; the input end of the first pressurization output pipe 514 is connected to the output end of the driving cavity of the pneumatic booster pump 511, and the output end of the first pressurization output pipe 514 is connected to the unloading device 540; the input end of the second pressurization output pipe 515 is connected to the output end of the compression cavity of the pneumatic booster pump 511, and the output end of the second pressurization output pipe 515 is in communication with the work object 700.

[0059] The first gas storage container 100 stores inert gas. When the output port of the first gas storage container 100 is opened and the first stop valve 340 is opened, the inert gas can serve as a driving gas source, enter the pneumatic booster pump 511 through the driving gas source pipeline 300, and drive the pneumatic booster pump 511 to pressurize the medium gas source entering the pneumatic booster pump 511. When the output port of the first gas storage container 100 is opened and the third stop valve 440 is opened, the inert gas can enter the filling pipeline 500 as a medium gas source.

[0060] Specifically, the maintenance device includes two working modes. Mode one is used to detect the air tightness of the work object 700, and mode two is used to supplement hydrogen for the work object 700.

[0061] In the execution mode one, the output end of the first gas storage container 100 is opened, the first stop valve 340 and the third stop valve 440 are opened respectively, a part of the inert gas is used as the driving gas source, sequentially passes through the first driving gas source input pipe 310, the driving gas source output pipe 330 and the first pressure boosting input pipe 512, and then enters the driving cavity of the pneumatic pressure boosting pump 511, is used for driving the pneumatic pressure boosting pump 511 to work, and is discharged from the pneumatic pressure boosting pump 511 through the first pressure boosting output pipe 514; another part of the inert gas is used as the medium gas source, sequentially passes through the first medium gas source input pipe 410, the first medium gas source output pipe 430 and the second pressure boosting input pipe 513, and then enters the compression cavity of the pneumatic pressure boosting pump 511, the pneumatic pressure boosting pump 511 is driven by the driving gas source to work on the medium gas source, the medium gas source boosted by the pneumatic pressure boosting pump 511 enters the work object 700 through the second pressure boosting output pipe 515. In this way, the medium gas source with a certain pressure enters the work object 700, and is used for detecting the air tightness of the work object 700. By controlling the pressure of the driving gas source, the working state of the pneumatic pressure boosting pump 511 is adjusted, and then the pressure of the medium gas source output from the pneumatic pressure boosting pump 511 is adjusted, so as to adapt to the work requirements of different work objects 700. In this scheme, the inert gas is used as the medium gas source and the driving gas source.

[0062] Further, the first gas storage container 100 has relatively strong pressure, but as the work is carried out, the inert gas in the interior is lost, the pressure gradually decreases, and the pressure value P 驱动输出 decreases, when P 驱动输出 <P 驱动作业 , wherein P 驱动作业 is the pressure of the driving gas source provided by the pneumatic pressure boosting pump 511 to output the medium gas source meeting the work requirements. In this way, in the process of work, the pneumatic pressure boosting pump 511 cannot output the medium gas source meeting the work requirements due to the decrease of the driving gas source pressure, resulting in inaccurate work results, and the work needs to be reworked.

[0063] Therefore, in the embodiment, the driving gas source can also be provided by the compressor 600, the compressor 600 is started, can boost the air in the atmospheric environment to generate high-pressure air, the second stop valve 350 is opened, the high-pressure air is used as the driving gas source, sequentially passes through the second driving gas source input pipe, the second stop valve 350, the driving gas source output pipe 330 and the first pressure boosting input pipe 512, and then enters the driving cavity of the pneumatic pressure boosting pump 511, and the pneumatic pressure boosting pump 511 works on the medium gas source.

[0064] In use, when it is found that the pressure of the first gas storage container 100 cannot output the driving gas source required by the operation, the first stop valve 340 can be closed, so that the inert gas cannot enter the pneumatic booster pump 511 through the driving gas source pipeline 300 as the driving gas source, but only enters the pneumatic booster pump 511 through the medium gas source pipeline 400 as the medium gas source after being pressurized, and then enters the operation object 700. At the same time, the compressor 600 is started to output high-pressure air as the driving gas source, the second stop valve 350 is opened, and the high-pressure air is introduced into the driving gas source pipeline 300 to replace the inert gas to drive the pneumatic booster pump 511 to work. In this way, the compressor 600 is used as a redundant design, which can replace the first gas storage container 100 to provide the medium gas source during the operation, maintain the pressure stability of the driving gas source during the operation, and further ensure the pressure stability of the medium gas source output by the pneumatic booster pump 511.

[0065] The second stop valve 350 and the first stop valve 340 can also be opened at the same time, and the compressor 600 and the first gas storage container 100 can be used to provide the driving gas source at the same time, that is, the driving gas source is a mixture of high-pressure air and inert gas at this time.

[0066] Further, before starting the pneumatic booster pump 511, the first gas storage container 100 and the corresponding third stop valve 440 are opened, so that the medium gas source first enters the compression chamber of the pneumatic booster pump 511 through the first medium gas source output pipeline 430 and the second pressurization input pipeline 513. Since the first gas storage container 100 has a pre-pressure, and the value of the pre-pressure is greater than the values of the first medium gas source output pipeline 430, the second pressurization input pipeline 513 and the compression chamber of the unstarted pneumatic booster pump 511, the medium gas source is first introduced into the compression chamber of the pneumatic booster pump 511, which can use the pre-pressure in the first gas storage container 100 to increase the pressure of the compression chamber of the unstarted pneumatic booster pump 511. The driving gas source drives the pneumatic booster pump 511, which can shorten the working time of the pneumatic booster pump 511, and the pneumatic booster pump 511 can output the medium gas source required by the operation more quickly.

[0067] In this embodiment, the inert gas stored in the first gas storage container 100 is nitrogen and / or helium.

[0068] In this embodiment, the compressor 600 can be an external compressor 620 of the vehicle, which is a part specially configured for the maintenance device to output the driving gas source. It can also be an internal compressor 610 of the vehicle, that is, a compressor 600 used to provide driving force for the brake clutch. Using the internal compressor 610 of the vehicle can reduce the supporting parts of the maintenance device.

[0069] In the second execution mode, the driving gas source pipeline 300 is closed, the second gas storage container 200 is opened, the fourth stop valve 450 is opened, and the hydrogen in the second gas storage container 200 is used as the medium gas source and sequentially passes through the second medium gas source input pipeline 420, the first medium gas source output pipeline 430 and the bypass branch 520 to enter the work object 700 to supplement the hydrogen for the work object 700.

[0070] Further, in the second execution mode, the first gas storage container 100 and the third stop valve 440 are first opened, at this time, the output end of the bypass branch 520 is not communicated with the work object 700 but communicated with the atmosphere, the inert gas in the first gas storage container 100 sequentially passes through the first medium gas source input pipeline 410, the first medium gas source output pipeline 430 and the bypass branch 520 to clean the medium gas source pipeline 400 and the bypass branch 520, and the residual gas of the last operation is exhausted, then the first gas storage container 100 and the third stop valve 440 are closed, the output end of the bypass branch 520 is communicated with the work object 700, the second gas storage container 200 and the fourth stop valve 450 are opened to supplement the hydrogen for the work object 700. After the hydrogen supplement for the work object 700 is completed, the second gas storage container 200 and the fourth stop valve 450 are closed, the output end of the bypass branch 520 is disconnected with the work object 700, the first gas storage container 100 and the third stop valve 440 are opened, the residual hydrogen is exhausted by using the inert gas to clean the medium gas source pipeline 400 and the bypass branch 520, and then the first gas storage container 100 and the third stop valve 440 are closed.

[0071] In this way, the maintenance device provided in the embodiment can detect the air tightness of the work object 700 and supplement the hydrogen for the work object 700. In the air tightness detection, the inert gas is used as the medium gas source and / or the driving gas source, the driving gas source pipeline 300 can be connected with the compressor 610 built in the vehicle to replace the first gas storage container 100 to provide the driving gas source, reduce the required matching equipment of the maintenance device, and maintain the pressure stability of the driving gas source in the operation process.

[0072] Further, the cooling member 580 is installed in the bypass branch 520, and the medium gas source pressurized by the pneumatic booster pump 511 is cooled by the cooling member 580 and then enters the work object 700.

[0073] Optionally, the driving gas source pipeline 300 comprises a third gas storage container 390 and a second stop valve a351, the output end of the compressor 600 is communicated with the input end of the third gas storage container 390, and the third gas storage container 390 is selectively communicated with the filling pipeline 500 through the second stop valve a351.

[0074] As Figure 1As shown, the second driving gas source input pipe a321 is also provided with a third gas storage container 390. The output end of the compressor 600 is connected with the input end of the third gas storage container 390. The output end of the third gas storage container 390 is connected with the input end of the driving gas source output pipe 330 through a second stop valve a351. The third gas storage container 390 is used for storing the compressed air produced by the compressor 600. When the second stop valve a351 is opened, the compressed air in the third gas storage container 390 is used as the driving gas source and enters the pressure boosting branch 510 through the driving gas source output pipe 330. When the second stop valve a351 is closed, the compressed air is retained in the third gas storage container 390.

[0075] In use, since the pressure of the compressed air produced by the compressor 600 is unstable when the compressor 600 is just started, the pressure of the medium gas source output by the pneumatic pressure boosting pump 511 is also often accompanied by fluctuations. With the increase of the running time of the compressor 600, the fluctuations tend to be stable. In order to reduce the influence of the fluctuations, the compressor 600 is started in advance before the second stop valve 350 is opened. The compressed air is first stored in the third gas storage container 390. After the pressure of the compressed air tends to be stable, the second stop valve 350 is opened. The compressed air is used as the driving gas source to drive the pneumatic pressure boosting pump 511 to work, so as to output the medium gas source with stable pressure.

[0076] Further, when the compressor 600 is a vehicle built-in compressor 610, it is originally used to drive the brake clutch. Therefore, the efficiency of the vehicle built-in compressor 610 in producing compressed air is relatively slow. The third gas storage container 390 is used to reserve the compressed air for a period of time, so as to ensure that the driving gas source can be stably provided when the compressed air is used as the driving gas source during the operation of the maintenance device.

[0077] Optionally, the first gas storage container 100 is provided with a first pressure sensor 370. In this way, the pressure value P 惰性 in the first gas storage container 100 is obtained through the first pressure sensor 370. Then, the residual amount of the inert gas in the first gas storage container 100 is judged.

[0078] Exemplarily, according to the requirements of the present operation, the first threshold value P 阈1 and the second threshold value P 阈2 are set. It is satisfied that P 阈1 >P 阈2 . When P 惰性 >P 阈1 , it is indicated that the inert gas in the first gas storage container 100 can simultaneously serve as the driving gas source and the medium gas source. When P 阈1 >P 惰性 >P 阈2 , it is indicated that the pressure of the inert gas in the first gas storage container 100 is insufficient and can only be used as the medium gas source. When P 惰性<P 阈 2, it indicates that the inert gas inventory in the first gas storage container 100 is insufficient, and needs to be supplemented or replaced.

[0079] Preferably, the first stop valve 340, the second stop valve 350, and the third stop valve 440 are all solenoid valves, and the first pressure sensor 370, the compressor 600, the second stop valve 350, the first stop valve 340, and the third stop valve 440 are all in communication connection with the control unit. When P 惰性 >P 阈1 , the control unit commands the first stop valve 340 and the third stop valve 440 to open, and the inert gas in the first gas storage container 100 simultaneously serves as the driving gas source and the medium gas source; when P 阈1 >P 惰性 >P 阈2 , the control unit commands the first stop valve 340 to close, and simultaneously commands the compressor 600 to start and the second stop valve 350 to open, so that the inert gas in the first gas storage container 100 only serves as the medium gas source, and the compressed air generated by the compressor 600 replaces the inert gas as the driving gas source. When P 惰性 <P 阈2 , the control unit triggers an alarm to prompt that the first gas storage container 100 needs to be supplemented with inert gas or replaced.

[0080] Preferably, the first pressure sensor 370 is installed between the first stop valve 340 and the first gas storage container 100, or directly on the first gas storage container 100. In this way, before the first gas storage container 100 communicates with the driving gas source output pipe 330, the adjustment can be made according to the remaining amount of inert gas in the first gas storage container 100.

[0081] Optionally, the input end of the driving gas source pipeline 300 is provided with a first regulating valve 360, and the first regulating valve 360 is connected with the output end of the first gas storage container 100. In this way, the pressure of the inert gas output by the first gas storage container 100 can be adjusted through the first regulating valve 360, that is, the pressure of the driving gas source is adjusted through the first regulating valve 360, and then the pressure corresponding to the operation requirement of the medium gas source is obtained.

[0082] Preferably, the input end of the first regulating valve 360 is connected with the output end of the first gas storage container 100, and the output end of the first regulating valve 360 is installed with a second pressure sensor 380, and the second pressure sensor 380 is used to obtain the pressure value of the inert gas after pressure adjustment through the first regulating valve 360.

[0083] Further, the first regulating valve 360 is an electromagnetic valve, which is in communication with the control unit. As the work is carried out, the pressure in the first gas storage container 100 gradually decreases. In order to maintain the stability of the reading of the second pressure sensor 380, the control unit can adjust the opening degree of the first regulating valve 360 in real time according to the feedback information of the first pressure sensor 370, so as to maintain the stability of the reading of the second pressure sensor 380, and enable the pneumatic booster pump 511 to work stably.

[0084] As shown in the figure, the first driving gas source input pipe 310 is connected to the output end of the first gas storage container 100, the first pressure sensor 370, the first regulating valve 360, the second pressure sensor 380, the first stop valve 340 and the input end of the driving gas source output pipe 330 in sequence. Figure 1

[0085] Optionally, the booster branch 510 includes a second regulating valve 516. The output end of the driving gas source pipeline 300 is connected to the pneumatic booster pump 511 through the second regulating valve 516. In this way, the pressure of the driving gas source output by the driving gas source pipeline 300 can be adjusted through the second regulating valve 516 to meet the requirements of different working scenes.

[0086] Further, when only the inert gas in the first gas storage container 100 is used as the driving gas source, it is assumed that the pressure in the first gas storage container 100 is P 初始 , the pressure value of the inert gas decreases to P 初次 after passing through the first regulating valve 360, and the pressure value decreases to P 二次 after passing through the second regulating valve 516. P 二次 is the pressure value of the driving gas source that meets the requirements of the work. The step-by-step pressure regulation of the first regulating valve 360 and the second regulating valve 516 can reduce the pressure difference between the first gas storage container 100 and the pneumatic booster pump 511, and further improve the adjustment accuracy of the second regulating valve 516.

[0087] It should be noted that the greater the pressure difference between P 初次 and P 二次 , the worse the adjustment accuracy of the second regulating valve 516, and the more obvious the fluctuation of the output pressure value.

[0088] Further, when only the compressed air output by the compressor 600 is used as the driving gas source, the compressed air can be further adjusted in pressure through the second regulating valve 516, so that the compressor 600 can provide more accurate and stable driving gas source pressure for the pneumatic booster pump 511.

[0089] ​Furthermore, when the inert gas in the first gas storage container 100 and the compressed air produced by the compressor 600 are used as the driving gas source at the same time, the inert gas and the compressed air meet in the first medium gas source output pipe 430 and mix to form the driving gas source. Since there may be a pressure difference between the compressed air produced by the compressor 600 and the inert gas output from the first gas storage container 100, the pressure value of the mixed driving gas source is different from the pressure value required by the operation. Therefore, it is necessary to further limit the pressure of the mixed driving gas source through the second regulating valve 516 so that the airflow pressure in the driving gas source is unified, so that the pneumatic booster pump 511 can work smoothly.

[0090] Furthermore, the first boost input pipe 512 is also equipped with a first safety valve 518 and a ninth stop valve 519 , and the first safety valve 518 and the ninth stop valve 519 are both installed between the output end of the second regulating valve 516 and the input end of the pneumatic booster pump 511 .

[0091] Optionally, the filling pipeline 500 further includes a pressure relief branch 530, the input end of which is connected to the input end of the second regulating valve 516. In this way, part of the driving air source can enter the pneumatic booster pump 511 through the second regulating valve 516, while the remaining part can be discharged through the pressure relief branch 530, reducing the pressure in the second regulating valve 516.

[0092] Specifically, the input end of the pressure relief branch 530 is connected between the output end of the first regulating valve 360 ​​and the input end of the second regulating valve 516, and the output end of the pressure relief branch 530 is connected to the unloading member 540. The pressure relief branch 530 is equipped with a fifth stop valve 531, which is used to control the connection or disconnection of the pressure relief branch 530 and the boost branch 510. When the pressure P of the driving gas source between the first regulating valve 360 ​​and the second regulating valve 516 is 初次 >P 阈3 , P 阈3 When the pressure is the maximum that the second regulating valve 516 can withstand, the fifth stop valve 531 opens to divert part of the driving gas source into the pressure relief branch 530 to relieve the pressure and reduce the pressure of the second regulating valve 516.

[0093] Furthermore, the pressure relief branch 530 is connected to the unloading component 540 through the second safety valve 532 .

[0094] Furthermore, when the pressure value P of the driving air source required by the pneumatic booster pump 511 is 二次 The pressure value P of the driving gas source at the input end of the second regulating valve 516 初次 , satisfying P 初次 -P 二次 =△P, and △P>△P 阈 , △P 阈To enable the second regulating valve 516 to achieve precise regulation within a pressure difference range, the fifth stop valve 531 is opened, the pressure relief branch 530 is communicated with the pressure boosting branch 510, and pressure relief is performed until 阈 the fifth stop valve 531 is closed.

[0095] Further, the fifth stop valve 531 is an electromagnetic valve, and the output end of the fifth stop valve 531 is provided with a third pressure sensor 517. The fifth stop valve 531 and the third pressure sensor 517 are both in communication connection with the control unit, and the third pressure sensor 517 is used to acquire the output pressure value P 二次 When the pressure value returned by the third pressure sensor 517 fluctuates, or when the pressure value returned by the third pressure sensor 517 is greater than the pressure value required by the pneumatic booster pump 511, and after adjusting the second regulating valve 516, the pressure value returned by the third pressure sensor 517 is still greater than the pressure value required by the pneumatic booster pump 511, the control unit commands the fifth stop valve 531 to open to relieve pressure for the second regulating valve 516.

[0096] Optionally, the filling pipeline 500 is connected with the driving gas source pipeline 300 through a first filter 551. The first filter 551 is used to perform oil and water removal treatment on the driving gas source.

[0097] Specifically, the input end of the first filter 551 is in communication with the output end of the driving gas source output pipe 330, and the output end of the first filter 551 is connected with the first input end of the pressure boosting branch 510 and the input end of the pressure relief branch 530, respectively.

[0098] Optionally, the filling pipeline 500 is connected with the medium gas source pipeline 400 through a second filter 561. The second filter 561 is used to filter solid debris from the medium gas source.

[0099] Specifically, the input end of the second filter 561 is in communication with the output end of the first medium gas source output pipe 430, and the output end of the second filter 561 is connected with the second input end of the pressure boosting branch 510 and the input end of the bypass branch 520, respectively.

[0100] Specifically, the filling pipeline 500 further includes a first input pipe 550 and a second input pipe 560. The first input pipe 550 is used to connect the output end of the driving gas source output pipe 330 with the first input end of the pressure boosting branch 510 and the input end of the pressure relief branch 530, and the first input pipe 550 is provided with the first filter 551. The second input pipe 560 is used to connect the output end of the first medium gas source output pipe 430 with the second input end of the pressure boosting branch 510 and the input end of the bypass branch 520, and the second input pipe 560 is provided with the second filter 561.

[0101] Further, the second input pipe 560 is further provided with a sixth stop valve 562, which is used to control the communication or closing of the second input pipe 560.

[0102] Further, the second input pipe 560 is further provided with a fourth pressure sensor 563, which is used to obtain the pressure value of the medium gas source before entering the pneumatic booster pump 511. The fourth pressure sensor 563 is in communication connection with the control unit, and the control unit compares the signal returned by the fourth pressure sensor 563 with the pressure value of the medium gas source required by the operation, and then adjusts the working efficiency of the pneumatic booster pump.

[0103] As shown in Figure 8 Optionally, the filling pipeline 500 further comprises a backflow branch 570, which connects the pneumatic booster pump 511 and the first gas storage container 100, and the inert gas can flow back to the first gas storage container 100 from the pneumatic booster pump 511. In this way, the inert gas as the driving gas source can be transported back to the first gas storage container 100 through the backflow branch 570, realizing the repeated use of the inert gas.

[0104] Specifically, the inert gas is discharged from the pneumatic booster pump 511 through the first booster output pipe 514 and enters the backflow branch 570.

[0105] Further, the backflow branch 570 is provided with a third filter 571, a seventh stop valve 572, a third regulating valve 573 and a fourth pressure sensor 574. The third filter 571 is used to filter the inert gas participating in the backflow, ensuring the purity of the backflow inert gas. The seventh stop valve 572 is used to control the communication or closing of the backflow branch 570. The third regulating valve 573 is used to adjust the pressure of the inert gas participating in the backflow, so that the pressure value of the backflow inert gas is close to the pressure value in the first gas storage container 100. The fourth pressure sensor 574 is used to obtain the pressure value of the inert gas at the output end of the third regulating valve 573.

[0106] It should be noted that when only inert gas is used as the driving gas source, the backflow branch 570 is opened to recover the inert gas. When the compressor 600 is enabled to introduce compressed air as the driving gas source, on the one hand, the outdoor air resource is abundant and no longer needs to be recovered. However, after the air is mixed with the inert gas, the inert gas cannot be used as the medium gas source, so it is no longer recovered.

[0107] Further, the output end of the first booster output pipe 514 is connected with the input end of the unloading device 540, and the input end of the backflow branch 570 is connected with the unloading device 540. In this way, the driving gas source in the pressure relief branch 530 can flow back to the first gas storage container 100 through the backflow branch 570.

[0108] Further, the seventh stop valve 572 and the third regulating valve 573 are both solenoid valves, and the seventh stop valve 572, the third regulating valve 573, and the fourth pressure sensor 574 are in communication connection with the control unit. When the information returned by the first pressure sensor 370 indicates that P 惰性 >P 阈1 , the inert gas in the first gas storage container 100 can be used as the driving gas source and the medium gas source, the control unit commands the seventh stop valve 572 to open, so that the part of the inert gas as the driving gas source can return to the first gas storage container 100 after driving the pneumatic booster pump 511. Further, the control unit can also command the third regulating valve 573 to dynamically adjust according to the real-time pressure value in the first gas storage container 100 returned by the first pressure sensor 370, so that the pressure value of the backflow inert gas is close to the pressure value of the first gas storage container 100, and preferably the above two pressure values are adjusted to be consistent. The control unit can also compare the information returned by the third regulating valve 573 with the information returned by the first pressure sensor 370, and further correct the opening of the third regulating valve 573. When the information returned by the first pressure sensor 370 indicates that P 阈1 >P 惰性 >P 阈2 , the compressor 600 needs to be driven to introduce compressed air as the driving gas source, the control unit commands the seventh stop valve 572 to close the backflow branch 570.

[0109] Specifically, the first input end of the driving gas source pipeline 300 is the second driving gas source input pipe a321, the second input end of the driving gas source pipeline 300 is the first driving gas source input pipe 310, and the third input end of the driving gas source pipeline 300 is the second driving gas source input pipe b322. The second driving gas source input pipe b322 is connected with the external compressor 620 of the vehicle through the second stop valve b352.

[0110] Specifically, the bypass branch 520 is provided with an eighth stop valve 521 and a first one-way valve 522.

[0111] As Figure 7 shown, optionally, the maintenance device further comprises a docking pipeline 800, and the filling pipeline 500 is connected with the work object 700 through the docking pipeline 800. The docking pipeline 800 comprises a first reinforcing gun 810, a second reinforcing gun 820, a fifth pressure sensor 830, a tenth stop valve 840, an eleventh stop valve 850, and a unloading valve 860.

[0112] Specifically, the output ends of the cooling member 580 are connected with the input ends of the tenth stop valve 840 and the eleventh stop valve 850 respectively, the output end of the tenth stop valve 840 is communicated with the input end of the first hydrogenation gun 810, the output end of the first hydrogenation gun 810 is used for being connected with the work object 700, the output end of the eleventh stop valve 850 is communicated with the input end of the second hydrogenation gun 820, the output end of the second hydrogenation gun 820 is used for being connected with the work object, the first hydrogenation gun 810 and the second hydrogenation gun 820 are two hydrogenation guns of different types, which are used for being connected with the corresponding work object 700, and the fifth pressure sensor 830 is used for acquiring the pressure value of the medium gas source at the input end of the first hydrogenation gun 810 or the second hydrogenation gun 820.

[0113] The output end of the tenth stop valve 840 and the output end of the eleventh stop valve 850 are both connected with the unloading member 540 through the unloading valve 860, which is used for discharging the excess medium gas source.

[0114] As shown in Figure 9 and Figure 10 Optionally, the medium gas source pipeline 400 further comprises a second medium gas source output pipeline 460, and the filling pipeline 500 further comprises a third input pipeline 590, the input end of the second medium gas source output pipeline 460 is connected with the output end of the first gas storage container 100, the output end of the second medium gas source output pipeline 460 is connected with the input end of the second input pipeline 560, the second medium gas source output pipeline 460 is installed with a twelfth stop valve 470, which is used for controlling the connection or disconnection between the second medium gas source output pipeline 460 and the second input pipeline 560, when the twelfth stop valve 470 is opened, the inert gas in the first gas storage container 100 can enter the filling pipeline 500 as the medium gas source. The output end of the third input pipeline 590 is communicated with the input end of the second filter 561, the input end of the third input pipeline 590 is used for being connected with the output end of the first medium gas source output pipeline 430, and the third input pipeline 590 is installed with a second one-way valve 591 and a twelfth stop valve 592.

[0115] As shown in Figure 11 and Figure 12As shown, optionally, the maintenance device further comprises a frame fixing assembly 900, the frame fixing assembly 900 comprising a peripheral frame 910, a fixing support plate 920, a boss 930 and a hydrogen lance fixing rack 940. Wherein the fixing support plate 920, the boss 930 and the hydrogen lance fixing rack 940 are all installed in the peripheral frame 910 to form protection. The fixing support plate 920 is fixed with the peripheral frame 910, one side end surface of the boss 930 is fixed with the fixing support plate 920, and the other side end surface is provided with a control console. The boss 930 is a hollow structure, and the line is installed inside the boss 930. The fixing support plate 920 is provided with a avoiding opening, so that the space inside the boss 930 can be exposed to the outside. The circumferential wall of the boss 930 is provided with a fixed pipe clamp, and the hose connected with the hydrogen lance is wound on the circumferential wall of the boss 930 and fixed by the fixed pipe clamp. The hydrogen lance fixing rack 940 is installed on the fixing support plate 920, and the hydrogen lance is placed in the hydrogen lance fixing rack 940.

[0116] The utility model further provides a kind of maintenance vehicle, comprising vehicle compressor and above-mentioned maintenance device, the first input end of drive gas source pipeline 300 is connected with vehicle compressor, the second input end of drive gas source pipeline 300 is connected with first gas storage container 100.

[0117] It should be noted that the vehicle compressor is the vehicle built-in compressor 610 mentioned above, i.e. the compressor 600 in the vehicle for providing driving force for brake clutch.

[0118] Further, the maintenance vehicle is also loaded with vehicle external compressor 620, and the output power of the vehicle external compressor 620 is greater than that of the vehicle built-in compressor 610. The third input end of the drive gas source pipeline 300 is used to be connected with the vehicle external compressor 600.

[0119] In addition, the above is only the preferred embodiment of the utility model and the technical principle applied. Those skilled in the art will understand that the utility model is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, re-adjustments and substitutions without departing from the protection scope of the utility model. Therefore, although the utility model has been described in more detail through the above embodiments, the utility model is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the utility model concept. The scope of the utility model is determined by the appended claims.

Claims

1. A maintenance device, characterized by The application relates to a maintenance device for a vehicle compressor, comprising: a first gas storage container (100) for storing inert gas; a second gas storage container (200) for storing hydrogen gas; a driving gas source pipeline (300), an input end of the driving gas source pipeline (300) being selectively communicated with the first gas storage container (100) and / or a compressor (600) or neither of them; a medium gas source pipeline (400), an input end of the medium gas source pipeline (400) being selectively communicated with the first gas storage container (100) or the second gas storage container (200); a filling pipeline (500), the filling pipeline (500) comprising a pressurization branch (510) and a bypass branch (520), the pressurization branch (510) being provided with a pneumatic pressurization pump (511), gas in the driving gas source pipeline (300) being used for adjusting the working state of the pneumatic pressurization pump (511), and gas in the medium gas source pipeline (400) being selectively introduced into the pressurization branch (510) for pressurization or into the bypass branch (520).

2. The maintenance device according to claim 1, characterized in that The driving gas source pipeline (300) comprises a third gas storage container (390) and a second stop valve a (351), an output end of the compressor (600) being communicated with an input end of the third gas storage container (390), and the third gas storage container (390) being selectively communicated with the filling pipeline (500) through the second stop valve a (351).

3. The maintenance device according to claim 1, characterized in that The first gas storage container (100) is provided with a first pressure sensor (370).

4. The maintenance device according to claim 1, characterized in that An input end of the driving gas source pipeline (300) is provided with a first regulating valve (360), and the first regulating valve (360) is connected with an output end of the first gas storage container (100).

5. The maintenance device according to claim 4, characterized in that The pressurization branch (510) comprises a second regulating valve (516), and an output end of the driving gas source pipeline (300) is connected with the pneumatic pressurization pump (511) through the second regulating valve (516).

6. The maintenance device according to claim 5, characterized in that The filling pipeline (500) further comprises a pressure relief branch (530), and an input end of the pressure relief branch (530) is connected with an input end of the second regulating valve (516).

7. The maintenance device according to claim 1, characterized in that The filling pipeline (500) is connected with the driving gas source pipeline (300) through a first filter (551).

8. The maintenance device according to claim 1, characterized in that The filling pipeline (500) is connected with the medium gas source pipeline (400) through a second filter (561).

9. The maintenance device according to any one of claims 1 to 8, characterized in that The filling pipeline (500) further comprises a backflow branch (570), and the backflow branch (570) connects the pneumatic pressurization pump (511) and the first gas storage container (100), and the inert gas can flow back from the pneumatic pressurization pump (511) to the first gas storage container (100).

10. A vehicle, characterized by The application further relates to a vehicle compressor and the maintenance device according to any one of claims 1-9, a first input end of the driving gas source pipeline (300) being connected with the vehicle compressor, and a second input end of the driving gas source pipeline (300) being connected with the first gas storage container (100).

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